JP2019059330A - Pour water prevention cap and drainage structure using the same - Google Patents

Abstract

To surely prevent pour water of a wiper link mechanism regardless of strength of water current, for achieving both of expansion of a wiper wiping area and size reduction of a deck space.SOLUTION: A cap 1 comprises: a bottom part 10 which extends to the surrounding of a pivot shaft and is inclined downward to a front side and receives water; side walls 11 which are erected along an outer peripheral edge part except for a front edge part of the bottom part 10, and surround the surrounding of the bottom part 10 in a state in which front sides of the side walls are opened; a drainage part 12 which is provided between the side walls 11 on a front end part of the bottom part 10, and is opened to a front side; and a first rib 13 which is erected from the bottom part 10, and forms in division formation, two exhaust ports 12a which are separated from each other on the drainage part 12. The side wall 11 comprises two arc-shaped wall parts 11a each of which is erected on each of both side edge parts in a width direction of the outer peripheral edge part of the bottom part 10, and in which the front edge parts thereof are extended in an arc-shape so as to come close to each other. The first rib 13 comprises two attenuation walls 13A erected in a cross direction to a direction of a tangent line 21 of each front edge part of the arc-shaped wall part 11a, in an axial direction view.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a water protection cap for preventing water on a wiper link mechanism built in a deck portion (deck space) of a vehicle, and a drainage structure using the water protection cap.

  The wiper link mechanism of the front wiper device of a vehicle is built in a space (so-called deck space) separating the vehicle interior space and the engine room. A deck garnish attached to the front end of the windshield is disposed above the wiper linkage, and the deck space is closed by the deck garnish. The deck garnish is provided with a pivot hole through which the pivot shaft of the wiper link mechanism is inserted, and the wiper arm is fixed to the tip of the pivot shaft projecting upward from the pivot hole.

  A wiper blade for wiping the glass surface is fixed to the tip of the wiper arm, but in order to expand the wiping area of the glass surface, the position of the pivot shaft is preferably as forward as possible. On the other hand, space saving of the deck space is important in order to widen the vehicle interior space while securing an engine room of a predetermined size. That is, coexistence with expansion of the wiping area and securing of a large vehicle interior space, such as arranging the pivot shaft on the front side as much as possible while achieving space saving of the deck space, is required.

  By the way, a part of water such as rain water and washing water which fell on the roof surface and the glass surface flows toward the deck garnish and is drained from the pivot hole to the outside of the vehicle through the inside of the deck space. At this time, a cap for preventing the water of the wiper link mechanism is fixed to the pivot shaft so that the water flowing down the pivot hole does not adhere to the wiper link mechanism (for example, Patent Document 1). The cap receives water flowing down from the pivot hole and drains it to the deck space.

Patent No. 5804276

  However, if the force of the water drained from the cap into the deck space is strong, the drained water may collide with the panels in the deck space and bounce back, and the splashed water may be applied to the wiper link mechanism. In particular, when the position of the pivot shaft is arranged on the front side of the vehicle in order to widen the wiping area of the wiper, the gap with the panel (panel of the deck portion) forming the deck space is reduced, and therefore water splashing more easily occurs. Become. Although it is possible to avoid the water coverage of the wiper link mechanism due to splashing water by widening the deck space and taking a distance from the panel, another problem arises that the vehicle interior space and the engine room become narrow. That is, it is difficult to achieve both the expansion of the wiper wiping area and the reduction of the deck space (saving the space), and there is room for improvement.

  Furthermore, when the force of water drained from the cap to the deck space is weak, the water received by the cap is likely to drip downward without colliding with the panels in the deck space. Therefore, there is little possibility of water splashing due to splashing water, but if the position of the outlet of the cap is close to the pivot shaft, the dropped water may be directly applied to the wiper link mechanism due to vibration or inclination of the vehicle.

