JP2006298278A - Wiper arm - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wiper arm which can be easily assembled with a vehicle, can use a common arm head to standardize the arm head regardless of presence or absence of a washer nozzle. <P>SOLUTION: The wiper arm 4 comprises: an arm head 10 fixed to a pivot 3; an arm member 20 turnably connected in a wiped face approaching/separated direction with respect to a spindle 13 of the arm head 10 and to which a wiper blade 5 is engaged at its distal end; and a head cover 30 installed to the arm head 10 to cover the arm head 10. In the head cover 30, a housing part 33a detachably housing the arm head 10, and a nozzle housing part 33b housing a washer nozzle 50 spraying wash fluid to a rear glass 1a are adjacent to each other and integrally formed. A hose connection part 54 to which a hose 8 for feeding the wash fluid is connected integrally formed to the washer nozzle 50. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a wiper arm, and more particularly to a wiper arm in which a washer nozzle is integrally disposed.

In general, the arm member of the wiper arm has a distal end coupled to the wiper blade, and a proximal end coupled to an arm head fixed to the pivot shaft so as to be able to rotate in a direction in contact with and away from the glass surface. By the way, the wiper arm wiping pattern varies depending on the vehicle type, the shape and size of the glass surface, and the like. For this reason, it is necessary to manufacture the arm member having different specifications such as length in accordance with different wiping patterns. On the other hand, the arm head that rotatably connects the arm members can often be used in common even if the length of the arm members is different, and is standardized as a common part.
On the other hand, conventionally, a wiper arm in which a washer nozzle is disposed on a wiper blade or a wiper arm is known (see, for example, Patent Document 1). For example, in the wiper arm of Patent Document 1, a washer nozzle is formed on the arm member, and the wiper arm can reliably supply the cleaning liquid into the wiping pattern area with minimal influence by the traveling wind.

Japanese Patent Laying-Open No. 2004-203180 (page 9-10, FIG. 1)

  However, since the arm member is pivotally connected to the arm head, in the wiper arm of Patent Document 1, the hose for supplying the cleaning liquid from the vehicle main body to the washer nozzle has a hinge portion between the arm member and the arm head. And must be routed along the arm member. Furthermore, it is necessary to route the hose on the back side of the arm member so that the appearance is not conspicuous from the viewpoint of appearance. For this reason, after assembling the wiper arm and the wiper blade, the hose arrangement work is performed, and the workability of the hose arrangement work is not good.

  Furthermore, in the wiper arm of Patent Document 1, it is necessary to form a clamp portion for attaching the hose to the arm head for hose wiring. This clamp is not required for wiper arms that do not have a washer nozzle, so arm members and arm heads with different specifications are prepared for wiper arms that do not have washer nozzles and wiper arms that have washer nozzles. This has been a hindrance to standardization of arm heads.

  In view of the above problems, an object of the present invention is to provide a wiper arm that can be easily assembled to a vehicle, can use a common arm head regardless of the presence or absence of a washer nozzle, and can standardize the arm head. There is to do.

  According to the present invention, the above-described problem is that the arm head fixed to the pivot shaft is connected to the arm shaft so as to be pivotable in the wiping surface contacting / separating direction, and the wiper blade is locked to the tip portion. A wiper arm comprising: an arm member to be attached; and a head cover that is attached to the arm head and covers the arm head. The head cover includes a head accommodating portion that detachably accommodates the arm head, and a cleaning liquid on a wiping surface. And a nozzle accommodating portion for accommodating a washer nozzle for injecting water, and are integrally formed adjacent to each other, and the washer nozzle is integrally formed with a hose connection portion to which a hose for supplying cleaning liquid is connected. Is solved.

