JP2021126993A

JP2021126993A - Seat slide device

Info

Publication number: JP2021126993A
Application number: JP2020022383A
Authority: JP
Inventors: 孝宣伊藤; Takanori Ito; 容造古田; Yozo Furuta; 忍佐々木; Shinobu Sasaki; 弘人堀江; Hiroto Horie; 浩久阿部; Hirohisa Abe; 健一新妻; Kenichi Niitsuma; 将也古田; Masaya Furuta; 祐輔日向野; Yusuke Higano; 祐貴細川; Yuki Hosokawa
Original assignee: Honda Motor Co Ltd; TS Tech Co Ltd; Imasen Electric Industrial Co Ltd
Current assignee: Honda Motor Co Ltd; TS Tech Co Ltd; Imasen Electric Industrial Co Ltd
Priority date: 2020-02-13
Filing date: 2020-02-13
Publication date: 2021-09-02
Anticipated expiration: 2040-02-13
Also published as: JP7125617B2

Abstract

To provide a constitution capable of smoothly switching between a locked state and an unlocked state.SOLUTION: A recess 36 for engagement is formed to have such an approximately U-shaped cross-section that a downside comprising opposed side walls 36S and an upper wall 36T between the side walls 36S and 36S is opened. A protrusion 36TT, a tip 36Tt of which is positioned on the downside with respect to an upper end 36SU of the side wall 36S, is formed on the upper wall 36T. Thus, a piece part 53 for engagement is not fitted into the recess 36 for engagement. Even when component management accuracy is decreased, a locked state and an unlocked state can be smoothly switched.SELECTED DRAWING: Figure 10

Description

本発明は、シートスライド装置に関するものである。 The present invention relates to a seat slide device.

車両用のシートを前後に調整するためのシートスライド装置として、下記特許文献１に示すシートスライド装置が知られている。このシートスライド装置は、車体に固定されるロアレール部材と、シートに固定されるとともにロアレール部材に対し摺動自在に設けられるアッパーレール部材と、を備えている。また、シートスライド装置は、アッパーレール部材に固定され、ロアレール部材に係合することでスライド状態をロックするロック部材と、ロック部材を傾動させることでロック状態およびロック解除状態を切り替える操作レバーと、を備えている。そして、ロック状態では、ロック部材に形成された複数の係合用凸部が、ロアレール部材において長手方向に沿って並ぶように形成された複数の係合用凹部に係合することで、アッパーレール部材のロアレール部材に対する摺動を規制する。 As a seat slide device for adjusting the seat for a vehicle back and forth, the seat slide device shown in Patent Document 1 below is known. This seat slide device includes a lower rail member fixed to the vehicle body and an upper rail member fixed to the seat and slidably provided with respect to the lower rail member. Further, the seat slide device is fixed to the upper rail member and engages with the lower rail member to lock the slide state, and the lock member is tilted to switch between the locked state and the unlocked state. It has. Then, in the locked state, the plurality of engaging protrusions formed on the lock member engage with the plurality of engaging recesses formed so as to line up along the longitudinal direction in the lower rail member, whereby the upper rail member Regulate sliding with respect to the lower rail member.

特開２０１８−７００３２号公報Japanese Unexamined Patent Publication No. 2018-70032

特許文献１に開示されるようなシートスライド装置では、係合用凹部は、下側に開口する断面略Ｕ字状に形成されている。ここで、板状片から成る係合用凸部がＵ字の狭くなっている上端近傍に填まり込むことを避け、安定した噛み合いと、設定された強度を保つためには、係合用凹部の上端と係合用凸部とが所定範囲のクリアランスに位置決めされる必要がある。このため、高い部品精度が必要になる。 In the seat slide device as disclosed in Patent Document 1, the engaging recess is formed in a substantially U-shaped cross section that opens downward. Here, in order to prevent the engaging convex portion made of the plate-shaped piece from being fitted near the upper end where the U-shape is narrowed, and to maintain stable meshing and the set strength, the upper end of the engaging concave portion is maintained. And the engaging protrusion need to be positioned within a predetermined range of clearance. Therefore, high component accuracy is required.

本発明は、上述した課題を解決するためになされたものであり、部品管理精度を緩和しながら、ロック状態とアンロック状態と円滑に切り換え得る構成を提供することを目的とする。 The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a configuration capable of smoothly switching between a locked state and an unlocked state while relaxing the parts management accuracy.

上記目的を達成するため、特許請求の範囲に記載の請求項１のシートスライド装置は、車体に固定され、長手方向に沿って等間隔に複数の係合用凹部（３６）が形成されるロアレール部材（３０）と、
シート（Ｓ）に固定されるとともに前記ロアレール部材に対して前記長手方向に摺動自在に設けられるアッパーレール部材（２０）と、
前記アッパーレール部材に支持され、前記複数の係合用凹部の一部のそれぞれに係脱可能な複数の係合用片部（５３）を有するロック部材（４０）と、
前記係合用片部および前記係合用凹部の係脱を制御する操作部材（７０）と、
を備える。そして、
複数の前記係合用凹部（３６）は、対向する側壁（３６Ｓ）と該側壁間の上壁（３６Ｔ）とからなる下側を開口する断面略コ字状に形成され、
前記上壁には、下側を指向し前記側壁の上端（３６ＳＵ）よりも下側に先端（３６Ｔｔ）が位置する突部（３６ＴＴ）が形成されていることを特徴とする。
なお、上記各括弧内の符号は、後述する実施形態に記載の具体的手段との対応関係を示すものである。 In order to achieve the above object, the seat slide device according to claim 1 according to the claims is a lower rail member which is fixed to a vehicle body and has a plurality of engaging recesses (36) formed at equal intervals along the longitudinal direction. (30) and
An upper rail member (20) fixed to the seat (S) and slidably provided in the longitudinal direction with respect to the lower rail member.
A lock member (40) supported by the upper rail member and having a plurality of engaging pieces (53) that can be engaged with and disengaged from each of the plurality of engaging recesses.
An operating member (70) that controls engagement / disengagement of the engaging piece and the engaging recess.
To be equipped. and,
The plurality of engaging recesses (36) are formed in a substantially U-shaped cross section that opens the lower side including the facing side wall (36S) and the upper wall (36T) between the side walls.
The upper wall is characterized in that a protrusion (36TT) is formed on the upper wall so as to face the lower side and the tip (36Tt) is located below the upper end (36SU) of the side wall.
The reference numerals in the parentheses indicate the correspondence with the specific means described in the embodiments described later.

