JP2019196168A - Recliner shaft for car seat - Google Patents
Recliner shaft for car seat Download PDFInfo
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- JP2019196168A JP2019196168A JP2019088249A JP2019088249A JP2019196168A JP 2019196168 A JP2019196168 A JP 2019196168A JP 2019088249 A JP2019088249 A JP 2019088249A JP 2019088249 A JP2019088249 A JP 2019088249A JP 2019196168 A JP2019196168 A JP 2019196168A
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- Prior art keywords
- surface portion
- curved surface
- main body
- recliner shaft
- peripheral surface
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/22—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable
- B60N2/225—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms
- B60N2/2252—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the back-rest being adjustable by cycloidal or planetary mechanisms in which the central axis of the gearing lies inside the periphery of an orbital gear, e.g. one gear without sun gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/50—Positive connections
- F16C2226/80—Positive connections with splines, serrations or similar profiles to prevent movement between joined parts
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Seats For Vehicles (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
Abstract
Description
本発明は、リクライナーシャフトに関し、より詳細には車両シートの背もたれを一定の角度で回転及び固定できるようにする車両シート用リクライナーシャフトに関する。 The present invention relates to a recliner shaft, and more particularly, to a recliner shaft for a vehicle seat that enables the backrest of the vehicle seat to be rotated and fixed at a certain angle.
自動車の運転者及び搭乗者が座るシートには座板に対して背もたれを前、後方に角度調節できるリクライナーを設けることにより、自動車搭乗者が運転に適した搭乗姿勢を維持するかまたは任意の必要な角度に調節できるようになっている。 The seat on which the driver and passenger of the car sit is provided with a recliner that can adjust the angle of the backrest forward and backward with respect to the seat plate, so that the car rider can maintain a riding posture suitable for driving or is optional It can be adjusted to any angle.
このようなリクライナーは、坐板が設けられるクッションフレームと背もたれが設けれるシートバッグフレームが相互ヒンジ結合される両側部位に設けられており、両側のリクライナーはリクライナーシャフトで連結されて連動する。 Such a recliner is provided at both sides where a cushion frame provided with a seat plate and a seat bag frame provided with a backrest are hinged to each other, and the recliners on both sides are connected by a recliner shaft and interlocked.
搭乗者は手動または自動でリクライナーシャフトを回転させることによりリクライナーを作動させて背もたれの角度を調節できるが、リクライナーシャフトの回転時の背もたれが座板に対して前、後方向に回転する。 The passenger can operate the recliner by manually or automatically rotating the recliner shaft to adjust the angle of the backrest. However, when the recliner shaft rotates, the backrest rotates forward and backward with respect to the seat plate.
しかし、従来のリクライナーシャフトは、全体が中実の丸棒材質で構成されて重量が重すぎる問題があり、そのため、車両の軽量化の傾向に応じることができず、全体的な製造コストを上昇させる要因の一つである。 However, the conventional recliner shaft is composed of a solid round bar material and is too heavy. Therefore, the conventional recliner shaft cannot respond to the trend of reducing the weight of the vehicle and increases the overall manufacturing cost. This is one of the factors that cause
本発明は前述した問題点を解決するために案出されたものであり、中が空いた中空パイプ形態の車両シート用リクライナーシャフトを提供することに目的がある。 The present invention has been devised to solve the above-described problems, and an object thereof is to provide a recliner shaft for a vehicle seat in the form of a hollow pipe having a hollow space.
本発明の他の目的は、内部に中空が形成されて重量が軽くかつ製造コストを節減しながらも、十分なねじり強度を維持できる車両シート用リクライナーシャフトを提供することにある。 Another object of the present invention is to provide a recliner shaft for a vehicle seat that can maintain a sufficient torsional strength while having a hollow formed therein and being light in weight and reducing manufacturing costs.