  The water protection cap and the drainage structure of the present invention are devised in view of such problems, and the wiper wiping area is more reliably prevented by preventing the wiper link mechanism from being covered with water regardless of the momentum of the drained water. One of the objectives is to achieve both the expansion of the deck and the compactness of the deck space. The present invention is not limited to this object, and it is an operation and effect derived from each configuration shown in the embodiments for carrying out the invention described later, and it is also for the other object of the present invention to exert an operation and effect that can not be obtained is there.

  (1) The water prevention cap disclosed herein is formed in a container shape that receives water flowing down from a pivot hole formed in a deck garnish attached to the front end of a windshield of a vehicle, and is below the pivot hole It is a water proof cap provided so that the circumference | surroundings of the pivot axis | shaft of the wiper link mechanism penetrated by the said pivot hole may be enclosed. The water protection cap extends around the pivot shaft and is inclined downward, and the outer peripheral edge except the bottom for receiving the water and the front edge of the outer peripheral edge of the bottom Standing between the side wall surrounding the periphery of the bottom in a state where the front is open and the side wall at the front end of the bottom, a drainage portion opened forward, and standing from the bottom, And a first rib that separates and forms two drainage ports separated from each other in the drainage portion. The side wall is erected on both widthwise edges of the outer peripheral edge of the bottom, and has two arc-shaped wall portions extending in an arc so that the front edges thereof approach each other. Further, the first rib has two damping walls erected in a direction intersecting with the direction of the tangent of each front edge of the arc-shaped wall portion in the axial direction of the pivot shaft.

(2) The two damping walls are preferably formed in a concave shape that is recessed in a direction away from the front edge of the arc-shaped wall in the direction of the tangent.
(3) In this case, the damping wall is a lateral wall extending in the lateral direction along the front edge of the bottom, a longitudinal wall extending in the vertical direction, the lateral wall and the longitudinal wall Preferably, it is formed in a concave shape with an inclined wall portion extending perpendicularly to the direction of the tangent line.

(4) It is preferable that the said arc-shaped wall part is formed in the circular arc shape centering on the said pivot axis in the said axial direction view. In this case, it is preferable that the first rib is provided such that a rear end thereof overlaps with an imaginary circle drawn by the radius of the arc-shaped side wall.
(5) It is preferable that the side wall includes two separation wall portions extending forward from the front edges of the arc-shaped wall portions and separating from each other toward the front side.

(6) The drainage port is divided on the outside by the front edge of the separating wall portion, and the inside is divided on both edges in the width direction on the front side of the first rib, It is preferable that the two edge portions be disposed on the outer side than the respective front edges of the arcuate wall portion.
(7) The water protection cap preferably includes a second rib protruding downward from the lower surface of the front end portion of the bottom portion and extending in the left-right direction.
(8) The water protection cap preferably has a left-right symmetrical shape with respect to a straight line extending in the front-rear direction through the axial center of the pivot shaft in the axial direction.

  (9) The drainage structure disclosed herein is a drainage structure that receives water flowing toward the deck garnish attached to the front end of the windshield of the vehicle and drains the water out of the vehicle, and the pivot is formed through the deck garnish The water receiving member according to any one of the above (1) to (8), which is provided to surround the periphery of the pivot shaft of the wiper link mechanism inserted into the pivot hole below the pivot hole and the pivot hole. And a prevention cap.

  According to the disclosed water protection cap and drainage structure, the momentum of the water drained from the water protection cap can be reliably attenuated to prevent the wiper link mechanism from being covered with water more reliably, and the wiper wiping area can be removed. It is possible to achieve both enlargement and compactization of the deck space (saving of space).

It is a typical perspective view showing the windshield glass of a vehicle provided with the drainage structure concerning an embodiment, and the peripheral structure of a wiper link mechanism. It is the A section enlarged view (figure which looked at a deck garnish) of FIG. It is the longitudinal cross-sectional view cut | disconnected by the front-back direction cross-section which passes along the axial center of the pivot axis to which the water protection cap which concerns on embodiment is fixed. It is the typical perspective view which looked at the periphery structure of the water protection cap which concerns on embodiment from the front upper side. It is a schematic plan view of a water coverage prevention cap concerning an embodiment. It is a typical perspective view of a water fall prevention cap concerning an embodiment.

