JP7745519B2 - Discharge member - Google Patents
Discharge memberInfo
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- JP7745519B2 JP7745519B2 JP2022105995A JP2022105995A JP7745519B2 JP 7745519 B2 JP7745519 B2 JP 7745519B2 JP 2022105995 A JP2022105995 A JP 2022105995A JP 2022105995 A JP2022105995 A JP 2022105995A JP 7745519 B2 JP7745519 B2 JP 7745519B2
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Description
本発明は、吐出部材に関する。 The present invention relates to a discharge member.
従来から、内容物が収容された容器本体の口部に装着される本体筒と、先端部に吐出孔が形成され、基端部が本体筒に一方向に延びる回転軸線を中心に回転可能に支持された吐出筒と、を備えた吐出部材として、例えば下記特許文献１に示されるように、吐出筒の基端部に、前記一方向から見て、回転軸線回りに周回する周方向に延び、かつ吐出筒の回転軸線回りの回転移動時に、本体筒に摺接する摺接面が形成され、本体筒に、摺接面に向けて開口した連通孔が形成され、摺接面に、吐出孔と連通し、かつ連通孔と連通可能な導入孔が開口し、吐出筒は、摺接面が、本体筒における連通孔の開口周縁部に液密に当接した状態で、導入孔と連通孔とが連通する吐出位置と、導入孔と連通孔との連通を遮断する遮断位置と、の間を、回転軸線回りに回転可能に設けられている構成が知られている。 A known discharge member includes a main body tube that is attached to the mouth of a container body containing contents, and a discharge tube that has a discharge hole formed at its tip and a base end that is supported on the main body tube so that it can rotate about a rotation axis that extends in one direction. For example, as shown in Patent Document 1 below, the base end of the discharge tube is formed with a sliding surface that extends circumferentially around the rotation axis when viewed from the one direction and that comes into sliding contact with the main body tube as the discharge tube rotates about the rotation axis. The main body tube is formed with a communication hole that opens toward the sliding surface, and an introduction hole that communicates with the discharge hole and can also communicate with the communication hole is opened in the sliding surface. The discharge tube is rotatable about the rotation axis between a discharge position in which the introduction hole and the communication hole are in communication with each other, and a blocking position in which communication between the introduction hole and the communication hole is blocked, with the sliding surface in liquid-tight contact with the periphery of the opening of the communication hole in the main body tube.
しかしながら、吐出筒の摺接面と、本体筒における連通孔の開口周縁部と、の間のシール性を確保することが困難であるという問題があった。 However, there was a problem in that it was difficult to ensure a seal between the sliding surface of the discharge tube and the periphery of the opening of the communication hole in the main tube.
本発明は、吐出筒の摺接面と、本体筒における連通孔の開口周縁部と、の間のシール性を確保することができる吐出部材を提供する。 The present invention provides a discharge member that ensures a seal between the sliding contact surface of the discharge tube and the periphery of the opening of the communication hole in the main tube.
本発明の一態様に係る吐出部材は、本体筒と、先端部に吐出孔が形成され、基端部が前記本体筒に一方向に延びる回転軸線を中心に回転可能に支持された吐出筒と、を備え、前記吐出筒の基端部に、前記一方向から見て、前記回転軸線回りに周回する周方向に延び、かつ前記吐出筒の前記回転軸線回りの回転移動時に、前記本体筒に摺接する摺接面が形成され、前記本体筒に、前記摺接面に向けて開口した連通孔が形成され、前記摺接面に、前記吐出孔と連通し、かつ前記連通孔と連通可能な導入孔が開口し、前記吐出筒は、前記摺接面が、前記本体筒における前記連通孔の開口周縁部に液密に当接した状態で、前記導入孔と前記連通孔とが連通する吐出位置と、前記導入孔と前記連通孔との連通を遮断する遮断位置と、の間を、前記回転軸線回りに回転可能に設けられ、前記摺接面は、前記吐出筒が前記遮断位置に位置したときに、前記本体筒における前記連通孔の開口周縁部に液密に当接する遮断シール部を備え、前記吐出筒の基端部のうちの前記一方向を向く端面において、前記一方向から見て前記回転軸線と前記遮断シール部との間に位置する部分に、前記一方向に窪む、若しくは前記一方向に貫く肉抜き部が形成されている。 A discharge member according to one aspect of the present invention comprises a main body tube and a discharge tube having a discharge hole formed at its tip end and a base end supported on the main body tube so as to be rotatable about a rotation axis extending in one direction. The base end of the discharge tube is formed with a sliding surface that extends circumferentially around the rotation axis when viewed from the one direction and that slides against the main body tube when the discharge tube rotates about the rotation axis. The main body tube is formed with a communication hole that opens toward the sliding surface. An introduction hole that communicates with the discharge hole and can communicate with the communication hole opens in the sliding surface. The discharge tube is configured such that the sliding surface is in contact with the circumferential surface of the main body tube. The discharge tube is rotatable about the rotation axis between a discharge position where the introduction hole and the communication hole are in fluid-tight contact with the opening periphery of the through hole and a blocking position where the communication between the introduction hole and the communication hole is blocked, and the sliding surface is provided with a blocking seal portion that fluid-tightly contacts the opening periphery of the communication hole in the main tube when the discharge tube is in the blocking position, and a lightening portion that is recessed in or penetrates in one direction is formed on the end face of the base end of the discharge tube facing in one direction, in a portion that is located between the rotation axis and the blocking seal portion when viewed from the one direction.
