JP5380087B2 - Reservoir tank - Google Patents

Description

  The present invention relates to an improvement of a cooling water storage reservoir tank connected to a radiator.

  A conventional reservoir tank is known which is disposed above a radiator and connected to the radiator by piping (for example, see Patent Document 1).

According to FIG. 4 of Patent Document 1, the reservoir tank 23 is connected to the radiator 20 via a reservoir pipe joint 21 and a communication tube 22.
The reservoir tank 23 is provided with a water supply port 23c at the top, and the water supply port 23c is closed with a cap.

JP 11-91668 A

An example of a cap that closes the water supply port 23c of the reservoir tank 23 will be described with reference to FIG.
As shown in FIG. 9, the cap 100 includes a rubber cap body 101 attached to the water supply port of the reservoir tank and a level gauge 102 attached to the cap body 101.

The cap body 101 has a function of ensuring a sealing property between the water supply port and the cap 101 when the cap 100 is attached to the water supply port of the reservoir tank.
The cap body 101 includes a disc-shaped portion 103 and a radially projecting piece 104 that integrally projects radially outward from the outer peripheral portion of the disc-shaped portion 103.
The radially projecting piece 104 is a portion that is gripped by hand when the cap 100 is removed from the reservoir tank.

  The disc-like portion 103 has a thick central portion and is provided with a fitting hole portion 106 into which the level gauge 102 is fitted, and an annular protruding portion 107 that integrally protrudes radially inward is formed at the periphery. . The annular projecting portion 107 is a portion that engages with an engaging portion provided on the water supply port side of the reservoir tank.

  When the cap 100 is attached to the water supply port of the reservoir tank, it is necessary to confirm whether or not the annular protrusion 107 and the water supply port engaging portion are securely engaged.

  An object of the present invention is to provide a reservoir tank having a cap that can easily and reliably engage with a water supply port side while having a function of supporting a level gauge while ensuring sealing performance with a water supply port. There is to do.

The invention according to claim 1 is a reservoir in which a cylindrical water supply port for containing cooling water is formed, a cap is fitted into the water supply port, and a level gauge for confirming the amount of cooling water inside is attached to the cap. In the tank, a screw is formed on the outer peripheral surface of the water supply port, a female screw is formed on the inner peripheral surface of the cap, and the water is supplied when the cap is screwed to the water supply port on the inner peripheral portion of the cap. sealing member to seal between the mouth of the opening and the cap are engaged, the level gauge in the seal member is supported, the sealing member is large flange portion outer diameter is formed than the other part, the cap, It is a bottomed cylindrical member consisting of a bottom part and a peripheral wall part extending from the outer peripheral part of the bottom part. On the inner surface of the peripheral wall part, a female screw and an annular groove provided at a position closer to the bottom part than the female screw are formed. This ring The flange portion of the seal member engages with the groove portion, and the seal member is provided in the thick portion provided for attaching the level gauge and the upper peripheral portion of the thick portion, and has a larger outer diameter than other portions. The seal member has an upper large-diameter hole that opens to the upper surface provided in the thick-walled portion, a narrowed gauge fitting hole below this, and a large-diameter hole below this In the level gauge, the end flange is fitted into the hole of the seal member, the lower annular recess is fitted into the gauge fitting hole, and the lower annular projection is fitted into the large-diameter hole. It is characterized by supporting the level gauge .

  Since the seal member is engaged with the inner periphery of the cap and the level gauge is supported by this seal member, the cap can be secured by screwing the female screw of the cap to the male screw formed on the outer peripheral surface of the water supply port. It is easily attached to the water supply port, and a seal member seals between the opening of the water supply port and the cap. In addition, the level gauge can be easily supported.

Further, the present invention is a bottomed tubular member in which a flange portion having an outer diameter larger than that of other portions is formed on the seal member, and the cap includes a bottom portion and a peripheral wall portion extending from the outer peripheral portion of the bottom portion. A female screw and an annular groove provided at a position closer to the bottom than the female screw are formed on the inner surface of the peripheral wall, and the flange of the seal member is engaged with the annular groove.

  As an action, the flange of the seal member is engaged with the annular groove formed on the inner surface of the peripheral wall portion of the cap. The seal of the water supply port is formed by abutment between the end portion of the water supply port and the flange portion of the seal member. Since the flange portion is engaged with the annular groove portion, the cap and the cap are arranged along the axial direction of the cap. The height of the cap is suppressed as compared with the engagement with the seal member, and the reservoir tank cap becomes smaller.