前述した課題を解決するために、本発明は、中空パイプ形状の本体と、前記本体の外周面から半径方向の外側に突出形成され、前記本体の長手方向に沿って延長される７個のスプライン突起とを含み、前記７個のスプライン突起は、前記本体の周囲に沿って同じ角度で離隔形成され、前記本体の内周面は、円型断面で形成される車両シート用リクライナーシャフトを提供する。 In order to solve the above-described problems, the present invention includes a hollow pipe-shaped main body and seven splines that are formed to protrude radially outward from the outer peripheral surface of the main body and extend along the longitudinal direction of the main body. The seven spline protrusions are spaced apart at the same angle along the periphery of the main body, and the inner peripheral surface of the main body provides a vehicle seat recliner shaft having a circular cross section. .
本発明の一特徴によれば、前記スプライン突起は、前記本体の外周面から外側に向かって所定の曲率で突出する第１曲面部と、前記第１曲面部の端から傾斜して延長形成される第１傾斜面部と、前記第１傾斜面部の端から前記本体の外側に向かって膨らんで突出する第２曲面部と、前記第２曲面部の端から前記本体の外周面と平行に延長形成される延長部と、前記延長部の端から前記延長部に対して前記第２曲面部と対称形成される第３曲面部と、前記第３曲面部の端から前記延長部に対して前記第１傾斜面部と対称形成される第２傾斜面部と、前記第２傾斜面部の端から前記本体の外周面まで前記延長部に対して前記第１曲面部と対称形成される第４曲面部とを含み得る。 According to one aspect of the present invention, the spline protrusion is formed to extend from the outer peripheral surface of the main body to the outside with a predetermined curvature and to be inclined and extended from an end of the first curved surface portion. A first inclined surface portion, a second curved surface portion protruding from the end of the first inclined surface portion toward the outside of the main body, and extending from the end of the second curved surface portion in parallel with the outer peripheral surface of the main body. An extended portion, a third curved surface portion formed symmetrically with the second curved surface portion with respect to the extension portion from an end of the extension portion, and the third curved surface portion with respect to the extension portion from the end of the third curved surface portion. A second inclined surface portion formed symmetrically with one inclined surface portion, and a fourth curved surface portion formed symmetrically with the first curved surface portion with respect to the extension portion from an end of the second inclined surface portion to an outer peripheral surface of the main body. May be included.
本発明の他の特徴によれば、前記本体の外周面の直径を１０．３とする時、前記本体の内周面の直径は８．３であり、前記第１曲面部と前記第４曲面部の曲率半径は０．１〜０．４であり、前記第２曲面部と前記第３曲面部の曲率半径は０．３〜０．５であり、前記第１傾斜面の外側端と前記第２傾斜面の外側端との間の距離は２．０〜２．１であり得る。 According to another aspect of the present invention, when the diameter of the outer peripheral surface of the main body is 10.3, the diameter of the inner peripheral surface of the main body is 8.3, and the first curved surface portion and the fourth curved surface The radius of curvature of the portion is 0.1 to 0.4, the radius of curvature of the second curved surface portion and the third curved surface portion is 0.3 to 0.5, and the outer end of the first inclined surface and the The distance between the outer edge of the second inclined surface may be 2.0 to 2.1.
本発明のまた他の特徴によれば、前記本体の内周面から前記スプライン突起に各々対応して半径方向の外側に陥没形成される複数の溝部をさらに含み、前記溝部の両側壁は、本体の内周面から前記延長部の中間点方向に湾曲形成される第５曲面部と、前記本体の中心と前記延長部の中間点をつなぐ仮想の延長線を基準に前記第５曲面部と対称形成される第６曲面部とを含み得る。 According to still another aspect of the present invention, the apparatus further includes a plurality of groove portions that are recessed from the inner peripheral surface of the main body in a radial direction corresponding to the spline protrusions. A fifth curved surface portion that is curved from the inner peripheral surface of the extension portion toward the intermediate point of the extension portion, and a symmetric line with respect to the fifth curved surface portion with respect to a virtual extension line that connects the center of the main body and the intermediate point of the extension portion. And a sixth curved surface portion to be formed.
