JP2019018617A - Washer tank - Google Patents

Abstract

To provide a washer tank which inhibits liquid leakage from an inlet.SOLUTION: A washer tank is mounted on a cabin of a vehicle in which the cabin can be inclined a predetermined angle from a normal position and includes: a tank body part 10 having a storage chamber R for storing a windshield washer W and an inlet 13 for introducing the liquid into the storage chamber R. The tank body part 10 has a restriction rib 15 which restricts movement of the windshield washer W to the inlet 13 side while inclined the predetermined angle.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a washer tank.

2. Description of the Related Art Conventionally, in a vehicle, a washer tank having a storage chamber for storing a washer liquid is known (see, for example, Patent Document 1).
The washer tank of Patent Document 1 is provided with a cylindrical partition for forming an air reservoir inside, and the washer liquid is prevented from entering the partition by the air pressure generated by the air in the partition. By changing the protruding amount of the partition wall and changing the volume in the partition wall, it becomes possible to change the storage amount of the washer liquid without changing the liquid level position when the washer tank is full. ing.

JP 2005-239087 A

  By the way, a washer tank may be provided in a cabin of a vehicle in which a cabin (cabinet) is tilted by a tilt mechanism, for example. At this time, when the cabin is tilted, the washer tank provided in the cabin is also tilted in the same manner. As a result, the washer liquid may leak from the inlet of the washer tank.

  The present invention has been made to solve the above-described problems, and an object thereof is to provide a washer tank that suppresses liquid leakage from an inlet.

  A washer tank that solves the above-described problem is mounted on the cabin of a vehicle that can tilt the cabin at a predetermined angle from a normal position, and introduces liquid into the storage chamber and the storage chamber. A washer tank having a tank body having an inlet, the tank body having a restricting portion that restricts movement of the liquid toward the inlet in a state where the tank body is tilted to the predetermined angle.

  According to this configuration, since the tank main body portion has the restricting portion that restricts the movement of the liquid to the inlet side in a state where the tank main body portion is inclined at a predetermined angle, liquid leakage from the inlet during the inclination can be suppressed.

  In the washer tank, the restricting portion is a rib extending from the inner surface of the tank main body, and restricts the liquid surface of the liquid when tilted to the predetermined angle to restrict the movement of the liquid to the inlet side. It is preferable to do.

  According to this configuration, since the restricting portion is configured by the rib extending from the inner surface of the tank main body portion, it is not necessary to provide a separate member, so that an increase in the number of components can be suppressed.

  The said washer tank WHEREIN: The said tank main-body part has a bottomed cylindrical 1st and 2nd tank member, and is liquid-tightly joined in the state which made the opening part of this 1st and 2nd tank member face each other. The first tank member has a tubular portion and an upper wall that closes an end of the tubular portion, and the inlet is relatively above the second tank member. Provided in the first tank member located, and the restricting portion extends in a direction parallel to a direction in which the cylindrical portion extends, and surrounds the opening on the storage chamber side of the inlet together with the cylindrical portion. It is preferred that

  According to this configuration, since the restricting portion is configured to extend in a direction parallel to the extending direction of the cylindrical portion, when the first tank member is molded with the mold, the die releasing direction of the restricting portion is the cylindrical portion. And can be in the same direction. That is, the restricting portion can be easily formed.

  In the washer tank, it is preferable that the restricting portion has a notch portion that is positioned on the lower side in the vertical direction within the restricting portion when the predetermined angle is tilted.

  According to this configuration, when the liquid such as the washer liquid is allowed to flow from the inlet into the washer tank, the cutout portion is provided, so that a reduction in the amount of liquid stored in the washer tank by the restricting portion can be suppressed. In addition, since the notch is positioned on the lower side in the vertical direction within the restricting portion when tilted by a predetermined angle, the liquid level is adjusted at the upper portion by the restricting portion, so that the liquid movement to the inlet side is restricted. The influence can be suppressed.

  In the washer tank, the inlet is provided with a cap that closes the opening of the inlet, and the cap is disposed inside the cap main body with a cap main body having a vent hole and the cap. A packing having a communication part capable of communicating the vent hole of the main body part and the tank main body part, and the communication part is less than a liquid level of the liquid regulated by the regulation part when tilted by the predetermined angle. Is also preferably provided on the upper side in the vertical direction.

  According to this configuration, the communication portion is provided above the liquid level of the liquid restricted by the restriction portion when the predetermined angle is tilted, so that leakage of liquid from the communication portion to the outside can be suppressed. .

