WO2022065156A1 - Cap for reserve tank - Google Patents
Cap for reserve tank Download PDFInfo
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- WO2022065156A1 WO2022065156A1 PCT/JP2021/033917 JP2021033917W WO2022065156A1 WO 2022065156 A1 WO2022065156 A1 WO 2022065156A1 JP 2021033917 W JP2021033917 W JP 2021033917W WO 2022065156 A1 WO2022065156 A1 WO 2022065156A1
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- WIPO (PCT)
- Prior art keywords
- reserve tank
- cap
- diameter
- opening
- coolant
- Prior art date
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
Definitions
- This disclosure relates to the structure of the reserve tank cap provided in the vehicle.
- a reserve tank installed in a vehicle, there is a reserve tank that is connected to the radiator of the engine and stores coolant (radiator liquid).
- This type of reserve tank can temporarily store the coolant that overflows from the radiator when the engine temperature rises, and can return the stored coolant to the radiator when the engine temperature drops.
- a removable cap is provided on the upper part of the reserve tank as described above. The user removes this cap to refill the tank with coolant.
- This cap has a sealing function to seal the coolant so that it does not leak out of the tank. Further, in general, the cap is provided with a breather function in addition to the sealing function.
- the breather function is a function provided for smooth inflow and outflow of coolant into the reserve tank, and is practically realized by providing a ventilation passage or the like.
- the structure of the cap is required to be easily attached and detached by the user. Further, the structure of the cap is required to have a sealing property so that the coolant does not leak even when the vehicle is running, while satisfying such a requirement.
- This disclosure has been made in consideration of the above points, and provides a reserve tank cap that can achieve both ease of attachment / detachment from the reserve tank and liquid sealing property.
- a cap that can be detachably attached to the cylindrical opening formed at the top of the reserve tank.
- a flange extending radially outward of the opening and having a lower surface abutting on the upper surface of the opening.
- a tubular portion extending along the cap insertion direction of the opening, and a tubular portion. Equipped with The tubular portion includes a diameter-expanded portion that expands in diameter outward in the radial direction.
- the enlarged diameter portion has elasticity and has elasticity. The outermost diameter of the enlarged diameter portion is equal to or larger than the diameter of the opening of the opening.
- Perspective view showing the appearance of the reserve tank Cross-sectional view of the reserve tank and cap near the mounting part cut in the vertical plane including the diameter of the cap with the cap attached to the reserve tank.
- Cross-sectional view for explaining the configuration of the cap of the comparative example Sectional drawing which shows the structure of the cap of the other above-described embodiment. Sectional drawing which shows the structure of the cap of the other above-described embodiment.
- FIG. 1 is a perspective view showing a state in which the reserve tank using the cap of the present embodiment is attached to the radiator
- FIG. 2 is a perspective view showing the appearance of the reserve tank.
- the reserve tank 10 is connected to the radiator 20 via a pipe 11.
- the reserve tank 10 is attached to the frame of the radiator fan 21.
- one end of the pipe 11 is attached to the pipe attachment port 12 (FIG. 2) provided at the lower part of the reserve tank 10, and the other end of the pipe 11 is provided at the upper part of the radiator 20. It can be attached to the pipe attachment port (not shown).
- the coolant radiatator liquid
- a cap 100 that can be attached to and detached from the reserve tank 10 is provided on the upper part of the reserve tank 10. The user can remove the cap 100 from the reserve tank 10 to replenish the coolant in the reserve tank 10.
- the cap 100 can be attached to the reserve tank 10 by pushing it into the opening formed in the upper part of the reserve tank 10. Further, the cap 100 can be removed from the reserve tank 10 by pulling it upward from the reserve tank 10.
- the cap 113 is provided with a ventilation pipe 113.
- the ventilation pipe 113 is provided to communicate the inside of the reserve tank 10 with the outside. Further, the cap 100 is connected to the upper part of the reserve tank 10 by the connecting portion 115. By providing the connecting portion 115, it is possible to prevent the cap 100 removed from the reserve tank 10 from falling or being lost.
- the cap 100 separates from the reserve tank 10 from the opposite side (that is, the ventilation pipe 113 side) with the vicinity of the connecting portion 115 as a fulcrum. That is, the cap 100 is not removed in the upward direction, but is removed by rotating diagonally upward with the vicinity of the connecting portion 115 as a fulcrum.
- a collar (not shown) or the like for the user to catch a finger may be formed.
- FIG. 3 is a cross-sectional view of the reserve tank 10 and the cap 100 in the vicinity of the attachment portion cut in a vertical plane including the diameter of the cap 100 in a state where the cap 100 is attached to the reserve tank 10.
- the cap 100 has an upper lid portion 110 and a seal portion 120.
- the seal portion 120 is formed of a member having a larger elasticity than the upper lid portion 110.
- the upper lid portion 110 is formed of, for example, synthetic resin, and the seal portion 120 is formed of, for example, synthetic rubber.
- the seal portion 110 is attached to the lower surface side of the upper lid portion 110 via the locking claw 112.
- a locking claw 111 is formed on the edge of the upper lid portion 110, and the cap 100 is fixed to the reserve tank 10 by engaging the locking claw 111 with the opening 13 of the reserve tank 10.
- the seal portion 120 has a flange 121 and a tubular portion 122.
- the flange 121 extends radially outward of the opening 13.
- the tubular portion 122 extends along the cap insertion direction of the opening 13.
- the lower surface of the flange portion 121 comes into contact with the upper surface of the opening 13 when the cap 100 is attached to the reserve tank 10.
- the cylinder portion 122 has a double cylinder structure having an inner cylinder portion 122a, an outer cylinder portion 122b, and a connection portion 122c that connects the inner cylinder portion 122a and the outer cylinder portion 122b in the radial direction.
