JP6441156B2 - Wiper device - Google Patents

Description

  The present invention relates to a wiper device including a wiper blade for wiping a wiping surface.

  A vehicle such as an automobile is provided with a wiper device that ensures visibility of a driver or the like. The wiper device includes a wiper arm that is swung by an electric motor, and a wiper blade that is attached to the wiper arm. When the wiper switch in the passenger compartment is turned on, the wiper arm is swung, whereby the blade rubber reciprocates on the wiping surface, and rainwater or the like adhering to the wiping surface is wiped off.

  By the way, when a deposit such as dust adheres to the wiping surface, the wiper blade is reciprocated while spraying the cleaning liquid onto the wiping surface. Thereby, it is possible to wipe cleanly without damaging the wiping surface by moistening an adhering matter such as dust. Usually, the cleaning liquid is sprayed onto the wiping surface from a nozzle unit installed in a hood or the like of the vehicle. In this case, the cleaning liquid injection position is in front of the driver's eyes and obstructs the field of view. Since a large amount of cleaning liquid is used, there is a disadvantage that the frequency of supplying the cleaning liquid to the tank is increased.

  Therefore, in order to eliminate such drawbacks, for example, a wiper device as shown in Patent Document 1 has been developed. The wiper device described in Patent Document 1 includes an attachment piece fixed to the wiper shaft, a joint piece rotatably attached to the attachment piece, a wiper rod fixed to the joint piece, and a wiper rod fixed to the wiper rod. It has a washer nozzle and a flexible hose housed inside the joint piece.

  The cleaning liquid supplied from the wiper shaft to the flexible hose is sprayed from the washer nozzle and reaches the wiping surface. As a result, the distance between the washer nozzle and the wiping surface can be shortened to prevent the cleaning liquid spraying position from deviating greatly due to traveling wind or the like, and the vicinity of the blade rubber can be wetted. Therefore, the wiping surface can be wiped with a small amount of cleaning liquid.

US Pat. No. 5,398,370

  However, according to the wiper device described in Patent Document 1 described above, the wiper shaft side of the flexible hose (pipe) is held by the attachment piece (arm head), and the washer nozzle side of the flexible hose is the joint piece (arm shank). And the caulking part between the wiper rod and the wiper rod.

  Thereby, the length dimension of the part which is not hold | maintained at anything of piping becomes a length dimension substantially equal to the length dimension of an arm shank. Therefore, it may happen that the flexible hose is loosened and protrudes from the arm shank. In particular, in summertime when the ambient temperature is high, the amount of slackness of the pipe is increased, and in some cases, problems such as the pipe rubbing against the wiping surface also occur.

  Therefore, it is conceivable to give a certain degree of tension to the pipe in order to prevent the pipe from slackening. However, in this case, the following another problem may occur. That is, it becomes difficult to place the pipe along the side wall of the arm shank, and the pipe comes into contact with a pressure spring (spring) housed inside the arm shank, which may cause a problem that the pipe deteriorates early.

  The objective of this invention is providing the wiper apparatus which can prevent reliably that piping protrudes from an arm shank, or piping deteriorates early.

In one aspect of the present invention, there is provided a wiper device including a wiper blade for wiping the wiping surface, wherein an arm head having one end portion mounted on a swing shaft and one end portion mounted on the other end portion of the arm head. An arm shank to which the wiper blade is mounted at the other end; a nozzle unit that is provided on the arm shank or the wiper blade and that sprays cleaning liquid toward the wiping surface; and extends along the longitudinal direction of the arm shank. Provided in the shank side pipe accommodating part opened toward the wiping surface side, the pipe accommodated in the shank side pipe accommodating part and sending the cleaning liquid to the nozzle unit, and the shank side pipe accommodating part And a spring that generates an elastic force that presses the wiper blade toward the wiping surface, and the arm shank includes the spring. In both ends of the grayed, it provided a first pipe holding unit and the second pipe holding unit for holding side by side the pipe in a state of non-contact with the spring.

  In another aspect of the present invention, the arm head is provided with a head side pipe accommodating portion that extends along the longitudinal direction thereof, opens toward the wiping surface, and accommodates the pipe.

  In another aspect of the present invention, a pin mounting wall to which a pin that supports one end of the spring is mounted is provided at the other end of the arm head, and the first pipe holding on the one end side of the spring is provided. The portion is formed by a protruding piece protruding from the side wall of the arm shank in the wiping direction of the wiper blade, and the pipe is held by the pin mounting wall and the protruding piece.

  In another aspect of the present invention, the arm shank is formed between the protruding piece and the pin mounting wall when the arm shank is rotated in a direction opposite to a direction in which the arm shank is locked back with respect to the arm head. The dimension of the gap is larger than the diameter dimension of the pipe.

  In another aspect of the present invention, the first pipe holding portion on one end side of the spring includes a first extending portion extending in a wiping direction of the wiper blade from a side wall of the arm shank, and the first extending portion. And a second extending portion extending from the portion to the side opposite to the wiping surface side.

  In another aspect of the present invention, the second pipe holding portion on the other end side of the spring is attached to the support piece extending from the side wall of the arm shank in the wiping direction of the wiper blade, and the support piece. And holding piece.

  In another aspect of the present invention, the arm shank has a third pipe that holds the pipe between the second pipe holding section on the other end side of the spring and the other end of the arm shank. A holding part was provided.

  According to the present invention, since the arm shank is provided with the first pipe holding part and the second pipe holding part for holding the pipes side by side with respect to the springs at both ends of the spring, the first pipe holding part and the second pipe are provided. The length dimension between the holding part and the holding part can be shortened to about the length dimension of the spring. As a result, it is possible to prevent the occurrence of problems such as the piping protruding from the arm shank and rubbing against the wiping surface. Further, since it is not necessary to apply tension to the pipe, the pipe can be prevented from contacting the spring, and as a result, early deterioration of the pipe can be reliably prevented.

It is a perspective view which shows the wiper apparatus of this invention. It is the expansion perspective view which looked at the circumference of a nozzle unit from the front side. It is the expansion perspective view which looked at the circumference of a nozzle unit from the back side. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is the perspective view which looked at the wiper arm from the back side. It is an enlarged view of the broken-line circle | round | yen C part of FIG. (A), (b) is sectional drawing which follows the DD line | wire of FIG. It is an enlarged view of the broken-line circle | round | yen E part of FIG. It is sectional drawing which follows the FF line | wire of FIG. (A), (b) is a perspective view which shows a 1st holder. It is a figure which shows the attachment procedure to the arm shank of a 1st holder. It is an enlarged view of the broken-line circle | round | yen G part of FIG. It is sectional drawing which follows the HH line of FIG. (A), (b) is a perspective view which shows a 2nd holder. It is a figure which shows the attachment procedure to the arm shank of a 2nd holder. (A), (b) is a figure corresponding to FIG. 7 of Embodiment 2. FIG. FIG. 10 is a perspective view showing a first holder according to Embodiment 3. (A), (b) is a perspective view which shows the 1st holder of Embodiment 4. FIG. It is a perspective view which shows the 1st holder of Embodiment 5.

  Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the drawings.

  1 is a perspective view showing the wiper device of the present invention, FIG. 2 is an enlarged perspective view of the periphery of the nozzle unit as viewed from the front side, and FIG. 3 is an enlarged perspective view of the periphery of the nozzle unit as viewed from the back side. 1 is a sectional view taken along line AA in FIG. 1, FIG. 5 is a sectional view taken along line BB in FIG. 2, and FIG. 6 is a perspective view of the wiper arm as viewed from the back side.

  As shown in FIG. 1, the wiper device 10 includes a wiper blade 20 and a wiper arm 30. The wiper blade 20 is rotatably mounted on the distal end side of the wiper arm 30 and slidably contacts the windshield (wiping surface) 11 on the front side of a vehicle such as an automobile. The base end side of the wiper arm 30 is attached to the swing shaft PS on the front side of the vehicle. Then, by turning on a wiper switch (not shown) in the passenger compartment to rotate a wiper motor (not shown), the swing shaft PS is swung. As a result, the wiper device 10 performs a reciprocating wiping operation for a predetermined wiping range AR formed on the windshield 11 toward the forward path and the backward path as indicated by arrows in the drawing.

