JP2010151454A - Water sub tank - Google Patents

Water sub tank Download PDF

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JP2010151454A
JP2010151454A JP2008326952A JP2008326952A JP2010151454A JP 2010151454 A JP2010151454 A JP 2010151454A JP 2008326952 A JP2008326952 A JP 2008326952A JP 2008326952 A JP2008326952 A JP 2008326952A JP 2010151454 A JP2010151454 A JP 2010151454A
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tank body
water level
tank
level sensor
float
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JP5364361B2 (en
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Masahiro Mizawa
昌宏 見澤
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UD Trucks Corp
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UD Trucks Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tank preventing fall-off of a float in an independent state in water sub tanks. <P>SOLUTION: The sub tank includes a lower side tank body where a plurality of reinforcement ribs are formed in the vertical direction within it, and an upper side tank body, attached to the upper opening of the lower side tank body, where a plurality of reinforcement ribs are formed in conformity with the above reinforcement ribs in the vertical direction. A water level sensor where a float moves vertically along a support according to the cooling water level is mounted in the lower side tank body, and a fall-off preventing rib preventing fall-off of the float from the upper tip of the support is set above the water level sensor within the upper side tank body. In the tank, the fall-off preventing rib is spanned between the reinforcement ribs of the upper side tank body by aligning it with the axis of the support. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、冷却水位を検知する水位センサを装着したウォータサブタンクに関する。   The present invention relates to a water sub tank equipped with a water level sensor for detecting a cooling water level.

特許文献１に開示されるように、従来、車両内燃機関の冷却系には、ラジエータ内の冷却水の体積膨張を吸収し、オーバーフローパイプからの流出による冷却水の無駄をなくして、長期間冷却水の補充をしなくてすむようにウォータサブタンク（以下、「タンク」という）が装着されている。   As disclosed in Patent Document 1, conventionally, the cooling system of the vehicle internal combustion engine absorbs the volume expansion of the cooling water in the radiator, eliminates the waste of the cooling water due to the outflow from the overflow pipe, and cools for a long time. A water sub tank (hereinafter referred to as “tank”) is installed so that it is not necessary to replenish water.

そして、排ガス規制強化に伴うタンク容積の拡大により、タンクの耐圧強度を確保して耐久性を向上させるため、昨今、図５乃至図７に示すようにタンク１を構成する上側タンク本体３と下側タンク本体５の内部に、複数の補強リブ７，９が仕切板の如く上下方向に一致して設けられている。そして、下側タンク本体５に形成された補強リブ９の下方には切れ込み（図示せず）が設けられており、これらの切れ込みによって、補強リブ９で区画されたタンク１内の冷却水位が均一に保たれるようになっている。   In order to secure the pressure resistance of the tank and improve the durability by expanding the tank volume accompanying the tightening of exhaust gas regulations, the upper tank body 3 and the lower tank constituting the tank 1 as shown in FIGS. A plurality of reinforcing ribs 7 and 9 are provided in the side tank body 5 so as to coincide with the vertical direction like a partition plate. In addition, notches (not shown) are provided below the reinforcing ribs 9 formed in the lower tank body 5, and the cooling water level in the tank 1 partitioned by the reinforcing ribs 9 is uniform due to these notches. To be kept.

尚、周知のように前記タンク１は、下側タンク本体５の上部開口に上側タンク本体３が取り付いて形成される。   As is well known, the tank 1 is formed by attaching the upper tank body 3 to the upper opening of the lower tank body 5.

また、タンク１内の冷却水位の減少に伴うエア吸い込み等によるエンジンへのダメージを防止するため、タンク１内の水位が一定水位以下になった場合に、これを検知してエンジン保護機能を作動させる水位センサ１１がタンク１内に装着されている。   Also, in order to prevent damage to the engine due to air suction due to a decrease in the cooling water level in the tank 1, when the water level in the tank 1 falls below a certain level, this is detected and the engine protection function is activated. A water level sensor 11 is mounted in the tank 1.

