JP3543872B2 - Tooth plate for seat reclining device and method of manufacturing the same - Google Patents

Tooth plate for seat reclining device and method of manufacturing the same Download PDF

Info

Publication number
JP3543872B2
JP3543872B2 JP17007995A JP17007995A JP3543872B2 JP 3543872 B2 JP3543872 B2 JP 3543872B2 JP 17007995 A JP17007995 A JP 17007995A JP 17007995 A JP17007995 A JP 17007995A JP 3543872 B2 JP3543872 B2 JP 3543872B2
Authority
JP
Japan
Prior art keywords
tooth
concave portion
plate
peripheral surface
reclining device
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 - Fee Related
Application number
JP17007995A
Other languages
Japanese (ja)
Other versions
JPH0919338A (en
Inventor
雅清 大矢
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.)
Fuji Kiko Co Ltd
Original Assignee
Fuji Kiko 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
Priority to JP17007995A priority Critical patent/JP3543872B2/en
Application filed by Fuji Kiko Co Ltd filed Critical Fuji Kiko Co Ltd
Priority to KR1019960023201A priority patent/KR100197921B1/en
Priority to US08/668,810 priority patent/US5813724A/en
Priority to DE69617107T priority patent/DE69617107T2/en
Priority to DE69630475T priority patent/DE69630475T2/en
Priority to EP96110177A priority patent/EP0749865B1/en
Priority to EP00122629A priority patent/EP1068987B1/en
Priority to EP00122628A priority patent/EP1068986B1/en
Priority to DE69633309T priority patent/DE69633309T2/en
Publication of JPH0919338A publication Critical patent/JPH0919338A/en
Priority to US08/964,400 priority patent/US6014806A/en
Application granted granted Critical
Publication of JP3543872B2 publication Critical patent/JP3543872B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