  As shown in FIGS. 1 to 5, the wiper blade 20 includes a blade rubber 21 that comes into contact with the windshield 11, a holder member 22 that holds the blade rubber 21, and a coupling provided in the middle portion in the longitudinal direction of the holder member 22. Part 23. A pair of end caps CP are attached to both end portions of the holder member 22 in the longitudinal direction. As a result, the blade rubber 21 held by the holder member 22 is prevented from coming off.

  As shown in FIGS. 4 and 5, the blade rubber 21 connects the main body 21 a held by the holder member 22, the lip 21 b in contact with the windshield 11, and the main body 21 a and the lip 21 b. And a neck portion 21c. The blade rubber 21 is formed in an elongated shape by extruding an elastic material such as rubber, and the cross-sectional shape thereof is uniform throughout the entire length direction.

  The thickness dimension of the neck portion 21c along the operation direction (the left-right direction in the drawing) of the blade rubber 21 is set to be thinner than the thickness dimensions of the main body portion 21a and the lip portion 21b, and is easily elastically deformed. Accordingly, when the wiper blade 20 moves on the forward path side and the backward path side on the windshield 11, the inclination of the lip portion 21b is allowed, and the tip portion of the lip portion 21b smoothly follows the moving direction of the wiper blade 20. It can be done. Accordingly, it is possible to reliably wipe off deposits (not shown) such as rainwater and dust attached to the windshield 11.

  As shown in FIG. 4, the holder member 22 includes a holder main body 22a and a fin portion 22b. The holder main body 22 a and the fin portion 22 b are integrated by two-color molding of dissimilar materials having different hardnesses, and are formed long like the blade rubber 21.

  The holder main body 22a is made of a flexible plastic or the like so as to be able to follow the curved shape (not shown) of the windshield 11 while ensuring sufficient strength to hold the main body 21a of the blade rubber 21. It is made of a resin material. On the other hand, the fin portion 22b is formed of an elastic material such as rubber having a hardness lower than that of the holder body 22a. When the traveling wind hits the fin portion 22b, down force is generated in the wiper blade 20, and thus the wiping performance of the blade rubber 21 is kept good.

  Inside the holder main body 22a, a pair of vertebras 22c are provided at a predetermined interval. Each of the vertebras 22c is formed of a steel plate having a spring property, and is arranged so as to be mirror-symmetrical so as to sandwich the main body portion 21a of the blade rubber 21 from the forward path side and the backward path side. In a natural state in which no external force is applied, each vertical bra 22c is curved with a curvature larger than that of the windshield 11, and elastically deforms the holder member 22 and the blade rubber 21 in accordance with the curvature of the windshield 11. It is like that. Thereby, the whole area along the longitudinal direction of the lip portion 21 b is brought into close contact with the windshield 11.

  As shown in FIGS. 1 and 5, a connecting portion 23 is provided in the middle portion of the holder member 22 in the longitudinal direction. The connecting portion 23 includes a connecting main body 23a, a base plate 23b, and a cover member 23c. The connection main body 23a is formed in a substantially U-shaped cross section by pressing a steel plate or the like, and is fixed to each of the vertebras 22c by a fixed leg portion (not shown) provided integrally.

  A cylindrical pin 23d made of steel is caulked and fixed to the coupling body 23a, and a hook fixing member 23e formed of a resin material such as plastic is rotatably attached to the cylindrical pin 23d. Here, an arm piece 60 (see FIG. 2) fixed to the distal end side of the wiper arm 30 is connected to the hook fixing member 23e by one touch. The cylindrical pin 23d and the hook fixing member 23e also constitute the connecting portion 23.

  The base plate 23b is formed in a plate shape by a resin material such as plastic, and the base plate 23b is attached to each vertebra 22c by a fixed leg portion 23f provided integrally. Here, the connection main body 23 a is disposed on the fin portion 22 b side (front side) of the holder member 22, and the base plate 23 b is disposed on the holder main body 22 a side (back side) of the holder member 22.

  The cover member 23c is formed in a substantially box shape from a resin material such as plastic, and is attached to the outside of the connection body 23a by a plurality of integrally provided engaging claws (not shown). The cover member 23c covers the side surface portion and the like of the connecting body 23a, thereby improving the appearance of the wiper blade 20.

  As shown in FIGS. 1 and 6, the wiper arm 30 includes an arm head 40, an arm shank 50, and an arm piece 60.

  The arm head 40 is formed in a rod shape curved into a substantially J shape by casting or the like of an aluminum material. A shaft fixing portion 41 attached to the swing shaft PS is provided at one end portion (right side in the figure) of the arm head 40. On the other hand, the other end portion (left side in the figure) of the arm head 40 is provided with a shank mounting portion 42 to which one end portion of the arm shank 50 is rotatably mounted.

  As shown in FIG. 6, the shank mounting portion 42 is provided with a support pin 42 a that rotatably supports one end portion of the arm shank 50. The support pin 42a is formed of a columnar steel material and extends in a direction intersecting with the extending direction of the swing shaft PS. As a result, the arm shank 50 is rotatably mounted on the arm head 40 without rattling, and can be easily locked back.

  The shank mounting portion 42 is provided with a pair of pin mounting walls 42b and 42c, and a hook pin 42d on which the hook FK is hooked is provided between the pin mounting walls 42b and 42c. The hook pin 42d constitutes a pin in the present invention, extends in the same direction as the support pin 42a, and is formed of a columnar steel material like the support pin 42a.

  Here, one pin mounting wall 42 c of the pair of pin mounting walls 42 b and 42 c is disposed at a substantially central portion along the short direction of the arm head 40. As a result, the spring SP hooked on the hook FK is arranged close to one side (lower side in the figure) along the short direction of the arm shank 50. Thus, the hook pin 42d supports the end of the spring SP via the hook FK.

  On the windshield 11 side (the front side in the figure) of the arm head 40, a head side pipe accommodating portion 43 opened toward the windshield 11 side is provided. The head side pipe housing portion 43 is provided over the entire length of the arm head 40 in accordance with the shape of the arm head 40. That is, the cross-sectional shape along the short direction of the arm head 40 is substantially U-shaped.

  The head-side pipe accommodating portion 43 accommodates an outward-side washer tube (piping) 44 and a backward-side washer tube (piping) 45. Here, in order to make the arrangement structure of the washer tubes 44 and 45 easy to understand, the washer tubes 44 and 45 are shaded in the drawing.

  As indicated by the broken line arrows in FIG. 1, each of the washer tubes 44 and 45 is supplied with a forward-side washer liquid (cleaning liquid) W1 and a backward-side washer liquid (cleaning liquid) W2 from a not-shown washer pump. Here, the washer tubes 44 and 45 are for feeding the respective washer liquids W1 and W2 to a nozzle unit 70 described later. As shown in FIG. 6, the forward pass washer tube 44 is formed of a vehicle side tube 44a and a nozzle side tube 44b. The return-side washer tube 45 is formed of a vehicle-side tube 45a and a nozzle-side tube 45b.

  The vehicle-side tube 44a and the nozzle-side tube 44b, and the vehicle-side tube 45a and the nozzle-side tube 45b are connected to each other by a joint member 46 that is fixed to the inside of the head-side pipe housing portion 43. In this way, by fixing the joint member 46 inside the head side pipe housing portion 43, the washer tubes 44 and 45 are prevented from loosening in the arm head 40 portion. Further, the vehicle side tubes 44a and 45a and the nozzle side tubes 44b and 45b are divided into the arm head 40 and the arm shank by dividing the vehicle side tubes 44a and 45a and the nozzle side tubes 44b and 45b with the joint member 46 as a boundary. 50 can be easily assembled.

  As shown in FIG. 6, the swing shaft PS side of each of the washer tubes 44 and 45 housed in the head side pipe housing portion 43 is pulled out to the outside of the arm head 40 from a position avoiding the shaft fixing portion 41. ing. Specifically, the swing shaft PS side of each of the washer tubes 44 and 45 is pulled out of the arm head 40 while being arranged in the extending direction (axial direction) of the swing shaft PS. Yes.