The invention according to claim 2 includes a plurality of holes for promoting the attachment of cooling water to the level gauge, and a recess provided with marks indicating the upper and lower cooling water levels between adjacent holes. It is characterized by.

  As a function, when checking the cooling water level, when the level gauge is inserted into the reservoir tank and pulled out, the cooling water accumulates in the hole of the level gauge due to the surface tension of the cooling water, and the amount of cooling water stored can be confirmed . Moreover, since the recessed part provided between adjacent holes has few adhesion amounts of cooling water compared with said hole, it becomes easy to confirm as a mark.

In the first aspect of the invention, a cylindrical water supply port for containing cooling water is formed, a cap is fitted to the water supply port, and a reservoir to which a level gauge for confirming the amount of cooling water stored in the cap is attached. In the tank, a screw is formed on the outer peripheral surface of the water supply port, a female screw is formed on the inner peripheral surface of the cap, and the water is supplied when the cap is screwed to the water supply port on the inner peripheral portion of the cap. A seal member that seals between the opening of the mouth and the cap is engaged, and the level gauge is supported by the seal member, and the seal member is formed with a flange portion having a larger outer diameter than other portions. It is a bottomed cylindrical member consisting of a bottom part and a peripheral wall part extending from the outer peripheral part of the bottom part. On the inner surface of the peripheral wall part, a female screw and an annular groove provided at a position closer to the bottom part than the female screw are formed. ,this The flange portion of the sealing member engages the Jo groove, the seal member has a thick portion that is provided for mounting the level gauge, provided at the upper periphery of the thick portion, the outer diameter than other portions The seal member has an upper large-diameter hole opened on the upper surface provided in the thick-walled part, a narrow gauge fitting hole below this, and a large-diameter hole below this seal member. In the level gauge, the end flange portion is fitted into the upper large-diameter hole portion of the seal member, the lower annular concave portion is fitted into the gauge fitting hole, and the lower annular convex portion is fitted into the large-diameter hole portion. Since the level gauge is supported by fitting to the cap, the assembly of the water supply port and the cap can be easily and surely performed only by screwing the cap, and the seal member is provided on the inner periphery of the cap. Because it engages with the part, it is sandwiched between the cap and the water supply port and exhibits sealing performance In, as in the conventional, it is possible to achieve both the sealing ensuring the level gauge holding a cap.

Further, in the present invention, the seal member is formed with a flange portion having an outer diameter larger than that of the other portion, and the cap is a bottomed cylindrical member including a bottom portion and a peripheral wall portion extending from the outer peripheral portion of the bottom portion. The inner surface of the peripheral wall portion is formed with a female screw and an annular groove provided at a position closer to the bottom than the female screw, and the flange portion of the seal member is engaged with the annular groove portion. Since the portion engages with the annular groove at the bottom of the cap, the cap can be engaged without increasing the height of the peripheral wall portion of the cap rather than engaging the cap and the seal member along the axial direction of the cap. A structure can be provided. Therefore, the height of the cap can be reduced, and the cap can be reduced in size.

In the invention according to claim 2 , the level gauge is formed with a plurality of holes for promoting the adhesion of the cooling water, and a mark indicating the upper limit level and the lower limit level of the cooling water is formed by a recess provided between the adjacent holes. Therefore, the cooling water easily adheres to the level gauge by the plurality of holes, and the cooling water level can be easily confirmed. In addition, since the recessed portion provided between the adjacent holes is less adhering to the cooling water than the above holes, it is easy to confirm as a mark, and the cooling water is between the upper limit level and the lower limit level of the storage amount. You can easily check if there is.

1 is a side view of a motorcycle including a reservoir tank according to the present invention. It is a side view of the reservoir tank concerning the present invention. It is sectional drawing of the cap (Example 1) with which the reservoir tank which concerns on this invention is equipped. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. It is an effect | action figure which shows the assembly point of the cap which concerns on this invention. It is an effect | action figure which shows the attachment point which attaches the cap which concerns on this invention to a water inlet. It is sectional drawing of the cap (Example 2) with which the reservoir tank which concerns on this invention is equipped. It is sectional drawing of the cap (Example 3) with which the reservoir tank which concerns on this invention is equipped. It is sectional drawing of the conventional cap.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In the description, left, right, front, and rear indicate directions based on the driver who has boarded the vehicle. The drawings are to be viewed in the direction of the reference numerals.