吐出筒の基端部の端面において、前記一方向から見て回転軸線と遮断シール部との間に位置する部分に、肉抜き部が形成されているので、吐出筒の基端部のうち、遮断シール部が位置する部分、およびこの部分に対して周方向に隣接する部分が、射出成形後に熱収縮するのを抑制することができる。これにより、摺接面を精度よく成形することが可能になり、摺接面と、本体筒における連通孔の開口周縁部と、の間のシール性を確保することができる。 A lightening section is formed on the end face of the base end of the discharge tube, in a section located between the rotation axis and the isolation seal section when viewed from the same direction. This prevents the section of the base end of the discharge tube where the isolation seal section is located and the section adjacent to this section in the circumferential direction from thermally shrinking after injection molding. This allows the sliding surface to be molded with precision, ensuring a seal between the sliding surface and the periphery of the opening of the communication hole in the main tube.
前記吐出筒の基端部のうち、前記一方向から見て前記摺接面と前記肉抜き部との間に位置する部分は、前記一方向から見て前記回転軸線に交差する径方向に弾性変形可能に形成されてもよい。 A portion of the base end of the discharge tube that is located between the sliding surface and the recessed portion when viewed from the one direction may be formed to be elastically deformable in a radial direction that intersects with the rotation axis when viewed from the one direction.
吐出筒の基端部のうち、前記一方向から見て摺接面と肉抜き部との間に位置する部分が、径方向に弾性変形可能に形成されているので、吐出筒が前記遮断位置に位置したときに、本体筒における連通孔の開口周縁部に、遮断シール部を弾性的に押し付けることが可能になり、遮断シール部と、本体筒における連通孔の開口周縁部と、の間のシール性を確実に確保することができる。 The portion of the base end of the discharge tube that is located between the sliding surface and the hollowed-out portion when viewed from the aforementioned direction is designed to be elastically deformable in the radial direction. This allows the blocking seal portion to be elastically pressed against the periphery of the opening of the communication hole in the main tube when the discharge tube is in the blocking position, ensuring a reliable seal between the blocking seal portion and the periphery of the opening of the communication hole in the main tube.
前記本体筒に、前記吐出筒のうちの少なくとも基端部が収容される凹部が形成され、前記凹部は、前記一方向で互いに対向する一対の側面と、一対の前記側面を前記一方向に連結し、かつ前記連通孔が開口した底面と、により画成され、前記吐出筒の基端部に、前記一方向に突出した円柱状の軸部が形成され、前記側面に、前記軸部が回転可能に嵌合された軸受孔が形成され、前記軸受孔は、前記一方向から見て前記連通孔が開口している方向に長い長孔となってもよい。 The main body tube has a recess that accommodates at least the base end of the discharge tube, and the recess is defined by a pair of side surfaces that face each other in the one direction and a bottom surface that connects the pair of side surfaces in the one direction and has the communicating hole opening into it. The base end of the discharge tube has a cylindrical shaft that protrudes in the one direction, and the side surface has a bearing hole into which the shaft is rotatably fitted, and the bearing hole is an elongated hole that is long in the direction in which the communicating hole opens when viewed from the one direction.
軸受孔が、前記一方向から見て連通孔が開口している方向に長い長孔となっているので、吐出筒を本体筒に組み付ける際、吐出筒を、この組み付け完了時に前記遮断位置に位置する姿勢にした状態で、軸部を凹部の側面に摺接させつつ、吐出筒を凹部の底面に向けて押し込み、遮断シール部を、本体筒における連通孔の開口周縁部に弾性的に押し付けたときに、軸受孔に到達した軸部も、軸受孔内で前記一方向から見て凹部の底面に向けて移動することとなり、軸部の全体を容易かつ確実に軸受孔内に進入させることができる。 The bearing hole is an elongated hole that is long in the direction in which the communication hole opens when viewed from the one direction. Therefore, when assembling the discharge tube to the main tube, with the discharge tube positioned in the blocking position upon completion of assembly, the shaft is brought into sliding contact with the side of the recess and the discharge tube is pushed toward the bottom of the recess. When the blocking seal is elastically pressed against the periphery of the opening of the communication hole in the main tube, the shaft that has reached the bearing hole also moves within the bearing hole toward the bottom of the recess when viewed from the one direction, allowing the entire shaft to easily and reliably enter the bearing hole.
前記吐出筒は、前記遮断位置に位置したときに、上下方向に延び、かつ前記吐出位置に位置したときに、上下方向および前記一方向に直交する前後方向に延び、前記連通孔は、前後方向に延び、前記摺接面は、前記吐出筒が前記吐出位置に位置したときに、前記本体筒における前記連通孔の開口周縁部に液密に当接する吐出シール部を備え、前記肉抜き部の周方向の端部は、前記一方向から見て、前記吐出シール部のうち、前記吐出筒が前記吐出位置に位置したときに下端部に位置する部分と、前記回転軸線と、の間に位置してもよい。 The discharge tube extends in the vertical direction when in the blocking position, and in the front-rear direction perpendicular to the vertical direction and the one direction when in the discharge position, the communication hole extends in the front-rear direction, the sliding surface has a discharge seal portion that abuts liquid-tightly against the opening periphery of the communication hole in the main tube when the discharge tube is in the discharge position, and the circumferential end of the recessed portion may be located between the rotation axis and a portion of the discharge seal portion that is located at the lower end when the discharge tube is in the discharge position, as viewed from the one direction.