請求項１の発明では、係合用凹部は、対向する側壁と該側壁間の上壁とからなる下側を開口する断面略コ字状に形成される。上壁には、下側を指向し側壁の上端よりも下側に先端が位置する突部が形成されている。 In the invention of claim 1, the engaging recess is formed in a substantially U-shaped cross section that opens the lower side including the facing side wall and the upper wall between the side walls. The upper wall is formed with a protrusion that faces downward and has a tip located below the upper end of the side wall.

このため、部品管理精度を緩和し、係合用片部が係合用凹部、即ち、突部の先端に接しても、係合用凹部の側壁の上端よりも低い位置にある。このため、係合用片部が係合用凹部に填まり込むことが無い。衝突時に設定された強度を保つことができる。また、部品管理精度を緩和しても、ロック状態とアンロック状態と円滑に切り換え得る。高い部品精度が要求されない。 Therefore, the accuracy of component management is relaxed, and even if the engaging piece is in contact with the engaging recess, that is, the tip of the protrusion, the engagement recess is located at a position lower than the upper end of the side wall of the engaging recess. Therefore, the engaging piece does not fit into the engaging recess. The set strength can be maintained at the time of collision. Further, even if the parts management accuracy is relaxed, the locked state and the unlocked state can be smoothly switched. High component accuracy is not required.

請求項２の発明では、複数の前記係合用片部は、板状部材に形成された複数の矩形の貫通孔間の片状部から構成される。これにより、車体の衝突等によってロック部材に対して荷重が加えられた場合であっても、貫通孔間の片状部から構成される係合用片部は変形し難く、係合用片部が係合用凹部から抜け出ることを防ぐことができ、ロック状態をより一層安定的に維持することができる。 In the invention of claim 2, the plurality of engaging pieces are composed of pieces between a plurality of rectangular through holes formed in a plate-shaped member. As a result, even when a load is applied to the lock member due to a collision of the vehicle body or the like, the engaging piece composed of the flake portion between the through holes is not easily deformed, and the engaging piece is engaged. It is possible to prevent it from coming out of the working recess, and it is possible to maintain the locked state even more stably.

本発明の実施形態に係るシートスライド装置が設置される車両用シートの構成概要を示す側面図である。It is a side view which shows the structural outline of the seat for the vehicle which installs the seat slide device which concerns on embodiment of this invention. シートスライド装置を示す斜視図である。It is a perspective view which shows the seat slide device. シートスライド装置の分解斜視図である。It is an exploded perspective view of the seat slide device. アッパーレールを示す平面図である。It is a top view which shows the upper rail. アッパーレールの断面図である。It is sectional drawing of the upper rail. ロック部材を示す斜視図である。It is a perspective view which shows the lock member. ロック部材の平面図である。It is a top view of the lock member. ロック部材の側面図である。It is a side view of a lock member. 図９（Ａ）は、ロック状態におけるシートスライド装置の一部を示す断面図であり、図９（Ｂ）は、ロック解除状態におけるシートスライド装置の一部を示す断面図である。FIG. 9A is a cross-sectional view showing a part of the seat slide device in the locked state, and FIG. 9B is a cross-sectional view showing a part of the seat slide device in the unlocked state. 図１０（Ａ）、図１０（Ｂ）は、ロック状態においてロアレールの係合凹部とロックレバーの係合片部との係合状態を説明するための説明図であり、図１０（Ｃ）は、ロアレールの係合凹部とロックレバーの係合片部との拡大図である。10 (A) and 10 (B) are explanatory views for explaining the engaged state between the engaging recess of the lower rail and the engaging piece of the lock lever in the locked state, and FIG. 10 (C) is an explanatory view. , It is an enlarged view of the engaging recess of the lower rail and the engaging piece part of the lock lever. 図１１（Ａ）、図１１（Ｂ）は、従来技術に係るシートスライド装置において、ロック状態におけるロアレールとロック部材の係合状態を説明するための説明図であり、図１１（Ｃ）は、ロアレールの係合凹部とロックレバーの係合片部との拡大図である。11 (A) and 11 (B) are explanatory views for explaining the engaged state of the lower rail and the lock member in the locked state in the seat slide device according to the prior art, and FIG. 11 (C) is an explanatory view. It is an enlarged view of the engaging recess of the lower rail and the engaging piece part of the lock lever.

［実施形態］
以下、本発明の実施形態について図を参照して説明する。
図１〜図３に示すように、シートスライド装置１０は、車両用シートＳを前後摺動可能に車両フロアＢに固定するもので、主に、車両用シートＳに固定されるアッパーレール２０と、前後フット３１を介して車体（車両フロアＢ）に固定されるロアレール３０と、アッパーレール２０とロアレール３０とを相対移動不能に固定（ロック）可能なロック部材４０と、をそれぞれ一対備えるとともに（図１〜図３には一方のみを記載する）、上記一対のロック部材４０によるアッパーレール２０とロアレール３０とのロック状態とそのロック状態を解除するロック解除状態とを切り替えるために操作される操作レバー７０とを備えている。以下、シートスライド装置１０を構成する各要素について詳述する。 [Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the seat slide device 10 fixes the vehicle seat S to the vehicle floor B so as to be slidable back and forth, and mainly includes the upper rail 20 fixed to the vehicle seat S. A pair of a lower rail 30 fixed to the vehicle body (vehicle floor B) via the front and rear foot 31 and a lock member 40 capable of fixing (locking) the upper rail 20 and the lower rail 30 so as to be relatively immovable are provided (each). (1 to FIG. 3 show only one), an operation operated to switch between the locked state of the upper rail 20 and the lower rail 30 by the pair of locking members 40 and the unlocked state for releasing the locked state. It is equipped with a lever 70. Hereinafter, each element constituting the seat slide device 10 will be described in detail.

