JP6464018B2 - Geared motor - Google Patents

Geared motor Download PDF

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JP6464018B2
JP6464018B2 JP2015085461A JP2015085461A JP6464018B2 JP 6464018 B2 JP6464018 B2 JP 6464018B2 JP 2015085461 A JP2015085461 A JP 2015085461A JP 2015085461 A JP2015085461 A JP 2015085461A JP 6464018 B2 JP6464018 B2 JP 6464018B2
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motor
hole
screw insertion
insertion hole
screw
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JP2016208609A (en
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裕太郎 内山
裕太郎 内山
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Nidec Copal Corp
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Description

本発明は、モータをギヤケースに取り付けたギヤドモータに関するものである。   The present invention relates to a geared motor having a motor attached to a gear case.

従来、ギヤドモータは、モータをギヤケースのモータ取り付け部に取り付けた構造を有しており、モータ取り付け部には、モータの出力軸が挿通される軸孔と、モータをモータ取り付け部に固定するためのネジ挿入孔が設けられている。これに対して、モータのケーシングには、その前端面にネジ孔が設けられ、ギヤケースの内側からネジをネジ挿通孔に通し、ネジ挿通孔を通したネジをモータケーシング前端面のネジ孔に螺合することで、ギヤケースのモータ取り付け部にモータを固定している(下記特許文献1参照)。   Conventionally, a geared motor has a structure in which a motor is mounted on a motor mounting portion of a gear case. The motor mounting portion has a shaft hole through which an output shaft of the motor is inserted, and a motor for fixing the motor to the motor mounting portion. A screw insertion hole is provided. On the other hand, the motor casing is provided with a screw hole on the front end surface thereof, the screw is passed through the screw insertion hole from the inside of the gear case, and the screw that has passed through the screw insertion hole is screwed into the screw hole on the motor casing front end surface. By combining, the motor is fixed to the motor mounting portion of the gear case (see Patent Document 1 below).

特開平8−205471号公報JP-A-8-205471

このような従来技術では、一般に、ネジ孔がモータの出力軸に対して軸対称の位置に複数設けてあり、複数のネジでモータ取り付け部にモータを取り付けることで、モータを安定した状態で固定している。しかしながら、モータが取り付けられるギヤケースの形態は様々であり、ネジ挿通孔の位置をモータの出力軸に対して軸対称の位置に設けることができない場合がある。このような場合には、ネジ挿通孔をモータの出力軸に対して偏った位置に設けざるを得ない。しかしながら、そうした場合には、ネジによってモータ取り付け部にモータを固定すると、モータの姿勢に傾きが生じ易くなり、ギヤケース内に軸支されたギヤとモータの出力軸に装着した入力ギヤとの噛み合いが不確かになって、適正な動力伝達ができなかったり、異常な噛み合い音が発生したりするといった不具合が生じる問題があった。   In such a conventional technology, generally, a plurality of screw holes are provided at positions symmetrical with respect to the output shaft of the motor, and the motor is fixed in a stable state by attaching the motor to the motor mounting portion with a plurality of screws. doing. However, the form of the gear case to which the motor is attached is various, and the position of the screw insertion hole may not be provided at an axially symmetric position with respect to the output shaft of the motor. In such a case, the screw insertion hole must be provided at a position biased with respect to the output shaft of the motor. However, in such a case, if the motor is fixed to the motor mounting portion with a screw, the posture of the motor tends to be inclined, and the gear supported in the gear case and the input gear attached to the output shaft of the motor are meshed. There has been a problem in that, due to uncertainty, proper power transmission cannot be performed or abnormal meshing noise is generated.

