JPH04129349U - wiper device - Google Patents

Abstract

(57) [Summary] [Objective] To provide a wiper device that has a good appearance, can save space, and is easy to attach and detach a case of a washer switching mechanism from a wiper arm. [Structure] A base 2b that locks onto the vehicle body 50 side, a cleaning liquid chamber 8 is formed when the base 2b is assembled, a case 3a that responds integrally to the wiper arm 34, and a case 3a where the wiper blade 33 is located near the upper inverted position and at the lower part. It is equipped with a switching timing setting hole 6b1 that locks at a predetermined position with respect to the base 2b when it moves to the vicinity of the reverse position. A washer switching mechanism 3 is provided in which a response member 6 for switching the side nozzle connecting ducts 3a3 and 3a4 to a closed state is disposed between a case 3a and a base 2b.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is a wiper that can be used to wipe surfaces such as car windshields. In the wiper device used for wiping with a board, the washer is operated in conjunction with the This invention relates to a wiper device.

0002

[Conventional technology]

Figures 4 and 5 show a wiper device that operates the washer as described above in conjunction with each other. This is an example of what is described in Japanese Utility Model Application Publication No. 2-117956. ing.

0003 That is, the illustrated wiper device 20 has a pivot holder 3 fixed to a vehicle body 50. The base end side of the pivot shaft 30 rotatably attached to the vehicle body 50 via 0a A motor shaft 32a of a wiper motor 32 is connected to the link 31. At the same time, a wiper blade 33 is mounted on the tip side of the pivot shaft 32. The base end side of the wiper arm 34 is fixed.

0004 By supplying a predetermined power to the wiper motor 32, the motor system is The power of the shaft 32a is transmitted to the pivot shaft 30 via the link 31, and the pivot Since the cut shaft 30 is rotated back and forth, the wiper arm 34 is rotated back and forth. By the reciprocating rotation of the wiper arm 34, the blade provided on the wiper arm 34 Due to the elastic restoring force of the pressure contact spring, the wiper blade 33 is between the lower inverted position a and the upper inverted position b while being in pressure contact with the shield glass 35. Wipe the windshield glass 35.

[0005] Further, the wiper blade 33 is in a lower inverted position on the tip side of the wiper arm 34. When moving from position a to upper inverted position b, the direction of movement is to the right in Figure 5. The moving side washer nozzle 40 is attached, and the wiper blade 33 is 5, which is the direction of movement when moving from the upper inverted position b to the lower inverted position a. A double-acting side washer nozzle 41 is installed on the left side of the The drains 40 and 41 are equipped with a washer pump 43a provided in the washer tank 43. The washer switching machine shown in FIG. 4 is connected via the tank side cleaning liquid supply pipe 44. The structures 36 are connected in communication with each other.

[0006] As is clear from FIG. 4, the washer switching mechanism 36 has a washing section inside. The valve casing 36a forming the liquid chamber 36a1 is located on the base end side of the wiper arm 34. and is housed in a position spaced upward from the pivot shaft 30 in FIG. The valve casing 36a is fixed to the wiper arm 34 in the state shown in FIG. Inside, on the front side is a tank connection duct that is connected to the cleaning liquid chamber 36a1. 36a2 is provided, and the upper part of the valve casing 36a in FIG. On the side, nozzle connection ducts 36a3, 3 are connected to the cleaning liquid chamber 36a1. 6a4 are provided respectively.

[0007] Also, approximately in the center of the cleaning liquid chamber 36a1 is located outside the valve casing 36a. A valve body 36a6 is provided with a switching protrusion 36a5 protruding from the switching protrusion 36a5. The valve body 36a6 rotates around the valve shaft 36a7 due to the movement of the retaining projection 36a5. At this time, the nozzle connecting ducts 36a3 and 36a4 are alternately switched and closed. It has become.

[0008] A switching protrusion 36a5 is provided on the pivot holder 30a for wiper adjustment. When the wiper blade 33 rotates back and forth together with the blade 34, the lower part of the wiper blade 33 rotates at two points on the trajectory. The switching protrusion 3 corresponds to the position just before reaching the reversed position a and the upper reversed position b. Convex portions 30a1 and 30a2 for setting switching timing are provided which contact 6a5, respectively. be.

[0009] Further, each nozzle connecting duct 36a3, 36a4 has a nozzle side cleaning section. One end of the cleaning liquid supply pipes 45 and 46 are connected in communication, and the cleaning liquid is supplied to the nozzle side. The other end sides of the pipes 45 and 46 are connected to each of the washer nozzles 40 and 41. . Furthermore, the tank-side cleaning liquid is supplied to the tank connection duct 36a2. A tube 44 is inserted into the wiper arm 34 in FIG. 4 on the outside of the valve casing 36a. It is connected in a state where it protrudes to the front side.