アッパーレール（アッパーレール部材）２０は、ロアレール３０に対して摺動自在に設けられる。また、アッパーレール２０は、図３〜図５に示すように、アッパーレール２０は車両フロアＢに略水平で車両用シートＳが図略のブラケット等を介して取り付けられる上壁２１とこの上壁２１の両端から垂設される側壁２２と、各側壁２２の下端からそれぞれ上方に屈曲して折れ曲がっている連結部２３と、リテーナ（図示略）によって保持されるスチールボール（図示略）をロアレール３０との間の空間に保持する傾斜部２４と、を備えている。 The upper rail (upper rail member) 20 is slidably provided with respect to the lower rail 30. Further, as shown in FIGS. 3 to 5, the upper rail 20 is substantially horizontal to the vehicle floor B, and the vehicle seat S is attached to the upper wall 21 and the upper wall thereof via a bracket or the like shown in the drawing. The lower rail 30 includes a side wall 22 that is vertically hung from both ends of the side wall 21, a connecting portion 23 that is bent upward from the lower end of each side wall 22, and a steel ball (not shown) held by a retainer (not shown). It is provided with an inclined portion 24 that is held in the space between the two.

また、図４、図５に示すように、一方の側壁２２と、この側壁２２に連結する連結部２３とには、ロック部材４０の一部が入り込むことが可能な長孔状の切欠き２２ａが形成されている。また、側壁２２側の切欠き２２ａの一部には、ロック部材４０のロック片５０（後述する）が係合する係合用凹部２２ｂが、アッパーレール２０の長手方向に沿って等間隔に３つ設けられている。また、アッパーレール２０の一端側において、一方の側壁２２と連結部２３とに、後述するロック部材４０の突出部６１ｂ，６１ｃがそれぞれ嵌合する略長孔状の切欠き２２ｃ，２２ｄが形成されている。また、切欠き２２ｃにおける上壁２１側に、上壁２１側とは反対側に突出する突出片２２ｅが形成され、切欠き２２ｃにおける上壁２１側とは反対側に、他方の側壁２２側に突出する突出片２２ｆが形成されている。また、切欠き２２ｄにおける上壁２１側とは反対側に、他方の側壁２２側に突出する突出片２２ｇが形成されている。 Further, as shown in FIGS. 4 and 5, one side wall 22 and the connecting portion 23 connected to the side wall 22 have a long hole-shaped notch 22a in which a part of the lock member 40 can be inserted. Is formed. Further, in a part of the notch 22a on the side wall 22 side, three engaging recesses 22b with which the lock piece 50 (described later) of the lock member 40 is engaged are provided at equal intervals along the longitudinal direction of the upper rail 20. It is provided. Further, on one end side of the upper rail 20, substantially elongated hole-shaped notches 22c and 22d are formed in one side wall 22 and the connecting portion 23, respectively, in which the protruding portions 61b and 61c of the lock member 40, which will be described later, are fitted. ing. Further, a protruding piece 22e is formed on the upper wall 21 side of the notch 22c so as to project on the side opposite to the upper wall 21 side, and on the side opposite to the upper wall 21 side of the notch 22c and on the other side wall 22 side. A protruding piece 22f is formed. Further, on the side of the notch 22d opposite to the upper wall 21 side, a protruding piece 22g protruding toward the other side wall 22 side is formed.

ロアレール（ロアレール部材）３０は、図３に示すように、車両フロアＢに略水平でアッパーレール２０の上壁２１に対向し前後フット３１を介して車両フロアＢに固定される底壁３２と、この底壁３２の両端から上方に延出する第１側部３３と、各第１側部３３の上端から中央に向かい底壁３２と略平行に設けられる鍔部３４と、各鍔部３４の端末から底壁３２に向かい第１側部３３と略平行に延出する第２側部３５とを備えている。 As shown in FIG. 3, the lower rail (lower rail member) 30 has a bottom wall 32 that is substantially horizontal to the vehicle floor B, faces the upper wall 21 of the upper rail 20, and is fixed to the vehicle floor B via the front and rear foot 31. A first side portion 33 extending upward from both ends of the bottom wall 32, a collar portion 34 provided substantially parallel to the bottom wall 32 from the upper end of each first side portion 33 toward the center, and each of the collar portions 34. A second side portion 35 extending from the terminal toward the bottom wall 32 and extending substantially parallel to the first side portion 33 is provided.

また、図３に示すように、側壁２２の各係合用凹部２２ｂに対応する第２側部３５には、係合用凹部２２ｂと同様に形成される４つ以上の係合用凹部３６が設けられている。 Further, as shown in FIG. 3, the second side portion 35 corresponding to each engaging recess 22b of the side wall 22 is provided with four or more engaging recesses 36 formed in the same manner as the engaging recess 22b. There is.

アッパーレール２０はその上壁２１がロアレール３０の底壁３２と対向し、ロアレール３０の第１側部３３と第２側部３５の間の空間にアッパーレール２０の傾斜部２４が入り込むように配置されている。なお、図示を省略するが、例えば、ロアレール３０の第１側部３３から鍔部３４との間のコーナー部分とアッパーレール２０の傾斜部２４の間と、ロアレール３０の底壁３２と第１側部３３との間のコーナー部分とアッパーレールの連結部２３の間には、リテーナ（図示略）によって保持されるスチールボール（図示略）が配置されている。このように、リテーナに保持されるスチールボールにより、アッパーレール２０とロアレール３０は車両前後方向に円滑に摺動できるようになる。 The upper rail 20 is arranged so that the upper wall 21 faces the bottom wall 32 of the lower rail 30 and the inclined portion 24 of the upper rail 20 enters the space between the first side portion 33 and the second side portion 35 of the lower rail 30. Has been done. Although not shown, for example, between the corner portion between the first side portion 33 of the lower rail 30 and the flange portion 34 and the inclined portion 24 of the upper rail 20, and between the bottom wall 32 and the first side of the lower rail 30. A steel ball (not shown) held by a retainer (not shown) is arranged between the corner portion between the portion 33 and the connecting portion 23 of the upper rail. In this way, the steel balls held by the retainer allow the upper rail 20 and the lower rail 30 to smoothly slide in the front-rear direction of the vehicle.