  According to the washer tank of the present invention, liquid leakage from the inlet can be suppressed.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram of a vehicle including a washer tank according to an embodiment, (a) is a schematic configuration diagram of a vehicle in a state where a cabin is in a normal position, and (b) is a state where the cabin is tilted by a predetermined angle. 1 is a schematic configuration diagram of a vehicle. It is a schematic block diagram of the washer tank in one Embodiment. It is a partial expanded sectional view of the washer tank in the embodiment. It is a partial expanded sectional view of the washer tank in the embodiment. It is a perspective view which shows a part of 1st tank member of the washer tank in the same embodiment. It is a top view of the 1st tank member of the washer tank in the embodiment. It is a top view of the cap of the washer tank in the embodiment. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7. FIG. 9 is a cross-sectional view taken along line 9-9 in FIG. 7. It is explanatory drawing for demonstrating the state which tilted the washer tank by the predetermined angle in the same embodiment. It is explanatory drawing for demonstrating the state which tilted the washer tank by the predetermined angle in the same embodiment.

Hereinafter, an embodiment of the washer tank will be described.
As shown in FIGS. 1 (a) and 1 (b), the washer tank 1 of the present embodiment is provided below the cabin C1 of a vehicle (truck) C having a tilt mechanism for tilting the cabin (cabinet) C1, for example. It is. That is, the washer tank 1 is similarly tilted at a predetermined angle when the cabin C1 is tilted at a predetermined angle by the tilt mechanism. In the following description, the front glass FG side in the cabin C1 will be described as the front, and the anti-front glass FG side will be described as the rear. Further, the description will be made assuming that the upper side in the vertical direction is the upper side and the lower side in the vertical direction is the lower side.

  As shown in FIG. 1B, the angle at which the cabin C1 is tilted by the tilt mechanism, that is, the angle at which the washer tank 1 is tilted (predetermined angle) is the angle at which the cabin is not tilted (hereinafter referred to as the normal position). A range of 45 to 60 degrees is assumed when the angle) is 0 degrees. Note that the angle at which the cabin C1 is tilted by the tilt mechanism varies depending on the vehicle type, and thus does not necessarily have to be in the above-described range. In the following description, the washer tank 1 will be described as being in the normal position angle unless otherwise specified.

  The washer tank 1 is made of, for example, a resin material such as polypropylene, and is for storing a washer liquid W (see FIG. 10) supplied to a windshield FG, a rear glass, a headlight, an outside camera, and the like of the vehicle C.

  As shown in FIG. 2, the washer tank 1 has a tank main body 10 and a cap 20. The tank main body 10 includes a first tank member 11 positioned relatively upward and a second tank member 12 positioned relatively downward. That is, the first tank member 11 is disposed on the upper side in the vertical direction of the second tank member. Further, the second tank member 12 is disposed on the lower side in the vertical direction of the first tank member 11. The washer tank 1 is provided with an attachment portion (not shown), and is attached to the vehicle at the attachment portion.

  Both the first and second tank members 11 and 12 have a substantially bottomed cylindrical shape, with the openings 11a and 12a of the tank members 11 and 12 facing each other on the outer periphery of the openings 11a and 12a. The flange portions 11b and 12b that are formed to extend are joined in a liquid-tight manner over the entire circumference by heat welding or the like. Thereby, the space formed inside by the first and second tank members 11 and 12 becomes a storage chamber R for storing the washer liquid W. In the present embodiment, the second tank member 12 has a substantially bottomed cylindrical shape that is deeper in the vertical direction than the first tank member 11 (has a length in the vertical direction).

The first tank member 11 is provided so as to be positioned relatively higher than the second tank member 12.
The first tank member 11 has a substantially bottomed cylindrical shape having a cylindrical portion 11c that constitutes a side wall and an upper wall 11d that closes an end of the cylindrical portion 11c opposite to the opening 11a side. There is no. In other words, the cylindrical portion 11c extends from the peripheral edge of the upper wall 11d in a direction orthogonal to the upper wall 11d.

  The first tank member 11 is provided with an inlet 13 on the front side of the upper wall 11d positioned relatively on the upper side. The inlet 13 is formed so that the opening direction faces forward and upward. More specifically, the inlet 13 is configured to extend upward from the upper wall 11d and to tilt forward approximately 45 degrees from the middle position.

  As shown in FIGS. 2 and 3, the inlet 13 has a flange portion 13 b that extends radially outward in an opening portion 13 a on the tip side. A cap 20, which will be described later, is attached to the opening 13a on the distal end side of the inlet 13 so as to close the opening 13a.