吐出筒が、前記遮断位置に位置したときに、上下方向に延び、かつ前記吐出位置に位置したときに、前後方向に延び、連通孔が、前後方向に延び、肉抜き部の周方向の端部が、前記一方向から見て、吐出シール部のうち、吐出筒が前記吐出位置に位置したときに下端部に位置する部分と、回転軸線と、の間に位置している。
したがって、吐出シール部のうち、吐出筒が前記吐出位置に位置したときに下端部に位置する部分が、肉抜き部の周方向の端部と径方向に隣接することとなり、吐出シール部におけるこの部分を、射出成形後の熱収縮を生じさせにくくして精度よく成形することが可能になり、吐出筒が前記吐出位置に位置したときに、内容液が、吐出シール部の下端部と、本体筒における連通孔の開口周縁部と、の間から下方に漏出するのを確実に抑えることができる。
When the discharge tube is positioned at the blocking position, it extends in the vertical direction, and when positioned at the discharge position, it extends in the front-to-rear direction, the communicating hole extends in the front-to-rear direction, and the circumferential end of the hollowed-out portion is located, when viewed from the one direction, between the part of the discharge seal portion that is located at the lower end when the discharge tube is positioned at the discharge position and the rotation axis.
Therefore, the portion of the discharge seal portion that is located at the lower end when the discharge tube is in the discharge position is radially adjacent to the circumferential end of the hollowed-out portion, making it possible to mold this portion of the discharge seal portion with high precision while making it less susceptible to thermal shrinkage after injection molding, and reliably preventing the contents from leaking downward from between the lower end of the discharge seal portion and the opening periphery of the communicating hole in the main tube when the discharge tube is in the discharge position.
本発明の一態様によれば、吐出筒の摺接面と、本体筒における連通孔の開口周縁部と、の間のシール性を確保することができる。 According to one aspect of the present invention, it is possible to ensure a seal between the sliding surface of the discharge tube and the periphery of the opening of the communication hole in the main tube.
以下、図面を参照し、本発明の一実施形態に係る吐出部材を説明する。
本実施形態に係る吐出部材１は、図１に示されるように、本体筒１１と吐出筒１２とを備えている。本体筒１１および吐出筒１２は、射出成形により形成される。
本体筒１１は、頂壁１１ａおよび周壁１１ｂを有する有頂筒状に形成されている。本体筒１１の中心軸線Ｏ１に沿う頂壁１１ａ側を上側といい、これとは逆側を下側という。中心軸線Ｏ１に沿う方向を上下方向という。
Hereinafter, a discharge member according to one embodiment of the present invention will be described with reference to the drawings.
1, the discharge member 1 according to this embodiment includes a main body tube 11 and a discharge tube 12. The main body tube 11 and the discharge tube 12 are formed by injection molding.
The main body tube 11 is formed in a top-closed cylindrical shape having a top wall 11a and a peripheral wall 11b. The side of the main body tube 11 facing the top wall 11a along the central axis O1 is referred to as the upper side, and the opposite side is referred to as the lower side. The direction along the central axis O1 is referred to as the up-down direction.
図示の例では、本体筒１１は、内容物が収容された容器本体Ｗの口部Ｗ１に装着される吐出器５０に装着される。なお、吐出部材１として、本体筒１１が、容器本体Ｗの口部Ｗ１に直接装着され、容器本体Ｗ内の内容物を、吐出器５０を介さず直接、後述する吐出孔１３から吐出するキャップを採用してもよい。
吐出器５０は、上方付勢状態で下方移動可能に設けられたステム５１と、ステム５１の上下動に連結するピストン５２と、ピストン５２が上下摺動可能に嵌合されたシリンダ５３と、シリンダ５３を容器本体Ｗの口部Ｗ１に固定する装着キャップ５４と、を備えている。
本体筒１１の頂壁１１ａには、下方に向けて突出し、ステム５１の上端部に嵌合される嵌合筒１１ｃが形成されている。本体筒１１の周壁１１ｂの下端部内に、装着キャップ５４が挿入される。
In the illustrated example, the main body tube 11 is attached to a dispenser 50 which is attached to the mouth W1 of the container body W containing the contents. Alternatively, the dispensing member 1 may be a cap in which the main body tube 11 is directly attached to the mouth W1 of the container body W and the contents in the container body W are dispensed directly from a dispensing hole 13 (described later) without going through the dispenser 50.
The dispenser 50 comprises a stem 51 that is biased upward and can move downward, a piston 52 that is connected to the up and down movement of the stem 51, a cylinder 53 into which the piston 52 is fitted so that it can slide up and down, and an attachment cap 54 that fixes the cylinder 53 to the mouth W1 of the container body W.