次に、ロック部材４０について詳しく説明する。図６〜図８に示すように、ロック部材４０は、略長手板状に形成され、アッパーレール２０とロアレール３０とを相対移動不能にロックするためのロック片５０と、アッパーレール２０に対してロック片５０を支持する支持部６０と、を備えている。このロック部材４０は、全体が板状部材によって一体形成されてなる構成である。 Next, the lock member 40 will be described in detail. As shown in FIGS. 6 to 8, the lock member 40 is formed in a substantially longitudinal plate shape, with respect to the lock piece 50 for locking the upper rail 20 and the lower rail 30 so as to be relatively immovable, and the upper rail 20. A support portion 60 for supporting the lock piece 50 is provided. The lock member 40 has a structure in which the entire lock member 40 is integrally formed of a plate-shaped member.

図６〜図８に示すように、ロック片５０は、ロック部材４０の一端側において、略矩形板状に形成されている。また、ロック片５０には、短手方向の両端部のそれぞれに沿って板厚方向に貫通する矩形のロック穴（貫通孔）５２が２つ形成されている。これにより、係合用片部５３が構成される。また、これら係合用片部５３は、長板片状に形成され、所定の配列方向に沿い配列されて隣り合う係合用片部間の距離が一定となるように配列される構成である。具体的には、図１０（Ａ）に示すように、係合用片部５３において上記配列方向にて隣り合う係合用片部間の距離はそれぞれＬ１で一定である。 As shown in FIGS. 6 to 8, the lock piece 50 is formed in a substantially rectangular plate shape on one end side of the lock member 40. Further, the lock piece 50 is formed with two rectangular lock holes (through holes) 52 penetrating in the plate thickness direction along each of both ends in the lateral direction. As a result, the engaging piece 53 is configured. Further, these engaging pieces 53 are formed in the shape of a long plate piece, are arranged along a predetermined arrangement direction, and are arranged so that the distance between adjacent engaging pieces is constant. Specifically, as shown in FIG. 10A, the distance between the engaging pieces 53 adjacent to each other in the arrangement direction is constant at L1.

また、ロック片５０の板面上における中心部分において、板厚方向に略矩形状で貫通する貫通孔５４が形成されている。また、ロック片５０には、貫通孔５４を構成する壁部から板厚方向に立ち上がる突出片５５が形成されている。また、ロック片５０の支持部６０側の端部には、ロック片５０の一側における後述する連結部６２の接続位置に隣接する位置から連結部６２に沿って延出し、連結部６２を挟むように連結部６２と平行な一対の延出部５６，５６が形成されている。この延出部５６は、操作レバー７０からの押圧力を受ける部分である。 Further, a through hole 54 is formed in the central portion of the lock piece 50 on the plate surface in a substantially rectangular shape in the plate thickness direction. Further, the lock piece 50 is formed with a protruding piece 55 that rises in the plate thickness direction from the wall portion forming the through hole 54. Further, the end of the lock piece 50 on the support portion 60 side extends along the connecting portion 62 from a position adjacent to the connecting position of the connecting portion 62 described later on one side of the lock piece 50, and sandwiches the connecting portion 62. As described above, a pair of extending portions 56, 56 parallel to the connecting portion 62 are formed. The extension portion 56 is a portion that receives a pressing force from the operating lever 70.

図６〜図８に示すように、ロック部材４０の支持部６０は、アッパーレール２０に嵌合してロック片５０を間接的に支持する一対の支持片６１，６１と、ロック片５０と支持片６１とを連結する連結部６２と、一対の支持片６１，６１の間に形成されて支持片６１の内側への変形を規制する規制部６３と、を備えている。 As shown in FIGS. 6 to 8, the support portion 60 of the lock member 40 is supported by a pair of support pieces 61, 61 that are fitted to the upper rail 20 and indirectly support the lock piece 50, and the lock piece 50 and the support portion 60. A connecting portion 62 for connecting the pieces 61 and a regulating portion 63 formed between the pair of supporting pieces 61 and 61 to regulate the inward deformation of the supporting pieces 61 are provided.

図６〜図８に示すように、一対の支持片６１，６１は、それぞれ長手板状に形成され、一端が連結部６２と接続されている。また、支持片６１の他端側には、アッパーレール２０に固定される固定部６１ａが形成されている。固定部６１ａは、アッパーレール２０の切欠き２２ｃ，２２ｄにそれぞれ入り込む突出部６１ｂ，６１ｃを備えている。突出部６１ｂは、支持部６０の一端に位置し、支持片６１の長手方向に直交する方向において、他方の固定部６１ａとは反対側に突出するように板状に形成されている。また、突出部６１ｃは、突出部６１ｂと離間した支持片６１側の位置に、支持片６１の長手方向に直交する方向において、他方の固定部６１ａとは反対側に突出するように略台形板状に形成されている。 As shown in FIGS. 6 to 8, each of the pair of support pieces 61 and 61 is formed in the shape of a longitudinal plate, and one end thereof is connected to the connecting portion 62. Further, a fixing portion 61a fixed to the upper rail 20 is formed on the other end side of the support piece 61. The fixed portion 61a includes protruding portions 61b and 61c that enter the notches 22c and 22d of the upper rail 20, respectively. The projecting portion 61b is located at one end of the support portion 60, and is formed in a plate shape so as to project to the opposite side of the other fixing portion 61a in the direction orthogonal to the longitudinal direction of the support piece 61. Further, the projecting portion 61c is a substantially trapezoidal plate so as to project at a position on the support piece 61 side away from the projecting portion 61b in a direction orthogonal to the longitudinal direction of the support piece 61 and opposite to the other fixing portion 61a. It is formed in a shape.

