阅读说明：本技术 车辆的驾驶室后表面结构 (Rear surface structure of cab of vehicle ) 是由 榊和彦 于 2020-03-26 设计创作，主要内容包括：本公开的目的在于提供一种驾驶室后表面结构,即使在阀开口的前方的驾驶室内进深空间受到制约的情况下,其也能够抑制水从阀开口向驾驶室内的浸入。在排泄阀(1)的车宽方向两侧配置左右的遮蔽唇(40)。左右的遮蔽唇(40)各自具有被固定于驾驶室后表面(4)的唇基部(41)、以及在唇基部(41)被固定于驾驶室后表面(4)的唇安装状态下向后方突出的板状的唇主体部(42)。左右的唇主体部(42)以在唇安装状态下从车宽方向两侧遮蔽排泄阀(1)的阀开口(18)的方式在上下方向延伸。(An object of the present disclosure is to provide a cab rear surface structure that can suppress the intrusion of water into a cab from a valve opening even when the depth space in the cab in front of the valve opening is restricted. Left and right masking lips (40) are disposed on both sides of the drain valve (1) in the vehicle width direction. Each of the left and right shield lips (40) has a lip base (41) fixed to the cab rear surface (4), and a plate-shaped lip body (42) projecting rearward in a lip attachment state in which the lip base (41) is fixed to the cab rear surface (4). The left and right lip main bodies (42) extend in the vertical direction so as to cover the valve opening (18) of the drain valve (1) from both sides in the vehicle width direction in the lip attached state.)

1. A rear surface structure of a cab of a vehicle, having a drain valve provided on a rear surface of the cab opposite to a front surface of a cargo box, the drain valve having a valve opening communicating between inside and outside of the cab,

includes left and right shield lips disposed on both sides of the drain valve in the vehicle width direction,

the left and right masking lips each have: a lip base fixed to the cab rear surface; and a plate-shaped lip body portion projecting rearward in a lip attachment state in which the lip base is fixed to the rear surface of the cab,

The left and right lip main bodies extend in the vertical direction so as to cover the valve opening from both sides in the vehicle width direction in the lip attached state.

2. The cab rear surface structure of a vehicle according to claim 1,

the lip body portion is formed of an elastic material and extends obliquely rearward toward a side opposite to the valve opening, which is away from the valve opening, in the lip attached state.

3. The cab rear surface structure of a vehicle according to claim 2,

the masking lip has: an opening-reverse-side end edge portion located at an end of the lip base portion on a side opposite to the valve opening in the lip attached state; and a lip portion protruding from the opening reverse side end edge portion toward the valve opening reverse side and overlapping the cab rear surface,

the lip main body portion extends from the opening-opposing-side end edge portion,

the lip main body portion, the opening reverse side end edge portion and the small lip portion are integrally formed of an elastic material,

the lip portion in the lip attached state is held in a state of being elastically deformed rearward by abutting against the rear surface of the cab.

4. The cab rear surface structure of the vehicle according to claim 2 or claim 3,

The lip body portion is set to the following length: in the lip-mounted state, the lip-mounted state is not in contact with the front surface of the cargo box in a normal state in which the lip-mounted state is not subjected to a pressing force toward the valve opening side, and is elastically deformed by being subjected to the pressing force toward the valve opening side, so that the lip-mounted state can be brought into contact with the front surface of the cargo box.

5. The cab rear surface structure of the vehicle according to claim 4,

the tip end side of the lip body portion is inclined to the valve opening side than the base end side.

Technical Field

The present disclosure relates to a cab rear surface structure of a vehicle, which is provided with a drain valve having a valve opening communicating the inside of a cab with the outside of the cab, on a cab rear surface opposite to a cargo box front surface.

Background

Patent document 1 describes a ventilation duct provided in a cab of a truck (vehicle). In the ventilation duct, the butterfly valves of the ventilation duct main body are rotated outward to open the divided ports of the exhaust port, whereby the air in the vehicle interior is discharged to the outside of the vehicle for ventilation. A return pipe for preventing water from entering the vehicle interior is mounted on the inner side of the ventilation duct main body.