本発明のまた他の特徴によれば、前記第５曲面部は、前記第１曲面部と同じ曲率中心を有し、前記第６曲面部は、前記第４曲面部と同じ曲率中心を有し、前記第５曲面部と前記第６曲面部の曲率半径が１．１〜１．４であり得る。 According to still another aspect of the invention, the fifth curved surface portion has the same center of curvature as the first curved surface portion, and the sixth curved surface portion has the same center of curvature as the fourth curved surface portion. The curvature radii of the fifth curved surface portion and the sixth curved surface portion may be 1.1 to 1.4.
本発明のまた他の特徴によれば、ねじり強度１００Ｎ〜１２４Ｎを有するように塑性加工によって形成され得る。 According to still another aspect of the present invention, it may be formed by plastic working so as to have a torsional strength of 100N to 124N.
本発明のまた他の特徴によれば、前記本体の延長部が内接するように描かれる仮想円の直径を１０．０ｍｍ〜１４．０ｍｍとする時、前記本体の外周面の直径は７．２ｍｍ〜１２．４ｍｍであり、前記第１曲面部と前記第４曲面部の曲率半径は０．１ｍｍ〜０．４ｍｍであり、前記第２曲面部と前記第３曲面部の曲率半径は０．３ｍｍ〜０．５ｍｍであり、前記第１傾斜面の外側端と前記第２傾斜面の外側端との間の距離は２．０ｍｍ〜２．１ｍｍであり得る。 According to still another aspect of the present invention, when the diameter of an imaginary circle drawn so that the extension of the main body is inscribed is 10.0 mm to 14.0 mm, the diameter of the outer peripheral surface of the main body is 7.2 mm. 12.4 mm, the curvature radius of the first curved surface portion and the fourth curved surface portion is 0.1 mm to 0.4 mm, and the curvature radius of the second curved surface portion and the third curved surface portion is 0.3 mm. The distance between the outer edge of the first inclined surface and the outer edge of the second inclined surface may be 2.0 mm to 2.1 mm.
本発明による車両シート用リクライナーシャフトによれば、中が空いた中空パイプ形態のリクライナーシャフトが提供されることにより車両の軽量化の一助を担うことができ、製造コストを節減する効果がある。 According to the recliner shaft for a vehicle seat according to the present invention, it is possible to help reduce the weight of the vehicle by providing a recliner shaft in the form of a hollow pipe with an empty space, which has an effect of reducing manufacturing costs.
また、本発明による車両シート用リクライナーシャフトによれば、内部に中空が形成され、重量が軽いながらも、十分なねじり強度が維持されてリクライナーに回転力を伝達できる。 Moreover, according to the recliner shaft for a vehicle seat according to the present invention, a hollow is formed in the interior, and a sufficient torsional strength is maintained while a weight is light, so that a rotational force can be transmitted to the recliner.
以下では本発明の実施例に関する添付図面を参照して詳細に説明する。ただし、以下で説明する実施例は、本発明が属する技術分野における通常の知識を有する者が発明を容易に実施できるほどに詳細に説明するためのものに過ぎなく、本発明の保護範囲がこれにより限定されることを意味しない。また、本発明の多様な実施例を説明することにおいて、同じ技術的特徴を有する構成要素に対しては同じ図面符号を使う。 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments described below are merely for the purpose of explaining in detail so that a person having ordinary knowledge in the technical field to which the present invention belongs can easily carry out the invention, and the protection scope of the present invention is not limited thereto. Is not meant to be limited by In describing various embodiments of the present invention, the same reference numerals are used for components having the same technical characteristics.
［第１実施例］
図１は本発明の第１実施例による車両シート用リクライナーシャフトの斜視図であり、図２は本発明の第１実施例による車両シート用リクライナーシャフトの断面図である。
[First embodiment]
FIG. 1 is a perspective view of a recliner shaft for a vehicle seat according to the first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the recliner shaft for a vehicle seat according to the first embodiment of the present invention.
本発明の第１実施例による車両シート用リクライナーシャフト（以下、「リクライナーシャフト」という）１００は、中空パイプ形状の本体２００と、本体２００の外周面に突出形成される７個のスプライン突起３００とを含む。 A vehicle seat recliner shaft (hereinafter referred to as “recliner shaft”) 100 according to a first embodiment of the present invention includes a hollow pipe-shaped main body 200 and seven spline protrusions 300 formed to protrude from the outer peripheral surface of the main body 200. including.