0010 In the wiper device 20 having such a structure, a wiper switch (not shown) is installed. When switched on, a predetermined power is supplied to the wiper motor 32, causing the motor to turn on. The motor shaft 32a rotates, and the link 31 is powered by the motor shaft 32a. Since the pivot shaft 30 is rotated reciprocally through the wiper arm 34 The wiper arm 34 rotates back and forth, and the wiper arm 34 is rotated back and forth. The wiper blade 33 is moved to the windshield by the elastic restoring force of the blade pressure contact spring. While pressing against the field glass 35, move the mirror between the lower inverted position a and the upper inverted position b. Wipe India Shield Glass 35.

[0011] Therefore, with the wiper switch turned on, the washer (not shown) is turned on. When the washer switch is turned on, the washer pump 43 of the washer tank 43 A specified power is supplied to a for a time corresponding to the on switching of the washer switch. The washer pump 43a operates and the cleaning liquid is supplied through the tank side cleaning liquid supply pipe 44. The cleaning liquid stored in the washer tank 43 is fed into the cleaning liquid chamber 36a1. . Here, the wiper blade 33 is cut at a position just before reaching the lower reversal position a. The switching protrusion 36a5 has come into contact with the switching timing setting protrusion 30a1 on one side. Since the wiper blade 33 is moved from the lower inverted position a to the upper inverted position When moving toward b, the switching timing setting on one side of the switching protrusion 36a5 The valve body 36a6 contacts the nozzle connecting duct 3 on the other side by contacting the convex portion 30a1. 6a4 is in a closed state, so that the cleaning liquid is not supplied to the cleaning liquid chamber 36a1. The cleaning liquid passes through the nozzle connection duct 36a3 on one side to the nozzle side on the other side. The cleaning liquid is supplied to the forward side washer nozzle 40 via the cleaning liquid supply pipe 45, and the forward side Windshield gas in the direction of movement of the wiper blade 33 from the washer nozzle 40 It is injected towards the lath 35.

0012 Then, the wiper blade 33 moves from the lower inverted position a to the upper inverted position b. It moves integrally with the wiper arm 34 at a position just before reaching the upper reversal position b. The switching protrusion 36a5 that has been set touches the switching timing setting protrusion 30a2 on the other side. When in contact, the valve body 36a6 closes the nozzle connection duct 36a3 on one side and moves forward. Stop spraying the cleaning liquid from the side washer nozzle 40, and connect the nozzle connecting dazzle on the other side. 36a4.

[0013] The switching protrusion 36a5 contacts the switching timing setting protrusion 30a2 on the other side. As a result, the nozzle connection duct 36a4 on the other side is opened, so cleaning is possible. The cleaning liquid fed to the liquid chamber 36a1 flows through the nozzle connecting duct 36a4 on the other side. and then to the reciprocating side washer nozzle 41 via the nozzle side cleaning liquid supply pipe 46 on the other side. The wiper blade is supplied and moves from the upper reversal position b to the lower reversal position a. 33 toward the windshield glass 35 in the traveling direction of the washer nozzle on the backward moving side. It is injected from 41.

[0014] And again, the wiper blade 33 is directed from the upper reversal position b to the lower reversal position a. When the switching protrusion 36a5 is about to move and reach the lower reversal position a, the switching protrusion 36a5 Since it comes into contact with the switching timing setting protrusion 30a1 on the side, the switching protrusion 36 The valve body 36 is brought into contact with the switching timing setting convex portion 30a1 on one side of a5. a6 closes the nozzle connection duct 36a4 on the other side and connects the washer nozzle on the double-acting side. 41, and open the nozzle connection duct 36a3 on one side. so as to alternately switch the jetting of cleaning liquid from each washer nozzle 40, 41. It has become.

[0015]

[Problem that the idea aims to solve]

However, in the conventional wiper device 20 described above, the tank connection duct 36a2 A tank-side cleaning liquid supply pipe 44 that is connected to the wiper arm 34 protrudes outside the wiper arm 34. Because of this structure, the tank-side cleaning liquid supply pipe 44 is exposed outside the vehicle body 50. Since the design is made of a There was an issue. In addition, the switching protrusion 3 protruding to the outside of the valve casing 36a The switching timing setting convex portions 30a1 and 30a2 that come into contact with the pivot point 6a5 are Since the structure is provided on the wiper arm 30a, the cutout on the wiper arm 34 side Convex portion 3 for setting the switching timing on the vehicle body 50 side with respect to rotation of the switching protrusion 36a5 A large space must be secured between 0a1 and 30a2, and the window A large space is taken up between the shield glass 35 and the hood of the vehicle body 50. There was a problem in that it was difficult to do so, so there was a disadvantage in terms of space. and, The valve casing 36a is connected to the pivot shaft 32 on the base end side of the wiper arm 34. In FIG. Since the wiper arm 34 and wiper blade 33 have a fixed structure, When removing and installing the valve casing 36a, the valve casing 36a is also removed together with the wiper arm 34. Therefore, the tank side cleaning liquid supply pipe 44 was connected to the valve casing 36a. Since it is troublesome to attach and detach the wiper arm 34 in the There is a problem that the business performance is extremely poor, and the challenge is to solve these problems. It had become.

[0016]

[Purpose of invention]

Therefore, this idea was made in view of the conventional problems mentioned above, and it has a good appearance. Provides a wiper device that is convenient, space-friendly, and has excellent workability. It is intended to.

