JP6447115B2 - Washer nozzle - Google Patents

Description

  The present invention relates to a washer nozzle for injecting a cleaning liquid.

  Conventionally, a vehicle has been provided with a washer nozzle for injecting a cleaning liquid. As the washer nozzle, for example, a nozzle body having an inflow passage and a tip receiving portion that communicates with the inflow passage and opens to the outside, and is press-fitted and held in the tip receiving portion, and flows in through the inflow passage. There is one provided with a nozzle tip for injecting the cleaning liquid to the injection port and injecting the cleaning liquid to the outside (see, for example, Patent Document 1).

Special Table 2002-523295

  By the way, the washer nozzle as described above is manufactured by controlling the dimensions of the four surfaces of the tip receiving portion and the four surfaces of the nozzle tip with high accuracy so that there are no gaps between the nozzle tip and the tip receiving portion. Otherwise, the cleaning liquid may enter the gap, and the cleaning liquid may leak to the outside from other than the injection port.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a washer nozzle that can suppress a cleaning liquid from leaking outside from an injection port with a simple configuration. It is in.

A washer nozzle that solves the above problems includes an inflow passage, a nozzle body that has an inflow opening that communicates with the inflow passage and is open to the outside, and an external opening formed inside the tip housing. A washer nozzle including a nozzle tip having an injection port for injecting the cleaning liquid that has been press-fitted from the nozzle and received in the tip storage portion, and flows in through the inflow passage. The nozzle tip communicates with the inflow passage. and opening the chip opening to pass, the a guide hole for guiding the cleaning liquid to said injection port in communication with the tip opening, is convexly formed in a surface where the tip opening is formed with surrounding the tip opening Te, and a said inlet seal protrusion opening is pressed against the formed surface of the chip housing portion in accommodating state of the chip accommodation portion, wherein the injection port is, In the receiving state to the chip containing portion of the serial nozzle tip, which is exposed to the outside from the external opening.

  According to this configuration, the nozzle tip has the tip opening that is open to communicate with the inflow passage, and the guide hole that communicates with the tip opening and guides the cleaning liquid to the injection port. It is guided to the injection port through the tip opening of the nozzle tip and the guide hole. Since the nozzle tip has a projecting convex portion surrounding the chip opening portion on the surface where the chip opening portion is formed, and has a sealing convex portion that is pressed against the surface where the inflow opening portion is formed in the chip accommodating portion. When the nozzle tip is press-fitted from the external opening and accommodated in the chip accommodating portion, the cleaning liquid can be prevented from leaking from the periphery of the chip opening to the gap between the nozzle tip and the chip accommodating portion by the seal convex portion. Therefore, it is possible to prevent the cleaning liquid from leaking outside from the injection port with a simple configuration in which the seal projection is formed on one surface where the chip opening is formed.

  In the washer nozzle, it is preferable that a direction from the inside of the inflow passage toward the inflow opening is different from a direction from the inside of the chip housing portion toward the external opening.

  According to this configuration, the direction from the inside of the inflow passage toward the inflow opening and the direction from the inside of the chip housing portion toward the external opening (that is, the direction in which the nozzle tip comes out of the chip housing portion) are different. Therefore, it is possible to prevent the nozzle tip from coming out of the tip accommodating portion due to the force of the cleaning liquid flowing into the nozzle tip via the inflow passage.

  In the washer nozzle of the present invention, it is possible to suppress the cleaning liquid from leaking outside from the injection port with a simple configuration.

The schematic diagram for demonstrating the wiper for vehicles in one Embodiment, and its operation | movement. The perspective view of the front end side of a retainer and a front end side washer nozzle in one Embodiment. The bottom view of the front end side of the retainer and front end side washer nozzle in one Embodiment. The perspective view of the front end side of the retainer in one Embodiment. The perspective view of the front end side washer nozzle in one Embodiment. The front view of the front end side washer nozzle in one Embodiment. The perspective view of the nozzle body in one embodiment. The sectional end elevation of the tip side washer nozzle in one embodiment. The perspective view of the nozzle tip in one Embodiment. 1 is a side view of a nozzle chip in one embodiment. FIG.

Hereinafter, an embodiment of a vehicle wiper will be described with reference to FIGS.
As shown in FIG. 1, the vehicle wiper 1 is for wiping a wiping surface Ga that is a surface outside the passenger compartment of a window glass G of a vehicle, and includes a driver's seat side (left side in FIG. 1) and an assistant. It is provided on the seat side (right side in FIG. 1).