【0001】
【発明の属する技術分野】
この発明は、内周面に歯部を形成した凹部を有するシートリクライニング装置のツースプレート及びその製造方法に関し、凹部の強度及び外観の見栄えを向上させることを目的とするものである。
【0002】
【従来の技術】
エンボス加工(又は成形)はワーク板をダイに載置してパンチで押圧すると下側(ダイ側)に凸部が形成されるという金属加工方法であり、この場合、上側には凹部が形成されることになる。
【0003】
このエンボス加工と同時に、例えばシートリクライニング装置のツースプレートのように、前記凹部の内周面に歯部を形成する必要があれば、凹部に押し込むパンチの外周面と前記凸部を受けるダイの内周面にそれぞれ歯型を形成して凹部の内周面と凸部の外周面に歯部を刻設するエンボス歯形構造が提供されている(特開平6−137407号公報参照)。
【0004】
【発明が解決しようとする課題】
しかしながら、従来のエンボス加工部は、図7に示したように、歯型50の下端エッジを切欠しないピン角51を有するパンチ52で押し込んだ凹部53の底部54がワーク板55の上下面とほぼ平行に押し込まれ、図8に示すように、その凹部53とワーク板55との継ぎ部分56が肉薄となっているのが通例であるから、例えば、所謂内歯式のシートリクライニング装置のツースプレートの場合、歯部57に大荷重が掛かった場合、ピン角51で形成された継ぎ部分56に応力が集中するという強度上の問題があるため、ワーク板55の板厚を強度上必要とされる寸法にすれば、ワーク板全体が非常に厚くなり、コスト高となる。
【0005】
また、従来のエンボス加工によれば、仕上げ打ち抜き工程によって形成された歯部は、その歯先において、自由端面から出発して結合箇所へ向かう打ち抜きによる材料の連れ込み部を有しており、したがって歯部は、その端面側において歯先範囲で僅かに傾斜若しくは円くされて見える。したがって、仕上げ打ち抜き工程によって生じる打ち抜きによる材料の連れ込み(だれ)は、有効な歯部の幅を減少すると云う問題がある(実開昭60−14817号公報参照)。
【0006】
しかも、従来のエンボス歯形構造では、凹部53の内周面に歯部57を刻設する場合には、図8において、パンチ52の外周面とダイ58の穴部59の内周面に必ず歯型50,60を形成してあるため、凹部53の外周面にエンボス歯形61が刻設される。そのため、内周面を歯部57として使用すべき場合に外周面のエンボス歯形61を間違えて組み付けることも有り得るために紛らわしいことがある。
【0007】
また、外周面にも歯部37aが形成されていることは、外観的な見栄えが良好でない。したがって、本来不要な部分であるために、構造的に省略できれば一層好ましいものである。しかし、従来の製法による限りにおいては、それは困難であり、また、従来において、不要な外周面のエンボス歯形を省略したもの及びその製法は存しない。
【0008】
そこで、この発明は、上記事情に鑑みて、内周面に歯部を有する凹部を形成するに当たり、該凹部と本体との継ぎ部分の強度を向上させるとともに、不要な外周面のエンボス歯形を省略して外観的見栄えを向上させるシートリクライニング装置のツースプレート及びその製造方法を提供する。
【0009】
【課題を解決するための手段】
この発明にかかるシートリクライニング装置のツースプレートは、ベースプレートと、該ベースプレートのセンターシャフトに回動可能に軸支したツースプレートと、該ツースプレートに係脱するツース部材とからなるシートリクライニング装置において、前記ツースプレートには第1の凹部を形成するとともに、該第1の凹部の内周面に歯部を形成し、さらに、該歯部の根元には円弧面を有する第2の凹部が形成され、かつ、該第2の凹部に相対向する外周面には表面平滑な円弧面を形成して前記第1の凹部と前記ツースプレートの継ぎ部分を形成してなることを特徴とする。
【0010】
また、この発明にかかるシートリクライニング装置のツースプレートの製造方法は、ダイのエッジ部を円弧断面形状としてそのダイにワーク板を載置し、外周面に歯型を形成しその歯型の下端部を断面円弧形の凸部に形成してなるパンチで前記ワーク板を押圧することにより第1の凹部を形成し、さらに、該第1の凹部の内周面に根元が円弧面を有する第2の凹部を形成した歯部を形成することにより、前記ワーク板と前記第1の凹部の継ぎ部分を増肉し、さらに、該第1の凹部の外周面を円弧面を有する表面平滑となすことを特徴とする。
【0011】
上記構成により、 第1の凹部とツースプレートとの継ぎ部分が、断面円弧形の凸部が形成されたパンチと、エッジ部が円弧断面形状のダイで押圧成形されるために、内外表面は断面円弧形に成形されて増肉鍛造されるために、その強度が向上する。
【0012】
【発明の実施の形態】
以下にこの発明の実施例を図に基づき説明する。図1,2に示すように、ツースプレート1に第1の凹部2が形成され、この凹部2の内周面に歯部3が刻設され、凹部2とツースプレート1との継ぎ部分4は、内外共にアール付け(図2中R矢示参照)されている。継ぎ部分4の外周面及び凸部の外周面は平滑な曲面であり、歯部3と相対すべき歯部がその曲面に刻設されていないことを特徴とするエンボス歯形構造である。第1の凹部2にはシートリクライニング装置を形成するとき、センターシャフトを挿通するための軸孔1aと渦巻ばねの突起部を形成するためのエンボス部1bが形成され、また、頭部にはアームと連結するための連結孔1cが穿設されている。
【0013】
したがって、歯部3の根元は、図3に示すように、凹部2の内底面に歯部3の高さの範囲内で略扇形状に円弧面5を有する第2の凹部6が形成されている。円弧面5はエンボス歯型を形成するパンチ11(図4参照)に形成した断面円弧形の凸部15(図4参照)により形成される。そのため、歯部3の根元は円弧面5を形成することにより応力集中が防げるため、歯部3の根元が補強されるとともに、この円弧面5,5aが継ぎ部分4を形成することで同様に応力集中が防げるため、継ぎ部分4が補強されることになる。
【0014】
図3に示すように、凹部2の内底面には円弧面5から所定幅で環状の周溝からなる第2の凹部6が形成されている。凹部2の内底面には、歯部3に噛合する歯部7を有するツース部材8等が載置され、そのツース部材8が水平方向へ移動して歯部3,7の噛合又はその解除がなされる。このとき、ツース部材8の歯部7は円弧面5の近くまで噛合する。
【0015】
ツース部材8は、図6に示すように、シートリクライニング装置30のロック機構31を形成するものであり、ベースプレート32のガイド部33,34に径方向へ摺動可能に係合し、ツースプレート1はシートリクライニング装置30のシートバック(図示略)に固定するアーム35と連結孔1cに挿通するピン37で連結され、ベースプレート32にセンターシャフト38が挿通する軸孔1aを介して回転可能に軸着されるものである。したがって、歯部3を形成した第1の凹部2の内周面はセンターシャフト38から一定の半径にある。
【0016】
ロック機構31は、ツース部材8にレバー部39を形成し、そのレバー部39と係脱するレバー部40を有するカム部材41及び操作レバー42をセンターシャフト38に重ねてそれぞれ回動可能に軸支し、カム部材39と操作レバー42をエンボスとそれが係合する穴43で一体回転可能に連結し、操作レバー42とベースプレート32に突設した突起部44との間にリターンばね45が弾装されている。また、ツースプレート1にはセンターシャフト38に内端部を係着した渦巻きばね46の外端部を係止するための突起部1bが形成されている。48はセンターシャフト38に嵌合してツースプレート1の外表面に接するワッシャーである。49はベースプレート32のセンターシャフト38を中心とする円弧状の頭部をツースプレート1に押圧するための押え部材である。
【0017】
そこで、上記エンボス歯形構造の製造方法に付き説明する。このエンボス歯形構造は、図4に示すように、ワーク板9を、ダイ10の上に載置してパンチ11をワーク板9に押し付けカウンタープレート13に押し込んで形成するものである。パンチ11は歯部3を刻設するための歯型部16が外周面に形成されており、その歯型部16の凸部15は断面円弧形で、しかも第2の凹部6を形成するためにパンチ底部17から突出している。18はパンチ11の成形を補助するための押えブロックである。
【0018】
この凸部15はダイ10の内周面12側のエッジ部に形成された円弧断面部14に対向しており、これらにより継ぎ部分4が形成される。したがって、第1の凹部2の内周面の肉は歯型部16で凹部2の外周方向へ押し込まれて歯部3を形成し、歯部3を形成した残余の肉と凸部15により押し込められた肉は継ぎ部分4に移動して凸部15にて円弧面5を形成するるとともに、円弧断面部14にて表面平滑な円弧面5aを形成する。したがって、継ぎ部分4の肉が増肉かつ鍛造されて強度が向上するというものである。
【0019】
なお、歯部3に生じる連れ込み(だれ)の部分への肉の流量を増やすために、歯部3の外周面付近をワーク板1aの肉厚方向に押し込むことも適切である。すなわち、図5に示すように、パンチ11の外周面側で加圧ブロック20をワーク板1aにパンチ11とともに打設する。この加圧ブロック20の底面には歯部3の近傍に位置する突起部21を形成してあり、この突起部21は歯部3側が傾斜してテーパー面を形成し、他側は垂直面に形成されている。
【0020】