If a fixing member such as a nut that fixes the pivot shaft and the arm head is exposed, the fixing member may be corroded or the appearance design may be deteriorated. However, in the wiper arm of the present invention, the head cover is attached to the arm head. By attaching, the fixing part can be covered. A head housing portion formed on the head cover detachably houses the arm head.
Further, since the nozzle accommodating portion is formed adjacent to the head accommodating portion, a washer nozzle for injecting the cleaning liquid onto the wiping surface is accommodated in the nozzle accommodating portion, and the cleaning liquid is supplied to the hose connecting portion of the washer nozzle. By connecting the hose, the cleaning liquid can be sprayed from the washer nozzle of the head cover onto the wiping surface.
Further, by replacing the head cover with a normal one (a head cover for setting the arm head without setting the washer function), the wiper arm can be set not to add the washer function. In this case, a common wiper blade, arm member, and arm head can be used. Furthermore, the arm head can be used in common and standardized even if the wiper blade length and the arm member length are different as the wiping pattern varies depending on the vehicle type and the shape and size of the glass surface.

In addition, by configuring the washer nozzle separately, the shape of the head cover is simplified, so that the mold structure can be simplified and inexpensive.
Further, since the head cover can be attached and detached, it can be molded from a resin material rich in elasticity, while the nozzle body is required to have a high-precision dimension and can be molded from a resin material different from the head cover.

  The washer nozzle has a nozzle body having an injection port, a holding port for holding the nozzle body in a rollable manner, and a communication path for communicating the holding port with the hose connection portion. It is preferable that the nozzle housing portion is formed with an engaging portion that engages with the nozzle body and holds the mounting posture of the nozzle body with respect to the head cover.

  In this way, the nozzle body is movably held in the holding port communicated with the hose connection portion in the communication path, so that the nozzle body is rolled to appropriately adjust the injection port, and the injection angle. And you can set the position. Accordingly, the head cover can be used in common even if the wiper blade length and the arm member length are different due to the wiping pattern being different depending on the vehicle type and the shape and size of the glass surface.

  An arm head fixed to the pivot shaft; an arm member connected to the support shaft of the arm head so as to be rotatable in the wiping surface contact and separation direction; and a wiper blade locked to a tip portion; A wiper arm that is attached to the head and covers the arm head, and the head cover includes a head accommodating portion that detachably accommodates the arm head, and a nozzle portion that sprays cleaning liquid onto the wiping surface. The nozzle portion may be integrally formed, and the nozzle portion may be integrally formed with a hose connection portion to which a hose for supplying a cleaning liquid is connected.

Even if comprised in this way, an arm head can be accommodated detachably by the head accommodating part formed in the head cover. Furthermore, since the nozzle part for injecting the cleaning liquid onto the wiping surface is formed adjacent to the head housing part, by connecting the hose that supplies the cleaning liquid to the hose connection part of the nozzle part, the nozzle part of the head cover The cleaning liquid can be sprayed onto the wiping surface.
Further, by replacing the head cover with a normal one, it is possible to set so that the washer function is not added to the wiper arm. In this case, a common wiper blade, arm member, and arm head can be used. Furthermore, the arm head can be used in common and standardized even if the wiper blade length and the arm member length are different as the wiping pattern varies depending on the vehicle type and the shape and size of the glass surface.

The nozzle portion includes a nozzle body in which an injection port is formed, a holding port that holds the nozzle body in a rollable manner, and a communication path that communicates the holding port with the hose connection portion. can do.
In this way, the nozzle body is movably held in the holding port communicated with the hose connection portion in the communication path, so that the nozzle body is rolled to appropriately adjust the injection port, and the injection angle. And you can set the position. Accordingly, the head cover can be used in common even if the wiper blade length and the arm member length are different due to the difference in the wiping pattern depending on the type of vehicle and the shape and size of the glass surface.

  In the head cover, it is preferable that the nozzle portion or the nozzle housing portion is formed on the wiping progress direction side at the wiper arm stop position with respect to the head housing portion. If comprised in this way, prior to wiping with a wiper blade, cleaning fluid can be sprayed just before a wiper blade. For this reason, the fall of the driving | operation visual field (or rear driving | operation visual field) until the blade wiping by washing | cleaning liquid landing can be suppressed in a short time.

