JP7520464B2

JP7520464B2 - Discharge Pump

Info

Publication number: JP7520464B2
Application number: JP2021013809A
Authority: JP
Inventors: 徹當麻
Original assignee: Yoshino Kogyosho Co Ltd
Current assignee: Yoshino Kogyosho Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2024-07-23
Anticipated expiration: 2041-01-29
Also published as: JP2022117227A

Description

本発明は吐出ポンプに関する。 The present invention relates to a discharge pump.

押し下げヘッドと押し下げヘッドから側方に突出するノズルとを有し、押し下げヘッドの押し下げと復帰により、容器本体の内容液をノズル先端部から吐出する吐出ポンプが知られている（例えば、特許文献１参照）。 A discharge pump is known that has a push-down head and a nozzle that protrudes laterally from the push-down head, and that discharges the liquid contents of the container body from the tip of the nozzle by pushing down and returning the push-down head (see, for example, Patent Document 1).

特開２０１１－２５１６９４号公報JP 2011-251694 A

上記のような吐出ポンプは、内容液を吐出させる操作だけで押し下げヘッド上面とノズル上面に内容液を供給できれば望ましい場合がある。その一例として、内容液がアルコール等の殺菌用等の消毒液である場合には、押し下げヘッド上面とノズル上面を消毒された清潔な状態に保つことができるので、使用者が安心して操作することを可能にすることができる。 In some cases, it may be desirable for the above-mentioned discharge pump to be able to supply the liquid contents to the top surface of the push-down head and the top surface of the nozzle simply by discharging the liquid contents. As an example, if the liquid contents is a disinfectant such as alcohol for sterilization, the top surfaces of the push-down head and the nozzle can be kept disinfected and clean, allowing the user to operate the pump with peace of mind.

したがって、本発明の目的は、内容液を吐出させる操作だけで押し下げヘッド上面とノズル上面に内容液を供給可能な吐出ポンプを提供することにある。 The object of the present invention is therefore to provide a discharge pump that can supply liquid contents to the top surface of the push-down head and the top surface of the nozzle simply by discharging the liquid contents.

本発明の吐出ポンプは、押し下げヘッドと押し下げヘッドから側方に突出するノズルとを有し、前記押し下げヘッドの押し下げと復帰により、容器本体の内容液をノズル先端部から吐出する吐出ポンプであって、前記押し下げヘッドから側方に延びるノズル基端部と、基端側から先端側に向けて下方に屈曲する屈曲部を備えるとともに前記ノズル基端部に接続されるノズル屈曲部材と、前記ノズル内の一端から前記ノズル基端部と前記ノズル屈曲部材との間を通ってノズル上面に開口する他端まで延びる流路である接続流路と、前記接続流路の前記他端から押し下げヘッド上面に向けて少なくとも前記ノズル上面上を延びる凹状の流路であるノズル外周面流路と、を有し、前記押し下げヘッドの前記押し下げと前記復帰により、前記内容液を前記接続流路と前記ノズル外周面流路を通じて前記ノズル上面と前記押し下げヘッド上面に供給可能であることを特徴とする。 The discharge pump of the present invention has a push-down head and a nozzle protruding laterally from the push-down head, and is a discharge pump that discharges the liquid contents of the container body from the nozzle tip by pushing down and returning the push-down head, and is characterized in that it has a nozzle base end extending laterally from the push-down head, a nozzle bending member that has a bending portion that bends downward from the base end side to the tip end side and is connected to the nozzle base end, a connection flow path that is a flow path that extends from one end inside the nozzle through between the nozzle base end and the nozzle bending member to the other end that opens on the nozzle top surface, and a nozzle outer peripheral surface flow path that is a concave flow path that extends at least on the nozzle top surface from the other end of the connection flow path toward the push-down head top surface, and is capable of supplying the liquid contents to the nozzle top surface and the push-down head top surface through the connection flow path and the nozzle outer peripheral surface flow path by pushing down and returning the push-down head.

本発明の吐出ポンプは、上記構成において、前記ノズル屈曲部材が、前記接続流路の前記他端を上方から覆う庇部を有するのが好ましい。 In the discharge pump of the present invention having the above-mentioned configuration, it is preferable that the nozzle bending member has a visor portion that covers the other end of the connection flow passage from above.

本発明の吐出ポンプは、上記構成において、前記ノズル外周面流路が、前記接続流路の前記他端から前記押し下げヘッド上面に向けて前記ノズル上面上を延びる溝を有するのが好ましい。 In the discharge pump of the present invention, in the above configuration, it is preferable that the nozzle outer peripheral surface flow path has a groove that extends on the upper surface of the nozzle from the other end of the connection flow path toward the upper surface of the push-down head.

本発明の吐出ポンプは、上記構成において、前記ノズル外周面流路が、前記溝から分岐して前記ノズルの外周面上を下方に向けて延びる１つ以上の副溝を有するのが好ましい。 In the discharge pump of the present invention, in the above configuration, it is preferable that the nozzle outer peripheral surface flow path has one or more sub-grooves that branch off from the groove and extend downward on the outer peripheral surface of the nozzle.

本発明の吐出ポンプは、上記構成において、少なくとも１つの前記副溝が前記ノズルの下面上まで延びるのが好ましい。 In the discharge pump of the present invention, in the above configuration, it is preferable that at least one of the secondary grooves extends onto the underside of the nozzle.

本発明の吐出ポンプは、上記構成において、前記接続流路の前記他端から前記ノズルの外周面上を前記ノズル先端部に向けて延びる凹状の流路である先端側ノズル外周面流路を有するのが好ましい。 In the above configuration, the discharge pump of the present invention preferably has a tip-side nozzle outer peripheral surface flow path that is a concave flow path extending from the other end of the connection flow path along the outer peripheral surface of the nozzle toward the nozzle tip.