[0017]

[Means to solve the problem]

The wiper device according to this invention receives power from the wiper motor and rotates against the vehicle body. A pivot shaft that moves, and a pivot shaft that is fixed to the pivot shaft and reciprocatingly oscillates on the wiping surface. a movable wiper arm, and an upper inverted position of the wiping surface attached to the wiper arm; The wiper blade presses against the wiping surface between the upper and lower inverted positions, and the washer tongue. A forward side window that injects the cleaning liquid stored in the wiper blade onto the forward and backward sides of the wiper blade. The washer nozzle/return side washer nozzle, and the forward washer nozzle/return side washer nozzle Washer switching mechanism that alternately switches and supplies cleaning liquid to the moving side washer nozzle In the wiper device, the washer switching mechanism includes a washer tank. It has a tank connection duct that communicates with the tank and a pivot shaft inserted through it. A base that locks to the vehicle body side in a fixed position, and a forward and backward side that communicates with the washer nozzles on the forward and backward sides. It is equipped with a duct for connecting the moving side and double moving side nozzles, and also has the duct for connecting the tank inside. Connect the tank connection duct to the nozzle with the base installed on the side assembled. A cleaning liquid chamber is formed that communicates with the wiper duct, and the wiper arm is engaged with the cleaning liquid chamber. A case that integrally responds to the wiper arm at a position concentric with the pivot shaft; The wiper blade is stored between the case and the base, and the wiper blade is located near the upper inverted position. ・Switching that locks the base at a predetermined position when moving near the lower inversion position A timing setting hole is provided, and the switching timing setting hole is latched to the base. A response member is installed to switch the forward and backward nozzle connection ducts to the closed state when the nozzle is in the closed state. The wiper device is characterized by having a cross-shaped structure, and is the structure of the invention related to the above-mentioned wiper device. is used as a means to solve the conventional problems mentioned above.

[0018]

[Effect]

The wiper device related to this invention has a base attached to the case, and the wiper The cleaning liquid chamber, which is formed when the base is assembled to the case, responds integrally to the system and moves forward. Connect the side/double side nozzle connection duct and tank connection duct to connect the tank. The duct will be installed inside the case, so it will communicate with the tank connection duct. The cleaning liquid supply pipe on the tank side is connected to the outside of the wiper arm. Compared to the previous version, the tank-side cleaning fluid supply pipe is not exposed to the outside of the vehicle, and the switching switch is The base locking protrusion that obtains the timing is attached to the response member stored between the case and the base. Because the valve casing is provided with a switch that comes into contact with the switching protrusion that Compared to the case where the convex part for setting the change timing is provided on the pivot holder, The case does not protrude outward, and the case does not pivot when engaged with the wiper arm. The wiper arm responds to the wiper arm in a concentric position with respect to the wiper shaft, so the valve case The thing is stored in a position away from the pivot shaft on the proximal end of the wiper arm. The case is integrated with the wiper arm compared to the case that is fixed to the wiper arm with the There is no need to put it on and take it off.

[0019]

【Example】

1 to 3 show an embodiment of a wiper device according to this invention. The illustrated wiper device 1 is connected to a vehicle via a pivot holder 2a fixed to a vehicle body 50. Similar to FIG. The motor shaft 32a of the wiper motor 32 is connected through the link 31. At the same time, a wiper blade 33 is attached to the tip side of the pivot shaft 2. The base end side of the wiper arm 34 is fixed.

[0020] By supplying a predetermined power to the wiper motor 32, the motor system is The power of the shaft 32a is transmitted to the pivot shaft 2 via the link 31, and the pivot Since the shaft 2 is rotated in a reciprocating manner, the wiper arm 34 is rotated in a reciprocating manner. Due to the reciprocating rotation of the wiper arm 34, the blade provided on the wiper arm 34 is pressed into contact with the wiper arm 34. The elastic restoring force of the spring moves the wiper blade 33 to the windsea which is the wiping surface. While pressing against the field glass 35, move the wire between the lower reversal position A and the upper reversal position B. wipe the head shield glass 35.

[0021] Further, the wiper blade 33 is in a lower inverted position on the tip side of the wiper arm 34. When moving from position A to upper reversal position B, place a forward side watch on the side that is the direction of movement. The wiper blade 33 is in the upper inverted position while the wiper nozzle 40 is installed. When moving from position B to lower reversal position A, place a backward movement side watch on the side that will be the direction of movement. A washer nozzle 41 is attached to each of these washer nozzles 40, 41. The tank side connected to the washer pump 43a provided in the washer tank 43 The washer switching mechanisms 3 shown in FIG. 1 are connected through the cleaning liquid supply pipe 44. There is.

[0022] As is clear from FIG. 1, the washer switching mechanism 3 has a nut 9 attached to the pin. Engages with the base end side of the wiper arm 34 by screwing into the bot shaft 2 A case 3a is provided which is inserted concentrically through the pivot shaft 2.