本発明は、このような問題に対処することを課題の一例とするものである。すなわち、ギヤケースのモータ取り付け部にモータを取り付けるギヤドモータにおいて、ネジ挿通孔を軸対称に設けることができない場合であっても、モータの姿勢が傾斜した状態で固定されるのを抑止し、モータの出力軸に装着される入力ギヤとギヤケース内に軸支されているギヤとの適正な噛み合いを得ること、などが本発明の目的である。 This invention makes it an example of a subject to cope with such a problem. In other words, in a geared motor that attaches a motor to the motor mounting portion of the gear case, even if the screw insertion holes cannot be provided axisymmetrically, the motor is prevented from being fixed in an inclined state, and the motor output It is an object of the present invention to obtain an appropriate meshing between the input gear mounted on the shaft and the gear supported in the gear case.

このような目的を達成するために、本発明によるギヤドモータは、以下の構成を具備するものである。
ギヤケースと、該ギヤケースに取り付けられるモータとを備え、前記ギヤケースは、前記モータをネジ固定するためのモータ取り付け部が設けられ、前記モータ取り付け部は、前記モータの出力軸が挿通される軸孔と、該軸孔の周囲に設けられるネジ挿通孔と、前記モータのネジ孔が設けられる面に当接して、前記軸孔に出力軸を挿通した前記モータの姿勢を保持する突起部とを備え、前記突起部は、前記軸孔の周囲に3箇所以上設けられ、前記突起部を結ぶ直線で囲まれた範囲内に前記ネジ挿通孔が設けられることを特徴とするギヤドモータ。
In order to achieve such an object, a geared motor according to the present invention has the following configuration.
A gear case and a motor attached to the gear case, wherein the gear case is provided with a motor attachment portion for screwing the motor, and the motor attachment portion includes a shaft hole through which the output shaft of the motor is inserted. A screw insertion hole provided around the shaft hole, and a protrusion that abuts a surface on which the screw hole of the motor is provided and holds the attitude of the motor through which the output shaft is inserted into the shaft hole , Three or more protrusions are provided around the shaft hole, and the screw insertion hole is provided in a range surrounded by a straight line connecting the protrusions .

このような特徴を有する本発明のギヤドモータは、ネジ挿通孔を軸対称に設けることができない場合であっても、突起部の当接によって、モータの姿勢が傾斜した状態で固定されるのを抑止することができ、モータの出力軸に装着される入力ギヤとギヤケース内に軸支されているギヤとの適正な噛み合いを得ることができる。   The geared motor of the present invention having such a feature prevents the motor from being fixed in an inclined state by the contact of the protrusion even when the screw insertion hole cannot be provided in an axially symmetrical manner. Therefore, it is possible to obtain an appropriate meshing between the input gear mounted on the output shaft of the motor and the gear supported in the gear case.

本発明の実施形態に係るギヤドモータの説明図(部分断面図)である。It is explanatory drawing (partial sectional drawing) of the geared motor which concerns on embodiment of this invention. 本発明の実施形態に係るギヤドモータにおけるギヤケースの正面図である。It is a front view of the gear case in the geared motor which concerns on embodiment of this invention. 本発明の実施形態に係るギヤドモータの説明図(分解斜視図)である。It is explanatory drawing (disassembled perspective view) of the geared motor which concerns on embodiment of this invention.

以下、図面を参照して本発明の実施形態を説明する。図1〜図3は、本発明の実施形態に係るギヤドモータを示している。ギヤドモータ1は、ギヤケース10と、ギヤケース10に取り付けられるモータ20とを備えている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a geared motor according to an embodiment of the present invention. The geared motor 1 includes a gear case 10 and a motor 20 attached to the gear case 10.

ギヤケース10は、例えば図3に示すように、下ケース10Aと上ケース10Bからなり、その内部に図示省略したギヤトレーンが配備されている。ギヤケース10には、モータ20をネジ固定するためのモータ取り付け部11が設けられている。図示の例では、モータ取り付け部11は、ギヤケース10における下ケース10Aの正面壁外側に設けられている。モータ取り付け部11に取り付けられるモータ20は、入力ギヤ22を備える出力軸21を備えており、そのケーシング23の前端面にネジ孔24が設けられている。 For example, as shown in FIG. 3, the gear case 10 includes a lower case 10 </ b> A and an upper case 10 </ b> B, and a gear train (not shown) is provided therein. The gear case 10 is provided with a motor attachment portion 11 for fixing the motor 20 with screws. In the illustrated example, the motor attachment portion 11 is provided outside the front wall of the lower case 10 </ b> A in the gear case 10. The motor 20 attached to the motor attachment portion 11 includes an output shaft 21 including an input gear 22, and a screw hole 24 is provided on the front end surface of the casing 23.

