JPH086647Y2 - Washer liquid supply device - Google Patents
Washer liquid supply deviceInfo
- Publication number
- JPH086647Y2 JPH086647Y2 JP1988121358U JP12135888U JPH086647Y2 JP H086647 Y2 JPH086647 Y2 JP H086647Y2 JP 1988121358 U JP1988121358 U JP 1988121358U JP 12135888 U JP12135888 U JP 12135888U JP H086647 Y2 JPH086647 Y2 JP H086647Y2
- Authority
- JP
- Japan
- Prior art keywords
- passage
- delivery
- suction passage
- liquid
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
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- Cleaning By Liquid Or Steam (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は自動車等に用いられるウオツシヤ液供給装置
に係わり、特に２系統の流出経路を有するウオツシヤポ
ンプのバルブ部の構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a wash liquid supply device used in an automobile or the like, and more particularly to a structure of a valve portion of a wash pump having two outflow paths.
従来、自動車用のウオツシヤ液供給装置としては、例
えば第２図および第３図に示す構造が提案されている。
すなわち、第２図に示されるウオツシヤ液供給装置は、
ポンプとして遠心フアン方式を用いたものであり、同図
において、流入口21から流れ込んだウオツシヤ液は遠心
式のフアン22により負圧がかけられ、呼入孔23を介して
流出口24に送出され、自動車のウインドに噴出される。
また、第３図に示されるウオツシヤ液供給装置は、ギア
ポンプを用いたものであり、同図に示すように流入口31
から流れ込んだウオツシヤ液はギア32の回転により吸入
口33を介して流出口34に送出され、自動車のウインドに
噴出される。2. Description of the Related Art Conventionally, for example, a structure shown in FIG. 2 and FIG. 3 has been proposed as an automotive wash liquid supply device.
That is, the wash liquid supply device shown in FIG.
A centrifugal fan system is used as a pump.In the figure, the washing liquid flowing from the inflow port 21 is negatively pressured by the centrifugal fan 22, and is delivered to the outflow port 24 through the inlet port 23. Erupted into the window of a car.
Further, the wash liquid supply device shown in FIG. 3 uses a gear pump, and as shown in FIG.
The wash liquid that has flowed in from is discharged to the outflow port 34 through the suction port 33 by the rotation of the gear 32 and is ejected to the window of the automobile.
しかしながら、上記構成によるウオツシヤ液供給装置
は、以下に説明するような問題があつた。すなわち、遠
心フアン方式のウオツシヤ液供給装置は、ウオツシヤ液
の吸入孔23が装置本体の中心部にあるため、２方向切替
機構が簡単である反面、周囲温度の低温時においては、
常温時と比較してウオツシヤ液の粘性が増加し、ウオツ
シヤ液の噴出圧が著しく低下するという問題があつた。
また、ギアポンプ方式は、ウオツシヤ液が低温度化によ
り、粘性が増加しても噴出圧が低下しない反面、吸入孔
33が装置本体の中心部に設定できないので、第３図
（ｂ）に示すように従動歯車を２枚かつ逆止弁機能を４
個所に設定する構造としなければならなかつた。この結
果、構造が複雑化し、コストアツプとなるという問題が
あつた。However, the wash liquid supply device having the above configuration has the following problems. That is, in the centrifugal fan type wash liquid supply device, since the wash liquid suction hole 23 is at the center of the device main body, the two-way switching mechanism is simple, but at the time of low ambient temperature,
There is a problem that the viscosity of the wash liquid is increased and the jetting pressure of the wash liquid is remarkably reduced as compared with that at room temperature.
In addition, the gear pump system does not lower the ejection pressure even if the viscosity increases as the temperature of the wash liquid decreases, but the suction port
Since 33 cannot be set in the center of the main body of the device, two driven gears and a check valve function of 4 are used as shown in Fig. 3 (b).
It had to be a structure that was set at each point. As a result, there is a problem that the structure becomes complicated and the cost is increased.
