JP2009299530A - Diaphragm pump - Google Patents

Diaphragm pump Download PDF

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JP2009299530A
JP2009299530A JP2008153092A JP2008153092A JP2009299530A JP 2009299530 A JP2009299530 A JP 2009299530A JP 2008153092 A JP2008153092 A JP 2008153092A JP 2008153092 A JP2008153092 A JP 2008153092A JP 2009299530 A JP2009299530 A JP 2009299530A
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diaphragm
drive
drive shaft
hole
shaft
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JP5053934B2 (en
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Kazuyuki Senda
和之 千田
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Oken Seiko Co Ltd
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Oken Seiko Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To suppress the occurrence of mechanical noise during operation of a pump in a diaphragm pump. <P>SOLUTION: A lower end of a drive shaft 5 is pivotally attached in an inclined state with respect to an output shaft 3a to a portion of a crank base 4 integrally rotating with the output shaft 3a of a motor 3 and eccentric from the output shaft 3a. The drive shaft 5 is inserted in a non-through-hole 7 of a drive body 6, and the drive body 6 is rotatably pivoted to the drive shaft 5. Each diaphragm part 14 of a diaphragm 13 is attached to a drive element 8 of the drive body 6, and the diaphragm parts 14 form pump chambers 20A, 20B along with a valve holder 16. A ball 30 and a compression coil spring 31 are interposed between an upper end 5a of the drive shaft 5 and a bottom part 7a of the non-through-hole 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、モータの回転に追従して傾斜した状態で回転する駆動軸によって揺動する駆動体を備え、この駆動体の揺動動作によってこの駆動体に取り付けられたダイヤフラムのダイヤフラム部を往復動させ、ポンプ室が拡縮することによりポンプ作用をするダイヤフラムポンプに関するものである。   The present invention includes a drive body that is swung by a drive shaft that rotates in an inclined state following the rotation of the motor, and reciprocatingly moves the diaphragm portion of the diaphragm attached to the drive body by the swinging operation of the drive body. In addition, the present invention relates to a diaphragm pump that performs a pumping action by expanding and contracting the pump chamber.

図２は従来のダイヤフラムポンプの断面図である。同図に、全体を符号１０１で示す２気筒で負圧型のダイヤフラムポンプは、略有底角筒状に形成されたケース２の底部の外側に固定されたモータ３を備えており、このモータ３の出力軸３ａはケース２の孔からケース２内に突出し、突出端部にはクランク台４が軸着されている。   FIG. 2 is a sectional view of a conventional diaphragm pump. In the same figure, a two-cylinder negative pressure diaphragm pump denoted by reference numeral 101 as a whole is provided with a motor 3 fixed to the outside of the bottom of a case 2 formed in a substantially bottomed rectangular tube shape. The output shaft 3a protrudes from the hole of the case 2 into the case 2, and a crank table 4 is pivotally attached to the protruding end.

５は一端部（下部）がクランク台４の出力軸３ａから偏心した部位に、出力軸３ａの軸線方向に対して傾斜した状態で軸着された駆動軸であって、他端部（上部）が駆動体６の中央部に設けた非貫通穴７内に嵌挿されており、駆動体６はこの駆動軸５に回転自在に枢支されている。この駆動体６の頭部６ａは断面が円弧状に形成され、駆動体６には、非貫通孔７と略直交するように一対の駆動子８，８が先端に向かって共に下方に同じ角度だけわずかに傾斜するように形成されており、各駆動子８，８の先端部にはダイヤフラム部取付孔８ａ，８ａが設けられている。   Reference numeral 5 denotes a drive shaft that is attached to a part of which one end (lower part) is eccentric from the output shaft 3a of the crank base 4 while being inclined with respect to the axial direction of the output shaft 3a, and the other end (upper part). Is inserted into a non-through hole 7 provided at the center of the drive body 6, and the drive body 6 is pivotally supported by the drive shaft 5. The head 6a of the driving body 6 has an arc-shaped cross section, and the driving body 6 has a pair of driving elements 8, 8 at the same angle downward toward the tip so as to be substantially orthogonal to the non-through hole 7. It is formed so as to be slightly inclined, and diaphragm portion mounting holes 8a, 8a are provided at the tip portions of the respective driver elements 8, 8.