  According to the wiper arm of the present invention, since the nozzle for injecting the cleaning liquid on the wiping surface is arranged on the head cover that covers the arm head, the assembly to the vehicle is facilitated, and the common arm head can be used regardless of the presence or absence of the nozzle. It can be used and the arm head can be standardized.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In addition, the members, arrangements, and the like described below do not limit the present invention, and it is needless to say that various modifications can be made in accordance with the spirit of the present invention.
1 to 7 relate to one embodiment of the present invention, FIG. 1 is a perspective view of a wiper arm, FIG. 2 is a sectional view of the wiper arm, FIG. 3 is an exploded perspective view with a head cover removed from the wiper arm, FIG. FIG. 5 is a sectional view of the head cover, FIG. 5 is a sectional view of the head cover, FIG. 6 is a diagram of a washer nozzle, and FIG. 7 is a diagram of the operation of the wiper device.
8 to 10 relate to another embodiment of the present invention, FIG. 8 is an explanatory side view and a sectional explanatory view of a head cover, and FIGS. 9 and 10 are explanatory views in the case of a wiper arm having no washer function. It is.

Below, the example which applied this invention to the wiper arm of the rear wiper apparatus mounted in a vehicle is shown. The wiper arm of the present invention can be applied not only to the rear window of the vehicle but also to other wiping surfaces in general.
1 is a perspective view of the wiper arm, FIG. 2 is a cross-sectional explanatory view of the wiper arm, and FIG. 3 is a perspective view showing a state in which the head cover is removed from the arm head.
The rear wiper device W of this example includes a rear wiper motor 6 that is a drive source assembled to the vehicle main body 1, a pivot shaft 3 that rotates at a reduced speed around an axis when the rear wiper motor 6 is driven, and a tip portion of the pivot shaft 3. The wiper arm 4 that is fixed to the rear glass 1a and performs a reciprocating wiping motion along the rear glass 1a, and the wiper blade 5 that is connected to the tip of the wiper arm 4 and wipes the rear glass 1a are main components.
The wiper blade 5 of this example has a tournament type holding structure, and a long and rubber blade rubber 5c is held by holding claws 5b formed at the ends of a plurality of levers 5a. .

  The wiper arm 4 in this example is made of resin, and is connected to an arm head 10 fixed to the pivot shaft 3 and a support shaft 13 of the arm head 10 so as to be rotatable in the wiping surface contacting / separating direction, and at the distal end thereof. The blade 5 is hingedly connected to the arm member 20, and the arm member 20 is engaged with the arm member 20 and the arm head 10 so that the wiper blade 5 is pressed against the rear glass 1a in a wiping posture. The main components are a spring 40 as a pressing means for applying a pressing force to the head and a head cover 30 that is detachably attached to the arm head 10 and covers the arm head 10.

Further, in the wiper arm 4 of this example, a later-described washer nozzle 50 is disposed on the head cover 30, and cleaning liquid is supplied to the washer nozzle 50 from the washer pump device 7 assembled to the vehicle body 1 through the hose 8. ing. In the rear wiper device W of this example, when the wiper arm 4 is reciprocated, the cleaning liquid can be sprayed from the washer nozzle 50 to the rear glass 1a in conjunction with the reciprocating drive.
Further, the rear wiper device W of this example forms a design and texture with a sense of unity as a whole by forming the arm head 10, the arm member 20, the head cover 30 and the lever 5a of the wiper blade 5 from a resin material. .

The arm head 10 of this example is extended to the distal end side (arm member 20 side) in a bifurcated form from both sides in the width direction of the proximal end portion 11 as a pivot shaft attaching portion attached to the pivot shaft 3. A pair of arm member mounting legs 12 and a support shaft 13 spanned so as to connect both arm member mounting legs 12.
The arm head 10 is attached to the vehicle body 1 side by inserting the distal end portion of the pivot shaft 3 into the proximal end portion 11 and fastening and fixing it with a fastening nut 3a. The pair of arm member mounting legs 12 are formed so as to face each other with a predetermined distance in the width direction of the arm head 10, and the support shaft 13 is provided so as to be substantially orthogonal to the pivot shaft 3.