  Thereby, the periphery of the shaft fixing portion 41 in the arm head 40 is prevented from being widened and enlarged. Further, when the arm head 40 is swung, each of the washer tubes 44 and 45 is elastically deformed with the same radius of curvature along the periphery of the shaft fixing portion 41, so that the drive-side swing shaft PS (wiper motor) is used. The applied load can be reduced.

  On the other hand, the arm shank 50 side of each of the washer tubes 44 and 45 accommodated in the head side pipe accommodating portion 43 is pulled out to the outside of the arm head 40 from a position avoiding one pin mounting wall 42c. Specifically, the arm shank 50 side of each of the washer tubes 44 and 45 accommodated in the head side pipe accommodating portion 43 is armed in a state where the hook pins 42d are arranged in the extending direction (axial direction). It is pulled out of the head 40.

  Thereby, as shown in FIG. 6, the washer tubes 44 and 45 can be arranged close to the other side (upper side in the drawing) along the short direction of the arm shank 50. Further, when the arm shank 50 is locked back with respect to the arm head 40, the washer tubes 44 and 45 are elastically deformed with the same curvature radius, so that substantially the same load is applied to both the washer tubes 44 and 45. As a result, it is possible to suppress the occurrence of problems such as the early deterioration of one of the washer tubes 44 and 45.

  As shown in FIG. 6, the arm shank 50 is formed in a substantially U-shaped cross section by pressing a steel plate or the like, and is formed in a substantially straight long rod shape. One end portion (right side in the figure) of the arm shank 50 is rotatably attached to the shank attachment portion 42 of the arm head 40, and the arm piece 60 is attached to the other end portion (left side in the figure) of the arm shank 50. A wiper blade 20 (see FIG. 1) is attached. Here, in the present embodiment, the wiper blade 20 is attached to the other end portion of the arm shank 50 via the arm piece 60. However, in the present invention, the wiper blade 20 is attached to the other end portion of the arm shank 50. A direct mounting form is also included. In other words, a form in which the wiper blade fixing portion formed in the same shape as the arm piece 60 is integrally provided at the other end portion of the arm shank 50 is also included.

  A nozzle unit 70 that injects each of the washer liquids W1 and W2 (see FIG. 3) toward the windshield 11 is mounted on the other end side along the longitudinal direction of the arm shank 50, that is, on the front end side of the wiper arm 30. ing.

  The arm shank 50 includes a bottom wall 51 and a pair of side walls 52 a and 52 b erected substantially perpendicular to the bottom wall 51. A portion surrounded by the bottom wall 51 and the pair of wall portions 52 a and 52 b is a shank side pipe housing portion 53. Each of the washer tubes 44 and 45 is accommodated in the shank side pipe accommodating part 53, and the shank side pipe accommodating part 53 is connected to the head side pipe accommodating part 43 provided in the arm head 40. That is, the shank side pipe accommodating portion 53 is provided along the longitudinal direction of the arm shank 50 and is opened toward the windshield 11.

  Further, the spring SP is accommodated in the shank accommodating portion 53 so as to be parallel to the respective washer tubes 44 and 45, and this spring SP generates an elastic force that presses the wiper blade 20 toward the windshield 11. It is supposed to be.

  7 is an enlarged view of a broken-line circle C portion of FIG. 6, and FIGS. 8A and 8B are cross-sectional views taken along the line DD of FIG.

  As shown in FIGS. 7 and 8, a protruding piece 52 c serving as a first pipe holding portion is provided on one end side along the longitudinal direction of the arm shank 50, that is, on the base end side of the wiper arm 30. The protruding piece 52 c is integrally provided on the side wall 52 b on the return path side of the arm shank 50. Specifically, the protruding piece 52 c protrudes toward the side wall 52 a on the forward path side of the arm shank 50 and extends parallel to the bottom wall 51. That is, the protruding piece 52 c protrudes in the wiping direction from the side wall 52 b to the outward path side of the wiper blade 20 (see FIG. 1) and extends in parallel with the windshield 11. The protruding piece 52c is provided integrally with the side wall 52b when the arm shank 50 is pressed.

  Further, as shown in FIG. 7, the protruding amount of the protruding piece 52c from the side wall 52b is a dimension La between the tip end portion of the protruding piece 52c and one pin mounting wall 42c provided on the arm head 40. The amount of protrusion is such that the gap S can be formed. Here, the dimension La of the gap S is variable. Specifically, as shown in FIG. 7, under the condition that the wiper blade 20 is tilted toward the windshield 11, the dimension La of the gap S is the diameter dimension r of each of the washer tubes 44 and 45 (FIG. 8). Smaller than (see (b)) (La <r). This reliably prevents the washer tubes 44 and 45 from protruding or dropping from the shank side pipe housing portion 53 during operation of the wiper device 10.

  On the other hand, when the arm shank 50 is rotated with respect to the arm head 40 in the direction of the broken line arrow R1 in FIG. When it is rotated, it becomes as shown in FIG. Specifically, the dimension Lb of the gap S is slightly larger than the diameter dimension r of each of the washer tubes 44 and 45 (Lb> r). Thereby, in a state before the wiper device 10 is attached to the vehicle, that is, in a single state of the wiper device 10, the respective washer tubes 44 and 45 are easily assembled to both the head side pipe housing part 43 and the shank side pipe housing part 53. be able to.

  As shown in FIG. 7, the protruding piece 52 c faces the hook FK from the short direction of the arm shank 50. Thus, the protruding piece 52c is provided at a position corresponding to one end side of the spring SP in the arm shank 50, that is, in the vicinity of one end side of the spring SP. As shown in FIG. 8, the protruding piece 52c is connected to the pin mounting wall 42c and the washer tubes 44, 45 together with the short side of the arm shank 50 in a state where the washer tubes 44, 45 are combined. It is held close to the other side (left upper side in the figure) along the direction.

  As described above, the protruding piece 52c has a function of holding the washer tubes 44 and 45 side by side with the spring SP on one end side of the spring SP together with the one pin mounting wall 42c. Here, each washer tube 44, 45 is arranged away from the side of the spring SP without contacting the spring SP. Therefore, the washer tubes 44 and 45 and the spring SP are not rubbed. Thus, the protruding piece 52c holds the washer tubes 44 and 45 together with the one pin mounting wall 42c in a non-contact state with respect to the spring SP.

  9 is an enlarged view of a broken-line circle E portion of FIG. 6, FIG. 10 is a sectional view taken along line FF of FIG. 9, and FIGS. 11A and 11B are perspective views showing the first holder. FIG. 12 is a diagram showing a procedure for attaching the first holder to the arm shank.

  As shown in FIGS. 9 and 10, a support piece 52d and a first holder 54 attached to the support piece 52d are provided at a substantially central portion along the longitudinal direction of the arm shank 50. The support piece 52d and the first holder 54 are arranged on the other end side along the longitudinal direction of the arm shank 50 with respect to the position where the protruding piece 52c is arranged, and the second pipe holding portion in the present invention is arranged. It is composed. Moreover, the 1st holder 54 comprises the holding piece in this invention.

  As shown in FIG. 12, the support piece 52 d is integrally provided on the side wall 52 a on the forward path side of the arm shank 50. Specifically, the support piece 52 d protrudes toward the side wall 52 b on the return path side of the arm shank 50. That is, the support piece 52d protrudes in the wiping direction from the side wall 52a to the return path side of the wiper blade 20 (see FIG. 1). Further, the support piece 52 d is formed in an approximately L shape, and the tip end portion of the support piece 52 d extends to the tip end side of the wiper arm 30. The support piece 52d is provided integrally with the side wall 52a when the arm shank 50 is pressed.

  A hook hole 52e for hooking the other end of the spring SP is provided at the tip of the support piece 52d. The hook hole 52e is a long hole extending in the longitudinal direction of the arm shank 50 so that the other end of the spring SP can be easily hooked. Thus, one end of the spring SP is hooked on the hook pin 42d (see FIG. 7) of the arm head 40 via the hook FK, and the other end of the spring SP is hooked on the hook hole 52e of the arm shank 50. . Thereby, the elastic force of the spring SP acts to press the wiper blade 20 toward the windshield 11 (see FIG. 1).