１０は下方が開口され箱状に形成されたダイヤフラムホルダーであって、上板の中央部に駆動体６の頭部６ａが当接して支持される当接部１１と、この当接部１１を挟むようにして２つの保持孔１２，１２とが設けられており、ケース２の上部開口端に載置されている。１３はダイヤフラムであって、ダイヤフラムホルダーの保持孔１２，１２に挿入される平面視において互いに１８０°位相をずらした２つのダイヤフラム部１４，１４が設けられている。   Reference numeral 10 denotes a diaphragm holder that is open at the bottom and is formed in a box shape. The diaphragm holder 10 includes a contact portion 11 that is supported by the head portion 6a of the driving body 6 in contact with the center portion of the upper plate, and the contact portion 11 includes Two holding holes 12, 12 are provided so as to be sandwiched, and are placed on the upper opening end of the case 2. Reference numeral 13 denotes a diaphragm, which is provided with two diaphragm portions 14 and 14 that are 180 degrees out of phase with each other in a plan view inserted into the holding holes 12 and 12 of the diaphragm holder.

これらダイヤフラム部１４，１４の下部には、ピストン１５，１５が設けられており、各ピストン部１５の下部には、細径の首部１５ａを介して係止用の凸部１５ｂが一体に形成されている。ダイヤフラム１３は、ダイヤフラム部１４の凸部１５ｂを弾性変形させながら、駆動体６の駆動子８のダイヤフラム部取付孔８ａに圧入することにより、首部１５ａがダイヤフラム部取付孔８ａに取り付けられて、ダイヤフラムホルダー１０上に載置される。   Pistons 15 and 15 are provided at the lower part of the diaphragm parts 14 and 14, and a locking convex part 15b is integrally formed at the lower part of each piston part 15 through a narrow neck part 15a. ing. The diaphragm 13 is press-fitted into the diaphragm mounting hole 8a of the driver 8 of the driving body 6 while elastically deforming the convex portion 15b of the diaphragm section 14, so that the neck 15a is mounted in the diaphragm mounting hole 8a, and the diaphragm 13 is mounted. It is placed on the holder 10.

１６はバルブホルダーであって、中央部に２つの吐出孔１７，１７が設けられているとともに、これら吐出孔１７，１７の外側に吸入孔１８，１８が設けられており、これら吸入孔１８，１８を開閉する吸入弁１９，１９が取り付けられている。このバルブホルダー１６によってダイヤフラム１３をダイヤフラムホルダー１０とともに挟持することにより、このバルブホルダー１６と各ダイヤフラム部１４，１４との間にポンプ室２０Ａ，２０Ｂが形成される。   Reference numeral 16 denotes a valve holder, which is provided with two discharge holes 17 and 17 in the central portion, and suction holes 18 and 18 are provided outside the discharge holes 17 and 17. Suction valves 19 and 19 for opening and closing 18 are attached. By holding the diaphragm 13 together with the diaphragm holder 10 by the valve holder 16, pump chambers 20 </ b> A and 20 </ b> B are formed between the valve holder 16 and the diaphragm portions 14 and 14.

２１は吐出孔１７，１７を開閉する吐出弁である。２２はバルブホルダー１６を覆う蓋体であって、バルブホルダー１６との間に、吐出孔１７を介してポンプ室２０Ａ，２０Ｂに連通する吐出空間２３と、この吐出空間２３の周りに吸入孔１８を介してポンプ室２０Ａ，２０Ｂに連通する吸入空間２４とが形成されている。２５は外部と吐出空間２３とを連通する吐出筒、２６は外部と吸入空間２４とを連通する吸入筒である。   A discharge valve 21 opens and closes the discharge holes 17 and 17. Reference numeral 22 denotes a lid that covers the valve holder 16, a discharge space 23 that communicates with the valve holder 16 via the discharge holes 17 and the pump chambers 20 </ b> A and 20 </ b> B, and a suction hole 18 around the discharge space 23. And a suction space 24 communicating with the pump chambers 20A and 20B. A discharge cylinder 25 communicates the outside with the discharge space 23, and a suction cylinder 26 communicates the outside with the suction space 24.