[0023] The case 3a has a top wall 3a1 that comes into contact with the wiper arm 34 and has a substantially cylindrical shape. It is provided on the upper side of the side wall 3a2, and the lower side in FIG. On the left side of the inside, there is a nozzle contact that communicates from the inside of the side wall 3a2 to the outside of the side wall 3a2. Continuation ducts 3a3 and 3a4 are provided side by side.

[0024] Further, a pivot shaft insertion hole 3a5 is formed approximately in the center of the ceiling wall 3a1. A pivot shaft support portion 3a6 is provided, and this pivot shaft insertion hole By inserting the pivot shaft 2 through 3a5, the case 3a becomes a pivot shaft. It is rotatably supported by the shaft 2.

[0025] On the lower side of the case 3a in FIG. 1, on the inner peripheral side of the side wall 3a2. The base 3b is assembled.

[0026] The base 3b has an inner diameter slightly smaller than the inner diameter of the side wall 3a2 of the case 3a. It has a substantially annular outer shape having an outer wall 3b1 with a small outer diameter, and has a A central hole 3b2 is provided through which the pivot shaft support portion 3a6 of the case 3a is inserted. There is a ring between the central hole 3b2 and the pivot shaft support portion 3a6. A sealing member 4 for maintaining watertightness is installed in the shape.

[0027] Further, on the right side of the base 3b in FIG. A tank connection duct 3b4 communicating from 3 to the lower side of the base 3b is provided, On the left side of the base 3b in FIG. The projection 2 provided on the pivot holder 2a is provided with a protruding locking protrusion 3b5. Approximately rectangular for locking the base 2b to the pivot holder 2a with a1 inserted A notch 3b6 cut out in a shape is provided.

[0028] And, between the outside of the locking protrusion 3b5 and the side wall 3a2 of the case 3a, A seal member 5 for watertight maintenance similar to the seal member 4 is attached to the case. A response member 6 is housed between the base 3a and the base 2b.

[0029] The response member 6 supports the pivot shaft of the case 3a on the inner peripheral side in FIG. The inner circumferential side responsive member 6a inserted into the holding portion 3a6 and the inner circumferential side responsive member 6 in FIG. is fitted on the outer circumferential side of the case 3a through an O-ring, and is inserted into the side wall 3a2 of the case 3a. It consists of an outer peripheral side response member 6b.

[0030] Further, the inner circumferential side of the inner circumferential side response member 6a and the pivot shaft support of the case 3a A sealing member 7 for watertightness is installed between the portions 3a6, and the inner peripheral side The nozzle connecting ducts 3a3 and 3a4 are provided at two opposing locations on the member 6a. Closing members 6a1 and 6a2 are attached to close either one of them.

[0031] Then, the locking protrusion 3b5 provided on the base 3b of the outer peripheral side response member 6b At the corresponding position, as shown in Figure 2, there is a long arc concentric with the pivot shaft 2. A hole 6b1 for setting the switching timing is cut out to make the size of the switch. The Ipa blade 33 moves from the upper reversal position B to the lower reversal position A, and At a position just before reaching the transfer position A, the outer circumference side response member 6b and the inner circumference side response member 6a moves relative to the base 3b integrally with the wiper arm 34 to set the switching timing. The locking protrusion 3b5 of the base 3b moves within the hole 6b1 for setting the switching timing. One end 6b2 of the hole 6b1 is locked to connect one side nozzle with one side closing member 6a1. At the same time, the wiper blade 33 is moved from the lower inversion position A. Move toward the upper inverted position B and just before reaching the lower inverted position A, the outer circumferential side The response member 6b and the inner peripheral response member 6a are integrated with the wiper arm 34 and are attached to the base 3b. The locking protrusion 3b5 of the base 3b is moved to the switching timing setting hole 6b. The nozzle connecting duct on the other side is locked with the other end 6b3 of 1 and the closing member 6a2 on the other side The port 3a4 is closed.

[0032] Then, the case 3a is assembled to the base 3b, and the case 3a and the base 3b are assembled. With the response members 6a and 6b stored, the top wall 3a1 of the case 3a and Between the bases 3b, connect the tank connection duct 3b4 of the base 3b to the case 3a. A cleaning liquid chamber 8 is formed to be connected to the nozzle connecting ducts 3a3 and 3a4. The cleaning liquid chamber 8 is connected to the case 3a and the base 3 by the seal members 4, 5, and 7. It is kept watertight to the outside of b.

[0033] Furthermore, each of the nozzle connecting ducts 3a3, 3a4 has the structure shown in FIG. One end side of nozzle-side cleaning liquid supply pipes 45 and 46 similar to the above are connected in communication. The other end side of these nozzle-side cleaning liquid supply pipes 45 and 46 is the double-acting side washer nozzle 4. 1. It is communicatively connected to the forward washer nozzle 40.

[0034] Furthermore, the tank connection duct 3b4 is provided with a case on the lower side of the case 3a. Tank side similar to that shown in FIG. 5 in a position shielded by the side wall 3a2 of the A cleaning liquid supply pipe 44 is connected in communication.

