JPH09296854A - Gear drive device - Google Patents

Gear drive device

Info

Publication number
JPH09296854A
JPH09296854A JP11248396A JP11248396A JPH09296854A JP H09296854 A JPH09296854 A JP H09296854A JP 11248396 A JP11248396 A JP 11248396A JP 11248396 A JP11248396 A JP 11248396A JP H09296854 A JPH09296854 A JP H09296854A
Authority
JP
Japan
Prior art keywords
worm gear
motor
bend
metal fitting
gear
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
JP11248396A
Other languages
Japanese (ja)
Inventor
Shuji Nakame
修司 中目
Hiroki Kobayashi
浩樹 小林
Yoshitaka Nakamura
義隆 中村
Hirokazu Takase
宏和 高瀬
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP11248396A priority Critical patent/JPH09296854A/en
Publication of JPH09296854A publication Critical patent/JPH09296854A/en
Pending legal-status Critical Current

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  • Gear Transmission (AREA)
  • Transmission Devices (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To ensure normal operation return at the restarting of a motor by installing a bend so as to be opposed to the tip part of a worm gear, attaching a fitting formed with a projection in the bend, to the motor, and making this motor so as to receive any force to be added to the worm gear in time of locking a driven mechanism. SOLUTION: A fitting 7 with a bend 7C is attached to the sidepiece of a motor 1 with a screw 5. This fitting 7 is made up of a mounting part 7A, a connecting part 7B and the bend 7C in parallel with the mounting part 7A. A projection 7D bent in direction of the mounting part 7A is integrally installed in the bend 7C. In succession, a pivot 3A of the worm gear 3 fitted in and locked to a turning shaft 2 is opposed to the bend 7C of the fitting 7, and then the projection 7D is made so as to be opposed to the opposite side of the engaged part of a worm wheel 6 in a cylindrical part 3B. Any thrust and radial force to be added to the worm gear 3 at a time when a driven mechanism is locked and the worm wheel 6 is stopped is regulated by the bend 7C and the projection 7D, and thereby any movement in each direction is checked, so that restarting is secured.

Description

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

【0001】[0001]

【発明の属する技術分野】本発明は、カセットデッキな
どに使用する歯車駆動装置、特にモータの回転駆動力を
ウォームギヤ、ウォームホイールを介して被駆動機構に
伝達する歯車駆動装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gear driving device used for a cassette deck or the like, and more particularly to a gear driving device for transmitting a rotational driving force of a motor to a driven mechanism via a worm gear and a worm wheel.

【0002】[0002]

【従来の技術】図7、図8は従来のカセットデッキに使
用する歯車駆動装置の要部を示している。図7、図8に
おいて、1はモータ、2はモータ1の回転軸であり、こ
の回転軸2にはウォームギヤ3が嵌合して固定されてい
る。3Aはウォームギヤ3の端面の中央に一体に形成さ
れたピボットである。4はモータ1の側面にビス5で取
付けられた金具であり、この金具4はほぼコ字状に加工
され、モータ1への取付部4Aに対向する折曲部4Bは
ウォームギヤ3のピボット3Aの近傍に配置されてい
る。6はウォームギヤ3に歯合するウォームホイールで
ある。
2. Description of the Related Art FIGS. 7 and 8 show the main parts of a gear drive device used in a conventional cassette deck. In FIGS. 7 and 8, 1 is a motor, 2 is a rotating shaft of the motor 1, and a worm gear 3 is fitted and fixed to the rotating shaft 2. 3A is a pivot integrally formed in the center of the end surface of the worm gear 3. Reference numeral 4 denotes a metal fitting attached to the side surface of the motor 1 with a screw 5, the metal fitting 4 is processed into a substantially U-shape, and a bent portion 4B facing the mounting portion 4A to the motor 1 has a pivot 3A of the worm gear 3. It is located in the vicinity. A worm wheel 6 meshes with the worm gear 3.