- the connection portion 122c is formed with an air hole 123 that communicates the internal space 124 of the double cylinder and the inside of the reserve tank 10. Further, in the tubular portion 122, an air hole 125 is formed at a position corresponding to the ventilation pipe 113.
- the inside of the reserve tank 10 communicates with the outside air via the air hole 123, the internal space 124, the air hole 125, and the ventilation pipe 113.
- the air in the reserve tank 10 corresponding to the amount of the coolant is the air hole 123. It is discharged and introduced through the internal space 124, the air holes 125 and the ventilation pipe 113. As a result, the coolant smoothly flows in and out of the reserve tank 10.
- the air hole 123 and the air hole 125 are formed on opposite sides of the tubular portion 122 in the radial direction, so that even if the coolant enters the internal space 124 from the air hole 123, this coolant is easy. Cannot reach the air hole 125. As a result, leakage of the coolant through the air holes 123, the internal space 124, the air holes 125 and the ventilation pipe 113 is suppressed.
- the tubular portion 120 has a diameter-expanded portion 126 that expands in diameter outward in the radial direction.
- the enlarged diameter portion 126 has elasticity. Further, the outermost diameter of the enlarged diameter portion 126 is set to be equal to or larger than the diameter of the opening of the opening portion 13. As a result, when the cap 100 is attached to the reserve tank 10, the diameter-expanded portion 126 is in close contact with the inner peripheral surface 13a of the opening 13 over the entire circumference.
- the diameter-expanded portion 126 is formed by expanding the diameter of a part of the outer cylinder portion 122b to the outside in the radial direction.
- the enlarged diameter portion 126 of the present embodiment is semicircular.
- the coolant in the reserve tank 10 first has the lower surface of the flange 121 in close contact with the upper surface of the opening 13. Secondly, the enlarged diameter portion 126 is brought into close contact with the inner peripheral surface 13a of the opening 13 so that it is sealed in the reserve tank 10. As a result, even if the coolant jumps up to the position of the cap 100 when the vehicle is running, it is possible to prevent the coolant from leaking to the outside.
- the user lifts the position of the cap 100 (specifically, the ventilation pipe 113) away from the connecting portion 115 in the direction of the arrow X1.
- the cap 100 is removed from the opening 13 of the reserve tank 10 while rotating around the vicinity of the connecting portion 115 as a fulcrum.
- FIG. 4 having the same reference numerals as those corresponding to FIG. 3 is a cross-sectional view showing the configuration of a comparative example.
- the tubular portion 120 does not have the enlarged diameter portion 126 as compared with the configuration of FIG. That is, the tubular portion 120 of FIG. 4 is separated from the inner peripheral surface 13a of the opening portion 13 by a certain distance.
- the cooling property is sealed in the reserve tank 10 only when the lower surface of the flange 121 is in close contact with the upper surface of the opening 13, so that the sealing property is lower than that of the configuration of FIG. turn into.
- the cap 100 extends toward the outer side in the radial direction of the opening 13 and has a flange 121 having a lower surface abutting on the upper surface of the opening 13 and the opening 13. It has a tubular portion 120 extending along the cap insertion direction. Further, the tubular portion 120 has a diameter-expanded portion 126 that expands in diameter outward in the radial direction, the diameter-expanded portion 126 has elasticity, and the outermost diameter of the diameter-expanded portion 126 is equal to or larger than the diameter of the opening of the opening 13. be.
- the shape of the enlarged diameter portion 126 is a semicircle is described, but the shape of the enlarged diameter portion is not limited to this.
- FIG. 5 having the same reference numeral in the portion corresponding to FIG. 3 is a cross-sectional view showing the configuration of another embodiment.
- the diameter-expanded portion 127 is expanded downward.
- the enlarged diameter portion 127 is C-shaped or skirt-shaped.
- FIG. 6 having the same reference numerals as those corresponding to FIG. 3 is a cross-sectional view showing the configuration of another embodiment.
- the diameter-expanded portion 128 has a first portion 128a whose diameter increases downward, a second portion 128b whose diameter decreases downward, and a third portion 128c connecting the first portion 128a and the second portion 128b. And have.
- the enlarged diameter portion 128 is barrel-shaped.
- the enlarged diameter portion 128 has a larger contact area with the inner peripheral surface 13a by the third portion 128c, so that the sealing effect of the enlarged diameter portion 128 can be enhanced. ..
- the present invention is not limited to this, and may be applied to, for example, a reserve tank for storing washer fluid.
- it is suitable for a reserve tank that is required to be easily attached to and detached from the reserve tank and to have a liquid sealing property.
- the present invention is suitable for a reserve tank that is required to be easily attached to and detached from the reserve tank and to have a liquid sealing property.
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Abstract
A cap having: a flange extending outward in the radial direction of an opening portion of a reserve tank and having a lower surface abutted against an upper surface of the opening portion; and a cylindrical portion extending along a cap insertion direction of the opening portion. Further, the cylindrical portion has a diameter expanding portion having the diameter increasing outward in the radial direction, the diameter expanding portion has elasticity, and the outermost diameter of the diameter expanding portion is larger than or equal to the diameter of the opening of the opening portion.
Description
本開示は、車両に設けられるリザーブタンクのキャップの構造に関する。
This disclosure relates to the structure of the reserve tank cap provided in the vehicle.
車両に設けられるリザーブタンクとして、エンジンのラジエーターに連結され、クーラント（ラジエーター液）を貯留するリザーブタンクがある。
As a reserve tank installed in a vehicle, there is a reserve tank that is connected to the radiator of the engine and stores coolant (radiator liquid).
