JPH0610166Y2 - Bonding structure of elastic polymer members - Google Patents
Bonding structure of elastic polymer membersInfo
- Publication number
- JPH0610166Y2 JPH0610166Y2 JP1988057371U JP5737188U JPH0610166Y2 JP H0610166 Y2 JPH0610166 Y2 JP H0610166Y2 JP 1988057371 U JP1988057371 U JP 1988057371U JP 5737188 U JP5737188 U JP 5737188U JP H0610166 Y2 JPH0610166 Y2 JP H0610166Y2
- Authority
- JP
- Japan
- Prior art keywords
- engaging
- piece portion
- rotating body
- output shaft
- engaging piece
- 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.)
- Expired - Lifetime
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- Connection Of Plates (AREA)
- Gears, Cams (AREA)
Description
【考案の詳細な説明】 考案の技術分野 本考案は、高分子弾性体部材とこれが装着されるべき回
転体との結合構造に関する。TECHNICAL FIELD OF THE INVENTION The present invention relates to a coupling structure of a polymeric elastic member and a rotating body to which the polymeric elastic member is to be mounted.
従来技術 従来、例えば電子レンジのマイクロ波攪拌用スタラー駆
動源としてギヤードモータを用いる場合に、上記スタラ
ーが取り付けられるギヤードモータの出力軸は、電子レ
ンジ内の熱エネルギーに対する耐熱性、マイクロ波に対
する耐破壊性などを有していなければならない。このた
め、出力軸の材料は、耐熱性および低い誘電性を有する
材料例えばフッ素樹脂などの高分子材料によって構成さ
れている。2. Description of the Related Art Conventionally, for example, when a geared motor is used as a stirrer driving source for microwave agitation of a microwave oven, the output shaft of the geared motor to which the stirrer is attached has heat resistance against heat energy in the microwave oven and destruction resistance to microwaves Must have sex. Therefore, the material of the output shaft is composed of a material having heat resistance and low dielectric properties, for example, a polymer material such as fluororesin.
一方、上記ギヤードモータは、ロータの回転を上記出力
軸に伝達するために、減速歯車列を内蔵している。この
減速歯車列の最終段の出力歯車は、上記出力軸と別体に
構成され、両者の嵌り合いによって、一体的に回転する
よう結合されている。そして、この両者は、弾性変形後
の係り合い、すなわち耐熱樹脂製の出力軸に突出形成さ
れた係合片部を出力歯車に形成された溝内に弾性変形さ
れて挿入し、挿入後に、係合片部と出力歯車側の係合部
とを係り合わせることにより、回転方向に回り止めさ
れ、かつ軸の方向に抜け止め状態として一体化する。On the other hand, the geared motor incorporates a reduction gear train in order to transmit the rotation of the rotor to the output shaft. The output gear at the final stage of the reduction gear train is formed separately from the output shaft, and is fitted to both of them so as to rotate integrally. Then, the two are engaged after elastic deformation, that is, the engaging piece portion protrudingly formed on the output shaft made of heat-resistant resin is elastically deformed and inserted into the groove formed in the output gear, and after the insertion, By engaging the coupling piece portion and the engaging portion on the output gear side, they are prevented from rotating in the rotational direction and integrated in the axial direction so as to prevent them from coming off.
ところが、このような結合構造によると、出力軸の係合
片部が出力歯車側の係合部の斜面を滑りながら溝内に嵌
り合う過程で、係合片部自体がたわんで、溝の中に入り
込まず、両者が結合できないこともある。また、これの
防止のために、係合片部と係合部との重なり量すなわち
弾性変形による逃げ量を充分に小さくすると、係合片部
は係合部に当たりながら変形し、溝内に簡単に入り込め
る状態となる。しかし、このような係合によると、両者
の結合後に、それらが外れ易い状態となっているため、
両者の結合関係が不充分となる。However, according to such a coupling structure, in the process in which the engaging piece of the output shaft fits in the groove while sliding on the slope of the engaging portion on the output gear side, the engaging piece itself bends and the inside of the groove Sometimes they don't get in and they can't combine. To prevent this, if the overlapping amount between the engaging pieces and the engaging section, that is, the escape amount due to elastic deformation, is made sufficiently small, the engaging piece will deform while hitting the engaging section, and can easily fit in the groove. You will be able to enter. However, according to such an engagement, after the both are joined, they are in a state of being easily disengaged,
The connection between the two becomes insufficient.