したがって、加圧ブロック20がワーク板1aを打設すると、ツースプレートの歯部外周に歯部側への傾斜部を有する溝22が形成される。そして、突起部21にて押し込まれたワーク板1aの肉により歯部3が形成される部分が増肉されるため、パンチ11により歯部3を形成しても連れ込み(だれ)を防止することができる。したがって、歯部3の連れ込みを防止することができるので、歯部3の噛合代を十分に確保することができる。
【0021】
なお、上記実施例にあっては、エンボス歯形構造を例として説明したが、歯形3を刻設することなく、単なるエンボス凹部2を形成する場合にあっても、エンボス凹部2の底部とワーク板1との継ぎ部分4の強度を高めることに応用できることはいうまでもないことである。
【0022】
【発明の効果】
以上説明したこの発明によれば、ツースプレートとそれに形成された第1の凹部との継ぎ部分が外周、内周共に円弧面を形成しているので、応力集中を防止することができて強度向上をもたらす。同様に、第1の凹部に形成された歯部は根元が断面円弧形であるので、歯部の強度が向上する。また、強度向上によりツースプレートの肉厚を薄くして足り、コスト低減を図ることができる。
【0023】
また、ツースプレートの歯部外周に歯部側へ傾斜部を有する溝が形成されることで、歯部の連れ込み(だれ)を防止することができる。
【0024】
さらに、エンボス凹部の外周面、すなわちエンボス凸部の外周面には歯形が一切形成されておらず、平滑な曲面であり、したがって、外観的見栄えが向上する。 加えて、パンチは歯型部の先が断面円弧形でアール付けされているから、歯型部の先に集中すべき応力が分散されるために、刃先の摩耗が低減し、パンチの耐久性が向上する。
【図面の簡単な説明】
【図1】この発明の実施例を示す内側面斜視図(A)及び外側面斜視図
【図2】図1に示すツースプレートの内側正面図(A)及びその縦断側面図(B)
【図3】図2のツースプレートの要部断面図
【図4】ツースプレートの製法説明図
【図5】他のツースプレートの製法説明図
【図6】内歯方式のシートリクライニング装置の正面図
【図7】従来のエンボス歯形の製法説明図
【図8】従来のエンボス歯形の要部断面図
【符号の説明】
1…ツースプレート
2…第1の凹部
3…歯部
4…継ぎ部分
5…円弧面
6…第2の凹部
10…ダイ
11…パンチ
14…円弧断面部
15…凸部
16…歯型部
18…押えブロック
20…加圧ブロック
21…突起部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tooth plate of a seat reclining device having a concave portion having a tooth portion formed on an inner peripheral surface and a method of manufacturing the same, and it is an object of the present invention to improve the strength and appearance of the concave portion.
[0002]
[Prior art]
Embossing (or forming) is a metal working method in which a work plate is placed on a die and pressed by a punch to form a convex portion on the lower side (die side). In this case, a concave portion is formed on the upper side. Will be.
[0003]
Simultaneously with the embossing, if it is necessary to form teeth on the inner peripheral surface of the concave portion, for example, a tooth plate of a seat reclining device, the outer peripheral surface of the punch to be pressed into the concave portion and the die for receiving the convex portion are formed. There has been provided an embossed tooth profile structure in which tooth molds are formed on the peripheral surface, and teeth are engraved on the inner peripheral surface of the concave portion and the outer peripheral surface of the convex portion (see JP-A-6-137407).
[0004]
[Problems to be solved by the invention]
However, in the conventional embossed portion, as shown in FIG. 7, the bottom 54 of the concave portion 53 pushed by a punch 52 having a pin angle 51 which does not cut off the lower end edge of the tooth mold 50 is almost flush with the upper and lower surfaces of the work plate 55. Since the joint portion 56 between the recess 53 and the work plate 55 is generally thin as shown in FIG. 8, for example, a tooth plate of a so-called internal tooth type seat reclining device is used. In the case of (1), when a large load is applied to the tooth portion 57, there is a problem in strength that stress concentrates on the joint portion 56 formed by the pin angle 51. Therefore, the thickness of the work plate 55 is required in terms of strength. If the dimensions are too large, the entire work plate will be very thick and the cost will be high.
[0005]
Further, according to the conventional embossing, the tooth portion formed by the finish punching process has, at the tip of the tooth, an entrainment portion of the material by punching starting from the free end face toward the joining point, and thus the tooth portion is formed. The part appears to be slightly inclined or rounded in the tip area on its end face side. Therefore, there is a problem that the entrainment of the material due to the punching caused by the finish punching process reduces the effective tooth width (see Japanese Utility Model Application Laid-Open No. 60-17817).
[0006]
In addition, in the conventional embossed tooth structure, when the tooth portion 57 is carved on the inner peripheral surface of the concave portion 53, the teeth must be formed on the outer peripheral surface of the punch 52 and the inner peripheral surface of the hole portion 59 of the die 58 in FIG. Since the molds 50 and 60 are formed, an embossed tooth profile 61 is engraved on the outer peripheral surface of the concave portion 53. Therefore, when the inner peripheral surface is to be used as the tooth portion 57, the embossed tooth profile 61 on the outer peripheral surface may be erroneously assembled, which may be confusing.