【0003】図7、図8において、モータ1の回転軸2
が回転すると、ウォームギヤ3が回転し、このウォーム
ギヤ3に歯合するウォームホイール6が回転する。この
ウォームホイール6には図示しない他の歯車機構が噛み
合っており、ウォームホイール6の回転駆動力が他の歯
車に伝達され、カセットのローディングやヘッド基板の
駆動等の駆動に使用される。
In FIGS. 7 and 8, the rotary shaft 2 of the motor 1
When the worm rotates, the worm gear 3 rotates, and the worm wheel 6 meshing with the worm gear 3 rotates. Another gear mechanism (not shown) meshes with the worm wheel 6, and the rotational driving force of the worm wheel 6 is transmitted to the other gear and used for loading the cassette, driving the head substrate, and the like.

【0004】上記従来の歯車駆動装置において、モータ
1が回転しているにもかかわらず、被駆動機構が、カセ
ットの引っ掛かり等により被駆動機構がロックして歯車
機構が停止した場合、ウォームホイール6が停止するた
め、ウォームギヤ3は、モータ1の回転軸2のスラスト
方向(矢印A方向)の力を受ける。金具4には折曲げ部
4Bが設けられており、ウォームギヤ3がスラスト方向
に力を受けた場合にも、ウォームギヤ3のスラスト方向
の移動を金具4の折曲部4Bで規制しているため、被駆
動機構のロック状態が解除されモータ1が再起動した際
に動作を復帰するものである。
In the above-described conventional gear drive device, when the driven mechanism is locked due to the cassette being caught or the like and the gear mechanism is stopped even though the motor 1 is rotating, the worm wheel 6 is used. Therefore, the worm gear 3 receives the force of the rotation shaft 2 of the motor 1 in the thrust direction (arrow A direction). The metal fitting 4 is provided with a bent portion 4B, and even when the worm gear 3 receives a force in the thrust direction, the movement of the worm gear 3 in the thrust direction is restricted by the bent portion 4B of the metal fitting 4. The operation is restored when the locked state of the driven mechanism is released and the motor 1 is restarted.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、カセッ
トの引っ掛かり等により被駆動機構がロックして歯車機
構が停止しウォームホイール6が停止した際に、ウォー
ムギヤ3にはスラスト方向だけでなくラジアル方向(図
8の矢印B方向)にも力が作用する場合が発生してい
た。上記従来の歯車駆動装置では、ウォームギヤ3に加
わるスラスト方向の力に対しては、金具4の折曲部4B
で受けるようにしているものの、折曲げ部4Bではラジ
アル方向の力に対しては何等有効に作用することはな
く、ウォームギヤ3がラジアル方向に移動し、回転軸2
あるいはウォームギヤ3の変形等により、モータ1の再
起動時に正常動作に復帰できない場合があった。
However, when the driven mechanism is locked due to the cassette being caught, the gear mechanism is stopped, and the worm wheel 6 is stopped, the worm gear 3 has not only the thrust direction but also the radial direction (see FIG. In some cases, the force also acts in the direction of arrow B of 8). In the above-described conventional gear drive device, the bending portion 4B of the metal fitting 4 with respect to the thrust force applied to the worm gear 3
However, the bending portion 4B does not act effectively against the force in the radial direction, and the worm gear 3 moves in the radial direction and the rotary shaft 2
Alternatively, the worm gear 3 may be deformed or the like, and the motor 1 may not be returned to normal operation when restarted.

【0006】本発明は、上記従来の問題点を解決するも
のであり、被駆動機構のロック状態が解除されモータが
再起動した際に、確実に正常動作に復帰することのでき
る歯車駆動装置を提供するものである。
The present invention solves the above-mentioned conventional problems, and provides a gear drive device capable of reliably returning to normal operation when the locked state of the driven mechanism is released and the motor is restarted. It is provided.

【0007】[0007]

【課題を解決するための手段】本発明は、上記目的を達
成するために、モータに取付ける金具の折曲部に一体に
突起を形成し、被駆動機構のロック時にウォームギヤに
加わるスラスト方向の力を上記金具の折曲部で受け、ま
たウォームギヤに加わるラジアル方向の力を上記突起部
で受けるようにしたものである。
In order to achieve the above object, the present invention forms a projection integrally with a bent portion of a metal fitting to be mounted on a motor, and applies a thrust force to a worm gear when a driven mechanism is locked. Is received by the bent portion of the metal fitting, and the radial force applied to the worm gear is received by the protruding portion.