  A water protection cap and a drainage structure according to an embodiment will be described with reference to the drawings. The embodiments shown below are merely illustrative, and there is no intention to exclude the application of various modifications and techniques that are not specified in the following embodiments. Each structure of this embodiment can be variously modified and implemented in the range which does not deviate from those meaning. Also, they can be selected as needed or can be combined as appropriate. In the following description, the traveling direction of the vehicle is defined as the front (vehicle front) and the opposite side as the rear (vehicle rear), and the left and right are determined based on the front. Moreover, the direction of gravity is made into the downward direction, and the opposite is demonstrated as upper direction.

[1. Constitution]
As shown in FIG. 1, a deck garnish 3 is provided in front of the windshield 2 of the vehicle, and two wiper arms 5A of the front wiper device extend from the top of the deck garnish 3. The deck garnish 3 is attached to the front end of the windshield 2 as shown in FIGS. 2 and 3 and is provided to cover the upper side of a deck portion 7 (see FIG. 1) supporting the windshield 2. . A drive motor (not shown) for driving the wiper arm 5 A and a wiper link mechanism 4 for transmitting power are disposed in the deck space 8 inside the deck portion 7, and the deck garnish 3 is provided with the wiper link mechanism 4. A pivot hole 3h is formed in which the pivot shaft 4a of the above is inserted through. And below the pivot hole 3h, a water protection cap 1 is provided so as to surround the pivot shaft 4a.

  The water protection cap 1 is a component for preventing water in the wiper link mechanism 4 including the pivot shaft 4a. The water protection cap 1 of the present embodiment is a container-like component that receives water flowing down from the pivot hole 3 h penetrating the deck garnish 3 and drains the water to the front of the deck space 8. Further, the drainage structure of the present embodiment includes the pivot hole 3 h and the water protection cap 1.

  Water such as rain water and washing liquid from car wash on the roof or windshield 2 is, as shown by a broken arrow in FIG. 3, from the upper surface (glass surface) of the windshield 2 to the upper surface of the rear end 3r of the deck garnish 3 Flow from the pivot hole 3 h to the lower side of the deck garnish 3. Therefore, below the pivot hole 3h, in order to prevent the wiper link mechanism 4 from being flooded, a floodproof cap 1 is provided so as to surround the pivot shaft 4a so as to overlap the pivot hole 3h in the vertical direction. ing.

  In the present embodiment, a front wiper device provided on a right-hand drive vehicle is illustrated. That is, as shown in FIGS. 1 and 2, the pivot shaft 4a (see FIG. 3) of the wiper link mechanism 4 is provided at the right end side (driver's seat side) and middle portion (passenger seat side) in front of the windshield 2 Each wiper blade 5B wipes the upper surface of the windshield 2 by rotating the two wiper arms 5A with the pivot shaft 4a around the pivot shafts 4a.

  FIG. 2 is an enlarged view of a portion A of FIG. 1 and shows the deck garnish 3 in a transparent manner. In the vehicle of the present embodiment, two different water protection caps 1 and 9 having different shapes are fixed to the bearing 4b (see FIG. 3) of the pivot shaft 4a below the pivot hole 3h. The pivot shaft 4a is pivotable with respect to the bearing 4b. Each of the water protection caps 1 and 9 has both the function of receiving the water flowing down from the pivot hole 3 h and draining the water, and the function of preventing the water of the wiper link mechanism 4. Hereinafter, the water protection cap 1 fixed to the pivot shaft 4a of the intermediate portion (passenger seat side) will be described in detail. Although the right-hand drive vehicle is illustrated in the present embodiment, the water protection cap 1 may be applied to the pivot shaft of the middle portion (passenger seat side) of the left-hand drive vehicle.