モータ取り付け部11は、モータ20の出力軸21が挿通される軸孔11Aと、軸孔11Aの周囲に設けられるネジ挿通孔11Bを備えている。ネジ挿通孔11Bは、軸孔11Aの周りに軸対称で設けられておらず、図示の例では軸孔11Aの上側に偏って配置されている。 The motor mounting portion 11 includes a shaft hole 11A through which the output shaft 21 of the motor 20 is inserted, and a screw insertion hole 11B provided around the shaft hole 11A. The screw insertion hole 11B is not provided symmetrically around the shaft hole 11A, and in the illustrated example, the screw insertion hole 11B is biased to the upper side of the shaft hole 11A.

ギヤケース10が下ケース10Aと上ケース10Bに分割可能な場合には、ネジ挿通孔11Bを軸孔11Aの上側に設けることでネジを通しやすくなるが、その逆に、軸孔11Aの下側にネジ挿通孔11Bを設けるとネジ止めの作業をするのが困難になる。このため、図示の例では、軸孔11Aの上側のみにネジ挿通孔11Bを設けており、モータ20がギヤケース10に固定された状態では、ネジ13が出力軸21の周りに軸対称に設けられていない。 When the gear case 10 can be divided into the lower case 10A and the upper case 10B, the screw insertion hole 11B is provided on the upper side of the shaft hole 11A, so that it is easier to pass the screw, but conversely, on the lower side of the shaft hole 11A. When the screw insertion hole 11B is provided, it is difficult to perform the screwing operation. For this reason, in the illustrated example, the screw insertion hole 11B is provided only on the upper side of the shaft hole 11A, and in a state where the motor 20 is fixed to the gear case 10, the screw 13 is provided symmetrically around the output shaft 21. Not.

このように、軸孔11Aの周りに軸対称でネジ挿通孔11Bが設けられていない場合には、ネジ固定のみで出力軸21が傾斜すること無くモータ20をモータ取り付け部11に取り付けることが困難になる。そこで、本発明の実施形態に係るギヤドモータ1は、ギヤケース10におけるモータ取り付け部11に、モータ20の前端面に当接して、軸孔11Aに出力軸21を挿通したモータ20の姿勢を保持する突起部12が設けている。 As described above, when the screw insertion hole 11B is not provided symmetrically around the shaft hole 11A, it is difficult to attach the motor 20 to the motor attachment portion 11 without tilting the output shaft 21 only by screw fixation. become. Therefore, the geared motor 1 according to the embodiment of the present invention is a protrusion that holds the posture of the motor 20 with the output shaft 21 inserted through the shaft hole 11A in contact with the front end surface of the motor 20 at the motor mounting portion 11 in the gear case 10. Part 12 is provided.

突起部12は、軸孔11Aの周囲に3箇所以上設けることで、モータ20の姿勢を傾斜すること無く安定して保持することができる。図示の例では、軸孔11Aの上側の2箇所に突起部12A,12Bを設け、軸孔11Aの下側に1箇所、突起部12Cを設けている。突起部12(12A,12B,12C)は、面一の当接面12mを有しており、その当接面12mにモータ20の前端面を当接させることで、出力軸21を当接面12mに対して垂直に保持することができる。 By providing three or more protrusions 12 around the shaft hole 11A, the projection of the motor 20 can be stably held without tilting. In the illustrated example, protrusions 12A and 12B are provided at two locations above the shaft hole 11A, and one protrusion 12C is provided below the shaft hole 11A. The protrusion 12 (12A, 12B, 12C) has a flush contact surface 12m, and the output shaft 21 is brought into contact with the contact surface 12m by bringing the front end surface of the motor 20 into contact with the contact surface 12m. It can be held perpendicular to 12m.