A first embodiment of the present invention will be described.
As shown in FIG. 1, a motorcycle 10 includes a body frame 11 having a head pipe 12 provided at a front end portion and a pair of left and right main frames 13, 14 extending rearward and downward from the head pipe 12 (on the front side). Only the reference numeral 14), a pair of left and right center frames 16, 17 (only the reference numeral 17 on the front side) attached to the rear ends of the main frames 13, 14 and the center frames 16, 17 The front fork 21 is attached to the head pipe 12 so as to be steerable and the engine 22 is attached to the lower part of the main frames 13 and 14. A fuel tank 23 is attached to the upper part, and a swing arm is attached to the lower part of the center frames 16 and 17 via a pivot shaft 24. 26 is mounted vertically swingably, the driver's seat 27 and the passenger's seat 28 to the seat rails are attached.

  The front fork 21 has a bar handle 31 at the upper end, a front wheel 32 at the lower end, a radiator 33 in front of the engine 22, and a rear wheel 34 at the rear end of the swing arm 26. .

  A reservoir tank 36 located inside the main frames 13 and 14 is disposed above the radiator 33 and below the fuel tank 23, and is connected to the radiator 33 by a pipe 37.

  The reservoir tank 36 is a tank that stores cooling water. When the cooling water in the radiator 33 becomes high temperature and the inside of the radiator 33 becomes high pressure, the cooling water in the radiator 33 flows into the reservoir tank 36. Further, when the cooling water in the radiator 33 falls to a predetermined temperature and the pressure in the radiator decreases, the cooling water in the reservoir tank 36 returns to the radiator 33.

  Here, reference numeral 41 is a front fender, 42 is a headlamp, 43 is a meter, 44 is an exhaust pipe, 46 is a muffler, 47 is a driver's step, 48 is a passenger's step, 51 is a tail lamp, and 52 is a rear fender. .

The arrow (FRONT) described in FIG. 2 represents the front of the vehicle (the same applies hereinafter).
As shown in FIG. 2, the reservoir tank 36 includes a tank body 61 and a cap 62 that closes a cylindrical water supply port 61 a provided in the tank body 61.

  The tank main body 61 has a water supply port 61a that opens obliquely forward and upward at the front portion, a vehicle body side mounting portion 61b that is formed at the lower portion so as to be attached to the main frame 14 (see FIG. 1) via a stay, Radiator side connection ports 61c and 61d formed on the side and bottom for connecting to the radiator 33 (see FIG. 1) via a pipe (not shown). Reference numerals 61e and 61e are bolt insertion holes for attaching to the stay with bolts and nuts.

The water supply port 61a is formed in a cylindrical shape, and a male screw 61g is formed on the outer peripheral surface of the cylinder.
In this way, the cap 62 can be attached to the water supply port 61a more reliably than the conventional case by screwing the cap 62 to the water supply port 61a.

  As shown in FIG. 3, the cap 62 has a bottomed cylindrical cap body 65, a rubber seal member 66 engaged with the peripheral wall portion 65 a of the cap body 65, and a central portion of the seal member 66. It consists of a level gauge 67 attached.

The cap main body 65 includes a peripheral wall portion 65a and a bottom wall 65b integrally formed with the peripheral wall portion 65a.
The peripheral wall portion 65a is flush with the bottom surface of the bottom wall 65b so that the female screw 65c to be screwed to the water supply port 61a (see FIG. 2) of the tank body 61 (see FIG. 2) and the seal member 66 are engaged. An annular groove 65d formed above is formed.

The seal member 66 is a flange formed so as to be engaged with a gauge fitting hole 66b formed in a thick portion 66a provided at the center for attaching the level gauge 67, and an annular groove portion 65d of the cap body 65. Part 66c.
The gauge fitting hole 66b includes an end hole portion 66e, an annular convex portion 66f, and an other end hole portion 66g from the end.