[0007]
Further, the fact that the teeth 37a are also formed on the outer peripheral surface is not good in appearance. Therefore, since it is an unnecessary part, it is more preferable if it can be omitted structurally. However, this is difficult as far as the conventional manufacturing method is used, and there is no conventional method in which an unnecessary embossed tooth profile on the outer peripheral surface is omitted and its manufacturing method does not exist.
[0008]
In view of the above circumstances, the present invention improves the strength of a joint portion between the concave portion and the main body when forming a concave portion having a tooth portion on the inner peripheral surface, and omits unnecessary embossed tooth profile on the outer peripheral surface. The present invention provides a tooth plate for a seat reclining device and a method for manufacturing the same, which improve the appearance and appearance.
[0009]
[Means for Solving the Problems]
The tooth reclining device according to the present invention is a seat reclining device including a base plate, a tooth plate rotatably supported on a center shaft of the base plate, and a tooth member engaged with and disengaged from the tooth plate. A first recess is formed in the tooth plate, a tooth is formed on the inner peripheral surface of the first recess, and a second recess having an arcuate surface is formed at the root of the tooth. Further, a smooth arcuate surface is formed on an outer peripheral surface opposed to the second concave portion to form a joint portion between the first concave portion and the tooth plate.
[0010]
Further, a method of manufacturing a tooth plate of a seat reclining device according to the present invention includes the steps of: placing an edge portion of a die in an arc-shaped cross-section, placing a work plate on the die, forming a tooth shape on an outer peripheral surface, and forming a lower end portion of the tooth shape. The first concave portion is formed by pressing the work plate with a punch formed with a convex portion having an arcuate cross-section, and a first concave portion having a circular arc surface at the inner peripheral surface of the first concave portion. By forming the teeth having the two concave portions, the joint portion between the work plate and the first concave portion is increased in thickness, and further, the outer peripheral surface of the first concave portion is made smooth with a circular arc surface. It is characterized by the following.
[0011]
According to the above configuration, the joint between the first concave portion and the tooth plate is formed by pressing a punch having an arc-shaped convex portion and an edge portion by a die having an arc-shaped cross section. Since it is formed into an arc-shaped cross section and forged and thickened, its strength is improved.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a first concave portion 2 is formed in a tooth plate 1, a tooth portion 3 is carved on the inner peripheral surface of the concave portion 2, and a joint portion 4 between the concave portion 2 and the tooth plate 1 is formed. , Both inside and outside (see the arrow R in FIG. 2). The outer peripheral surface of the joint portion 4 and the outer peripheral surface of the convex portion are smooth curved surfaces, and the tooth portion to be opposed to the tooth portion 3 is not embossed on the curved surface. When the seat reclining device is formed, the first recess 2 is formed with a shaft hole 1a for inserting a center shaft and an embossed portion 1b for forming a projection of a spiral spring. A connection hole 1c is formed for connection with the connection.
[0013]
