US20040169318A1 - Method of manufacturing outer tube of injector - Google Patents

Method of manufacturing outer tube of injector Download PDF

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Publication number
US20040169318A1
US20040169318A1 US10/482,478 US48247803A US2004169318A1 US 20040169318 A1 US20040169318 A1 US 20040169318A1 US 48247803 A US48247803 A US 48247803A US 2004169318 A1 US2004169318 A1 US 2004169318A1
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United States
Prior art keywords
molten resin
cavity
cylindrical vacant
mold
sprue
Prior art date
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Abandoned
Application number
US10/482,478
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English (en)
Inventor
Atsushi Chiba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Top KK
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Top KK
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Filing date
Publication date
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Assigned to KABUSHIKI KAISHA TOP reassignment KABUSHIKI KAISHA TOP ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHIBA, ATSUSHI
Publication of US20040169318A1 publication Critical patent/US20040169318A1/en
Priority to US11/514,847 priority Critical patent/US7229276B2/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/57—Exerting after-pressure on the moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/261—Moulds having tubular mould cavities
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/57—Exerting after-pressure on the moulding material
    • B29C45/572—Exerting after-pressure on the moulding material using movable mould wall or runner parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/57—Exerting after-pressure on the moulding material
    • B29C45/572—Exerting after-pressure on the moulding material using movable mould wall or runner parts
    • B29C2045/577—Exerting after-pressure on the moulding material using movable mould wall or runner parts pushing the material in the runner channel until a pin or slider reaches the mould cavity wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/27—Sprue channels ; Runner channels or runner nozzles
    • B29C45/2701—Details not specific to hot or cold runner channels
    • B29C45/2708—Gates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/753—Medical equipment; Accessories therefor
    • B29L2031/7544—Injection needles, syringes