The pair of arm member mounting legs 12 includes a pedestal having a pin-like spring locking portion 14 between the support shaft 13 and the base end portion 11 and below the support shaft 13 (wiping surface side). The part 15 is integrally formed.
Furthermore, a shaft support hole 12a is provided in the vicinity of the upper end portion on the arm member 20 side on the outer surface of each arm member mounting leg portion 12. The support shaft holes 12a are for rotatably holding a pair of coaxial support shafts 30a protruding inward from the inner surface of the head cover 30. By supporting the support shaft 30a in the shaft support hole 12a, the head cover 30 can be opened and closed around the support shaft 30a with respect to the arm head 10.

Further, a notch 12b is formed at the lower end of each arm member mounting leg 12 on the base end 11 side. The head cover 30 is mounted in a state of covering the arm head 10 by the engagement protrusion 30b protruding inward from the inner surface of the head cover 30 elastically engaging with the notch 12b.
In this example, the head cover 30 is attached to the arm head 10 so as to be rotatable. However, the present invention is not limited to this, and the head cover 30 and the arm head 10 are formed with engaging portions, and the head cover 30 is engaged and disengaged. The arm head 10 may be detachably attached.

  In the present invention, the fact that the head cover can be attached to and detached from the arm head includes not only the head cover that is completely removed from the arm head, but also those that can be opened and closed while being connected to the arm head as in this example. It is. However, the head cover 30 of this example can be easily removed from the arm head 10 by disengaging the engagement protrusion 30b from the notch 12b and removing the support shaft 30a from the shaft support hole 12a.

A long arm member 20 is connected to the distal end portion of the arm head 10 via a support shaft 13. The arm member 20 includes an arm member main body 21 that is formed in a substantially U-shaped cross section with an open bottom surface side, and a protrusion 22 that extends from the arm member main body 21 in the longitudinal direction. The protrusion 22 is narrower than the arm member main body 21, and a stepped portion (stepped surface) 23 is formed at the boundary portion thereof.
The protrusion 22 is formed with a substantially U-shaped attachment recess 22a through which the support shaft 13 can be inserted. Further, a substantially U-shaped spring locking portion 24 is integrally formed on the distal end side of the arm member 20.
The spring 40 of this example includes a coil portion 41 and hook-shaped locking portions 42 and 43 formed at both ends of the coil portion 41.

  The arm member 20 is rotatably attached to the arm head 10 with the protruding portion 22 inserted between the pair of arm member mounting legs 12 from the distal end side and the support shaft 13 being inserted into the mounting recess 22a. ing. That is, the arm member 20 is connected to the arm head 10 so as to be rotatable about the support shaft 13 in the wiping surface contact direction (arrow A direction in FIG. 2). The spring 40 is disposed so that the locking portions 42 and 43 are hooked on the spring locking portion 24 of the arm member 20 and the spring locking portion 14 of the arm head 10, respectively.

  FIG. 2 shows a state in which the arm member 20 is held at the wiping posture position where the wiper blade 5 connected to the tip portion is in contact with the surface of the rear glass 1a. In this wiping posture, the line connecting the spring locking portions 14 and 24 (that is, the point of action of the urging force of the spring 40) is positioned on the lower side with respect to the support shaft 13, so the support shaft 13 is moved by the spring 40. Due to the tensile force applied between the arm member 20 and the arm head 10 through the arm member 20, a pressing force to the rear glass 1 a surface side is applied to the arm member 20.