Therefore, as shown in FIG. 3, a second concave portion 6 having a substantially fan-shaped arc surface 5 in the range of the height of the tooth portion 3 is formed on the inner bottom surface of the concave portion 2 at the base of the tooth portion 3. I have. The arc surface 5 is formed by a convex portion 15 (see FIG. 4) having an arc cross section formed on a punch 11 (see FIG. 4) forming an embossed tooth form. Therefore, since the root of the tooth portion 3 can prevent stress concentration by forming the arc surface 5, the root of the tooth portion 3 is reinforced and the arc surface 5, 5 a forms the joint portion 4. Since the concentration of stress can be prevented, the joint portion 4 is reinforced.
[0014]
As shown in FIG. 3, a second concave portion 6 is formed on the inner bottom surface of the concave portion 2 and has a predetermined width from the circular arc surface 5 and has an annular peripheral groove. On the inner bottom surface of the concave portion 2, a tooth member 8 and the like having a tooth portion 7 that meshes with the tooth portion 3 are placed, and the tooth member 8 moves in the horizontal direction to engage or release the tooth portions 3 and 7. Done. At this time, the tooth portions 7 of the tooth member 8 mesh with each other up to the vicinity of the arc surface 5.
[0015]
As shown in FIG. 6, the tooth member 8 forms a lock mechanism 31 of the seat reclining device 30, and engages with the guide portions 33 and 34 of the base plate 32 so as to be slidable in the radial direction. Is connected to an arm 35 fixed to a seat back (not shown) of the seat reclining device 30 by a pin 37 inserted into the connection hole 1c, and is rotatably mounted on the base plate 32 through a shaft hole 1a through which a center shaft 38 is inserted. Is what is done. Therefore, the inner peripheral surface of the first concave portion 2 in which the teeth 3 are formed has a constant radius from the center shaft 38.
[0016]
The lock mechanism 31 has a lever portion 39 formed on the tooth member 8, a cam member 41 having a lever portion 40 that engages with and disengages from the lever portion 39, and an operation lever 42 that is superimposed on the center shaft 38 and pivotally supported. The cam member 39 and the operation lever 42 are integrally rotatably connected to each other by an emboss and a hole 43 engaged with the emboss. A return spring 45 is elastically mounted between the operation lever 42 and a projection 44 projecting from the base plate 32. Have been. Further, the tooth plate 1 is formed with a projection 1b for locking the outer end of the spiral spring 46 whose inner end is engaged with the center shaft 38. Reference numeral 48 denotes a washer that fits on the center shaft 38 and contacts the outer surface of the tooth plate 1. Reference numeral 49 denotes a pressing member for pressing an arc-shaped head centered on the center shaft 38 of the base plate 32 against the tooth plate 1.
[0017]
Therefore, a method of manufacturing the above-described embossed tooth profile structure will be described. As shown in FIG. 4, this embossed tooth profile structure is formed by placing a work plate 9 on a die 10 and pressing a punch 11 against the work plate 9 and pressing it into a counter plate 13. The punch 11 has a toothed portion 16 for engraving the toothed portion 3 formed on the outer peripheral surface, and the convex portion 15 of the toothed portion 16 has an arc-shaped cross section and forms the second concave portion 6. Therefore, it projects from the punch bottom 17. Reference numeral 18 denotes a holding block for assisting the forming of the punch 11.
[0018]
The convex portion 15 is opposed to the arcuate cross-sectional portion 14 formed on the edge portion on the inner peripheral surface 12 side of the die 10, and the joint portion 4 is formed by these. Therefore, the flesh on the inner peripheral surface of the first concave portion 2 is pushed toward the outer peripheral direction of the concave portion 2 by the tooth mold portion 16 to form the tooth portion 3, and is pushed in by the remaining flesh formed with the tooth portion 3 and the convex portion 15. The obtained meat moves to the joint portion 4 to form the arc surface 5 at the convex portion 15 and also forms the arc surface 5a having a smooth surface at the arc cross-sectional portion 14. Therefore, the thickness of the joint portion 4 is increased and forged, so that the strength is improved.