このような課題を解決するためになされたものであ
り、タンクからウオッシャ液を受け入れるための入り口
を有する第１の吸入用通路および第２の吸入用通路と、
常時は第１の吸入用通路の入り口を閉じており、第１の
吸入用通路内の圧力が減少したときに入り口を開く第１
の逆止め弁と、常時は第２の吸入用通路の入り口を閉じ
ており、第２の吸入用通路内の圧力が減少したときに入
り口を開く第２の逆止め弁と、モータにより回転駆動さ
れる駆動歯車とこの駆動歯車に噛み合う従動歯車とから
なり、一方の方向に回転したとき第１の吸入用通路内の
液を吸引して第１の送出通路に送出し、他方の方向に回
転したとき第２の吸入用通路内の液を吸引して第２の送
出通路に送出する駆動手段と、第１の送出口と第２の送
出口の間に配置された弁を有し、駆動手段によって第１
の送出通路に液が送出されて液圧が発生したとき、その
液圧で弁を駆動して第２の送出口を閉塞するとともに第
１の送出口と第１の送出通路とを連通し、駆動手段によ
って第２の送出通路に液が送出されて液圧が発生したと
き、その液圧で弁を上記と反対方向へ駆動して第１の送
出口を閉塞するとともに第２送出口と第２の送出通路と
を連通する送出通路切替手段と、駆動歯車および従動歯
車が収容されたギャポンプ室に連結されかつタンクから
ギャポンプ室にウオッシャ液を注入するバイパスパイプ
とを設けたものである。The present invention has been made in order to solve such a problem, and has a first suction passage and a second suction passage having an inlet for receiving washer fluid from a tank,
The inlet of the first suction passage is normally closed, and the inlet is opened when the pressure in the first suction passage decreases.
And a second check valve that normally closes the inlet of the second suction passage and opens the inlet when the pressure in the second suction passage decreases, and is rotationally driven by a motor. Drive gear and a driven gear that meshes with this drive gear, and when it rotates in one direction, it sucks the liquid in the first suction passage, discharges it to the first delivery passage, and rotates it in the other direction. At this time, the driving means for sucking the liquid in the second suction passage and sending it to the second delivery passage, and the valve arranged between the first delivery port and the second delivery port are provided. First by means
When the liquid is delivered to the delivery passage of No. 1 and a fluid pressure is generated, the valve is driven by the fluid pressure to close the second delivery port and communicate the first delivery port with the first delivery passage, When liquid is delivered to the second delivery passage by the drive means and a fluid pressure is generated, the valve is driven in the opposite direction by the fluid pressure to close the first delivery port and the second delivery port and the second delivery port. A delivery passage switching means that communicates with the two delivery passages, and a bypass pipe that is connected to the gear pump chamber that houses the drive gear and the driven gear and that injects the washer liquid from the tank into the gear pump chamber are provided.
本願考案においては、駆動歯車，従動歯車の回転によ
り発生する液圧により第１の逆止め弁は開放し、第２の
逆止め弁は閉塞することによりウオッシャ液吸入通路が
形成される。In the present invention, the first check valve is opened and the second check valve is closed by the hydraulic pressure generated by the rotation of the drive gear and the driven gear, thereby forming the washer liquid suction passage.
以下、本考案について図面を参照して説明する。 Hereinafter, the present invention will be described with reference to the drawings.
第１図は本考案の一実施例を示す断面図である。同図
において、１はケーシング、２はモータに連結されて駆
動される駆動歯車、３は駆動歯車２に噛合する従動歯
車、4,5はウオツシヤ液の吸入用通路、6,7は吸入用通路
4,5の逆止め弁、8,9はウオツシヤ液の送出通路切替室、
10は送出通路切替弁、11,12はウオツシヤ液の送出通
路、13,14はウオツシヤ液の送出口、15は初期時にギヤ
ポンプに十分注水しポンプとして起動性を高めるための
バイパスパイプである。FIG. 1 is a sectional view showing an embodiment of the present invention. In the figure, 1 is a casing, 2 is a drive gear that is driven by being connected to a motor, 3 is a driven gear that meshes with the drive gear 2, 4 and 5 are passages for inhaling wash liquid, and 6 and 7 are passages for suction.
Check valves 4 and 5, 8 and 9 are discharge passage switching chambers for wash liquid
Reference numeral 10 is a delivery passage switching valve, 11 and 12 are delivery passages for the wash liquid, 13 and 14 are delivery outlets for the wash liquid, and 15 is a bypass pipe for sufficiently injecting water into the gear pump at the initial stage to enhance the startability of the pump.
このような構成において、モータによつて駆動歯車２
を実線矢印の方向に回転させると、従動歯車３も実線矢
印の方向に回転し、ウオツシヤ液は図示しないタンクか
ら吸入用通路４を通り、駆動歯車2,従動歯車３により送
出通路12を通つて送出通路切替室９に送られ、ウオツシ
ヤ液圧により送出通路切替弁10が送出通路を切替え、送
出口14からウオツシヤ液を例えば自動車のリヤ・ウイン
ドに噴出させる。このとき、逆止め弁６は吸引による圧
力で開放され、逆止め弁７は送出による圧力で閉塞され
る。次にモータが逆転して駆動歯車２が点線矢印の方向
に回転した場合には、ウオツシヤ液は送出通路11を通
り、送出口からウオツシヤ液を例えば自動車のフロント
ウインドに噴出させる。このとき、逆止め弁７は開放さ
れ、逆止め弁６は閉塞される。In such a configuration, the drive gear 2 is driven by the motor.