  A mounting body 52f to which the first holder 54 is mounted is provided on the tip side of the support piece 52d and on the nozzle unit 70 side (left side in the drawing) opposite to the spring SP side. An engaging recess 52g is provided on the side of the mounting body 52f opposite to the hooking hole 52e. One of a pair of positioning convex portions 54d provided on the first holder 54 is engaged with the engaging concave portion 52g. The other positioning projection 54d provided on the first holder 54 is adapted to engage with the arc-shaped portion of the hooking hole 52e. Thereby, the first holder 54 is securely attached to the support piece 52d without rattling.

  As shown in FIG. 11, the first holder 54 is formed of a resin material such as plastic into a predetermined shape and includes a main body portion 54a that is attached to the attachment main body 52f. The main body 54a is provided with an insertion hole 54b through which the mounting main body 52f is inserted, and the mounting main body is mounted inside the insertion hole 54b with the first holder 54 mounted on the mounting main body 52f. A pressing protrusion 54c (see FIG. 11B) that is pressed by 52f is provided. Thereby, rattling of the first holder 54 is prevented.

  In addition, positioning protrusions 54d formed in a substantially cylindrical shape are respectively provided on one opening side portion and the other opening side portion of the insertion hole 54b in the main body portion 54a. As shown in FIG. 10, the protruding heights of these positioning convex portions 54d are substantially the same as the protruding heights of the pressing protrusions 54c. Specifically, the projecting heights of the positioning convex portion 54d and the pressing projection 54c are each 2.0 mm, for example, so as not to obstruct the insertion of the mounting body 52f into the insertion hole 54b. Then, with the first holder 54 mounted on the mounting body 52f, one positioning convex portion 54d is engaged with the engaging concave portion 52g, and the other positioning convex portion 54d is an arc-shaped portion of the hooking hole 52e. Is engaged.

  As shown in FIG. 9, with the first holder 54 attached to the attachment main body 52f, the first tube holder that holds the return side washer tube 45 on the side wall 52b side (return side) of the main body 54a. A portion 54e is provided. In addition, a second tube holding portion 54f that holds the forward pass washer tube 44 is provided on the bottom wall 51 side of the main body portion 54a.

  As shown in FIGS. 10 and 11, the first tube holding portion 54e includes a support surface 54h of a projecting piece 54g that protrudes from the main body portion 54a toward the side wall 52b, and a side surface that faces the side wall 52b of the main body portion 54a. 54k. An inclined wall 52h inclined at approximately 45 degrees is provided between the bottom wall 51 and the side wall 52b of the arm shank 50, and a return path is provided between the inclined wall 52h, the support surface 54h, and the side surface 54k. A side washer tube 45 is held. In this way, since the return-side washer tube 45 is supported at three points, rattling is effectively suppressed.

  The second tube holding portion 54f has a support surface 54n of each of the pair of projecting pieces 54m projecting from the main body portion 54a toward the bottom wall 51, and a bottom surface 54p facing the bottom wall 51 of the main body portion 54a. doing. The forward-side washer tube 44 is held between the inclined wall 52h, the support surface 54n, and the bottom surface 54p. As described above, the forward-side washer tube 44 is also supported at three points, so that rattling is effectively suppressed.

  As shown in FIG. 9, the support piece 52d and the first holder 54 are provided at a position corresponding to the other end side of the spring SP in the arm shank 50, that is, in the vicinity of the other end side of the spring SP. Then, as shown in FIG. 9, the support piece 52 d and the first holder 54 are arranged along the short direction of the arm shank 50 in a state where the washer tubes 44 and 45 are combined. It is held close to the other side (upper side in the figure).

  Thus, the support piece 52d and the first holder 54 have a function of holding the washer tubes 44 and 45 side by side with the spring SP on the other end side of the spring SP. Here, each washer tube 44, 45 is arranged away from the side of the spring SP without contacting the spring SP. Therefore, the washer tubes 44 and 45 and the spring SP are not rubbed. As described above, the support piece 52d and the first holder 54 hold the washer tubes 44 and 45 in a non-contact state with respect to the spring SP.

  In order to mount the first holder 54 on the mounting body 52f, first, the first holder 54 is made to face the mounting body 52f from the distal end side along the longitudinal direction of the arm shank 50, as indicated by a broken line arrow M1 in FIG. . Thereafter, the first holder 54 is slightly inclined with respect to the mounting body 52f, and the engagement recess 52g side of the mounting body 52f is positioned between the positioning projection 54d and the pressing projection 54c (see FIG. 11B). Plug in. Thereafter, the first holder 54 is made parallel to the mounting body 52f, and the insertion operation of the mounting body 52f on the engagement recess 52g side is continued. As a result, the pair of positioning projections 54d are respectively engaged with both the arc-shaped portion of the hooking hole 52e and the engagement recess 52g, whereby the mounting of the first holder 54 to the mounting body 52f is completed. .

  Here, as shown in FIG. 6, the separation distance L1 between the position where the protruding piece 52c and the one pin mounting wall 42c are arranged and the position where the support piece 52d and the first holder 54 are arranged is the distance of the spring SP. The length is almost the same as the length. Further, the separation distance L <b> 1 is approximately 1/3 of the length of the arm shank 50. Thereby, each washer tube 44 and 45 can be arranged side by side with respect to spring SP in the non-contact state separated from spring SP, and separation distance L1 is the length dimension of spring SP. Can be as short as possible. Accordingly, it is possible to reliably prevent the washer tubes 44 and 45 from being loosened and protruding from the shank side pipe accommodating portion 53 to the outside.

  13 is an enlarged view of a broken-line circle G portion of FIG. 6, FIG. 14 is a cross-sectional view taken along the line HH of FIG. 13, and FIGS. 15A and 15B are perspective views showing the second holder. FIG. 16 is a diagram showing a procedure for attaching the second holder to the arm shank.

  As shown in FIGS. 13 and 14, between the first holder 54 and the nozzle unit 70 along the longitudinal direction of the arm shank 50, a support piece 52k and a second holder 55 attached to the support piece 52k are provided. Is provided. The support piece 52k and the second holder 55 are provided between the support piece 52d and the first holder 54 on the other end side of the spring SP and the other end portion of the arm shank 50, and are the third in the present invention. The pipe holding part is configured.

  As shown in FIG. 16, the support piece 52 k is integrally provided on the side wall 52 a on the forward path side of the arm shank 50. Specifically, the support piece 52k protrudes toward the side wall 52b on the return path side of the arm shank 50. That is, the support piece 52k protrudes in the wiping direction from the side wall 52a to the return path side of the wiper blade 20 (see FIG. 1). The support piece 52k is integrally provided on the side wall 52a when the arm shank 50 is pressed.

  A mounting hole 52m penetrating in the thickness direction of the support piece 52k is provided at a substantially central portion of the support piece 52k. An engagement protrusion 55e (see FIG. 15B) of the second holder 55 enters and is attached to the attachment hole 52m. Here, the diameter of the mounting hole 52m is slightly larger than the diameter of the engaging protrusion 55e. Accordingly, the second holder 55 can be easily and reliably attached to the support piece 52k, and rattling of the second holder 55 with respect to the support piece 52k is suppressed.

  As shown in FIG. 15, the second holder 55 is formed in a substantially rectangular shape by a resin material such as plastic, and is attached to the support piece 52k. The 2nd holder 55 is provided with the main-body part 55a, and the nail | claw part 55b formed in the substantially circular arc shape is integrally provided in the front end side along the longitudinal direction of the main-body part 55a. Further, on both sides along the short side direction of the main body portion 55a, a meat having a slide groove 55c that is formed thicker than the main body portion 55a and into which the side portion 52n (see FIG. 16) of the support piece 52k enters. Thick portions 55d are respectively provided. That is, a thin claw portion 55b is provided on the distal end side of the second holder 55, and a pair of thick portions 55d that are thicker than the claw portion 55b are provided on the proximal end side of the second holder 55. Yes. Thereby, the 2nd holder 55 becomes a level | step difference shape along the longitudinal direction.