[0019]
In addition, in order to increase the flow rate of the meat to the entrained portion of the tooth portion 3, it is also appropriate to push the vicinity of the outer peripheral surface of the tooth portion 3 in the thickness direction of the work plate 1a. That is, as shown in FIG. 5, the pressing block 20 is driven together with the punch 11 on the work plate 1a on the outer peripheral surface side of the punch 11. A projection 21 is formed on the bottom surface of the pressure block 20 in the vicinity of the teeth 3. The projection 21 has a tapered surface on the tooth 3 side inclined, and a vertical surface on the other side. Is formed.
[0020]
Therefore, when the pressing block 20 drives the work plate 1a, a groove 22 having an inclined portion toward the tooth portion is formed around the tooth portion of the tooth plate. Since the portion where the teeth 3 are formed is increased by the flesh of the work plate 1a pushed in by the projections 21, even if the teeth 3 are formed by the punch 11, dragging-in (drip) is prevented. Can be. Therefore, it is possible to prevent the teeth 3 from being brought in, and it is possible to sufficiently secure the meshing allowance of the teeth 3.
[0021]
In the above embodiment, the embossed tooth structure has been described as an example. However, even when the embossed concave portion 2 is formed without engraving the tooth profile 3, the bottom of the embossed concave portion 2 and the work plate may be formed. It goes without saying that the present invention can be applied to increase the strength of the joint portion 4 with 1.
[0022]
【The invention's effect】
According to the present invention described above, since the joint portion between the tooth plate and the first recess formed in the outer periphery and the inner periphery form an arcuate surface, stress concentration can be prevented and strength can be improved. Bring. Similarly, since the root of the tooth formed in the first recess has an arc-shaped cross section, the strength of the tooth is improved. Further, it is sufficient to reduce the thickness of the tooth plate by improving the strength, and it is possible to reduce the cost.
[0023]
In addition, by forming a groove having an inclined portion toward the tooth portion on the outer periphery of the tooth portion of the tooth plate, it is possible to prevent the tooth portion from being dragged in.
[0024]
Furthermore, no tooth profile is formed on the outer peripheral surface of the embossed concave portion, that is, the outer peripheral surface of the embossed convex portion, and the outer peripheral surface is a smooth curved surface, so that the appearance is improved. In addition, since the tip of the tooth profile is rounded at the tip of the tooth profile, stress that must be concentrated at the tip of the tooth profile is dispersed, reducing wear on the cutting edge and durability of the punch. The performance is improved.
[Brief description of the drawings]
FIG. 1 is a perspective view of an inner side and an outer side showing an embodiment of the present invention; FIG. 2 is an inner front view of the tooth plate shown in FIG.
FIG. 3 is a sectional view of a main part of the tooth plate of FIG. 2; FIG. 4 is an explanatory view of a manufacturing method of a tooth plate; FIG. 5 is an explanatory view of a manufacturing method of another tooth plate; FIG. FIG. 7 is an explanatory view of a method of manufacturing a conventional embossed tooth profile. FIG. 8 is a sectional view of a main part of a conventional embossed tooth profile.
DESCRIPTION OF SYMBOLS 1 ... Tooth plate 2 ... First concave part 3 ... Teeth part 4 ... Joint part 5 ... Arc surface 6 ... Second concave part 10 ... Die 11 ... Punch 14 ... Arc cross section 15 ... Convex part 16 ... Tooth mold part 18 ... Holding block 20 ... Pressing block 21 ... Protrusion