考案の目的 ここに、本考案の目的は、高分子弾性体部材をその弾性
変形を利用して結合した後に、両者の係り合いを確実化
し、充分な抜け止め強度を確保することである。Object of the Invention Here, an object of the present invention is to secure the engagement between the polymer elastic member after the polymer elastic member is coupled by utilizing its elastic deformation, and to secure a sufficient retaining strength.
考案の解決手段 上記目的の下に、本考案は、高分子弾性体部材の弾性を
利用して、高分子弾性体部材の係合片部を弾性変形させ
ながら、回転体の係合部に係り合い可能な状態で嵌め込
むと共に、その高分子弾性体部材の塑性変形を利用し、
係合片部を加工硬化させることにより、係合片部と係合
部とを係り合わせ、また当該係合片部の硬度を高めるよ
うにしている。Means for Solving the Problems Under the above-mentioned object, the present invention relates to an engaging part of a rotating body while elastically deforming an engaging piece part of the elastic polymer member by utilizing elasticity of the elastic polymer member. While fitting in a fit state, the plastic deformation of the polymer elastic member is used,
By hardening the engaging piece portion, the engaging piece portion and the engaging portion are engaged with each other, and the hardness of the engaging piece portion is increased.
もちろん、ここで言う「塑性変形」は、固体物質に力を
加えて変形した後、応力を取り除いても原形に戻らない
変形をいい、また「弾性変形」は、固体物質に応力を加
えたとき起こる全変形のうち、応力を取り除くとただち
に復元する変形をいい、さらに「加工硬化」は、加工に
よって材料が大きな塑性歪みを受けると、変形に対する
抵抗を増し、硬くなる現象をいう。Of course, "plastic deformation" here refers to the deformation that does not return to the original shape even if stress is removed after deforming by applying force to the solid substance, and "elastic deformation" is when the solid substance is stressed. Of all the deformations that occur, it refers to the deformation that immediately recovers when the stress is removed, and "work hardening" refers to the phenomenon that when a material undergoes a large plastic strain, the resistance to deformation increases and the material becomes hard.
実施例の構成 第１図ないし第３図は、本考案の結合構造をギヤードモ
ータ１に応用し、高分子弾性体部材としての出力軸２と
回転体としての出力歯車３とを結合する例である。な
お、ギヤードモータ１の具体例は、後に第４図とともに
説明する。Configuration of Embodiments FIGS. 1 to 3 show an example in which the coupling structure of the present invention is applied to a geared motor 1 to couple an output shaft 2 as a polymeric elastic member and an output gear 3 as a rotating body. is there. A specific example of the geared motor 1 will be described later with reference to FIG.
高分子弾性体部材としての出力軸２は、塑性変形可能
で、かつ高い弾性を有する材料例えばフッ素樹脂によっ
て成形されており、一端の中心円筒部４の外部分で、半
径方向に延びる係合片部５を、また中心円筒部４の部分
で中心孔６をそれぞれ一体的に備えている。The output shaft 2 as a polymeric elastic member is formed of a material that is plastically deformable and has high elasticity, for example, fluororesin, and is an engaging piece extending in the radial direction at the outer portion of the central cylindrical portion 4 at one end. The part 5 and the central hole 6 are integrally provided in the central cylindrical part 4.