図６〜図８に示すように、連結部６２は、長手板状に形成され、ロック片５０の一側の中心部分と一対の支持片６１，６１とに接続されている。また、連結部６２は、延出部５６と同様の厚さの長手板状に形成され、延出長さが延出部５６の長さのよりも長くなっている。また、連結部６２は、一対の延出部５６，５６のそれぞれと所定間隔をおいて並列するように形成されている。 As shown in FIGS. 6 to 8, the connecting portion 62 is formed in the shape of a longitudinal plate, and is connected to the central portion on one side of the lock piece 50 and the pair of support pieces 61, 61. Further, the connecting portion 62 is formed in the shape of a longitudinal plate having the same thickness as the extending portion 56, and the extending length is longer than the length of the extending portion 56. Further, the connecting portion 62 is formed so as to be parallel to each of the pair of extending portions 56, 56 at a predetermined interval.

図６〜図８に示すように、規制部６３は、連結部６２の一端に対して一対の支持片６１，６１と共に接続され、長手板状に形成されている。すなわち、規制部６３、連結部６２、及び一対の支持片６１，６１によって構成される部分がフォーク形状となっている。また、規制部６３は、連結部６２の一端に接続されて一対の支持片６１，６１に平行に延出する平板部６３ａと、平板部６３ａと連なる屈曲板部６３ｂと、を備えている。屈曲板部６３ｂは、図６、図８に示すように、略逆Ｕ字状に折り曲がった形状であり、一対の支持片６１，６１の間から離れて位置するようになっている。 As shown in FIGS. 6 to 8, the regulating portion 63 is connected to one end of the connecting portion 62 together with a pair of support pieces 61, 61, and is formed in a longitudinal plate shape. That is, the portion composed of the regulating portion 63, the connecting portion 62, and the pair of support pieces 61, 61 has a fork shape. Further, the regulating portion 63 includes a flat plate portion 63a connected to one end of the connecting portion 62 and extending in parallel with the pair of support pieces 61, 61, and a bent plate portion 63b connected to the flat plate portion 63a. As shown in FIGS. 6 and 8, the bent plate portion 63b has a shape bent in a substantially inverted U shape, and is positioned apart from between the pair of support pieces 61 and 61.

操作レバー７０は、係合用片部５３および係合用凹部３６の係脱を制御する操作部材として機能するもので、図３に示すように、棒状に形成される把持部７１と、この把持部７１の両端から互いに平行に略直線状にそれぞれ延出する連結部７２と、両連結部７２にそれぞれ連結されてアッパーレール２０とロック部材４０との間に配置される操作部７３とを備えている。また、操作部７３は、略長板状に形成され、この操作部７３の先端部分には、板面の一方側に突出する凸部７３ａが形成されている。また、操作部７３における長手方向の中心付近には当該長手方向に直交する方向に貫通する切欠き７３ｂが形成されている。また、操作部７３には、凸部７３ａが形成される側とは反対側において、切欠き７３ｂを挟むように、凸部７３ａの突出方向とは反対方向に突出する凸部７３ｃ，７３ｄが形成されている。 The operating lever 70 functions as an operating member that controls engagement / disengagement of the engaging piece 53 and the engaging recess 36. As shown in FIG. 3, a rod-shaped grip portion 71 and the grip portion 71 are formed. It is provided with a connecting portion 72 extending substantially linearly from both ends in parallel with each other, and an operating portion 73 connected to both connecting portions 72 and arranged between the upper rail 20 and the lock member 40. .. Further, the operating portion 73 is formed in a substantially elongated plate shape, and a convex portion 73a projecting to one side of the plate surface is formed at the tip portion of the operating portion 73. Further, a notch 73b penetrating in a direction orthogonal to the longitudinal direction is formed in the vicinity of the center of the operating portion 73 in the longitudinal direction. Further, the operating portion 73 is formed with convex portions 73c and 73d protruding in a direction opposite to the protruding direction of the convex portion 73a so as to sandwich the notch 73b on the side opposite to the side on which the convex portion 73a is formed. Has been done.

次に、ロック部材４０のアッパーレール２０への組み付けについて説明する。ロック部材４０の一対の支持片６１を外側から挟み押圧することで、一対の支持片６１がそれぞれ他方の支持片６１側に弾性変形することになる。この状態で、ロック部材４０をアッパーレール２０の一対の側壁２２，２２の間に入り込ませ、支持片６１の押圧状態を解除することで、図９（Ａ）に示すように、一対の突出部６１ｂ，６１ｂがそれぞれ一対の切欠き２２ｃ，２２ｃに向けて付勢されるように当該切欠き２２ｃ，２２ｃに圧入されて嵌合する。具体的には、突出部６１ｂは、切欠き２２ｃから側壁２２と連結部２３との間に入り込んで、突出片２２ｅと突出片２２ｆとに挟まれる状態となる。また、突出部６１ｃは、切欠き２２ｄから側壁２２と連結部２３との間に入り込んで、突出片２２ｇの側面に当接する状態となる。これにより、ロック部材４０は、アッパーレール２０に傾動可能に支持されることになる。 Next, assembling the lock member 40 to the upper rail 20 will be described. By sandwiching and pressing the pair of support pieces 61 of the lock member 40 from the outside, the pair of support pieces 61 are elastically deformed toward the other support piece 61, respectively. In this state, the lock member 40 is inserted between the pair of side walls 22 and 22 of the upper rail 20 to release the pressing state of the support piece 61, so that the pair of protruding portions are released as shown in FIG. 9A. The 61b and 61b are press-fitted into the notches 22c and 22c so as to be urged toward the pair of notches 22c and 22c, respectively. Specifically, the protruding portion 61b enters between the side wall 22 and the connecting portion 23 through the notch 22c, and is sandwiched between the protruding piece 22e and the protruding piece 22f. Further, the protruding portion 61c enters between the side wall 22 and the connecting portion 23 through the notch 22d, and comes into contact with the side surface of the protruding piece 22g. As a result, the lock member 40 is supported by the upper rail 20 so as to be tiltable.