  Further, an engagement protrusion 55e formed in a substantially cylindrical shape is provided on the thick portion 55d side of the main body portion 55a. The engagement protrusion 55e is attached to the attachment hole 52m of the support piece 52k in a state where the second holder 55 is attached to the support piece 52k. Here, the protrusion height of the engagement protrusion 55e is set to a protrusion height (for example, 1.5 mm) smaller than the plate thickness of the support piece 52k. Thereby, the engagement protrusion 55e does not obstruct the mounting of the second holder 55 to the support piece 52k.

  Further, the main body portion 55 a is provided with a pair of through holes 55 f extending in the longitudinal direction of the second holder 55. Thereby, the rigidity around the engaging protrusion 55e of the main body 55a is lowered, and the mounting of the second holder 55 on the support piece 52k can be easily performed.

  As shown in FIG. 14, the claw portion 55b presses the return-side washer tube 45 toward the inclined wall 52h of the arm shank 50 with the second holder 55 attached to the support piece 52k. It is like that. On the other hand, the pair of thick portions 55 d are configured to press the outward-side washer tube 44 toward the bottom wall 51 of the arm shank 50.

  In this way, the second holder 55 is formed in a stepped shape, so that the return side washer tube 45 and the outward pass washer tube 44 are pressed against the inclined wall 52 h and the bottom wall 51, respectively. As a result, it is possible to effectively prevent each of the washer tubes 44 and 45 from rattling inside the arm shank 50, and to ensure that each of the washer tubes 44 and 45 is loosened and protrudes from the shank side pipe housing portion 53 to the outside. Can be prevented.

  In order to attach the second holder 55 to the support piece 52k, first, as shown by the broken line arrow M2 in FIG. 16, the claw portion 55b of the second holder 55 is removed from the side wall 52a along the short direction of the arm shank 50. It faces the support piece 52k. Thereafter, each side portion 52n of the support piece 52k is inserted into each slide groove 55c (see FIG. 15B) of each thick portion 55d. Thereafter, the second holder 55 is further inserted into the support piece 52k, so that the engagement protrusion 55e (see FIG. 15B) of the second holder 55 enters the mounting hole 52m of the support piece 52k. Thereby, mounting | wearing to the support piece 52k of the 2nd holder 55 is completed.

  Here, as shown in FIG. 6, the second holder 55 is a substantially middle position between the position where the first holder 54 is disposed and the position where the nozzle unit 70 is located with respect to the longitudinal direction of the arm shank 50. Is arranged. Specifically, the separation distance L2 between the second holder 55 and the first holder 54 is substantially the same distance as the separation distance L3 between the second holder 55 and the nozzle unit 70 (L2≈L3).

  Further, the separation distance L1 between the protruding piece 52c and the first holder 54, the separation distance L2 between the second holder 55 and the first holder 54, and the separation distance L3 between the second holder 55 and the nozzle unit 70 are respectively The distances are substantially equal (L1≈L2≈L3). Thereby, also between the 2nd holder 55 and the 1st holder 54 and between the 2nd holder 55 and the nozzle unit 70, similarly to between the protrusion piece 52c and the 1st holder 54, each washer tube 44 is obtained. 45 are surely prevented from protruding from the shank side pipe accommodating portion 53 to the outside.

  As shown in FIG. 6, the arm piece 60 fixed to the distal end side of the arm shank 50 is formed in a predetermined shape by pressing a steel material or the like. The distal end side of the arm piece 60 is formed in a substantially U shape. The distal end portion of the arm piece 60 is connected to the hook fixing member 23e (see FIG. 5) by one touch. Further, the proximal end side of the arm piece 60 is fixed to the inside of the distal end portion of the arm shank 50 by a pair of rivets R (see FIG. 2). Thus, the arm shank 50 made of a steel plate and the arm piece 60 made of a steel material are riveted to each other so that they are firmly fixed without rattling.

  The nozzle unit 70 is fixed to the arm piece 60 by a fixing screw SC (see FIG. 6). Here, the fixing screw SC is screwed into the screw hole HL shown in FIG. 2 from the lower side in the drawing, that is, from the wiper blade 20 side. A part of the arm piece 60 and the nozzle unit 70 including the screw hole HL is covered with the distal end side of the arm shank 50. Thereby, the periphery of the nozzle unit 70 of the wiper device 10 is cleaned to improve the appearance.

  Thus, by fixing the nozzle unit 70 to the arm piece 60 attached to the hook fixing member 23e, the nozzle unit 70 is disposed close to the hook fixing member 23e. Further, the nozzle unit 70 is firmly fixed to the arm piece 60 with the fixing screw SC in the vicinity of the hook fixing member 23e. Therefore, the displacement of the nozzle unit 70 with respect to the wiper blade 20 is minimized.

  As shown in FIGS. 2 and 3, the nozzle unit 70 is formed by injection molding a resin material such as plastic, so that the cross-sectional shape in the direction (short direction) intersecting the longitudinal direction of the arm shank 50 is substantially U-shaped. It is formed into a shape. The nozzle unit 70 includes an outward path side block 71 and a return path side block 72.

  On the proximal end side of the outward path block 71, an outward path first wall portion 71 a directed to the longitudinal direction proximal end side of the wiper blade 20 is provided. The other end side of the forward pass washer tube 44 is connected to the forward pass side first wall 71 a side of the forward pass block 71. On the other hand, on the distal end side of the outbound path side block 71, an outbound path side arm portion 71b that gradually becomes tapered toward the distal end side is integrally provided. The forward path side arm portion 71b is provided with a forward path side second wall portion 71c directed to the distal end side in the longitudinal direction of the wiper blade 20.

  Further, an outward facing surface 71 d that faces the windshield 11 is formed between the outward first wall 71 a and the outward second wall 71 c of the outward block 71. A forward-side nozzle cap 71e is provided in a portion of the forward-side facing surface 71d near the outward-path second wall portion 71c.

  The forward path side second wall portion 71c is provided with the forward path side first injection nozzle A1. The forward path side first injection nozzle A <b> 1 is directed to the front end side in the longitudinal direction of the wiper blade 20. As a result, during the outward wiping operation of the wiper blade 20, the wiper blade 20 is wetted on the front end side in the longitudinal direction and on the forward windshield 11 (see FIG. 1).

  Here, the outward-path-side first injection nozzle A1 employs an eyeball type nozzle in which the injection position of the outward-path washer liquid W1 is variable. Specifically, the injection position of the outward path side first injection nozzle A1 can be adjusted by turning the nozzle with a wire or the like. Thereby, the injection position of the forward path side first injection nozzle A1 can be optimized in accordance with specifications such as the difference in length of the wiper blade 20 attached to the wiper arm 30.

  The forward path side nozzle cap 71e is provided with the forward path side second injection nozzle B1 and the forward path side third injection nozzle C1. In these forward path side second injection nozzles B1 and forward path side third injection nozzles C1, the injection position of the forward path side washer liquid W1 is a fixed nozzle. The forward-side washer fluid W1 ejected from the forward-side second injection nozzle B1 and the outward-side third injection nozzle C1 wets the outward side in the vicinity of the longitudinal center of the blade rubber 21. .

  The forward path side first wall 71a is provided with a forward path side fourth injection nozzle D1. This forward path side fourth injection nozzle D <b> 1 is directed to the longitudinal base end side of the wiper blade 20. As a result, when the wiper blade 20 performs the outward path wiping operation, the wiper blade 20 is wetted on the longitudinal direction proximal end side and on the forward windshield 11 (see FIG. 1).

  Here, also in the forward path side fourth injection nozzle D1, an eyeball type nozzle in which the injection position of the forward path side washer liquid W1 is variable is adopted, similarly to the forward path side first injection nozzle A1. Therefore, according to the specification of the wiper blade 20, the injection position of the forward path side fourth injection nozzle D1 can be optimized.