  The water prevention cap 1 (hereinafter referred to as "cap 1") of the present embodiment, as shown in FIGS. 3 and 4, extends around the pivot shaft 4a and receives the water flowing down from the pivot hole 3h. And a side wall 11 surrounding the periphery of the bottom 10. In addition, the cap 1 is provided between the side walls 11 at the front end of the bottom portion 10, the drainage portion 12 opened to the front, and the drainage portion 12 erected from the upper surface of the bottom portion 10 And a first rib 13 for forming a section of the pattern portion in FIG. Furthermore, the cap 1 of the present embodiment is erected at a substantially central portion of the upper surface of the bottom portion 10 with the second rib 14 protruding downward from the lower surface of the front edge portion of the bottom portion 10, and the bearing 4b of the pivot shaft 4a. And the cylindrical portion 15 in which it is internally fitted.

  As shown in FIG. 3, the cap 1 is attached so as to surround the pivot shaft 4 a in a posture in which the bottom portion 10 inclines downward. The bottom portion 10 is provided with a first region 10a in which the cylindrical portion 15 is formed, and a second region 10b extending forward of the first region 10a. The first area 10a is located immediately below the pivot hole 3h, and is an area directly receiving flowing water. On the other hand, the second area 10b is an area for guiding the water received in the first area 10a to the drainage port 12a at the front edge of the bottom 10 (second area 10b). The first area 10a has an outer shape larger than the outer shape of the pivot hole 3h, and has a size sufficient to receive water flowing in from the pivot hole 3h. Further, the front portion (the front end portion of the bottom portion 10) of the second region 10b corresponds to the drainage portion 12.

  In the bottom portion 10 of the present embodiment, as shown in FIGS. 4 and 5, the first region 10a is formed in a substantially annular shape centered on the axial center C of the pivot shaft 4a (the central axis of the cylindrical portion 15). The two regions 10 b are formed in a substantially trapezoidal shape in which the width (the dimension in the left-right direction) gradually expands toward the front. And in the boundary part of the 1st field 10a and the 2nd field 10b, width (horizontal direction size) of bottom 10 is the narrowest.

  Also, as shown in FIGS. 4 to 6, the side wall 11 is provided along the outer peripheral edge except for the front edge of the outer peripheral edge of the bottom 10 (the front edge of the second region 10 b). , Only the front has an open shape. The side wall 11 is erected along the side edges in the width direction (left and right direction) of the first region 10a, and includes two curved arc-shaped wall portions 11a each of which bulges outward in the width direction (outside in the left and right direction). Furthermore, the side walls 11 of the present embodiment are continuously provided from the front edge portions of the arc-shaped wall portion 11a along the side edges in the width direction (left and right direction) of the second region 10b. And two separate partition walls 11b. The side wall 11 is curved and erected so as to increase in diameter from the outer peripheral edge of the bottom 10 toward the upper end side of the pivot shaft 4a.

  The arc-shaped wall portion 11 a is formed, for example, in an arc shape centered on the axial center C of the pivot shaft 4 a (the central axis of the cylindrical portion 15). As shown in FIG. 5, the arc-shaped wall 11a of the present embodiment is formed in a substantially arc shape along an imaginary circle 20 (an alternate long and short dash line in the figure) centering on the axial center C, and in front of the two arced walls 11a. The edges extend in an arc so as to approach each other at the boundary between the first area 10 a and the second area 10 b of the bottom 10. For this reason, the distance between the two front edges of the arc-shaped wall 11a (left-right dimension) is the distance between the two arc-shaped walls 11a passing through the axis C (left-right direction), ie, the axis C It is smaller than the diameter of the imaginary circle 20.

  The separation wall portion 11b is disposed such that its front edge portion is more outward than the rear edge portion (that is, the boundary portion with the arc-shaped wall portion 11a). In addition, "outside" here means the side left | separated from the pivot axis 4a in the left-right direction. Similarly, in the left and right direction, the pivot shaft 4 a side (center side) is referred to as “inner side”. And in the side wall 11 of the present embodiment, the two throttling portions 11c formed in a convex shape inward in the width direction (left and right direction) of the cap 1 at the boundary between the arc-shaped wall portion 11a and the separation partition wall portion 11b. It is arranged oppositely.

