JP2018154160A - Vehicle sunroof device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle sunroof device which can inhibit enlargement in a vehicle width direction.SOLUTION: A vehicle sunroof device includes: a pair of guide rails 10 which are provided at both end parts of an opening formed at a roof of a vehicle when viewed in a vehicle width direction; and a rain channel 20 bridging between the pair of guide rails 10 in the vehicle width direction. The rain channel 20 has: a pair of guide parts 22 which guide a liquid flowing in a longitudinal direction of the rain channel 20 to the guide rails 10; and a pair of engagement parts 50 which engage with the pair of guide rails 10. Each guide rail 10 has: a drainage wall forming a drainage groove 15a which receives the liquid guided by the guide part 22; and a restriction part 40 which engages with the engagement part 50 to restrict movement of the rain channel 20. The restriction part 40 is provided at the inner side of the drainage groove 15a in the vehicle width direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vehicle sunroof device.

  Patent Document 1 includes a guide rail disposed at both edges in the vehicle width direction of an opening formed in a roof portion of the vehicle, and a drain that bridges a pair of guide rails in the vehicle width direction. A vehicle sunroof device is disclosed. In this vehicle sunroof device, the drain receives water droplets falling from the front end or the rear end of the movable panel when the movable panel is opened and closed. And a drain guides the water droplet received from the movable panel to the drain part formed in the guide rail.

JP 2011-194918 A

  By the way, in the above-described vehicle sunroof device, a flange-shaped mounting piece provided on the guide rail and a flange-shaped mounting portion provided on the drain are connected. In the guide rail, the attachment piece extends outward in the vehicle width direction from the opening end of the drain portion on the outer side in the vehicle width direction. For this reason, in the said sunroof apparatus for vehicles, the room for improvement was left about the point which suppresses the enlargement in a vehicle width direction.

  The present invention has been made in view of such circumstances. An object of the invention is to provide a vehicle sunroof device that can suppress an increase in size in the vehicle width direction.

  A sunroof device for a vehicle that solves the above problems includes a pair of guide rails provided at both ends in the vehicle width direction of an opening formed in a roof of the vehicle, and a rain channel that bridges the pair of guide rails in the vehicle width direction. The rain channel includes a pair of guide portions for guiding the liquid flowing in the longitudinal direction of the rain channel to the guide rail, and a pair of engagement members engaged with the pair of guide rails. And the guide rail engages with the drainage wall forming the drainage groove for receiving the liquid guided from the guide and the engaging portion to move the rain channel. A regulating portion for regulating, and the regulating portion is provided on the inner side in the vehicle width direction than the drainage groove.

  According to the above configuration, the guide rail restricting portion that engages with the rain channel engaging portion to restrict the movement of the rain channel is provided inside the drainage groove of the guide rail in the vehicle width direction. For this reason, in order to provide the regulating portion in the guide rail, it is not necessary to provide a portion extending from the opening end of the drainage groove on the outer side in the vehicle width direction to the outer side in the vehicle width direction. Therefore, the enlargement of the vehicle sunroof device in the vehicle width direction can be suppressed.

  In the above vehicle sunroof device, the restricting portion includes a first restricting portion and a second restricting portion provided at intervals in the vehicle front-rear direction, and a base end of the rain channel is cantilevered. And a first engaging portion provided with an elastic piece whose tip engages with the first restricting portion, and a second engaging portion that engages with the second restricting portion, and the guide rail includes the first engaging portion. In a state where the rain channel is attached, the first engaging portion urges the first restricting portion in the vehicle width direction by the restoring force of the elastic piece, and the first engaging portion and the second engaging portion are energized. It is preferable that the joint portion is sandwiched between the first restricting portion and the second restricting portion in the vehicle front-rear direction.

  According to the above configuration, in a state where the rain channel is attached to the guide rail, the elastic piece included in the first engagement portion biases the first restricting portion in the vehicle width direction by the restoring force of the elastic piece. For this reason, shakiness of the rain channel in the vehicle width direction with respect to the guide rail can be suppressed. Further, the first engaging portion and the second engaging portion are sandwiched between the first restricting portion and the second restricting portion in the vehicle front-rear direction, thereby suppressing rattling of the rain channel with respect to the guide rail in the vehicle front-rear direction. it can.