Definitions

  • the present invention relates to a method for manufacturing an outer tube of an injector made from a synthetic resin.
  • the injector outer tube 1 has a barrel portion 2 , a lure-tapered portion 3 arranged at a front end of the barrel portion 2 , and a flange portion at a rear end of the barrel portion 2 for holding by fingers.
  • the injector outer tube 1 is normally produced by injection molding by using a metal mold 11 consisting of a fixed mold 13 , a movable mold 14 , and a core pin (core) 15 .
  • the fixed mold 13 has a hole portion 12 having a shape of the outer shape of the injector outer tube 1 .
  • the hole portion 12 is provided vertically on a parting line 16 with the movable mold 14 .
  • the core pin 15 is adapted to pierce the movable mold 14 to be inserted into the hole portion 12 .
  • a molten resin is injected into a cavity 17 formed by the hole portion 12 , the movable mold 14 , and the core pin 15 .
  • the cavity 17 consists of a barrel forming portion 18 and a lure-taper forming portion 19 formed by the core pin 15 inserted into the hole 12 and a flange forming portion 20 formed between the hole portion 12 and the movable mold 14 .
  • the fixed mold 13 has a sprue, a runner, and a gate (not depicted) for guiding a molten resin to the cavity 17 .
  • Injection of a molten resin into the cavity 17 is performed as follows, for example.
  • a plurality (three in the figure) of chip gates 31 are arranged at the front end of the barrel forming portion 18 ; as shown in FIG. 7B, a plurality (two in the figure) of chip gates 31 are arranged at the base of the lure-taper forming portion 19 ; or as shown in FIG. 7C, a plurality (two in the figure) of pin point gates 31 are arranged at the front end of the barrel forming portion 18 .
  • FIG. 7A to FIG. 7C for explanation, the barrel forming portion 18 , the lure-taper forming portion 19 , the runner 23 , and the gate 31 arranged inside the fixed mold are exposed.
  • the injector outer tube 1 is used in combination with a plunger (not depicted) sliding along the inner wall of the barrel portion 2 .
  • a plunger (not depicted) sliding along the inner wall of the barrel portion 2 .
  • the plunger has a gasket made from a thermoplastic elastomer, if the circularity is low, the gasket is creep-deformed, causing a problem that a liquid may leak when the injector is used.
  • the present invention provides a manufacturing method of an outer tube of an injector comprising the step of molding an outer tube of an injector by injecting a molten resin into a cavity defined by a metal mold comprising: a fixed mold having a hole portion having a shape along an outer shape of the injector outer tube consisting of a barrel portion, a taper portion arranged at a front end of the barrel where an injection needle is mounted, and a flange portion arranged at a rear end of the barrel, the fixed mold being provided vertical to a parting line defined by a rear end of the flange portion forming portion; a movable mold for closing the hole portion along the parting line; and a core piercing the movable mold and inserted into the hole portion, wherein the fixed mold includes a sprue for guiding the molten resin and a runner branching from the sprue; the movable mold includes a cylindrical vacant portion arranged vertical to the parting line
  • a cavity having a shape of the injector outer tube is formed by the hole portion of the fixed mold, the movable mold closing the hole portion, and the core piercing the movable mold and is inserted into the hole portion.
  • the cavity has a space between the hole portion and the core for forming a barrel portion of the injector outer tube and a portion for forming a barrel front end portion at the front end of the barrel portion.
  • the cavity has a portion between the hole portion of the rear end of the barrel portion and the movable mold for forming a the flange portion. The portion for forming the flange portion communicates with the cylindrical vacant portion arranged in the movable mold.
  • the molten resin is firstly injected into the cylindrical vacant portion and then introduced from the cylindrical vacant portion into the portion for forming the flange portion. After filling the portion for forming the flange portion, the molten resin is introduced into a portion for forming the injector outer tube and flows from the portion for forming the flange portion into the portion for forming the barrel front end portion.
  • the molten resin is introduced into the barrel portion for forming the injector outer tube after filling the portion for forming the flange portion and accordingly, the flow front of the resin flows uniformly along the circumferential direction of the barrel portion. This makes a uniform wall thickness of the barrel portion and prevents generation of warping.
  • the manufacturing method according the present invention is characterized in that the metal mold includes a push pin provided slidably along an inner wall of the cylindrical vacant portion and having a tip end which can proceed up to the parting line; the molten resin is injected when the push pin is waiting at a predetermined wait position which is at opposite side of the fixed mold with respect to a connection portion of the submarine gate; and when the molten resin has become half-molten state, the push pin is made to proceed up to the parting line so as to introduce the molten resin with pressure from the cylindrical vacant portion into the cavity.
  • the push pin is made to proceed up to the parting line and the resin is introduced with pressure from the cylindrical vacant portion into the cavity. Accordingly, when removing the metal molded injector outer tube from the metal mold, there is no case that the flange portion is connected to a resin solidified in the cylindrical vacant portion. This can eliminate the process of cutting a resin solidified in the cylindrical vacant portion. Moreover, it is possible to make smooth the portion where the flange is connected to the cylindrical vacant portion.
  • timing to advance the push pin may be any time after the molten resin is injected and before the resin is solidified.
  • the wait position of the push pin is modified in a direction apart from the connection portion of the submarine gate, so as to inject the molten resin, thereby compensating the insufficient resin in the cavity.