When is rotated in the direction of the solid line arrow, the driven gear 3 also rotates in the direction of the solid line arrow, and the washing liquid passes from the tank (not shown) through the suction passage 4 and the drive gear 2 and the driven gear 3 through the delivery passage 12. It is sent to the delivery passage switching chamber 9, and the delivery passage switching valve 10 switches the delivery passage by the wash liquid pressure, and jets the wash liquid from the delivery outlet 14 to, for example, the rear window of the automobile. At this time, the check valve 6 is opened by the pressure by suction, and the check valve 7 is closed by the pressure by delivery. Next, when the motor rotates in the reverse direction and the drive gear 2 rotates in the direction of the dotted line arrow, the wash liquid passes through the delivery passage 11 and is ejected from the delivery port to, for example, the front window of the automobile. At this time, the check valve 7 is opened and the check valve 6 is closed.
このような構成によれば、駆動歯車2,従動歯車３の正
逆回転によりウオツシヤ液を吸入する２つの吸入用通路
4,5を設けるとともに各吸入用通路4,5に逆止め弁6,7を
設けたことにより、駆動歯車2,従動歯車３の回転により
発生する液圧により一方の逆止め弁６もしくは７は開放
され、他方の逆止め弁７もしくは６は閉塞されることに
より吸入通路が形成されるので、低温時におけるウオツ
シヤ液の粘性の増加によつても噴出圧が変動しないウオ
ツシヤ液供給装置が得られる。According to such a configuration, two suction passages for sucking the wash liquid by the forward and reverse rotations of the drive gear 2 and the driven gear 3 are provided.
Since the check valves 6 and 7 are provided in the intake passages 4 and 5 and the check valves 6 and 7 are provided in the suction passages 4 and 5, one check valve 6 or 7 is operated by the hydraulic pressure generated by the rotation of the drive gear 2 and the driven gear 3. Since the suction passage is formed by opening the check valve 7 or 6 on the other side and closing the other check valve 7 or 6, a jetting liquid supply device in which the jet pressure does not fluctuate even when the viscosity of the washing liquid increases at a low temperature can be obtained. .
以上説明したように本考案は、ウオッシャ液吸入口に
第１の吸入用通路および第２の吸入用通路を設けるとと
もに第１の吸入用通路および第２の吸入用通路に駆動歯
車，従動歯車の回転方向に対応して開閉する第１の逆止
め弁および第２の逆止め弁を設けたことにより、ウオツ
シヤ液の粘性に影響されずに常に一定の噴出圧でウオツ
シヤ液を送出することができ、しかも１枚の従動歯車お
よび２個の逆止め弁を用いて実現できるので、構成が簡
素化され、装置の製造コストが低減できるなどの極めて
優れた効果が得られる。また、駆動歯車および従動歯車
が収容されたギャポンプ室に連結されかつタンクからギ
ャポンプ室にウオッシャ液を注入するバイパスパイプを
設けたことにより、初期時にギャポンプに十分に注水
し、ポンプとしての機動性を高めることができるという
極めて優れた効果が得られる。As described above, according to the present invention, the washer fluid suction port is provided with the first suction passage and the second suction passage, and the first suction passage and the second suction passage are provided with the drive gear and the driven gear. By providing the first check valve and the second check valve that open and close according to the rotation direction, it is possible to always deliver the wash liquid at a constant ejection pressure without being affected by the viscosity of the wash liquid. Moreover, since it can be realized by using one driven gear and two check valves, it is possible to obtain an extremely excellent effect that the configuration is simplified and the manufacturing cost of the device can be reduced. In addition, by providing a bypass pipe that is connected to the gear pump chamber that houses the drive gear and the driven gear and that injects the washer liquid from the tank into the gear pump chamber, it is possible to sufficiently inject water into the gear pump at the initial stage and improve the mobility of the pump. It is possible to obtain an extremely excellent effect that it can be increased.