  The head cover 30 of this example will be described with reference to FIGS. FIG. 5 is a cross-sectional view of the head cover 30 corresponding to a cross section taken along line BB in FIG. The head cover 30 of this example includes an upper wall portion 31 that covers the upper side of the arm head 10, and side wall portions 32 a and 32 b that extend from the upper wall portion 31 and cover the side portions of the arm head 10 (excluding the side portions on the distal end side). A side wall portion 32c that is continuous with the upper wall portion 31 and forms a predetermined space between the side wall portion 32b, and a base end portion 11 of the arm head 10 that is continuous with the upper wall portion 31, the side wall portion 32a, and the side wall portion 32c. And a side wall portion 32d covering the rear side surface. The upper wall portion 31 is formed with a substantially U-shaped cutout portion 31 a whose front end side (arm member 20 side) is opened corresponding to the protruding portion 22.

With such a configuration, the head cover 30 of this example is formed with a head accommodating portion (head accommodating region) 33a surrounded by the upper wall portion 31 and the side wall portions 32a, 32b, and 32d. The arm head 10 is detachably accommodated in the head accommodating portion 33a. That is, the above-described support shaft 30a and the engagement protrusion 30b are formed so as to protrude from the inner surface side of the side wall portions 32a and 32b, and the arm head 10 is accommodated in the head accommodating portion 33a by these engagements. It becomes.
The head cover 30 of this example is formed to be rotatable around a support shaft 30a formed on the front end side. However, the present invention is not limited to this, and a support shaft is provided on the rear end side so that the arm member 20 stands up. It may be configured to be able to open.

  Further, in the head cover 30 of this example, a nozzle accommodating portion (nozzle accommodating region) 33b surrounded by the upper wall portion 31 and the side wall portions 32b, 32c, 32d is formed adjacent to the head accommodating portion 33a. The nozzle housing portion 33b houses a washer nozzle 50 for injecting cleaning liquid onto the rear glass 1a. Engaging portions 34 and 35 for attaching the washer nozzle 50 are formed on the surfaces of the side wall portions 32b and 32c facing each other. A plurality of engaging portions 34 and 35 in this example are formed so as to protrude into the nozzle accommodating portion 33b. The engaging portions 34 and 35 are elastically engaged with the washer nozzle 50 and maintain the mounting posture with respect to the head cover 30.

  As the washer nozzle 50 is inserted into the nozzle accommodating portion 33b, the washer nozzle 50 and the engaging portion 34 come into contact with each other, and the side wall portions 32b and 32c expand elastically in a direction away from each other. When the washer nozzle 50 comes into contact with the upper wall surface 33c of the nozzle accommodating portion 33b, the side wall portions 32b and 32c return to their original shapes. At this time, the engaging portion 34 engages with the lower portion of the washer nozzle 50, and the washer nozzle 50 is held so as not to move in the vertical direction. At this time, the engaging portion 35 contacts the front and rear end portions of the washer nozzle 50, and the washer nozzle 50 is held so as not to move in the front-rear direction. As described above, in this example, the washer nozzle 50 is elastically locked, so that the washer nozzle 50 does not rattle within the nozzle housing portion 33b, and the washer nozzle 50 can be reliably maintained in an appropriate ejection posture. it can.

  In this example, a gap is formed between the rear end portion of the side wall portion 32b and the inner peripheral surface of the side wall portion 32d. However, the present invention is not limited to this, and the side wall portion 32b further extends toward the side wall portion 32d. You may take out and continue with 32 d of side wall parts.

As shown in FIG. 6, the washer nozzle 50 of this example includes a nozzle body (jet) 51 having an injection port 51 a and a resin nozzle body 52 that holds the nozzle body 51.
The nozzle body 51 is formed by forming a through hole in a metal hard sphere having a predetermined size to form an injection port 51a.
The nozzle body 52 includes a body main body 53 and a hose connection portion 54 that is formed to protrude from the body main body 53. The body main body 53 has an injection opening 53 a for injecting the cleaning liquid to the outside, a holding port 53 b that is a substantially spherical recess formed continuously to the injection opening 53 a, and an inlet 54 a of the holding port 53 b and the hose connection part 54. A communication path 53c that communicates with each other is formed.