本体２００の外周面と内周面は、全体的に円型断面のチューブ形状を成す。スプライン突起３００は、本体２００の外周面から半径方向の外側に突出し、本体２００の長手方向に沿って長く延長形成され、本体２００の円周方向に沿って同じ角度で離隔する７個のスプライン突起３００が形成される。 The outer peripheral surface and inner peripheral surface of the main body 200 form a tube shape with a circular cross section as a whole. The spline protrusion 300 protrudes radially outward from the outer peripheral surface of the main body 200, is extended and formed along the longitudinal direction of the main body 200, and is separated by the same angle along the circumferential direction of the main body 200. 300 is formed.
図２に示すように、本体２００の内周面は、円型断面で形成される。 As shown in FIG. 2, the inner peripheral surface of the main body 200 is formed with a circular cross section.
また、スプライン突起３００は、本体２００の外周面から外側に突出する第１曲面部３１０と、第１曲面部３１０の端から延長形成される第１傾斜面部３２０と、第１傾斜面部３２０の端から外側に湾曲突出する第２曲面部３３０と、第２曲面部３３０の端から本体２００の外周面と同心に延長形成される延長部３４０と、延長部３４０の端から順に形成される第３曲面部３５０と第２傾斜面部３６０及び第４曲面部３７０を含む。 The spline protrusion 300 includes a first curved surface portion 310 that protrudes outward from the outer peripheral surface of the main body 200, a first inclined surface portion 320 that extends from the end of the first curved surface portion 310, and an end of the first inclined surface portion 320. A second curved surface portion 330 that protrudes outward from the second curved surface portion, an extension portion 340 that extends from the end of the second curved surface portion 330 concentrically with the outer peripheral surface of the main body 200, and a third shape that is formed in order from the end of the extension portion 340. A curved surface portion 350, a second inclined surface portion 360, and a fourth curved surface portion 370 are included.
第１曲面部３１０と第４曲面部３７０が同じ曲率で形成され、第２曲面部３３０と第３曲面部３５０が同じ曲率で形成され得る。この時、第１，第４曲面部３１０，３７０の曲率中心Ｏ１，Ｏ４は、スプライン突起３００の外側に位置するため、第１，第４曲面部３１０，３７０は、スプライン突起３００の内側に向かって凹んで形成される。また、第２，第３曲面部３３０，３５０の曲率中心Ｏ２，Ｏ３は、スプライン突起３００の内側に位置するため、第２，第３曲面部３３０，３５０は、スプライン突起３００の外側に向かって膨らんで形成される。 The first curved surface portion 310 and the fourth curved surface portion 370 may be formed with the same curvature, and the second curved surface portion 330 and the third curved surface portion 350 may be formed with the same curvature. At this time, since the curvature centers O 1 and O 4 of the first and fourth curved surface portions 310 and 370 are located outside the spline protrusion 300, the first and fourth curved surface portions 310 and 370 are located inside the spline protrusion 300. It is formed so as to be recessed toward the surface. Further, since the curvature centers O 2 and O 3 of the second and third curved surface portions 330 and 350 are located inside the spline protrusion 300, the second and third curved surface portions 330 and 350 are located outside the spline protrusion 300. It swells and forms.
第３曲面部３５０は、本体の中心Ｏと延長部３４０の中間点Ｍ１とをつなぐ仮想の延長線Ｌ１を基準に第２曲面部３３０と対称して形成され、第２傾斜面部３６０は、仮想の延長線Ｌ１を基準に第１傾斜面部３２０と対称して形成され、第４曲面部３７０は、仮想の延長線Ｌ１を基準に本体２００の外周面まで第１曲面部３１０と対称形成される。 The third curved portion 350 is formed symmetrically with the second curved portion 330 relative to the extension line L 1 of the virtual connecting the intermediate point M 1 of the center O and the extension portion 340 of the main body, the second inclined surface portion 360 , are formed symmetrically with the first inclined surface 320 relative to the extension line L 1 of the virtual fourth curved portion 370 includes a first curved portion 310 to the outer peripheral surface of the body 200 relative to the extension line L 1 of the virtual Symmetrically formed.