ネジ挿通孔11Bは、このような突起部12(12A,12B,12C)の配置に対して、それらの内側に設けることが好ましい。すなわち、複数配置される突起部12(12A,12B,12C)を結ぶ直線で囲まれた範囲内にネジ挿通孔11Bが設けられることが好ましい。ネジ挿通孔11Bと突起部12(12A,12B,12C)との配置関係をこのように規制することで、軸孔11Aに対してネジ挿通孔11Bを偏った位置に配置しても、突起部12(12A,12B,12C)に加わる圧力をバランス良く分散させることができる。 The screw insertion holes 11B are preferably provided on the inside of the protrusions 12 (12A, 12B, 12C). That is, it is preferable that the screw insertion hole 11B is provided in a range surrounded by a straight line connecting the plurality of protruding portions 12 (12A, 12B, 12C). By restricting the positional relationship between the screw insertion hole 11B and the protrusions 12 (12A, 12B, 12C) in this way, the protrusions can be disposed even if the screw insertion holes 11B are disposed at positions offset from the shaft holes 11A. 12 (12A, 12B, 12C) can be dispersed in a balanced manner.

また、突起部12(12A,12B,12C)は、ネジ挿通孔11Bから遠い位置にある突起部12の当接面積が、ネジ挿通孔11Bに近い位置にある突起部12の当接面積より大きいことが好ましい。図示の例では、ネジ挿通孔11Bに近い位置に設けた突起部12A,12Bの当接面積(当接面12mの面積)に対して、ネジ挿通孔11Bから離れた位置に設けた突起部12Cの当接面を大きくしている。これによって、ネジ締め付け後のモータ20の固定状態を安定化させることができる。 Further, in the protrusion 12 (12A, 12B, 12C), the contact area of the protrusion 12 at a position far from the screw insertion hole 11B is larger than the contact area of the protrusion 12 at a position near the screw insertion hole 11B. It is preferable. In the illustrated example, the protrusion 12C provided at a position away from the screw insertion hole 11B with respect to the contact area (area of the contact surface 12m) of the protrusions 12A and 12B provided at a position close to the screw insertion hole 11B. The abutment surface is made larger. Thereby, the fixed state of the motor 20 after screw tightening can be stabilized.

図3によって、ギヤケース10に対してモータ20を取り付ける際の取り付け作業を説明する。下ケース10Aに設けられる軸孔11Aは上側が開放されており、モータ20の出力軸21に入力ギヤ22を装着した状態で、出力軸21を軸孔11Aに挿入することができるようになっている。出力軸21を軸孔11Aに挿入した後、モータ20の前端面を取り付け部11における突起部12(12A,12B,12C)に当接させた状態で、下ケース10Aの内側からネジ13をネジ挿通孔11Bに挿通し、更にネジ13をモータ20の前端面に設けられるネジ孔24にネジ込む。モータ20のネジ固定が完了した後に、下ケース10Aと上ケース10Bとを結合する。 With reference to FIG. 3, attachment work when the motor 20 is attached to the gear case 10 will be described. The upper side of the shaft hole 11A provided in the lower case 10A is open, and the output shaft 21 can be inserted into the shaft hole 11A with the input gear 22 attached to the output shaft 21 of the motor 20. Yes. After the output shaft 21 is inserted into the shaft hole 11A, the screw 13 is screwed from the inside of the lower case 10A with the front end surface of the motor 20 in contact with the protrusions 12 (12A, 12B, 12C) of the mounting portion 11. The screw 13 is inserted into the insertion hole 11 </ b> B and further screwed into a screw hole 24 provided on the front end surface of the motor 20. After the screw fixing of the motor 20 is completed, the lower case 10A and the upper case 10B are coupled.