このように構成されていることにより、吸入筒２６にエアーチューブ等を介して真空引きする装置を接続させ、吐出筒２５を大気に開放する。このような状態としてから、モータ３を駆動し出力軸３ａを回転させると、クランク台４も一体的に回転し、駆動軸５が傾斜した状態で回転するため、駆動体６はダイヤフラムホルダー１０の当接部１１に当接した頂部６ａを揺動中心として揺動し、一対の駆動子８，８の両端部が図中上下方向へ往復動する。   With this configuration, the suction cylinder 26 is connected to a device that evacuates via an air tube or the like, and the discharge cylinder 25 is opened to the atmosphere. When the motor 3 is driven and the output shaft 3a is rotated after such a state, the crank base 4 also rotates integrally, and the drive shaft 5 rotates in an inclined state. The top 6a in contact with the contact portion 11 is swung around the swing center, and both ends of the pair of driver elements 8 and 8 reciprocate in the vertical direction in the figure.

したがって、２つのダイヤフラム部１４，１４が交互に上下方向に往復動するため、２つのポンプ室２０Ａ，２０Ｂも交互に拡縮する。ポンプ室２０Ａ，２０Ｂが拡張することにより、ポンプ室２０Ａ，２０Ｂ内が負圧状態となって吸入筒２６を介して真空引きする装置内のエアーが吸入空間２４および吸入孔１８を通ってポンプ室２０Ａ，２０Ｂ内に吸入されるから、装置の内部が減圧される。一方、ポンプ室２０Ａ，２０Ｂが収縮すると、ポンプ室２０Ａ，２０Ｂ内のエアーは圧力が上昇するので吐出孔１７および吐出空間２３を通って吐出筒２５から大気に放出される。   Accordingly, since the two diaphragm portions 14 and 14 are alternately reciprocated in the vertical direction, the two pump chambers 20A and 20B are alternately expanded and contracted. When the pump chambers 20A and 20B are expanded, the inside of the pump chambers 20A and 20B is in a negative pressure state, and the air in the apparatus that is evacuated through the suction cylinder 26 passes through the suction space 24 and the suction hole 18 to thereby reach the pump chamber. Since the air is sucked into 20A and 20B, the inside of the apparatus is decompressed. On the other hand, when the pump chambers 20A and 20B contract, the air in the pump chambers 20A and 20B increases in pressure, and is discharged from the discharge cylinder 25 through the discharge hole 17 and the discharge space 23 to the atmosphere.

上述した従来のダイヤフラムポンプにおいては、駆動体６が１回揺動動作するうちにダイヤフラム１３から駆動体６に加わる負荷に変動があるため、駆動軸５の軸線方向における分力にも変動が生じる。このため、ポンプ動作中に、駆動体６が駆動軸５の軸線方向に往復動することにより、駆動軸５の頭部５ａと駆動体６の非貫通孔７の底部７ａとが当接と離間とを繰り返すため、これらの間で機械音が発生するといった問題があった。この機械音は、駆動子８が一つである、いわゆる１気筒の場合や駆動子８が３つである３気筒以上の場合も同様の理由で発生する。   In the above-described conventional diaphragm pump, since the load applied to the drive body 6 from the diaphragm 13 varies while the drive body 6 swings once, the component force in the axial direction of the drive shaft 5 also varies. . For this reason, the drive body 6 reciprocates in the axial direction of the drive shaft 5 during the pump operation, so that the head portion 5a of the drive shaft 5 and the bottom portion 7a of the non-through hole 7 of the drive body 6 are brought into contact with and separated from each other. There was a problem that mechanical sound was generated between them. This mechanical noise is generated for the same reason in the case of a so-called one cylinder having one driver element 8 or in the case of three or more cylinders having three driver elements 8.

本発明は上記した従来の問題に鑑みなされたものであり、その目的とするところは、ポンプ動作中に発生する機械音を抑制することにある。   The present invention has been made in view of the above-described conventional problems, and an object thereof is to suppress mechanical noise generated during pump operation.