  The upper wall 11d is provided with a cylindrical cylindrical partition wall 14 extending downward from the inner surface 11e. The cylindrical partition wall 14 is provided so that a space Rx is generated in the first tank member 11 that is the upper part of the washer tank 1. Due to the cylindrical partition wall 14, the washer liquid W is not filled in the space Rx even when the washer liquid is poured into the washer tank 1 (reservoir chamber R). Therefore, the volume expansion at the time of freezing of the washer liquid W can be absorbed (allowed) in the space Rx, and the deformation and cracking of the washer tank 1 can be prevented.

  As shown in FIGS. 3 to 6, a regulating rib extending from the inner surface of the first tank member 11 (tank body 10) around the opening 13 c on the proximal end side (storage chamber R side) of the inlet 13. 15 is provided. The restriction rib 15 is formed to extend from the inner surface 11e of the upper wall 11d and the inner surface 11f of the cylindrical portion 11c. At this time, the restriction rib 15 is provided closer to the opening 13 c of the inlet 13 than the cylindrical partition wall 14. Moreover, the extension direction from the upper wall 11d of the regulation rib 15 is parallel to the direction (vertical direction) in which the cylindrical part 11c extends. Therefore, when the first tank member 11 is molded, the cylindrical part 11c and the regulating rib 15 have the same die-cutting direction (vertical direction), so that the regulating rib 15 can be easily formed. It has become.

  The lower surface which is the front end side in the extending direction of the regulating rib 15 is set on the upper side (upper wall 11d side) than the flange portion 11b on the lower surface side of the cylindrical portion 11c. Moreover, the lower surface which is the extension direction front end side of the regulation rib 15 is set below the lower surface of the said cylindrical partition wall 14 (2nd tank member 12 side).

  As shown in FIGS. 5 and 6, the regulation rib 15 is configured to be substantially L-shaped when the first tank member 11 is viewed from below, and surrounds the opening 13 c with the inner surfaces 11 e and 11 f. It has become.

  As shown in FIGS. 10 and 11, the restriction rib 15 configured as described above is formed on the liquid level W1 of the washer liquid W in the inlet 13 by the rear lower end 15a when the washer tank 1 is tilted by a predetermined angle. The rise will be regulated.

  As shown in FIGS. 4 to 6, the regulation rib 15 is provided with a notch 15 b in front of it (close to the opening direction of the inlet 13). Thus, by providing the notch 15b, a decrease in the amount of the washer fluid W stored in the washer tank 1 due to the restriction rib 15 at the normal position can be suppressed. Further, since the position where the notch portion 15b is provided is the front, when the washer tank 1 is tilted by a predetermined angle, the notch portion 15b is positioned relatively lower in the restriction rib 15, and therefore the lower end of the rear portion of the restriction rib 15 The influence at the time of regulating the liquid level W1 of the washer liquid W in the inlet 13 can be suppressed by 15a.

As shown in FIGS. 7 to 9, the cap 20 includes a cap body portion 21 and a packing 22.
The cap body portion 21 has a substantially bottomed cylindrical shape having a cylindrical portion 23 having an engaging claw engaged with the flange portion 13 b of the inlet 13 and a bottom portion 24 provided on one end side of the cylindrical portion 23. It is comprised so that it may make. Further, the cap main body portion 21 is provided on the outer periphery of the cylindrical portion 23 with a hinge portion 23a extending radially outward from the outer peripheral surface of the cylindrical portion 23, and an operation extending radially outward from the outer peripheral surface of the cylindrical portion 23. Part 23b. The hinge portion 23a is attached in the vicinity of the opening portion 13a of the inlet 13 so that the cap 20 can be opened and closed. The operation portion 23b is provided on the opposite side of the hinge portion 23a and the cylindrical portion 23 in the circumferential direction approximately 180 degrees.

  The bottom portion 24 is formed with a locking projection 24 a that protrudes in the direction perpendicular to the bottom portion 24 at the center thereof. The bottom portion 24 is formed with a vent hole 24b that can penetrate and vent in a direction substantially perpendicular to the bottom portion 24 at a position shifted from the locking projection 24a. In the present embodiment, the vent hole 24b is provided in the bottom portion 24 between the locking projection 24a and the hinge portion 23a. The vent hole 24b is provided closer to the hinge portion 23a (cylindrical portion 23) than the locking projection 24a.

  As shown in FIGS. 7 to 9, the packing 22 is configured to have a disk shape that follows the shape of the bottom 24 of the cap body 21. A locking hole 22 a corresponding to the locking protrusion 24 a is formed in the center of the packing 22. The packing 22 is held by the cap main body 21 in a state in which the packing 22 is prevented from coming off by a restriction piece 24c at the tip of the locking projection 24a inserted into the locking hole 22a.