この時、第１傾斜面部３２０は、第１曲面部３１０の端から仮想の延長線Ｌ１方向に傾斜して延長形成され、第２曲面部３３０の端は、延長部３４０が内接するように描かれる仮想円Ｃ１の一側に接する。 At this time, the first inclined surface portion 320 is formed to extend inclined in the imaginary extension line L 1 direction from the end of the first curved portion 310, the end of the second curved surface 330, as extension 340 is inscribed pictured in contact with one side of the imaginary circle C 1.
一方、説明していない図面符号Ｃ２は、本体２００の外周面をつなぐ仮想円を指す。 On the other hand, an unexplained drawing symbol C 2 indicates a virtual circle connecting the outer peripheral surfaces of the main body 200.
本発明の具体的な実施例として、本体２００の外周面の直径を１０．３（単位：ｍｍ）とする時、本体２００の内周面の直径は８．３である。この時、第１曲面部３１０と第４曲面部３７０の曲率半径は０．４以下、好ましくは０．１〜０．４であり、第２曲面部３３０と第３曲面部３５０の曲率半径は０．３〜０．５であり、好ましくは０．４である。また、第１傾斜面部３２０の外側端と第２傾斜面部３６０の外側端との間の距離ｄは２．０〜２．であり、好ましくは２．１である。 As a specific embodiment of the present invention, when the diameter of the outer peripheral surface of the main body 200 is 10.3 (unit: mm), the diameter of the inner peripheral surface of the main body 200 is 8.3. At this time, the curvature radius of the 1st curved surface part 310 and the 4th curved surface part 370 is 0.4 or less, preferably 0.1-0.4, and the curvature radius of the 2nd curved surface part 330 and the 3rd curved surface part 350 is It is 0.3-0.5, Preferably it is 0.4. The distance d between the outer end of the first inclined surface portion 320 and the outer end of the second inclined surface portion 360 is 2.0-2. And preferably 2.1.
本発明の他の実施例として、延長部３４０が内接するように描かれる仮想円Ｃ１の直径を１０．０〜１４．０（単位：ｍｍ）とする時、本体２００の外周面の直径は７．２〜１２．４である。この時、第１曲面部３１０と第４曲面部３７０の曲率半径は０．４以下、好ましくは０．１〜０．４であり、第２曲面部３３０と第３曲面部３５０の曲率半径は０．３〜０．５であり、好ましくは０．４である。また、第１傾斜面部３２０の外側端と第２傾斜面部３６０の外側端との間の距離ｄは２．０〜２．１であり、好ましくは２．１である。また、本体２００の内周面の直径は４．４〜１０．８である。 As another embodiment of the present invention, when the diameter of the virtual circle C 1 drawn so that the extension 340 is inscribed is 10.0 to 14.0 (unit: mm), the diameter of the outer peripheral surface of the main body 200 is 7.2 to 12.4. At this time, the curvature radius of the 1st curved surface part 310 and the 4th curved surface part 370 is 0.4 or less, preferably 0.1-0.4, and the curvature radius of the 2nd curved surface part 330 and the 3rd curved surface part 350 is It is 0.3-0.5, Preferably it is 0.4. Moreover, the distance d between the outer side end of the 1st inclined surface part 320 and the outer side end of the 2nd inclined surface part 360 is 2.0-2.1, Preferably it is 2.1. The diameter of the inner peripheral surface of the main body 200 is 4.4 to 10.8.
図３は本発明の第１実施例による車両シート用リクライナーシャフトの使用状態図である。 FIG. 3 is a view showing a usage state of the recliner shaft for a vehicle seat according to the first embodiment of the present invention.