[0035] In the wiper device 1 having such a structure, a wiper switch (not shown) is turned on. When the wiper motor 32 is switched to the The shaft 32a rotates, and the link 31 is driven by the power of this motor shaft 32a. Since the pivot shaft 2 is rotated back and forth through the wiper arm 34, the wiper arm 34 is The reciprocating rotation of the wiper arm 34 causes the wiper arm 34 to have a The wiper blade 33 is sealed by the elastic restoring force of the blade pressure spring. While pressing against the door glass 35, the window is moved between the lower inversion position A and the upper inversion position B. Wipe the shield glass 35.

[0036] Therefore, with the wiper switch turned on, the washer (not shown) is turned on. When the washer switch is turned on, the washer pump 43 of the washer tank 43 A specified power is supplied to a for a time corresponding to the on switching of the washer switch. The washer pump 43a operates and the cleaning liquid is supplied through the tank side cleaning liquid supply pipe 44. The cleaning liquid stored in the washer tank 43 is fed into the cleaning liquid chamber 8.

[0037] Here, at a position just before the wiper blade 33 reaches the lower reversal position A, The locking protrusion 3b5 of the switch 3b is locked to one end 6b2 of the switching timing setting hole 6b1. Then, the nozzle connection duct 3a3 on one side is closed with the closing member 6a1 on the other side. Therefore, the wiper blade 33 moves from the lower inverted position A to the upper inverted position B. When moving toward The cleaning liquid supplied to the cleaning liquid chamber 8 due to the blockage of the port 3a3 is transferred to the nozzle connection on the other side. The forward side water is supplied through the nozzle side cleaning liquid supply pipe 46 on the other side through the inside of the forward side duct 3a4. The wiper is supplied to the washer nozzle 40 and the wiper is supplied from the forward washer nozzle 40. It is sprayed toward the windshield glass 35 in the traveling direction of the radar 33.

[0038] Then, the wiper blade 33 moves from the lower reversal position A to the upper reversal position B. At a position just before reaching the upper inverted position B, the locking protrusion 3b5 of the base 3b is Move within the switching timing setting hole 6b1 to set the switching timing setting hole 6b1. The other end 6b3 is locked and the other side closing member 6a2 connects the other nozzle connection duct. 3a4 and stop spraying the cleaning liquid from the forward washer nozzle 40. The nozzle connection duct 3a3 on one side is released by the closing member 6a1 on the other side.

[0039] The wiper blade 33 is reversed at the upper reverse position B and moved toward the lower reverse position A. When cleaning, the cleaning liquid is supplied to the cleaning liquid chamber 8 by opening the nozzle connecting duct 3a3 on one side. The cleaning liquid passes through the nozzle connection duct 3a3 on one side and enters the nozzle side cleaning on the other side. The purified liquid is supplied to the double-acting side washer nozzle 41 via the purified liquid supply pipe 45, and is moved to the upper inversion position B. Window in the direction of movement of the wiper blade 33 moving from to the lower reversal position A The water is sprayed from the backward washer nozzle 41 toward the shield glass 35 .

[0040] And again, the wiper blade 33 is directed from the upper reversal position B to the lower reversal position A. At the position just before reaching the lower inversion position A, move the base 3 in the same manner as above. The locking protrusion 3b5 of b is locked to one end 6b2 of the switching timing setting hole 6b1. Since the nozzle connection duct 3a3 on one side is closed with the closing member 6a1 on one side, Stop spraying cleaning liquid from the washer nozzle 41 on the double-acting side, and connect the nozzle on the other side. The cleaning fluid is sprayed from each washer nozzle 40, 41 by opening the cleaning duct 3a4. It will be switched alternately.

[0041]

[Effect of the idea]

As explained above, the wiper device according to this invention has the above-mentioned configuration. Therefore, the tank side cleaning liquid supply pipe that is connected to the tank connection duct was wiped. Connected by protruding from the outside of the arm, for switching that protrudes from the outside of the valve casing. A convex part for setting the switching timing that comes into contact with the protrusion is provided on the pivot holder, and the valve The casing is stored away from the pivot shaft at the proximal end of the wiper arm. Compared to the case where the cleaning fluid supply pipe is fixed to the wiper arm in the It looks good because it is not exposed at all on the outside of the case and does not protrude to the outside of the case. The space between the windshield glass and the bonnet will This eliminates wasting time and prevents pivoting while the case is engaged with the wiper arm. The wiper arm responds to the wiper arm in a concentric position with respect to the wiper shaft, so the case does not need to be wiped. It has the excellent effect of eliminating the need for attachment and detachment since it is integrated with the IPA arm. Ru.

[Submission date] May 19, 1992

[Procedural amendment 1]

[Name of document to be amended] Specification

[Correction target item name] 0003

[Correction method] Change

[Correction details]

0003 That is, the illustrated wiper device 20 has a pivot holder 3 fixed to a vehicle body 50. The base end side of the pivot shaft 30 rotatably attached to the vehicle body 50 via 0a A motor shaft 32a of a wiper motor 32 is connected to the link 31. At the same time, a wiper blade 33 is mounted on the tip side of the pivot shaft 30. The base end side of the wiper arm 34 is fixed.

