JPH05107636A - Cartridge driving mechanism for camera - Google Patents

Cartridge driving mechanism for camera

Info

Publication number
JPH05107636A
JPH05107636A JP3296361A JP29636191A JPH05107636A JP H05107636 A JPH05107636 A JP H05107636A JP 3296361 A JP3296361 A JP 3296361A JP 29636191 A JP29636191 A JP 29636191A JP H05107636 A JPH05107636 A JP H05107636A
Authority
JP
Japan
Prior art keywords
cartridge
spool shaft
drive member
shaft
center
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3296361A
Other languages
Japanese (ja)
Inventor
Tsutomu Wakabayashi
勤 若林
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.)
Nikon Corp
Original Assignee
Nikon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikon Corp filed Critical Nikon Corp
Priority to JP3296361A priority Critical patent/JPH05107636A/en
Priority to US07/920,883 priority patent/US5347332A/en
Publication of JPH05107636A publication Critical patent/JPH05107636A/en
Pending legal-status Critical Current

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  • Details Of Cameras Including Film Mechanisms (AREA)

Abstract

PURPOSE:To enable the driving member of a camera and the spool shaft of a cartridge to be engaged even when the driving member and the center of the spool shaft are shifted to some extent and to surely feed a film. CONSTITUTION:In the cartridge driving mechanism of the camera which feeds the film from the cartridge 10 by engaging the driving member 35 with the spool shaft 12 of the cartridge 10, transmitting the rotation of a motor to the driving member 35 through a power transmission member 38 and rotating the spool shaft 12, the driving member 35 is set so that it can be moved in a radial direction by prescribed quantity with respect to the transmission member 38. Besides, a pressing means 38 which presses the driving member 35 in the radial direction so that the rotational center of the driving member 35 and the rotational center of the transmission member 38 are made to almost coincide with each other and a shaft member 32 which abuts on the shaft 12 of the loaded cartridge 10, moves the driving member 35 in the radial direction by resisting to the above mentioned pressing and obtains such a state that the driving member 35 is centered with respect to the spool shaft 12 are provided.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、装填されたカ−トリッ
ジのスプール軸を回転させてフィルムを送出するカメラ
のカ−トリッジ駆動機構に関し、特にスプール軸などの
芯ずれに起因する装填ミスの防止を図ったものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cartridge drive mechanism of a camera for rotating a spool shaft of a loaded cartridge to feed a film, and particularly to a loading error caused by misalignment of the spool shaft or the like. This is to prevent it.

【0002】[0002]

【従来の技術】米国特許4,832,275号公報には、次のよ
うなフィルムカ−トリッジが開示されている。このカ−
トリッジは、フィルムがスプール軸に巻回された状態で
本体内に収容され、カメラの駆動部材によりこのスプー
ル軸を正転させることによりフィルムを本体内から送出
し、また逆転させることにより本体内に巻戻す。そし
て、カ−トリッジ単体で存在するときにはフィルムが先
端まで本体内に収容されている。このタイプのカ−トリ
ッジは、フィルム先端が外部に露出していないので取扱
いが簡単であり、不用意にフィルムをカ−トリッジから
引張り出してしまうことがない。ここで、このようなカ
−トリッジをカメラに装填する場合には、従来カ−トリ
ッジのようにフィルムを手で引出してカメラの巻上スプ
ールに巻付けるといった動作が不要であるので、カメラ
の底面にカ−トリッジ装填孔を設け、例えば電池を装填
する要領でその装填孔から縦方向にカ−トリッジを装填
する方式(以下、ドロップインロード方式と呼ぶ)が便
利である。
2. Description of the Related Art U.S. Pat. No. 4,832,275 discloses the following film cartridge. This car
The tridge is stored in the main body in a state where the film is wound around the spool shaft, and the film is sent from the inside of the main body by rotating the spool shaft in the forward direction by the driving member of the camera, and is also rotated inside the main body. Rewind. When the cartridge is present as a single body, the film is housed in the main body up to the tip. This type of cartridge is easy to handle because the tip of the film is not exposed to the outside, and the film is not inadvertently pulled out from the cartridge. Here, when such a cartridge is loaded in the camera, it is not necessary to manually pull out the film and wind it on the winding spool of the camera as in the conventional cartridge, so that the bottom of the camera is not required. It is convenient to provide a cartridge loading hole in the cartridge and to load the cartridge in the vertical direction from the loading hole in the manner of loading a battery (hereinafter referred to as a drop-in load method).

【0003】[0003]