本発明の第１実施例によるリクライナーシャフト１００は、アルミニウムなどの金属材質であり、中が空いた中空パイプ形状からなり、両端が車両のシート１０の両側に備えられるリクライナー装置２０にそれぞれスプライン結合される。 The recliner shaft 100 according to the first embodiment of the present invention is made of a metal material such as aluminum and has a hollow pipe shape with a hollow inside, and both ends are splined to the recliner device 20 provided on both sides of the vehicle seat 10, respectively. The
この時、リクライナーシャフト１００の外周面に突出形成されたスプライン突起３００は、リクライナー装置２０のスプライン溝（図示せず）に噛み合わされ、リクライナーシャフト１００の回転力をリクライナー装置２０に伝達する役割をする。 At this time, the spline protrusion 300 formed on the outer peripheral surface of the recliner shaft 100 is engaged with a spline groove (not shown) of the recliner device 20 to transmit the rotational force of the recliner shaft 100 to the recliner device 20. .
本発明の第１実施例によるリクライナーシャフト１００は、塑性加工によって重量および材料コストを節減できる中空形態で形成され、上述したような構成で本体２００とスプライン突起３００が形成されることによって、ねじり強度が１００〜１２４Ｎであり、従来の同じ外径の中実シャフトと比べて同一またはより優れたねじり強度を有することができる。 The recliner shaft 100 according to the first embodiment of the present invention is formed in a hollow shape capable of saving weight and material cost by plastic working, and the torsional strength is obtained by forming the main body 200 and the spline protrusion 300 with the above-described configuration. Is 100 to 124N, and can have the same or better torsional strength as compared with a conventional solid shaft having the same outer diameter.
［第２実施例］
図４は本発明の第２実施例による車両シート用リクライナーシャフトの断面図である。
[Second Embodiment]
FIG. 4 is a sectional view of a vehicle seat recliner shaft according to a second embodiment of the present invention.
本発明の第２実施例によるリクライナーシャフト１００ａは、中空パイプ形状の本体２００と、本体２００の外周面に同じ角度で離隔する７個のスプライン突起３００が突出形成される点で、前述した第１実施例と同じであり、ただし、本体２００の内周面にスプライン突起３００と対応して半径方向の外側に溝部４００が陥没形成される点で差がある。 The recliner shaft 100a according to the second embodiment of the present invention includes a hollow pipe-shaped main body 200 and seven spline protrusions 300 spaced apart at the same angle on the outer peripheral surface of the main body 200. However, there is a difference in that the groove portion 400 is formed in the radially outer side corresponding to the spline protrusion 300 on the inner peripheral surface of the main body 200.
したがって、前述した第１実施例と同じ構成に対しては同じ図面符号を付与して重複する説明は省略し、以下前述した第１実施例との相違点を中心に本発明の第２実施例によるリクライナーシャフト１００ａについて詳しく説明する。 Therefore, the same components as those in the first embodiment described above are denoted by the same reference numerals and redundant description is omitted, and the second embodiment of the present invention is mainly described below with respect to the differences from the first embodiment described above. The recliner shaft 100a will be described in detail.
本発明の第２実施例によれば、本体２００の内周面にスプライン突起３００と対応して７個の溝部４００が本体２００の半径方向の外側に向かって陥没形成される。 According to the second embodiment of the present invention, seven grooves 400 corresponding to the spline protrusions 300 are formed on the inner peripheral surface of the main body 200 so as to be recessed toward the outer side in the radial direction of the main body 200.
ここで、溝部４００の両側壁は、本体２００の内周面の一側で延長部３４０の中間点Ｍ１方向に湾曲形成される第５曲面部４１０と、本体２００の中心Ｏと延長部３４０の中間点Ｍ１をつなぐ仮想の延長線Ｌ１に対して第５曲面部４１０と対称形成される第６曲面部４２０を含んでなる。これにより、溝部４００は入口から床に行くほど幅が細くなり、溝部４００の床は尖って形成される。 Here, both side walls of the groove 400 includes a fifth curved surface portion 410 which is curved in the intermediate point M 1 direction of extension 340 on one side of the inner peripheral surface of the main body 200, the extension 340 and the center O of the main body 200 comprising a sixth curved surface portion 420 which is formed to an imaginary extension line L 1 connecting the midpoint M 1 of a fifth curved section 410 of symmetry. Thereby, the width of the groove 400 becomes narrower from the entrance to the floor, and the floor of the groove 400 is formed to be sharp.