本発明の吐出ポンプは、上記構成において、前記押し下げヘッド上面上を上面視で中央側から外周縁側に向けて延びる凹状の流路であるヘッド上面流路を有するのが好ましい。 In the above configuration, the discharge pump of the present invention preferably has a head upper surface flow path that is a concave flow path extending from the center to the outer periphery when viewed from above on the upper surface of the push-down head.

本発明の吐出ポンプは、上記構成において、前記ノズル先端部がノズル内流路を絞る絞り部を有するのが好ましい。 In the discharge pump of the present invention, in the above configuration, it is preferable that the nozzle tip has a constriction portion that constricts the flow path inside the nozzle.

本発明によれば、内容液を吐出させる操作だけで押し下げヘッド上面とノズル上面に内容液を供給可能な吐出ポンプを提供することができる。 The present invention provides a discharge pump that can supply liquid contents to the top surface of the push-down head and the top surface of the nozzle simply by discharging the liquid contents.

本発明の第１実施形態である吐出ポンプを有する吐出容器を示す一部断面側面図である。1 is a partially sectional side view showing a discharge container having a discharge pump according to a first embodiment of the present invention. （ａ）は図１に示す吐出ポンプの押し下げヘッドとノズルとを含む部分の上面図であり、（ｂ）は（ａ）のＡ－Ａ断面図である。2A is a top view of a portion including a push-down head and a nozzle of the discharge pump shown in FIG. 1, and FIG. 2B is a cross-sectional view taken along the line AA of FIG. （ａ）は本発明の第２実施形態である吐出ポンプの押し下げヘッドとノズルとを含む部分の上面図であり、（ｂ）は（ａ）のＢ－Ｂ断面図である。5A is a top view of a portion including a push-down head and a nozzle of a discharge pump according to a second embodiment of the present invention, and FIG. 5B is a cross-sectional view taken along line BB of FIG. 5A. （ａ）は本発明の第３実施形態である吐出ポンプの押し下げヘッドとノズルとを含む部分の上面図であり、（ｂ）は（ａ）のＣ－Ｃ断面図である。10A is a top view of a portion including a push-down head and a nozzle of a discharge pump according to a third embodiment of the present invention, and FIG. 10B is a cross-sectional view taken along the line CC of FIG.

以下、図面を参照しつつ本発明の実施形態を例示説明する。 The following describes an embodiment of the present invention with reference to the drawings.

図１～図２に示す本発明の一実施形態である吐出ポンプ１は、押し下げヘッド２と押し下げヘッド２から側方に突出するノズル３とを有し、押し下げヘッド２の押し下げと復帰により、容器本体４の内容液５をノズル３の先端部であるノズル先端部６から吐出するように構成されている。吐出ポンプ１は、容器本体４の口部４ａに取り付けられることで、吐出容器７を形成している。 The discharge pump 1, which is one embodiment of the present invention shown in Figures 1 and 2, has a push-down head 2 and a nozzle 3 that protrudes laterally from the push-down head 2, and is configured to discharge the content liquid 5 of the container body 4 from the nozzle tip 6, which is the tip of the nozzle 3, by pushing down and returning the push-down head 2. The discharge pump 1 is attached to the mouth 4a of the container body 4 to form a discharge container 7.

なお、本明細書において、上下方向とは操作に応じて押し下げヘッド２が移動する方向を意味し、下方とは押し下げヘッド２が押し下げられる方向を意味し、上方とはその反対方向（つまり押し下げヘッド２が復帰する方向）を意味している。 In this specification, the up and down directions refer to the directions in which the push-down head 2 moves in response to an operation, the down direction refers to the direction in which the push-down head 2 is pushed down, and the up direction refers to the opposite direction (i.e., the direction in which the push-down head 2 returns).

容器本体４は、内容液５を収容する収容空間８を内部に形成しており、収容空間８に連通する開口を形成する口部４ａと、口部４ａの下端に連なる胴部４ｂと、胴部４ｂの下端に連なる図示しない底部と、を有するボトル形状をなしている。容器本体４は例えば合成樹脂製のブロー成形品である。なお、押し下げヘッド２の押し下げ操作ができる限り、容器本体４の形状、材料及び製法は上記に限らない。 The container body 4 has an internal storage space 8 for storing the liquid content 5, and is shaped like a bottle with a mouth 4a that forms an opening that communicates with the storage space 8, a body 4b that is connected to the lower end of the mouth 4a, and a bottom (not shown) that is connected to the lower end of the body 4b. The container body 4 is, for example, a blow-molded product made of synthetic resin. Note that the shape, material, and manufacturing method of the container body 4 are not limited to those described above, as long as the push-down head 2 can be pushed down.

内容液５は特に限定されないが、例えば、アルコール等の殺菌用等の消毒液である。 The liquid content 5 is not particularly limited, but may be, for example, a disinfectant such as alcohol for sterilization.