【発明が解決しようとする課題】ところで、このような
ドロップインロード方式により装填されたカ−トリッジ
のスプール軸を回転させるには、カメラ側の駆動部材に
スプール軸を係合させる必要があり、この係合が正しく
行われないとフィルム給送が不可能となる。しかしなが
ら、上述したカ−トリッジは、上記米国特許4,832,275
号公報の第1図に示されるように、カ−トリッジ本体が
2つに分割されており(合成樹脂で作成するため)、特
にスプール軸を保持する部分が2分割されている。この
ためスプール軸の中心位置を本体に対して精度よく保持
することが困難であり、製造時にスプール軸の中心位置
が大きくバラつくことになる。このようにスプール軸の
中心位置が大きくバラつくと、上述のドロップイン方式
によりカ−トリッジをカメラに装填する際、カメラの駆
動部材とスプール軸との中心が一致せずにこれらが係合
せず、フィルム給送が不可能となるおそれが多分にあ
る。これを防止する措置として、駆動部材の係合部の外
径をスプール軸の係合用凹部の内径よりも想定される芯
ずれの分だけ小さくして自由度を持たせることが考えら
れるが、あまり係合部の外径を小さくすると、本来係合
すべきでない位相で係合されしまい、駆動部材の回転が
スプール軸に伝達できなくなるおそれがあり、この場合
もフィルム給送が不可能となる。
By the way, in order to rotate the spool shaft of the cartridge loaded by such a drop-in-load method, it is necessary to engage the spool shaft with the drive member on the camera side. If this engagement is not performed correctly, the film cannot be fed. However, the above-mentioned cartridge is described in the above-mentioned U.S. Pat. No. 4,832,275.
As shown in FIG. 1 of the publication, the cartridge body is divided into two parts (because it is made of synthetic resin), and in particular, the part that holds the spool shaft is divided into two parts. For this reason, it is difficult to accurately hold the center position of the spool shaft with respect to the main body, and the center position of the spool shaft greatly varies during manufacturing. If the center position of the spool shaft greatly varies as described above, when the cartridge is loaded into the camera by the above-mentioned drop-in method, the center of the driving member of the camera and the center of the spool shaft do not coincide with each other, and they do not engage with each other. However, there is a possibility that the film cannot be fed. As a measure to prevent this, it is conceivable to make the outer diameter of the engaging portion of the drive member smaller than the inner diameter of the engaging recess of the spool shaft by the amount of the assumed misalignment to give a degree of freedom. If the outer diameter of the engaging portion is reduced, the engaging portion may be engaged in a phase that should not be engaged, and the rotation of the driving member may not be transmitted to the spool shaft. In this case as well, the film cannot be fed.

【0004】本発明の目的は、カメラの駆動部材とスプ
ール軸との中心がある程度ずれていても両者が係合可能
で、かつ確実にフィルム給送が可能なカメラのカ−トリ
ッジ駆動機構を提供することにある。
An object of the present invention is to provide a cartridge drive mechanism for a camera in which the drive member of the camera and the spool shaft can be engaged with each other even if they are displaced from each other to some extent, and the film can be reliably fed. To do.

【0005】[0005]

【課題を解決するための手段】一実施例を示す図1およ
び図6に対応付けて説明すると、本発明は、装填された
カ−トリッジ10のスプール軸12と係合可能な駆動部
材35と、駆動部材35にモータの駆動力を伝達する動
力伝達部材38とを備え、駆動部材35の回転によりス
プール軸35を回転させてフィルムをカ−トリッジ10
から送出するカメラのカ−トリッジ駆動機構に適用され
る。そして、上記駆動部材35を、動力伝達部材38に
対して径方向に所定量だけ移動可能とするとともに、駆
動部材35の回転中心が動力伝達部材38の回転中心と
略一致するように駆動部材35を径方向に付勢する付勢
手段39(例えば、円錐コイルばね)と、装填されるカ
−トリッジ10のスプール軸12と当接し、上記付勢に
抗して駆動部材35を径方向へ移動し、駆動部材35が
スプール軸12に対して芯出しされた状態を得る軸部材
32とを具備し、これにより上記問題点を解決する。
1 and 6, which show an embodiment, a drive member 35 engageable with a spool shaft 12 of a loaded cartridge 10 will be described. And a power transmission member 38 for transmitting the driving force of the motor to the driving member 35, and the spool shaft 35 is rotated by the rotation of the driving member 35 to rotate the film to the cartridge 10.
It is applied to the cartridge drive mechanism of the camera which sends from the camera. The drive member 35 is movable in the radial direction with respect to the power transmission member 38 by a predetermined amount, and the rotation center of the drive member 35 substantially coincides with the rotation center of the power transmission member 38. The biasing means 39 (for example, a conical coil spring) that biases the drive shaft 35 in the radial direction and the spool shaft 12 of the cartridge 10 to be loaded, and moves the drive member 35 in the radial direction against the biasing force. Then, the drive member 35 is provided with the shaft member 32 that obtains a state of being centered with respect to the spool shaft 12, thereby solving the above-mentioned problem.

【0006】[0006]

【作用】付勢手段39は、駆動部材35の回転中心が動
力伝達部材38の回転中心と略一致するように駆動部材
35を径方向に付勢する。この状態で偏心したカ−トリ
ッジ10が装填されると、軸部材32が装填されるカ−
トリッジ10のスプール軸12と当接し、上記付勢に抗
して駆動部材35を径方向へ移動し、駆動部材35がス
プール軸12に対して芯出しされた状態とする。これに
よりカ−トリッジ10のスプール軸12と駆動部材と3
5が係合可能となる。
The urging means 39 urges the drive member 35 in the radial direction so that the rotation center of the drive member 35 substantially coincides with the rotation center of the power transmission member 38. When the eccentric cartridge 10 is loaded in this state, the shaft member 32 is loaded.
The drive member 35 is brought into contact with the spool shaft 12 of the trench 10 and moves in the radial direction against the above-mentioned urging, so that the drive member 35 is centered with respect to the spool shaft 12. As a result, the spool shaft 12 of the cartridge 10 and the drive member 3
5 can be engaged.