この種のリザーブタンクは、エンジンの温度上昇時にはラジエーターから溢れるクーラントを一時的に貯留するとともに、エンジンの温度下降時には貯留していたクーラントをラジエーターに戻すことができるようになっている。
This type of reserve tank can temporarily store the coolant that overflows from the radiator when the engine temperature rises, and can return the stored coolant to the radiator when the engine temperature drops.
具体的には、エンジンの温度上昇に伴ってラジエーター及び流路の温度が上昇するとそれらの内圧が上昇し、その内圧上昇に起因して溢れたクーラントが一時的にリザーブタンクに貯留される。これにより、温度上昇に起因するラジエーター及び流路の破損が防止される。
Specifically, when the temperature of the radiator and the flow path rises as the temperature of the engine rises, their internal pressure rises, and the coolant that overflows due to the rise in the internal pressure is temporarily stored in the reserve tank. This prevents damage to the radiator and the flow path due to the temperature rise.
一方、エンジンの温度が低下すると、ラジエーター及び流路等の内圧が下がって負圧が発生し、その負圧によりリザーブタンクに貯留されていたクーラントがラジエーター及び流路に引き戻される。
On the other hand, when the temperature of the engine drops, the internal pressure of the radiator and the flow path decreases to generate a negative pressure, and the negative pressure causes the coolant stored in the reserve tank to be pulled back to the radiator and the flow path.
この種のリザーブタンクは、例えば特許文献１等の多数の文献で開示されている。
This type of reserve tank is disclosed in a large number of documents such as Patent Document 1.
上述したようなリザーブタンクの上部には、着脱可能なキャップが設けられている。ユーザーは、このキャップを取り外して、タンク内にクーラントを補給する。
A removable cap is provided on the upper part of the reserve tank as described above. The user removes this cap to refill the tank with coolant.
このキャップには、クーラントがタンク内から漏れ出さないように密封するためのシール機能が備えられている。また、一般に、キャップには、シール機能に加えて、ブリーザー機能が備えられている。ブリーザー機能とは、リザーブタンク内へのクーラントの流入及び流出をスムーズに行うために備えられる機能であり、実際上、通気通路等を設けることにより実現されている。
This cap has a sealing function to seal the coolant so that it does not leak out of the tank. Further, in general, the cap is provided with a breather function in addition to the sealing function. The breather function is a function provided for smooth inflow and outflow of coolant into the reserve tank, and is practically realized by providing a ventilation passage or the like.
ところで、リザーブタンクへのクーラントの補給は定期的に行う必要があるので、キャップの構造は、ユーザーが簡単に着脱を行うものであることが要求される。さらに、キャップの構造は、このような要求を満たしつつ、車両の走行時でもクーラントが漏れ出ないシール性が要求される。
By the way, since it is necessary to replenish the reserve tank with coolant on a regular basis, the structure of the cap is required to be easily attached and detached by the user. Further, the structure of the cap is required to have a sealing property so that the coolant does not leak even when the vehicle is running, while satisfying such a requirement.
本開示は、以上の点を考慮してなされたものであり、リザーブタンクからの着脱の容易性と、液体のシール性とを両立できる、リザーブタンクのキャップを提供する。
This disclosure has been made in consideration of the above points, and provides a reserve tank cap that can achieve both ease of attachment / detachment from the reserve tank and liquid sealing property.
本開示のリザーブタンクのキャップの一つの態様は、
リザーブタンクの上部に形成された円筒状の開口部に着脱可能に取り付けられるキャップであって、
前記開口部の半径方向外側に向かって延在し、前記開口部の上面に下面が当接するフランジと、
前記開口部のキャップ挿入方向に沿って延在する筒部と、
を備え、
前記筒部は、半径方向外側へ拡径する拡径部を備え、
前記拡径部は、弾性を有し、
前記拡径部の最外径は、前記開口部の開口の径以上である。 One aspect of the reserve tank cap of the present disclosure is:
A cap that can be detachably attached to the cylindrical opening formed at the top of the reserve tank.
A flange extending radially outward of the opening and having a lower surface abutting on the upper surface of the opening.
A tubular portion extending along the cap insertion direction of the opening, and a tubular portion.
Equipped with
The tubular portion includes a diameter-expanded portion that expands in diameter outward in the radial direction.
The enlarged diameter portion has elasticity and has elasticity.
The outermost diameter of the enlarged diameter portion is equal to or larger than the diameter of the opening of the opening.
リザーブタンクの上部に形成された円筒状の開口部に着脱可能に取り付けられるキャップであって、
前記開口部の半径方向外側に向かって延在し、前記開口部の上面に下面が当接するフランジと、
前記開口部のキャップ挿入方向に沿って延在する筒部と、
を備え、
前記筒部は、半径方向外側へ拡径する拡径部を備え、
前記拡径部は、弾性を有し、
前記拡径部の最外径は、前記開口部の開口の径以上である。 One aspect of the reserve tank cap of the present disclosure is:
A cap that can be detachably attached to the cylindrical opening formed at the top of the reserve tank.
A flange extending radially outward of the opening and having a lower surface abutting on the upper surface of the opening.
A tubular portion extending along the cap insertion direction of the opening, and a tubular portion.
Equipped with
The tubular portion includes a diameter-expanded portion that expands in diameter outward in the radial direction.
The enlarged diameter portion has elasticity and has elasticity.
The outermost diameter of the enlarged diameter portion is equal to or larger than the diameter of the opening of the opening.
本開示によれば、リザーブタンクからの着脱の容易性と、液体のシール性とを両立できる、リザーブタンクのキャップを実現できる。
According to the present disclosure, it is possible to realize a cap of the reserve tank that can achieve both ease of attachment / detachment from the reserve tank and liquid sealing property.