  • Modification of the wait position of the push pin may be performed by mechanically retreating the push pin in a direction apart from the connection portion of the submarine gate or by cutting off the tip end of the push pin.
  • the manufacturing method according the present invention may be such that the metal mold has: a plurality of hole portions provided in the fixed mold; a plurality of cylindrical vacant portions provided in the movable mold closing the respective hole portions along the parting line and communicating with portions where the flange portions of the respective hole portions are formed; and a plurality of cavities defined by the cores piercing the movable molds and are introduced into the respective hole portions,
  • the fixed mold has a sprue for guiding the molten resin and a plurality of runners branching from the sprue
  • the movable mold has a plurality of submarine gates communicating with the respective runners and connected to an intermediate portion of the respective cylindrical vacant portions, and the molten resin is injected from the sprue via the runners and the submarine gates into the respective cylindrical vacant portions and via the cylindrical vacant portions into the respective cavities.
  • a plurality of injector outer tubes of injectors can be simultaneously obtained by injecting a molten resin from the sprue via
  • the molten resin amount may be insufficient in a particular cavity among the plurality of cavities.
  • the wait position of the push pin is changed in a direction apart from the connection portion of the submarine gate so as to inject the molten resin and to thereby supplement the insufficient resin in the cavity.
  • the molten resin may be one selected from a group consisting of polypropylene, polycarbonate, and polymethylpentene.
  • FIG. 1 is a perspective view showing a configuration example of an outer tube of an injector obtained by the manufacturing method of the present invention.
  • FIG. 2 is a cross sectional view explaining an example of the manufacturing method of the present invention.
  • FIG. 3 is a cross sectional view explaining a partially molded product of the injector outer tube obtained by the manufacturing method of the present invention.
  • FIG. 4 is a cross sectional view about IV-IV of FIG. 3.
  • FIG. 5 is a cross sectional view explaining an example of the manufacturing method of the present invention.
  • FIG. 6 is a cross sectional view explaining a conventional manufacturing method.
  • FIG. 7 is a perspective view showing gate arrangement in the conventional manufacturing method.
  • FIG. 8 is a cross sectional view explaining another gate arrangement in the conventional manufacturing method.
  • FIG. 9 is a cross sectional view explaining a barrel portion of the injector outer tube obtained by the conventional manufacturing method.
  • the present embodiment is for manufacturing an injector outer tube 1 shown in FIG. 1.
  • the injector outer tube 1 is made from, for example, polypropylene and has a lure-taper portion 3 at the front end of a cylinder-shaped barrel portion 2 where a injection needle is mounted and a flange portion 4 at the rear end of the barrel portion 2 for holding by fingers.
  • the flange portion 4 has an elliptical shape having a concave portion 5 made by taking out meat on the surface opposite to the barrel portion 2 and an injection trace (not depicted).
  • the injector outer tube 1 is produced by using a metal mold 11 shown in FIG. 2A.
  • the metal mold 11 consists of a fixed mold 13 having a hole portion 12 having a shape along the outer shape of the injector outer tube 1 , a movable mold 14 for closing the hole 12 , and a core pin (core) 15 to be inserted through the movable mold 14 into the hole portion 12 .
  • the hole portion 12 is provided vertical to a parting line 16 and the movable mold 114 is arranged so as to close the hole portion 12 along the parting line 16 .
  • the metal mold 11 By the metal mold 11 , the hole portion 12 , the movable mold 14 , and the core pin 15 constitute a cavity 17 having the shape of the injector outer tube 1 .
  • the cavity 17 has a barrel forming portion 18 between the hole portion 12 and the core pin 15 and has a lure-taper forming portion 19 at the front end of the barrel forming portion 18 and a flange forming portion 20 at the rear end of the barrel forming portion 18 .
  • the barrel forming portion 18 , the lure-taper forming portion 19 , and the flange forming portion 20 correspond to the barrel portion 2 , the lure-taper portion 3 , and the flange portion 4 shown in FIG. 1, respectively.
  • the movable mold 14 has a cylindrical vacant portion 21 communicating with the flange forming portion 20 and a submarine gate 24 connected to an intermediate portion of the cylindrical vacant portion 21 .
  • the cylindrical vacant portion 21 is provided vertical to the parting line 16 and has a push pin 25 to introduce with pressure the resin filled inside into the cavity 17 .
  • the push pin 25 waits at a predetermined wait position in the cylindrical vacant portion 21 opposite to the fixed mold with respect to the connection portion of the submarine gate 24 .
  • the fixed mold 13 has a sprue 22 for guiding the molten resin injected from an injection apparatus (not depicted) and a runner 23 branching from the sprue 22 .
  • the runner 23 communicates with the submarine gate 24 .
  • the submarine gate 24 extend below the connection portion with the runner 23 by 45 degrees and is connected to the intermediate portion of the cylindrical vacant portion 21 .
  • a molten resin R injected from an injection apparatus is introduced via the sprue 22 , the runner 23 , and the submarine gate 24 into the cylindrical vacant portion 21 .
  • the molten resin R introduced into the cylindrical vacant portion 21 is then introduced into the flange forming portion 20 and after filling the flange forming portion 20 , flows into the barrel forming portion 18 .