The ejection opening 53a is formed to expand from the holding port 53b side toward the outside. The holding port 53b is for fitting and holding the nozzle body 51, and can be disposed in the holding port 53b by press-fitting the nozzle body 51 from the ejection opening 53a side. The nozzle body 51 can roll in the holding port 53b and can adjust the injection direction.
The wiping pattern varies depending on the type of vehicle, the shape and size of the glass surface, and the lengths of the wiper blade and the arm member are set according to this. The head cover 30 of this example can set an injection angle and an injection position by rolling the nozzle body 51, and can be commonly used for wiper arms having different specifications. Moreover, since the shape of the head cover 30 can be set regardless of the wiping pattern, the degree of design freedom in design is improved.

  The hose connection portion 54 is connected to the end portion of the cleaning liquid supply hose 8 routed from the washer pump device 7 of the vehicle body 1. The hose 8 is pulled out of the vehicle through an opening hole 1b for projecting the pivot shaft 3 to the outside of the vehicle body, and is connected to a hose connection portion 54 of a washer nozzle 50 disposed in the nozzle housing portion 33b (see FIG. 1). ).

  As described above, the wiper arm 4 of the present example has a configuration in which the washer nozzle 50 is disposed in the head cover 30, and therefore the end portion of the hose 8 drawn out from the vehicle body 1 can be connected to the hose connection portion 54 as it is. Thereby, it is not necessary to provide the arm head 10 or the arm member 20 with a fixing portion for hose wiring. Therefore, the arm head 10 and the arm member 20 can be used as common parts for the wiper arm not provided with the washer nozzle 50 and the wiper arm 4 of the present example, and the parts can be standardized. In particular, the arm head 10 can be used in common even if the length of the wiper blade 5 and the length of the arm member 20 are different due to different wiping patterns due to differences in vehicle type, glass surface shape and size, and the like. it can.

In this example, since a separate washer nozzle 50 is mounted on the head cover 30, the mold structure for forming the head cover 30 can be simple and inexpensive.
In addition, since the head cover 30 can be attached to and detached from the arm head 10 by being separated, the head cover 30 can be formed of a resin material rich in elasticity. On the other hand, the nozzle body 52 is required to have high-precision dimensions. It can be molded from a resin material different from 30.

In the wiper arm 4 of this example, the arm head 10 and the arm member 20 with the head cover 30 attached to the pivot shaft 3 are assembled, and the end of the hose 8 drawn out from the opening hole 1b is connected to the hose connection 54 of the washer nozzle 50. By doing so, it can be assembled to the vehicle body 1. Thus, the wiper arm 4 of this example has extremely good assembly properties.
Further, the wiper arm 4 of this example can use conventional arm members 20 and wiper blades 5 and has a simple configuration without increasing the number of parts compared to a conventional wiper arm with a washer nozzle. Functions can be added.

  When the head cover 30 is attached to the arm head 10, as shown in FIG. 1, the arm member 20 and the head cover 30 are configured to be flush with each other in a wiping posture. In addition, by forming the arm member 20, the head cover 30, and the lever 5a of the wiper blade 5 from a resin material as described above, the whole can have the same texture and a unified design.

Next, the operation of the rear wiper device W of this example will be described based on FIG.
FIG. 7 shows a state where the wiper arm 4 is at the stop position P. When the rear wiper device W starts to operate, the rear wiper motor 6 is driven and the pivot shaft 3 rotates. Thereby, the wiper arm 4 connected to the pivot shaft 3 performs a reciprocating wiping operation. By this reciprocating wiping operation, the wiper arm 4 reciprocally wipes the fan-shaped wiping region C between the stop position P and the reverse position Q.