以下、本開示の実施の形態を、図面を参照して説明する。
Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
図１は本実施の形態のキャップが用いられるリザーブタンクのラジエーターへの取り付け状態を示す斜視図であり、図２はリザーブタンクの外観を示す斜視図である。
FIG. 1 is a perspective view showing a state in which the reserve tank using the cap of the present embodiment is attached to the radiator, and FIG. 2 is a perspective view showing the appearance of the reserve tank.
リザーブタンク１０は、パイプ１１を介してラジエーター２０に接続されている。リザーブタンク１０は、ラジエーターファン２１のフレームに取り付けられている。なお、図１及び図２の例では、パイプ１１の一端はリザーブタンク１０の下部に設けられたパイプ取付口１２（図２）に取り付けられ、パイプ１１の他端はラジエーター２０の上部に設けられたパイプ取付口（図示せず）に取り付けられる。これにより、クーラント（ラジエーター液）がラジエーター２０とリザーブタンク１０との間で流通できるようになっている。
The reserve tank 10 is connected to the radiator 20 via a pipe 11. The reserve tank 10 is attached to the frame of the radiator fan 21. In the examples of FIGS. 1 and 2, one end of the pipe 11 is attached to the pipe attachment port 12 (FIG. 2) provided at the lower part of the reserve tank 10, and the other end of the pipe 11 is provided at the upper part of the radiator 20. It can be attached to the pipe attachment port (not shown). As a result, the coolant (radiator liquid) can be distributed between the radiator 20 and the reserve tank 10.
上述したように、エンジンの温度上昇に伴ってラジエーター２０及び流路の温度が上昇するとそれらの内圧が上昇し、その内圧上昇に起因して溢れたクーラントが一時的にリザーブタンクに貯留される。これにより、温度上昇に起因するラジエーター２０及び流路の破損が防止される。
As described above, when the temperature of the radiator 20 and the flow path rises as the temperature of the engine rises, the internal pressures thereof rise, and the overflowed coolant due to the rise in the internal pressure is temporarily stored in the reserve tank. This prevents damage to the radiator 20 and the flow path due to the temperature rise.
一方、エンジンの温度が低下すると、ラジエーター２０及び流路等の内圧が下がって負圧が発生し、その負圧によりリザーブタンク１０に貯留されていたクーラントがラジエーター２０及び流路に引き戻される。
On the other hand, when the temperature of the engine drops, the internal pressure of the radiator 20 and the flow path decreases to generate a negative pressure, and the negative pressure causes the coolant stored in the reserve tank 10 to be pulled back to the radiator 20 and the flow path.
リザーブタンク１０の上部には、リザーブタンク１０から着脱可能なキャップ１００が設けられている。ユーザーは、このキャップ１００をリザーブタンク１０から取り外して、リザーブタンク１０内にクーラントを補給することができる。
A cap 100 that can be attached to and detached from the reserve tank 10 is provided on the upper part of the reserve tank 10. The user can remove the cap 100 from the reserve tank 10 to replenish the coolant in the reserve tank 10.
キャップ１００は、リザーブタンク１０の上部に形成された開口に押し込むことでリザーブタンク１０に取り付けることができる。また、キャップ１００は、リザーブタンク１０から上方に引っ張ることでリザーブタンク１０から取り外すことができる。
The cap 100 can be attached to the reserve tank 10 by pushing it into the opening formed in the upper part of the reserve tank 10. Further, the cap 100 can be removed from the reserve tank 10 by pulling it upward from the reserve tank 10.
キャップ１１３には通気パイプ１１３が設けられている。通気パイプ１１３は、リザーブタンク１０内と外部とを連通させるために設けられている。また、キャップ１００は、連結部１１５によってリザーブタンク１０の上部に繋がれている。連結部１１５が設けられていることにより、リザーブタンク１０から取り外したキャップ１００の落下や紛失等が防止される。
The cap 113 is provided with a ventilation pipe 113. The ventilation pipe 113 is provided to communicate the inside of the reserve tank 10 with the outside. Further, the cap 100 is connected to the upper part of the reserve tank 10 by the connecting portion 115. By providing the connecting portion 115, it is possible to prevent the cap 100 removed from the reserve tank 10 from falling or being lost.
ここで、リザーブタンク１０からキャップ１０を取り外す際には、ユーザーは通気パイプ１１３に指を引っかけて上方に引っ張る。これより、キャップ１００は、連結部１１５の近傍を支点にしてその反対側（つまり通気パイプ１１３側）からリザーブタンク１０から離れていく。つまり、キャップ１００は、真上方向に取り外されるのではなく、連結部１１５の近傍を支点にして斜め上方へと回転するようにして取り外される。なお、通気パイプ１１３の代わりに、ユーザーが指を引っかかるための鍔（図示せず）等が形成されていてもよい。
Here, when removing the cap 10 from the reserve tank 10, the user hooks a finger on the ventilation pipe 113 and pulls it upward. As a result, the cap 100 separates from the reserve tank 10 from the opposite side (that is, the ventilation pipe 113 side) with the vicinity of the connecting portion 115 as a fulcrum. That is, the cap 100 is not removed in the upward direction, but is removed by rotating diagonally upward with the vicinity of the connecting portion 115 as a fulcrum. In addition, instead of the ventilation pipe 113, a collar (not shown) or the like for the user to catch a finger may be formed.
図３は、リザーブタンク１０にキャップ１００を取り付けた状態において、取り付け部付近のリザーブタンク１０及びキャップ１００を、キャップ１００の直径を含む鉛直面で切った断面図である。
FIG. 3 is a cross-sectional view of the reserve tank 10 and the cap 100 in the vicinity of the attachment portion cut in a vertical plane including the diameter of the cap 100 in a state where the cap 100 is attached to the reserve tank 10.