  On the proximal end side of the return path side block 72, a return path side first wall portion 72 a directed to the longitudinal direction proximal end side of the wiper blade 20 is provided. The other end side of the return side washer tube 45 is connected to the return side first wall 72 a side of the return side block 72. On the other hand, on the distal end side of the return path side block 72, a return path arm portion 72b that gradually becomes tapered toward the distal end side is integrally provided. The return path side arm portion 72b is provided with a return path side second wall portion 72c directed to the distal end side in the longitudinal direction of the wiper blade 20. Here, the length dimension of the return path side arm part 72b is shorter than the length dimension of the forward path side arm part 71b.

  A return-side facing surface 72 d that faces the windshield 11 is formed between the return-side first wall 72 a and the return-side second wall 72 c of the return-side block 72. A return-side nozzle cap 72e is provided on a portion of the return-side facing surface 72d near the return-side first wall 72a.

  A return-side first injection nozzle E1 is provided on the return-side second wall 72c. The return side first injection nozzle E <b> 1 is directed to the front end side in the longitudinal direction of the wiper blade 20. As a result, when the wiper blade 20 performs the return path side wiping operation, the wiper blade 20 is wetted on the front end side in the longitudinal direction and on the windshield 11 on the return path side (see FIG. 1).

  Here, the return-side first injection nozzle E1 employs an eyeball type nozzle in which the injection position of the return-side washer liquid W2 is variable. Specifically, the injection position can be adjusted in the same manner as the forward path side first injection nozzle A1 described above. Accordingly, the injection position of the return-side first injection nozzle E1 can be optimized in accordance with specifications such as the difference in length of the wiper blade 20 attached to the wiper arm 30.

  The return-side nozzle cap 72e is provided with a return-side second injection nozzle F1. In the return-side second injection nozzle F1, the injection position of the return-side washer fluid W2 is a fixed nozzle. The return-side washer fluid W2 ejected from the return-side second injection nozzle F1 wets the return-path side in the vicinity of the central portion in the longitudinal direction of the blade rubber 21.

  A return-side third injection nozzle G1 is provided on the return-side first wall portion 72a. The return side third injection nozzle G <b> 1 is directed to the base end side in the longitudinal direction of the wiper blade 20. As a result, when the wiper blade 20 performs the return path side wiping operation, the wiper blade 20 is wetted on the proximal end in the longitudinal direction and on the windshield 11 on the return path side (see FIG. 1).

  Here, in the return-side third injection nozzle G1, as in the return-side first injection nozzle E1, an eyeball type nozzle in which the injection position of the return-side washer liquid W2 is variable is adopted. Therefore, according to the specification of the wiper blade 20, it is possible to optimize the injection position of the return side third injection nozzle G1.

  In the present embodiment, the forward-side washer liquid W1 is sprayed to the windshield 11 by the forward-side injection nozzles A1 to D1, and the return-side washer liquid W2 is winded by the backward-side injection nozzles E1 to G1. The injection position with respect to the shield 11 is adjusted according to the following criteria.

  Here, if the spray positions of the washer fluids W1 and W2 are close to the blade rubber 21, the sprayed washer fluids W1 and W2 will not hinder the visibility of the driver or the like. W1 and W2 are wiped off immediately after injection. For this reason, dust or the like adhering to the windshield 11 is not melted and left unwiped (deterioration in cleaning properties).

  On the other hand, if the spray positions of the washer liquids W1 and W2 are moved away from the blade rubber 21, the dust attached to the windshield 11 is surely melted and wiped cleanly with no wiping residue left. However, the sprayed washer liquids W1 and W2 hinder the visibility of the driver or the like (visibility inhibition).

  Accordingly, the peripheral speed of the blade rubber 21 is set to [v], the melting time of the deposits is set to [t], and the distance from the blade rubber 21 to the injection position of each of the washer liquids W1, W2, that is, the injection distance is set to [L]. , The injection distance [L] is adjusted so as to satisfy the equation [L = v × t]. As a result, it is possible to achieve a balance between the contradictory phenomena of improving the cleaning property of the deposit and suppressing the visual field inhibition. In the present embodiment, the injection distance [L] is about 15 mm.

  However, the peripheral speed [v] of the blade rubber 21 includes the peripheral speed [v1] on the distal end side (outer peripheral side) of the blade rubber 21 and the peripheral speed [v2] on the base end side (inner peripheral side) of the blade rubber 21. (V1> v2), the average value of the peripheral speed [v1] and the peripheral speed [v2] is used. The peripheral speed [v] is usually the moving speed of the blade rubber 21 at the time of [Low] operation of a frequently used wiper switch.

  Next, how the forward pass washer fluid W1 and the backward pass washer fluid W2 flow will be described with reference to the drawings.

  By operating a washer switch (not shown), a washer pump (not shown) is driven, and each of the washer liquids W1 and W2 is sent to the forward side washer tube 44 and the backward side washer tube as shown by the broken arrows in FIG. 45 respectively. Then, as shown in FIG. 3, the washer liquids W <b> 1 and W <b> 2 enter the forward block 71 and the backward block 72, respectively. As a result, as shown by the broken-line arrows in FIG. 3, the washer liquids W1 and W2 are respectively ejected from the forward-side injection nozzles A1 to D1 and the backward-side injection nozzles E1 to G1.

  Here, the driving direction of the washer pump is switched according to the switching of the moving direction of the blade rubber 21. More specifically, during the wiping operation of the wiper blade 20 toward the forward path, the forward path washer fluid W1 is supplied only to the forward path block 71. On the other hand, during the wiping operation of the wiper blade 20 toward the return path, the return path washer liquid W2 is supplied only to the return path block 72.

  As described above in detail, according to the wiper device 10 according to the present embodiment, the protruding pieces that hold the washer tubes 44 and 45 side by side with respect to the spring SP on the arm shank 50 at both ends of the spring SP. 52c, the support piece 52d, and the first holder 54 are provided. Therefore, the length dimension L1 between the protruding piece 52c, the support piece 52d, and the first holder 54 is set to the length dimension of the spring SP. Can be shortened. As a result, the occurrence of problems such as the washer tubes 44 and 45 protruding from the arm shank 50 and rubbing against the windshield 11 is prevented. Further, since it is not necessary to apply tension to each washer tube 44, 45, it is possible to prevent each washer tube 44, 45 from coming into contact with the spring SP, and as a result, early deterioration of each washer tube 44, 45 can be reliably prevented.

  Further, according to the wiper device 10 according to the present embodiment, the protruding piece 52c, the support piece 52d, and the first holder 54 hold the respective washer tubes 44 and 45 in a non-contact state with respect to the spring SP. Therefore, the washer tubes 44 and 45 can be reliably protected from uneven wear due to rubbing or the like, and the life of the wiper device 10 can be extended.

  Furthermore, according to the wiper device 10 according to the present embodiment, the arm head 40 extends along the longitudinal direction thereof, is opened toward the windshield 11 side, and accommodates the washer tubes 44 and 45. A head side pipe accommodating portion 43 was provided. As a result, the washer tubes 44 and 45 can be prevented from being exposed to the outside even at the arm head 40 side portion from the arm shank 50 side. Therefore, the appearance of the wiper device 10 can be improved.

  Further, according to the wiper device 10 according to the present embodiment, the other end portion of the arm head 40 is provided with the pin mounting wall 42c to which the hook pin 42d that supports one end portion of the spring SP is mounted, and one end of the spring SP is provided. Protruding pieces 52c that protrude in the wiping direction of the wiper blade 20 from the side walls 52b of the arm shank 50 are provided on the part side, and the washer tubes 44 and 45 are held by the pin mounting walls 42c and the protruding pieces 52c. Thereby, by rotating the arm shank 50 with respect to the arm head 40, each washer tube 44, 45 can be easily arrange | positioned between the pin mounting wall 42c and the protrusion piece 52c. Therefore, the assemblability of the wiper device 10 is improved.

  Furthermore, according to the wiper device 10 according to the present embodiment, the support piece 52d extending in the wiping direction of the wiper blade 20 from the side wall 52a of the arm shank 50 is provided on the other end side of the spring SP. A first holder 54 to be mounted was provided. Thus, after the respective washer tubes 44 and 45 are accommodated in the shank side pipe accommodating portion 53, the first holder 54 is attached to the support piece 52d, so that the shank side pipe accommodating portion 53 of each washer tube 44 and 45 is removed. Can be surely prevented. Therefore, the assemblability of the wiper device 10 is improved.