また、回転体としての出力歯車３は、高分子弾性体部材
としての出力軸２と異なる材料例えばポリアセタール製
であり、外周に歯３ａを有し、出力軸２と結合すべき側
で環状のスラスト受け７、上記中心円筒部４と嵌り合う
大きさの中心凹陥部８、および上記中心孔６と嵌り合う
中心円筒部９、さらに中心凹陥部８から半径方向外側に
延びる係合溝１０を一体的に備えている。この係合溝１
０は、係合片部５と嵌り合う大きさであり、その両端部
でポケット部１１を形成し、かつこのポケット部１１の
開口側で係合部１２につながっている。この係合部１２
は、出力軸２の係合片部５の先端部分と係り合う部分で
あり、ポケット部１１側で係合溝１０の底面に対し平行
になっているが、開口面側で案内斜面１３を形成してい
る。そして、この一対の係合部１２の半径方向の寸法
は、係合片部５の長さと等しいか、またはそれよりも小
さく設定されている。それらの寸法差が両者の結合初期
の重なり量となっている。なお、この出力歯車３の他の
部分は、ボス部１４となっており、この部分で下軸１５
および円筒部１６を一体的に形成している。The output gear 3 as a rotating body is made of a material different from that of the output shaft 2 as a polymer elastic member, for example, polyacetal, has teeth 3a on the outer circumference, and has an annular thrust on the side to be coupled with the output shaft 2. The receiver 7, the central recessed portion 8 of a size that fits with the central cylindrical portion 4, the central cylindrical portion 9 that fits with the central hole 6, and the engagement groove 10 that extends radially outward from the central concave portion 8 are integrally formed. Be prepared for. This engagement groove 1
0 is a size that fits with the engaging piece portion 5, forms a pocket portion 11 at both ends thereof, and is connected to the engagement portion 12 on the opening side of the pocket portion 11. This engaging portion 12
Is a portion that engages with the tip end portion of the engagement piece portion 5 of the output shaft 2 and is parallel to the bottom surface of the engagement groove 10 on the pocket portion 11 side, but forms a guide slope 13 on the opening surface side. is doing. The radial dimension of the pair of engaging portions 12 is set to be equal to or smaller than the length of the engaging piece portion 5. The dimensional difference between them is the amount of overlap between the two at the initial stage of bonding. The other part of the output gear 3 is a boss portion 14, and the lower shaft 15 is formed at this portion.
And the cylindrical portion 16 is integrally formed.
実施例の作用 高分子弾性体部材としての出力軸２および回転体として
の出力歯車３は、それぞれ別々に成形され、ギヤードモ
ータ１への組み込みに際し結合によって一体化する。す
なわち、両者の結合に際し、出力軸２は、出力歯車３の
係合溝１０の内部に軸の方向に挿入される。この挿入過
程で、係合片部５は、案内斜面１３に当たって弾性変形
し、たわむことによって、重なり量を吸収しながら、最
終的にポケット部１１の内部に入り、弾性的に復元する
ことによって、重なり量によりポケット部１１に係り合
う。このときの係り合い量は、初期の重なり量と対応し
ている。この嵌め込みに際し、中心円筒部９は、中心孔
６に嵌り、両者を同一軸線上に一致させ、かつ嵌め合い
方向に案内していく。Operation of the embodiment The output shaft 2 as a polymer elastic member and the output gear 3 as a rotating body are separately molded, and are integrated by coupling when assembled into the geared motor 1. That is, when connecting the two, the output shaft 2 is inserted in the engagement groove 10 of the output gear 3 in the axial direction. During this insertion process, the engaging piece portion 5 hits the guide slope 13 and elastically deforms and bends to absorb the overlapping amount, and finally enters the inside of the pocket portion 11 and elastically restores. The pocket portion 11 is engaged with each other depending on the overlapping amount. The engagement amount at this time corresponds to the initial overlap amount. At the time of this fitting, the central cylindrical portion 9 fits in the central hole 6, aligns them on the same axis, and guides them in the fitting direction.