キャップ１００は、上蓋部１１０と、シール部１２０と、を有する。シール部１２０は、上蓋部１１０よりも弾性の大きい部材により形成されている。上蓋部１１０は例えば合成樹脂により形成されており、シール部１２０は例えば合成ゴムにより形成されている。シール部１１０は、上蓋部１１０の下面側に係止爪１１２を介して取り付けられている。
The cap 100 has an upper lid portion 110 and a seal portion 120. The seal portion 120 is formed of a member having a larger elasticity than the upper lid portion 110. The upper lid portion 110 is formed of, for example, synthetic resin, and the seal portion 120 is formed of, for example, synthetic rubber. The seal portion 110 is attached to the lower surface side of the upper lid portion 110 via the locking claw 112.
上蓋部１１０の縁部には係止爪１１１が形成されており、この係止爪１１１がリザーブタンク１０の開口部１３に係合することにより、キャップ１００がリザーブタンク１０に固定される。
A locking claw 111 is formed on the edge of the upper lid portion 110, and the cap 100 is fixed to the reserve tank 10 by engaging the locking claw 111 with the opening 13 of the reserve tank 10.
シール部１２０は、フランジ１２１と、筒部１２２と、を有する。フランジ１２１は、開口部１３の半径方向外側に向かって延在する。筒部１２２は、開口部１３のキャップ挿入方向に沿って延在する。
The seal portion 120 has a flange 121 and a tubular portion 122. The flange 121 extends radially outward of the opening 13. The tubular portion 122 extends along the cap insertion direction of the opening 13.
フランジ部１２１は、リザーブタンク１０にキャップ１００が取り付けられた際に、下面が開口部１３の上面に当接する。
The lower surface of the flange portion 121 comes into contact with the upper surface of the opening 13 when the cap 100 is attached to the reserve tank 10.
筒部１２２は、内筒部１２２ａと、外筒部１２２ｂと、内筒部１２２ａ及び外筒部１２２ｂを半径方向で接続する接続部１２２ｃと、を有する、二重筒構造となっている。接続部１２２ｃには、二重筒の内部空間１２４とリザーブタンク１０内とを連通する空気孔１２３が形成されている。また、筒部１２２のうち、通気パイプ１１３に対応する位置には空気孔１２５が形成されている。
The cylinder portion 122 has a double cylinder structure having an inner cylinder portion 122a, an outer cylinder portion 122b, and a connection portion 122c that connects the inner cylinder portion 122a and the outer cylinder portion 122b in the radial direction. The connection portion 122c is formed with an air hole 123 that communicates the internal space 124 of the double cylinder and the inside of the reserve tank 10. Further, in the tubular portion 122, an air hole 125 is formed at a position corresponding to the ventilation pipe 113.
これにより、リザーブタンク１０の内部は、空気孔１２３、内部空間１２４、空気孔１２５及び通気パイプ１１３を介して外気と連通している。この結果、ラジエーター２０の温度変化に応じてパイプ１１（図１）を介してリザーブタンク１０内にクーラントが流入及び流出すると、そのクーラントの量に相当するリザーブタンク１０内の空気は空気孔１２３、内部空間１２４、空気孔１２５及び通気パイプ１１３を介して排出及び導入される。これにより、リザーブタンク１０にクーラントがスムーズに流入及び流出する。
As a result, the inside of the reserve tank 10 communicates with the outside air via the air hole 123, the internal space 124, the air hole 125, and the ventilation pipe 113. As a result, when the coolant flows in and out of the reserve tank 10 through the pipe 11 (FIG. 1) in response to the temperature change of the radiator 20, the air in the reserve tank 10 corresponding to the amount of the coolant is the air hole 123. It is discharged and introduced through the internal space 124, the air holes 125 and the ventilation pipe 113. As a result, the coolant smoothly flows in and out of the reserve tank 10.
ここで、空気孔１２３と空気孔１２５は、互いに筒部１２２の径方向の反対側に形成されており、これにより、空気孔１２３から内部空間１２４にクーラントが進入したとしても、このクーラントは容易には空気孔１２５に到達することができない。この結果、、空気孔１２３、内部空間１２４、空気孔１２５及び通気パイプ１１３を介してのクーラントの漏出は抑制される。
Here, the air hole 123 and the air hole 125 are formed on opposite sides of the tubular portion 122 in the radial direction, so that even if the coolant enters the internal space 124 from the air hole 123, this coolant is easy. Cannot reach the air hole 125. As a result, leakage of the coolant through the air holes 123, the internal space 124, the air holes 125 and the ventilation pipe 113 is suppressed.
かかる構成に加えて、筒部１２０は、半径方向外側へ拡径する拡径部１２６を有する。拡径部１２６は、弾性を有する。また、拡径部１２６の最外径は、開口部１３の開口の径以上とされている。これにより、リザーブタンク１０にキャップ１００が取り付けられた状態において、拡径部１２６は開口部１３の内周面１３ａに全周に亘って密着する。
In addition to this configuration, the tubular portion 120 has a diameter-expanded portion 126 that expands in diameter outward in the radial direction. The enlarged diameter portion 126 has elasticity. Further, the outermost diameter of the enlarged diameter portion 126 is set to be equal to or larger than the diameter of the opening of the opening portion 13. As a result, when the cap 100 is attached to the reserve tank 10, the diameter-expanded portion 126 is in close contact with the inner peripheral surface 13a of the opening 13 over the entire circumference.