[ Prior art documents ]

[ patent document ]

Patent document 1 Japanese laid-open patent application No. 2005-75020

Disclosure of Invention

[ problem to be solved by the invention ]

In the structure of suppressing the intrusion of water by the water return pipe as in patent document 1, a space for disposing the water return pipe is required in front of the valve opening of the drain valve (ventilation duct). Therefore, in a case where the depth space in the cab in front of the valve opening is limited (for example, in a case where the depth space in the cab is narrow, or in a case where another member is disposed in the depth space in the cab), the water return pipe cannot be attached, and the intrusion of water cannot be suppressed.

Accordingly, an object of the present disclosure is to provide a cab rear surface structure that can suppress the intrusion of water into a cab from a valve opening even when the depth space in the cab in front of the valve opening is limited.

[ means for solving the problems ]

In order to achieve the above object, a first aspect of the present disclosure is a cab rear surface structure of a vehicle, in which a drain valve having a valve opening communicating between an interior of a cab and an exterior of the cab is provided on a cab rear surface facing a front surface of a cargo box, the cab rear surface structure of the vehicle including left and right shielding lips disposed on both sides of the drain valve in a vehicle width direction.

The left and right masking lips each have: a lip base fixed to a cab rear surface; and a plate-shaped lip body portion that protrudes rearward in a lip attachment state in which the lip base portion is fixed to the rear surface of the cab. The left and right lip main bodies extend in the vertical direction so as to cover the valve opening from both sides in the vehicle width direction in the lip attached state.

In the above configuration, most of the water sprayed into the valve opening in the vehicle width direction from the outside in the vehicle width direction through the space between the rear surface of the cab and the front surface of the cargo box hits the shield lip before reaching the valve opening, and therefore, the water is difficult to reach the valve opening. Therefore, when water is applied from the outside in the vehicle width direction, the ingress of water from the valve opening into the vehicle interior (the cabin) can be favorably suppressed by the left and right shield lips.

The left and right shield lips are fixed to the rear surface of the cab and project rearward, so that even when the depth space in the cab in front of the valve opening is restricted, the shield lips can suppress the entry of water.

A second aspect of the present disclosure is the cab rear surface structure of the first aspect, wherein the lip main body portion is formed of an elastic material, and extends obliquely rearward toward a side opposite to the valve opening, which is away from the valve opening, in the lip attached state.

In the above configuration, since the lip main body portion extends obliquely rearward toward the opposite side to the valve opening, the rear end side of the lip main body portion is less likely to warp toward the valve opening when the lip main body portion receives a pressing force from water toward the valve opening side. Therefore, the intrusion of water from the valve opening can be reliably suppressed.

Further, since the lip main body portion is formed of an elastic material, the front surface of the cargo box is less likely to be damaged even when the lip main body portion interferes with the front surface of the cargo box.

A third aspect of the present disclosure is the cab rear surface structure of the second aspect, wherein the shielding lip has: an opening-reverse-side end edge portion located at an end portion of the lip base portion on a side opposite to the valve opening in the lip-mounted state; and a lip portion protruding from an opening-reverse-side end edge portion toward the valve opening reverse side and overlapping the cab rear surface. The lip main body portion extends from the opening-opposing-side end edge portion. The lip main body portion, the opening reverse side end edge portion and the small lip portion are integrally formed by an elastic material. The labial minor lip portion in the labial attachment state is held in a state of being elastically deformed rearward by abutment with the rear surface of the cab.

In the above configuration, the labial minor lip portion in the labial attachment state is held in a state of being elastically deformed rearward, and therefore the shielding lip has a restoring force that causes the lip main body portion to face the opening reverse side. Therefore, the rear end side of the lip body portion can be further made less likely to warp toward the valve opening side.

A fourth aspect of the present disclosure is the cab rear surface structure of the second or third aspect, wherein the lip main body portion is set to a length: in the lip-mounted state, the lip-mounted state is not in contact with the front surface of the cargo box in a normal state where the lip-mounted state does not receive a pressing force toward the valve opening side, and the lip-mounted state can be brought into contact with the front surface of the cargo box by being elastically deformed by receiving the pressing force toward the valve opening side.

In the above configuration, when receiving a pressing force from water toward the valve opening side, the lip body portion abuts against the front surface of the cargo box, and the space between the rear surface of the cab and the front surface of the cargo box is closed by the shield lip.