  The level gauge 67 is a part for confirming the amount of cooling water stored in the reservoir tank 36 (see FIG. 2), and a fitting end portion 67a formed at one end portion for fitting with the seal member 66. A plurality of rectangular holes 67b formed to promote the adhesion of cooling water, and an upper limit level recess 67c and a lower limit level formed to indicate an upper limit level and a lower limit level of the amount of cooling water in the reservoir tank 36. A recess 67d. Reference numeral 67e is a minute convex portion provided around the upper limit level recess 67c and the lower limit level recess 67d in order to make it easier to grasp the positions of the upper limit level recess 67c and the lower limit level recess 67d.

  The fitting end 67a includes an end flange 67f, an annular recess 67g, and an annular projection 67h from the end. The annular projection 66f of the cap body 65 is fitted into the annular recess 67g, and the axial position of the level gauge 67 is determined. Be regulated.

  The hole 67b is a portion that makes it easy for the cooling water to adhere using surface tension, and the upper limit level recess 67c and the lower limit level recess 67d are provided between the plurality of holes 67b. As a result, a large amount of cooling water adheres to the hole 67b, and the upper-level recess 67c and the lower-limit recess 67d have a smaller amount of cooling water, so the positions of the upper-limit recess 67c and the lower-limit recess 67d It becomes easy to visually recognize and can make it easy to recognize the upper limit level and the lower limit level of the cooling water.

As shown in FIG. 4A, the level gauge 67 includes a plurality of holes 67b and upper limit level recesses 67c and 67c provided between the holes 67b and 67b and on both surfaces.
The hole 67b penetrates from one surface of the level gauge 67 to the other surface, and the upper level recesses 67c, 67c are closed by a partition wall 67k. The lower limit level recess 67d (see FIG. 3) also has the same shape as the upper limit level recess 67c.

  As shown in FIG. 4B, when the level gauge 67 is inserted into the tank body 61 (see FIG. 2) and pulled up, green and transparent cooling water 70 is placed in the hole 67b over the entire area of each hole 67b. It adheres so as to block the water, and the cooling water level is easy to visually recognize. In addition, the cooling water 70 is hardly attached to the upper limit level recess 67c, and the bottom surface 67m, which is the surface of the level gauge 67, can be visually recognized, and is easily understood as the upper limit level. The lower limit level recess 67d (see FIG. 3) is the same as the upper limit level recess 67c.

The procedure for assembling the cap 62 described above will now be described.
As shown in FIG. 5A, the flange portion 66c side of the seal member 66 is directed to the level gauge 67 side, and the gauge fitting hole 66b of the seal member 66 is moved to the level gauge 67 as indicated by an arrow. Fit. Then, the seal member 66 is moved from one end side of the level gauge 67 to the other end side.
FIG. 5B shows a state where the gauge fitting hole 66 b of the seal member 66 is fitted to the fitting end 67 a of the level gauge 67.

In FIG. 5C, the level gauge 67 to which the seal member 66 is attached is held by the hand 72, and the seal member 66 is inserted into the peripheral wall portion 65 a of the cap body 65.
5D, the end surface of the seal member 66 and / or the end surface of the level gauge 67 are pressed against the bottom wall 65b of the cap body 65. In this state, the flange 66c of the seal member 66 is bent toward the female screw 65c and does not enter the annular groove 65d. Therefore, the seal member 66 is rotated together with the level gauge 67 about a half circumference around the axis extending in the longitudinal direction of the level gauge 67. As a result, as shown in FIG. 5E, the flange portion 66c of the seal member 66 is accommodated in the annular groove portion 65d.

The mounting procedure of the cap 62 described above will be described next.
In FIG. 6A, the cap 62 is screwed and attached to the water supply port 61a of the tank body 61 as indicated by an arrow.
FIG. 6B shows a state where a cap 62 is attached to the water supply port 61 a of the tank body 61.

  That is, the screw 65c formed on the cap body 65 of the cap 62 is screw-coupled to the male screw 61g of the water supply port 61a, and the seal member 66 of the cap 62, more specifically, the flange portion 66c of the seal member 66 is screw-coupled. Is pressed against the opening end surface 61 h of the water supply port 61 a by the axial force, and the sealing property between the water supply port 61 a and the cap 62 is ensured.