本実施の形態の場合、拡径部１２６は、外筒部１２２ｂの一部を半径方向外側へ拡径することで形成されている。図から分かるように、本実施の形態の拡径部１２６は、半円状である。
In the case of the present embodiment, the diameter-expanded portion 126 is formed by expanding the diameter of a part of the outer cylinder portion 122b to the outside in the radial direction. As can be seen from the figure, the enlarged diameter portion 126 of the present embodiment is semicircular.
以上の構成において、図３に示したように、リザーブタンク１０にキャップ１００を取り付けた状態において、リザーブタンク１０内のクーラントは、第１に、フランジ１２１の下面が開口部１３の上面と密着することにより、第２に、拡径部１２６が開口部１３の内周面１３ａに密着することにより、リザーブタンク１０内に封止（シール）される。これにより、車両の走行時にクーラントがキャップ１００の位置まで跳ね上がったとしても、外部へのクーラントの漏出を防止できる。
In the above configuration, as shown in FIG. 3, when the cap 100 is attached to the reserve tank 10, the coolant in the reserve tank 10 first has the lower surface of the flange 121 in close contact with the upper surface of the opening 13. Secondly, the enlarged diameter portion 126 is brought into close contact with the inner peripheral surface 13a of the opening 13 so that it is sealed in the reserve tank 10. As a result, even if the coolant jumps up to the position of the cap 100 when the vehicle is running, it is possible to prevent the coolant from leaking to the outside.
また、リザーブタンク１０からキャップ１００を取り外す際には、ユーザーは連結部１１５から離れたキャップ１００の位置（具体的には通気パイプ１１３）を矢印Ｘ１の方向に持ち上げる。これにより、キャップ１００は連結部１１５の近傍を支点にして回転しながらリザーブタンク１０の開口部１３から取り外される。
Further, when removing the cap 100 from the reserve tank 10, the user lifts the position of the cap 100 (specifically, the ventilation pipe 113) away from the connecting portion 115 in the direction of the arrow X1. As a result, the cap 100 is removed from the opening 13 of the reserve tank 10 while rotating around the vicinity of the connecting portion 115 as a fulcrum.
このとき、開口部１３の内周面１３ａに密着しているのは弾性を有する拡径部１２６のみなので、ユーザーは簡単に矢印Ｘ１の方向にキャップ１００を持ち上げることができる。ここで、もしも、外筒部１２２ｂが挿入方向の全長に亘って開口部１３の内周面１３ａに密着していたとすると、ユーザーは矢印Ｘ１の方向にキャップ１００を持ち上げることが困難となる。本実施の形態では、これを考慮して、拡径部１２６を形成することで、拡径部１２６のみで内周面１３ａと当接してシール性を高めている。
At this time, since only the elastic diameter-expanded portion 126 is in close contact with the inner peripheral surface 13a of the opening 13, the user can easily lift the cap 100 in the direction of the arrow X1. Here, if the outer cylinder portion 122b is in close contact with the inner peripheral surface 13a of the opening 13 over the entire length in the insertion direction, it becomes difficult for the user to lift the cap 100 in the direction of the arrow X1. In the present embodiment, in consideration of this, by forming the enlarged diameter portion 126, only the enlarged diameter portion 126 abuts on the inner peripheral surface 13a to improve the sealing property.
図３との対応部分に同一符号が付された図４は、比較例の構成を示す断面図である。図４の構成では、図３の構成と比較して、筒部１２０が拡径部１２６を有していない。つまり、図４の筒部１２０は、開口部１３の内周面１３ａから一定距離離れている。これにより、図４の構成によれば、筒部１２０が内周面１３ａにぶつからないので、ユーザーは簡単に矢印Ｘ１の方向にキャップ１００を持ち上げることができる。しかしながら、図４の構成では、リザーブタンク１０内へのクーラントのシールは、フランジ１２１の下面が開口部１３の上面と密着するのみで行われるので、図３の構成と比較してシール性が低くなってしまう。
FIG. 4 having the same reference numerals as those corresponding to FIG. 3 is a cross-sectional view showing the configuration of a comparative example. In the configuration of FIG. 4, the tubular portion 120 does not have the enlarged diameter portion 126 as compared with the configuration of FIG. That is, the tubular portion 120 of FIG. 4 is separated from the inner peripheral surface 13a of the opening portion 13 by a certain distance. As a result, according to the configuration of FIG. 4, since the tubular portion 120 does not hit the inner peripheral surface 13a, the user can easily lift the cap 100 in the direction of the arrow X1. However, in the configuration of FIG. 4, the cooling property is sealed in the reserve tank 10 only when the lower surface of the flange 121 is in close contact with the upper surface of the opening 13, so that the sealing property is lower than that of the configuration of FIG. turn into.
以上説明したように、本実施の形態によれば、キャップ１００は、開口部１３の半径方向外側に向かって延在し、開口部１３の上面に下面が当接するフランジ１２１と、開口部１３のキャップ挿入方向に沿って延在する筒部１２０と、有する。さらに、筒部１２０は、半径方向外側へ拡径する拡径部１２６を有し、拡径部１２６は弾性を有し、拡径部１２６の最外径は開口部１３の開口の径以上である。
As described above, according to the present embodiment, the cap 100 extends toward the outer side in the radial direction of the opening 13 and has a flange 121 having a lower surface abutting on the upper surface of the opening 13 and the opening 13. It has a tubular portion 120 extending along the cap insertion direction. Further, the tubular portion 120 has a diameter-expanded portion 126 that expands in diameter outward in the radial direction, the diameter-expanded portion 126 has elasticity, and the outermost diameter of the diameter-expanded portion 126 is equal to or larger than the diameter of the opening of the opening 13. be.
これにより、リザーブタンク１０からの着脱の容易性と、クーラントのシール性とを両立できる、リザーブタンク１０のキャップ１００を実現できる。
As a result, it is possible to realize the cap 100 of the reserve tank 10 which can achieve both the ease of attachment / detachment from the reserve tank 10 and the sealing property of the coolant.