When the lip main body portion comes into contact with the front surface of the cargo box from a normal time (normal state) when the lip main body portion does not receive a pressing force from water or the like, the lip main body portion may rub against the front surface of the cargo box due to vibration or the like during vehicle traveling, and damage such as paint peeling may occur on the front surface of the cargo box. In contrast, in the present aspect, the lip main body portion is separated from the front surface of the cargo box at normal times and can be brought into contact with the front surface of the cargo box when receiving a pressing force, and therefore damage such as peeling of the coating on the front surface of the cargo box due to contact with the lip main body portion can be suppressed.

A fifth aspect of the present disclosure is the cab rear surface structure of the fourth aspect, wherein the tip end side of the lip main body portion is inclined to the valve opening side more than the base end side.

In the above configuration, the tip end side (rear end side) of the lip main body portion is inclined to the opposite side of the valve opening relative to the base end side (front end side), and therefore, the tip end side of the lip main body portion can be reliably prevented from warping toward the valve opening side after coming into contact with the front surface of the cargo box by receiving a pressing force from water toward the valve opening side.

[ Effect of the invention ]

According to the present disclosure, even when the depth space in the cab in front of the valve opening is restricted, water can be prevented from entering the cab from the valve opening.

Drawings

Fig. 1 is a side view of a vehicle including a cab rear surface structure according to an embodiment of the present disclosure.

Fig. 2 is a front view of the rear surface of the cab of fig. 1 as viewed from behind.

Fig. 3 is a sectional view taken along line III-III of fig. 1.

Fig. 4 is a rear view of the drain valve of fig. 2, viewed from the front.

Fig. 5A is a sectional view of a portion a of fig. 3 viewed from the rear.

Fig. 5B is a sectional view of a portion B of fig. 4 in a state where the drain valve is attached to the cab back panel, as viewed from above.

Fig. 6 is a sectional view taken along line VI-VI of fig. 2.

Detailed Description

Next, a first embodiment of the present disclosure is explained with reference to the drawings. In the present embodiment, an example in which the drain valve 1 is provided in the cab 2 of the pickup truck will be described. In the drawings, FR indicates the vehicle front, and UP indicates the vehicle upper direction. The front-rear direction described below indicates the front-rear direction of the vehicle, and the left-right direction indicates the left-right direction in a state of facing the front of the vehicle. The vehicle provided with the drain valve 1 is not limited to a pick-up truck.

As shown in fig. 1, a front surface 6 of the bed, which stands upright in the vehicle width direction at a front end of the bed 5, faces a cab rear surface (cab outer surface) 4, which is a rear surface of the cab back panel 3, which stands upright in the vehicle width direction at a rear end of the cab 2, from behind. The drain valve 1 is attached to the cab rear surface 4 so as to be opposed to the cargo box front surface 6 from the front. In addition, hereinafter, the drain valve 1 in a state (posture) of being mounted on the cab rear surface 4 will be described.

As shown in fig. 2 to 4, the drain valve 1 is roughly composed of a valve main body 10 and a plurality of baffle plates 30(31, 32, 33), and the valve main body 10 integrally includes a housing portion 11, a pipe portion 12, two upper and lower partition plate portions 13, 14, a lattice-shaped stopper portion 15, and a water receiving portion 16.

The frame portion 11 has a rectangular frame shape, and the duct portion 12 extends in a rectangular tubular shape forward (inside the cab 2) from the inner peripheral edge of the frame portion 11. The upper and lower partition wall portions 13 and 14 are vertically opposed to each other inside the duct portion 12 and extend in the vehicle width direction, and connect inner surfaces of left and right side walls 17 of the duct portion 12. A rectangular valve opening 18 at the rear end edge of the frame portion 11. The valve opening 18 is divided into upper and lower 3 stages (an upper stage valve opening 19, a middle stage valve opening 20, and a lower stage valve opening 21) by the upper and lower partition plate portions 13, 14. Each of the valve openings 19, 20, 21 has a rectangular shape with a lateral dimension in the vehicle width direction longer than a vertical dimension in the vertical direction, and communicates the inside (vehicle interior) and the outside (vehicle exterior space between the cab rear surface 4 and the cargo box front surface 6) of the cab 2.

The stopper 15 has an upper region disposed in front of the valve opening 19 of the upper layer, a middle region disposed in front of the valve opening 20 of the middle layer, and a lower region disposed in front of the valve opening 21 of the lower layer, and each region of the stopper 15 is inclined rearward and downward (see fig. 3). The peripheral edge portions of the respective regions of the stopper 15 are fixed to the duct portion 12 and the partition portions 13 and 14, and the duct portion 12 and the partition portions 13 and 14 are reinforced, and the baffle 30 is prevented from tilting forward from the closed position in a manner described later.