A fitting cylinder 11c is formed on the top wall 11a of the main body cylinder 11, protruding downward and fitting onto the upper end of the stem 51. An attachment cap 54 is inserted into the lower end of the peripheral wall 11b of the main body cylinder 11.
吐出筒１２の先端部に吐出孔１３が形成され、吐出筒１２の基端部が、本体筒１１に一方向に延びる回転軸線Ｏ２を中心に回転可能に支持されている。
前記一方向から見て回転軸線Ｏ２回りに周回する方向を周方向といい、前記一方向から見て回転軸線Ｏ２に交差する方向を径方向という。前記一方向を左右方向といい、前記一方向および上下方向に直交する方向を前後方向という。
A discharge hole 13 is formed at the tip of the discharge tube 12, and the base end of the discharge tube 12 is supported by the main body tube 11 so as to be rotatable about a rotation axis O2 extending in one direction.
The direction orbiting the rotation axis O2 as viewed from the one direction is referred to as the circumferential direction, and the direction intersecting the rotation axis O2 as viewed from the one direction is referred to as the radial direction. The one direction is referred to as the left-right direction, and the direction perpendicular to the one direction and the up-down direction is referred to as the front-rear direction.
吐出筒１２の基端部には、周方向に延び、かつ吐出筒１２の回転軸線Ｏ２回りの回転移動時に、本体筒１１に摺接する摺接面１４が形成されている。吐出筒１２の基端部は、左右方向に延びる円柱状に形成されている。
本体筒１１には、摺接面１４に向けて開口した連通孔１５が形成され、摺接面１４には、吐出孔１３と連通し、かつ連通孔１５と連通可能な導入孔１６が開口している。
A sliding surface 14 is formed at the base end of the discharge tube 12. The sliding surface 14 extends in the circumferential direction and comes into sliding contact with the main body tube 11 when the discharge tube 12 rotates about the rotation axis O2. The base end of the discharge tube 12 is formed in a cylindrical shape extending in the left-right direction.
The main body tube 11 has a communication hole 15 that opens toward the sliding surface 14, and the sliding surface 14 has an introduction hole 16 that communicates with the discharge hole 13 and can also communicate with the communication hole 15.
本体筒１１に、吐出筒１２のうちの少なくとも基端部が収容される凹部１７が形成されている。
凹部１７は、左右方向で互いに対向する一対の側面１７ａと、一対の側面１７ａの後端部同士を左右方向に連結し、かつ前方を向く底面１７ｂと、一対の側面１７ａの上端部同士を左右方向に連結し、かつ下方を向く天井面１７ｃと、により画成されている。
なお、凹部１７は、天井面１７ｃを有さず、上方に向けて開放されてもよい。
The main body tube 11 is formed with a recess 17 in which at least the base end of the discharge tube 12 is accommodated.
The recess 17 is defined by a pair of side surfaces 17a that face each other in the left-right direction, a bottom surface 17b that connects the rear ends of the pair of side surfaces 17a in the left-right direction and faces forward, and a ceiling surface 17c that connects the upper ends of the pair of side surfaces 17a in the left-right direction and faces downward.
The recess 17 may not have a ceiling surface 17c and may be open upward.
底面１７ｂに、連通孔１５が開口している。連通孔１５は、前後方向に延びている。連通孔１５は、本体筒１１の嵌合筒１１ｃ内を通して、ステム５１内に連通する。底面１７ｂにおける連通孔１５の開口周縁部には、前方に向けて突出し、かつ周方向に延びるシール突部１１ｄが形成されている。シール突部１１ｄにおける周方向の略全長にわたって吐出筒１２の摺接面１４が液密に当接する。シール突部１１ｄは、左右方向から見て、回転軸線Ｏ２を中心に約９０°の角度範囲にわたって設けられている。 A communication hole 15 opens into the bottom surface 17b. The communication hole 15 extends in the front-to-rear direction. The communication hole 15 passes through the fitting tube 11c of the main body tube 11 and communicates with the inside of the stem 51. A seal protrusion 11d that protrudes forward and extends circumferentially is formed on the periphery of the opening of the communication hole 15 on the bottom surface 17b. The sliding surface 14 of the discharge tube 12 abuts liquid-tightly over substantially the entire circumferential length of the seal protrusion 11d. When viewed from the left and right, the seal protrusion 11d is arranged over an angular range of approximately 90° around the rotation axis O2.
吐出筒１２の基端部に、左右方向に突出した円柱状の軸部１８が形成されており、側面１７ａに、軸部１８が回転可能に嵌合された軸受孔１９が形成されている。軸受孔１９は、左右方向から見て前後方向に長い長孔となっている。
側面１７ａに、前後方向に延び、かつ前方に向けて開口した溝２０が形成されている。溝２０の深さ（左右方向の大きさ）は、軸受孔１９の深さより浅くなっている。溝２０は、軸受孔１９の前端部から前方に向けて延びている。溝２０および軸受孔１９それぞれの上下方向の幅は同じで、溝２０および軸受孔１９は、上下方向の同じ位置に位置している。溝２０および軸受孔１９は、側面１７ａの上端部に形成されている。軸受孔１９は、貫通孔となっている。
A cylindrical shaft 18 that protrudes in the left-right direction is formed at the base end of the discharge tube 12, and a bearing hole 19 into which the shaft 18 is rotatably fitted is formed in the side surface 17a. The bearing hole 19 is an elongated hole that is long in the front-rear direction when viewed from the left-right direction.