  At this time, the seal member 66 is a member for supporting the level gauge 67 and ensuring the sealing performance between the water supply port 61a and the cap 62, and the support member for supporting the level gauge 67 and the water supply port 61a. The number of parts can be reduced and the cost can be reduced as compared with the case where the seal member for sealing between the cap 62 and the cap 62 is provided separately.

A second embodiment of the present invention will be described. In addition, the same code | symbol is attached | subjected about the same structure as Example 1, and detailed description is abbreviate | omitted.
As shown in FIG. 7, the cap 82 has a bottomed cylindrical cap body 85, a rubber seal member 86 engaged with the bottom wall 85 b of the cap body 85, and a central portion of the seal member 86. It consists of a level gauge 67 attached.

The cap body 85 includes a peripheral wall portion 85a and a bottom wall 85b formed integrally with the peripheral wall portion 85a.
The peripheral wall portion 85a includes a female screw 65c for screw coupling to the water supply port 61a (see FIG. 2) of the tank body 61 (see FIG. 2).
The bottom wall 85b includes a plurality of engagement holes 85c with which the seal member 86 is engaged.

  The seal member 86 is formed so as to be engaged with a gauge fitting hole 66b formed in a thick portion 66a provided at the center for attaching the level gauge 67 and an engagement hole 85c of the cap body 85. An engagement protrusion 86c and a small flange portion 86d that seals between the water supply port 61a of the tank body 61 and the cap body 85 are provided.

A third embodiment of the present invention will be described. In addition, the same code | symbol is attached about the same structure as Example 1 and Example 2, and detailed description is abbreviate | omitted.
As shown in FIG. 8, the cap 92 is attached to a bottomed cylindrical cap body 95, a level gauge 97 attached to the bottom wall 95b of the cap body 95, and a fitting end 67a of the level gauge 97. The rubber seal member 96 is formed.

The cap body 95 includes a peripheral wall portion 85a and a bottom wall 95b formed integrally with the peripheral wall portion 85a.
The bottom wall 95 b includes a female screw 95 c that is screwed to the level gauge 97.

  The level gauge 97 is a part for confirming the amount of cooling water stored in the reservoir tank 36 (see FIG. 2), and a fitting end 67a formed at one end so as to be fitted to the seal member 96. The male screw 97c formed so as to be screw-coupled to the female screw 95c of the cap body 95, a plurality of rectangular holes 67b formed to promote the attachment of the cooling water, and the amount of cooling water in the reservoir tank 36 An upper limit level recess 67c and a lower limit level recess 67d formed to indicate the upper limit level and the lower limit level are provided.

  The seal member 96 seals between the gauge fitting hole 66b formed in the thick wall portion 66a provided in the center so as to be attached to the level gauge 97, and the water supply port 61a of the tank body 61 and the cap body 85. A small flange portion 86d.

  As shown in FIGS. 2 and 3, a cylindrical water supply port 61 a for containing cooling water is formed, and a cap 62 is fitted into the water supply port 61 a, and the amount of cooling water stored in the cap 62 is set in the cap 62. In the reservoir tank 36 to which the level gauge 67 to be confirmed is attached, a screw 61g is formed on the outer peripheral surface of the water supply port 61a, and a female screw 65c that is screw-coupled to the screw 61g is formed on the inner peripheral surface of the cap 62. A seal member 66 that seals a gap between the opening of the water supply port 61a and the cap 62 when the cap 62 is screwed to the water supply port 61a is engaged with the inner peripheral portion of the inner surface of the gas gauge. Therefore, by using the screw type cap 62, the assembly of the water supply port 61a and the cap 62 can be easily and surely performed only by screwing the cap 62. In addition, since the seal member 66 engages with the inner peripheral portion of the cap 62, the seal member 66 is sandwiched between the cap 62 and the water supply port 61a and exhibits a sealing performance. Both securing and holding of the level gauge 67 can be achieved.

  As shown in FIG. 3 above, the seal member 66 is formed with a flange portion 66c having a larger outer diameter than other portions, and the cap 62 has a bottom wall 65b as a bottom portion and an outer peripheral portion of the bottom wall 65b. A bottomed cylindrical member comprising a peripheral wall portion 65a extending from the inner wall of the peripheral wall portion 65a. A female screw 65c and an annular groove portion 65d provided at a position closer to the bottom wall 65b than the female screw 65c are provided. Since the flange portion 66c of the seal member 66 is engaged with the annular groove portion 65d, the height of the peripheral wall portion 65a of the cap 62 is made higher than the engagement of the cap and the seal member along the axial direction of the cap. An engagement structure between the cap 62 and the seal member 66 can be provided without increasing the height. Accordingly, the height of the cap 62 can be reduced, and the cap 62 can be reduced in size.