上述の実施の形態は、本発明を実施するにあたっての具体化の一例を示したものに過ぎず、これらによって本発明の技術的範囲が限定的に解釈されてはならないものである。すなわち、本発明はその要旨、またはその主要な特徴から逸脱することの無い範囲で、様々な形で実施することができる。
The above-described embodiment is merely an example of the embodiment of the present invention, and the technical scope of the present invention should not be construed in a limited manner by these. That is, the present invention can be implemented in various forms without departing from its gist or its main features.
上述の実施の形態では、拡径部１２６の形状を半円状とした場合について述べたが、拡径部の形状はこれに限らない。
In the above-described embodiment, the case where the shape of the enlarged diameter portion 126 is a semicircle is described, but the shape of the enlarged diameter portion is not limited to this.
図３との対応部分に同一符号が付された図５は、他の実施の形態の構成を示す断面図である。図５の構成では、拡径部１２７は下方ほど拡径している。換言すれば、拡径部１２７は、ハの字型、あるいは、スカート型である。これにより、拡径部１２７よりも上方にクーラントが進入したとしても、そのクーラントは拡径部１２７の斜面に沿って下方にスムーズに流れてやすくなる。つまり、拡径部１２７の密着面とフランジ１２１の密着面との間の空間にクーラントが溜まりにくくなる。この結果、フランジ１２１の密着面から外部にクーラントが漏れ出しにくくなる。
FIG. 5 having the same reference numeral in the portion corresponding to FIG. 3 is a cross-sectional view showing the configuration of another embodiment. In the configuration of FIG. 5, the diameter-expanded portion 127 is expanded downward. In other words, the enlarged diameter portion 127 is C-shaped or skirt-shaped. As a result, even if the coolant enters above the enlarged diameter portion 127, the coolant easily flows downward along the slope of the enlarged diameter portion 127. That is, the coolant is less likely to accumulate in the space between the contact surface of the enlarged diameter portion 127 and the contact surface of the flange 121. As a result, the coolant is less likely to leak to the outside from the contact surface of the flange 121.
図３との対応部分に同一符号が付された図６は、他の実施の形態の構成を示す断面図である。図６の構成では、拡径部１２８は、下方ほど拡径する第１部分１２８ａと、下方ほど縮径する第２部分１２８ｂと、第１部分１２８ａと第２部分１２８ｂとを繋ぐ第３部分１２８ｃと、を有する。換言すれば、拡径部１２８は、樽型である。これにより、図３の拡径部１２６と比較して、拡径部１２８は第３部分１２８ｃによる内周面１３ａへの密着面積が大きくなるので、拡径部１２８によるシール効果を高めることができる。
FIG. 6 having the same reference numerals as those corresponding to FIG. 3 is a cross-sectional view showing the configuration of another embodiment. In the configuration of FIG. 6, the diameter-expanded portion 128 has a first portion 128a whose diameter increases downward, a second portion 128b whose diameter decreases downward, and a third portion 128c connecting the first portion 128a and the second portion 128b. And have. In other words, the enlarged diameter portion 128 is barrel-shaped. As a result, as compared with the enlarged diameter portion 126 in FIG. 3, the enlarged diameter portion 128 has a larger contact area with the inner peripheral surface 13a by the third portion 128c, so that the sealing effect of the enlarged diameter portion 128 can be enhanced. ..
なお、上述の実施の形態では、本発明を、ラジエーターのクーラントを貯留するリザーブタンクに適用した場合について述べたが、これに限らず、例えばウォッシャー液を貯留するリザーブタンクに適用してもよい。要は、リザーブタンクからの着脱の容易性と、液体のシール性とが求められるリザーブタンクに好適である。
Although the above-described embodiment has been described when the present invention is applied to a reserve tank for storing radiator coolant, the present invention is not limited to this, and may be applied to, for example, a reserve tank for storing washer fluid. In short, it is suitable for a reserve tank that is required to be easily attached to and detached from the reserve tank and to have a liquid sealing property.
２０２０年９月２８日出願の特願２０２０－１６１７３６の日本出願に含まれる明細書、図面および要約書の開示内容は、すべて本願に援用される。
The disclosures of the specification, drawings and abstract contained in the Japanese application of Japanese Patent Application No. 2020-161733 filed on September 28, 2020 are all incorporated herein by reference.
本発明は、リザーブタンクからの着脱の容易性と、液体のシール性とが求められるリザーブタンクに好適である。
The present invention is suitable for a reserve tank that is required to be easily attached to and detached from the reserve tank and to have a liquid sealing property.