  In the vehicle sunroof device, the first restricting portion is a convex portion having a first restricting surface that intersects the vehicle width direction and a second restricting surface that intersects the vehicle longitudinal direction, and the first engagement. The part is preferably a recess having a first engagement surface that comes into contact with the first restriction surface and a second engagement surface that comes into contact with the second restriction surface.

  According to the above configuration, the rattling in the vehicle width direction and the vehicle front-rear direction is simplified with a simple configuration in which the first restriction portion of the guide rail is configured as a convex portion and the first engaging portion of the rain channel is configured as a concave portion. A guide rail and rain channel mounting structure can be realized.

  In the vehicle sunroof device, the drainage wall includes a first drainage wall provided on the outer side in the vehicle width direction and a second drainage wall provided on the inner side in the vehicle width direction, and a lower end of the guide portion. Is arranged in the drainage groove in the vertical direction, and a gap is provided between the guide portion and the first drainage wall, and between the guide portion and the second drainage wall. Are preferably spaced.

  When adopting a configuration in which the guide unit is in contact with at least one of the first drainage wall and the second drainage wall, the guide unit may be at least one of the first drainage wall and the second drainage wall due to vibration during vehicle travel. There is a risk that abnormal noise may be generated by contacting or leaving one side. In this regard, according to the above configuration, since the gap is provided between the guide portion and the first drainage wall and the second drainage wall, occurrence of abnormal noise as described above can be suppressed.

  In the vehicle sunroof device, it is preferable that the engaging portion is integral with the rain channel.

  According to the said structure, the assembly of a vehicle sunroof apparatus can be made easy at the point which does not need to provide a rain channel and an engaging part separately.

(A), (b) is a perspective view of the vehicle carrying the vehicle sunroof apparatus. The top view of the sunroof apparatus for vehicles. The enlarged plan view of a rain channel and a guide rail. The expanded sectional view of a rain channel and a guide rail. The disassembled perspective view of a rain channel and a guide rail. The expansion perspective view of the engaging part of a rain channel. The expansion perspective view of the engaging part of a rain channel. (A), (b) is a figure which shows the engagement aspect of a rain channel and a guide rail. Sectional drawing which shows the engagement aspect of a rain channel and a guide rail.

  Hereinafter, an embodiment of a sunroof device for a vehicle will be described.

  As shown in FIGS. 1A and 1B, the vehicle sunroof device 100 of this embodiment is mounted on a roof 110 of a vehicle such as an automobile. Then, the movable panel 30 of the vehicle sunroof apparatus 100 slides from the closed state shown in FIG. 1 (a) to the open state shown in FIG. 1 (b), whereby an opening formed in the roof of the vehicle. 30a is exposed. In this way, the vehicle sunroof device 100 can give a feeling of opening to the vehicle occupant. In the opening / closing operation of the movable panel 30, a so-called outer sliding type is employed in which the movable panel 30 slides while being tilted up.

  Hereinafter, the vehicle sunroof device (hereinafter also simply referred to as “sunroof device”) 100 will be described in detail. In the following description, the direction of the sunroof device 100 is defined with the sunroof device 100 assembled to the vehicle. That is, the vehicle width direction is defined as “width direction”, the vehicle longitudinal direction is defined as “front / rear direction”, and the vehicle vertical direction is defined as “vertical direction”. A direction facing the vehicle outer side in the width direction is referred to as “outward direction”, and a direction facing the vehicle inner side in the width direction is referred to as “inward direction”.

  As shown in FIG. 2, the sunroof device 100 includes a pair of guide rails 10 disposed at both edges in the width direction of a substantially rectangular opening 30 a formed on the roof 110 of the vehicle, and a front end of the guide rail 10. And a rain channel 20 that connects (bridges) the intermediate portions in the longitudinal direction of the guide rail 10. The sunroof device 100 also includes a movable panel 30 that closes or exposes the opening 30a, a drive mechanism 32 that opens and closes the movable panel 30, and a deflector 33 that tilts as the movable panel 30 is opened. .