  In addition, a hole 67b as a plurality of holes for promoting the attachment of cooling water to the level gauge 67 is opened, and an upper limit level recess 67c and a lower limit level recess 67d as marks indicating the upper limit level and the lower limit level of the cooling water are provided. Since it is comprised from the recessed part provided between the adjacent hole parts 67b and 67b, it becomes easy to adhere cooling water to the level gauge 67 by the several hole part 67b, and can make it easy to confirm a cooling water level. . In addition, since the upper limit level recess 67c and the lower limit level recess 67d provided between the adjacent holes 67b are less adhering to the cooling water than the hole 67b, it is easy to confirm as a mark, It can be easily confirmed whether or not the cooling water is between the upper limit level and the lower limit level of the storage amount.

  In the present invention, the level gauge is provided with a plurality of holes for promoting the adhesion of cooling water, and the mark indicating the upper limit level and the lower limit level of the cooling water is formed by the concave portion. A plurality of recesses for promoting adhesion may be provided, and a mark indicating the upper limit level and the lower limit level of the cooling water may be configured by a hole.

  The reservoir tank of the present invention is suitable for a motorcycle.

36 ... reservoir tank, 61a ... water supply port, 61g ... male screw, 62, 82, 92 ... cap, 65a ... peripheral wall, 65b ... bottom (bottom wall), 65c ... female screw, 65d ... annular groove, 66, 86, 96 ... Sealing member, 66b ... Gauge fitting hole, 66c ... Flange, 66e ... Hole 66g ... Hole, 67 , 97 ... Level gauge, 67b ... Hole (hole), 67c ... Recess (recess for upper limit level) , 67d ... concave portion (lower limit level concave portion), 67f ... end flange portion, 67g ... annular concave portion, 67h ... annular convex portion,.

Claims (2)

A cylindrical water supply port (61a) for containing cooling water is formed, and a cap (62) is fitted into the water supply port (61a), and a level gauge for confirming the amount of internal cooling water stored in the cap (62) ( 67) in the attached reservoir tank,
A screw (61g) is formed on the outer peripheral surface of the water supply port (61a), and a female screw (65c) is formed on the inner peripheral surface of the cap (62) to be screwed to the male screw (61g). A seal member (66) that seals between the opening of the water supply port (61a) and the cap (62) when the cap (62) is screwed to the water supply port (61a) is engaged with the periphery. The level gauge (67) is supported by the member (66),
The seal member (66) has a flange portion (66c) having a larger outer diameter than other portions, and the cap (62) has a bottom portion (65b) and a peripheral wall extending from an outer peripheral portion of the bottom portion (65b). A bottomed cylindrical member comprising a portion (65a), on the inner surface of the peripheral wall portion (65a), the female screw (65c) and a position closer to the bottom portion (65b) than the female screw (65c) An annular groove portion (65d) provided on the flange portion (66c) of the seal member (66) is engaged with the annular groove portion (65d),
The sealing member (66) is provided at a thick portion (66a) provided for attaching the level gauge (67) and an upper peripheral portion of the thick portion (66a), and has an outer diameter larger than other portions. Consists of a large flange (66c),
The seal member (66) includes an upper large-diameter hole (66e) that opens to the upper surface provided in the thick wall portion (66a), a narrow gauge fitting hole (66b) below, and a large lower portion below this. A diameter hole (66 g),
In the level gauge (67), an end flange portion (67f) is fitted into the upper large-diameter hole portion (66e) of the seal member (66), and the lower annular recess ( 67g) is fitted into a gauge fitting hole. (66b), and the lower annular protrusion (67h) was fitted into the large-diameter hole (66g) to support the level gauge (67).
A reservoir tank characterized by that. The level gauge (67) is provided with a plurality of holes (67b) for promoting the adhesion of the cooling water, and a recess ( between the holes adjacent to each other having marks indicating the upper limit level and the lower limit level of the cooling water ) 67. The reservoir tank according to claim 1 , wherein the reservoir tank is composed of 67c and 67d) .

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