水位センサ１１は、下側タンク本体５に形成された支柱（センサガイド）１３と、該支柱１３に緩挿され、冷却水位に応じて該支柱１３を上下動する水位センサフロート（以下、「フロート」という）１５と、支柱１３内に組み込まれたセンサ本体（図示せず）とからなり、フロート１５にはマグネット（図示せず）が組み込まれている。そして、タンク１内の水位が一定水位以下になると、マグネットによりセンサ本体がＯＮとなって、エンジン保護機能に検出信号を送出するようになっている。
実公昭６０−１３８５号公報 The water level sensor 11 includes a column (sensor guide) 13 formed on the lower tank body 5 and a water level sensor float (hereinafter referred to as “float”) that is loosely inserted into the column 13 and moves up and down according to the cooling water level. And a sensor main body (not shown) incorporated in the column 13, and a magnet (not shown) is incorporated in the float 15. When the water level in the tank 1 falls below a certain water level, the sensor body is turned on by the magnet, and a detection signal is sent to the engine protection function.
Japanese Utility Model Publication No. 60-1385

しかし乍ら、前記支柱１３の上部は自由端となっており、また、タンク単品状態でフロート１５は自由に動く状態にあるため、例えば車両への組み付け前にタンク１を逆さまにしてしまうと、支柱１３からフロート１５が脱落してしまう虞があった。   However, the upper portion of the support column 13 is a free end, and the float 15 is in a state of free movement in a single tank state. For example, if the tank 1 is turned upside down before assembly to the vehicle, There was a possibility that the float 15 would fall off from the column 13.

また、タンク１内の水位が十分あるにも拘わらず、例えば車両の急制動やローリング等によってタンク１内の水位が一方に偏ると、フロート１５が下がってセンサ本体がＯＮとなる誤作動が発生する虞があった。   In addition, even if the water level in the tank 1 is sufficient, if the water level in the tank 1 is biased to one side due to sudden braking or rolling of the vehicle, for example, a malfunction occurs in which the float 15 is lowered and the sensor body is turned on. There was a fear.

本発明は斯かる実情に鑑み案出されたもので、単品状態でのフロートの脱落を防止したタンクを提供することを第一の目的とする。   The present invention has been devised in view of such circumstances, and a first object thereof is to provide a tank that prevents the float from falling off in a single product state.

そして、本発明の第二の目的は、車両の急制動やローリング等による水位センサの誤作動を防止したタンクを提供することにある。   A second object of the present invention is to provide a tank that prevents malfunction of the water level sensor due to sudden braking or rolling of the vehicle.

斯かる目的を達成するため、請求項１に係る発明は、内部に複数の補強リブが上下方向に形成された下側タンク本体と、該下側タンク本体の上部開口に取り付き、前記補強リブと一致させて複数の補強リブが上下方向に形成された上側タンク本体とからなり、前記下側タンク本体内に、冷却水位に応じフロートが支柱に沿って上下動する水位センサが装着されたタンクに於て、前記上側タンク本体内に、前記支柱の上部先端からのフロートの脱落を防止する脱落防止リブを水位センサの上方に設けたことを特徴とする。   In order to achieve such an object, the invention according to claim 1 includes a lower tank body in which a plurality of reinforcing ribs are formed in the vertical direction, and is attached to an upper opening of the lower tank body. A tank equipped with a water level sensor in which a plurality of reinforcing ribs are formed in an up-and-down direction and in which the float moves up and down along the support column in the lower tank body according to the cooling water level. However, a drop-off prevention rib for preventing the float from dropping off from the upper end of the column is provided in the upper tank body above the water level sensor.

そして、請求項２に係る発明は、請求項１に記載のタンクに於て、前記脱落防止リブは、前記支柱の軸心に合わせて上側タンク本体の補強リブ間に架設されていることを特徴とし、請求項３に係る発明は、請求項１または請求項２に記載のタンクに於て、前記水位センサを囲繞する補強リブを下側タンク本体に立設し、該補強リブの下部に、冷却水の移動を減勢させる貫通孔を設けたことを特徴とする。   According to a second aspect of the present invention, in the tank according to the first aspect, the drop-off prevention rib is provided between the reinforcing ribs of the upper tank body so as to be aligned with the axial center of the support column. The invention according to claim 3 is the tank according to claim 1 or 2, wherein a reinforcing rib surrounding the water level sensor is erected on the lower tank body, and a lower part of the reinforcing rib is A through hole for reducing the movement of the cooling water is provided.

請求項１及び請求項２に係る発明によれば、タンクが如何なる向きになっても水位センサのフロートが支柱から脱落することがなく、水位センサの機能を維持することができる。   According to the invention which concerns on Claim 1 and Claim 2, the float of a water level sensor does not drop from a support | pillar whatever the tank becomes, and the function of a water level sensor can be maintained.