この時、第５曲面部４１０は、第１曲面部３１０と同じ曲率中心を有し、第６曲面部４２０は、第４曲面部３７０と同じ曲率中心を有する。すなわち、第５曲面部４１０は、第１曲面部の曲率中心Ｏ１を中心に円弧形状に形成され、第６曲面部４２０は、第４曲面部の曲率中心Ｏ４を中心に円弧形状で形成され、第５曲面部４１０と第６曲面部４２０は、仮想の延長線Ｌ１上で相互接するようになる。 At this time, the fifth curved surface portion 410 has the same center of curvature as the first curved surface portion 310, and the sixth curved surface portion 420 has the same center of curvature as the fourth curved surface portion 370. That is, the fifth curved surface portion 410 is formed in an arc shape around the curvature center O 1 of the first curved surface portion, and the sixth curved surface portion 420 is formed in an arc shape around the curvature center O 4 of the fourth curved surface portion. Thus, the fifth curved surface portion 410 and the sixth curved surface portion 420 come into contact with each other on the virtual extension line L1.
一方、第１曲面部３１０と第５曲面部４１０、および第４曲面部３７０と第６曲面部４２０との間の間隔は、本体２００の外周面と内周面との間の間隔、すなわち、リクライナーシャフト１００の厚さと同一に形成され得る。例えば、本体２００の外周面の直径を１０．３（単位：ｍｍ）とする時、本体２００の内周面の直径は８．３であり、第１曲面部３１０と第５曲面部４１０、および第４曲面部３７０と第６曲面部４２０との間の間隔は、各々１に設定され得、第５曲面部４１０と第６曲面部４２０の曲率半径は、１．４以下、好ましくは１．１〜１．４で形成され得る。 On the other hand, the distance between the first curved surface part 310 and the fifth curved surface part 410, and the fourth curved surface part 370 and the sixth curved surface part 420 is the distance between the outer peripheral surface and the inner peripheral surface of the main body 200, that is, It can be formed to have the same thickness as the recliner shaft 100. For example, when the diameter of the outer peripheral surface of the main body 200 is 10.3 (unit: mm), the diameter of the inner peripheral surface of the main body 200 is 8.3, and the first curved surface portion 310, the fifth curved surface portion 410, and The distance between the fourth curved surface portion 370 and the sixth curved surface portion 420 can be set to 1, and the curvature radius of the fifth curved surface portion 410 and the sixth curved surface portion 420 is 1.4 or less, preferably 1. 1 to 1.4 can be formed.
また、図面に示されたＣ３は本体２００の内周面をつなぐ仮想円を指し、Ｃ４は本体２００の外周面をつなぐ仮想円を指し、Ｃ５は延長部３４０が内接するように描かれる仮想円を指す。 Also, C 3 shown in the drawing indicates a virtual circle connecting the inner peripheral surface of the main body 200, C 4 indicates a virtual circle connecting the outer peripheral surface of the main body 200, and C 5 is drawn so that the extension 340 is inscribed. Refers to a virtual circle.
この時、本発明の他の実施例として、本体２００の延長部３４０が内接するように描かれる仮想円Ｃ5の直径を１０．０〜１４．０（単位：ｍｍ）とする時、本体２００の外周面の直径は７．２〜１２．４であり、第１曲面部３１０と第５曲面部４１０、および第４曲面部３７０と第６曲面部４２０との間の間隔は、各々０．８〜１．４に設定され得、第５曲面部４１０と第６曲面部４２０の曲率半径は、１．４以下、好ましくは１．１〜１．４で形成され得る。 At this time, as another embodiment of the present invention, when the diameter of the virtual circle C 5 drawn so that the extension 340 of the main body 200 is inscribed is 10.0 to 14.0 (unit: mm), the main body 200 The outer peripheral surface has a diameter of 7.2 to 12.4, and the intervals between the first curved surface portion 310 and the fifth curved surface portion 410 and between the fourth curved surface portion 370 and the sixth curved surface portion 420 are each 0.00 mm. The curvature radius of the 5th curved surface part 410 and the 6th curved surface part 420 can be set to 1.4 or less, preferably 1.1 to 1.4.