次に、アッパーレール２０及びロック部材４０への操作レバー７０の組み付けについて説明する。ロック部材４０をアッパーレール２０に組み付けた状態において、図９（Ａ）に示すように、操作レバー７０の操作部７３をアッパーレール２０とロック部材４０との間に差し込むようにして、操作レバー７０を組み付ける。このとき、操作部７３の先端がロック部材４０の突出片５５の近傍に位置し、凸部７３ａが延出部５６と対向するように位置する。また、図９（Ａ）に示すように、ロック部材４０の屈曲板部６３ｂが操作レバー７０の切欠き７３ｂに入り込む状態となる。また、図９（Ａ）に示すように、操作レバー７０の凸部７３ｃ，７３ｄが、アッパーレール２０の上壁２１に形成された突起部２１ａ，２１ｂにそれぞれ当接する。 Next, assembling the operation lever 70 to the upper rail 20 and the lock member 40 will be described. With the lock member 40 assembled to the upper rail 20, as shown in FIG. 9A, the operation lever 70 is inserted between the upper rail 20 and the lock member 40 by inserting the operation portion 73 of the operation lever 70. Assemble. At this time, the tip of the operating portion 73 is located near the protruding piece 55 of the lock member 40, and the convex portion 73a is positioned so as to face the extending portion 56. Further, as shown in FIG. 9A, the bent plate portion 63b of the lock member 40 is in a state of entering the notch 73b of the operating lever 70. Further, as shown in FIG. 9A, the convex portions 73c and 73d of the operating lever 70 come into contact with the protruding portions 21a and 21b formed on the upper wall 21 of the upper rail 20, respectively.

次に、シートスライド装置１０における操作レバー７０によるロック状態とロック解除状態の切り替え操作について説明する。操作レバー７０が操作されない場合には、図９（Ａ）に示すように、操作レバー７０及びロック部材が一定の姿勢を保持している。また、操作レバー７０はロック部材４０の延出部５６を押圧することなく、支持片６１などが弾性変形せず、ロック片５０は変位することがない。そして、ロック片５０の係合用片部５３は、図９（Ａ）に示すようにアッパーレール２０の係合用凹部２２ｂに係合するとともに、ロアレール３０の係合用凹部３６に係合している。これにより、アッパーレール２０とロアレール３０とが相対移動不能なロック状態となる。 Next, the operation of switching between the locked state and the unlocked state by the operating lever 70 in the seat slide device 10 will be described. When the operating lever 70 is not operated, the operating lever 70 and the lock member maintain a constant posture as shown in FIG. 9A. Further, the operating lever 70 does not press the extending portion 56 of the lock member 40, the support piece 61 and the like are not elastically deformed, and the lock piece 50 is not displaced. Then, as shown in FIG. 9A, the engaging piece portion 53 of the lock piece 50 is engaged with the engaging recess 22b of the upper rail 20 and is engaged with the engaging recess 36 of the lower rail 30. As a result, the upper rail 20 and the lower rail 30 are locked so that they cannot move relative to each other.

このようなロック部材４０によるロック状態において、操作レバー７０の把持部７１が上方向に移動するように操作されると、図９（Ｂ）に示すように、操作レバー７０の操作部７３は、先端側が下方に向かうように傾動する。具体的には、操作レバー７０の凸部７３ｄがアッパーレール２０の突起部２１ｂに支持され、切欠き７３ｂを構成する壁部がロック部材４０の規制部６３に支持された状態で操作部７３が下方に傾動することになる。そして、このように傾動する操作部７３の凸部７３ａがロック部材４０の延出部５６を下方に押圧することにより、支持片６１は、ロック片５０を介してロック片５０側が下方に向かうように弾性変形することになる。また、このように支持片６１が弾性変形することによって、図９（Ｂ）に示すように、ロック片５０が下方に移動することになり、ロック片５０と、アッパーレール２０の係合用凹部２２ｂ、及びロアレール３０の係合用凹部３６との係合が解除されて、アッパーレール２０とロアレール３０とが相対移動可能なロック解除状態になる。 In the locked state by the lock member 40, when the grip portion 71 of the operation lever 70 is operated so as to move upward, as shown in FIG. 9B, the operation portion 73 of the operation lever 70 is operated. Tilt so that the tip side faces downward. Specifically, the operating portion 73 is supported by the convex portion 73d of the operating lever 70 by the protruding portion 21b of the upper rail 20, and the wall portion forming the notch 73b is supported by the restricting portion 63 of the lock member 40. It will tilt downward. Then, the convex portion 73a of the operating portion 73 that tilts in this way presses the extending portion 56 of the lock member 40 downward, so that the support piece 61 is directed downward on the lock piece 50 side via the lock piece 50. Will be elastically deformed. Further, as the support piece 61 is elastically deformed in this way, as shown in FIG. 9B, the lock piece 50 moves downward, and the lock piece 50 and the engaging recess 22b of the upper rail 20 are engaged with each other. , And the lower rail 30 is disengaged from the engaging recess 36, and the upper rail 20 and the lower rail 30 are in an unlocked state in which they can move relative to each other.

そして、アッパーレール２０とロアレール３０との相対位置を調整した後に操作レバー７０の把持部７１を解放すると、支持片６１の弾性変形が元に戻り、ロック片５０が上方に移動することになる。そして、ロック片５０と、アッパーレール２０の係合用凹部２２ｂ、及びロアレール３０の係合用凹部３６とが係合されて、アッパーレール２０とロアレール３０とが再び相対移動不能なロック状態になる（図９（Ａ）、図１０（Ａ）参照）。 Then, when the grip portion 71 of the operating lever 70 is released after adjusting the relative positions of the upper rail 20 and the lower rail 30, the elastic deformation of the support piece 61 is restored, and the lock piece 50 moves upward. Then, the lock piece 50, the engaging recess 22b of the upper rail 20, and the engaging recess 36 of the lower rail 30 are engaged with each other, and the upper rail 20 and the lower rail 30 are locked again so that they cannot move relative to each other (FIG. FIG. 9 (A), see FIG. 10 (A)).

