JPH0742810A - Selective slide type gearing device - Google Patents

Selective slide type gearing device

Info

Publication number
JPH0742810A
JPH0742810A JP5190201A JP19020193A JPH0742810A JP H0742810 A JPH0742810 A JP H0742810A JP 5190201 A JP5190201 A JP 5190201A JP 19020193 A JP19020193 A JP 19020193A JP H0742810 A JPH0742810 A JP H0742810A
Authority
JP
Japan
Prior art keywords
chamfer
gear
tooth
cog
cut
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.)
Granted
Application number
JP5190201A
Other languages
Japanese (ja)
Other versions
JP3079458B2 (en
Inventor
Tamaki Sasaki
環 佐々木
Hirokazu Moroto
宏和 諸戸
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP05190201A priority Critical patent/JP3079458B2/en
Publication of JPH0742810A publication Critical patent/JPH0742810A/en
Application granted granted Critical
Publication of JP3079458B2 publication Critical patent/JP3079458B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Gears, Cams (AREA)
  • Structure Of Transmissions (AREA)

Abstract

PURPOSE:To generate a sufficienct push-apart force at all times irrespective of the manufacturing errors without lessening the effective cog width, i.e. without lowering the cog strength. CONSTITUTION:A selective slide type gearing device concerned is equipped with a fixed gear 21 and a sliding gear 23 which slides in the axial direction to mesh with the fixed gear 21 selectively, and a chamfer 27 consisting of a pair of chamfer surfaces 26, 26 inclining from approx. the center in cog thickness direction of the end face of cog 24 toward the flank 25 on each side is formed on the end faces of the cogs 24 of the two gears 21, 23 mating with one another at the time of coming into the mesh. Therefore, the ridge 28 of the chamfer 27 is formed in a circular arc, and the cog root of the chamfer 27 is cut by a cut face 29 approx. perpendicularly intersecting the gear axis.

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、自動車の変速装置等に
適用される選択摺動式歯車装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a selective sliding type gear device applied to a transmission device of an automobile.

【0002】[0002]

【従来の技術】図4は従来の自動車の変速装置の構成を
示す。図において、符号1は固定歯車であり、この固定
歯車1は第1の回転軸2に固定されている。又、符号3
はこの固定歯車1と選択的に噛み合う摺動歯車である。
この摺動歯車3は、第1の回転軸2と平行に配された第
2の軸4に、軸受5を介して軸方向摺動自在に設けられ
ている。そして、固定歯車1と摺動歯車3とにより、所
定変速段を選択可能な選択摺動式歯車機構が構成されて
いる。
2. Description of the Related Art FIG. 4 shows the structure of a conventional vehicle transmission. In the figure, reference numeral 1 is a fixed gear, and this fixed gear 1 is fixed to a first rotating shaft 2. Also, reference numeral 3
Is a sliding gear that selectively meshes with the fixed gear 1.
The sliding gear 3 is provided on a second shaft 4 arranged in parallel with the first rotating shaft 2 via a bearing 5 so as to be slidable in the axial direction. Then, the fixed gear 1 and the sliding gear 3 constitute a selective sliding gear mechanism capable of selecting a predetermined shift speed.

【0003】この選択摺動式歯車機構では、固定歯車1
と摺動歯車3とが容易に噛み合うことができるように、
噛み合い開始時に相対する両歯車1、3の歯部端面に、
チャンファ(面取り部)を設けている。
In this selective sliding type gear mechanism, the fixed gear 1
And the sliding gear 3 can be easily meshed with each other.
At the tooth end faces of both gears 1 and 3 facing each other at the start of meshing,
A chamfer (chamfer) is provided.