この目的を達成するために、本発明は、モータの出力軸と一体的に回転するクランク台と、このクランク台の前記出力軸から偏心した部位に当該出力軸に対して傾斜した状態で一端部が軸着された駆動軸と、この駆動軸の他端部に回動自在に枢支される非貫通孔を有しこの非貫通孔の軸線と略直交する方向に延在する駆動子を有する駆動体と、この駆動体の駆動子に取り付けられポンプ室を形成するダイヤフラム部を有するダイヤフラムと、このダイヤフラムを保持するダイヤフラムホルダーとを備え、前記駆動体を揺動させることにより前記ダイヤフラムのダイヤフラム部を往復動させ前記ポンプ室を拡縮させることでポンプ作用をするダイヤフラムポンプにおいて、前記駆動軸の他端と前記非貫通孔の底部との間に弾性部材を介装したものである。   In order to achieve this object, the present invention provides a crank base that rotates integrally with an output shaft of a motor, and an end portion that is inclined with respect to the output shaft at a portion that is eccentric from the output shaft of the crank base. And a drive shaft having a non-through hole pivotally supported at the other end of the drive shaft and extending in a direction substantially orthogonal to the axis of the non-through hole. A diaphragm having a diaphragm, a diaphragm attached to a driver of the driver and forming a pump chamber, and a diaphragm holder for holding the diaphragm, and the diaphragm of the diaphragm by swinging the driver In a diaphragm pump that pumps by reciprocating the pump chamber to expand and contract the pump chamber, an elastic member is interposed between the other end of the drive shaft and the bottom of the non-through hole. It is.

本発明は、前記発明のいずれか一つの発明において、前記ダイヤフラムホルダーに、前記駆動体の揺動中心部を当接させる当接部を設けたものである。   According to the present invention, in any one of the above inventions, the diaphragm holder is provided with an abutting portion for abutting a rocking center portion of the driving body.

本発明は、前記発明において、前記弾性部材を圧縮コイルばねとしたものである。   The present invention is the above invention, wherein the elastic member is a compression coil spring.

本発明は、前記発明のいずれか一つの発明において、前記駆動軸の他端と前記弾性部材との間にボールを介在させたものである。   According to the present invention, in any one of the above inventions, a ball is interposed between the other end of the drive shaft and the elastic member.

本発明によれば、駆動軸の他端と非貫通孔の底部との間に弾性部材を介装したことにより、駆動体の揺動動作中に駆動軸の他端と非貫通孔の底部とが直接当接しないから、これらの間の衝突によって発生する機械音を抑制することができる。また、弾性部材の弾性力によって常に駆動体がダイヤフラムホルダーの当接部に当接するように予圧が加えられているため、駆動体の揺動動作中に駆動体とダイヤフラムラムホルダーとの間で当接および離間の繰り返しによって発生する機械音を抑制することができる。さらに、常に駆動体がダイヤフラムホルダーの当接部に当接するように予圧が加えられていることにより、駆動体の当接部への当接状態が保持されるため、駆動体の当接部を中心とした揺動動作が安定するからポンプ作用も安定する。   According to the present invention, the elastic member is interposed between the other end of the drive shaft and the bottom of the non-through hole, so that the other end of the drive shaft and the bottom of the non-through hole are moved during the swinging operation of the drive body. Are not in direct contact with each other, it is possible to suppress mechanical noise generated by a collision between them. Further, since the preload is applied so that the driving body always comes into contact with the contact portion of the diaphragm holder by the elastic force of the elastic member, the contact between the driving body and the diaphragm ram holder is applied during the swinging operation of the driving body. Mechanical noise generated by repeated contact and separation can be suppressed. Furthermore, since the preload is applied so that the drive body always comes into contact with the contact portion of the diaphragm holder, the contact state of the drive body with the contact portion is maintained. Since the central swinging motion is stable, the pumping action is also stable.

また、駆動軸の他端と非貫通孔の底部との間および駆動体とダイヤフラムラムホルダーとの間で衝突が発生しないことにより、これらの間での部品の摩耗を規制することができるから耐久性が向上する。また、駆動体の揺動動作中に、ダイヤフラムから駆動体にかかる負荷に変動が生じても、この変動を弾性部材によって吸収できるため、駆動体の揺動動作が円滑に行われるから安定したポンプ作用が得られる。   In addition, since there is no collision between the other end of the drive shaft and the bottom of the non-through hole and between the drive body and the diaphragm ram holder, it is possible to regulate the wear of parts between them. Improves. In addition, even if fluctuations occur in the load applied to the drive body from the diaphragm during the swinging operation of the drive body, the fluctuations can be absorbed by the elastic member, so the drive body swings smoothly and the pump is stable. The effect is obtained.