このように、本発明の第２実施例によるリクライナーシャフト１００は、塑性加工によって重量および材料コストを節減できる中空形態で形成され得、上述したような構成で本体２００とスプライン突起３００及び溝部４００が形成されることによって、ねじり強度が１００〜１２４Ｎであり、従来に同じ外径の中実シャフトと比べて同じであるかさらに優れたねじり強度を有することができる。 As described above, the recliner shaft 100 according to the second embodiment of the present invention may be formed in a hollow shape that can reduce the weight and material cost by plastic working, and the main body 200, the spline protrusion 300, and the groove portion 400 are configured as described above. By being formed, the torsional strength is 100 to 124N, and it can have the same or even better torsional strength than a solid shaft having the same outer diameter in the past.
以上、本発明の実施例について説明したが、本発明が属する技術分野における通常の知識を有する者であれば、本発明の特許請求の範囲を外れずに多様に変形して実施できると理解される。 The embodiments of the present invention have been described above. However, it is understood that various modifications can be made without departing from the scope of the claims of the present invention by those who have ordinary knowledge in the technical field to which the present invention belongs. The
１０ シート
２０ リクライナー装置
１００，１００ａ リクライナーシャフト
２００ 本体
３００ スプライン突起
３１０ 第１曲面部
３２０ 第１傾斜面部
３３０ 第２曲面部
３４０ 延長部
３５０ 第３曲面部
３６０ 第２傾斜面部
３７０ 第４曲面部
４００ 溝部
４１０ 第５曲面部
４２０ 第６曲面部
DESCRIPTION OF SYMBOLS 10 Sheet 20 Recliner apparatus 100, 100a Recliner shaft 200 Main body 300 Spline protrusion 310 1st curved surface part 320 1st inclined surface part 330 2nd curved surface part 340 Extension part 350 3rd curved surface part 360 2nd inclined surface part 370 4th curved surface part 400 Groove part 410 5th curved surface portion 420 6th curved surface portion
Claims (7)
前記本体の外周面から半径方向の外側に突出形成され、前記本体の長手方向に沿って延長される７個のスプライン突起とを含み、
前記７個のスプライン突起は、前記本体の周囲に沿って同じ角度で離隔形成され、前記本体の内周面は円型断面で形成される車両シート用リクライナーシャフト。 A hollow pipe-shaped body;
Including seven spline protrusions that protrude outwardly in the radial direction from the outer peripheral surface of the main body and extend along the longitudinal direction of the main body,
The seven spline protrusions are spaced apart at the same angle along the periphery of the main body, and the inner peripheral surface of the main body is a vehicle seat recliner shaft formed in a circular cross section.
前記溝部の両側壁は、本体の内周面から前記延長部の中間点方向に湾曲形成される第５曲面部と、前記本体の中心と前記延長部の中間点をつなぐ仮想の延長線を基準に前記第５曲面部と対称形成される第６曲面部とを含むことを特徴とする請求項３に記載の車両シート用リクライナーシャフト。 A plurality of grooves that are recessed from the inner peripheral surface of the main body to the outside in the radial direction corresponding to the spline protrusions;
The both side walls of the groove portion are based on a fifth curved surface portion that is curved from the inner peripheral surface of the main body toward the intermediate point of the extension portion, and a virtual extension line that connects the center of the main body and the intermediate point of the extension portion. The vehicle seat recliner shaft according to claim 3, further comprising a sixth curved surface portion formed symmetrically with the fifth curved surface portion.
When the diameter of a virtual circle drawn so that the extension of the main body is inscribed is 10.0 mm to 14.0 mm, the diameter of the outer peripheral surface of the main body is 7.2 mm to 12.4 mm, and the first curved surface And the fourth curved surface portion have a curvature radius of 0.1 mm to 0.4 mm, the second curved surface portion and the third curved surface portion have a curvature radius of 0.3 mm to 0.5 mm, and the first slope The recliner shaft for a vehicle seat according to claim 2, wherein a distance between an outer end of the surface and an outer end of the second inclined surface is 2.0 mm to 2.1 mm.
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