また、請求項２に係る発明によれば、既存の補強リブを利用してこれらの間に脱落防止リブを架設したので、脱落防止リブによって補強リブの強度が向上する利点を有する。   Further, according to the invention according to claim 2, since the drop-off preventing ribs are installed between the existing reinforcing ribs, there is an advantage that the strength of the reinforcing ribs is improved by the drop-off preventing ribs.

そして、請求項３に係る発明によれば、例えば走行時の急制動によってタンク内の冷却水が偏った場合でも、水位センサ周辺の水位が安定するため、水位センサの誤作動を防止することが可能となる。   And according to the invention which concerns on Claim 3, even when the cooling water in a tank is biased by the sudden braking at the time of driving | running | working, since the water level around a water level sensor is stabilized, malfunctioning of a water level sensor can be prevented. It becomes possible.

以下、本発明の実施形態を図面に基づいて詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

図１乃至図４は請求項１乃至請求項３に係る発明の一実施形態を示し、図１乃至図３に於て、２１は内部に複数の補強リブ２３が上下方向に形成された下側タンク本体、２５は前記補強リブ２３と一致させて内部に複数の補強リブ２７が上下方向に形成された上側タンク本体で、図５のタンク１と同様、下側タンク本体２１の上部開口に上側タンク本体２５が取り付いて本実施形態に係るタンク２９が形成されている。   1 to 4 show an embodiment of the invention according to claims 1 to 3, in which a reference numeral 21 denotes a lower side in which a plurality of reinforcing ribs 23 are formed in the vertical direction. A tank body 25 is an upper tank body in which a plurality of reinforcing ribs 27 are formed in the vertical direction so as to coincide with the reinforcing ribs 23, and similar to the tank 1 of FIG. A tank main body 25 is attached to form a tank 29 according to the present embodiment.

そして、図７の補強リブ９と同様、前記補強リブ２３の下方に切れ込み（図示せず）が設けられており、これらの切れ込みによって、補強リブ２３で区画されたタンク２９内の冷却水位が均一に保たれるようになっている。   7, notches (not shown) are provided below the reinforcing ribs 23, and the cooling water level in the tank 29 partitioned by the reinforcing ribs 23 is uniform due to these notches. To be kept.

更に、下側タンク本体２１の底部３１の略中央には、該底部３１に立設された支柱１３と、該支柱１３に緩挿されてタンク２９内の冷却水位に応じ上下動するフロート１５と、支柱１３内に組み込まれたセンサ本体（図示せず）とからなる水位センサ１１が装着されており、支柱１３の上部は自由端となっている。   Furthermore, in the approximate center of the bottom 31 of the lower tank body 21, there are a column 13 standing on the bottom 31 and a float 15 that is loosely inserted into the column 13 and moves up and down according to the cooling water level in the tank 29. A water level sensor 11 comprising a sensor main body (not shown) incorporated in the column 13 is mounted, and the upper part of the column 13 is a free end.

而して、図２に示すように本実施形態は、上述の如き従来と同様の構成に加え、先ず、上側タンク本体２１の略中央の２本の対向する補強リブ２３間に、１つの脱落防止リブ３３を上側タンク本体２１の長手方向に一体に架設したことを第一の特徴としており、既述したように下側タンク本体２１の上部開口に上側タンク本体２５を取り付けてタンク２９を形成した際に、図４の如く前記脱落防止リブ３３が支柱１５の軸心上に配置され、且つ該脱落防止リブ３３が支柱１５の上部先端との間に僅かな隙間ができる程度に上方から近接して、支柱１５からのフロート１５の脱落防止を図るようになっている。   Thus, as shown in FIG. 2, in the present embodiment, in addition to the configuration similar to the conventional one as described above, first, one dropout is provided between the two opposing reinforcing ribs 23 at the approximate center of the upper tank body 21. The first feature is that the prevention rib 33 is integrally installed in the longitudinal direction of the upper tank body 21, and the tank 29 is formed by attaching the upper tank body 25 to the upper opening of the lower tank body 21 as described above. As shown in FIG. 4, the drop-off prevention rib 33 is arranged on the axis of the support column 15, and the drop-off prevention rib 33 is close to the upper end of the support column 15 so that a slight gap is formed. Thus, the float 15 is prevented from falling off the support column 15.