  In addition, the bottom part 10 of the cap 1 of this embodiment has the 3rd area | region 10c expanded back from the 1st area | region 10a. The third region 10c is provided to vertically overlap with the wedge member 6 indicated by a two-dot chain line in FIG. 5, and water is supplied from a slight gap between the lower surface of the front end of the windshield 2 and the deck garnish 3 When flowing down, it is an area with the function to receive the water.

  The side wall 11 of the present embodiment includes a U-shaped wall portion 11 d erected around the third region 10 c at the rear of the arc-shaped wall portion 11 a. When viewed from the axial direction of the pivot shaft 4a (in an axial direction), the U-shaped wall portion 11d has a U-shape opened forward, and is formed continuously with the rear edge of the arc-shaped wall portion 11a. That is, the arc-shaped wall portion 11a of the present embodiment is separated at the rear of the cylindrical portion 15, and the U-shaped wall portion 11d is formed in the separated portion.

  In addition, the cap 1 of this embodiment has the partition wall 16 erected so that the 1st area | region 10a of the bottom part 10 and the 3rd area | region 10c may be divided partially. A gap communicating the first area 10 a and the third area 10 c is provided between both edge portions of the partition wall 16 and the side wall 11. The partition wall 16 of the present embodiment is formed in an arc shape along the virtual circle 20, and has a radius substantially the same as that of the arc-shaped wall portion 11a. That is, the partition wall 16 is disposed to compensate for the separated portion of the arc-shaped wall portion 11a.

  The drainage portion 12 is a portion for draining the water received at the bottom portion 10 forward, and each drainage port 12a is an opening from which the water flows out. As the drainage port 12a of this embodiment is surrounded by a two-dot chain line in FIG. 4 and shown with a pattern, the outer side is partitioned by the front edge portion of the separating partition portion 11b, and the inner side is opposed to this It is divided by the front edge 13 e of one rib 13. Since the two drainage ports 12 a are formed separately by the first rib 13, each drainage port 12 a is disposed to be shifted outward from the pivot shaft 4 a in the left-right direction. Furthermore, in the cap 1 of the present embodiment, since the drainage portion 12 spreads in a trumpet shape toward the front, the two drainage ports 12 a are at positions separated from each other in the left-right direction outside, and the cap 1 is viewed from the front When the drain 12a and the pivot shaft 4a do not overlap. As a result, since the drainage position is at a position further away from the pivot shaft 4a, the water drained from the drainage port 12a is less likely to catch on the wiper link mechanism 4 (pivot shaft 4a, bearing 4b, lever 4c, etc.).

  As shown in FIG. 5, the first rib 13 has a substantially triangular shape in the axial direction, and has a function to separate the water received at the bottom 10 into the two drainage ports 12a and a strong flow down to the cap 1 from the pivot hole 3h. Together with the function of damping the flow of water. In addition, the first rib 13 also has a function of blocking so that the dead leaf invaded from the pivot hole 3 h does not fall into the deck space 8. The first rib 13 is provided so as to be erected in a direction intersecting with the direction of the tangent line 21 (two-dot chain line in FIG. 5) of the front edges of the left and right arc-shaped wall portions 11a in the axial direction. It has a damping wall 13A. The two damping walls 13A are formed symmetrically about a straight line L (an alternate long and short dash line in FIG. 5) extending in the front-rear direction through the axial center C. The damping wall 13A is a portion that exhibits the above-described function of the first rib 13. The first rib 13 may have a reinforcing wall (not shown) for reinforcing the damping wall 13A.

  The first rib 13 of the present embodiment has two attenuation walls 13A bent or curved in an axial direction. The damping wall 13A has a concaved shape toward the downstream side of the flow so as to damp the force of the water flowing obliquely forward along the arc-shaped wall portion 11a. Specifically, in the direction of the tangential line 21, the opposite side to each front edge of the arc-shaped wall 11a, that is, a concave shape recessed in a direction away from each front edge of the arc-shaped wall 11a.