  As shown in FIG. 2, the drive mechanism 32 includes a motor 32 a that is disposed in the middle in the longitudinal direction of the front housing 31, and a pair of substantially belt-like drive belts 32 b that are wound along the front housing 31 and the guide rail 10. And a pair of functional parts 32c that are arranged at both ends in the width direction of the movable panel 30 and are connected to the motor 32a via each of the pair of drive belts 32b. Each functional component 32c moves in the front-rear direction along the guide rail 10 by the driving force of the motor 32a. In this way, the movable panel 30 connected to each functional component 32c slides between the closed state and the open state shown in FIGS. 1 (a) and 1 (b).

  As shown in FIG. 2, the sunroof device 100 has a symmetrical structure. For this reason, in the following description, it demonstrates paying attention to the vehicle one side of the sunroof apparatus 100. FIG.

  As shown in FIGS. 3 and 4, the guide rail 10 has a plate shape whose longitudinal direction is the front-rear direction. The guide rail 10 has a certain cross-sectional shape in a cross-sectional view orthogonal to the front-rear direction. The guide rail 10 is formed, for example, by extruding or drawing an aluminum alloy.

  As shown in FIG. 4, the guide rail 10 has four walls protruding upward from a bottom portion 15 extending substantially orthogonal to the vertical direction. That is, the first wall 11, the second wall 12, the third wall 13, and the fourth wall 14 protrude from the vehicle outer side toward the vehicle inner side. The guide rail 10 has three grooves formed by the four walls and the bottom portion 15. That is, the guide rail 10 includes a drainage groove 15a formed by the first wall 11 and the second wall 12, a sliding groove 15b formed by the second wall 12 and the third wall 13, and a third And a fourth housing groove 15 c formed by the fourth wall 14.

  The drainage groove 15 a is a groove that receives the liquid flowing along the surface of the movable panel 30 in the closed state to both outer end portions in the width direction of the movable panel 30. The sliding groove 15b is a groove in which the functional component 32c that opens and closes the movable panel 30 slides. The second accommodation groove 15 c is a groove that accommodates the rotation support portion 33 a of the deflector 33.

  In the present embodiment, the first wall 11 corresponds to an example of “first drainage wall (drainage wall)”. The second wall 12 corresponds to an example of “second drainage wall (drainage wall)”.

  As shown in FIG. 4, the fourth wall 14 includes a side wall 141 projecting upward from the bottom wall 15, a plate-like upper flange 142 projecting inward from the upper end of the side wall 141, and a lower side than the upper flange 142. And a plate-like lower flange 143 projecting inward from the side wall 141 on the side. The side wall 141, the upper flange 142, and the lower flange 143 are provided across the longitudinal direction of the guide rail 10. The fourth wall 14 has a second receiving groove 15 d formed by the side wall 141, the upper flange 142, and the lower flange 143. The second housing groove 15d is used, for example, for attaching a garnish that covers a vehicle frame or the like from the vehicle interior.

  As shown in FIG. 5, a first notch 14 a and a second notch 14 b are formed in the longitudinal center portion of the upper flange 142 at intervals in the front-rear direction. In the upper flange 142, the first notch 14a is formed on the front side, and the second notch 14b is formed on the rear side. The first notch 14a and the second notch 14b have a rectangular shape with a long side in the front-rear direction and a short side in the width direction in plan view. In addition, what is necessary is just to form these two notches by press work, for example.

  As shown in FIG. 5, the fourth wall 14 has a restricting portion 40 formed by a first notch 14 a and a second notch 14 b. The restriction unit 40 includes a first restriction unit 41 and a second restriction unit 42. The first restricting portion 41 includes a first restricting surface 41a adjacent to the front side of the first notch 14a in the side surface of the fourth wall 14 outside the vehicle, and a first notch 14a provided on the upper flange 142. It is a convex part comprised by the 2nd control surface 41b formed by. Here, the second restricting surface 41b is the front end surface of the end surfaces of the upper flange 142 facing the first notch 14a in the front-rear direction by providing the first notch 14a. Thus, the first restricting portion 41 has a convex shape in the direction between the vehicle rear and the outer direction in plan view. The second restricting portion 42 is a portion of the upper flange 142 adjacent to the rear side of the first notch 14a and the second notch 14b.

  Next, the rain channel 20 will be described.

  As shown in FIG. 2, the rain channel 20 includes a main body portion 21 extending in the width direction, a pair of guide portions 22 provided at both ends in the longitudinal direction of the main body portion, and the main body portion 21 more than the guide portion 22. And an engaging portion 50 provided on the inner side in the longitudinal direction. In addition, the rain channel 20 is integrally molded by a resin material, for example.