A groove 20 that extends in the front-rear direction and opens forward is formed in the side surface 17a. The depth (size in the left-right direction) of the groove 20 is shallower than the depth of the bearing hole 19. The groove 20 extends forward from the front end of the bearing hole 19. The groove 20 and the bearing hole 19 have the same width in the up-down direction, and the groove 20 and the bearing hole 19 are located at the same position in the up-down direction. The groove 20 and the bearing hole 19 are formed in the upper end of the side surface 17a. The bearing hole 19 is a through-hole.
吐出筒１２は、摺接面１４が、本体筒１１のシール突部１１ｄに液密に当接した状態で、図２に示されるような、導入孔１６と連通孔１５とが連通する吐出位置と、図１に示されるような、導入孔１６と連通孔１５との連通を遮断する遮断位置と、の間を、回転軸線Ｏ２回りに回転可能に設けられている。摺接面１４は、連通孔１５を全周にわたってシールしている。 With the sliding surface 14 in liquid-tight contact with the sealing projection 11d of the main body tube 11, the discharge tube 12 is rotatable about the rotation axis O2 between a discharge position in which the introduction hole 16 and the communication hole 15 are in communication as shown in FIG. 2, and a blocking position in which the introduction hole 16 and the communication hole 15 are blocked from communication as shown in FIG. 1. The sliding surface 14 seals the communication hole 15 around the entire circumference.
図示の例では、吐出筒１２は、遮断位置に位置したときに上下方向に延び、かつ吐出位置に位置したときに前後方向に延びる。吐出筒１２は、遮断位置に位置したときに、全長にわたって凹部１７に収容される。吐出筒１２は、吐出位置に位置したときに、少なくとも先端部が凹部１７より前方に位置する。
吐出筒１２には、遮断位置に位置したときに凹部１７から前方に突出した摘み片１２ｂが形成されている。摘み片１２ｂは、吐出筒１２が吐出位置に位置したときに、本体筒１１における凹部１７の前端開口部の上端部に係止される。
In the illustrated example, the discharge tube 12 extends vertically when positioned at the blocking position, and extends longitudinally when positioned at the discharge position. When positioned at the blocking position, the entire length of the discharge tube 12 is housed in the recess 17. When positioned at the discharge position, at least the tip of the discharge tube 12 is positioned forward of the recess 17.
The discharge tube 12 is formed with a tab 12b that protrudes forward from the recess 17 when the discharge tube 12 is in the shutoff position. The tab 12b is engaged with the upper end of the front opening of the recess 17 in the main tube 11 when the discharge tube 12 is in the discharge position.
摺接面１４は、吐出筒１２が遮断位置に位置したときに、本体筒１１のシール突部１１ｄに液密に当接する遮断シール部２１と、吐出筒１２が吐出位置に位置したときに、シール突部１１ｄに液密に当接する吐出シール部２２と、を備えている。摺接面１４のうちの吐出シール部２２に、導入孔１６が開口している。遮断シール部２１および吐出シール部２２は、周方向に連なっている。なお、遮断シール部２１および吐出シール部２２は、周方向に間隔をあけて設けられてもよい。 The sliding surface 14 includes a shutoff seal portion 21 that comes into liquid-tight contact with the seal projection 11d of the main body tube 11 when the discharge tube 12 is in the shutoff position, and a discharge seal portion 22 that comes into liquid-tight contact with the seal projection 11d when the discharge tube 12 is in the discharge position. The introduction hole 16 opens into the discharge seal portion 22 of the sliding surface 14. The shutoff seal portion 21 and the discharge seal portion 22 are connected in the circumferential direction. Note that the shutoff seal portion 21 and the discharge seal portion 22 may be spaced apart in the circumferential direction.
吐出筒１２の基端部のうちの左右方向を向く端面において、左右方向から見て回転軸線Ｏ２と遮断シール部２１との間に位置する部分に、左右方向に窪む、若しくは左右方向に貫く肉抜き部２３が形成されている。肉抜き部２３は、遮断シール部２１と径方向に隣接している。肉抜き部２３は、遮断シール部２１における周方向の全長にわたって径方向に隣接している。図示の例では、肉抜き部２３は、吐出筒１２の基端部を左右方向に貫いている。 A lightening portion 23 that is recessed or penetrates in the left-right direction is formed in the end face of the base end of the discharge tube 12, in a portion located between the rotation axis O2 and the isolation seal portion 21 when viewed from the left-right direction. The lightening portion 23 is adjacent to the isolation seal portion 21 in the radial direction. The lightening portion 23 is adjacent to the isolation seal portion 21 in the radial direction over the entire circumferential length of the isolation seal portion 21. In the illustrated example, the lightening portion 23 penetrates the base end of the discharge tube 12 in the left-right direction.