以上説明したように、本発明の実施形態に係るギヤドモータ1は、モータ取り付け部11に突起部12を設けることで、モータ取り付け部11に設けられるネジ挿通孔11Bが軸孔11Aに対して偏った位置に配置された場合であっても、モータ20を安定した状態でネジ固定することができ、モータ20の出力軸21が傾斜するのを抑止することができる。これによって、モータ20の出力軸21に装着される入力ギヤ22とギヤケース10内に軸支されているギヤとの適正な噛み合いを得ることができる。なお、前述した実施形態では、ネジ挿通孔11Bが2個であり、ネジ13が2個の例を示しているが、これに限定されるものではなく、例えば、ネジ挿通孔11B及びネジ13がそれぞれ1個の場合であってもよい。 As described above, in the geared motor 1 according to the embodiment of the present invention, the screw insertion hole 11 </ b> B provided in the motor attachment portion 11 is biased with respect to the shaft hole 11 </ b> A by providing the projection 12 on the motor attachment portion 11. Even in the case where the motor 20 is disposed, the motor 20 can be screwed in a stable state, and the output shaft 21 of the motor 20 can be prevented from being inclined. As a result, it is possible to obtain proper meshing between the input gear 22 mounted on the output shaft 21 of the motor 20 and the gear supported in the gear case 10. In the above-described embodiment, there are two screw insertion holes 11B and two screws 13. However, the present invention is not limited to this example. For example, the screw insertion holes 11B and the screws 13 are provided. There may be one each.

1:ギヤドモータ,
10:ギヤケース,10A:下ケース,10B:上ケース,
11:モータ取り付け部,11A:軸孔,11B:ネジ挿通孔,
12(12A,12B,12C):突起部,12m:当接面,
13:ネジ,
20:モータ,21:出力軸,22:入力ギヤ,23:ケーシング,
24:ネジ孔
1: Geared motor,
10: gear case, 10A: lower case, 10B: upper case,
11: Motor mounting portion, 11A: Shaft hole, 11B: Screw insertion hole,
12 (12A, 12B, 12C): protrusion, 12m: contact surface,
13: Screw,
20: Motor, 21: Output shaft, 22: Input gear, 23: Casing,
24: Screw hole

Claims (2)

ギヤケースと、該ギヤケースに取り付けられるモータとを備え、
前記ギヤケースは、前記モータをネジ固定するためのモータ取り付け部が設けられ、
前記モータ取り付け部は、前記モータの出力軸が挿通される軸孔と、該軸孔の周囲に設けられるネジ挿通孔と、前記モータのネジ孔が設けられる面に当接して、前記軸孔に出力軸を挿通した前記モータの姿勢を保持する突起部とを備え
前記突起部は、前記軸孔の周囲に3箇所以上設けられ、前記突起部を結ぶ直線で囲まれた範囲内に前記ネジ挿通孔が設けられることを特徴とするギヤドモータ。
A gear case and a motor attached to the gear case;
The gear case is provided with a motor mounting portion for screwing the motor,
The motor mounting portion is in contact with a shaft hole through which the output shaft of the motor is inserted, a screw insertion hole provided around the shaft hole, and a surface on which the screw hole of the motor is provided. A projection that holds the posture of the motor inserted through the output shaft ,
Three or more protrusions are provided around the shaft hole, and the screw insertion hole is provided in a range surrounded by a straight line connecting the protrusions .
前記突起部は、前記ネジ挿通孔から遠い位置にある突起部の当接面積が、前記ネジ挿通孔に近い位置にある突起部の当接面積より大きいことを特徴とする請求項記載のギヤドモータ。 The protrusions abut the area of protrusions located far from the screw insertion hole, geared motor according to claim 1, wherein greater than the contact area of the protrusion at a position closer to the screw insertion hole .
JP2015085461A 2015-04-17 2015-04-17 Geared motor Expired - Fee Related JP6464018B2 (en)

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JP2525028Y2 (en) * 1987-05-29 1997-02-05 株式会社リコー Drive
JPH0540687Y2 (en) * 1989-02-07 1993-10-15
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