更に、本実施形態の第二の特徴として、図３に示すように下側タンク本体２１に複数の補強リブ２３を立設するに当たり、前記水位センサ１１を狭い領域で囲繞するように補強リブ２３を設けて旋回層３５を形成すると共に、図１に示すように旋回層３５を形成する４辺の補強リブ２３のうちの１辺の補強リブ２３の下部に、冷却水の移動を減勢させる貫通孔３７を設けたことを特徴としている。   Further, as a second feature of the present embodiment, when the plurality of reinforcing ribs 23 are erected on the lower tank body 21 as shown in FIG. 3, the reinforcing ribs 23 are surrounded so as to surround the water level sensor 11 in a narrow area. 1 to form the swivel layer 35 and to reduce the movement of the cooling water in the lower part of the reinforcing rib 23 on one side of the four reinforcing ribs 23 forming the swivel layer 35 as shown in FIG. A through hole 37 is provided.

本実施形態はこのように構成されており、下側タンク本体２１の上部開口に上側タンク本体２５が取り付いてタンク２９が形成され、内部に設けた補強リブ２３，２７がタンク２９の耐圧強度を確保することとなるが、斯様に下側タンク本体２１の上部開口に上側タンク本体２５を取り付けてタンク２９が形成されると、図４の如く上側タンク本体２５に設けた脱落防止リブ３３が支柱１５の軸心上に配置され、且つ該脱落防止リブ３３が支柱１５の上部先端との間に僅かな隙間ができる程度に上方から近接するため、例えば車両への組み付け前にタンク２９を逆さまにしても、脱落防止リブ３３がフロート１５の脱落を防止する。   In the present embodiment, the upper tank body 25 is attached to the upper opening of the lower tank body 21 to form the tank 29, and the reinforcing ribs 23 and 27 provided inside provide the pressure resistance of the tank 29. In this way, when the upper tank body 25 is attached to the upper opening of the lower tank body 21 to form the tank 29, the drop-off prevention rib 33 provided on the upper tank body 25 as shown in FIG. Since the drop-off prevention rib 33 is arranged on the axis of the column 15 and close from above so that a slight gap is formed between the upper end of the column 15 and the tank 29 is turned upside down before assembling the vehicle, for example. Even so, the drop prevention rib 33 prevents the float 15 from falling off.

また、車両へのタンク２９の組み付け後、例えば車両の急制動やローリング等によってタンク２９内の冷却水が一方に偏っても、前記旋回層３５内の冷却水の移動が前記貫通孔３７によって減勢されるため、旋回層３５内の冷却水位が急激に減少することがなく、フロート１５が急激に移動することがない。   Further, after the tank 29 is assembled to the vehicle, even if the cooling water in the tank 29 is biased to one side due to, for example, sudden braking or rolling of the vehicle, the movement of the cooling water in the turning layer 35 is reduced by the through hole 37. Therefore, the cooling water level in the swirl layer 35 does not decrease rapidly, and the float 15 does not move rapidly.

従って、本実施形態によれば、タンク２９が如何なる向きになってもフロート１５が支柱１３から脱落することがなく、水位センサ１１の機能を維持することが可能となった。   Therefore, according to this embodiment, it is possible to maintain the function of the water level sensor 11 without the float 15 falling off the column 13 regardless of the orientation of the tank 29.

而も、既存の補強リブ２７を利用してこれらの間に脱落防止リブ３３を架設したため、脱落防止リブ３３によって補強リブ２７の強度が向上する利点を有する。   In addition, since the drop-off prevention rib 33 is installed between the existing reinforcement ribs 27, the drop-off prevention rib 33 has an advantage that the strength of the reinforcement rib 27 is improved.

また、既述したように旋回層３５を設けて、走行時に冷却水が偏った場合でも旋回層３５内の水位が安定するように構成したので、本実施形態によれば、水位センサ１１の誤作動を防止することが可能となった。   In addition, as described above, the swirl layer 35 is provided so that the water level in the swirl layer 35 is stabilized even when the cooling water is biased during traveling. It became possible to prevent the operation.

尚、前記実施形態では、既存の補強リブ２７を利用してこれらの間に脱落防止リブ３３を架設したが、脱落防止リブの形状や構造は前記実施形態に限定されず、水位センサの上方の上側タンク本体に脱落防止リブが配置されていれば、その形状や本数等は適宜変更可能であり、補強リブ２７と独立して上側タンク本体に脱落防止リブを設けてもよい。   In the above-described embodiment, the drop-off prevention rib 33 is installed between the existing reinforcing ribs 27. However, the shape and structure of the drop-off prevention rib are not limited to those in the above-described embodiment. If a drop-off prevention rib is disposed on the upper tank body, the shape, number, etc. thereof can be changed as appropriate, and the drop-off prevention rib may be provided on the upper tank body independently of the reinforcing rib 27.