【0004】図5にチャンファを設けた歯車の一例を示
す。又、図6にその歯部端面の拡大図を示す。この例
は、実開平3−17452号公報に記載のものであり、
歯車7の各歯8の端面には、その歯厚方向中央側から両
側の歯面9、9に向かって傾斜した一対の面(これを
「チャンファ面」という)10、10からなるチャンフ
ァ11が形成されている。12はチャンファ稜線であ
り、ここでは直線状に形成されている。又、αで示すの
はチャンファ角である。このチャンファ角αは、2つの
チャンファ面10、10同士の交差角度であり、例えば
歯車7のピッチ円を含む円筒面上における交差角度とし
て定義されている。
FIG. 5 shows an example of a gear provided with a chamfer. Further, FIG. 6 shows an enlarged view of the end surface of the tooth portion. This example is described in Japanese Utility Model Publication No. 3-17452.
At the end face of each tooth 8 of the gear 7, there is a chamfer 11 including a pair of faces (referred to as “chamfer faces”) 10 and 10 inclined from the tooth thickness center side toward the tooth faces 9 on both sides. Has been formed. Reference numeral 12 is a chamfer ridge line, which is formed in a straight line here. Further, α indicates a chamfer angle. The chamfer angle α is an intersection angle between the two chamfer surfaces 10 and 10, and is defined as an intersection angle on a cylindrical surface including the pitch circle of the gear 7, for example.

【0005】このようなチャンファ11が設けられてい
ることにより、歯車同士が噛み合いを始めた際に、押し
分け力が作用して歯車の位相が自動調整され、両歯車が
容易に噛み合うようになる。
By providing such a chamfer 11, when the gears start to mesh with each other, the pushing force acts to automatically adjust the phase of the gears so that both gears can easily mesh with each other.

【0006】[0006]

【発明が解決しようとする課題】ところで、噛み合い時
の押し分け力の増大を図るために、前記のチャンファ角
をもっと小さくしたいという要望がある。
By the way, there is a demand to further reduce the chamfer angle in order to increase the pushing force when engaging.

【0007】しかし、チャンファ角を小さくすると、全
体の歯幅が一定の場合、有効歯幅が小さくなってしま
い、強度低下を来す。
However, if the chamfer angle is made small, the effective tooth width becomes small when the entire tooth width is constant, resulting in a decrease in strength.

【0008】一方、強度低下を生じないように、有効歯
幅を確保した上で、チャンファ角を小さくしようとする
と、全体の歯幅を大きくせざるを得ず、スペースの増大
を来す。
On the other hand, if it is attempted to reduce the chamfer angle after securing an effective tooth width so as not to reduce the strength, the entire tooth width must be increased, resulting in an increase in space.

【0009】本発明は、このような従来の問題に鑑みて
なされたものであって、常に有効な押し分け力を発生さ
せることができ、全体の歯幅を増大させずしかも有効歯
幅を減少させずに済むような選択摺動式歯車装置を提供
することを目的とする。
The present invention has been made in view of the above-mentioned conventional problems, and can always generate an effective pushing force, which does not increase the overall tooth width but reduces the effective tooth width. It is an object of the present invention to provide a selective sliding type gear device that can be dispensed with.

【0010】[0010]

【課題を解決するための手段】本発明は、固定歯車と、
軸線方向に摺動させられて前記固定歯車と選択的に噛合
する摺動歯車とを備え、噛み合い開始時に相対する前記
両歯車の歯部端面に、該歯部端面の歯厚方向略中央から
両側の歯面に向かって傾斜した一対の面からなるチャン
ファが形成された選択摺動式歯車機構において、前記チ
ャンファの稜線を凸曲線状に形成すると共に、チャンフ
ァの歯元部を歯車の軸線と略直交する面でカットしたこ
とにより、上記課題を解決したものである。
SUMMARY OF THE INVENTION The present invention comprises a fixed gear,
A sliding gear that is slid in the axial direction and that selectively meshes with the fixed gear is provided, and at the tooth end faces of the both gears facing each other at the start of the meshing, both sides from substantially the center in the tooth thickness direction of the tooth end faces. In the selective sliding type gear mechanism in which a chamfer consisting of a pair of surfaces inclined toward the tooth surface of the chamfer is formed in a convex curve shape, and the root portion of the chamfer is substantially aligned with the axis of the gear. The above problem is solved by cutting in the planes orthogonal to each other.

【0011】[0011]

【作用】全体の歯幅を増大させず、しかも有効歯幅を減
少させることなくチャンファ角を小さくする構造とし
て、図7に示すように、押し分け力に関与しないチャン
ファ11の歯元部を、歯車の軸線と直交する面でカット
することが考えられる。図中14がカット面である。
As shown in FIG. 7, the tooth root portion of the chamfer 11 which does not participate in the pushing force is provided as a gear so as to reduce the chamfer angle without increasing the overall tooth width and reducing the effective tooth width. It is conceivable to cut in a plane orthogonal to the axis line of. 14 is a cut surface in the figure.