The cab back panel 3 is formed with a rectangular valve attachment hole 7 (see fig. 3 and 5B) slightly larger than the outer shape of the duct portion 12 and slightly smaller than the outer shape of the frame portion 11, and the drain valve 1 is fixed to the cab back panel 3 (cab rear surface 4) by inserting the duct portion 12 into the valve attachment hole 7 from the rear (the cargo bed front surface 6 side). In the present embodiment, a total of 6 locking projections 22 (see fig. 4) of the upper and lower 2 pairs and the left and right 1 pairs are provided to protrude forward from the front surface of the upper, lower, left, and right frame portions 11 of the duct portion 12, and the drain valve 1 is fixed to the cab rear surface 4 by locking the upper, lower, left, and right locking projections 22 to the upper, lower, left, and right peripheral portions (see fig. 5B) of the valve mounting hole 7 in accordance with the insertion of the duct portion 12 into the valve mounting hole 7 of the cab rear panel 3. In this valve-mounted state, the seal 9 is interposed between the front surface of the frame portion 11 and the cab rear surface 4, and the space between the frame portion 11 and the cab rear surface 4 is sealed by the seal 9. Further, the drain valve 1 may be fixed to the cab rear surface 4 by another method (for example, fastening by a bolt or the like).

As shown in fig. 3, the water receiving portion 16 has a rectangular box shape with an upper side opened. The bottom plate 23 and the left and right side plates 24 of the water receiving portion 16 extend continuously forward from the duct portion 12, and the lower end portion of the duct portion 12 constitutes the rear end portion of the water receiving portion 16. The upper surface of the bottom plate 23 constitutes a drainage bottom surface 25, and the drainage bottom surface 25 is disposed below the partition plate portions 13 and 14 and the stopper portion 15. The drainage bottom surface 25 is inclined rearward and downward so that water can easily flow toward the valve opening 21 in the lower stage.

The flapper 30 is a thin plate-like elastic body formed of a flexible material such as rubber, and as shown in fig. 2 and 3, the flapper 31 of the upper layer is provided at the valve opening 19 of the upper layer, the flapper 32 of the middle layer is provided at the valve opening 20 of the middle layer, and the flapper 33 of the lower layer is provided at the valve opening 21 of the lower layer. The lateral dimensions of the upper and middle flaps 31, 32 in the vehicle width direction are substantially equal to the lateral dimensions of the lower flap 33, and the vertical dimensions of the upper and middle flaps 31, 32 in the vertical direction are substantially equal to the vertical dimensions of the lower flap 33.

Each of the shutters 30 is supported by the upper edge portions of the valve openings 19, 20, 21 so as to close the upper-stage valve opening 19, the middle-stage valve opening 20, and the lower-stage valve opening 21, and hangs down obliquely rearward and downward, so that displacement (tilting) forward from the closed position where the valve openings 19, 20, 21 are closed is prevented, and the shutters 30 are pushed from the front to be displaced rearward (outside the cab) at the closed position where the valve openings 19, 20, 21 are sealed, thereby opening the valve openings 19, 20, 21. In the present embodiment, as shown in fig. 5A, a locking protrusion 34 in an arrow shape in a plan view, which integrally protrudes from an upper edge portion of each baffle plate 30 (the middle baffle plate 32 in the example of fig. 5A), is inserted from below into a baffle plate locking hole 26 formed in an upper edge portion of the valve openings 19, 20, 21 (the partition plate portion 13 on the upper side in the example of fig. 5A), and the locking protrusion 34 is locked to the baffle plate locking hole 26 (a head portion of the locking protrusion 34 is locked to a peripheral edge portion of the baffle plate locking hole 26), whereby the baffle plate 30 is supported by the valve main body 10 and hangs down. Baffle locking holes 26 are arranged at 4 positions substantially at equal intervals in each layer, and each baffle 30 is supported at 4 positions. The method of supporting the upper end portion of the baffle 30 is not limited to the above, and other methods (for example, fastening by bolts, fixing by an adhesive, or the like) may be used.

In a normal state where the shutter 30 is not subjected to an external force, the shutter 30 hangs down obliquely downward along the rear surface of the stopper 15 to close the valve openings 19, 20, 21 (closed position), and the stopper 15 prevents the shutter 30 from tilting forward from the closed position. That is, the damper 30 allows air to flow from inside the cab 2 to outside the cab 2, and prevents air from moving from outside the cab 2 to inside the cab 2.