  The damping wall 13A of the present embodiment is a horizontal wall 13f extending in the left-right direction along the front edge of the bottom 10 (second region 10b) and a vertical wall extending in the front-rear direction so as to overlap the virtual circle 20. The portion 13r is formed in a concave shape by connecting an inner edge of the lateral wall portion 13f and a front edge of the vertical wall portion 13r, and an inclined wall portion 13c extending substantially orthogonal to the tangent line 21. That is, in the axial direction, the damping wall 13A extends the lateral wall 13f and the vertical wall 13r in the left and right direction and the front and rear direction from both sides of the inclined wall 13c, respectively, to move the flow downstream. It is made into the shape (concave part) bent in concave shape. In the present embodiment, although the damping wall 13A is in a concave shape in which it is bent, it may be formed in a concave shape that is curved toward the downstream side of the flow.

  Further, the first rib 13 is disposed such that the front edge 13e (the outer edge of the lateral wall 13f) is more outward than the respective front edges of the arc-shaped wall 11a. That is, the front edge 13e of the first rib 13 is spaced apart from the axial center C in the left-right direction more than the narrowed portion 11c. In the cap 1 of the present embodiment, the narrowed portion 11c and the lateral wall portion 13f of the first rib 13 overlap in the front-rear direction by a length X in the left-right direction.

  The second rib 14 has a function of cutting water which propagates on the lower surface of the bottom 10, and as shown in FIGS. 3, 4 and 6, along the front edge of the bottom 10 (second region 10b) in the left-right direction It will be extended. In addition, the cap 1 of this embodiment is symmetrical with respect to the straight line L extended in the front-back direction through the axial center C of the pivot shaft 4a, as shown in FIG. That is, the drainage port 12a and the damping wall 13A described above are respectively provided in a pair in left-right symmetry.

[2. Action, effect]
The rain water falling on the roof or the windshield 2 and water such as washing liquid by car wash flow downward from the pivot hole 3 h of the deck garnish 3 and are received by the cap 1 as shown by broken arrows in FIG. When the force of water is strong (when the amount of water is large or the flow is fast), the water swirls along the shape of the pivot hole 3h from the pivot hole 3h indicated by a two-dot chain line in FIG. While being wound, it flows vigorously into the cap 1, and flows along the arc-shaped wall portion 11a as shown by a thick broken line in FIG. The water collides with a damping wall 13A erected in a direction intersecting with the direction of the tangent line 21 and its momentum is damped and then drained from the drainage ports 12a.

  On the other hand, when the force of water is relatively weak (when the amount of water is small or the flow is slow), the water gently flows down from the pivot hole 3h to the cap 1 and is shown by a thin broken line in FIG. So, it flows forward almost linearly. Since the first rib 13 is erected between the two drainage ports 12a, this water is further dampened by the first rib 13, and then divided into the drainage ports 12a on both sides, and each drainage It drains from the mouth 12a.

  (1) That is, according to the cap 1 described above, when the force of water is strong, after the force is surely damped by the first rib 13, the two drainage ports formed at a position away from the pivot shaft 4a Since it is possible to drain the water from 12a, as shown by the broken arrow in FIG. Generation) can be suppressed. In addition, when the force of water is relatively weak, the water can be drained from the two drains 12a formed at positions away from the pivot shaft 4a.

  Therefore, according to the cap 1 described above and the drainage structure using the same, it is possible to more reliably prevent the water of the wiper link mechanism 4 from being wet regardless of the momentum of water. In addition, since it is possible to prevent the wiper link mechanism 4 from being flooded by devising the shape of the cap 1, there is no need to move the position of the pivot shaft 4 a backward or to make the deck space 8 wide. Therefore, it is possible to achieve both the expansion of the wiper wiping area and the downsizing (space saving) of the deck space 8.