【0012】この場合、両歯車のチャンファ稜線12の
製造誤差が全くなければ、図8に示すように、チャンフ
ァ稜線12がカット面14に当たることがなく、押し分
け力が有効に発生することになる。
In this case, if there is no manufacturing error of the chamfer ridgeline 12 of both gears, the chamfer ridgeline 12 does not hit the cut surface 14 as shown in FIG. 8, and the pushing force is effectively generated.

【0013】しかしながら、現実には製造上の誤差によ
り、図9に示すように、両歯車の直線状のチャンファ稜
線12の角度が微妙に異なる場合があり、チャンファ稜
線12が最初に相手歯車のカット面14に当たって、押
し分け力が有効に発生しない恐れが生じる。
However, in reality, due to manufacturing errors, the angle of the linear chamfer ridgeline 12 of the two gears may be slightly different, as shown in FIG. There is a possibility that the pushing force may not be effectively generated by hitting the surface 14.

【0014】本発明の選択摺動式歯車装置においては、
チャンファ稜線が凸曲線状に形成されているので、チャ
ンファ稜線同士が点接触することになり、チャンファ稜
線の製造誤差によりチャンファ稜線が最初にカットした
部分に当たることをなくすことが可能となる。
In the selective sliding type gear device of the present invention,
Since the chamfer ridge line is formed in a convex curve shape, the chamfer ridge lines come into point contact with each other, and it is possible to prevent the chamfer ridge line from hitting the first cut portion due to a manufacturing error of the chamfer ridge line.

【0015】又、前述したようにチャンファの歯元部が
カットされていることから、全体の歯幅を増大させず、
かつ有効歯幅を減少させずに、チャンファ角を小さくす
ることができる。
Further, since the tooth root portion of the chamfer is cut as described above, the overall tooth width is not increased,
Moreover, the chamfer angle can be reduced without reducing the effective tooth width.

【0016】[0016]

【実施例】以下、本発明の一実施例を図面を参照しなが
ら説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

【0017】図1は実施例の選択摺動式歯車装置の要部
側面図、図2は同歯車装置の歯車の歯部の拡大側面図、
図3は歯部を上から見た平面図である。
FIG. 1 is a side view of a main portion of a selective sliding type gear device according to an embodiment, and FIG. 2 is an enlarged side view of a tooth portion of a gear of the gear device.
FIG. 3 is a plan view of the tooth portion viewed from above.

【0018】図1において、21は固定歯車であり、第
1の回転軸22に固定されている。23は摺動歯車で、
図示しない第2の回転軸に軸線方向摺動自在に設けられ
ている。
In FIG. 1, 21 is a fixed gear, which is fixed to the first rotating shaft 22. 23 is a sliding gear,
It is provided on a second rotating shaft (not shown) so as to be slidable in the axial direction.

【0019】両歯車21、23の噛み合い開始時に相対
する各歯24の端面には、図3に示すように、各歯24
の端面の歯厚方向略中央から両側の歯面25、25に向
かって傾斜した一対のチャンファ面26、26からなる
チャンファ27が形成されている。各チャンファ面2
6、26はわずかに凸に膨らんだ凸曲面からなり、それ
により両チャンファ面26、26が交差してできたチャ
ンファ稜線28は、円弧状に形成されている。
As shown in FIG. 3, the teeth 24 are provided on the end faces of the teeth 24 facing each other at the start of meshing of the gears 21 and 23.
A chamfer 27 is formed of a pair of chamfer surfaces 26, 26 that are inclined toward the tooth surfaces 25, 25 on both sides from the substantially center of the end surface in the tooth thickness direction. Each chamfer face 2
6 and 26 are convex curved surfaces that bulge slightly convexly, and thereby the chamfer ridge line 28 formed by intersecting both chamfer surfaces 26 and 26 is formed in an arc shape.

【0020】このチャンファ稜線28の曲率中心Oは、
歯車21、23の歯部同士が噛み合うときに、最初にチ
ャンファ稜線28の略中間部同士が接触するような位置
に設定されている。
The center of curvature O of this chamfer ridge 28 is
When the tooth portions of the gears 21 and 23 mesh with each other, the chamfer ridge lines 28 are initially set so that the substantially middle portions thereof come into contact with each other.