吐出ポンプ１は、押し下げヘッド２を付勢部材９による付勢力に抗して押し下げる押し下げ操作により液室１０を縮小させて液室１０内の内容液５をノズル３内に送り、押し下げ操作の解除により液室１０を拡大させて容器本体４内の内容液５を液室１０内に送るように構成されている。なお、吐出ポンプ１はこれに限らず例えば、押し下げ操作により液室１０を拡大させて容器本体４内の内容液５を液室１０内に送り、押し下げ操作の解除により液室１０を縮小させて液室１０内の内容液５をノズル３内に送るように構成してもよい。いずれの場合にも、押し下げヘッド２の下端に連なる部材として公知の種々の構造を採用することができる。 The discharge pump 1 is configured to shrink the liquid chamber 10 by pressing down the push-down head 2 against the biasing force of the biasing member 9, thereby sending the liquid content 5 in the liquid chamber 10 into the nozzle 3, and to expand the liquid chamber 10 by releasing the push-down operation, thereby sending the liquid content 5 in the container body 4 into the liquid chamber 10. Note that the discharge pump 1 is not limited to this, and may be configured, for example, to expand the liquid chamber 10 by pressing down, thereby sending the liquid content 5 in the container body 4 into the liquid chamber 10, and to shrink the liquid chamber 10 by releasing the push-down operation, thereby sending the liquid content 5 in the liquid chamber 10 into the nozzle 3. In either case, various known structures can be used as the member connected to the lower end of the push-down head 2.

なお、本実施形態の吐出ポンプ１は、押し下げヘッド２の下端に連なる部材として、ステム１１、ピストンガイド１２、ピストン１３、圧縮ばねで構成される付勢部材９、弁部材１４、吸い上げパイプ１５、シリンダ部材１６、装着キャップ１７、抜け止め部材１８及び外気導入孔封止用ピストン１９を有しており、ピストンガイド１２、ピストン１３、シリンダ部材１６及び弁部材１４によって液室１０を形成している。 The discharge pump 1 of this embodiment has, as components connected to the lower end of the push-down head 2, a stem 11, a piston guide 12, a piston 13, a biasing member 9 consisting of a compression spring, a valve member 14, a suction pipe 15, a cylinder member 16, an attachment cap 17, a retaining member 18, and a piston 19 for sealing the outside air introduction hole, and the piston guide 12, piston 13, cylinder member 16, and valve member 14 form a liquid chamber 10.

図２に示すように、吐出ポンプ１は、押し下げヘッド２とノズル３を構成する部材として、ヘッド部材２０、ノズル屈曲部材２１、ノズル先端部材２２及びノズルアダプタ部材２３を有している。ヘッド部材２０、ノズル屈曲部材２１、ノズル先端部材２２及びノズルアダプタ部材２３はそれぞれ、合成樹脂の射出成形によって一体に形成されている。なお、これらの部材の材料及び製法は合成樹脂の射出成形に限らない。 As shown in FIG. 2, the discharge pump 1 has a head member 20, a nozzle bending member 21, a nozzle tip member 22, and a nozzle adapter member 23 as members that constitute the push-down head 2 and the nozzle 3. The head member 20, the nozzle bending member 21, the nozzle tip member 22, and the nozzle adapter member 23 are each integrally formed by injection molding of synthetic resin. Note that the materials and manufacturing methods of these members are not limited to injection molding of synthetic resin.

ヘッド部材２０は、押し下げヘッド２と、押し下げヘッド２から側方に延びるとともにノズル３の基端部であるノズル基端部２４と、を有している。 The head member 20 has a push-down head 2 and a nozzle base end 24 that extends laterally from the push-down head 2 and is the base end of the nozzle 3.

図２（ｂ）に示すように、押し下げヘッド２は、天壁２ａと、天壁２ａの外周縁から垂下する外周壁２ｂと、ステム１１の上端に接続された内周壁２ｃと、外周壁２ｂと内周壁２ｃとの間で天壁２ａから垂下する螺筒２ｄと、を有している。また、押し下げヘッド２は、ステム１１内の流路に連通するとともに上下方向に延びる縦流路２５ａと、縦流路２５ａをノズル基端部２４内の流路に連通させる横流路２５ｂと、からなる内部流路（以下、ヘッド内流路２５ともいう）を有している。縦流路２５ａは内周壁２ｃの内側に形成され、横流路２５ｂは内周壁２ｃの上端部から外周壁２ｂまで側方に延びて設けられた横流路形成部２ｅによって形成されている。 As shown in FIG. 2(b), the push-down head 2 has a top wall 2a, an outer peripheral wall 2b that hangs down from the outer edge of the top wall 2a, an inner peripheral wall 2c that is connected to the upper end of the stem 11, and a screw tube 2d that hangs down from the top wall 2a between the outer peripheral wall 2b and the inner peripheral wall 2c. The push-down head 2 also has an internal flow path (hereinafter also referred to as the head internal flow path 25) that consists of a vertical flow path 25a that communicates with the flow path in the stem 11 and extends in the vertical direction, and a horizontal flow path 25b that connects the vertical flow path 25a to the flow path in the nozzle base end 24. The vertical flow path 25a is formed inside the inner peripheral wall 2c, and the horizontal flow path 25b is formed by a horizontal flow path forming part 2e that is provided to extend laterally from the upper end of the inner peripheral wall 2c to the outer peripheral wall 2b.

図２（ａ）に示すように、押し下げ操作を受ける被操作部となる押し下げヘッド２の上面（つまり天壁２ａの上面）である押し下げヘッド上面２６は、上面視で円形をなしている。なお、押し下げヘッド上面２６の上面視形状は円形に限らず、楕円形、多角形など、適宜変更が可能である。 As shown in FIG. 2(a), the push-down head top surface 26, which is the top surface of the push-down head 2 (i.e., the top surface of the top wall 2a) that is the operated part that receives the push-down operation, is circular when viewed from above. Note that the shape of the push-down head top surface 26 when viewed from above is not limited to a circle, but can be changed as appropriate to an ellipse, polygon, or the like.