吐出筒１２の基端部のうち、左右方向から見て摺接面１４と肉抜き部２３との間に位置する部分（以下、弾性変形部１２ａという）は、径方向に弾性変形可能に形成されている。図示の例では、弾性変形部１２ａは、周方向に延びる湾曲した板状に形成されている。弾性変形部１２ａの外周面は、遮断シール部２１を周方向の全長にわたって含んでいる。弾性変形部１２ａの径方向の肉厚は、周方向の全長にわたって同じになっている。 The portion of the base end of the discharge tube 12 located between the sliding surface 14 and the recessed portion 23 when viewed from the left and right (hereinafter referred to as the elastically deforming portion 12a) is formed so as to be elastically deformable in the radial direction. In the example shown, the elastically deforming portion 12a is formed in the shape of a curved plate extending in the circumferential direction. The outer peripheral surface of the elastically deforming portion 12a includes the blocking seal portion 21 over its entire circumferential length. The radial thickness of the elastically deforming portion 12a is the same over its entire circumferential length.
肉抜き部２３の周方向の端部は、左右方向から見て、吐出シール部２２のうち、吐出筒１２が吐出位置に位置したときに下端部に位置する部分と、回転軸線Ｏ２と、の間に位置している。これにより、吐出シール部２２のうち、吐出筒１２が吐出位置に位置したときに下端部に位置する部分が、肉抜き部２３の周方向の端部と径方向に隣接する。吐出シール部２２のうち、吐出筒１２が吐出位置に位置したときに下端部に位置する部分は、吐出シール部２２における周方向の両端部のうちの一方の端部となっている。吐出シール部２２における周方向の両端部のうちの一方の端部は、弾性変形部１２ａの外周面に含まれている。 When viewed from the left and right, the circumferential end of the lightening portion 23 is located between the rotation axis O2 and the portion of the discharge seal portion 22 that is located at the lower end when the discharge tube 12 is in the discharge position. As a result, the portion of the discharge seal portion 22 that is located at the lower end when the discharge tube 12 is in the discharge position is radially adjacent to the circumferential end of the lightening portion 23. The portion of the discharge seal portion 22 that is located at the lower end when the discharge tube 12 is in the discharge position is one of the two circumferential ends of the discharge seal portion 22. One of the two circumferential ends of the discharge seal portion 22 is included in the outer peripheral surface of the elastic deformation portion 12a.
以上説明したように、本実施形態による吐出部材１によれば、吐出筒１２の基端部の端面において、左右方向から見て回転軸線Ｏ２と遮断シール部２１との間に位置する部分に、肉抜き部２３が形成されているので、吐出筒１２の基端部のうち、遮断シール部２１が位置する部分、およびこの部分に対して周方向に隣接する部分が、射出成形後に熱収縮するのを抑制することができる。これにより、摺接面１４を精度よく成形することが可能になり、摺接面１４と、本体筒１１のシール突部１１ｄと、の間のシール性を確保することができる。 As described above, with the discharge member 1 according to this embodiment, the end face of the base end of the discharge tube 12 has a lightening portion 23 formed in a portion located between the rotation axis O2 and the isolation seal portion 21 when viewed from the left and right. This prevents the portion of the base end of the discharge tube 12 where the isolation seal portion 21 is located and the portion adjacent to this portion in the circumferential direction from thermally shrinking after injection molding. This makes it possible to mold the sliding surface 14 with precision, ensuring a good seal between the sliding surface 14 and the seal protrusion 11d of the main body tube 11.
吐出筒１２の基端部のうち、左右方向から見て摺接面１４と肉抜き部２３との間に位置する部分が、径方向に弾性変形可能に形成されているので、吐出筒１２が遮断位置に位置したときに、本体筒１１のシール突部１１ｄに、遮断シール部２１を弾性的に押し付けることが可能になり、遮断シール部２１と、本体筒１１のシール突部１１ｄと、の間のシール性を確実に確保することができる。 The portion of the base end of the discharge tube 12 that is located between the sliding surface 14 and the recessed portion 23 when viewed from the left and right is designed to be elastically deformable in the radial direction. This allows the blocking seal portion 21 to be elastically pressed against the sealing protrusion 11d of the main body tube 11 when the discharge tube 12 is in the blocking position, ensuring a reliable seal between the blocking seal portion 21 and the sealing protrusion 11d of the main body tube 11.
軸受孔１９が、左右方向から見て連通孔１５が開口している方向に長い長孔となっているので、吐出筒１２を本体筒１１に組み付ける際、吐出筒１２を、この組み付け完了時に遮断位置に位置する姿勢にした状態で、軸部１８を凹部１７の側面１７ａに摺接させつつ、吐出筒１２を凹部１７の底面１７ｂに向けて押し込み、遮断シール部２１を、本体筒１１のシール突部１１ｄに弾性的に押し付けたときに、軸受孔１９に到達した軸部１８も、軸受孔１９内で左右方向から見て凹部１７の底面１７ｂに向けて移動することとなり、軸部１８の全体を容易かつ確実に軸受孔１９内に進入させることができる。 The bearing hole 19 is an elongated hole that is long in the direction in which the communication hole 15 opens when viewed from the left and right. Therefore, when assembling the discharge tube 12 to the main tube 11, with the discharge tube 12 positioned so that it will be in the blocking position upon completion of assembly, the shaft 18 is brought into sliding contact with the side surface 17a of the recess 17, and the discharge tube 12 is pushed toward the bottom surface 17b of the recess 17. When the blocking seal 21 is elastically pressed against the seal projection 11d of the main tube 11, the shaft 18 that has reached the bearing hole 19 also moves within the bearing hole 19 toward the bottom surface 17b of the recess 17 when viewed from the left and right, allowing the entire shaft 18 to easily and reliably enter the bearing hole 19.