  The packing 22 has a slit 22b as a communication portion. The slit 22b is displaced approximately 90 degrees in the circumferential direction with respect to the vent hole 24b of the cap main body 21 in a state where the packing 22 is attached to the cap main body 21. As a result, the packing 22 is disposed on the cap body 21 so that the slit 22b has a maze structure with respect to the vent hole 24b. In the present embodiment, the slit 22b is provided closer to the radially outer end of the packing 22 than the center of the packing 22 (locking hole 22a).

Next, the operation of the washer tank 1 of this embodiment will be described.
In the washer tank 1 of this embodiment, the washer liquid W is stored in the storage chamber R composed of the first and second tank members 11 and 12. The washer tank 1 is connected to a washer pump (not shown) and can supply washer liquid to the windshield and the like via the washer pump.

  When the washer tank 1 is tilted at a predetermined angle from the normal position as the cabin C1 is tilted, the washer liquid W in the washer tank 1 moves following the shape of the storage chamber R in the washer tank 1. At this time, the rise of the liquid level W <b> 1 of the washer liquid W in the inlet 13 is restricted by the restriction rib 15 provided in the vicinity of the inlet 13. The position of the liquid level W1 regulated by the regulating rib 15 is positioned below the slit 22b of the packing 22 in the vertical direction, and liquid leakage from the slit 22b is suppressed. Thereby, the liquid leakage from the inlet 13 (opening part 13a) is suppressed.

Next, the effect of this embodiment will be described.
(1) Since the tank main body 10 has the regulation rib 15 that regulates the movement of the washer fluid W toward the inlet 13 in a state where the tank body 10 is tilted at a predetermined angle, liquid leakage from the inlet 13 during tilting can be suppressed.

  (2) Since the restricting portion is configured by the restricting rib 15 extending from the inner surface of the tank main body portion 10, it is not necessary to provide another member, so that an increase in the number of parts can be suppressed.

  (3) Since the restriction rib 15 is configured to extend in a direction parallel to the direction in which the cylindrical portion 11c of the first tank member 11 extends, the restriction rib 15 is formed when the first tank member 11 is molded with a mold. The die cutting direction can be the same direction as the cylindrical portion 11c. That is, the regulation rib 15 can be easily formed.

  (4) When the washer liquid W (liquid) is allowed to flow from the inlet 13 into the washer tank 1, the notch 15b is provided in the restriction rib 15, so that the washer liquid W in the washer tank 1 by the restriction rib 15 is reduced. A decrease in the storage amount can be suppressed. Further, since the notch 15b is positioned relatively lower in the vertical direction in the canopy regulating rib 15 when tilted by a predetermined angle, the liquid level W1 is adjusted at the upper portion by the regulating rib 15 to the inlet 13 side. The influence of restricting the movement of the washer liquid W can be suppressed.

  (5) Since the slit 22b is provided above the liquid surface W1 of the washer liquid W regulated by the regulating rib 15 when the predetermined angle is tilted, leakage of the washer liquid W from the slit 22b can be suppressed.

  (6) For example, when maintaining the position of the liquid level W1 in the inlet 13 when tilting by a predetermined angle, it is necessary to increase the extension length of the regulating rib 15 as the regulating rib 15 is separated from the inlet 13. Therefore, in this embodiment, since the restriction rib 15 is provided in the vicinity of the inlet 13, the extension length of the restriction rib 15 can be shortened.

  (7) Since the packing 22 is arranged in the cap body 21 so that the slit 22b has a maze structure with respect to the vent hole 24b, even if the washer liquid W leaks from the slit 22b, Leakage from the vent hole 24b is suppressed by the maze structure.

In addition, you may change the said embodiment as follows.
In the above embodiment, a configuration in which the regulation rib 15 extends downward from the upper wall 11d as the regulation part is adopted, but the present invention is not limited to this. For example, it is good also as a structure which show | plays the effect similar to the control rib 15 by curving the shape of the upper wall 11d.

  In the above-described embodiment, the extending direction of the regulation rib 15 is configured to be parallel (same direction) as the extending direction of the cylindrical portion 11c, but is not limited thereto, and extends in a direction intersecting with the cylindrical portion 11c. It is good also as a structure. For example, when the position of the liquid level W1 in the inlet 13 is maintained when tilting at a predetermined angle, the extending length of the regulating rib is shortened by tilting the regulating rib forward from the extending direction of the cylindrical portion 11c. Can do.