図２に示すように、ノズル基端部２４は、押し下げヘッド２の上下方向に沿う中心軸線（以下、ヘッド中心軸線Ｏともいう）の径方向（以下、ヘッド径方向ともいう）に沿って延びる円筒状をなしており、外周壁２ｂから側方にヘッド径方向に沿って延びている。以下、説明の便宜上、ノズル基端部２４が延びる方向を前後方向ともいい、前後方向に沿ってノズル３の基端側から先端側に向かう方向を前方ともいい、その反対方向を後方ともいう。 As shown in FIG. 2, the nozzle base end 24 is cylindrical and extends along the radial direction (hereinafter also referred to as the head radial direction) of the central axis (hereinafter also referred to as the head central axis O) along the up-down direction of the push-down head 2, and extends laterally from the outer peripheral wall 2b along the head radial direction. Hereinafter, for ease of explanation, the direction in which the nozzle base end 24 extends is also referred to as the front-rear direction, the direction from the base end side to the tip end side of the nozzle 3 along the front-rear direction is also referred to as the forward direction, and the opposite direction is also referred to as the rearward direction.

ノズル屈曲部材２１は、基端側から先端側に向けて下方に屈曲する屈曲部２７を有する円筒状をなしており、ノズル基端部２４の先端側に配置されるようにノズル基端部２４に嵌合によって接続されている。 The nozzle bending member 21 is cylindrical with a bending portion 27 that bends downward from the base end to the tip end, and is connected to the nozzle base end 24 by fitting so that it is positioned at the tip end of the nozzle base end 24.

また、ノズル屈曲部材２１は、屈曲部２７よりも基端側においてノズル３の長さ方向（ノズル３内の流路であるノズル内流路２８の流れ方向）に沿うノズル３の中心軸線（以下、ノズル中心軸線ともいう）を周回する方向（以下、ノズル周方向ともいう）に環状に延びるとともにノズル基端部２４の先端面（前端面）に対向して配置される基端側段差面２９と、基端側段差面２９から後方に延びるとともにノズル基端部２４に挿入される基端側挿入筒３０と、を有している。基端側挿入筒３０は外径が後方に向けてやや先細となる円筒状をなしており、基端側挿入筒３０の外周面はノズル基端部２４の内周面に接している。また、基端側段差面２９はノズル基端部２４の先端面に接している。 The nozzle bending member 21 has a base end step surface 29 that extends annularly in a direction (hereinafter also referred to as the nozzle circumferential direction) around the central axis of the nozzle 3 (hereinafter also referred to as the nozzle central axis) along the length direction of the nozzle 3 (the flow direction of the nozzle internal flow path 28, which is the flow path inside the nozzle 3) on the base end side from the bent portion 27 and is arranged opposite the tip surface (front end surface) of the nozzle base end 24, and a base end insertion tube 30 that extends rearward from the base end step surface 29 and is inserted into the nozzle base end 24. The base end insertion tube 30 has a cylindrical shape with an outer diameter that tapers slightly toward the rear, and the outer peripheral surface of the base end insertion tube 30 is in contact with the inner peripheral surface of the nozzle base end 24. The base end step surface 29 is in contact with the tip surface of the nozzle base end 24.

また、ノズル屈曲部材２１は、屈曲部２７よりも先端側においてノズル周方向に環状に延びるとともにノズル先端部材２２の基端面に対向して配置される先端側段差面３１と、先端側段差面３１から先端側に延びるとともにノズル先端部材２２に挿入される先端側挿入筒３２と、を有している。先端側挿入筒３２は外径が先端側に向けてやや先細となる円筒状をなしており、先端側挿入筒３２の外周面はノズル先端部材２２の内周面に接している。また、先端側段差面３１はノズル先端部材２２の基端面に接している。 The nozzle bending member 21 also has a tip side step surface 31 that extends annularly in the nozzle circumferential direction on the tip side of the bending portion 27 and is arranged opposite the base end face of the nozzle tip member 22, and a tip side insertion tube 32 that extends from the tip side step surface 31 to the tip side and is inserted into the nozzle tip member 22. The tip side insertion tube 32 has a cylindrical shape with an outer diameter that tapers slightly toward the tip side, and the outer peripheral surface of the tip side insertion tube 32 is in contact with the inner peripheral surface of the nozzle tip member 22. The tip side step surface 31 is in contact with the base end face of the nozzle tip member 22.

ノズル先端部材２２は、ノズル中心軸線に沿って延びる円筒状の筒壁２２ａと、筒壁２２ａの先端部からノズル中心軸線に向けて延びる先端面壁２２ｂと、を有しており、先端面壁２２ｂの中心（ノズル中心軸線上）に吐出口２２ｃが設けられている。ノズル屈曲部材２１の先端側挿入筒３２は筒壁２２ａに挿入されて筒壁２２ａの内周面に接し、ノズル屈曲部材２１の先端側段差面３１は筒壁２２ａの基端面に接している。ノズル屈曲部材２１の先端側挿入筒３２の先端面と先端面壁２２ｂとの間にはノズルアダプタ部材２３を保持するための隙間である保持隙間が設けられている。 The nozzle tip member 22 has a cylindrical tube wall 22a extending along the nozzle central axis, and a tip surface wall 22b extending from the tip of the tube wall 22a toward the nozzle central axis, with a discharge port 22c provided at the center of the tip surface wall 22b (on the nozzle central axis). The tip side insertion tube 32 of the nozzle bending member 21 is inserted into the tube wall 22a and contacts the inner peripheral surface of the tube wall 22a, and the tip side step surface 31 of the nozzle bending member 21 contacts the base end surface of the tube wall 22a. A holding gap, which is a gap for holding the nozzle adapter member 23, is provided between the tip surface of the tip side insertion tube 32 of the nozzle bending member 21 and the tip surface wall 22b.