このあと、係合片部５の側面に、中心凹陥部８の側から
プレス押圧加工によって、パンチ跡１７が形成される。
これにより、係合片部５は、係合部１２の近くで、塑性
歪みを受け、塑性変形し、係合片部５の長さ方向すなわ
ち半径方向に延び、かつ幅方向にも大きくなる。このよ
うなプレス押圧加工によって、係合片部５は、部分的に
加工硬化し、弾性力を失い、剛性を高め、かつ外力に対
し抵抗力を増し、変形しにくくなる。この結果、出力軸
２は、出力歯車３に対し係合片部５と係合溝１０との嵌
り合いによって、回転方向に位置決めされ、かつ回り止
め状態となり、さらに加工硬化後の係合片部５の先端部
分と係合部１２との係り合いによって、抜け止め状態と
なり、かつ外力特に出力軸２の方向の力に対し結合前よ
りも大きな剛性で変形しにくくなる。このようにして、
高分子弾性体部材としての出力軸２は、回転体としての
出力歯車３に対し位置決め状態で、しかも大きな回転力
を伝達できる状態で結合する。Then, a punch mark 17 is formed on the side surface of the engagement piece portion 5 by press pressing from the side of the central recessed portion 8.
As a result, the engagement piece portion 5 receives plastic strain near the engagement portion 12, undergoes plastic deformation, extends in the length direction of the engagement piece portion 5, that is, in the radial direction, and increases in the width direction. By such press-pressing, the engaging piece portion 5 is partially work-hardened, loses its elastic force, enhances rigidity, increases resistance to external force, and becomes difficult to deform. As a result, the output shaft 2 is positioned in the rotational direction by the engagement of the engagement piece portion 5 and the engagement groove 10 with the output gear 3 and is in the rotation stop state. Due to the engagement of the tip portion of 5 with the engaging portion 12, a retaining state is achieved, and it is more difficult to deform with an external force, particularly with respect to a force in the direction of the output shaft 2, with greater rigidity than before the coupling. In this way
The output shaft 2 as a polymer elastic member is coupled to the output gear 3 as a rotating body in a positioned state and capable of transmitting a large rotational force.
このようにして、加工硬化後に、係合片部５は、係合部
１２に対し挿入前よりも大きな重なり量で係り合うこと
になる。したがって、係合片部５と係合部１２との重な
り量は、初期にゼロであってもよい。また係合片部５と
係合溝１０との嵌め合い寸法などは予め大きな公差で製
作されていても、それらの公差は、結合後に完全に吸収
されることになる。In this way, after work hardening, the engagement piece portion 5 engages with the engagement portion 12 with a larger amount of overlap than before insertion. Therefore, the overlapping amount of the engagement piece portion 5 and the engagement portion 12 may be zero initially. Further, even if the fitting dimensions of the engagement piece portion 5 and the engagement groove 10 are manufactured with large tolerances in advance, those tolerances are completely absorbed after the coupling.
ギヤードモータの具体例 結合後の出力軸２および出力歯車３は第３図のほか、第
４図に示すように、出力軸２の部分で蓋ケース１８の軸
受け部１９によってラジアル方向に支持され、また下軸
１５の部分で下ケース２０の軸受け部２１によって、ラ
ジアル方向に回転自在に支持され、またスラスト受け７
および円筒部１６の部分で対応の蓋ケース１８および下
ケース２０の内面に当たって、スラスト方向に規制され
ている。なお、軸受け部１９、２１は、バーリング加工
によって形成されるため、滑らかな面で軸外周面に接し
ている。Specific Example of Geared Motor The output shaft 2 and the output gear 3 after coupling are supported by the bearing portion 19 of the lid case 18 in the radial direction at the output shaft 2 portion as shown in FIG. 4 and FIG. The lower shaft 15 is rotatably supported in the radial direction by the bearing portion 21 of the lower case 20.
The cylindrical portion 16 abuts the inner surfaces of the corresponding lid case 18 and lower case 20 and is regulated in the thrust direction. Since the bearings 19 and 21 are formed by burring, they are in contact with the outer peripheral surface of the shaft with smooth surfaces.
ギヤードモータ１のロータ２２は、永久磁石によって構
成されており、ロータボス２３によりロータ軸２４に対
し回転自在に支持されている。また、下ケース２０は、
内部のコア２５と共に切り起こしによって、ロータ２２
を取り囲むように複数の磁極片２６を形成している。そ
して、これらの磁極片２６は、下ケース２０とコア２５
との間に装着されたコイルボビン２７の巻線２８によっ
て励磁される。なお、この巻線２８は、ボビンカバー３
０の内部でコイルボビン２７に固定された端子２９に接
続されている。The rotor 22 of the geared motor 1 is composed of a permanent magnet, and is rotatably supported by the rotor boss 23 with respect to the rotor shaft 24. In addition, the lower case 20 is
By cutting and raising together with the inner core 25, the rotor 22
A plurality of magnetic pole pieces 26 are formed so as to surround the. The magnetic pole pieces 26 are formed on the lower case 20 and the core 25.