  Further, according to the wiper device 10 according to the present embodiment, the arm shank 50 is provided between the support piece 52d and the first holder 54 on the other end side of the spring SP and the other end portion of the arm shank 50. A support piece 52k for holding the washer tubes 44 and 45 and a second holder 55 are provided. Thereby, also in the part in which the spring SP is not arrange | positioned in the shank side piping accommodating part 53, slack of each washer tubes 44 and 45 can be prevented reliably. In addition, since the second holder 55 is attached to the support piece 52k after the washer tubes 44 and 45 are accommodated in the shank side pipe accommodating portion 53, the assemblability of the wiper device 10 is improved.

  Next, Embodiment 2 of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those of the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIGS. 17A and 17B show views corresponding to FIG. 7 of the second embodiment. FIG. 17A shows a state before assembling the forward pass washer tube 44 and the return pass washer tube 45.

  As shown in FIG. 17A, in the second embodiment, the structure of the first pipe holding portion is different from that in the first embodiment. In the first embodiment, as shown in FIG. 7, the first pipe holding portion is formed by the protruding piece 52 c provided on the side wall 52 b of the arm shank 50, and the pin mounting wall 42 c provided on the protruding piece 52 c and the arm head 40. Thus, the forward pass washer tube 44 and the return pass washer tube 45 were held.

  On the other hand, the first pipe holding portion in the second embodiment is formed by a tube surrounding portion 80 having a substantially U-shaped cross section provided on one end side along the longitudinal direction of the arm shank 50, that is, on the base end side of the wiper arm 30. Is formed. The tube surrounding portion 80 includes a first extending portion 81 extending in the wiping direction of the wiper blade 20 (see FIG. 1) from the side wall 52a of the arm shank 50, and opposite to the windshield 11 side from the first extending portion 81. And a second extending portion 82 extending to the side. The tube enclosure 80 is provided integrally with the side wall 52a when the arm shank 50 is pressed.

  The second extending portion 82 is pivotally connected to one end of the arm head 40 by a support pin 42a. Here, a jig insertion hole 83 is provided in a portion of the side wall 52a facing the second extending portion 82 from the axial direction of the support pin 42a. When the wiper device 10 is assembled, a support jig (not shown) that supports the end of the support pin 42 a is inserted into the jig insertion hole 83. The jig insertion hole 83 is closed by a rubber cap RC after the wiper device 10 is assembled, as shown in FIG. Thereby, the appearance of the wiper device 10 is improved. The washer tubes 44 and 45 are inserted from the longitudinal direction of the arm shank 50 into the tube enclosure 80 when the wiper device 10 is assembled.

  Also in the wiper device 10 according to the second embodiment formed as described above, the same operational effects as those of the wiper device 10 according to the first embodiment described above can be obtained.

  Next, Embodiment 3 of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those of the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 18 is a perspective view showing the first holder of the third embodiment.

  As shown in FIG. 18, in the third embodiment, the structure of the second pipe holding portion is different from that in the first embodiment. In the first embodiment, as shown in FIG. 9, the second pipe holding portion is formed from the support piece 52d provided on the side wall 52a of the arm shank 50 and the first holder 54 attached to the support piece 52d. did.

  On the other hand, the second pipe holding portion in the third embodiment includes a pair of support pieces 90 and 91 provided in the vicinity of the other end side of the spring SP and on the side walls 52a and 52b of the arm shank 50, and A first holder (holding piece) 92 supported by these support pieces 90 and 91 is formed. The pair of support pieces 90 and 91 protrude from the side walls 52a and 52b in directions facing each other, and extend in the wiping direction of the wiper blade 20 (see FIG. 1). The pair of support pieces 90 and 91 are integrally provided on the side walls 52a and 52b when the arm shank 50 is pressed.

  The first holder 92 is formed in a substantially flat plate shape from a resin material such as plastic, and includes a main body 92 a that enters the shank side pipe housing portion 53 of the arm shank 50. And the tube by which each washer tube 44 and 45 was penetrated by the bottom wall 51 side and the side wall 52a side of the main-body part 92a under the state which supported the 1st holder 92 by each support piece 90,91. An insertion recess 92b is provided. A pair of engaging recesses 92c and 92d are provided on the side opposite to the bottom wall 51 side of the main body portion 92a to engage the tip portions of the support pieces 90 and 91, respectively.

  In order to mount the first holder 92 on each support piece 90, 91, the first holder 92 is made to face each support piece 90, 91 from the direction of the broken line arrow M3 in the drawing, and first, one engagement recess is formed. 92 c is engaged with one support piece 90. Next, the other engaging recess 92 d is engaged with the other support piece 91 such that the first holder 92 is held against the arm shank 50. Thereby, mounting | wearing with respect to each support piece 90,91 of the 1st holder 92 is completed. Contrary to the above, the other engaging recess 92d may be engaged with the other support piece 91 first.

  The wiper device 10 according to the third embodiment formed as described above can achieve the same operational effects as the wiper device 10 according to the first embodiment described above.

  Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those of the third embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIGS. 19A and 19B are perspective views showing the first holder according to the fourth embodiment.

  As shown in FIG. 19, in the fourth embodiment, the structure of the first holder (holding piece) 100 is different from that in the third embodiment. The first holder 100 according to the fourth embodiment includes a main body 101 formed in a substantially rectangular parallelepiped shape from a resin material such as plastic. A pair of support piece mounting grooves 101a and 101b into which the pair of support pieces 90 and 91 enter respectively are provided on both end sides along the longitudinal direction of the main body 101.

  Then, under the state where the first holder 100 is supported by the support pieces 90 and 91, one support piece mounting groove 101a corresponding to the one support piece 90 is formed on the tip side of the arm shank 50 (left side in the figure). The other support piece mounting groove 101b corresponding to the other support piece 91 is opened toward the base end side (right side in the figure) of the arm shank 50.

  Each support piece 90, 91 is pressed inside each of the support piece mounting grooves 101a, 101b, with the support pieces 90, 91 entering the support piece mounting grooves 101a, 101b, respectively. A retaining protrusion T (only one is shown in the figure) is provided. This prevents the first holder 100 from falling off the support pieces 90 and 91.

  Under the state where the first holder 100 is supported by the support pieces 90, 91, a protruding piece 101 c is integrally provided on the bottom wall 51 side of the main body 101. The washer tubes 44 and 45 are held together by the support surface 101d of the projecting piece 101c and the bottom surface 101e of the main body 101.

  In order to attach the first holder 100 to the support pieces 90 and 91, first, as shown in FIG. 19B, the first holder 100 is inclined with respect to the support pieces 90 and 91. Originally, it arrange | positions between each support piece 90,91. Next, the first holder 100 is rotated between the support pieces 90 and 91 in the direction of the broken line arrow R2 (clockwise direction) in the figure. Accordingly, the support pieces 90 and 91 enter the support piece mounting grooves 101a and 101b, and the mounting of the first holder 100 on the support pieces 90 and 91 is completed. Here, the retaining protrusions T provided in the support piece mounting grooves 101a and 101b are pressed against the support pieces 90 and 91, respectively, so that the first holder 100 is detached from the support pieces 90 and 91 by vibration or the like. There is no.

  Also in the wiper device 10 according to the fourth embodiment formed as described above, the same operational effects as the wiper device 10 according to the first embodiment described above can be obtained.

  Next, a fifth embodiment of the present invention will be described in detail with reference to the drawings. Note that parts having the same functions as those of the first embodiment described above are denoted by the same reference numerals, and detailed description thereof is omitted.

  FIG. 20 is a perspective view showing the first holder of the fifth embodiment.

  As shown in FIG. 20, in the fifth embodiment, the structure of the second pipe holding portion is different from that in the first embodiment. In the first embodiment, as shown in FIG. 9, the second pipe holding portion is formed from the support piece 52d provided on the side wall 52a of the arm shank 50 and the first holder 54 attached to the support piece 52d. did.