[Procedural amendment 2]

[Name of document to be amended] Specification

[Correction target item name] 0009

[Correction method] Change

[Correction details]

[0009] Further, each nozzle connecting duct 36a3, 36a4 has a nozzle side cleaning section. One end of the cleaning liquid supply pipes 45 and 46 are connected in communication, and the cleaning liquid is supplied to the nozzle side. The other ends of the tubes 45 and 46 are connected to the washer nozzles 41 and 40. . Furthermore, the tank-side cleaning liquid is supplied to the tank connection duct 36a2. A tube 44 is inserted into the wiper arm 34 in FIG. 4 on the outside of the valve casing 36a. It is connected in a state where it protrudes to the front side.

[Procedural amendment 3]

[Name of document to be amended] Specification

[Correction target item name] 0011

[Correction method] Change

[Correction details]

[0011] Therefore, with the wiper switch turned on, the washer (not shown) is turned on. When the washer switch is turned on, the washer pump 43 of the washer tank 43 A specified power is supplied to a for a time corresponding to the on switching of the washer switch. The washer pump 43a operates and the cleaning liquid is supplied through the tank side cleaning liquid supply pipe 44. The cleaning liquid stored in the washer tank 43 is fed into the cleaning liquid chamber 36a1. . Here, the wiper blade 33 is cut at a position just before reaching the lower reversal position a. The switching protrusion 36a5 has come into contact with the switching timing setting protrusion 30a1 on one side. Since the wiper blade 33 is moved from the lower inverted position a to the upper inverted position When moving toward b, the switching timing setting on one side of the switching protrusion 36a5 By contacting the convex portion 30a1, the valve body 36a6 connects to the nozzle connecting duct 3 on one side. 6a3 is closed, which causes the nozzle connection duct on the other side to 36a4 is opened, and the cleaning liquid supplied to the cleaning liquid chamber 36a1 is passed through the nozzle on the other side. It passes through the connection duct 36a4 and moves forward through the other nozzle side cleaning liquid supply pipe 46. The water is supplied to the side washer nozzle 40 and is discharged from the forward washer nozzle 40. It is sprayed towards the windshield glass 35 in the direction of movement of the Ipa blade 33. .

[Procedural amendment 4]

[Name of document to be amended] Specification

[Correction target item name] 0012

[Correction method] Change

[Correction details]

0012 Then, the wiper blade 33 moves from the lower inverted position a to the upper inverted position b. It moves integrally with the wiper arm 34 at a position just before reaching the upper reversal position b. The switching protrusion 36a5 that has been set touches the switching timing setting protrusion 30a2 on the other side. When in contact, the valve body 36a6 closes the nozzle connecting duct 36a4 on the other side and moves forward. Stop spraying the cleaning liquid from the side washer nozzle 40, and close the nozzle connection dazzle on one side. 36a3.

[Procedural amendment 5]

[Name of document to be amended] Specification

[Correction target item name] 0013

[Correction method] Change

[Correction details]

[0013] The switching protrusion 36a5 contacts the switching timing setting protrusion 30a2 on the other side. As a result, the nozzle connection duct 36a3 on one side is opened, so cleaning is possible. The cleaning liquid fed to the liquid chamber 36a1 flows through the nozzle connection duct 36a3 on one side. and then to the double-acting washer nozzle 41 via the nozzle-side cleaning liquid supply pipe 45 on one side. The wiper blade is supplied and moves from the upper reversal position b to the lower reversal position a. 33 toward the windshield glass 35 in the traveling direction of the washer nozzle on the backward moving side. It is injected from 41.

[Procedural amendment 6]

[Name of document to be amended] Specification

[Correction target item name] 0014

[Correction method] Change

[Correction details]

[0014] And again, the wiper blade 33 is directed from the upper reversal position b to the lower reversal position a. When the switching protrusion 36a5 is about to move and reach the lower reversal position a, the switching protrusion 36a5 Since it comes into contact with the switching timing setting protrusion 30a1 on the side, the switching protrusion 36 The valve body 36 is brought into contact with the switching timing setting convex portion 30a1 on one side of a5. a6 closes the nozzle connection duct 36a3 on one side and connects the washer nozzle on the double-acting side. 41, and open the nozzle connection duct 36a4 on the other side. so as to alternately switch the jetting of cleaning liquid from each washer nozzle 40, 41. It has become.

[Procedural amendment 7]

[Name of document to be amended] Specification

[Correction target item name] 0016

[Correction method] Change

[Correction details]

[0016]

[Purpose of invention]

Therefore, this idea was made in view of the conventional problems mentioned above, and it has a good appearance. The wiper of the washer switching mechanism is convenient and space-saving. The purpose of this invention is to provide a wiper device that is easy to attach and detach from the wiper system.