次に、シートスライド装置１０のロック状態におけるロック部材４０とロアレール３０との係合状態について、従来技術の構成と比較し、図１０、図１１を用いて説明する。図１０は、本実施形態に係るシートスライド装置１０におけるロック状態を説明する説明図であり、図１１は、従来技術に係るシートスライド装置におけるロック状態を説明する説明図である。 Next, the engaging state of the lock member 40 and the lower rail 30 in the locked state of the seat slide device 10 will be described with reference to FIGS. 10 and 11 in comparison with the configuration of the prior art. FIG. 10 is an explanatory diagram for explaining a locked state in the seat slide device 10 according to the present embodiment, and FIG. 11 is an explanatory diagram for explaining a locked state in the seat slide device 10 according to the prior art.

図１１に示す従来技術のシートスライド装置は、本実施形態に係るシートスライド装置１０とは異なり、図１１（Ｃ）に示されるように、係合用凹部１３６は、対向する側壁１３６Ｓと、側壁１３６Ｓ−側壁１３６Ｓ間の上壁１３６Ｔと、側壁１３６Ｓと上壁１３６Ｔとの間の半円弧状のコーナー部１３６Ｌと、からなる下側を開口する断面略Ｕ字状に形成される。このような構成において、図１１（Ｂ）、図１１（Ｃ）に示されるように部品管理精度を高めないと、板状片から成る係合用凸部１５３がＵ字の狭くなっている上端（上壁１３６Ｔ）近傍のコーナー部１３６Ｌに填まり込むことが考えられる。係合用凸部１５３が係合用凹部１３６のコーナー部１３６Ｌに填まり込むと、ロック状態からアンロック状態への切り換えが円滑に行えず、安定した噛み合いが行い得ない。また、設定された強度を保つためには、係合用凹部１３６の側壁１３６Ｓと、係合用凸部１５３の側壁１５３Ｓとの間の横方向クリアランスが各係合用凸部１５３においてばらつく必要がある。図１１（Ｂ）に示されるように、全ての係合用凸部１５３が係合用凹部１３６のコーナー部１３６Ｌに填まり込むと、横方向クリアランスがゼロとなり、設定された強度を保つことができなくなる。即ち、従来技術のシートスライド装置は、上述した係合用凸部１５３の係合用凹部１３６のコーナー部１３６Ｌに填まり込むことを避けるためには、係合用凹部１３６の上端（上壁１３６Ｔ）と係合用凸部とが図１１（Ａ）中に示す所定範囲Ｃ２に位置決めされる必要がある。このため、高い部品精度が必要になる。 The seat slide device of the prior art shown in FIG. 11 is different from the seat slide device 10 according to the present embodiment, and as shown in FIG. 11C, the engaging recess 136 has the side wall 136S and the side wall 136S facing each other. -The upper wall 136T between the side walls 136S and the semicircular corner portion 136L between the side wall 136S and the upper wall 136T are formed so as to have a substantially U-shaped cross section that opens the lower side. In such a configuration, unless the parts management accuracy is improved as shown in FIGS. 11 (B) and 11 (C), the engaging convex portion 153 made of the plate-shaped piece has a narrowed upper end (U-shape). It is conceivable that the corner portion 136L in the vicinity of the upper wall 136T) will be fitted. When the engaging convex portion 153 fits into the corner portion 136L of the engaging concave portion 136, the lock state cannot be smoothly switched to the unlocked state, and stable meshing cannot be performed. Further, in order to maintain the set strength, it is necessary that the lateral clearance between the side wall 136S of the engaging recess 136 and the side wall 153S of the engaging convex portion 153 varies in each engaging convex portion 153. As shown in FIG. 11B, when all the engaging convex portions 153 are fitted into the corner portions 136L of the engaging concave portions 136, the lateral clearance becomes zero and the set strength cannot be maintained. .. That is, the seat slide device of the prior art engages with the upper end (upper wall 136T) of the engaging recess 136 in order to avoid being fitted into the corner portion 136L of the engaging recess 136 of the engaging convex portion 153 described above. The combined convex portion needs to be positioned within the predetermined range C2 shown in FIG. 11 (A). Therefore, high component accuracy is required.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように係合用凹部３６は、対向する側壁３６Ｓと側壁３６Ｓ−側壁３６Ｓ間の上壁３６Ｔとからなる下側を開口する断面略コ字状に形成される。上壁３６Ｔには、側壁３６Ｓの上端３６ＳＵよりも下側に先端３６Ｔｔが位置する突部３６ＴＴが形成されている。突部３６ＴＴは下側を指向し突出している。上壁３６Ｔは半楕円弧状の突部３６ＴＴから構成される。側壁３６Ｓの上端３６ＳＵと突部３６ＴＴの先端３６Ｔｔとの間に距離ｃ１が設けられている。側壁３６Ｓの上端３６ＳＵと上壁３６Ｔとの間には半円弧状のコーナー部３６Ｌが設けられている。なお、側壁３６Ｓの上端３６ＳＵとは、平面状の側壁３６Ｓの上限を意味し、上端３６ＳＵより上の部分は曲面状（コーナー部３６Ｌ）になっている。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, the engaging recess 36 opens the lower side including the facing side wall 36S and the upper wall 36T between the side wall 36S and the side wall 36S. It is formed in a substantially U-shaped cross section. The upper wall 36T is formed with a protrusion 36TT having a tip 36Tt located below the upper end 36SU of the side wall 36S. The protrusion 36TT is directed downward and protrudes. The upper wall 36T is composed of a semi-elliptical arc-shaped protrusion 36TT. A distance c1 is provided between the upper end 36SU of the side wall 36S and the tip 36TT of the protrusion 36TT. A semicircular corner portion 36L is provided between the upper end 36SU of the side wall 36S and the upper wall 36T. The upper end 36SU of the side wall 36S means the upper limit of the flat side wall 36S, and the portion above the upper end 36SU is curved (corner portion 36L).