ノズルアダプタ部材２３は、ノズル先端部６の内部に配置され、保持されている。ノズルアダプタ部材２３は、先端側挿入筒３２の内周面と筒壁２２ａの内周面とに対向する外周面と、先端面壁２２ｂの内面に対向する先端面と、を有している。ノズルアダプタ部材２３の外周面には、ノズルアダプタ部材２３を保持するために保持隙間に配置される係止部２３ａが設けられている。 The nozzle adapter member 23 is disposed and held inside the nozzle tip 6. The nozzle adapter member 23 has an outer peripheral surface that faces the inner peripheral surface of the tip-side insertion tube 32 and the inner peripheral surface of the tube wall 22a, and a tip surface that faces the inner surface of the tip surface wall 22b. The outer peripheral surface of the nozzle adapter member 23 is provided with a locking portion 23a that is disposed in the holding gap to hold the nozzle adapter member 23.

ノズルアダプタ部材２３は、内容液５を吐出口２２ｃから霧状に吐出させるようにノズル内流路２８を絞る絞り部３３を構成している。つまり、ノズルアダプタ部材２３よりも基端側の流路は、先端側挿入筒３２の内周面とノズルアダプタ部材２３の外周面との間、筒壁２２ａの内周面とノズルアダプタ部材２３の外周面との間、そして、先端面壁２２ｂの内面とノズルアダプタ部材２３の先端面との間を順次通る流路である先端流路３４を介して吐出口２２ｃに連通している。 The nozzle adaptor member 23 forms a constriction section 33 that constricts the nozzle internal flow path 28 so that the content liquid 5 is discharged in a mist form from the discharge port 22c. In other words, the flow path on the base end side of the nozzle adaptor member 23 is connected to the discharge port 22c via the tip flow path 34, which is a flow path that passes between the inner peripheral surface of the tip side insertion tube 32 and the outer peripheral surface of the nozzle adaptor member 23, between the inner peripheral surface of the tube wall 22a and the outer peripheral surface of the nozzle adaptor member 23, and between the inner surface of the tip surface wall 22b and the tip surface of the nozzle adaptor member 23 in this order.

したがって、吐出ポンプ１は、押し下げ操作とその解除により、内容液５をヘッド内流路２５とノズル内流路２８を通して吐出口２２ｃから吐出することができる。 Therefore, by pressing down the discharge pump 1 and then releasing it, the liquid content 5 can be discharged from the discharge port 22c through the head internal flow path 25 and the nozzle internal flow path 28.

また、ノズル３は、ノズル３内の一端３５ａからノズル基端部２４とノズル屈曲部材２１との間を通ってノズル３の上面であるノズル上面３６に開口する他端３５ｂまで延びる流路である接続流路３５を有している。接続流路３５は、基端側挿入筒３０の上面上を前後方向に沿って延びる溝である横溝３５ｃと、横溝３５ｃの前端に連通するとともに基端側段差面２９の上部において基端側段差面２９上を上下方向に沿って延びる溝である縦溝３５ｄと、を含んでいる。また、ノズル屈曲部材２１は、接続流路３５の他端３５ｂを上方から覆う庇部３７を有している。したがって、接続流路３５の他端３５ｂは庇部３７で終端する縦溝３５ｄの上端で構成されている。ノズル屈曲部材２１が庇部３７を有することにより、接続流路３５の他端３５ｂはノズル上面３６に後方に向けて開口している。 The nozzle 3 also has a connection flow passage 35, which is a flow passage extending from one end 35a in the nozzle 3 through between the nozzle base end 24 and the nozzle bending member 21 to the other end 35b that opens on the nozzle upper surface 36, which is the upper surface of the nozzle 3. The connection flow passage 35 includes a horizontal groove 35c that is a groove extending along the front-rear direction on the upper surface of the base-end side insertion tube 30, and a vertical groove 35d that is a groove that communicates with the front end of the horizontal groove 35c and extends along the top-bottom direction on the base-end side step surface 29 at the upper part of the base-end side step surface 29. The nozzle bending member 21 also has a visor portion 37 that covers the other end 35b of the connection flow passage 35 from above. Therefore, the other end 35b of the connection flow passage 35 is composed of the upper end of the vertical groove 35d that terminates at the visor portion 37. Since the nozzle bending member 21 has the visor portion 37, the other end 35b of the connection flow passage 35 opens rearward on the nozzle upper surface 36.

ヘッド部材２０は、接続流路３５の他端３５ｂから押し下げヘッド上面２６に向けて少なくともノズル上面３６上を延びる凹状の流路であるノズル外周面流路３８を有している。ノズル外周面流路３８は、接続流路３５の他端３５ｂから押し下げヘッド上面２６に向けて前後方向に沿ってノズル上面３６上を押し下げヘッド上面２６の上面視中央まで延びる溝３８ａで構成されている。 The head member 20 has a nozzle outer peripheral surface flow path 38, which is a concave flow path that extends at least on the nozzle upper surface 36 from the other end 35b of the connection flow path 35 toward the push-down head upper surface 26. The nozzle outer peripheral surface flow path 38 is composed of a groove 38a that extends from the other end 35b of the connection flow path 35 toward the push-down head upper surface 26 in the front-to-rear direction on the nozzle upper surface 36 to the center of the push-down head upper surface 26 when viewed from above.