【0021】又、押し分け力の発生に関与しないチャン
ファ27の歯元部には、図2、図3に示すようなカット
面29が設けられている。このカット面29は、歯車2
1、23の軸線と直交する面によって構成されている。
Further, a cut surface 29 as shown in FIGS. 2 and 3 is provided at the tooth root portion of the chamfer 27 which is not involved in the generation of the pushing force. This cut surface 29 is the gear 2
It is constituted by a plane orthogonal to the axes of 1, 23.

【0022】前記チャンファ稜線の曲率Rは、該カット
面29のカット量との関係で、製造ばらつき等に拘らず
必ず最初にチャンファ稜線28の前記略中間部同士が接
触するという条件(小さな曲率)を満足した上で、でき
るだけ大きな曲率とされる。それは、曲率が小さくなっ
てくると、ばらつきにより最初の接触位置がカット面側
にずれた場合には実質的なチャンファ角が大きくなって
十分な押し分け力が得られなくなるためである。
The curvature R of the chamfer ridgeline is related to the cutting amount of the cut surface 29, and the condition that the substantially intermediate portions of the chamfer ridgeline 28 always contact first regardless of manufacturing variations or the like (small curvature). Is satisfied and the curvature is as large as possible. This is because as the curvature becomes smaller, a substantial chamfer angle becomes large and a sufficient pushing force cannot be obtained when the initial contact position is displaced to the cut surface side due to variations.

【0023】このカット面29の存在により、有効歯幅
を十分に確保して、チャンファ角α1を従来のチャンフ
ァ角α2よりも小さく設定してあるものの、全体の歯幅
が所定の寸法内に収められている。なお、図3におい
て、従来のチャンファを点線で示す。
Due to the presence of the cut surface 29, the effective tooth width is sufficiently secured and the chamfer angle α1 is set to be smaller than the conventional chamfer angle α2, but the entire tooth width is kept within a predetermined dimension. Has been. Note that, in FIG. 3, a conventional chamfer is shown by a dotted line.

【0024】次に作用を説明する。Next, the operation will be described.

【0025】この歯車機構においては、歯車21、23
の歯部端面に設けたチャンファ稜線28が円弧状に形成
されているので、チャンファ稜線28の形状等に若干の
誤差があっても、チャンファ稜線28のいずれかの場所
で最初に相互に点接触することになり、チャンファ稜線
28が最初にカット面29に当たるおそれがなくなる。
又、チャンファ27の歯元部にカット面29を設けてい
るので、有効歯幅を減少させず、かつ全体の歯幅を増大
させずに、チャンファ角を小さくすることができる。従
って、その結果、有効に押し分け力を発生させることが
できるようになる。
In this gear mechanism, the gears 21 and 23 are
Since the chamfer ridgeline 28 provided on the end face of the chamfer is formed in an arc shape, even if there is a slight error in the shape of the chamfer ridgeline 28, the chamfer ridgeline 28 first comes into point contact with each other somewhere. Therefore, there is no possibility that the chamfer ridgeline 28 will first hit the cut surface 29.
Further, since the chamfer 27 is provided with the cut surface 29 at the root portion thereof, the chamfer angle can be reduced without reducing the effective tooth width and increasing the entire tooth width. Therefore, as a result, the pushing force can be effectively generated.

【0026】[0026]

【発明の効果】以上説明したように、本発明の選択摺動
式歯車装置によれば、歯車の歯部端面に設けたチャンフ
ァの歯元部をカットしているので、全体の歯幅を増大さ
せず、かつ有効歯幅を減少させずに、チャンファ角を小
さくすることができる。又、歯元部をカットするもの
の、チャンファ稜線を凸曲線状に形成したので、チャン
ファ稜線が点接触するようになり、製造誤差の影響で最
初にカット部分にチャンファ稜線が当たることをなくす
ことができる。その結果、有効に押し分け力を発生させ
ることができ、噛み合いの容易化を図ることができる。
As described above, according to the selective sliding type gear device of the present invention, since the root portion of the chamfer provided on the end surface of the tooth portion of the gear is cut, the overall tooth width is increased. The chamfer angle can be reduced without increasing the effective tooth width. Also, although the root portion is cut, the chamfer ridgeline is formed in a convex curve shape, so the chamfer ridgeline comes into point contact, and it is possible to prevent the chamfer ridgeline from hitting the cut portion first due to the influence of manufacturing error. it can. As a result, the pushing force can be effectively generated, and the meshing can be facilitated.