Claims (5)

ベースプレートと、該ベースプレートのセンターシャフトに回動可能に軸支したツースプレートと、該ツースプレートに係脱するツース部材とからなるシートリクライニング装置において、前記ツースプレートには第1の凹部を形成するとともに、該第1の凹部の内周面に歯部を形成し、さらに、該歯部の根元には円弧面を有する第2の凹部が形成され、かつ、該第2の凹部に相対向する外周面には表面平滑な円弧面を形成して前記第1の凹部と前記ツースプレートの継ぎ部分を形成したことを特徴とするシートリクライニング装置のツースプレート。In a seat reclining device comprising a base plate, a tooth plate rotatably supported on a center shaft of the base plate, and a tooth member engaged with and disengaged from the tooth plate, a first recess is formed in the tooth plate. A tooth portion is formed on an inner peripheral surface of the first concave portion, and a second concave portion having an arcuate surface is formed at a root of the tooth portion, and an outer peripheral portion facing the second concave portion is formed. A tooth plate for a seat reclining device, wherein a smooth arcuate surface is formed on a surface to form a joint between the first concave portion and the tooth plate. 第1の凹部の内周面に形成された歯部に相対向する該第1の凹部の外周面が表面平滑であることを特徴とする請求項1記載のシートリクライニング装置のツースプレート。The tooth plate for a seat reclining device according to claim 1, wherein the outer peripheral surface of the first concave portion facing the tooth portion formed on the inner peripheral surface of the first concave portion has a smooth surface. ツースプレートの歯部外周に歯部側へ傾斜部を有する溝を設けたことを特徴とする請求項1又は2記載のシートリクライニング装置のツースプレート。3. A tooth plate for a seat reclining device according to claim 1, wherein a groove having an inclined portion is provided on the outer periphery of the tooth portion of the tooth plate. ダイのエッジ部を円弧断面形状としてそのダイにワーク板を載置し、外周面に歯型を形成しその歯型の下端部を断面円弧形の凸部に形成してなるパンチで前記ワーク板を押圧することにより第1の凹部を形成し、さらに、該第1の凹部の内周面に根元が円弧面を有する第2の凹部を形成した歯部を形成することにより、前記ワーク板と前記第1の凹部の継ぎ部分を増肉し、さらに、該第1の凹部の外周面を円弧面を有する表面平滑となすことを特徴とするシートリクライニング装置ツースプレートの製造方法。A work plate is placed on the die with the edge part of the die having an arc cross-sectional shape, a tooth is formed on the outer peripheral surface, and the lower end of the tooth is formed into a convex part having an arc-shaped cross section. The work plate is formed by pressing a plate to form a first concave portion, and further forming a second concave portion having an arcuate base at an inner peripheral surface of the first concave portion. And a joint portion between the first concave portion and the first concave portion, and the outer peripheral surface of the first concave portion has a smooth surface having a circular arc surface. パンチとともに歯部側へ傾斜する傾斜面を有する凸部が形成された加圧ブロックをワークに打設してその打設した部位の肉を歯部側へ移動させることを特徴とする請求項4記載のシートリクライニング装置のツースプレートの製造方法。5. The punching device according to claim 4, wherein a pressing block having a convex portion having an inclined surface inclined toward the tooth portion together with the punch is cast on the workpiece, and the meat at the portion where the pressing is performed is moved toward the tooth portion. A manufacturing method of a tooth plate of the seat reclining device according to the above.
JP17007995A 1995-06-23 1995-07-06 Tooth plate for seat reclining device and method of manufacturing the same Expired - Fee Related JP3543872B2 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
JP17007995A JP3543872B2 (en) 1995-07-06 1995-07-06 Tooth plate for seat reclining device and method of manufacturing the same
DE69633309T DE69633309T2 (en) 1995-06-23 1996-06-24 Adjustable swivel fitting for reclining seats
DE69617107T DE69617107T2 (en) 1995-06-23 1996-06-24 Adjustable swivel fitting for reclining seats
DE69630475T DE69630475T2 (en) 1995-06-23 1996-06-24 Adjustable swivel fitting for reclining seats
EP96110177A EP0749865B1 (en) 1995-06-23 1996-06-24 Adjustable hinge mount for reclinable seat
EP00122629A EP1068987B1 (en) 1995-06-23 1996-06-24 Adjustable hinge mount for reclinable seat
KR1019960023201A KR100197921B1 (en) 1995-06-23 1996-06-24 Adjustable hinge mount for reclinable seat
US08/668,810 US5813724A (en) 1995-06-23 1996-06-24 Adjustable hinge mount for reclinable seat
EP00122628A EP1068986B1 (en) 1995-06-23 1996-06-24 Adjustable hinge mount for reclinable seat
US08/964,400 US6014806A (en) 1995-06-23 1997-11-04 Adjustable hinge mount for reclinable seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17007995A JP3543872B2 (en) 1995-07-06 1995-07-06 Tooth plate for seat reclining device and method of manufacturing the same