したがって、吐出ポンプ１は、押し下げヘッド２の押し下げと復帰により、内容液５を接続流路３５とノズル外周面流路３８を通じてノズル上面３６と押し下げヘッド上面２６に供給可能である。つまり、内容液５は、押し下げ操作とその解除により、ノズル内流路２８から接続流路３５の一端３５ａに流入して接続流路３５をその他端３５ｂまで流れ、庇部３７によって流れの方向が上方から後方に曲げられて、ノズル外周面流路３８の前端に流入し、ノズル外周面流路３８をその後端まで流れることができる。 Therefore, by pressing down and returning the push-down head 2, the discharge pump 1 can supply the content liquid 5 to the nozzle top surface 36 and the push-down head top surface 26 through the connection flow path 35 and the nozzle outer peripheral surface flow path 38. In other words, by pressing down and releasing it, the content liquid 5 flows from the nozzle internal flow path 28 into one end 35a of the connection flow path 35 and flows through the connection flow path 35 to the other end 35b, and the flow direction is bent from above to the rear by the eaves portion 37, so that the content liquid 5 flows into the front end of the nozzle outer peripheral surface flow path 38 and can flow through the nozzle outer peripheral surface flow path 38 to its rear end.

このように、本実施形態の吐出ポンプ１は、内容液５を吐出させる操作だけで押し下げヘッド上面２６とノズル上面３６に内容液５を供給可能である。したがって、例えば、内容液５をアルコール等の殺菌用等の消毒液として使用する場合には、押し下げヘッド上面２６とノズル上面３６を消毒された清潔な状態に保つことができるので、使用者が安心して操作することを可能にすることができる。 In this way, the discharge pump 1 of this embodiment can supply the liquid contents 5 to the push-down head top surface 26 and the nozzle top surface 36 simply by discharging the liquid contents 5. Therefore, for example, when the liquid contents 5 are used as a disinfectant such as alcohol for sterilization, the push-down head top surface 26 and the nozzle top surface 36 can be kept in a disinfected and clean state, allowing the user to operate the pump with peace of mind.

また、本実施形態によれば、庇部３７を設けていることにより、接続流路３５の他端３５ｂで内容液５が上方に飛び出ることを防止しつつ当該他端３５ｂでの十分に大きな流量を確保しやすくすることができる。 In addition, according to this embodiment, the provision of the eaves portion 37 makes it easier to ensure a sufficiently large flow rate at the other end 35b of the connection flow path 35 while preventing the content liquid 5 from spilling out upward at the other end 35b.

また、本実施形態によれば、ノズル外周面流路３８が溝３８ａを有していることにより、内容液５をノズル上面３６と押し下げヘッド上面２６に供給しやすくすることができる。 In addition, according to this embodiment, the nozzle outer peripheral surface flow path 38 has a groove 38a, which makes it easier to supply the content liquid 5 to the nozzle upper surface 36 and the push-down head upper surface 26.

また、本実施形態によれば、ノズル先端部６に絞り部３３を設けていることにより、操作時にノズル内流路２８の圧力を絞り部３３を設けない場合よりも高めることができるため、接続流路３５とノズル外周面流路３８を通じてノズル上面３６と押し下げヘッド上面２６に供給される内容液５の十分に大きな流量を確保しやすくすることができる。 In addition, according to this embodiment, by providing a constriction section 33 at the nozzle tip 6, the pressure in the nozzle internal flow path 28 during operation can be increased compared to when the constriction section 33 is not provided, making it easier to ensure a sufficiently large flow rate of the content liquid 5 supplied to the nozzle top surface 36 and the push-down head top surface 26 through the connection flow path 35 and the nozzle outer peripheral surface flow path 38.

図３に示す第２実施形態や図４に示す第３実施形態のように、ノズル外周面流路３８は、溝３８ａから分岐してノズル基端部２４の外周面上を下方に向けて延びる１つ以上の副溝３８ｂを有していてもよく、副溝３８ｂを通じて内容液５をノズル３の外周面のより広い範囲に供給することができる。。第２実施形態、第３実施形態のいずれにおいても、副溝３８ｂは溝３８ａの両側壁にそれぞれ５つの径１０個が設けられており、各々の副溝３８ｂは溝３８ａから斜め後方に向けて分岐している。なお、副溝３８ｂの数は適宜変更が可能である。また、各々の副溝３８ｂは第２実施形態ではノズル上面３６上に収まっているが、第３実施形態ではノズル下面３９上まで延びている。 As in the second embodiment shown in FIG. 3 and the third embodiment shown in FIG. 4, the nozzle outer peripheral surface flow path 38 may have one or more sub-grooves 38b branching from the groove 38a and extending downward on the outer peripheral surface of the nozzle base end 24, and the content liquid 5 can be supplied to a wider range of the outer peripheral surface of the nozzle 3 through the sub-grooves 38b. . In both the second and third embodiments, the sub-grooves 38b are provided on both side walls of the groove 38a, with five diameters of ten, and each of the sub-grooves 38b branches obliquely backward from the groove 38a. The number of sub-grooves 38b can be changed as appropriate. In addition, each of the sub-grooves 38b is contained on the nozzle upper surface 36 in the second embodiment, but extends to the nozzle lower surface 39 in the third embodiment.

また、吐出ポンプ１は、第２実施形態や第３実施形態のように、接続流路３５の他端３５ｂからノズル３の外周面上をノズル先端部６に向けて延びる凹状の流路である先端側ノズル外周面流路４０を有していてもよく、先端側ノズル外周面流路４０を通じて内容液５をノズル３の外周面のより広い範囲に供給することができる。第２実施形態、第３実施形態のいずれにおいても、先端側ノズル外周面流路４０は複数の溝で構成されている。また、先端側ノズル外周面流路４０は第２実施形態ではノズル上面３６上に収まっているが、第３実施形態ではノズル下面３９上まで延びている。 The discharge pump 1 may also have a tip-side nozzle outer peripheral surface flow path 40, which is a concave flow path extending from the other end 35b of the connection flow path 35 on the outer peripheral surface of the nozzle 3 toward the nozzle tip 6, as in the second and third embodiments, and the content liquid 5 can be supplied to a wider range of the outer peripheral surface of the nozzle 3 through the tip-side nozzle outer peripheral surface flow path 40. In both the second and third embodiments, the tip-side nozzle outer peripheral surface flow path 40 is composed of multiple grooves. In addition, the tip-side nozzle outer peripheral surface flow path 40 is contained on the nozzle upper surface 36 in the second embodiment, but extends to the nozzle lower surface 39 in the third embodiment.