吐出筒１２が、遮断位置に位置したときに、上下方向に延び、かつ吐出位置に位置したときに、前後方向に延び、連通孔１５が、前後方向に延び、肉抜き部２３の周方向の端部が、左右方向から見て、吐出シール部２２のうち、吐出筒１２が吐出位置に位置したときに下端部に位置する部分と、回転軸線Ｏ２と、の間に位置している。
したがって、吐出シール部２２のうち、吐出筒１２が吐出位置に位置したときに下端部に位置する部分が、肉抜き部２３の周方向の端部と径方向に隣接することとなり、吐出シール部２２におけるこの部分を、射出成形後の熱収縮を生じさせにくくして精度よく成形することが可能になり、吐出筒１２が吐出位置に位置したときに、内容液が、吐出シール部２２の下端部と、本体筒１１のシール突部１１ｄと、の間から下方に漏出するのを確実に抑えることができる。
When the discharge tube 12 is in the blocking position, it extends in the vertical direction, and when it is in the discharge position, it extends in the front-to-rear direction, the communication hole 15 extends in the front-to-rear direction, and the circumferential end of the hollowed-out portion 23 is located, when viewed from the left-to-right direction, between the part of the discharge seal portion 22 that is located at the lower end when the discharge tube 12 is in the discharge position and the rotation axis O2.
Therefore, the portion of the discharge seal portion 22 that is located at the lower end when the discharge tube 12 is in the discharge position is radially adjacent to the circumferential end of the hollowed-out portion 23, making it possible to mold this portion of the discharge seal portion 22 with high precision while making it less susceptible to thermal shrinkage after injection molding, and reliably preventing the content liquid from leaking downward from between the lower end of the discharge seal portion 22 and the seal protrusion 11d of the main body tube 11 when the discharge tube 12 is in the discharge position.
なお、本発明の技術範囲は、前述した実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 The technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
例えば、吐出筒１２の基端部のうち、左右方向から見て摺接面１４と肉抜き部２３との間に位置する部分は、径方向に弾性変形可能に形成されていなくてもよい。
本体筒１１に凹部１７を形成しなくてもよい。
遮断位置に位置した吐出筒１２が、凹部１７に全長にわたって収容されなくてもよい。
軸受孔１９は、左右方向から見て軸部１８と同じ形状で同じ大きさに形成されてもよい。
吐出筒１２は、遮断位置に位置したときに、上下方向とは異なる方向に延び、かつ吐出位置に位置したときに、前後方向とは異なる方向に延びてもよい。
連通孔１５は、前後方向とは異なる方向に延びてもよい。
肉抜き部２３は、左右方向から見て回転軸線Ｏ２と吐出シール部２２との間から周方向に離れてもよい。
For example, the portion of the base end of the discharge tube 12 that is located between the sliding surface 14 and the hollowed portion 23 when viewed from the left and right direction does not need to be formed to be elastically deformable in the radial direction.
The recess 17 does not have to be formed in the main body tube 11 .
The entire length of the discharge tube 12 positioned at the blocking position does not have to be accommodated in the recess 17 .
The bearing hole 19 may be formed to have the same shape and size as the shaft portion 18 when viewed in the left-right direction.
The discharge tube 12 may extend in a direction different from the up-down direction when positioned at the blocking position, and may extend in a direction different from the front-rear direction when positioned at the discharge position.
The communication hole 15 may extend in a direction different from the front-rear direction.
The lightening portion 23 may be spaced apart in the circumferential direction from between the rotation axis O2 and the discharge seal portion 22 when viewed from the left-right direction.
その他、本発明の趣旨を逸脱しない範囲で、前記実施形態における構成要素を周知の構成要素に置き換えることは適宜可能であり、また、前記実施形態および前記変形例を適宜組み合わせてもよい。 In addition, the components in the above embodiments may be replaced with well-known components as appropriate, and the above embodiments and modifications may be combined as appropriate, without departing from the spirit of the present invention.