【0007】なお、本発明の構成を説明する上記課題を
解決するための手段と作用の項では、本発明を分かり易
くするために実施例の図を用いたが、これにより本発明
が実施例に限定されるものではない。
Incidentally, in the section of means and action for solving the above problems for explaining the constitution of the present invention, the drawings of the embodiments are used for the purpose of making the present invention easy to understand. It is not limited to.

【0008】[0008]

【実施例】図1〜図9により本発明の一実施例を説明す
る。図5は、上述した米国特許4,832,275号公報に開示
されたと同様のフィルムカ−トリッジを示す平面図、図
6はその縦方向部分断面図である。カ−トリッジ10の
筒体11内部にはスプール軸12が回転可能に軸支さ
れ、このスプール軸12の回りにフィルム(不図示)が
巻回されている。スプール軸12の上端部は筒体11上
面の孔部11aから上方に突出され、スプール軸12の
周面と孔部11a内面との間には隙間が設けられてい
る。この隙間の分だけスプール軸12は、その軸と直交
する方向、すなわち径方向に移動可能とされる。またス
プール軸12の上端面には円柱状の凹部12aが形成さ
れるとともに、この凹部12aの底面12bにはテーパ
面TPを有するテーパ状の凹部12cが形成され、さら
にその先端に孔部12dが形成されている。また円柱状
凹部12a内には、後述するカメラの駆動部材35(図
1)と係合可能な係合用突起部12eが2ヵ所に形成さ
れている。ここで上記凹部12a,12c,孔部12d
の中心は一致している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. FIG. 5 is a plan view showing a film cartridge similar to that disclosed in the above-mentioned U.S. Pat. No. 4,832,275, and FIG. 6 is a vertical partial sectional view thereof. A spool shaft 12 is rotatably supported inside the cylindrical body 11 of the cartridge 10, and a film (not shown) is wound around the spool shaft 12. The upper end of the spool shaft 12 projects upward from the hole 11a on the upper surface of the tubular body 11, and a gap is provided between the peripheral surface of the spool shaft 12 and the inner surface of the hole 11a. The spool shaft 12 can be moved in the direction orthogonal to the shaft, that is, in the radial direction by the amount of this gap. Further, a cylindrical recess 12a is formed on the upper end surface of the spool shaft 12, a tapered recess 12c having a tapered surface TP is formed on the bottom surface 12b of the recess 12a, and a hole 12d is formed at the tip thereof. Has been formed. Further, in the cylindrical recess 12a, two engaging projections 12e that can be engaged with a driving member 35 (FIG. 1) of the camera described later are formed. Here, the recesses 12a and 12c, the hole 12d
The centers of are in agreement.

【0009】互いに直交する面X1,Y1(図5)はカ
−トリッジ10の平面に対する基準面であり、この基準
面に対するスプール軸12の理想的な中心はO1である
が、スプール軸12の実際の中心O1’は、理想的中心
O1から半径α以内のいずれかの位置にずれる可能性が
ある。これは、筒体11の製造誤差やスプール軸12が
その径方向に移動可能な構成に起因するものである。図
5では、実際の中心O1’が理想的中心O1から図示左
下にαだけずれた例を示している。なおα以上ずれるこ
とはない。
The mutually orthogonal planes X1 and Y1 (FIG. 5) are reference planes with respect to the plane of the cartridge 10, and the ideal center of the spool shaft 12 with respect to this reference plane is O1. The center O1 ′ of R1 may shift to any position within the radius α from the ideal center O1. This is due to the manufacturing error of the cylindrical body 11 and the configuration in which the spool shaft 12 is movable in the radial direction. FIG. 5 shows an example in which the actual center O1 ′ deviates from the ideal center O1 to the lower left in the figure by α. It does not deviate by more than α.

【0010】図1は本発明に係るカメラのカ−トリッジ
駆動機構の縦方向断面図、図2はそのII−II線断面図で
ある。31はカメラ本体内に固着された基板であり、こ
の基板31に設けられた孔部31aには支持軸32の軸
本体32cが貫通され、その上端のつば部32aが基板
31の上面に掛止される。基板31の上面にはまた、つ
ば部32aを覆うようにカバ−33がビス34により螺
着されている。つば部32aとカバ−33の内周面との
間には隙間が設けられるとともに、軸本体32cと後述
する軸受部材37との間にも隙間が設けられており、支
持軸32は、軸本体32cと軸受部材37との隙間の分
だけ径方向に移動可能とされる。また軸本体32cは駆
動部材35の中心位置を摺動可能に貫通しており、その
先端32bは球状とされる。
FIG. 1 is a longitudinal sectional view of a cartridge drive mechanism of a camera according to the present invention, and FIG. 2 is a sectional view taken along line II-II thereof. Reference numeral 31 denotes a substrate fixed in the camera body, and a shaft body 32c of the support shaft 32 penetrates through a hole 31a provided in the substrate 31, and a flange portion 32a at the upper end of the substrate 31 is hooked on the upper surface of the substrate 31. To be done. A cover 33 is screwed onto the upper surface of the substrate 31 with screws 34 so as to cover the collar portion 32a. A gap is provided between the flange portion 32a and the inner peripheral surface of the cover 33, and a gap is also provided between the shaft body 32c and a bearing member 37 described later. It can be moved in the radial direction by the amount of the gap between 32c and the bearing member 37. The shaft body 32c slidably passes through the central position of the drive member 35, and the tip 32b thereof has a spherical shape.