It is excited by the winding 28 of the coil bobbin 27 mounted between In addition, the winding 28 is formed by the bobbin cover 3
It is connected to a terminal 29 fixed to the coil bobbin 27 inside 0.
そして、上記ロータボス２３のピニオン３１の回転は、
伝達歯車３２を介し、減速歯車列として、複合型の一番
歯車３３、二番歯車３４によって、最終的に出力歯車３
に伝達される。なお、これらの伝達歯車３２、一番歯車
３３および二番歯車３４は、蓋ケース１８と下ケース２
０との間に固定された歯車軸３５、３６、３７によって
回転自在に支持されている。The rotation of the pinion 31 of the rotor boss 23 is
Through the transmission gear 32, as a reduction gear train, a composite type first gear 33 and a second gear 34 are used to finally output the output gear 3
Be transmitted to. The transmission gear 32, the first gear 33, and the second gear 34 are used for the lid case 18 and the lower case 2.
It is rotatably supported by gear shafts 35, 36, and 37 fixed between 0 and 0.
考案の他の実施例 上記実施例は、ギヤードモータ１の出力軸２を高分子弾
性体部材とし、また出力歯車３を回転体として説明して
いるが、本考案の結合構造は、ギヤードモータ１に限ら
ず、他の部品間の係り合い方式の結合にも応用できる。Other Embodiments of the Invention In the above embodiments, the output shaft 2 of the geared motor 1 is made of a polymer elastic member and the output gear 3 is made of a rotating body. Not limited to the above, the present invention can also be applied to engagement-type coupling between other components.
考案の効果 本考案では、次の特有の効果が得られる。Effect of the Invention The present invention has the following unique effects.
高分子弾性体部材の係合片部が結合すべき回転体の溝内
に納められた後、プレス押圧加工による塑性変形によっ
て、係り合いのための重なり量が充分に確保できる。し
かも、塑性変形によって、係合片部の係り合い部分が加
工硬化し、高分子弾性部材の抜け方向の剛性を高めるた
め、両者の結合強度が高められる。しかも、この塑性変
形によって係合片部が嵌り合いの公差を吸収する方向
に、また係り合い量を増加する方向に変形するため、嵌
め合いや係り合い部分の設計が容易となる。After the engaging piece portion of the polymeric elastic member is housed in the groove of the rotating body to be coupled, the plastic deformation due to press pressing can sufficiently secure the overlapping amount for engagement. Moreover, due to the plastic deformation, the engaging portion of the engaging piece portion is work-hardened and the rigidity of the polymeric elastic member in the pulling direction is increased, so that the bonding strength between the both is increased. Moreover, due to this plastic deformation, the engaging piece portion is deformed in a direction to absorb the tolerance of the fitting and in a direction to increase the engaging amount, so that the fitting and the engaging portion can be easily designed.
特に、高分子弾性体部材としての出力軸と回転体とが同
じ材料で形成できない結合構造の場合に、高分子弾性体
部材としての出力軸の係合片部が回転体の係合溝に簡単
に係合することができ、これによって高分子弾性体部材
としての出力軸と回転体との間で仮保持させる効果があ
り、しかも高分子弾性体部材としての出力軸と回転体と
を一体に結合すると、高分子弾性体部材としての出力軸
と回転体とが一体成形されたものに匹敵する結合性能を
有するため、この種の異なる材料の結合構造として有益
である。In particular, when the output shaft as the polymer elastic body member and the rotating body cannot be formed of the same material, the engaging piece of the output shaft as the polymer elastic body member can be easily fitted into the engaging groove of the rotating body. The effect of temporarily holding the output shaft as a polymer elastic member and the rotating body by this is, and the output shaft as a polymer elastic member and the rotating body are integrally formed. When combined, the output shaft as the polymer elastic member and the rotating body have a combining performance comparable to that integrally formed, and therefore, it is useful as a connecting structure of this kind of different materials.