  The main body 21 is curved so as to proceed downward from the central portion in the longitudinal direction toward both ends. As for the main-body part 21, the wall part extended toward the perpendicular upper direction is provided over the width direction in the front-end part and rear-end part.

  As shown in FIG. 4, the guide unit 22 includes an insertion unit 221 that changes the flow direction of the liquid. The insertion portion 221 is inserted into the drainage groove 15 a in a state where the rain channel 20 is attached to the guide rail 10. The size of the insertion portion 221 in the width direction is made smaller than the gap in the width direction between the first wall 11 and the second wall 12. Further, when the rain channel 20 is attached to the guide rail 10, the first wall 11 and the insertion portion 221, and the second wall 12 and the insertion portion 221 are spaced apart.

  As shown in FIG. 2, in a state where the rain channel 20 is attached to the guide rail 10, the rain channel 20 is disposed below the rear end of the movable panel 30 in the closed state. The liquid flowing from the central portion of the movable panel 30 in the closed state due to rain or the like to the rear end portion is received by the main body portion 21 and flows toward the guide portions 22 provided at both longitudinal ends of the main body portion 21. The liquid that has flowed to the guide portion 22 is discharged from the insertion portion 221 of the guide portion 22 to the drainage groove 15 a of the guide rail 10.

  Next, the engaging part 50 which is a structure for attaching the rain channel 20 to the guide rail 10 will be described.

  As shown in FIGS. 6 and 7, the engaging portion 50 includes two support portions 53 (53a, 53b), an elastic piece 51, and two sandwiching pieces 52 (52a, 52b). The

  As shown in FIG. 6, the support portion 53 includes a first support portion 53 a extending in the front direction from the main body portion 21 and a second support portion 53 b extending in the rear direction from the main body portion 21. The 1st support part 53a and the 2nd support part 53b comprise plate shape, and are substantially orthogonal to the up-down direction.

  Further, as shown in FIG. 6, the elastic piece 51 is cantilevered at the base end portion by the first support portion 53a, and protrudes from the first support portion 53a toward the inward direction in the forward direction. Yes. A concave portion is formed at the distal end portion of the elastic piece 51 so that the distal end portion is cut out into a substantially L shape in plan view. A first engagement surface 51 a that intersects the width direction and a second engagement surface 51 b that intersects the front-rear direction are formed in the recess at the tip of the elastic piece 51.

  As shown in FIG. 7, the sandwiching piece 52a is cantilevered by the support portion 53a, and the sandwiching piece 52b is cantilevered by the support portion 53b. Specifically, the sandwiching pieces 52a and 52b extend substantially in parallel with the support portion 53 in the rearward direction after extending downward. A convex portion 521 (521a, 521b) protruding upward is formed at the rear end of the sandwiching piece 52 (52a, 52b). The distance between the support portion 53 (53a, 53b) and the convex portion 521 (521a, 521b) is slightly smaller than the plate thickness of the upper flange 142 in the vertical direction.

  Next, with reference to FIGS. 5, 8, and 9, the attachment structure of the rain channel 20 to the guide rail 10 will be described focusing on the engagement portion 50 and the restriction portion 40 on the right side of the vehicle. In the following description, a state where the rain channel 20 is attached to the guide rail 10 is also referred to as an “engaged state”.

  When the rain channel 20 is attached from the state before the rain channel 20 is attached to the guide rail 10 as shown in FIG. 5, first, the two clamping pieces 52a and 52b of the rain channel 20 are firstly viewed from above (FIG. 7). Is attached so as to be inserted into the first notch 14 a and the second notch 14 b of the guide rail 10.

  FIG. 8A is a plan view showing the state of the elastic piece 51 when the clamping piece 52 is inserted into the notch as described above. At this time, the distal end portion of the elastic piece 51 is elastically deformed outward from the state before deformation indicated by a two-dot chain line, and comes into contact with the first restriction surface 41a. That is, the distal end portion of the elastic piece 51 urges the first restricting portion 41 inward by a restoring force.

  Then, when the rain channel 20 is slid rearward from the state shown in FIG. 8A, the second engagement surface 51b of the elastic piece 51 becomes the first restricting portion as shown in FIG. 8B. The first engaging surface 51a of the elastic piece 51 contacts the first restricting surface 41a of the first restricting portion 41 by the restoring force. That is, the rain channel 20 is engaged.