【0011】駆動部材35は、係合部35aと、この係
合部35aの周面上部に形成されたつば部35bとから
成り、上記支持軸32に沿って軸方向に摺動可能とされ
るが、径方向へは支持軸32と一体に移動可能とされ
る。係合部35aはカメラ本体を構成する支持部材36
の孔部36aに挿通され、その周面下部には、図3に示
すように、上記カ−トリッジ10のスプール軸12の係
合用突起部12eと係合される切欠き35Aが2ヵ所に
形成されている。またつば部35bは、支持部材36の
上面に支持され、その周面には、図2に示すように、後
述する動力伝達部材38の突出部38bと係合可能な切
欠き35Bが2ヵ所に形成されている。
The driving member 35 is composed of an engaging portion 35a and a flange portion 35b formed on an upper portion of the peripheral surface of the engaging portion 35a, and is slidable in the axial direction along the support shaft 32. However, it can be moved integrally with the support shaft 32 in the radial direction. The engaging portion 35a is a support member 36 that constitutes the camera body.
As shown in FIG. 3, two notches 35A are formed in the lower part of the peripheral surface of the spool 36 for engaging with the engaging projections 12e of the spool shaft 12 of the cartridge 10. Has been done. Further, the flange portion 35b is supported on the upper surface of the support member 36, and on its peripheral surface, as shown in FIG. 2, there are two notches 35B engageable with the protrusion portion 38b of the power transmission member 38 described later. Has been formed.

【0012】また上記基板31の下面には、孔部31a
の周縁に軸受部材37が固着され、この軸受部材37に
動力伝達部材38が回転可能に支持されている。動力伝
達部材38は、周面にギアが形成されたギア部38a
と、その下部に一体に設けられた一対の突出部38bと
から成り、ギア部38aには不図示のモータの駆動力が
歯車列を介して伝達される。一対の突出部38bの先端
は、上述した駆動部材35の切欠き35Bに挿入され、
これにより動力伝達部材38が回転すると、一対の突出
部38bを介して駆動部材35が回転する。
On the lower surface of the substrate 31, a hole 31a is formed.
A bearing member 37 is fixed to the periphery of the bearing member 37, and a power transmission member 38 is rotatably supported by the bearing member 37. The power transmission member 38 has a gear portion 38a having a gear formed on its peripheral surface.
And a pair of protrusions 38b integrally provided on the lower part thereof, the driving force of a motor (not shown) is transmitted to the gear 38a via a gear train. The tips of the pair of protrusions 38b are inserted into the notches 35B of the drive member 35 described above,
Accordingly, when the power transmission member 38 rotates, the drive member 35 rotates via the pair of protrusions 38b.

【0013】さらに、動力伝達部材38のギア部38a
下面と、駆動部材35の上面との間には、円錐コイルば
ね39が介装されている。この円錐コイルばね39は、
ギア部38a下面に掛止される一端側の径(最大径)が
上記駆動部材35の係合部35aの径と略等しく、また
駆動部材35の上面に掛止される他端側の径(最小径)
が駆動部材35上面の突出部と略等しくされる。この円
錐コイルばね39には次の2つの作用がある。 (1) 駆動部材35を常に軸方向に図示下方に付勢す
る。 (2) 正規の円錐形状を保持しようとする力により、
駆動部材35を径方向に付勢し、支持軸32、すなわち
駆動部材35を上記動力伝達部材38に対して芯出しす
る。
Further, the gear portion 38a of the power transmission member 38
A conical coil spring 39 is interposed between the lower surface and the upper surface of the drive member 35. This conical coil spring 39
The diameter (maximum diameter) on one end side hooked to the lower surface of the gear portion 38a is substantially equal to the diameter of the engaging portion 35a of the drive member 35, and the diameter on the other end side hooked to the upper surface of the drive member 35 ( Minimum diameter)
Are substantially equal to the protrusions on the upper surface of the drive member 35. The conical coil spring 39 has the following two actions. (1) The driving member 35 is constantly urged downward in the drawing in the axial direction. (2) By the force to keep the regular conical shape,
The drive member 35 is urged in the radial direction to center the support shaft 32, that is, the drive member 35 with respect to the power transmission member 38.

【0014】ここで、図3の面X2,Y2は、カ−トリ
ッジ10の装填時に上記基準面X1,Y1(図5)がそ
れぞれ重り合うカメラ側の面であり、この面X2,Y2
に対する駆動部材35の理想的な中心をO2とすると、
駆動部材35の実際の中心O2’(円錐コイルばね39
により芯出しされる)は、上記軸受部材37の製造誤差
に起因する位置ずれにより理想的中心O2から半径γ以
内のいずれかの位置にずれる可能性がある。図3では、
実際の中心O2’が理想的中心O2から図示左下にγだ
けずれた例を示している。なおγ以上ずれることはな
い。
Surfaces X2 and Y2 in FIG. 3 are surfaces on the camera side on which the reference surfaces X1 and Y1 (FIG. 5) overlap each other when the cartridge 10 is loaded.
Let O2 be the ideal center of the drive member 35 with respect to
The actual center O2 ′ of the drive member 35 (conical coil spring 39
Centered by) may shift to any position within a radius γ from the ideal center O2 due to a positional deviation due to a manufacturing error of the bearing member 37. In Figure 3,
An example is shown in which the actual center O2 ′ deviates from the ideal center O2 by γ to the lower left of the figure. It does not deviate by more than γ.