以下、本発明の実施の形態を図に基づいて説明する。図１は本発明に係るダイヤフラムポンプの断面図である。これらの図において、上述した図２に示す従来技術において説明した同一または同等の部材については同一の符号を付し詳細な説明は適宜省略する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a diaphragm pump according to the present invention. In these drawings, the same or equivalent members described in the prior art shown in FIG. 2 described above are denoted by the same reference numerals, and detailed description thereof is omitted as appropriate.

本発明に係るダイヤフラムポンプ１の特徴とするところは、駆動体６の非貫通孔７の底部７ａと、駆動軸５の上端５ａに対接させたボール３０との間に弾性部材として機能する圧縮コイルばね３１を介装させた点にある。したがって、クランク台４の回転中に、駆動体６が駆動軸５の軸線方向に移動しようとしても、圧縮コイルばね３１が介装されていることによって、駆動軸５の上端５ａと非貫通孔７の底部７ａとが当接しないから、これらの間での衝突によって発生する機械音を抑制することができる。   The diaphragm pump 1 according to the present invention is characterized by a compression functioning as an elastic member between the bottom 7a of the non-through hole 7 of the driving body 6 and the ball 30 in contact with the upper end 5a of the driving shaft 5. The coil spring 31 is interposed. Therefore, even if the drive body 6 tries to move in the axial direction of the drive shaft 5 during the rotation of the crank table 4, the compression coil spring 31 is interposed, so that the upper end 5 a of the drive shaft 5 and the non-through hole 7. Since the bottom portion 7a does not come into contact with each other, it is possible to suppress mechanical noise generated by a collision between them.

また、圧縮コイルばね３１の弾発力によって駆動体６の頭部６ａがダイヤフラムホルダー１０の当接部１１に常に当接するような予圧が加えられているため、駆動体６の揺動動作中に頭部６ａと当接部１１との間で当接および離間の繰り返しによって発生する機械音を抑制することができる。さらに、常に駆動体６がダイヤフラムホルダー１０の当接部１１に当接するように予圧が加えられていることにより、駆動体６の当接部１１への当接状態が保持されるため、駆動体６の当接部１１を中心とした揺動動作が安定するからポンプ作用も安定する。   Further, since the preload is always applied so that the head 6a of the driving body 6 is always in contact with the contact portion 11 of the diaphragm holder 10 by the elastic force of the compression coil spring 31, the driving body 6 is being swung. Mechanical noise generated by repeated contact and separation between the head 6a and the contact portion 11 can be suppressed. Further, since the preload is always applied so that the driving body 6 contacts the contact portion 11 of the diaphragm holder 10, the contact state of the driving body 6 with the contact portion 11 is maintained. Since the swinging motion around the abutting portion 11 of 6 is stabilized, the pumping action is also stabilized.

また、駆動軸５の上端５ａと非貫通孔７の底部７ａとの間および駆動体６の頭部６ａと当接部１１との間で衝突が発生しないため、これらの間での部品の摩耗を規制することができるから耐久性が向上する。また、駆動体６の揺動動作中に、ダイヤフラム１３から駆動体６にかかる負荷に変動が生じたとしても、この変動を圧縮コイルばね３１によって吸収できるため、駆動体６の揺動動作が円滑に行われるから安定したポンプ作用が得られる。また、圧縮コイルばね３１と駆動軸５の上端５ａとの間にボール３０を介在させたことにより、モータ３の駆動によりクランク台４が回転するときに、回転する駆動軸５に対して停止状態にある圧縮コイルばね３１の下端が駆動軸５の上端５ａに喰いついたり摩耗したりするようなことがない。   Further, since collision does not occur between the upper end 5a of the drive shaft 5 and the bottom 7a of the non-through hole 7 and between the head 6a of the drive body 6 and the contact portion 11, wear of parts between these parts The durability can be improved. Further, even if the load applied to the drive body 6 from the diaphragm 13 during the swinging operation of the drive body 6 can be absorbed by the compression coil spring 31, the swinging operation of the drive body 6 is smooth. Therefore, a stable pumping action can be obtained. Further, since the ball 30 is interposed between the compression coil spring 31 and the upper end 5 a of the drive shaft 5, when the crank table 4 is rotated by driving the motor 3, the rotating drive shaft 5 is stopped. Thus, the lower end of the compression coil spring 31 does not bite or wear against the upper end 5a of the drive shaft 5.