When a rear washer switch (not shown) is turned on, the washer pump device 7 is operated and the cleaning liquid is pumped to the washer nozzle 50 via the hose 8. Accordingly, the cleaning liquid is ejected from the washer nozzle 50 in the direction of arrow D. Further, when the wiper arm 4 is wiped in conjunction with the ON operation of a rear washer switch (not shown), the wiper arm 4 automatically (at the same time as the wiper switch 4 is ejected) at the same time as or after the cleaning liquid is ejected from the washer nozzle 50 It is set to wipe (without operation).
In the wiper arm 4 of this example, the nozzle accommodating portion 33b is formed on the wiping progress direction side at the stop position of the wiper arm 4 with respect to the head accommodating portion 33a. That is, the washer nozzle 50 is disposed on the reverse position Q side of the head cover 30.
Therefore, prior to wiping the rear glass 1 a by the wiper blade 5, the cleaning liquid can be ejected from the washer nozzle 50 immediately before the wiper blade 5 travels. Thereby, it is possible to suppress a decrease in the driving field of view (in this example, the backward driving field of view) from the landing of the cleaning liquid to the wiping by the wiper blade 5 in a very short time.

The wiper arm 4 of this example may be modified as follows. In addition, about the component substantially the same as the said embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.
In the above embodiment, the separate washer nozzle 50 is disposed in the nozzle accommodating portion 33b formed in the head cover 30, but the configuration is not limited to this, and a configuration as shown in FIG. That is, the head cover 30 in the example of FIG. 8 is formed with a head accommodating portion 33a similar to the above embodiment, but the rear glass 1a is adjacent to the head accommodating portion 33a and between the side wall portion 32b and the side wall portion 32c. The nozzle portion 60 for injecting the cleaning liquid is integrally formed.

The nozzle part 60 of this example is formed of a nozzle body 51 and a nozzle part body 62 that holds the nozzle body 51. The nozzle body 62 is formed with an injection opening 63a, a holding port 63b, a communication path 63c, and a hose connection part 64 similar to those in the above embodiment. In this example, the hose connection portion 64 is formed so as to protrude downward, and the end portion of the hose 8 drawn out of the vehicle is connected.
In this example, the communication path 63 c is formed from the holding port 63 b toward the opposite side of the injection opening 63 a, is bent downward in the middle, and communicates with the inflow port 64 a of the hose connection part 64.

  Thus, in this example, since the nozzle part 60 was integrally formed with the head cover 30, the nozzle part 60 itself is not rattled or dropped off, which is preferable. Moreover, the number of parts can be reduced by integral molding.

  Further, the head cover 30 can be used even when the washer function is not set to the wiper arm. In this case, as shown in FIG. 9A, the lid body 70 may be press-fitted into the ejection opening 53a and the holding port 53b to close the ejection opening 53a. Further, as shown in FIG. 9B, it is preferable to press-fit a lid 70 matching the shape of the ejection opening 63a and the holding port 63b into the ejection opening 63a and the holding port 63b so as to block the ejection opening 63a. In this way, the external appearance of the washer nozzle 50 and the nozzle part 60 is flush with each other, and it can be easily determined that the washer function is not provided.

  Further, when the washer function is not set to the wiper arm, the head cover 80 can be used without covering the arm head without setting the washer function as shown in FIG. 10 without using the head cover 30. As with the head cover 30, the head cover 80 has a support shaft 30 a and an engaging protrusion 30 b formed on the inner surface. By engaging these with the shaft support hole 12a and the notch 12b of the arm head 10, the head cover 80 can be mounted on the arm head 10 so as to be opened and closed.

  Moreover, in the said embodiment, although the hose connection parts 54 and 64 were integrally formed in the washer nozzle 50 and the nozzle part 60, respectively, it is good also as a structure which connects not only this but a separate hose connection part.

  In the above embodiment, the wiper arm 4 is made of resin. However, it is possible to form a thermoplastic resin in which a glass fiber is homogeneously mixed in a polyethylene terephthalate resin, so that strength, rigidity, low moisture absorption, moldability, and weather resistance are formed. It is preferable in terms of properties and the like.