  • the molten resin R is introduced into the barrel forming portion 18 after filling the flange forming portion. Accordingly, like a partially molded product 1 a of the injector outer tube 1 shown in FIG. 3, the flow front F can be formed almost uniformly along the circumference of the barrel forming portion 18 . It should be noted that the partially molded product 1 a of FIG. 3 is formed by intentionally reducing the amount of the molten resin R introduced into the cavity 17 in the metal mold 11 shown in FIG. 2A. As a result, as shown in FIG. 4, the barrel portion 2 has almost uniform wall thickness along the circumference of the barrel portion 2 .
  • the cylindrical vacant portion 21 do not interfere with the core pint 1 , so that the molten resin R is uniformly introduced into the barrel forming portion 18 .
  • the cylindrical vacant portion 21 is arranged so as to communicate with the flange forming portion 20 at a position as far as possible from the barrel forming portion 18 .
  • a boss is formed on the surface of the flange portion 4 opposite to the barrel portion 2 by the molten resin R filled in the cylindrical vacant portion 21 by the molten resin R filled in the cylindrical vacant portion 21 .
  • the flange portion 4 is used for holding by fingers when sliding a plunger (not depicted) along the inner wall of the injector outer tube 1 and presence of the boss hinders the operation.
  • the boss can be cut off when the metal molded injector outer tube is removed from the metal mold.
  • the push pin 25 provided in the cylindrical vacant portion 21 and is normally waiting at the aforementioned wait position is made to proceed toward the fixed mold 13 until it reaches the parting line 16 .
  • only an injection trace (not depicted) remains on the surface of the flange portion 4 opposite to the barrel portion 2 and the aforementioned boss is not formed, thereby obtaining a smooth surface.
  • the push pin 25 is made to proceed so as to introduce with pressure the resin from the cylindrical vacant portion 21 into the cavity 17 , it is possible to obtain an effect to prevent formation of a vacant portion due to the insufficient resin.
  • the metal mold 11 may have the fixed mold 13 having a plurality of hole portions 12 ; the movable mold 14 having a plurality of cylindrical vacant portions 21 communicating with the flange forming portions 20 of the respective hole portions 12 ; and a plurality of core pins 15 to be inserted into the respective holes 112 , thereby forming a plurality of cavities 17 .
  • the movable mold 14 has a plurality of submarine gates 24 connected to the intermediate portion of the respective cylindrical vacant portions 21 .
  • the fixed mold 11 has the sprue 22 for introducing the molten resin R and a plurality of runners 23 branching from the sprue 22 to communicate with the respective submarine gates 24 .
  • the molten resin R is injected from the sprue 22 via the runners 23 and the submarine gates 24 into the respective cylindrical vacant portions 21 and into the cavities 17 , thereby simultaneously obtaining a plurality of injector outer tubes 1 .
  • the metal mold for simultaneously producing a plurality of injector outer tubes 1 there is a case that the molten resin R is insufficient in a particular cavity 17 among the plurality of cavities.
  • the wait position of the push pin 25 is modified apart from the connection portion of the submarine gate 24 when performing injection of the molten resin R.
  • the more molten resin R is introduced into the cylindrical vacant portion 21 .
  • the push pin 25 when the push pin 25 is made to proceed toward the fixed mold 13 to reach the parting line, the amount of the resin introduced with pressure into the cavity 17 is increased, thereby compensating the insufficient resin in that cavity.
  • the cavity 17 where the molten resin R becomes insufficient can be experimentally known after production of the metal mold 11 and actually performing an injection molding of the injector outer tube 1 .
  • FIG. 5 shows the metal mold 11 having two cavities 17 arranged at right and left of the sprue 22 but the number of cavities may be more than two. In this case, a plurality of cavities may be provided radially around the sprue 22 .
  • the push pin 25 was operated by controlling the injection delay between 0.2 to 2 seconds while monitoring the injection time by the pre-ejector function of the motor injection apparatus.
  • an injector outer tube 1 having a preferable outer view at barrel portion 2 and the lure-taper portion 3 was obtained.
  • the injector outer tube obtained in this example was evaluated by a circularity measurement apparatus and it was found that as compared to a conventional injector outer tube, the circularity was high and the cylindricality was preferable.
  • the injection trace was almost identical to an injection trace of a push pin used in an ordinary injection molding. There was no cloudiness or gate refuse and it was possible to form a smooth surface of the flange portion 4 opposite to the barrel portion.
  • the injector outer tube 1 was molded by polypropylene.
  • a synthetic resin such as polycarbonate and polymethylpentene (TPX).
  • the flange portion 4 should satisfy the standard of the thickness and shape for suppressing rolling and capability to be connected to a syringe pump.
  • the thickness should be below 3 mm or not greater than 3.5 mm as is defined by ISO7886-2 “Sterile hypodermic syringes for single use Part 2”. Which of the aforementioned thickness is employed is determined by the size of the injector. For example, for the injector of nominal size of 5 mL in this example, the thickness of the flange portion should be below 3 mm.
  • the runner when employing the side gate for introducing the molten resin R from the side surface of the flange forming portion 18 , the runner should be cut off from the metal molded injector outer tube at a later step.
  • the gate burr In the case of a U-shape arranged banana gate for introducing the molten resin R from the side of the movable mold 14 of the flange forming portion 18 , the gate burr often remains and the gate cutting surface is not preferable.
  • the present invention can be used for a disposable injector used as a medical instrument.
US10/482,478 2001-07-03 2002-06-12 Method of manufacturing outer tube of injector Abandoned US20040169318A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/514,847 US7229276B2 (en) 2001-07-03 2006-09-05 Apparatus for manufacturing outer tube of injector