なお、本実施の形態においては、駆動体６に駆動子８を二つ設けた、いわゆる２気筒のダイヤフラムポンプについて説明したが、駆動子８が一つである１気筒の場合および３気筒以上の場合にも同様な効果が得られる。また、本実施の形態においては、駆動体６の頭部６ａをダイヤフラムホルダー１０の当接部１１に当接させ、この当接部１１を揺動中心として駆動体６を揺動させるようにしたが、駆動体６の頭部６ａを当接部１１から離間させた状態で駆動体６を揺動させるようにしてもよく、その場合は、圧縮コイルばね３１の弾発力によってボール３０が駆動軸５の上端５ａに当接した状態が保持されるため、駆動体６の揺動動作中にボール３０と駆動軸５の上端５ａとの間で衝突による機械音の発生を抑制することができる。また、非貫通孔７の底部７ａとボール３０との間に圧縮コイルばね３１を介装するようにしたが、圧縮コイルばね３１の替わりにゴム、スポンジ等の弾性体を介装させるようにしてもよい。また、圧縮コイルばね３１の下端と駆動軸５の上端５ａとの間にボール３０を介在させるようにしたが、駆動軸５の上端５ａと圧縮コイルばね３１の下端との間に発生する摩耗や喰い付きが軽微な場合は、必ずしもボール３０を介装させることはなく、駆動軸５の上端５ａと圧縮コイルばね３１の下端とを直接接触させるようにしてもよい。   In the present embodiment, a so-called two-cylinder diaphragm pump in which two driving elements 8 are provided in the driving body 6 has been described. However, in the case of one cylinder having one driving element 8 and three or more cylinders. In this case, the same effect can be obtained. Further, in the present embodiment, the head 6a of the drive body 6 is brought into contact with the contact portion 11 of the diaphragm holder 10, and the drive body 6 is swung around the contact portion 11 as a swing center. However, the driving body 6 may be swung in a state where the head 6 a of the driving body 6 is separated from the contact portion 11. In this case, the ball 30 is driven by the elastic force of the compression coil spring 31. Since the state in contact with the upper end 5a of the shaft 5 is maintained, the generation of mechanical noise due to a collision between the ball 30 and the upper end 5a of the drive shaft 5 can be suppressed during the swinging operation of the drive body 6. . Further, the compression coil spring 31 is interposed between the bottom 7a of the non-through hole 7 and the ball 30, but an elastic body such as rubber or sponge is interposed instead of the compression coil spring 31. Also good. Further, the ball 30 is interposed between the lower end of the compression coil spring 31 and the upper end 5 a of the drive shaft 5, but the wear generated between the upper end 5 a of the drive shaft 5 and the lower end of the compression coil spring 31 is reduced. When the biting is slight, the ball 30 is not necessarily interposed, and the upper end 5a of the drive shaft 5 and the lower end of the compression coil spring 31 may be brought into direct contact with each other.

本発明に係るダイヤフラムポンプの断面図である。It is sectional drawing of the diaphragm pump which concerns on this invention. 従来のダイヤフラムポンプ断面図である。It is sectional drawing of the conventional diaphragm pump.