【0015】次に、スプール軸12と駆動部材35の径
方向への移動量について説明する。図4は各中心位置と
ずれ量との関係を示す図であり、O1,O2は上述した
ようにカ−トリッジスプール軸12および駆動部材35
の理想中心であり、カ−トリッジ10をカメラに装填し
た場合には理想中心O1,O2は重なることになる。し
かし実際には、各中心O1’,O2’は最大でぞれぞれ
α,γだけ理想中心O1,O2からずれることになるの
で、O1’,O2’間の最大ずれ量はα+γとなる。
Next, the amount of radial movement of the spool shaft 12 and the drive member 35 will be described. FIG. 4 is a diagram showing the relationship between each center position and the amount of deviation, and O1 and O2 are the cartridge spool shaft 12 and the drive member 35 as described above.
When the cartridge 10 is mounted on the camera, the ideal centers O1 and O2 will overlap. However, in reality, the centers O1 ′ and O2 ′ are displaced from the ideal centers O1 and O2 by α and γ, respectively, so that the maximum displacement amount between O1 ′ and O2 ′ is α + γ.

【0016】ところで、上述したようにスプール軸12
は、図6に示した孔部11aとの隙間の分だけ径方向に
移動可能な構成となっているから、当初のO1,O1’
間のずれ量がαであっても、中心O1’は、理想中心O
1に向けて所定量だけ移動可能である。しかし、カ−ト
リッジ10の製造誤差により、理想中心O1からβ(α
>β)だけ離れた位置(O1”で示す)までしか移動で
きないようになっている。したがって、スプール軸12
の移動後の中心O1”と駆動部材35の実際の中心O
2’とのずれ量は、最大でβ+γとなる。
By the way, as described above, the spool shaft 12
Has a structure in which it can be moved in the radial direction by the amount of the gap with the hole 11a shown in FIG.
Even if the gap amount is α, the center O1 ′ is the ideal center O
It is possible to move toward 1 by a predetermined amount. However, due to the manufacturing error of the cartridge 10, the ideal center O1 is separated by β (α
It is configured so that it can only move to a position (indicated by O1 ") which is separated by> β).
Of the driving member 35 and the center O1 ″ of the driving member 35 after the movement of
The maximum amount of deviation from 2'is β + γ.

【0017】そこで、駆動部材35の径方向への移動量
δ(図1)を δ≧β+γ とすれば駆動部材35をスプール軸12に対して芯出し
可能である。なお図4中のO2”は、δ=β+γとした
場合に駆動部材35の中心が取り得る最もO1’から離
れた位置(軸部32cが軸部材37の図示右側の内面と
当接した場合)を示す。
Therefore, if the amount of radial movement δ (FIG. 1) of the drive member 35 is δ ≧ β + γ, the drive member 35 can be centered with respect to the spool shaft 12. Note that O2 ″ in FIG. 4 is the position farthest from the O1 ′ that can be taken by the center of the drive member 35 when δ = β + γ (when the shaft portion 32c contacts the inner surface of the shaft member 37 on the right side in the drawing). Indicates.

【0018】また、スプール軸12が移動する前の中心
O1’と駆動部材35の実際の中心O2’とのずれ量の
最大値がα+γとなることから、スプール軸12のテー
パ面TPの径方向の長さd(図6)をα+γ以上とすれ
ば、動力伝達部材38に対して芯出しされている駆動部
材35に対して芯ずれしたカ−トリッジ10を装填した
ときに、支持軸32の先端部32bが必ずテーパ面TP
に当接することになる。そこで本実施例では、上記dを
α+γ以上としている。
Further, since the maximum value of the amount of deviation between the center O1 'before the spool shaft 12 moves and the actual center O2' of the drive member 35 is α + γ, the taper surface TP of the spool shaft 12 in the radial direction. If the length d (FIG. 6) of .alpha. Is .gamma. +. Gamma. Or more, the support shaft 32 of the support shaft 32 is loaded when the cartridge 10 is centered with respect to the drive member 35 which is centered with respect to the power transmission member 38. The tip 32b is always a tapered surface TP
Will come into contact with. Therefore, in the present embodiment, the above d is set to α + γ or more.