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001-202525 2001-07-03
JP2001202525 2001-07-03
PCT/JP2002/005833 WO2003004244A1 (fr) 2001-07-03 2002-06-12 Procede de fabrication du tube externe d'un injecteur

Related Child Applications (1)

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US11/514,847 Division US7229276B2 (en) 2001-07-03 2006-09-05 Apparatus for manufacturing outer tube of injector

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US20040169318A1 true US20040169318A1 (en) 2004-09-02

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US10/482,478 Abandoned US20040169318A1 (en) 2001-07-03 2002-06-12 Method of manufacturing outer tube of injector
US11/514,847 Expired - Fee Related US7229276B2 (en) 2001-07-03 2006-09-05 Apparatus for manufacturing outer tube of injector

Family Applications After (1)

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US11/514,847 Expired - Fee Related US7229276B2 (en) 2001-07-03 2006-09-05 Apparatus for manufacturing outer tube of injector

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US (2) US20040169318A1 (ja)
EP (1) EP1405708A4 (ja)
JP (1) JP4365210B2 (ja)
AU (1) AU2002311184B2 (ja)
CA (1) CA2452560A1 (ja)
MY (1) MY138221A (ja)
TW (1) TW529992B (ja)
WO (1) WO2003004244A1 (ja)

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US8475158B2 (en) 2010-06-16 2013-07-02 Mold-Masters (2007) Limited Edge-gated nozzle
GB2533806A (en) * 2014-12-31 2016-07-06 Gen Electric Airway adapter and method for molding the airway adapter
US20160199591A1 (en) * 2013-09-19 2016-07-14 Terumo Kabushiki Kaisha Needle-equipped syringe and injection molding die for the same
CN109834949A (zh) * 2018-06-13 2019-06-04 义乌市环稠机械设备有限公司 推胶出口成型机构
US20190299507A1 (en) * 2016-10-04 2019-10-03 Gerresheimer Regensburg Gmbh Method for producing a syringe with an integrated closure element
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ITMO20070016A1 (it) * 2007-01-22 2008-07-23 Lameplast Spa Procedimento e attrezzatura per la fabbricazione di confezioni per prodotti cosmetici, medicinali, farmaceutici o simili
JP5178099B2 (ja) 2007-09-04 2013-04-10 富士通コンポーネント株式会社 Ｋｖｍスイッチ及びその制御方法
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JP5802034B2 (ja) * 2011-03-25 2015-10-28 テルモ株式会社 シリンジ
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US9901725B2 (en) 2012-10-01 2018-02-27 Bayer Healthcare Llc Overmolded medical connector tubing and method
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DE102016003970A1 (de) 2015-04-02 2016-10-06 Otto Männer Innovation GmbH Heißkanalvorrichtung zum seitlichen Angießen mit kontinuierlicher Ventilnadelbewegung
CN105014888B (zh) * 2015-08-06 2017-03-29 北京隆轩橡塑有限公司 一种带有补压补缩功能顶针装置的注塑模具及其使用方法
JP2017053933A (ja) * 2015-09-08 2017-03-16 日本電産サンキョー株式会社 レンズユニット
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JP4365210B2 (ja) 2009-11-18
US7229276B2 (en) 2007-06-12
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EP1405708A4 (en) 2007-09-05
EP1405708A1 (en) 2004-04-07

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