符号の説明Explanation of symbols

１…ダイヤフラムポンプ、３…モータ、３ａ…出力軸、４…クランク台、５…駆動軸、５ａ…上端、６…駆動体、６ａ…頭部、７…非貫通穴、７ａ…底部、８…駆動子、１０…ダイヤフラムホルダー、１１…当接部、１３…ダイヤフラム、１４…ダイヤフラム部、１９…吸入弁、２０Ａ，２０Ｂ…ポンプ室、２１…吐出弁、２５…吐出筒、２６…吸入筒、３０…ボール、３１…圧縮コイルばね（弾性部材）。   DESCRIPTION OF SYMBOLS 1 ... Diaphragm pump, 3 ... Motor, 3a ... Output shaft, 4 ... Crank stand, 5 ... Drive shaft, 5a ... Upper end, 6 ... Drive body, 6a ... Head, 7 ... Non-through hole, 7a ... Bottom part, 8 ... Drive element, 10 ... Diaphragm holder, 11 ... Abutting part, 13 ... Diaphragm, 14 ... Diaphragm part, 19 ... Suction valve, 20A, 20B ... Pump chamber, 21 ... Discharge valve, 25 ... Discharge cylinder, 26 ... Suction cylinder, 30 ... ball, 31 ... compression coil spring (elastic member).

Claims (4)

モータの出力軸と一体的に回転するクランク台と、このクランク台の前記出力軸から偏心した部位に当該出力軸に対して傾斜した状態で一端部が軸着された駆動軸と、この駆動軸の他端部に回動自在に枢支される非貫通孔を有しこの非貫通孔の軸線と略直交する方向に延在する駆動子を有する駆動体と、この駆動体の駆動子に取り付けられポンプ室を形成するダイヤフラム部を有するダイヤフラムと、このダイヤフラムを保持するダイヤフラムホルダーとを備え、前記駆動体を揺動させることにより前記ダイヤフラムのダイヤフラム部を往復動させ前記ポンプ室を拡縮させることでポンプ作用をするダイヤフラムポンプにおいて、
前記駆動軸の他端と前記非貫通孔の底部との間に弾性部材を介装したことを特徴とするダイヤフラムポンプ。 A crank base that rotates integrally with the output shaft of the motor, a drive shaft having one end portion pivotally attached to a portion eccentric from the output shaft of the crank base in an inclined state with respect to the output shaft, and the drive shaft A drive body having a non-through hole pivotally supported at the other end of the shaft and having a drive element extending in a direction substantially orthogonal to the axis of the non-through hole, and attached to the drive element of the drive body A diaphragm having a diaphragm portion that forms a pump chamber, and a diaphragm holder that holds the diaphragm, and swinging the drive body to reciprocate the diaphragm portion of the diaphragm to expand and contract the pump chamber In diaphragm pumps that act as pumps,
An elastic member is interposed between the other end of the drive shaft and the bottom of the non-through hole. 前記ダイヤフラムホルダーに、前記駆動体の揺動中心部を当接させる当接部を設けたことを特徴とする請求項１記載のダイヤフラムポンプ。   The diaphragm pump according to claim 1, wherein the diaphragm holder is provided with an abutting portion for abutting an oscillation center portion of the driving body. 前記弾性部材を圧縮コイルばねとしたことを特徴とする請求項１または２記載のダイヤフラムポンプ。   3. The diaphragm pump according to claim 1, wherein the elastic member is a compression coil spring. 前記駆動軸の他端と前記弾性部材との間にボールを介在させたことを特徴とする請求項１ないし３のいずれか一項記載のダイヤフラムポンプ。   The diaphragm pump according to any one of claims 1 to 3, wherein a ball is interposed between the other end of the drive shaft and the elastic member.
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JP2005233028A (en) * 2004-02-18 2005-09-02 Oken Ltd Diaphragm pump

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JP2003293958A (en) * 2002-04-02 2003-10-15 Oken Ltd Liquid diaphragm pump
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JP2012072713A (en) * 2010-09-29 2012-04-12 Oken Ltd Negative pressure type diaphragm pump
CN102242706A (en) * 2011-07-07 2011-11-16 厦门坤锦电子科技有限公司 Micro water pump
CN108779770A (en) * 2016-03-17 2018-11-09 加德纳·丹佛·托马斯股份有限公司 Diaphragm pump
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KR101930481B1 (en) 2017-10-18 2018-12-19 (유)에코그린 Air compressor for disinfection apparatus
JP2020020265A (en) * 2018-07-30 2020-02-06 応研精工株式会社 Diaphragm pump
JP7085751B2 (en) 2018-07-30 2022-06-17 応研精工株式会社 Diaphragm pump

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