【0019】次に、図7〜図9も参照してカ−トリッジ
10装填時の動作を説明する。ここで、以下の説明で
は、カ−トリッジ10のスプール軸12の中心と駆動部
材35の中心とがα+γ(最大ずれ量)だけずれている
ものとする。カ−トリッジ10を上記ドロップインロー
ド方式によりカメラ本体の底部の孔からカ−トリッジ室
に挿入し、カ−トリッジ蓋を閉じてゆくと、カ−トリッ
ジ蓋によりカ−トリッジ10が上方に押圧され、図7に
示すようにスプール軸12の上端面が駆動部材35の下
面と当接するとともに、支持軸32の先端32bがスプ
ール軸12のテーパ状凹部12cのテーパ面TPに当接
する。この状態でカ−トリッジ10が更に上方に押圧さ
れると、駆動部材35は、円錐コイルばね39の軸方向
への付勢力に抗して支持軸32を摺動しつつ上方に移動
する。その際、スプール軸12は、テーパ面TPが支持
軸32の先端部32bに押されて図示A方向に移動し、
筒体11の孔部11a壁面に当接してその移動が停止す
る。このときのスプール軸12の移動量はα−β(図
4)であり、この時点ではスプール軸12の中心と駆動
部材35の中心とがβ+γだけずれていることになる。
Next, the operation when the cartridge 10 is loaded will be described with reference to FIGS. Here, in the following description, it is assumed that the center of the spool shaft 12 of the cartridge 10 and the center of the driving member 35 are displaced by α + γ (maximum displacement amount). When the cartridge 10 is inserted into the cartridge chamber through the hole at the bottom of the camera body by the drop-in load method and the cartridge lid is closed, the cartridge lid is pressed upward. As shown in FIG. 7, the upper end surface of the spool shaft 12 contacts the lower surface of the drive member 35, and the tip 32b of the support shaft 32 contacts the tapered surface TP of the tapered recess 12c of the spool shaft 12. When the cartridge 10 is pushed further upward in this state, the drive member 35 moves upward while sliding on the support shaft 32 against the axial biasing force of the conical coil spring 39. At that time, the taper surface TP of the spool shaft 12 is pushed by the tip end portion 32b of the support shaft 32 to move in the direction A in the drawing,
The movement is stopped by contacting the wall surface of the hole 11a of the cylindrical body 11. The amount of movement of the spool shaft 12 at this time is α−β (FIG. 4), and at this time point, the center of the spool shaft 12 and the center of the drive member 35 are displaced by β + γ.

【0020】この状態でカ−トリッジ10が更に上方に
押し上げられると、支持軸32の先端部32bがスプー
ル軸12のテーパ面TPに押されることにより、支持軸
32が円錐コイルばね39の調芯作用に抗して図示B方
向に移動し、カートリッジ蓋が完全に閉じられたときに
は、図8に示すように支持軸32が軸受部材37の内周
面に当接して移動が停止する。このときの支持軸32の
移動量はβ+γであり、この時点で駆動部材35がスプ
ール軸12に対して芯出しされた状態となり、したがっ
て支持軸32の先端部32bはスプール軸12の孔部1
2dに落ち込む。ただし、図ではスプール軸12の係合
用突起部12eと駆動部材35の係合部35aに形成さ
れた切欠き35Aとの位相がずれているので、両者の係
合は行われない。
When the cartridge 10 is pushed up further in this state, the tip 32b of the support shaft 32 is pushed by the taper surface TP of the spool shaft 12, so that the support shaft 32 is aligned with the conical coil spring 39. When the cartridge lid is completely closed by moving against the action and the cartridge lid is completely closed, the support shaft 32 comes into contact with the inner peripheral surface of the bearing member 37 to stop the movement as shown in FIG. The amount of movement of the support shaft 32 at this time is β + γ, and at this point the drive member 35 is in a state of being centered with respect to the spool shaft 12, and therefore the tip end portion 32b of the support shaft 32 is in the hole portion 1 of the spool shaft 12.
Fall into 2d. However, in the figure, since the engagement projection 12e of the spool shaft 12 and the notch 35A formed in the engagement portion 35a of the drive member 35 are out of phase with each other, they are not engaged with each other.

【0021】その後、不図示のモータが駆動されると、
その駆動力により歯車列を介して動力伝達部材38が回
転し、その突出部38bによりつば部35bを介して駆
動部材35が回転される。そして、係合部35aの切欠
き35Aがスプール軸12の係合用突起部12eと一致
する位置まで回転すると、ばね39の軸方向の付勢力に
より駆動部材35が下降して図9に示すように係合部3
5aの切欠き35Aがスプール軸12の係合用突起部1
2eと係合する。この係合により、以降は駆動部材35
の回転に伴ってスプール軸12が回転されることにな
る。このスプール軸12の回転によりフィルムがカ−ト
リッジ10から送出され、不図示のカメラの巻上スプー
ルに巻き付けられてフィルムローディングが行われる。
After that, when a motor (not shown) is driven,
The driving force causes the power transmission member 38 to rotate via the gear train, and the protruding portion 38b causes the driving member 35 to rotate via the collar portion 35b. Then, when the notch 35A of the engaging portion 35a rotates to a position where it coincides with the engaging projection 12e of the spool shaft 12, the driving member 35 descends due to the axial biasing force of the spring 39, as shown in FIG. Engagement part 3
The notch 35A of 5a is the engaging projection 1 of the spool shaft 12.
Engage with 2e. Due to this engagement, the driving member 35 will be used thereafter.
The spool shaft 12 is rotated in accordance with the rotation. The rotation of the spool shaft 12 causes the film to be delivered from the cartridge 10 and wound around a winding spool of a camera (not shown) to perform film loading.

【0022】ここで図9では、駆動部材35の中心と動
力伝達部材38の中心とが一致しておらず、支持軸32
の軸本体32cが軸受部材37と接触し、またスプール
軸12が筒体11の孔部11aの壁面と接触しているの
で、スプール軸12への動力伝達効率は低下するが、フ
ィルム給送は確実に行える。
Here, in FIG. 9, the center of the drive member 35 and the center of the power transmission member 38 do not coincide with each other, and the support shaft 32
Since the shaft main body 32c contacts the bearing member 37 and the spool shaft 12 contacts the wall surface of the hole 11a of the tubular body 11, the power transmission efficiency to the spool shaft 12 is reduced, but the film is not fed. It can be done reliably.