【0008】以上により、被駆動機構のロック状態が解
除されモータが再起動した際に、確実に正常動作に復帰
することができる。
As described above, when the locked state of the driven mechanism is released and the motor is restarted, the normal operation can be reliably restored.

【0009】[0009]

【発明の実施の形態】本発明の請求校1に記載の発明
は、先端部に円柱部を有しモータの回転軸に嵌合して固
定されたウォームギアと、このウォームギアの先端部に
対向する折曲部を有し上記モータに取付けられた金具
と、上記金具の折曲部の側部に一体に形成され上記ウォ
ームギヤの円柱部の側面に対向する突起と、上記ウォー
ムギヤに歯合するウォームホイールとを備え、上記ウォ
ームギヤの上記ウォームホイールとの歯合箇所の反対側
で上記円柱部と上記突起とを対向させたことを特徴とす
るものであり、モータの回転駆動力により駆動される被
駆動機構のロック時に、ウォームギヤに加わるスラスト
方向の力を金具の折曲部で受け、またウォームギヤに加
わるラジアル方向の力を金具の突起部で受けることがで
きるため、モータの回転軸あるいはウォームギヤの変形
を防止でき、被駆動機構のロック状態が解除されモータ
が再起動した際に、確実に正常動作に復帰することがで
きるという作用を有する。
BEST MODE FOR CARRYING OUT THE INVENTION In the invention described in claim 1 of the present invention, a worm gear having a columnar portion at its tip end and fitted and fixed to a rotary shaft of a motor, and a worm gear facing the tip end portion of this worm gear. A metal fitting having a bent portion attached to the motor, a projection integrally formed on a side portion of the bent portion of the metal fitting and facing a side surface of a cylindrical portion of the worm gear, and a worm wheel meshing with the worm gear. And the columnar portion and the protrusion are opposed to each other on the side opposite to the meshing portion of the worm gear with the worm wheel, and the driven portion driven by the rotational driving force of the motor. When the mechanism is locked, the thrust force applied to the worm gear can be received by the bent part of the metal fitting, and the radial force applied to the worm gear can be received by the protruding part of the metal fitting. Axis or can prevent deformation of the worm gear, with the effect that the motor is unlocked condition of the drive mechanism when restarting, it is possible to reliably reset to normal operation.

【0010】以下、本発明の実施の形態について、図1
〜図6とともに説明する。 (実施の形態1)図1、図2は本発明の実施の形態にお
ける歯車駆動機構の要部の上面図および正面図である。
図1、図2において、1はモータ、2はモータ1の回転
軸であり、この回転軸2にはウォームギヤ3が嵌合して
固定されている。3Aはウォームギヤ3の端面の中央に
一体に形成されたピボットである。3Bはウォームギヤ
3の先端部に形成された円柱部であり、この円柱部3B
の外周面には歯が形成されていないものである。7はモ
ータ1の側面にビス5で取付けられた金具であり、この
金具7は、図3〜図6に示すような形状となっている。
Hereinafter, an embodiment of the present invention will be described with reference to FIG.
~ It demonstrates with FIG. (Embodiment 1) FIGS. 1 and 2 are a top view and a front view of a main part of a gear drive mechanism according to an embodiment of the present invention.
In FIGS. 1 and 2, 1 is a motor, 2 is a rotating shaft of the motor 1, and a worm gear 3 is fitted and fixed to the rotating shaft 2. 3A is a pivot integrally formed in the center of the end surface of the worm gear 3. 3B is a columnar portion formed at the tip of the worm gear 3, and this columnar portion 3B
No teeth are formed on the outer peripheral surface of the. A metal fitting 7 is attached to the side surface of the motor 1 with a screw 5, and the metal fitting 7 has a shape as shown in FIGS.