The vehicle wiper 1 includes a wiper arm 2 and a wiper blade 3 connected to the wiper arm 2.
The wiper arm 2 is fixed to a pivot shaft (not shown) that is reciprocally rotated by a driving force of a motor (not shown), a long arm head 5 that rotates integrally with the pivot shaft, and a longitudinal tip of the arm head 5 And a long retainer 6 that is pivotally connected to the center of the shaft along the width direction and whose front end is urged toward the wiping surface Ga by an urging mechanism (not shown). A wiper blade 3 for wiping the wiping surface Ga is connected to the longitudinal end portion of the retainer 6.

As shown in FIGS. 2 to 4, the retainer 6 has a substantially U-shaped cross section in the longitudinal orthogonal direction, and is formed in a long shape with the lower side (back side) facing the wiping surface Ga opened. Has been.
As shown in FIG. 1, the vehicle wiper 1 includes an intermediate washer nozzle 8 for injecting the cleaning liquid onto the wiping surface Ga inside the longitudinal intermediate portion of the retainer 6. The intermediate washer nozzle 8 is disposed on the backward movement direction side (downward side and home position side) of the vehicle wiper 1 with respect to the wiper blade 3 when mounted on the vehicle. In this case, the cleaning liquid is supplied during the backward movement, and the supplied cleaning liquid is sprayed to the backward movement direction area Z1 of the wiping surface Ga.

  Further, the vehicle wiper 1 includes a front end washer nozzle 9 as a washer nozzle for injecting the cleaning liquid onto the wiping surface Ga outside the longitudinal end side (hereinafter simply referred to as the front end side) of the retainer 6. . The front end washer nozzle 9 is mounted on the vehicle and is closer to the forward direction of the vehicle wiper 1 than the wiper blade 3 (upper side, the wiping end side, that is, the side opposite to the intermediate washer nozzle 8). The cleaning liquid is fed mainly during the forward movement of the vehicle wiper 1, and is used to inject the fed cleaning liquid to the forward movement direction area Z2 of the wiping surface Ga.

  Specifically, as shown in FIGS. 1, 3 and 4, the retainer 6 has a crank-shaped bent portion so that the distal end side thereof is substantially parallel to the proximal end side and is shifted to the forward direction side. 6a, and a blade connecting portion 6b for connecting the wiper blade 3 is formed at the tip portion on the tip side.

  Further, as shown in FIG. 4, a nozzle mounting hole 6d is formed in one side wall 6c (on the forward movement side) slightly on the proximal end side of the blade connecting portion 6b on the distal end side of the retainer 6. . The nozzle mounting hole 6d of the present embodiment is formed in a substantially rectangular shape that is long along the longitudinal direction of the retainer 6, and has an upper and lower cutout portion 6e that extends in the vertical direction from the middle portion in the longitudinal direction. As shown in FIG. 3, a pair of nozzle support holes 6g are formed in the other side wall 6f at a position facing the nozzle mounting hole 6d.

  Further, as shown in FIG. 4, in the retainer 6, a notch portion 6h for the inflow cylinder portion that is notched from the bent portion 6a side to the distal end side is formed slightly on the proximal end side of the nozzle mounting hole 6d. ing.

  On the other hand, as shown in FIGS. 3, 5, and 6, the distal-side washer nozzle 9 includes a nozzle body 11 that forms an appearance, and a nozzle tip 12 that is housed and held in the nozzle body 11.

  The nozzle body 11 includes a body portion 11a, a fixing portion 11b protruding from a middle portion of the body portion 11a in the longitudinal direction (left and right direction in FIG. 6), and a longitudinal base end side (right side in FIG. 6) of the body portion 11a. ) To the fixing portion 11b, and an inflow cylinder portion 11c protruding obliquely in a direction away from the fixing portion 11b.

  The fixing portion 11b has an engaging claw 11d that extends obliquely toward the base end side, bends toward the base end side obliquely, and further extends to the base end side on both sides thereof. The portion 11b is inserted into the nozzle mounting hole 6d (see FIG. 4) of the retainer 6, and the engaging claw 11d engages with the nozzle mounting hole 6d to be fixed to the retainer 6. Further, on the base end side of the fixed portion 11b, an upper and lower convex portion 11e that fits into the upper and lower cutout portion 6e of the nozzle mounting hole 6d is formed, and the upper and lower convex portion 11e fits into the upper and lower cutout portion 6e, so that the nozzle Shaking of the main body 11 with respect to the retainer 6 is suppressed. In addition, a pair of support convex portions 11f that fits in the pair of nozzle support holes 6g (see FIG. 3) is formed at the distal end portion of the fixed portion 11b, and the support convex portions 11f fit into the nozzle support holes 6g. The rattling of the nozzle body 11 with respect to the retainer 6 is further suppressed. In addition, when the support convex part 11f fits into the nozzle support hole 6g, one side wall 6c of the retainer 6 and the other side wall 6f are connected by the nozzle body 11 (fixed part 11b), and the strength of the retainer 6 is increased. Is also improved. Further, as shown in FIG. 3, in a state where the nozzle body 11 is fixed to the retainer 6, the inflow tube portion 11c passes through the inflow tube portion notch portion 6h (see FIG. 4) and enters the interior of the retainer 6. Be placed.