  In the above embodiment, the restriction rib 15 is substantially L-shaped when the first tank member 11 is viewed from below, but is not limited thereto, and the restriction rib 15 and each inner surface are not limited to this. 11e and 11f should just be comprised so that the opening part 13c may be enclosed. For example, when the first tank member 11 is viewed from below, the restriction rib may be configured to have a substantially U shape that opens forward.

  In the above embodiment, the packing 22 has the slit 22b as the communication portion. However, the present invention is not limited to this, and the packing 22 only needs to have the communication portion. Here, the communication part allows communication between the vent hole 24b of the cap main body part 21 and the tank main body part 10 (reservoir chamber R), and may be a notch or a through hole.

  In the above embodiment, the slit 22b is configured to be positioned above the liquid surface W1 of the washer liquid W regulated by the regulating rib 15 when tilted by a predetermined angle. However, the present invention is not limited to this. For example, the slit 22b may be positioned below the liquid level W1 in the vertical direction, and the vent hole 24b of the cap body portion 21 may be positioned above the liquid level W1 in the vertical direction. That is, at least one of the slit 22b and the vent hole 24b may be configured to be positioned above the liquid level W1 in the vertical direction. Thereby, the liquid leakage from the inlet 13 can be suppressed.

  In the above-described embodiment, the labyrinth structure in which the position of the slit 22b is shifted by approximately 90 degrees in the circumferential direction with respect to the position of the vent hole 24b is not limited to this. For example, a structure in which the position of the slit 22b and the position of the vent hole 24b are the same in the circumferential direction may be employed. Further, the position of the slit 22b may be shifted by approximately 180 degrees in the circumferential direction with respect to the position of the vent hole 24b.

  -In above-mentioned embodiment, although it was set as the structure which provides the inlet 13 in the front, you may employ | adopt the structure which provides the inlet 13 not only in this but back. Moreover, although the opening direction of the inlet 13 is set to face forward, the direction is not limited to this, and the direction can be arbitrarily changed depending on the arrangement structure in the vehicle C.

  -You may combine the said embodiment and each modification suitably.

DESCRIPTION OF SYMBOLS 1 ... Washer tank, 10 ... Tank main-body part, 11 ... 1st tank member, 11a ... Opening part, 11c ... Cylindrical part, 11d ... Upper wall, 11e ... Inner surface, 12 ... 2nd tank member, 12a ... Opening part, DESCRIPTION OF SYMBOLS 13 ... Inlet, 13a, 13c ... Opening part, 15 ... Restriction rib (regulation part), 15b ... Notch part, 20 ... Cap, 21 ... Cap main-body part, 22 ... Packing, 22b ... Slit (communication part), 24b ... Vent, C ... vehicle, R ... reservoir chamber, C1 cabin, W ... washer liquid (liquid), W1 liquid level.

Claims (5)

The cabin is mounted on the cabin of a vehicle capable of tilting from a normal position by a predetermined angle, and includes a tank body having a storage chamber for storing liquid therein and an inlet for introducing liquid into the storage chamber. A washer tank,
The washer tank, wherein the tank main body has a restricting portion that restricts the movement of the liquid toward the inlet side in a state where the tank main body is tilted to the predetermined angle. The washer tank according to claim 1,
The restricting portion is a rib extending from the inner surface of the tank main body, and restricts the liquid surface when tilted to the predetermined angle to restrict the movement of the liquid to the inlet side. Washer tank to do. The washer tank according to claim 2,
The tank main body has bottomed cylindrical first and second tank members, and is joined in a liquid-tight manner with the openings of the first and second tank members facing each other.
The first tank member has a tubular portion and an upper wall that closes an end of the tubular portion,
The inlet is provided in the first tank member positioned relatively above the second tank member,
The washer tank, wherein the restricting portion is provided so as to extend in a direction parallel to a direction in which the cylindrical portion extends and to surround an opening of the inlet on the storage chamber side together with the cylindrical portion. The washer tank according to claim 2 or 3,
2. The washer tank according to claim 1, wherein the restricting portion has a notch portion that is positioned on the lower side in the vertical direction within the restricting portion when the predetermined angle is tilted. The washer tank according to any one of claims 2 to 4,
The inlet is provided with a cap for closing the opening of the inlet,
The cap includes a cap main body portion having a vent hole, and a packing having a communication portion disposed inside the cap main body portion and capable of communicating the vent hole of the cap main body portion with the tank main body portion. Have
The washer tank, wherein the communication part is provided above the liquid level of the liquid regulated by the regulating part when the predetermined angle is tilted.