１０ リザーブタンク
１１ パイプ
１２ パイプ取付口
１３ 開口部
１３ａ 内周面
２０ ラジエーター
２１ ラジエーターファン
１００ キャップ
１１０ 上蓋部
１１１、１１２ 係止爪
１１３ 通気パイプ
１１５ 連結部
１２０ 挿入部
１２１ フランジ
１２２ 筒部
１２２ａ 内筒部
１２２ｂ 外筒部
１２２ｃ 接続部
１２３、１２５ 空気孔
１２４ 内部空間
１２６、１２７、１２８ 拡径部 10Reserve tank 11 Pipe 12 Pipe mounting port 13 Opening 13a Inner peripheral surface 20 Radiator 21 Radiator fan 100 Cap 110 Top lid 111, 112 Locking claw 113 Ventilation pipe 115 Connecting part 120 Inserting part 121 Flange 122 Cylinder part 122a Inner cylinder part 122b Outer cylinder part 122c Connection part 123, 125 Air hole 124 Internal space 126, 127, 128 Diameter expansion part
１１ パイプ
１２ パイプ取付口
１３ 開口部
１３ａ 内周面
２０ ラジエーター
２１ ラジエーターファン
１００ キャップ
１１０ 上蓋部
１１１、１１２ 係止爪
１１３ 通気パイプ
１１５ 連結部
１２０ 挿入部
１２１ フランジ
１２２ 筒部
１２２ａ 内筒部
１２２ｂ 外筒部
１２２ｃ 接続部
１２３、１２５ 空気孔
１２４ 内部空間
１２６、１２７、１２８ 拡径部 10
Claims (5)
- リザーブタンクの上部に形成された円筒状の開口部に着脱可能に取り付けられるキャップであって、
前記開口部の半径方向外側に向かって延在し、前記開口部の上面に下面が当接するフランジと、
前記開口部のキャップ挿入方向に沿って延在する筒部と、
を備え、
前記筒部は、半径方向外側へ拡径する拡径部を備え、
前記拡径部は、弾性を有し、
前記拡径部の最外径は、前記開口部の開口の径以上である、
リザーブタンクのキャップ。 A cap that can be detachably attached to the cylindrical opening formed at the top of the reserve tank.
A flange extending radially outward of the opening and having a lower surface abutting on the upper surface of the opening.
A tubular portion extending along the cap insertion direction of the opening, and a tubular portion.
Equipped with
The tubular portion includes a diameter-expanded portion that expands in diameter outward in the radial direction.
The enlarged diameter portion has elasticity and has elasticity.
The outermost diameter of the enlarged diameter portion is equal to or larger than the diameter of the opening of the opening portion.
Reserve tank cap. - 前記拡径部は、半円状である、
請求項１に記載のリザーブタンクのキャップ。 The enlarged diameter portion has a semicircular shape.
The cap of the reserve tank according to claim 1. - 前記拡径部は、下方ほど拡径している、
請求項１に記載のリザーブタンクのキャップ。 The diameter-expanded portion expands toward the bottom.
The cap of the reserve tank according to claim 1. - 前記拡径部は、下方ほど拡径する第１部分と、下方ほど縮径する第２部分と、前記第１部分と前記第２部分とを繋ぐ第３部分と、を有する、
請求項１に記載のリザーブタンクのキャップ。 The enlarged diameter portion has a first portion whose diameter increases downward, a second portion whose diameter decreases downward, and a third portion connecting the first portion and the second portion.
The cap of the reserve tank according to claim 1. - 前記筒部は、内筒部と、外筒部と、前記内筒部及び前記外筒部を半径方向で接続する接続部と、を備える、二重筒構造であり、
前記拡径部は、前記外筒部が半径方向外側へ拡径することで形成されており、
前記接続部には、前記二重筒の内部空間と前記リザーブタンク内とを連通する空気孔が形成されている、
請求項１に記載のリザーブタンクのキャップ。 The cylinder portion has a double cylinder structure including an inner cylinder portion, an outer cylinder portion, and a connection portion that connects the inner cylinder portion and the outer cylinder portion in the radial direction.
The diameter-expanded portion is formed by expanding the diameter of the outer cylinder portion to the outside in the radial direction.
An air hole that communicates the internal space of the double cylinder and the inside of the reserve tank is formed in the connection portion.
The cap of the reserve tank according to claim 1.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2020161736A JP2022054602A (en) | 2020-09-28 | 2020-09-28 | Cap of reserve tank |
| JP2020-161736 | 2020-09-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022065156A1 true WO2022065156A1 (en) | 2022-03-31 |
Family
ID=80846549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2021/033917 WO2022065156A1 (en) | 2020-09-28 | 2021-09-15 | Cap for reserve tank |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2022054602A (en) |
| WO (1) | WO2022065156A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5981735U (en) * | 1982-11-25 | 1984-06-02 | ダイハツ工業株式会社 | vehicle tank |
| JPH09100719A (en) * | 1995-10-05 | 1997-04-15 | Hino Motors Ltd | Cap sealing structure of reserve tank |
| JPH10212953A (en) * | 1997-01-31 | 1998-08-11 | Suzuki Motor Corp | Reserve tank |
| JP2008157039A (en) * | 2006-12-21 | 2008-07-10 | Calsonic Kansei Corp | Attaching-detaching structure of cap and attaching-detaching structure of radiator cap |
| JP2010275902A (en) * | 2009-05-27 | 2010-12-09 | Toyota Motor Corp | Cap for reserve tank |
| JP2017008852A (en) * | 2015-06-24 | 2017-01-12 | スズキ株式会社 | Vehicular reserve tank |
-
2020
- 2020-09-28 JP JP2020161736A patent/JP2022054602A/en active Pending
-
2021
- 2021-09-15 WO PCT/JP2021/033917 patent/WO2022065156A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5981735U (en) * | 1982-11-25 | 1984-06-02 | ダイハツ工業株式会社 | vehicle tank |
| JPH09100719A (en) * | 1995-10-05 | 1997-04-15 | Hino Motors Ltd | Cap sealing structure of reserve tank |
| JPH10212953A (en) * | 1997-01-31 | 1998-08-11 | Suzuki Motor Corp | Reserve tank |
| JP2008157039A (en) * | 2006-12-21 | 2008-07-10 | Calsonic Kansei Corp | Attaching-detaching structure of cap and attaching-detaching structure of radiator cap |
| JP2010275902A (en) * | 2009-05-27 | 2010-12-09 | Toyota Motor Corp | Cap for reserve tank |
| JP2017008852A (en) * | 2015-06-24 | 2017-01-12 | スズキ株式会社 | Vehicular reserve tank |
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| Publication number | Publication date |
|---|---|
| JP2022054602A (en) | 2022-04-07 |
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