  Further, even when the first engaging surface 51a and the first restricting surface 41a come into contact with each other, the elastic piece 51 is slightly elastically deformed. For this reason, in a state where the rain channel 20 is attached to the guide rail 10, the elastic piece 51 urges the first restricting portion 41 inward by a restoring force.

  In the engaged state shown in FIG. 8B, the first restricting portion 41 is brought into contact with the second restricting surface 41b of the first restricting portion 41 and the second engaging surface 51b of the elastic piece 51. The movement of the elastic piece 51 in the forward direction is restricted. Furthermore, as shown in FIG. 9, in the engaged state, the second regulating portion 42 regulates the backward movement of the clamping piece 52 by the second regulating portion 42 and the clamping piece 52 coming into contact with each other. Thus, in the engaged state, the restricting portion 40 (the first restricting portion 41 and the second restricting portion 42) sandwiches the engaging portion 50 (the elastic piece 51 and the sandwiching piece 52) in the front-rear direction.

  Furthermore, as shown in FIG. 9, in the engaged state, the second restricting portion 42 is sandwiched in the vertical direction by the support portion 53 and the convex portion 521 of the sandwiching piece 52.

As described so far, according to the sunroof device 100 of the present embodiment, the following effects can be obtained.
In the engaged state, each of the pair of elastic pieces 51 (first engagement surface 51a) biases each of the pair of first restriction portions 41 (first restriction surface 41a) inward. For this reason, shakiness in the width direction of the rain channel 20 with respect to the guide rail 10 can be suppressed.
In the engaged state, the restricting portion 40 (the first restricting portion 41 and the second restricting portion 42) holds the engaging portion 50 (the elastic piece 51 and the holding piece 52) in the front-rear direction. For this reason, the backlash of the rain channel 20 with respect to the guide rail 10 in the front-rear direction can be suppressed.
In the engaged state, the engaging portion 50 (the support portion 53 and the holding piece 52) holds the restriction portion 40 (second restriction portion 42) in the vertical direction. For this reason, shakiness of the rain channel 20 in the vertical direction with respect to the guide rail 10 can be suppressed.
As described above, rattling of the rain channel 20 in the width direction, the front-rear direction, and the up-down direction with respect to the guide rail 10 is suppressed by the restricting portion 40 and the engagement 50. That is, by causing the elastic piece 51 and the holding piece 52 to protrude from the support portion 53 of the engagement 50, the three-dimensional rattling of the rain channel 20 can be suppressed.
The restricting portion 40 is provided on the fourth wall 14 on the vehicle inner side than the drainage groove 15a of the guide rail 10. For this reason, it is not necessary to provide the guide rail 10 with an engaging portion for attaching the rain channel 20 to the vehicle outer side than the first wall 11. As a result, the sunroof device 100 can be prevented from being enlarged in the width direction.
The engaging portion 50 of the rain channel 20 is formed integrally with the main body portion 21 and the guide portion 22. For this reason, the sunroof device 100 can be easily assembled in that the rain channel 20 and the engaging portion 50 need not be provided separately.
The restricting portion 40 can be formed simply by cutting the upper flange 142 of the fourth wall 14 into a rectangular shape. For this reason, the restricting portion 40 can be provided by a molding machine having a simple structure.
The insertion portion 221 and the first wall 11 of the guide portion 22 and the insertion portion 221 and the second wall 12 of the guide portion 22 are spaced apart. For this reason, it can suppress that at least one of the insertion part 221 and the 1st wall 11 and the 2nd wall 12 contacts or leaves | separates by the vibration at the time of vehicle travel. As a result, abnormal noise due to contact between the insertion portion 221 and the first wall 11 and the second wall 12 during vehicle travel can be suppressed.