【0023】なお極めてまれなことではあるが、カ−ト
リッジ装填当初から上記係合用突起部12eと切欠き3
5Aとの位相が一致していた場合には、上記芯出しが行
われた時点で両者は係合し、その後、駆動部材35はス
プール軸12の凹部12aの底面12bにより上方に押
し上げられてゆくことになる。またスプール軸12の中
心位置と駆動部材35の中心位置とのずれ量がスプール
軸12の移動可能な量以下のときには、円錐コイルばね
39の調芯作用によりスプール軸12のみが径方向にに
移動し、駆動部材35の径方向への移動は行われない。
この状態が図10に示される。この場合には駆動部材3
5の中心と動力伝達部材38の中心とが一致しており、
支持軸32の軸本体32cおよびスプール軸12が軸受
部材37,孔部11aの壁面とそれぞれ接触していない
ので、スプール軸12への動力伝達効率がよくなる。
Although it is extremely rare, the engaging projection 12e and the notch 3 are formed from the beginning of cartridge loading.
If the phase is the same as that of 5A, they are engaged with each other when the centering is performed, and then the driving member 35 is pushed upward by the bottom surface 12b of the recess 12a of the spool shaft 12. It will be. Further, when the deviation amount between the center position of the spool shaft 12 and the center position of the drive member 35 is equal to or smaller than the movable amount of the spool shaft 12, only the spool shaft 12 moves in the radial direction by the centering action of the conical coil spring 39. However, the drive member 35 is not moved in the radial direction.
This state is shown in FIG. In this case, the drive member 3
The center of 5 and the center of the power transmission member 38 are aligned,
Since the shaft body 32c of the support shaft 32 and the spool shaft 12 are not in contact with the bearing member 37 and the wall surface of the hole 11a, the efficiency of power transmission to the spool shaft 12 is improved.

【0024】さらに、スプール軸12の中心と駆動部材
35の中心とが当初から一致していた場合(芯ずれがな
い場合)には、既に両者が係合可能な状態(ただし、位
相が合っていれば)となっているので、装填時にスプー
ル軸12および駆動部材35は共に径方向に移動しな
い。
Furthermore, when the center of the spool shaft 12 and the center of the drive member 35 are initially aligned (when there is no misalignment), both can be engaged (however, the phases are in phase). Therefore, both the spool shaft 12 and the drive member 35 do not move in the radial direction during loading.

【0025】また、カ−トリッジ10をカメラから取り
出すにあたってカ−トリッジ10を図示下方に移動させ
ると、スプール軸12の下降に伴って駆動部材35は、
円錐コイルばね39による軸方向の付勢力により支持軸
32を摺動つつ下降するとともに、ばね39による径方
向への付勢力により支持軸32と駆動部材35が移動し
てこれらの中心が動力伝達部材38の中心と一致し、そ
の結果、図1に示した状態に戻る。
Further, when the cartridge 10 is moved downward in the drawing when the cartridge 10 is taken out from the camera, the drive member 35 moves as the spool shaft 12 descends.
The support shaft 32 is slid down by the axial biasing force of the conical coil spring 39, and the support shaft 32 and the drive member 35 are moved by the radial biasing force of the spring 39 so that their centers are the power transmitting members. It coincides with the center of 38 and, as a result, returns to the state shown in FIG.

【0026】以上の実施例の構成において、円錐コイル
ばね39が付勢手段を、支持軸32が軸部材をそれぞれ
構成する。
In the construction of the above embodiment, the conical coil spring 39 constitutes the biasing means and the support shaft 32 constitutes the shaft member.

【0027】なお付勢手段は、駆動部材35の回転中心
が動力伝達部材38の回転中心と略一致するように駆動
部材35を径方向に付勢するものであれば、上記円錐コ
イルばね39に限定されない。またカ−トリッジ10の
スプール軸12が筒体11に対して径方向に移動可能な
例を示したが、このスプール軸は径方向に移動不能で駆
動部材35のみが径方向に移動可能であってもよい。さ
らに駆動部材35やスプール軸の係合部の形状や動力伝
達部材の構成なども実施例に限定されない。
If the urging means urges the drive member 35 in the radial direction so that the rotation center of the drive member 35 substantially coincides with the rotation center of the power transmission member 38, the conical coil spring 39 will be used. Not limited. Further, although an example in which the spool shaft 12 of the cartridge 10 is movable in the radial direction with respect to the cylindrical body 11 is shown, this spool shaft is not movable in the radial direction and only the drive member 35 is movable in the radial direction. May be. Further, the shapes of the driving member 35 and the engaging portion of the spool shaft, the configuration of the power transmission member, and the like are not limited to those in the embodiment.