It is a perspective view of the wiper arm concerning one embodiment of the present invention. It is a section explanatory view of a wiper arm. It is the disassembled perspective view which removed the head cover from the wiper arm. It is side surface explanatory drawing and a cross-sectional explanatory drawing of a head cover. It is a section explanatory view of a head cover. It is explanatory drawing of a washer nozzle. It is operation | movement explanatory drawing of a wiper apparatus. It is side surface explanatory drawing and cross-sectional explanatory drawing of the head cover which concerns on other embodiment of this invention. It is explanatory drawing in the case of setting it as the wiper arm which does not have a washer function based on other embodiment of this invention. It is explanatory drawing in the case of setting it as the wiper arm which does not have a washer function based on other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Vehicle body, 1a ... Rear glass, 1b ... Opening hole, 3 ... Pivot shaft,
3a ... fastening nut, 4 ... wiper arm, 5 ... wiper blade, 6 ... rear wiper motor,
7. Washer pump device, 8 hose, 10 arm head, 11 base end,
12 ... Arm member mounting leg, 12a ... Shaft support hole, 12b ... Notch, 13 ... Support shaft,
20... Arm member, 21... Arm member body, 22... Projection, 30.
30a ... support shaft, 30b ... engagement protrusion, 31 ... upper wall, 31a ... notch,
32a, 32b, 32c, 32d... Side wall, 33a.
33b ··· Nozzle housing portion, 34, 35 ··· engaging portion, 40 ··· spring,
50 ... Washer nozzle, 51 ... Nozzle body, 51a ... Injection port, 52 ... Nozzle body,
53 Body body 53a Injection opening 53b Holding port 53c Communication path
54 ... hose connection part, 54a ... inlet, 60 ... nozzle part, 62 ... nozzle part body,
63a ... injection opening, 63b ... holding port, 63c ... communication path, 64 ... hose connection part,
64a, inflow port, 70, lid, 80, head cover, C, wiping area, P, stop position,
Q: Reverse position, W: Rear wiper device

Claims (5)

An arm head fixed to the pivot shaft;
An arm member that is rotatably connected to the wiping surface contacting / separating direction with respect to the support shaft of the arm head, and the wiper blade is locked to the tip portion;
In a wiper arm comprising a head cover attached to the arm head and covering the arm head,
In the head cover, a head accommodating portion that detachably accommodates the arm head and a nozzle accommodating portion that accommodates a washer nozzle for injecting a cleaning liquid onto the wiping surface are integrally formed adjacently,
The wiper arm, wherein the washer nozzle is integrally formed with a hose connection portion to which a hose for supplying a cleaning liquid is connected. The washer nozzle includes a nozzle body having an injection port, a holding port for holding the nozzle body so as to be capable of rolling, and a nozzle body having a communication path for communicating the holding port and the hose connection portion. And
2. The wiper arm according to claim 1, wherein the nozzle accommodating portion is formed with an engaging portion that engages with the nozzle body and maintains a mounting posture of the nozzle body with respect to the head cover. An arm head fixed to the pivot shaft;
An arm member that is rotatably connected to the wiping surface contacting / separating direction with respect to the support shaft of the arm head, and the wiper blade is locked to the tip portion;
In a wiper arm comprising a head cover attached to the arm head and covering the arm head,
In the head cover, a head accommodating portion that detachably accommodates the arm head and a nozzle portion for injecting the cleaning liquid onto the wiping surface are integrally formed adjacent to each other,
The wiper arm according to claim 1, wherein a hose connection portion to which a hose for supplying a cleaning liquid is connected is formed integrally with the nozzle portion.   The nozzle portion includes a nozzle body in which an injection port is formed, a holding port that holds the nozzle body in a rollable manner, and a communication path that connects the holding port and the hose connection portion. The wiper arm according to claim 3.   The said head cover has the said nozzle part or the said nozzle accommodating part formed in the wiping progress direction side in the stop position of the said wiper arm with respect to the said head accommodating part, The any one of Claims 1-4 characterized by the above-mentioned. The wiper arm described.

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