Publications (2)

Publication Number Publication Date
JPH0919338A JPH0919338A (en) 1997-01-21
JP3543872B2 true JP3543872B2 (en) 2004-07-21

Family

ID=15898259

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17007995A Expired - Fee Related JP3543872B2 (en) 1995-06-23 1995-07-06 Tooth plate for seat reclining device and method of manufacturing the same

Country Status (1)

Country Link
JP (1) JP3543872B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4131650B2 (en) * 2002-07-24 2008-08-13 シロキ工業株式会社 Reclining mechanism ratchet, manufacturing method thereof, and reclining mechanism ratchet forming mold

Also Published As

Publication number Publication date
JPH0919338A (en) 1997-01-21

Similar Documents

Publication Publication Date Title
US7634857B2 (en) Steel plate sprocket and method of producing same
JPS631895Y2 (en)
JP3543872B2 (en) Tooth plate for seat reclining device and method of manufacturing the same
US4839952A (en) Process for manufacturing toothed parts
JPH0276258U (en)
JPS5910859B2 (en) Slide fastener - pressing method for janitorial teeth
JP3070234U (en) Buckle for belt
JP4368518B2 (en) Rocker arm manufacturing method
JP3756968B2 (en) Half punching machine
JP3337963B2 (en) Hair stopper
JP2777633B2 (en) Saw blade engagement method for a replaceable blade saw
JPS6334534U (en)
JP3543888B2 (en) Base plate for seat reclining device and method of manufacturing the same
KR100397383B1 (en) method for manufacturing mini-anchor
JPH0340429Y2 (en)
JPH10108721A (en) Hair clip
JPS63116110U (en)
JPS62156938U (en)
JPH03116242U (en)
JPS5843858Y2 (en) Watch band piece connecting pin
JPH03110033A (en) Manufacture of cylindrical body having bottom and shoulder part
JPH07184711A (en) Manufacture of fastening metal fitting for accessory by brazing, welding or the like
JPH0215065U (en)
JPH01181927A (en) Plastic coupling method inter-metallic parts
JPS62101654U (en)

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20040308

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20040323

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20040326

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20040330

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090416

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100416

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100416

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110416

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120416

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130416

Year of fee payment: 9

LAPS Cancellation because of no payment of annual fees