In addition, you may change the said embodiment as shown below.
The elastic piece 51 of the engagement portion 50 on the right side of the vehicle urges the guide rail 10 on the right side of the vehicle outward, and the elastic piece 51 of the engagement portion 50 on the left side of the vehicle applies the guide rail 10 on the left side of the vehicle in the outward direction. It is good also as a structure which suppresses the shakiness of the width direction of the rain channel 20 by energizing.
-You may replace the protrusion direction of the elastic piece 51 and the clamping piece 52 in the front-back direction.
-It is good also as a structure which clamps a 2nd control part by the support part 53 contacting the 2nd control part 42 from the downward direction, and the clamping piece 52 contact | abutting the 2nd control part 42 from the upper direction.
-The clamping piece 52 should just be provided at least 1 each in a pair of engaging part 50, respectively.
-The regulation part 40 does not necessarily need to be provided in the 4th wall 14, and should just be formed inside a vehicle rather than the drainage groove 15a. That is, the restricting portion 40 may be provided on the second wall 12 or on the third wall 13.
The method of forming the restricting portion 40 may be other than the method of press-molding the upper flange 142 of the guide rail 10. For example, the upper flange 142 may be formed by cutting, or a member corresponding to the restricting portion 40 may be separately manufactured and coupled to the guide rail 10.
The engaging portion 50 of the rain channel 20 may be separate from the main body portion 21 and the guide portion 22.
The guide portion 22 may be in contact with at least one of the first wall 11 and the second wall 12 in a state where the rain channel 20 is attached to the guide rail 10.
-You may form the 1st control part 41 in a concave shape by the 1st control surface 41a and the 2nd control surface 41b. In this case, the elastic piece 51 is preferably formed in a convex shape by the first engagement surface 51a and the second engagement surface 51b.

  DESCRIPTION OF SYMBOLS 100 ... Sunroof apparatus for vehicles, 110 ... Roof of vehicle, 10 ... Guide rail, 11 ... 1st wall (1st drainage wall), 12 ... 2nd wall (2nd drainage wall), 15a ... Drainage groove, DESCRIPTION OF SYMBOLS 20 ... Rain channel, 21 ... Main-body part, 22 ... Guide part, 221 ... Insertion part, 30a ... Opening part, 40 ... Control part, 41 ... 1st control part, 41a ... 1st control surface, 41b ... 2nd control surface , 42 ... second restricting part, 50 ... engaging part, 51, elastic piece (first engaging part), 51a ... first engaging surface, 51b ... second engaging surface, 52 ... clamping piece (second engaging part) Joint).

Claims (5)

A pair of guide rails provided at both ends in the vehicle width direction of the opening formed in the roof of the vehicle;
A vehicle sunroof device comprising a rain channel that bridges the pair of guide rails in the vehicle width direction,
The rain channel has a pair of guide portions that guide the liquid flowing in the longitudinal direction of the rain channel to the guide rail, and a pair of engagement portions that engage with the pair of guide rails,
The guide rail includes a drainage wall that forms a drainage groove that receives the liquid guided from the guide unit, and a regulation unit that engages with the engagement unit to regulate movement of the rain channel. And
The said control part is a vehicle sunroof apparatus provided in the vehicle width direction inside rather than the said drain groove. The restricting portion includes a first restricting portion and a second restricting portion provided at intervals in the vehicle front-rear direction,
The rain channel includes a first engagement portion in which a base end is cantilevered and a distal end is provided with an elastic piece that engages with the first restriction portion, and a second engagement that engages with the second restriction portion. And having
In the state where the rain channel is attached to the guide rail,
The first engaging portion biases the first restricting portion toward the vehicle width direction by a restoring force of the elastic piece,
The vehicle sunroof device according to claim 1, wherein the first engagement portion and the second engagement portion are sandwiched between the first restriction portion and the second restriction portion in a vehicle front-rear direction. The first restricting portion is a convex portion having a first restricting surface that intersects the vehicle width direction and a second restricting surface that intersects the vehicle front-rear direction,
The vehicle according to claim 2, wherein the first engagement portion is a recess having a first engagement surface that abuts on the first restriction surface and a second engagement surface that abuts on the second restriction surface. Sunroof device. The drainage wall includes a first drainage wall provided on the outer side in the vehicle width direction, and a second drainage wall provided on the inner side in the vehicle width direction,
The lower end of the guide portion is arranged in the drainage groove in the vertical direction,
The space | interval is provided between the said guide part and the said 1st drainage wall, and a space | interval is provided between the said guide part and the said 2nd drainage wall. The vehicle sunroof device described. The vehicle sunroof device according to any one of claims 1 to 4, wherein the engagement portion is integral with the rain channel.

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