[Procedural amendment 8]

[Name of document to be amended] Specification

[Correction target item name] 0018

[Correction method] Change

[Correction details]

[0018]

[Effect]

The wiper device related to this invention has a base attached to the case, and the wiper The cleaning liquid chamber, which is formed when the base is assembled to the case, responds integrally to the system and moves forward. Connect the side/double side nozzle connection duct and tank connection duct to connect the tank. The duct will be installed inside the case, so it will communicate with the tank connection duct. The cleaning liquid supply pipe on the tank side is connected to the outside of the wiper arm. Compared to the previous version, the tank-side cleaning fluid supply pipe is not exposed to the outside of the vehicle, and the switching switch is The base locking protrusion that obtains the timing is attached to the response member stored between the case and the base. Because the valve casing is provided with a switch that comes into contact with the switching protrusion that Compared to the case where the convex part for setting the change timing is provided on the pivot holder, The case does not protrude outward, and the case does not pivot when engaged with the wiper arm. The wiper arm responds to the wiper arm in a concentric position with respect to the wiper shaft, so the valve case The thing is stored in a position away from the pivot shaft on the proximal end of the wiper arm. The case is integrated with the wiper arm compared to the case that is fixed to the wiper arm with the Even if it is removed from the pivot shaft, the case of the washer switching mechanism cannot be attached or removed. This is simply done from the wiper arm.

[Procedural amendment 9]

[Name of document to be amended] Specification

[Correction target item name] 0021

[Correction method] Change

[Correction details]

[0021] Further, the wiper blade 33 is in a lower inverted position on the tip side of the wiper arm 34. When moving from position A to upper reversal position B, place a forward side watch on the side that is the direction of movement. The wiper blade 33 is equipped with a wiper nozzle 40 (see FIG. 4). When moving from upper inversion position B to lower inversion position A, on the side that is the direction of movement. A double-acting side washer nozzle 41 (see Fig. 4) is installed, and each of these washers The washer pump 43 provided in the washer tank 43 is attached to the washer nozzles 40 and 41. The washer switch shown in FIG. The mechanism 3 is connected in communication with each other.

[Procedural amendment 10]

[Name of document to be amended] Specification

[Correction target item name] 0031

[Correction method] Change

[Correction details]

[0031] Then, the locking protrusion 3b5 provided on the base 3b of the outer peripheral side response member 6b At the corresponding position, as shown in Figure 2, there is a long arc concentric with the pivot shaft 2. A hole 6b1 for setting the switching timing is cut out to make the size of the switch. The Ipa blade 33 moves from the upper reversal position B to the lower reversal position A, and At a position just before reaching the transfer position A, the outer circumference side response member 6b and the inner circumference side response member 6a moves relative to the base 3b integrally with the wiper arm 34 to set the switching timing. The locking protrusion 3b5 of the base 3b moves within the hole 6b1 for setting the switching timing. One end 6b2 of the hole 6b1 is locked to connect one side nozzle with one side closing member 6a1. At the same time, the wiper blade 33 is moved from the lower inversion position A. Move toward the upper inverted position B and move to the outer circumferential side at a position just before reaching the upper inverted position B. The response member 6b and the inner peripheral response member 6a are integrated with the wiper arm 34 and are attached to the base 3b. The locking protrusion 3b5 of the base 3b is moved to the switching timing setting hole 6b. The nozzle connecting duct on the other side is locked with the other end 6b3 of 1 and the closing member 6a2 on the other side The port 3a4 is closed.

[Procedural amendment 11]

[Name of document to be amended] Specification

[Correction target item name] 0032

[Correction method] Change

[Correction details]

[0032] Then, the case 3a is assembled to the base 3b, and the case 3a and the base 3b are assembled. With the response members 6a and 6b stored, the top wall 3a1 of the case 3a and Between the bases 3b, connect the tank connection duct 3b4 of the base 3b to the case 3a. A cleaning liquid chamber 8 is formed to be connected to the nozzle connecting ducts 3a3 and 3a4, The base 3b is cleaned even when the case 3a is moved relative to the base 3b. It has a groove for introducing the liquid into the cleaning liquid chamber 8. This cleaning liquid chamber 8 is located at each seal portion. Watertightness is maintained from the outside of the case 3a and the base 3b by the materials 4, 5, and 7. It has become a state.

[Procedural amendment 12]

[Name of document to be amended] Specification

[Correction target item name] 0038

[Correction method] Change

[Correction details]

[0038] Then, the wiper blade 33 moves from the lower reversal position A to the upper reversal position B. At a position just before reaching the upper inverted position B, the locking protrusion 3b5 of the base 3b is Move within the switching timing setting hole 6b1 to set the switching timing setting hole 6b1. The other end 6b3 is locked and the other side closing member 6a2 connects the other nozzle connection duct. 3a4 and stop spraying the cleaning liquid from the forward washer nozzle 40. The nozzle connection duct 3a3 on one side is opened by the closing member 6a1 on the other side.

[Procedural amendment 13]

[Name of document to be amended] Specification

[Correction target item name] 0039

[Correction method] Change

[Correction details]

[0039] The wiper blade 33 is reversed at the upper reverse position B and moved toward the lower reverse position A. When cleaning, the cleaning liquid is supplied to the cleaning liquid chamber 8 by opening the nozzle connection duct 3a3 on one side. The cleaning liquid passes through the nozzle connection duct 3a3 on one side and enters the nozzle side cleaning on the other side. The purified liquid is supplied to the double-acting side washer nozzle 41 via the purified liquid supply pipe 45, and is moved to the upper inversion position B. Window in the direction of movement of the wiper blade 33 moving from to the lower reversal position A The water is sprayed from the backward washer nozzle 41 toward the shield glass 35 .