As shown in fig. 2, left and right shield lips 40 are attached to the cab rear surface 4. The left and right shield lips 40 are disposed on both sides (left and right) of the drain valve 1 in the vehicle width direction, and extend linearly in a substantially vertical direction from below a lower end of the valve opening 18 (a lower edge of the valve opening 21 in the lower stage) to above an upper end of the valve opening 18 (an upper edge of the valve opening 19 in the upper stage).

As shown in fig. 2, 3, and 6, each of the left and right shielding lips 40 includes: a flat plate-like lip base 41 fixed to the cab rear surface 4; a plate-shaped lip body 42 that protrudes rearward in a lip-mounted state in which the lip base 41 is fixed to the cab rear surface 4; an opening reverse side end edge portion 43 (see fig. 6) located at an end portion on the opposite side of the valve opening (the opposite side of the valve opening 18) of the lip base 41 in the lip attached state; and a small lip 44 (see fig. 6) projecting from the opening-reverse-side end edge portion 43 toward the opposite side of the valve opening and overlapping the cab rear surface 4; the lip main body portion 42 projects from the opening-reverse-side end edge portion 43. The lip base 41, the lip body 42, the opening-reverse-side end edge 43, and the small lip 44 of the present embodiment are integrally formed of an elastic material (for example, a rubber material such as thermoplastic elastomer (TPE)).

In a plurality of positions of the lip base 41 (in the present embodiment, at the upper, middle, and lower portions 3), the clips 50 protruding from the front surface of the lip base 41 are attached, and the clips 50 are inserted from the rear into the clip insertion holes 8 (see fig. 6) formed in the cab back panel 3 and latched to the front surface of the cab back panel 3, thereby being fixed in a state where the lip base 41 overlaps the cab back surface 4. The upper catch 50 is disposed above the upper end of the valve opening 18, and the lower catch 50 is disposed below the lower end of the valve opening 18.

The left and right lip body portions 42 extend in the vertical direction so as to cover the valve opening 18 from both sides in the vehicle width direction in the lip attached state. The lip body portion 42 extends obliquely rearward toward the opposite side of the valve opening from the valve opening 18 in the lip attached state. The lip body portion 42 is set to the following length (shown by a two-dot chain line in fig. 6): in the lip-mounted state, the lip-mounted state is not in contact with the bed front surface 6 in a normal state (shown by a solid line in fig. 6) in which the lip-mounted state does not receive a pressing force from the outside in the vehicle width direction toward the valve opening side of the valve opening 18, and the lip-mounted state can be brought into contact with the bed front surface 6 by being elastically deformed by receiving the pressing force toward the valve opening side. The lip body 42 is not flat, but is curved so that the distal end side is inclined to the opposite side of the valve opening from the proximal end side.

The lip-mounted small lip 44 is elastically displaced rearward (from the state shown by the broken line to the state shown by the solid line in fig. 6) from the state before being mounted on the cab rear surface 4 by abutting against the cab rear surface 4, and is held in this state.

The cab back panel 3 of the present embodiment has a convex-concave shape in which a convex portion protruding rearward and a concave portion recessed forward are arranged in the vehicle width direction, the lip base portion 41 is fixed to the convex portion of the cab back panel 3, and the small lip portion 44 protrudes obliquely forward along the boundary between the convex portion and the concave portion.

According to the present embodiment, a sudden increase in the air pressure in the cab 2 when the door (not shown) of the cab 2 is closed is suppressed by the outflow of air from the drain valve 1. Therefore, the closing operation of the door can be smoothly performed.

Most of the water (shown by white arrows in fig. 6) injected in the vehicle width direction toward the valve opening 18 from the outside in the vehicle width direction through between the cab rear surface 4 and the bed front surface 6 hits the shield lip 40 before reaching the valve opening 18, and thus hardly reaches the valve opening 18. Therefore, when water is applied from the outside in the vehicle width direction, the ingress of water from the valve opening 18 into the vehicle (into the cab 2) can be favorably suppressed by the left and right shield lips 40.

Since the left and right shield lips 40 are fixed to the cab rear surface 4 and project rearward, even when the cab deep space 51 (see fig. 3) in front of the valve opening 18 is restricted, the shield lips 40 can suppress the entry of water.