また、吐出ポンプ１は、第２実施形態や第３実施形態のように、押し下げヘッド上面２６上を上面視で中央側から外周縁側（ヘッド中心軸線Ｏの径方向外側）に向けて延びる凹状の流路であるヘッド上面流路４１を有していてもよく、ヘッド上面流路４１を通じて内容液５を押し下げヘッド上面２６のより広い範囲に供給することができる。ヘッド上面流路４１は第２実施形態では上面視でヘッド径方向に沿って放射状に延びる複数（図示の例では９つであるが適宜増減可能）の溝で構成されているが、第３実施形態では上面視で渦巻状に延びる溝で構成されている。 The discharge pump 1 may have a head top flow path 41, which is a concave flow path extending from the center to the outer periphery (radially outward from the head central axis O) on the push-down head top surface 26 as in the second and third embodiments, and the content liquid 5 can be supplied to a wider range of the push-down head top surface 26 through the head top flow path 41. In the second embodiment, the head top flow path 41 is composed of multiple grooves (nine in the illustrated example, but this can be increased or decreased as appropriate) extending radially along the head radial direction as viewed from above, but in the third embodiment, it is composed of grooves extending in a spiral shape as viewed from above.

本発明は前記実施形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能である。 The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the invention.

したがって、前記実施形態の吐出ポンプ１は、例えば以下に述べるような種々の変更が可能である。 Therefore, the discharge pump 1 of the above embodiment can be modified in various ways, for example as described below.

前記実施形態の吐出ポンプ１は、押し下げヘッド２と押し下げヘッド２から側方に突出するノズル３とを有し、押し下げヘッド２の押し下げと復帰により、容器本体４の内容液５をノズル先端部６から吐出する吐出ポンプ１であって、押し下げヘッド２から側方に延びるノズル基端部２４と、基端側から先端側に向けて下方に屈曲する屈曲部２７を備えるとともにノズル基端部２４に接続されるノズル屈曲部材２１と、ノズル３内の一端３５ａからノズル基端部２４とノズル屈曲部材２１との間を通ってノズル上面３６に開口する他端３５ｂまで延びる流路である接続流路３５と、接続流路３５の他端３５ｂから押し下げヘッド上面２６に向けて少なくともノズル上面３６上を延びる凹状の流路であるノズル外周面流路３８と、を有し、押し下げヘッド２の押し下げと復帰により、内容液５を接続流路３５とノズル外周面流路３８を通じてノズル上面３６と押し下げヘッド上面２６に供給可能である限り、種々変更可能である。 The discharge pump 1 of the above embodiment has a push-down head 2 and a nozzle 3 protruding laterally from the push-down head 2, and discharges the content liquid 5 of the container body 4 from the nozzle tip 6 by pushing down and returning the push-down head 2. It has a nozzle base end 24 extending laterally from the push-down head 2, a nozzle bending member 21 having a bending portion 27 bending downward from the base end side to the tip side and connected to the nozzle base end 24, a connection flow path 35 that is a flow path that extends from one end 35a in the nozzle 3 through between the nozzle base end 24 and the nozzle bending member 21 to the other end 35b that opens on the nozzle top surface 36, and a nozzle outer peripheral surface flow path 38 that is a concave flow path that extends at least on the nozzle top surface 36 from the other end 35b of the connection flow path 35 toward the push-down head top surface 26, and can be modified in various ways as long as the content liquid 5 can be supplied to the nozzle top surface 36 and the push-down head top surface 26 through the connection flow path 35 and the nozzle outer peripheral surface flow path 38 by pushing down and returning the push-down head 2.

なお、ノズル屈曲部材２１が、接続流路３５の他端３５ｂを上方から覆う庇部３７を有するのが好ましい。 It is preferable that the nozzle bending member 21 has a visor portion 37 that covers the other end 35b of the connection flow passage 35 from above.

また、吐出ポンプ１は、ノズル外周面流路３８が、接続流路３５の他端３５ｂから押し下げヘッド上面２６に向けてノズル上面３６上を延びる溝３８ａを有するのが好ましい。 In addition, it is preferable that the nozzle outer peripheral surface flow path 38 of the discharge pump 1 has a groove 38a that extends on the nozzle upper surface 36 from the other end 35b of the connection flow path 35 toward the push-down head upper surface 26.

また、吐出ポンプ１は、ノズル外周面流路３８が、溝３８ａから分岐してノズル３の外周面上を下方に向けて延びる１つ以上の副溝３８ｂを有するのが好ましい。 In addition, it is preferable that the nozzle outer peripheral surface flow path 38 of the discharge pump 1 has one or more sub-grooves 38b that branch off from the groove 38a and extend downward on the outer peripheral surface of the nozzle 3.

また、吐出ポンプ１は、少なくとも１つの副溝３８ｂがノズル３の下面上まで延びるのが好ましい。 It is also preferable that at least one of the secondary grooves 38b of the discharge pump 1 extends onto the underside of the nozzle 3.

また、吐出ポンプ１は、接続流路３５の他端３５ｂからノズル３の外周面上をノズル先端部６に向けて延びる凹状の流路である先端側ノズル外周面流路４０を有するのが好ましい。 The discharge pump 1 also preferably has a tip-side nozzle outer peripheral surface flow path 40, which is a concave flow path that extends from the other end 35b of the connection flow path 35 along the outer peripheral surface of the nozzle 3 toward the nozzle tip 6.