  On the other hand, the second pipe holding portion in the fifth embodiment is a support piece 110 provided in the vicinity of the other end side of the spring SP and on the side wall 52b of the arm shank 50, and a first piece supported by the support piece 110. 1 holder (holding piece) 120 is formed. And the support piece 110 protrudes toward the side wall 52a from the side wall 52b, and is extended in the wiping direction of the wiper blade 20 (refer FIG. 1). The support piece 110 is provided integrally with the side wall 52b when the arm shank 50 is pressed.

  The hook hole 52e provided in the support piece 110 is provided close to the base end side (right side in the figure) along the longitudinal direction of the arm shank 50, and on the opposite side of the support piece 110 from the hook hole 52e side, Also, a portion that is not formed is provided. The first holder 120 is attached to a portion where nothing is formed.

  The first holder 120 is formed in a substantially L shape from a resin material such as plastic, and includes a main body 121 formed in a substantially rectangular parallelepiped shape. A support piece mounting groove 121 a into which the support piece 110 enters is provided on the side wall 52 b side of the main body 121 under the state where the first holder 120 is supported by the support piece 110. The support piece 110 is attached to the support piece mounting groove 121a by press-fitting. Thereby, the first holder 120 attached to the support piece 110 does not come off due to vibration or the like generated when the wiper device 10 is operated.

  Further, under the state where the first holder 120 is supported by the support piece 110, a protruding piece 121 b protruding toward the bottom wall 51 is integrally provided on the side wall 52 b side of the main body 121. The washer tubes 44 and 45 are held together by the support surface 121c of the protruding piece 121b and the bottom surface 121d of the main body 121.

  In order to mount the first holder 120 on the support piece 110, the first holder 120 faces the support piece 110 from the direction of the broken line arrow M4 in the figure, and the support piece 110 is press-fitted into the support piece mounting groove 121a. Thereby, the support piece 110 is fixed in the support piece mounting groove 121a, and the mounting of the first holder 120 on the support piece 110 is completed.

  Also in the wiper device 10 according to the fourth embodiment formed as described above, the same operational effects as the wiper device 10 according to the first embodiment described above can be obtained.

  It goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention. For example, in each of the above embodiments, the nozzle unit 70 is provided on the arm shank 50. However, the present invention is not limited to this, and for example, the nozzle unit is provided along the longitudinal direction of the wiper blade. It doesn't matter.

  In the above embodiments, the wiper device 10 for wiping the windshield 11 on the front side of the vehicle is shown. However, the present invention is not limited to this, and the wiper for wiping the windshield on the rear side of the vehicle is used. It can also be applied to devices. Furthermore, the present invention can be applied not only to vehicles such as automobiles but also to wiper apparatuses such as railway vehicles, airplanes, and ships.

10 Wiper device 11 Wind shield (wiping surface)
20 Wiper blade 21 Blade rubber 21a Main body part 21b Lip part 21c Neck part 22 Holder member 22a Holder main body 22b Fin part 22c Vertibra 23 Connecting part 23a Connecting main body 23b Base plate 23c Cover member 23d Cylindrical pin 23e Hook fixing member 30f Fixed leg part 30 Wiper arm 40 Arm head 41 Shaft fixing portion 42 Shank mounting portion 42a Support pin 42b, 42c Pin mounting wall 42d Hook pin (pin)
43 Head side piping housing 44 Outward side washer tube (pipe)
44a Vehicle side tube 44b Nozzle side tube 45 Return side washer tube (piping)
45a Vehicle side tube 45b Nozzle side tube 46 Joint member 50 Arm shank 51 Bottom wall 52a, 52b Side wall 52c Projection piece (first pipe holding part)
52d Support piece (second pipe holding part)
52e Hooking hole 52f Mounting body 52g Engaging recess 52h Inclined wall 52k Support piece (third pipe holding part)
52m Mounting hole 52n Side portion 53 Shank side piping accommodating portion 54 First holder (second piping holding portion, holding piece)
54a Main body portion 54b Insertion hole 54c Press projection 54d Positioning convex portion 54e First tube holding portion 54f Second tube holding portion 54g Projection piece 54h Support surface 54k Side surface 54m Projection piece 54n Support surface 54p Bottom surface 55 Second holder (third pipe holding) Part)
55a Body portion 55b Claw portion 55c Sliding groove 55d Thick portion 55e Engaging projection 55f Through hole 60 Arm piece 70 Nozzle unit 71 Outward side block 71a Outward side first wall portion 71b Outward side arm portion 71c Outward side second wall portion 71d Outward side facing surface 71e Outward side nozzle cap 72 Return side block 72a Return side first wall 72b Return side arm 72c Return side second wall 72d Return side facing surface 72e Return side nozzle cap A1 Outward side first injection nozzle B1 Outward side second injection nozzle C1 Outward side third injection nozzle D1 Outward side fourth injection nozzle E1 Return side first injection nozzle F1 Return side second injection nozzle G1 Return side third injection nozzle AR Wiping range CP End cap FK Hook HL Screw hole PS Oscillating shaft R Rivet S Gap SC Fixing screw SP Spring W The forward side washer fluid (wash)
W2 Return side washer fluid (cleaning fluid)
80 Tube enclosure portion 81 First extending portion 82 Second extending portion 83 Jig insertion hole RC rubber cap 90, 91 Support piece (second pipe holding portion)
92 1st holder (2nd piping holding part, holding piece)
92a body portion 92b tube insertion recess 92c, 92d engagement recess 100 first holder 101 body portion 101a, 101b support piece mounting groove 101c protrusion piece 101d support surface 101e bottom surface T retaining protrusion 110 support piece (second pipe holding portion)
120 1st holder (2nd piping holding part, holding piece)
121 Main body 121a Supporting piece mounting groove 121b Protruding piece 121c Supporting surface 121d Bottom

Claims (7)

A wiper device comprising a wiper blade for wiping the wiping surface,
An arm head having one end mounted on the swing shaft;
An arm shank with one end attached to the other end of the arm head and the wiper blade attached to the other end;
A nozzle unit that is provided on the arm shank or the wiper blade, and sprays a cleaning liquid toward the wiping surface;
A shank side pipe housing part provided along the longitudinal direction of the arm shank and opened toward the wiping surface;
A pipe that is housed in the shank-side pipe housing section and sends the cleaning liquid to the nozzle unit;
A spring that is housed in the shank-side pipe housing portion and generates an elastic force that presses the wiper blade toward the wiping surface;
Have
In the arm shank,
On both ends of the spring, a first pipe holding part and a second pipe holding part for holding the pipes side by side in a non-contact state with respect to the springs are provided.
Wiper device. The wiper device according to claim 1 ,
The arm head, its et provided along the longitudinal direction and is open toward the wiping surface, provided the head side pipe accommodating portion for accommodating the pipe,
Wiper device. The wiper device according to claim 1 or 2 ,
A pin mounting wall on which a pin that supports one end of the spring is mounted is provided at the other end of the arm head,
Forming the first pipe holding portion on one end side of the spring by a protruding piece protruding in a wiping direction of the wiper blade from a side wall of the arm shank;
The pipe is held by the pin mounting wall and the protruding piece.
Wiper device. The wiper device according to claim 3 ,
When the arm shank is rotated in a direction opposite to the direction in which the arm shank is locked back with respect to the arm head, the size of the gap formed between the protruding piece and the pin mounting wall is determined by the piping. Larger than the diameter dimension,
Wiper device. The wiper device according to claim 1 or 2 ,
The first pipe holding portion on one end side of the spring includes a first extending portion extending in a wiping direction of the wiper blade from a side wall of the arm shank, and a wiping surface side from the first extending portion. Formed from a second extending part extending to the opposite side,
Wiper device. Met wiper apparatus according to any one of claims 1 to 5
The second pipe holding portion on the other end side of the spring is formed from a support piece extending in a wiping direction of the wiper blade from a side wall of the arm shank, and a holding piece attached to the support piece.
Wiper device. Met wiper apparatus according to any one of claims 1 to 6
The arm shank is provided with a third pipe holding part for holding the pipe between the second pipe holding part on the other end side of the spring and the other end part of the arm shank.
Wiper device.

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