Since the lip main body portion 42 extends obliquely rearward toward the opposite side of the valve opening, the rear end side of the lip main body portion 42 is less likely to warp toward the valve opening when the lip main body portion 42 receives a pressing force from water toward the valve opening side. Therefore, the intrusion of water from the valve opening 18 can be reliably suppressed.

Since the lip body 42 is formed of an elastic material, the cargo box front surface 6 is less likely to be damaged even if the lip body 42 interferes with the cargo box front surface 6.

Since the small lip portion 44 in the lip attached state is held in a state of being elastically deformed rearward, the shielding lip 40 in the lip attached state has a restoring force for directing the lip main body portion 42 to the opposite side of the opening. Therefore, the rear end side of the lip body 42 can be further made less likely to warp toward the valve opening side.

When receiving a pressing force from water toward the valve opening side, the lip body portion 42 abuts against the cargo box front surface 6, and the shielding lip 40 blocks the gap between the cab rear surface 4 and the cargo box front surface 6, so that the intrusion of water from the valve opening 18 can be more favorably suppressed.

When the lip main body portion 42 comes into contact with the bed front surface 6 from a normal time (normal state) where the lip main body portion 42 does not receive a pressing force from water or the like, the lip main body portion 42 may rub against the bed front surface 6 due to vibration or the like during vehicle traveling, and damage such as paint falling may occur on the bed front surface 6. In contrast, the lip main body 42 of the present embodiment is normally spaced apart from the cargo box front surface 6 and can be brought into contact with the cargo box front surface 6 when receiving a pressing force, and therefore damage such as paint peeling of the cargo box front surface 6 due to contact with the lip main body 42 can be suppressed.

Further, since the tip end side (rear end side) of the lip body portion 42 is inclined to the valve opening side than the base end side (front end side), the tip end side of the lip body portion 42 can be reliably prevented from being warped toward the valve opening side after coming into contact with the cargo box front surface 6 by receiving the pressing force from the water toward the valve opening side.

The present disclosure has been described above based on the above embodiments, but the present disclosure is not limited to the above embodiments, and it goes without saying that the present disclosure can be appropriately modified without departing from the scope of the present disclosure. That is, it is needless to say that other embodiments, examples, operation techniques, and the like obtained by those skilled in the art based on the embodiments are all included in the scope of the present disclosure.

For example, in the above-described embodiment, the description has been given of the case where the valve openings 19, 20, 21 are arranged in three layers, but the valve openings may be one layer or may be a plurality of layers other than three layers. Further, although the description has been given of the case where the valve openings 19, 20, 21 of the three layers have substantially the same shape, the shape of the valve opening may be different between the layers.

In the above embodiment, the example in which the lip base 41, the lip main body portion 42, the opening opposite side end edge portion 43, and the small lip portion 44 are integrally formed by the elastic material has been described, but the form of the shielding lip 40 is not limited to this. For example, the lip base portion, the lip main body portion, the opening reverse side end edge portion, and the small lip portion may be integrally formed of an inelastic material (for example, a hard resin), or the lip base portion may be formed of an inelastic material, and the lip main body portion, the opening reverse side end edge portion, and the small lip portion may be integrally formed of an elastic material and fixed to the lip base portion.

The present application is based on the japanese patent application (japanese application 2019-066109) filed on 29/3/2019, the contents of which are hereby incorporated by reference.

[ Industrial Applicability ]

The present disclosure can be widely applied to a vehicle in which a drain valve is provided on a rear surface of a cab opposite to a front surface of a cargo box.

[ description of reference numerals ]

1: drain valve

2: driver's cabin

3: cab back panel

4: cab rear surface (outside cab)

5: packing box

6: front surface of cargo box

7: valve mounting hole

8: fastener insertion hole

9: sealing element

10: valve body

11: frame body part

12: pipe section

13. 14: partition plate part

15: stopper part

16: water receiving part

17: side wall of the pipe section

18. 19, 20, 21: valve opening

22: locking projection

23: bottom plate of water receiving part

24: side plate of water receiving part

25: bottom for drainage

26: baffle plate clamping hole

30. 31, 32, 33: baffle plate

34: locking protrusion

40: shielding lip

41: lip base

42: lip body part

43: opening reverse side end edge part

44: small lip

50: buckle

51: deep space in cab