(2) The first rib 13 of the cap 1 described above has the damping wall 13A recessed in the direction away from the front edge of the arc-shaped wall portion 11a in the direction of the tangent 21 and therefore the water when it collides with the damping wall 13A The momentum of the water can be attenuated more reliably while suppressing the bounce. As a result, the generation of the spring water can be further suppressed, and therefore, the water of the wiper link mechanism 4 can be further prevented.
(3) Further, since the damping wall 13A is formed in a concave shape from the lateral wall 13f and the vertical wall 13r, and the inclined wall 13c extending perpendicularly to the direction of the tangent line 21 connecting these, The force of the water flowing along the arc-shaped wall portion 11a can be surely damped, and the generation of the spring water can be suppressed more effectively.

  (4) Further, since the first rib 13 is provided such that the rear end 13r overlaps the virtual circle 20 drawn by the radius of the arced wall 11a, the water flowing along the arced wall 11a is reduced to the damping wall 13A. It becomes easy to collide. Thereby, when the force of the water is strong, the force of the water can be attenuated more reliably, so that the generation of the bouncing water can be further suppressed, and the water of the wiper link mechanism 4 can be prevented more reliably. it can.

(5) Since the separation wall portion 11b is provided on the side wall 11 of the cap 1 described above, the position of the drainage port 12a can be further separated from the pivot shaft 4a. For this reason, the water of the wiper link mechanism 4 can be more reliably prevented.
(6) Moreover, in the cap 1 mentioned above, the edge 13e of the front side of the 1st rib 13 is arrange | positioned outside the each front edge of the arc-shaped wall part 11a. As a result, even when the force of water is weak, the flowing water always strikes the first rib 13 and is damped, and then it can be quietly drained along the first rib 13 away from the pivot shaft 4a. For this reason, the water of the wiper link mechanism 4 can be more reliably prevented.

(7) The cap 1 described above is provided with the second rib 14 for draining, and since the water drained from the drainage port 12a is surely dropped downward by the second rib 14, when the force of the water is weak In addition, it is possible to reliably block the transfer of drained water from the front edge of the bottom 10, which is the lower edge of the drain 12a, to the bottom of the bottom 10. For this reason, it can prevent that water runs to the wiper link mechanism 4 side, and can prevent the water of the wiper link mechanism 4 from being wetted.
(8) In addition, since the above-described cap 1 has a symmetrical shape, the flow of water flowing into the cap 1 from the pivot hole 3h is clockwise or counterclockwise. You can dampen the momentum. Moreover, if it is the cap 1 of left-right symmetrical shape, it can apply not only to a right-hand drive car but to a left-hand drive car.

[3. Other]
The structure of the cap 1 described above is an example, and is not limited to the above. For example, the third region 10c may be omitted from the cap 1 described above, and a part of the side wall 11 may be formed at the position of the partition wall 16 to connect the rear edges of the two arc-shaped wall portions 11a. At least the side wall 11 is provided with two arc-shaped wall portions 11a erected on both lateral edges in the width direction of the outer peripheral edge of the bottom portion 10 and extended so that their front edges approach each other The arc-shaped wall portion 11a may not have an arc shape centering on the pivot shaft 4a, and the separation partition wall portion 11b and the U-shaped wall portion 11d may be omitted. In addition, the second rib 14 for draining may be omitted, and the cap 1 may not have a symmetrical shape.

  The first rib 13 may be provided with two damping walls 13A erected in a direction intersecting with the direction of the tangent 21 of each front edge of the arc-shaped wall 11a in the axial direction, Its shape and arrangement are not limited to those described above. For example, the first rib 13 may not be disposed at the center in the left-right direction (on the straight line L) of the cap 1, and the throttling portion 11c and the lateral wall portion 13f of the first rib 13 do not overlap in the front-rear direction May be Although the above-mentioned damping wall 13A has a shape bent in the axial direction, it may have a curved shape in the axial direction. The damping wall 13A may be linear in the axial direction. In addition, the vertical wall portion 13r of the damping wall 13A may be disposed at a position not overlapping the virtual circle 20 (for example, a position in contact with the virtual circle 20).