第１図（ａ），（ｂ）は本考案の一実施例を示す断面
図，その下方向から見た要部平面図、第２図（ａ），
（ｂ）は従来の遠心フアン方式のウオツシヤ液供給装置
の断面図，フアン部の横断面図、第３図（ａ），（ｂ）
は従来のギアポンプを用いたウオツシヤ液供給装置の断
面図，ギア部の横断面図である。 １……ケーシング、２……駆動歯車、３……従動歯車、
4,5……吸入用通路、6,7……逆止め弁、8,9……送出通
路切替室、10……送出通路切替弁、11,12……送出通
路、13,14……送出口、15……バイパスパイプ。1 (a) and 1 (b) are cross-sectional views showing an embodiment of the present invention, a plan view of essential parts seen from below, FIG. 2 (a),
FIG. 3B is a cross-sectional view of a conventional centrifugal fan type wash liquid supply device, a cross-sectional view of a fan portion, and FIGS. 3A and 3B.
FIG. 4A is a cross-sectional view of a wash liquid supply device using a conventional gear pump, and FIG. 1 ... Casing, 2 ... Drive gear, 3 ... Driven gear,
4,5 ... Suction passage, 6,7 ... Check valve, 8,9 ... Sending passage switching chamber, 10 ... Sending passage switching valve, 11,12 ... Sending passage, 13,14 ... Sending Exit, 15 ... Bypass pipe.
Claims (1)
の入り口を有する第１の吸入用通路および第２の吸入用
通路と、 常時は第１の吸入用通路の入り口を閉じており、第１の
吸入用通路内の圧力が減少したときに入り口を開く第１
の逆止め弁と、 常時は第２の吸入用通路の入り口を閉じており、第２の
吸入用通路内の圧力が減少したときに入り口を開く第２
の逆止め弁と、 モータにより回転駆動される駆動歯車とこの駆動歯車に
噛み合う従動歯車とからなり、一方の方向に回転したと
き第１の吸入用通路内の液を吸引して第１の送出通路に
送出し、他方の方向に回転したとき第２の吸入用通路内
の液を吸引して第２の送出通路に送出する駆動手段と、 第１の送出口と第２の送出口の間に配置された弁を有
し、駆動手段によって第１の送出通路に液が送出されて
液圧が発生したとき、その液圧で弁を駆動して第２の送
出口を閉塞するとともに第１の送出口と第１の送出通路
とを連通し、駆動手段によって第２の送出通路に液が送
出されて液圧が発生したとき、その液圧で弁を上記と反
対方向へ駆動して第１の送出口を閉塞するとともに第２
の送出口と第２の送出通路とを連通する送出通路切替手
段と、 駆動歯車および従動歯車が収容されたギャポンプ室に連
結されかつタンクからギャポンプ室にウオッシャ液を注
入するバイパスパイプと、 を設けたことを特徴とするウオッシャ液供給装置。1. A first suction passage and a second suction passage each having an inlet for receiving washer fluid from a tank, and a first suction passage which is normally closed at the first suction passage. No.1 opening the entrance when the pressure in the service passage decreases
Check valve and the inlet of the second suction passage is normally closed, and the inlet is opened when the pressure in the second suction passage decreases.
Check valve, a drive gear that is rotationally driven by a motor, and a driven gear that meshes with the drive gear. When rotating in one direction, the liquid in the first suction passage is sucked and the first delivery is performed. Between the first delivery port and the second delivery port, the drive means for delivering the liquid to the passage and sucking the liquid in the second suction passage to deliver it to the second delivery passage when rotating in the other direction. When the liquid is delivered to the first delivery passage by the drive means to generate a fluid pressure, the valve is driven by the fluid pressure to close the second delivery port and the first delivery passage is closed. When the liquid is delivered to the second delivery passage by the driving means and the fluid pressure is generated, the valve is driven in the opposite direction to the above by the fluid pressure. The second outlet is closed while the first outlet is closed.
And a bypass pipe connected to the gear pump chamber accommodating the drive gear and the driven gear and for injecting the washer liquid from the tank into the gear pump chamber. A washer fluid supply device characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988121358U JPH086647Y2 (en) | 1988-09-16 | 1988-09-16 | Washer liquid supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988121358U JPH086647Y2 (en) | 1988-09-16 | 1988-09-16 | Washer liquid supply device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0241858U JPH0241858U (en) | 1990-03-22 |
| JPH086647Y2 true JPH086647Y2 (en) | 1996-02-28 |
Family
ID=31368294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988121358U Expired - Lifetime JPH086647Y2 (en) | 1988-09-16 | 1988-09-16 | Washer liquid supply device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086647Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55175553U (en) * | 1979-06-05 | 1980-12-16 | ||
| JPS56111292U (en) * | 1980-01-29 | 1981-08-28 |
-
1988
- 1988-09-16 JP JP1988121358U patent/JPH086647Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0241858U (en) | 1990-03-22 |
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