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

【図1】本発明の一実施例の要部側面図FIG. 1 is a side view of an essential part of an embodiment of the present invention.

【図2】本発明の一実施例の歯車の歯部拡大側面図FIG. 2 is an enlarged side view of the tooth portion of the gear according to the embodiment of the present invention.

【図3】本発明の一実施例の歯車の歯部拡大平面図FIG. 3 is an enlarged plan view of a tooth portion of a gear according to an embodiment of the present invention.

【図4】従来の選択摺動式歯車機構を含む変速装置の側
面図
FIG. 4 is a side view of a transmission including a conventional selective sliding gear mechanism.

【図5】従来の選択摺動式歯車機構の歯車の一例を示す
斜視図
FIG. 5 is a perspective view showing an example of gears of a conventional selective sliding gear mechanism.

【図6】同歯車の歯部端面部分の拡大斜視図FIG. 6 is an enlarged perspective view of a tooth end face portion of the gear.

【図7】図6の歯部端面の改良予想図FIG. 7 is an improved expected view of the tooth end surface of FIG.

【図8】図7の歯部端面構造を持つ歯車の理想的な噛み
合い状態を示す側面図
8 is a side view showing an ideal meshing state of the gear having the tooth end surface structure of FIG. 7.

【図9】図7の歯部端面構造を持つ歯車の現実的な噛み
合い状態を誇張して示す側面図
9 is an exaggerated side view showing a realistic meshing state of the gear having the tooth end face structure of FIG. 7. FIG.

【符号の説明】[Explanation of symbols]

21…固定歯車 23…摺動歯車 24…歯 25…歯面 26…面 27…チャンファ 28…チャンファ稜線 29…カット面 21 ... Fixed gear 23 ... Sliding gear 24 ... Tooth 25 ... Tooth surface 26 ... Surface 27 ... Chamfer 28 ... Chamfer ridgeline 29 ... Cut surface

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】固定歯車と、軸線方向に摺動させられて前
記固定歯車と選択的に噛合する摺動歯車とを備え、噛み
合い開始時に相対する前記両歯車の歯部端面に、該歯部
端面の歯厚方向略中央から両側の歯面に向かって傾斜し
た一対の面からなるチャンファが形成された選択摺動式
歯車装置において、 前記チャンファの稜線を凸曲線状に形成すると共に、チ
ャンファの歯元部を歯車の軸線と略直交する面でカット
したことを特徴とする選択摺動式歯車装置。
1. A toothed portion provided with a fixed gear and a sliding gear which is slid in an axial direction and selectively meshes with the fixed gear, the tooth portions being provided on the end faces of the tooth portions of the both gears facing each other at the start of the meshing. In a selective sliding gear device in which a chamfer consisting of a pair of surfaces inclined toward the tooth flanks on both sides from substantially the center in the tooth thickness direction of the end face is formed, a ridgeline of the chamfer is formed in a convex curve shape, and A selective sliding type gear device characterized in that a root portion is cut along a surface substantially orthogonal to the axis of the gear.
JP05190201A 1993-07-30 1993-07-30 Selective sliding gear Expired - Fee Related JP3079458B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05190201A JP3079458B2 (en) 1993-07-30 1993-07-30 Selective sliding gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05190201A JP3079458B2 (en) 1993-07-30 1993-07-30 Selective sliding gear

Publications (2)

Publication Number Publication Date
JPH0742810A true JPH0742810A (en) 1995-02-10
JP3079458B2 JP3079458B2 (en) 2000-08-21

Family

ID=16254142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP05190201A Expired - Fee Related JP3079458B2 (en) 1993-07-30 1993-07-30 Selective sliding gear

Country Status (1)

Country Link
JP (1) JP3079458B2 (en)

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US9169621B2 (en) 2010-03-09 2015-10-27 Kabushiki Kaisha Kobe Seiko Sho Hydraulic tubing support structure and operating machine provided therewith
CN112696439A (en) * 2020-12-25 2021-04-23 中国船舶重工集团公司第七0三研究所 Tooth clutch with high meshing success probability

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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