【0028】[0028]

【発明の効果】本発明によれば、付勢手段により駆動部
材の回転中心が動力伝達部材の回転中心と略一致するよ
うに駆動部材を径方向に付勢し、このときカ−トリッジ
が装填されると、そのスプール軸が軸部材に当接し、ス
プール軸により上記付勢に抗して駆動部材を径方向へ移
動してスプール軸に対して芯出しするようにしたので、
上述のドロップイン方式によりカ−トリッジをカメラに
装填する際、カメラの駆動部材とスプール軸との中心が
ある程度ずれていても駆動部材がスプール軸に対して芯
出しされ、両者が係合可能な状態となり、確実にフィル
ム給送が可能となる。
According to the present invention, the drive member is biased in the radial direction by the biasing means so that the center of rotation of the drive member substantially coincides with the center of rotation of the power transmission member, and at this time, the cartridge is loaded. Then, the spool shaft comes into contact with the shaft member, and the spool shaft moves the drive member in the radial direction against the above-mentioned bias to center the spool shaft.
When the cartridge is loaded into the camera by the drop-in method described above, the drive member is centered with respect to the spool shaft even if the center of the drive member of the camera and the spool shaft are deviated to some extent, and both can be engaged. Then, the film can be reliably fed.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係るカ−トリッジ駆動機構の一実施例
を示す断面図である。
FIG. 1 is a sectional view showing an embodiment of a cartridge drive mechanism according to the present invention.

【図2】図1のII−II線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.

【図3】駆動部材の断面図である。FIG. 3 is a sectional view of a driving member.

【図4】各中心位置のずれ量を説明する図である。FIG. 4 is a diagram illustrating a shift amount of each center position.

【図5】フィルムカ−トリッジの平面図である。FIG. 5 is a plan view of a film cartridge.

【図6】上記フィルムカ−トリッジの部分断面図であ
る。
FIG. 6 is a partial sectional view of the film cartridge.

【図7】カ−トリッジ装填当初の状態を示す断面図であ
る。
FIG. 7 is a cross-sectional view showing a state in which the cartridge is initially loaded.

【図8】駆動部材とスプール軸との中心が一致した状態
を示す断面図である。
FIG. 8 is a cross-sectional view showing a state in which the centers of the drive member and the spool shaft are aligned with each other.

【図9】スプール軸が駆動部材に係合した状態を示す断
面図である。
FIG. 9 is a cross-sectional view showing a state where the spool shaft is engaged with the drive member.

【図10】スプール軸の芯ずれ量が小さいカ−トリッジ
を装填した場合を示す断面図である。
FIG. 10 is a cross-sectional view showing a case in which a cartridge with a small misalignment of the spool shaft is loaded.

【符号の説明】[Explanation of symbols]

10 カ−トリッジ 11 筒体 12 スプール軸 12a 円柱状凹部 12c テーパ状凹部 12d 孔部 12e 係合用突起部 32 支持軸 35 駆動部材 35A,35B 切欠き 35a 係合部 37 軸受部材 38 動力伝達部材 39 円錐コイルばね TP テーパ面 10 Cartridge 11 Cylindrical Body 12 Spool Shaft 12a Cylindrical Recess 12c Tapered Recess 12d Hole 12e Engagement Projection 32 Support Shaft 35 Drive Member 35A, 35B Notch 35a Engagement Part 37 Bearing Member 38 Power Transmission Member 39 Cone Coil spring TP Tapered surface

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 装填されたカ−トリッジのスプール軸と
係合可能な駆動部材と、 該駆動部材にモータの駆動力を伝達する動力伝達部材と
を備え、 前記駆動部材の回転により前記スプール軸を回転させて
フィルムをカ−トリッジから送出するカメラのカ−トリ
ッジ駆動機構において、 前記駆動部材は、前記動力伝達部材に対して径方向に所
定量だけ移動可能とされるとともに、 前記駆動部材の回転中心が前記動力伝達部材の回転中心
と略一致するように駆動部材を径方向に付勢する付勢手
段と、 装填されるカ−トリッジのスプール軸と当接し、前記付
勢に抗して前記駆動部材を径方向へ移動し、駆動部材が
スプール軸に対して芯出しされた状態を得る軸部材とを
具備することを特徴とするカメラのカ−トリッジ駆動機
構。
1. A drive member engageable with a spool shaft of a loaded cartridge, and a power transmission member for transmitting a driving force of a motor to the drive member, the spool shaft being rotated by the rotation of the drive member. In a cartridge drive mechanism of a camera for rotating a film to deliver the film from the cartridge, the drive member is movable in a radial direction with respect to the power transmission member by a predetermined amount, and An urging means for urging the drive member in the radial direction so that the center of rotation substantially coincides with the center of rotation of the power transmission member and the spool shaft of the cartridge to be loaded are brought into contact with each other to resist the urging. A cartridge drive mechanism for a camera, comprising: a shaft member that moves the drive member in a radial direction so that the drive member is centered with respect to a spool shaft.
【請求項2】 前記付勢手段は円錐コイルばねであるこ
とを特徴とする請求項1に記載のカメラのカ−トリッジ
駆動機構。
2. A cartridge drive mechanism for a camera according to claim 1, wherein said biasing means is a conical coil spring.
JP3296361A 1991-08-02 1991-10-15 Cartridge driving mechanism for camera Pending JPH05107636A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP3296361A JPH05107636A (en) 1991-10-15 1991-10-15 Cartridge driving mechanism for camera
US07/920,883 US5347332A (en) 1991-08-02 1992-07-28 Film cartridge driving mechanism of a camera

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3296361A JPH05107636A (en) 1991-10-15 1991-10-15 Cartridge driving mechanism for camera

Publications (1)

Publication Number Publication Date
JPH05107636A true JPH05107636A (en) 1993-04-30

Family

ID=17832560

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3296361A Pending JPH05107636A (en) 1991-08-02 1991-10-15 Cartridge driving mechanism for camera

Country Status (1)

Country Link
JP (1) JPH05107636A (en)

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