第１図は本考案の結合構造を出力軸と出力歯車との結合
部分に応用した例の斜面図、第２図は係り合い部分の一
部の拡大破断斜面図、第３図は結合状態の拡大断面図、
第４図はギヤードモータの断面図である。 １……ギヤードモータ、２……高分子弾性体部材として
の出力軸、３……回転体としての出力歯車、５……係合
片部、１０……係合溝、１１……ポケット部、１２……
係合部、１３……案内斜面、１７……パンチ跡。FIG. 1 is a perspective view of an example in which the coupling structure of the present invention is applied to a coupling portion of an output shaft and an output gear, FIG. 2 is an enlarged cutaway perspective view of a part of the engaging portion, and FIG. 3 is a coupling state. Enlarged sectional view,
FIG. 4 is a sectional view of the geared motor. DESCRIPTION OF SYMBOLS 1 ... Geared motor, 2 ... Output shaft as a polymeric elastic member, 3 ... Output gear as a rotating body, 5 ... Engaging piece part, 10 ... Engaging groove, 11 ... Pocket part, 12 ……
Engagement part, 13 ... Guide slope, 17 ... Punch mark.
Claims (1)
子弾性体部材と、この高分子弾性体部材の材料と異なる
材料の回転体とからなり、回転体に高分子弾性体を装着
する結合構造であって、上記高分子弾性体部材の軸の一
端には半径方向に延び上記回転体と係合するための係合
片部が形成されると共に、上記回転体には上記係合片部
と係合するための係合溝が直径方向に形成され、この係
合溝の端に上記係合片部と係り合う係合部が形成され、
上記係合部と上記係合部とに重なり量を設け、上記高分
子弾性体部材の係合片部がプレス押圧加工されたとき、
上記係合片部の塑性変形によりこの係合片部と上記係合
溝の係合部とが係合し、これらの両者が一体に結合され
ていることを特徴とする高分子弾性体部材の結合構造。1. A coupling comprising a polymeric elastic body member which is plastically deformable and has high elasticity, and a rotating body made of a material different from the material of the polymeric elastic body member, wherein the polymeric elastic body is mounted on the rotating body. In the structure, one end of the shaft of the polymeric elastic member is formed with an engaging piece portion extending in the radial direction for engaging with the rotating body, and the engaging piece portion is formed on the rotating body. An engaging groove for engaging with is formed in a diametrical direction, and an engaging portion engaging with the engaging piece portion is formed at an end of the engaging groove,
An overlapping amount is provided in the engaging portion and the engaging portion, and when the engaging piece portion of the polymeric elastic member is press-pressed,
By the plastic deformation of the engaging piece portion, the engaging piece portion and the engaging portion of the engaging groove are engaged with each other, and both of them are integrally connected. Bond structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988057371U JPH0610166Y2 (en) | 1988-04-28 | 1988-04-28 | Bonding structure of elastic polymer members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988057371U JPH0610166Y2 (en) | 1988-04-28 | 1988-04-28 | Bonding structure of elastic polymer members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01166805U JPH01166805U (en) | 1989-11-22 |
| JPH0610166Y2 true JPH0610166Y2 (en) | 1994-03-16 |
Family
ID=31283229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988057371U Expired - Lifetime JPH0610166Y2 (en) | 1988-04-28 | 1988-04-28 | Bonding structure of elastic polymer members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0610166Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4492842B2 (en) * | 2003-04-04 | 2010-06-30 | 株式会社エンプラス | Resin gear and resin rotational power transmission member |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57167919U (en) * | 1981-04-16 | 1982-10-22 | ||
| JPS59195207U (en) * | 1983-06-13 | 1984-12-25 | 松下電器産業株式会社 | rotating device |
| JPS6234049U (en) * | 1985-05-09 | 1987-02-28 |
-
1988
- 1988-04-28 JP JP1988057371U patent/JPH0610166Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01166805U (en) | 1989-11-22 |
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