【0011】図3は金具7の背面図、図4は金具7の側
面図、図5は金具7の上面図、図6は金具7の側面図で
ある。図3〜図6において、7Aはモータ1の端面にビ
ス止めされる取付部であり、この取付部7Aにはビス5
が挿入される孔が形成されている。7Bは連結部であ
り、この連結部7Bはクランク状に折り曲げられてい
る。7Cは連結部7Bの先端を折り曲げてなる折曲部で
あり、この折曲部7Cは取付部7Aと平行に形成され
る。7Dは折曲部7Cの側面に一体に形成された突起で
あり、この突起7Dは取付部7Aの方向に折り曲げられ
て形成される。
FIG. 3 is a rear view of the metal fitting 7, FIG. 4 is a side view of the metal fitting 7, FIG. 5 is a top view of the metal fitting 7, and FIG. 6 is a side view of the metal fitting 7. 3 to 6, reference numeral 7A denotes a mounting portion that is fixed to the end surface of the motor 1 with a screw.
Is formed with a hole into which is inserted. 7B is a connecting part, and this connecting part 7B is bent in a crank shape. Reference numeral 7C is a bent portion formed by bending the tip of the connecting portion 7B, and the bent portion 7C is formed parallel to the mounting portion 7A. 7D is a protrusion integrally formed on the side surface of the bent portion 7C, and the protrusion 7D is formed by being bent in the direction of the mounting portion 7A.

【0012】図1、図2に示すように、金具7の取付部
7Aをモータ1の端面にビス止めした状態では、回転軸
2に嵌合して固定されたウォームギヤ3のピボット3A
は金具7の折曲部7Cに対向し、またウォームギヤ3の
円柱部3Bの内で、ウォームホイール6の歯合部の反対
側には、突起7Dが対向している。
As shown in FIGS. 1 and 2, when the mounting portion 7A of the metal fitting 7 is screwed to the end surface of the motor 1, the pivot 3A of the worm gear 3 fitted and fixed to the rotary shaft 2 is fixed.
Is opposed to the bent portion 7C of the metal fitting 7, and the protrusion 7D is opposed to the opposite side of the toothed portion of the worm wheel 6 in the cylindrical portion 3B of the worm gear 3.

【0013】前記のように構成された本実施の形態にお
いて、モータ1が起動し、モータ1の回転駆動力をウォ
ームギヤ3及びウォームホイール6を介して伝達して他
の歯車機構を駆動している際に、カセットの引っ掛かり
等により被駆動機構がロックして歯車機構が停止しウォ
ームホイール6が停止すると、ウォームギヤ3には、ス
ラスト方向(図1の矢印A方向)とラジアル方向(図2
のB方向)の力を受ける。この際に、ウォームギヤ3の
端面に形成されたピボット3Aが金具7の折曲部7Cに
規制され、ウォームギヤ3の先端部に形成された円柱部
3Bが突起7Dに規制されているため、ウォームギヤ3
はスラスト方及びラジアル方向の力に対しても移動する
ことはなく、回転軸3も不要な変形を受けることもな
い。
In the present embodiment configured as described above, the motor 1 is started and the rotational driving force of the motor 1 is transmitted via the worm gear 3 and the worm wheel 6 to drive the other gear mechanism. At this time, when the driven mechanism is locked due to the cassette being caught, the gear mechanism is stopped, and the worm wheel 6 is stopped, the worm gear 3 has a thrust direction (arrow A direction in FIG. 1) and a radial direction (FIG. 2).
B direction). At this time, the pivot 3A formed on the end surface of the worm gear 3 is restricted by the bent portion 7C of the metal fitting 7, and the columnar portion 3B formed at the tip of the worm gear 3 is restricted by the projection 7D.
Does not move with respect to thrust and radial forces, and the rotary shaft 3 does not undergo unnecessary deformation.

【0014】以上のように、本実施の形態においては、
ウォームギヤ3に加わるスラスト方向の力を金具7の折
曲部7Cで受け、またウォームギヤ3に加わるラジアル
方向の力を金具7の突起7Dで受ける構成のため、被駆
動機構がロックして歯車機構が停止しウォームホイール
6が停止した際にも、モータ1の回転軸2及びウォーム
ギヤ3が移動して変形することがなく、被駆動機構のロ
ックが解除されてモータ1が再起動する際に、歯車機構
を確実に正常動作に復帰できるものである。
As described above, in the present embodiment,
Since the thrust force applied to the worm gear 3 is received by the bent portion 7C of the metal fitting 7, and the radial force applied to the worm gear 3 is received by the protrusion 7D of the metal fitting 7, the driven mechanism is locked and the gear mechanism is Even when the worm wheel 6 is stopped, the rotating shaft 2 of the motor 1 and the worm gear 3 do not move and deform, and when the driven mechanism is unlocked and the motor 1 is restarted, The mechanism can surely return to normal operation.