１ 吐出部材
１１ 本体筒
１２ 吐出筒
１３ 吐出孔
１４ 摺接面
１５ 連通孔
１６ 導入孔
１７ 凹部
１７ａ 側面
１７ｂ 底面
１８ 軸部
１９ 軸受孔
２１ 遮断シール部
２２ 吐出シール部
２３ 肉抜き部
５０ 吐出器
Ｏ２ 回転軸線
Ｗ 容器本体
Ｗ１ 口部
REFERENCE SIGNS LIST 1 Discharge member 11 Main cylinder 12 Discharge cylinder 13 Discharge hole 14 Sliding surface 15 Communication hole 16 Introduction hole 17 Recess 17a Side surface 17b Bottom surface 18 Shaft portion 19 Bearing hole 21 Shut-off seal portion 22 Discharge seal portion 23 Lightening portion 50 Discharger O2 Rotation axis W Container body W1 Mouth portion
Claims (4)
先端部に吐出孔が形成され、基端部が前記本体筒に一方向に延びる回転軸線を中心に回転可能に支持された吐出筒と、を備え、
前記吐出筒の基端部に、前記一方向から見て、前記回転軸線回りに周回する周方向に延び、かつ前記吐出筒の前記回転軸線回りの回転移動時に、前記本体筒に摺接する摺接面が形成され、
前記本体筒に、前記摺接面に向けて開口した連通孔が形成され、
前記摺接面に、前記吐出孔と連通し、かつ前記連通孔と連通可能な導入孔が開口し、
前記吐出筒は、
前記摺接面が、前記本体筒における前記連通孔の開口周縁部に液密に当接した状態で、
前記導入孔と前記連通孔とが連通する吐出位置と、
前記導入孔と前記連通孔との連通を遮断する遮断位置と、の間を、前記回転軸線回りに回転可能に設けられ、
前記摺接面は、前記吐出筒が前記遮断位置に位置したときに、前記本体筒における前記連通孔の開口周縁部に液密に当接する遮断シール部を備え、
前記吐出筒の基端部のうちの前記一方向を向く端面において、前記一方向から見て前記回転軸線と前記遮断シール部との間に位置する部分に、前記一方向に窪む、若しくは前記一方向に貫く肉抜き部が形成されている、吐出部材。 A main body tube;
a discharge tube having a discharge hole formed at its tip end and a base end supported on the main body tube so as to be rotatable about a rotation axis extending in one direction;
a sliding surface is formed at a base end of the discharge tube, the sliding surface extending in a circumferential direction around the rotation axis when viewed from the one direction, and slidingly contacting the main body tube when the discharge tube rotates around the rotation axis;
a communication hole that opens toward the sliding contact surface is formed in the main body tube;
an introduction hole that is in communication with the discharge hole and can be in communication with the communication hole is opened in the sliding contact surface;
The discharge tube is
When the sliding contact surface is in liquid-tight contact with the opening periphery of the communication hole in the main body tube,
a discharge position where the introduction hole and the communication hole communicate with each other;
a blocking position at which the communication between the introduction hole and the communication hole is blocked,
the sliding contact surface includes a shutoff seal portion that comes into liquid-tight contact with the opening periphery of the communication hole in the main body tube when the discharge tube is positioned at the shutoff position,
A discharge member in which a hollowed-out portion that is recessed in or penetrates in the one direction is formed in the end face of the base end of the discharge tube facing the one direction, in a portion that is located between the rotation axis and the blocking seal portion when viewed from the one direction.
前記凹部は、前記一方向で互いに対向する一対の側面と、一対の前記側面を前記一方向に連結し、かつ前記連通孔が開口した底面と、により画成され、
前記吐出筒の基端部に、前記一方向に突出した円柱状の軸部が形成され、
前記側面に、前記軸部が回転可能に嵌合された軸受孔が形成され、
前記軸受孔は、前記一方向から見て前記連通孔が開口している方向に長い長孔となっている、請求項２に記載の吐出部材。 The main body tube is formed with a recess for receiving at least the base end of the discharge tube,
the recess is defined by a pair of side surfaces facing each other in the one direction and a bottom surface connecting the pair of side surfaces in the one direction and having the communication hole opened therein;
A cylindrical shaft portion protruding in one direction is formed at a base end of the discharge tube,
a bearing hole into which the shaft portion is rotatably fitted is formed on the side surface;
The discharge member according to claim 2 , wherein the bearing hole is an elongated hole that is long in a direction in which the communication hole opens when viewed from the one direction.
前記連通孔は、前後方向に延び、
前記摺接面は、前記吐出筒が前記吐出位置に位置したときに、前記本体筒における前記連通孔の開口周縁部に液密に当接する吐出シール部を備え、
前記肉抜き部の周方向の端部は、前記一方向から見て、前記吐出シール部のうち、前記吐出筒が前記吐出位置に位置したときに下端部に位置する部分と、前記回転軸線と、の間に位置している、請求項１から３のいずれか１項に記載の吐出部材。 the discharge tube extends in a vertical direction when positioned at the blocking position, and extends in a front-rear direction perpendicular to the vertical direction and the one direction when positioned at the discharge position;
The communication hole extends in the front-rear direction,
the sliding contact surface includes a discharge seal portion that comes into liquid-tight contact with the opening periphery of the communication hole in the main body tube when the discharge tube is located at the discharge position,
4. A discharge member according to claim 1, wherein the circumferential end of the hollowed-out portion is located between the rotation axis and a portion of the discharge seal portion that is located at the lower end when the discharge tube is located at the discharge position, when viewed from the one direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022105995A JP7745519B2 (en) | 2022-06-30 | 2022-06-30 | Discharge member |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022105995A JP7745519B2 (en) | 2022-06-30 | 2022-06-30 | Discharge member |
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| JP2024005696A JP2024005696A (en) | 2024-01-17 |
| JP7745519B2 true JP7745519B2 (en) | 2025-09-29 |
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| US9896247B2 (en) * | 2016-05-27 | 2018-02-20 | The Boeing Company | Self-closing flip-spout cap |
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