[Procedural amendment 14]

[Name of document to be amended] Specification

[Correction target item name] 0041

[Correction method] Change

[Correction details]

[0041]

[Effect of the idea]

As explained above, the wiper device according to this invention has the above-mentioned configuration. Therefore, the tank side cleaning liquid supply pipe that is connected to the tank connection duct was wiped. Connected by protruding from the outside of the arm, for switching that protrudes from the outside of the valve casing. A convex part for setting the switching timing that comes into contact with the protrusion is provided on the pivot holder, and the valve The casing is stored away from the pivot shaft at the proximal end of the wiper arm. Compared to the case where the cleaning fluid supply pipe is fixed to the wiper arm in the It looks good because it is not exposed at all on the outside of the case and does not protrude to the outside of the case. The space between the windshield glass and the bonnet will This eliminates wasting time and prevents pivoting while the case is engaged with the wiper arm. The wiper arm responds to the wiper arm in a concentric position with respect to the wiper shaft, so the case does not need to be wiped. The washer switching mechanism is integrated with the Ipa arm and can be removed from the pivot shaft. The case can be attached and detached extremely easily, making it easier to replace the case. This has the excellent effect of making the environment more comfortable.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional side view of an embodiment of a wiper device according to the invention.

FIG. 2 is a cross-sectional plan view of the wiper device shown in FIG. 1;

3 is an external perspective view of the washer switching mechanism and its surroundings in the wiper device shown in FIG. 1. FIG.

FIG. 4 is a partially cutaway plan view of a conventional wiper device.

FIG. 5 is an external view of the wiper device shown in FIG. 4.

[Explanation of symbols]

1 Wiper device 2 Pivot shaft 3 Washer switching mechanism 3a Case 3a3 Forward side nozzle connection duct 3a4 Return side nozzle connection duct 3b Base 3b4 Tank connection duct 6 (6a, 6b) Response member (inner circumference response member, Outer peripheral side response member) 6b1 Switching timing setting hole 6b1 32 Wiper motor 33 Wiper blade 34 Wiper arm 35 Wiping surface 40 Forward washer nozzle 41 Reciprocating washer nozzle 43 Washer tank 50 Vehicle body A Lower inverted position B Upper inverted position

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[Procedural amendment]

[Submission date] May 19, 1992

[Procedural amendment 15]

[Name of document to be amended] Specification

[Correction target item name] Explanation of code

[Correction method] Change

[Correction details]

[Explanation of symbols] 1 Wiper device 2 Pivot shaft 3 Washer switching mechanism 3a Case 3a3 Forward-side nozzle connection duct 3a4 Return-side nozzle connection duct 3b Base 3b4 Tank connection duct 6 (6a, 6b) Response member (inside) Circumference side response member, outer circumference side response member) 6b1 Switching timing setting hole 6b1 8 Cleaning liquid chamber 32 Wiper motor 33 Wiper blade 34 Wiper arm 35 Wiping surface 40 Forward side washer nozzle 41 Reverse side washer nozzle 43 Washer tank 50 Vehicle body A Bottom reversal Position B Upper inverted position

[Procedural amendment 17]

[Name of document to be corrected] Drawing

[Correction target item name] Figure 3

[Correction method] Change

[Correction details]

[Figure 3]

[Procedural amendment 18]

[Name of document to be corrected] Drawing

[Correction target item name] Figure 4

[Correction method] Change

[Correction details]

[Figure 4]

Claims (1)

[Scope of utility model registration request] 1. A pivot shaft that rotates relative to the vehicle body in response to power from a wiper motor, a wiper arm that is fixed to the pivot shaft and swings back and forth on the wiping surface, and a wiper arm that is attached to the wiper arm and rotates on the wiping surface. A wiper blade that presses against the wiped surface between an upper inverted position and a lower inverted position, and a forward washer nozzle and a backward washer that spray cleaning liquid stored in a washer tank onto the forward and backward sides of the wiper blade. In a wiper device comprising a nozzle and a washer switching mechanism that alternately switches and supplies cleaning liquid to the forward washer nozzle and the backward washer nozzle, the washer switching mechanism includes a tank connection duct that communicates with the washer tank. A base that is fixed to the vehicle body side with the pivot shaft inserted therein, and a forward and backward side nozzle connection duct that communicates with the forward and backward side washer nozzles, as well as a tank connection duct. When the base disposed inside is assembled, a cleaning liquid chamber is formed that communicates and connects the tank connection duct to the nozzle connection duct, and the wiper arm is engaged with the wiper arm and concentrically with respect to the pivot shaft. and a switching timing setting that is housed between the case and the base and locks the wiper blade at a predetermined position relative to the base when the wiper blade moves to the vicinity of the upper inversion position or the vicinity of the lower inversion position. A wiper device characterized in that a responsive member is provided that has a switching timing setting hole and switches the forward and backward nozzle connecting ducts to a closed state in a state where the switching timing setting hole is locked to the base.