【0015】[0015]

【発明の効果】以上のように本発明は、モータに取付け
る金具の折曲部に一体に突起を形成し、被駆動機構のロ
ック時にウォームギヤに加わるスラスト方向の力を上記
金具の折曲部で受け、またウォームギヤに加わるラジア
ル方向の力を上記突起部で受けることにより、被駆動機
構のロック状態が解除されモータが再起動した際に、確
実に正常動作に復帰することができるという効果が得ら
れる。
As described above, according to the present invention, a protrusion is formed integrally with the bent portion of the metal fitting to be mounted on the motor, and the thrust force applied to the worm gear when the driven mechanism is locked is generated by the bent portion of the metal fitting. By receiving the radial force applied to the worm gear to the worm gear, it is possible to reliably return to normal operation when the locked state of the driven mechanism is released and the motor is restarted. To be

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

【図1】本発明の一実施の形態における歯車駆動装置の
要部の上面図
FIG. 1 is a top view of a main part of a gear drive according to an embodiment of the present invention.

【図2】同実施の形態の歯車駆動装置の要部の正面図FIG. 2 is a front view of a main part of the gear drive device according to the embodiment.

【図3】同実施の形態に使用する金具の背面図FIG. 3 is a rear view of a metal fitting used in the same embodiment.

【図4】同実施の形態に使用する金具の側面図FIG. 4 is a side view of a metal fitting used in the same embodiment.

【図5】同実施の形態に使用する金具の上面図FIG. 5 is a top view of a metal fitting used in the same embodiment.

【図6】同実施の形態に使用する金具の側面図FIG. 6 is a side view of a metal fitting used in the same embodiment.

【図7】従来の歯車駆動装置の要部の上面図FIG. 7 is a top view of a main part of a conventional gear drive device.

【図8】同従来の歯車駆動装置の要部の正面図FIG. 8 is a front view of a main part of the conventional gear drive device.

【符号の説明】[Explanation of symbols]

1 モータ 2 回転軸 3 ウォームギヤ 6 ウォームホイール 7 金具 7A 取付部 7B 連結部 7C 折曲部 7D 突起 1 Motor 2 Rotating Shaft 3 Worm Gear 6 Worm Wheel 7 Metal Fitting 7A Mounting Part 7B Connecting Part 7C Bending Part 7D Protrusion

───────────────────────────────────────────────────── フロントページの続き (72)発明者 高瀬 宏和 神奈川県横浜市港北区綱島東四丁目3番1 号 松下通信工業株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hirokazu Takase 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Matsushita Communication Industrial Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 先端部に円柱部を有しモータの回転軸に
嵌合して固定されたウォームギアと、このウォームギア
の先端部に対向する折曲部を有し上記モータに取付けら
れた金具と、上記金具の折曲部の側部に一体に形成され
上記ウォームギヤの円柱部の側面に対向する突起と、上
記ウォームギヤに歯合するウォームホイールとを具備
し、上記ウォームギヤの上記ウォームホイールとの歯合
箇所の反対側で上記円柱部と上記突起とを対向させてな
る歯車駆動装置。
1. A worm gear having a cylindrical portion at its tip end and fitted and fixed to a rotating shaft of a motor, and a metal fitting having a bent portion facing the tip end of the worm gear and attached to the motor. A worm wheel that meshes with the worm gear and a protrusion that is integrally formed on the side of the bent portion of the metal fitting and that faces the side surface of the cylindrical portion of the worm gear. A gear drive device in which the columnar portion and the protrusion are opposed to each other on the opposite side of the joint.
JP11248396A 1996-05-07 1996-05-07 Gear drive device Pending JPH09296854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11248396A JPH09296854A (en) 1996-05-07 1996-05-07 Gear drive device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11248396A JPH09296854A (en) 1996-05-07 1996-05-07 Gear drive device

Publications (1)

Publication Number Publication Date
JPH09296854A true JPH09296854A (en) 1997-11-18

Family

ID=14587780

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11248396A Pending JPH09296854A (en) 1996-05-07 1996-05-07 Gear drive device

Country Status (1)

Country Link
JP (1) JPH09296854A (en)

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