また、吐出ポンプ１は、押し下げヘッド上面２６上を上面視で中央側から外周縁側に向けて延びる凹状の流路であるヘッド上面流路４１を有するのが好ましい。 In addition, it is preferable that the discharge pump 1 has a head top surface flow path 41, which is a concave flow path that extends from the center toward the outer periphery when viewed from above on the push-down head top surface 26.

また、吐出ポンプ１は、ノズル先端部６がノズル内流路２８を絞る絞り部３３を有するのが好ましい。 It is also preferable that the nozzle tip 6 of the discharge pump 1 has a constriction section 33 that constricts the nozzle internal flow path 28.

１吐出ポンプ
２押し下げヘッド
２ａ天壁
２ｂ外周壁
２ｃ内周壁
２ｄ螺筒
２ｅ横流路形成部
３ノズル
４容器本体
４ａ口部
４ｂ胴部
５内容液
６ノズル先端部
７吐出容器
８収容空間
９付勢部材
１０液室
１１ステム
１２ピストンガイド
１３ピストン
１４弁部材
１５吸い上げパイプ
１６シリンダ部材
１７装着キャップ
１８抜け止め部材
１９外気導入孔封止用ピストン
２０ヘッド部材
２１ノズル屈曲部材
２２ノズル先端部材
２２ａ筒壁
２２ｂ先端面壁
２２ｃ吐出口
２３ノズルアダプタ部材
２３ａ係止部
２４ノズル基端部
２５ヘッド内流路
２５ａ縦流路
２５ｂ横流路
２６押し下げヘッド上面
２７屈曲部
２８ノズル内流路
２９基端側段差面
３０基端側挿入筒
３１先端側段差面
３２先端側挿入筒
３３絞り部
３４先端流路
３５接続流路
３５ａ一端
３５ｂ他端
３５ｃ横溝
３５ｄ縦溝
３６ノズル上面
３７庇部
３８ノズル外周面流路
３８ａ溝
３８ｂ副溝
３９ノズル下面
４０先端側ノズル外周面流路
４１ヘッド上面流路
Ｏヘッド中心軸線 LIST OF SYMBOLS 1 Discharge pump 2 Push-down head 2a Top wall 2b Outer peripheral wall 2c Inner peripheral wall 2d Screw tube 2e Horizontal flow path forming section 3 Nozzle 4 Container body 4a Mouth section 4b Body section 5 Content liquid 6 Nozzle tip section 7 Discharge container 8 Storage space 9 Pressing member 10 Liquid chamber 11 Stem 12 Piston guide 13 Piston 14 Valve member 15 Suction pipe 16 Cylinder member 17 Mounting cap 18 Stop member 19 Piston for sealing outside air introduction hole 20 Head member 21 Nozzle bending member 22 Nozzle tip member 22a Cylinder wall 22b Tip surface wall 22c Discharge port 23 Nozzle adapter member 23a Engagement section 24 Nozzle base end section 25 Head internal flow path 25a Vertical flow path 25b Horizontal flow path 26 Push-down head upper surface 27 Bending section 28 Nozzle internal flow path 29 Base end side step surface 30 Base end side insertion tube 31 Tip side step surface 32 Tip side insertion tube 33 Constriction portion 34 Tip flow path 35 Connection flow path 35a One end 35b Other end 35c Horizontal groove 35d Vertical groove 36 Nozzle upper surface 37 Eaves portion 38 Nozzle outer circumferential surface flow path 38a Groove 38b Sub-groove 39 Nozzle lower surface 40 Tip side nozzle outer circumferential surface flow path 41 Head upper surface flow path O Head central axis

Claims

A discharge pump having a depression head and a nozzle protruding laterally from the depression head, the liquid contained in a container body being discharged from a tip of the nozzle by depression and return of the depression head,
a nozzle base end extending laterally from the hold-down head;
a nozzle bending member having a bending portion bending downward from a base end side toward a tip end side and connected to the nozzle base end;
a connecting flow passage that is a flow passage extending from one end within the nozzle through between the nozzle base end portion and the nozzle bending member to the other end that opens on an upper surface of the nozzle;
a nozzle outer peripheral surface flow path that is a concave flow path extending at least on the nozzle upper surface from the other end of the connection flow path toward the upper surface of the push-down head,
A discharge pump, characterized in that the content liquid can be supplied to an upper surface of the nozzle and an upper surface of the push-down head through the connecting flow path and the nozzle outer peripheral surface flow path by the pushing down and returning of the push-down head.

The discharge pump according to claim 1 , wherein the nozzle bending member has a visor portion that covers the other end of the connection flow passage from above.

The discharge pump according to claim 1 or 2, wherein the nozzle outer peripheral surface flow passage has a groove extending on the nozzle upper surface from the other end of the connection flow passage toward the upper surface of the push-down head.

The discharge pump according to claim 3, wherein the nozzle outer peripheral surface flow path has one or more sub-grooves that branch off from the groove and extend downward on the outer peripheral surface of the nozzle.

The discharge pump of claim 4, wherein at least one of the secondary grooves extends onto the underside of the nozzle.

The discharge pump according to any one of claims 1 to 5, which has a tip-side nozzle outer peripheral surface flow path that is a concave flow path extending from the other end of the connection flow path along the outer peripheral surface of the nozzle toward the nozzle tip.

The discharge pump according to any one of claims 1 to 6, which has a head upper surface flow path that is a concave flow path extending from the center to the outer periphery when viewed from above on the upper surface of the push-down head.

The discharge pump according to any one of claims 1 to 7, wherein the nozzle tip has a constriction portion that constricts the flow path inside the nozzle.