As shown in FIG. 8, the inflow tube portion 11 c has an inflow passage 11 g formed therein, and a hose 13 (see FIG. 3) routed inside the retainer 6 is connected to the tip thereof.
As shown in FIGS. 7 and 8, the main body 11a has a chip accommodating portion 11j that is open to the outside while an inflow opening 11h communicating with the inflow passage 11g is formed. The tip accommodating portion 11j is formed in a shape capable of press-fitting a substantially rectangular parallelepiped nozzle tip 12 from the external opening portion 11k opened to the outside. Further, the external opening 11k of the chip accommodating portion 11j opens downward, that is, toward the wiping surface Ga (see FIG. 1), and opens in the opening direction of the inflow opening 11h, more specifically from the inside of the inflow passage 11g. The direction toward the portion 11h and the opening direction of the external opening portion 11k, more specifically, the direction from the inside of the chip housing portion 11j toward the external opening portion 11k are set in different directions.

  Further, the main body portion 11a of the present embodiment is formed with a main body guide hole 11m that penetrates the inner surface of the chip accommodating portion 11j from the surface in the distal direction of the retainer 6 to the outside. The opening is one injection port 11n.

  As shown in FIGS. 5 and 8 to 10, the nozzle tip 12 is formed in a substantially rectangular parallelepiped shape, and is press-fitted from the external opening 11k of the tip accommodating portion 11j and is accommodated in the tip accommodating portion 11j. The cleaning liquid that has flowed in through 11g is guided to the injection port 11n of the nozzle body 11 and the injection ports 12a and 12b formed on the nozzle body 11 and is sprayed to the outside.

  Specifically, the nozzle tip 12 is in communication with the inflow passage 11g (inflow opening portion 11h) (to the inflow passage 11g side) and is opened to the tip opening portion 12c. It has an opening 11n and guide holes 12d to 12f for guiding to the injection ports 12a and 12b formed in itself. The tip opening 12 c is an opening of a passage groove 12 g that is recessed from the surface (one surface) of the nozzle tip 12 on the inflow passage 11 g (inflow opening 11 h) side, and is large along the longitudinal direction of the nozzle tip 12. It is open. The guide hole 12d penetrates from the inner surface of the passage groove 12g toward the injection port 11n (main body guide hole 11m) (see FIG. 8). The guide holes 12e and 12f are juxtaposed in the longitudinal direction of the nozzle tip 12 and penetrate downward from the inner surface of the passage groove 12g, that is, toward the wiping surface Ga. 12a and 12b.

  In addition, the nozzle chip 12 is protruded on the surface where the chip opening 12c is formed so as to surround the chip opening 12c, and is a pressure-contacted seal with the surface where the inflow opening 11h is formed in the chip housing portion 11j. It has a convex part 12h. The seal protrusion 12h is pressed into contact with a surface (one surface forming the chip storage portion 11j) in which the inflow opening 11h is formed in the chip storage portion 11j when the nozzle tip 12 is press-fitted into the chip storage portion 11j. The In other words, the protruding amount of the seal convex portion 12h is set so that the nozzle tip 12 is press-fitted into the tip accommodating portion 11j.

The operation of the vehicle wiper 1 configured as described above will be described.
For example, when a washer switch provided in the driver's seat is operated, the pivot shaft is reciprocally rotated by the driving force of the motor, and the vehicle wiper 1 is reciprocally rotated (oscillated). During the forward movement of the vehicle wiper 1, the cleaning liquid is supplied from the washer pump to the distal end side washer nozzle 9 via the hose 13, and the forward movement direction from the distal end side washer nozzle 9 (its injection ports 11 n, 12 a, 12 b). A cleaning liquid is sprayed onto the area Z2. Further, when the vehicle wiper 1 is moved back, the cleaning liquid is fed from the washer pump to the intermediate washer nozzle 8 via a hose (not shown) separate from the hose 13, and the intermediate washer nozzle 8 (its injection port) returns the recovery liquid. The cleaning liquid is sprayed on the moving direction area Z1. As a result, the wiper blade 3 of the vehicle wiper 1 quickly wipes the wiping surface Ga on which the cleaning liquid is jetted in accordance with the wiping direction, both during the forward movement and during the backward movement. Ga is washed well.