  Although the case where the cap 1 is provided so as to surround the periphery of the pivot shaft 4a in the middle part of the right-hand drive vehicle is illustrated in the embodiment described above, the cap 1 is a pivot on the right end side (driver's seat side) of the right-hand drive vehicle. It may be provided to surround the axis 4a. In addition, it may be provided so as to surround the pivot axes of the left end side (the drivability side) and the middle portion (the passenger side) of the left-hand drive vehicle.

1 Cap (waterproof cap)
Reference Signs List 2 windshield 3 deck garnish 3h pivot hole 4 wiper link mechanism 4a pivot shaft 9 water prevention cap 10 bottom 11 side wall 11a arc-shaped wall portion 11b separation partition portion 12 drainage portion 12a drainage port 13 first rib 13A damping wall 13c inclined wall portion 13f Horizontal wall 13e Front edge 13r Vertical wall 14 Second rib 16 Partition 20 Virtual circle 21 Tangent C Axis of pivot axis

Claims (9)

Pivot shaft of a wiper link mechanism formed in a container shape for receiving water flowing down from a pivot hole installed in a deck garnish attached to the front end of a windshield of a vehicle, and inserted into the pivot hole below the pivot hole. A water protection cap provided so as to surround the periphery of the
A bottom portion extending around the pivot shaft and inclined downward and receiving the water;
A side wall which is erected along the outer peripheral edge except for a front edge of the outer peripheral edge of the bottom and which surrounds the periphery of the bottom in a state where the front is open;
A drainage portion provided between the side walls at the front end of the bottom portion and opened forward;
And a first rib which is erected from the bottom and separates two drains separated from each other in the drainage portion;
The side wall has two arc-shaped wall portions which are erected on both widthwise edges of the outer peripheral edge of the bottom and whose front edges extend close to each other,
The first rib is characterized in that it has two damping walls erected in a direction intersecting with a direction of a tangent of each front edge of the arc-shaped wall portion in the axial direction of the pivot shaft. , Water proof cap. The water blocking cap according to claim 1, wherein the damping wall is formed in a concave shape which is recessed in a direction away from the front edge of the arc-shaped wall portion in the direction of the tangent line. The damping wall connects a lateral wall extending in the left and right direction along the front edge of the bottom, a longitudinal wall extending in the vertical direction, the lateral wall and the longitudinal wall, and the direction of the tangent line The water-repellent cap according to claim 2, characterized in that it is concavely formed with an inclined wall portion extending perpendicularly to the above. The arc-shaped wall portion is formed in an arc shape centering on the pivot axis in the axial direction,
The said 1st rib is provided so that a rear end may overlap with the virtual circle drawn by the radius of the said arc-shaped wall part, The water-proof cap of any one of Claims 1-3 characterized by the above-mentioned . The said side wall is characterized by including two separating partition parts extended forwardly from said each front edge part of said arc-shaped wall part, and mutually spaced apart as it goes to the front. The water protection cap according to item 1. The drainage port is divided on the outside by the front edge of the separation partition, and the inside is divided on both edges in the width direction on the front side of the first rib,
The said both edge of the said 1st rib is arrange | positioned outside the said each front edge of the said arc-shaped wall part, The water-protection cap of Claim 5 characterized by the above-mentioned. The water protection cap according to any one of claims 1 to 6, further comprising a second rib protruding downward from the lower surface of the front end portion of the bottom portion and extending in the left-right direction. . The waterproof cap according to any one of claims 1 to 7, wherein the cap is symmetrical with respect to a straight line extending in the front-rear direction through the axial center of the pivot shaft in the axial direction. . A drainage structure that receives water flowing toward a deck garnish attached to a front end of a windshield of the vehicle and drains it out of the vehicle,
A pivot hole provided through the deck garnish;
The water proof cap according to any one of claims 1 to 8, provided around the pivot shaft of a wiper link mechanism inserted into the pivot hole below the pivot hole. Drainage structure characterized by

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