請求項１乃至請求項３の一実施形態に係るウォータサブタンクの側面図である。It is a side view of the water subtank concerning one embodiment of Claim 1 thru / or Claim 3. 上側タンク本体の底面図である。It is a bottom view of an upper tank body. 下側タンク本体の平面図である。It is a top view of a lower tank main body. 水位センサに対する脱落防止リブの位置を示す下側タンク本体の平面図である。It is a top view of the lower tank main part which shows the position of the drop-off prevention rib with respect to a water level sensor. 従来のウォータサブタンクの側面図である。It is a side view of the conventional water subtank. 従来の上側タンク本体の底面図である。It is a bottom view of the conventional upper tank main body. 従来の下側タンク本体の平面図である。It is a top view of the conventional lower tank main body.

符号の説明Explanation of symbols

１１ 水位センサ
１３ 支柱
１５ フロート
２１ 下側タンク本体
２３，２７ 補強リブ
２５ 上側タンク本体
２９ タンク
３３ 脱落防止リブ
３５ 旋回層
３７ 貫通孔
DESCRIPTION OF SYMBOLS 11 Water level sensor 13 Support | pillar 15 Float 21 Lower tank main body 23, 27 Reinforcement rib 25 Upper tank main body 29 Tank 33 Fall-off prevention rib 35 Swivel layer 37 Through hole

Claims (3)

内部に複数の補強リブが上下方向に形成された下側タンク本体と、該下側タンク本体の上部開口に取り付き、前記補強リブと一致させて複数の補強リブが上下方向に形成された上側タンク本体とからなり、前記下側タンク本体内に、冷却水位に応じ水位センサフロートが支柱に沿って上下動する水位センサが装着されたウォータサブタンクに於て、
前記上側タンク本体内に、前記支柱の上部先端からの水位センサフロートの脱落を防止する脱落防止リブを、水位センサの上方に設けたことを特徴とするウォータサブタンク。 A lower tank body in which a plurality of reinforcing ribs are formed in the vertical direction, and an upper tank that is attached to the upper opening of the lower tank body and is formed in the vertical direction so as to match the reinforcing ribs In the water sub-tank in which the water level sensor is mounted in the lower tank body, and the water level sensor float moves up and down along the support column in accordance with the cooling water level.
A water sub-tank characterized in that a drop-off preventing rib for preventing the water level sensor float from dropping off from the upper end of the support column is provided in the upper tank body above the water level sensor. 前記脱落防止リブは、前記支柱の軸心に合わせて上側タンク本体の補強リブ間に架設されていることを特徴とする請求項１に記載のウォータサブタンク。   The water sub-tank according to claim 1, wherein the drop-off prevention rib is provided between the reinforcing ribs of the upper tank body in accordance with the axial center of the support column. 前記水位センサを囲繞する補強リブを下側タンク本体に立設し、該補強リブの下部に、冷却水の移動を減勢させる貫通孔を設けたことを特徴とする請求項１または請求項２に記載のウォータサブタンク。
The reinforcing rib surrounding the water level sensor is erected on the lower tank body, and a through hole for reducing the movement of the cooling water is provided below the reinforcing rib. Water sub tank described in
JP2008326952A 2008-12-24 2008-12-24 Water sub tank Expired - Fee Related JP5364361B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112356656A (en) * 2020-10-23 2021-02-12 东风柳州汽车有限公司 Liquid storage tank and automobile cooling system

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JPS5525210U (en) * 1978-08-03 1980-02-19
JP2007205749A (en) * 2006-01-31 2007-08-16 Hitachi Ltd Liquid level detection device and liquid storage container

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JPS5525210U (en) * 1978-08-03 1980-02-19
JP2007205749A (en) * 2006-01-31 2007-08-16 Hitachi Ltd Liquid level detection device and liquid storage container

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112356656A (en) * 2020-10-23 2021-02-12 东风柳州汽车有限公司 Liquid storage tank and automobile cooling system
CN112356656B (en) * 2020-10-23 2023-08-01 东风柳州汽车有限公司 Liquid storage tank and automobile cooling system

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