Next, the characteristic effects of the above embodiment will be described below.
(1) The nozzle tip 12 communicates with the inflow passage 11g (inflow opening portion 11h) (to the inflow passage 11g side), the tip opening portion 12c opened, and communicates with the tip opening portion 12c to supply the cleaning liquid to the injection port 11n. , 12a, 12b to guide holes 12d to 12f. Therefore, the cleaning liquid is guided from the inflow passage 11g to the injection ports 11n, 12a, and 12b through the tip opening 12c of the nozzle tip 12 and the guide holes 12d to 12f. The nozzle chip 12 is provided on the surface where the chip opening portion 12c is formed so as to surround the chip opening portion 12c, and is in pressure contact with the surface where the inflow opening portion 11h is formed in the chip housing portion 11j. It has a convex part 12h. Therefore, when the nozzle tip 12 is press-fitted from the external opening 11k and accommodated in the tip accommodating portion 11j, the seal convex portion 12h is liquid-tight with the surface on which the inflow opening 11h is formed around the tip opening 12c. The seal convex portion 12h prevents the cleaning liquid from leaking from the periphery of the chip opening 12c into the gap between the nozzle chip 12 and the chip storage portion 11j. Therefore, it is possible to prevent the cleaning liquid from leaking outside from the injection ports 11n, 12a, and 12b with a simple configuration in which the seal protrusion 12h is formed on one surface where the chip opening 12c is formed.

  (2) The direction from the inside of the inflow passage 11g toward the inflow opening 11h and the direction from the inside of the chip accommodating portion 11j toward the external opening 11k (that is, the direction in which the nozzle tip 12 comes out of the chip accommodating portion 11j) are Set in different directions. Therefore, the force of the cleaning liquid flowing into the nozzle tip 12 through the inflow passage 11g acts as a force for pressing the nozzle tip 12 against the inner surface of the tip accommodating portion 11j, and the nozzle tip 12 comes out of the tip accommodating portion 11j. That can be suppressed.

The above embodiment may be modified as follows.
In the above embodiment, the direction from the inside of the inflow passage 11g toward the inflow opening 11h and the direction from the inside of the chip accommodating portion 11j toward the external opening 11k (that is, the direction in which the nozzle tip 12 comes out of the chip accommodating portion 11j). Is set in a different direction, but is not limited thereto, and may be set in the same direction.

  In the above embodiment, the front end washer nozzle 9 has three injection ports, that is, three injection ports 11n, 12a, and 12b. However, it is sufficient that at least one injection port is provided. It is good also as a washer nozzle which does not have the mouth 11n.

  In the above embodiment, the tip washer nozzle 9 provided in the vehicle wiper 1 is embodied. However, the present invention is not limited to this. For example, the nozzle is specifically provided as a washer nozzle provided in a vehicle bonnet or the like to inject cleaning liquid onto the wiping surface Ga. Or may be embodied as a washer nozzle for injecting the cleaning liquid onto the lens of the back camera.

  DESCRIPTION OF SYMBOLS 11 ... Nozzle main body, 11g ... Inflow passage, 11h ... Inflow opening part, 11j ... Tip accommodating part, 11k ... External opening part, 11n, 12a, 12b ... Injection port, 12 ... Nozzle tip, 12c ... Tip opening part, 12d- 12f ... guide hole, 12h ... seal convex part.

Claims (2)

A nozzle body having an inflow passage and a tip accommodating portion that is open to the outside while an inflow opening communicating with the inflow passage is formed;
A washer nozzle having a nozzle tip that is press-fitted into an interior of the chip housing portion from an external opening and is housed in the chip housing portion and has an ejection port that ejects the cleaning liquid that has flowed in through the inflow passage;
The nozzle tip is
A tip opening that is open to communicate with the inflow passage;
A guide hole for guiding the cleaning liquid to said injection port in communication with said tip opening,
The surface where the chip opening is formed is provided so as to surround the chip opening and is pressed into contact with the surface where the inflow opening is formed in the chip housing in the state of being accommodated in the chip housing. A seal convex portion ,
The washer nozzle , wherein the ejection port is exposed to the outside from the external opening in a state where the nozzle chip is housed in the chip housing portion . The washer nozzle according to claim 1,
A washer nozzle, wherein a direction from the inside of the inflow passage toward the inflow opening and a direction from the inside of the chip housing portion toward the external opening are set in different directions.