このため、本実施形態に係るシートスライド装置１０では、部品管理精度を緩和し、図１０（Ｂ）に示すように、係合用片部５３が係合用凹部３６、即ち、突部３６ＴＴの先端３６Ｔｔに接しても、図１０（Ｃ）に示される係合用片部５３の上面５３Ｔが係合用凹部３６の側壁３６Ｓの上端３６ＳＵよりも低い位置にある。このため、係合用片部５３が係合用凹部３６に填まり込むことが無い。衝突時に設定された強度を保つことができる。また、部品管理精度を緩和しても、ロック状態とアンロック状態と円滑に切り換え得る。高い部品精度が要求されない。 Therefore, in the seat slide device 10 according to the present embodiment, the parts management accuracy is relaxed, and as shown in FIG. 10B, the engaging piece portion 53 has an engaging recess 36, that is, the tip 36TT of the protrusion 36TT. The upper surface 53T of the engaging piece 53 shown in FIG. 10C is lower than the upper end 36SU of the side wall 36S of the engaging recess 36. Therefore, the engaging piece 53 does not fit into the engaging recess 36. The set strength can be maintained at the time of collision. Further, even if the parts management accuracy is relaxed, the locked state and the unlocked state can be smoothly switched. High component accuracy is not required.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、係合用片部５３が係合用凹部３６の突部３６ＴＴの先端３６Ｔｔに接する時、係合用片部５３の上面５３Ｔが係合用凹部３６の側壁３６Ｓの上端３６ＳＵよりも低い位置にある。このため、係合用片部５３が係合用凹部３６に填まり込むことが無い。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, when the engaging piece 53 comes into contact with the tip 36TT of the protrusion 36TT of the engaging recess 36, the upper surface of the engaging piece 53 The 53T is located lower than the upper end 36SU of the side wall 36S of the engaging recess 36. Therefore, the engaging piece 53 does not fit into the engaging recess 36.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、係合用片部５３が係合用凹部３６の突部３６ＴＴの先端３６Ｔｔに接する時、突部３６ＴＴの両側にコーナー部３６Ｌにより形成される隙間が保持される。車両衝突の際に係合用片部５３が変形しても、側壁３６Ｓと当接するため、ロック状態を保つことができる。ロック状態を保つことができる。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, when the engaging piece 53 comes into contact with the tip 36TT of the protrusion 36TT of the engaging recess 36, the corners are cornered on both sides of the protrusion 36TT. The gap formed by the portion 36L is retained. Even if the engaging piece 53 is deformed during a vehicle collision, it comes into contact with the side wall 36S, so that the locked state can be maintained. It can be kept locked.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、係合用片部５３が係合用凹部３６の突部３６ＴＴの先端３６Ｔｔに接する時、１点での接触となる。面接触或いは複数点での接触よりも１点での接触の方が動作の信頼性が高い。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, when the engaging piece 53 comes into contact with the tip 36TT of the protrusion 36TT of the engaging recess 36, the contact is made at one point. .. The operation reliability is higher in the one-point contact than in the surface contact or the multiple-point contact.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、係合用片部５３が係合用凹部３６の突部３６ＴＴの先端３６Ｔｔに接する時、係合用片部５３の上面５３Ｔと係合用凹部３６の上壁３６Ｔまでの最大距離ｔ１は、係合用片部５３の厚みｔ２よりも小さい。車両衝突の際に係合用片部５３が変形しても、隙間に入り込まず、側壁３６Ｓと当接するため、ロック状態を保つことができる。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, when the engaging piece 53 comes into contact with the tip 36TT of the protrusion 36TT of the engaging recess 36, the upper surface of the engaging piece 53 The maximum distance t1 between the 53T and the upper wall 36T of the engaging recess 36 is smaller than the thickness t2 of the engaging piece 53. Even if the engaging piece 53 is deformed during a vehicle collision, it does not enter the gap and comes into contact with the side wall 36S, so that the locked state can be maintained.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、突部３６ＴＴを形成する曲線の曲率は、コーナー部３６Ｌを形成する曲線の曲率の２倍以上、３倍以下であることが望ましい。例えば、突部３６ＴＴを形成する曲線の曲率は１．３ｍｍ、コーナー部３６Ｌを形成する曲線の曲率は０．５±０．１ｍｍである。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, the curvature of the curve forming the protrusion 36TT is twice or more and three times or less the curvature of the curve forming the corner portion 36L. Is desirable. For example, the curvature of the curve forming the protrusion 36TT is 1.3 mm, and the curvature of the curve forming the corner portion 36L is 0.5 ± 0.1 mm.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、コーナー部３６Ｌを形成する曲率の円弧ＣＲ２の中心ｃ２が、係合用凹部３６の側壁３６Ｓの上端３６ＳＵよりも低い位置にある。このため、係合用片部５３が係合用凹部３６に填まり込むことが無い。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, the center c2 of the arc CR2 having a curvature forming the corner portion 36L is lower than the upper end 36SU of the side wall 36S of the engaging recess 36. In position. Therefore, the engaging piece 53 does not fit into the engaging recess 36.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、コーナー部３６Ｌを形成する曲率の円弧ＣＲ２の中心ｃ２が、係合用凹部３６の突部３６ＴＴの先端３６Ｔｔより高い位置にある。係合用凹部３６の剛性の低下を抑制できる。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, the center c2 of the arc CR2 having a curvature forming the corner portion 36L is higher than the tip 36Tt of the protrusion 36TT of the engaging recess 36. In position. It is possible to suppress a decrease in the rigidity of the engaging recess 36.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、コーナー部３６Ｌを形成する曲率の円弧ＣＲ２の半径ｒが、係合用凹部３６の突部３６ＴＴを形成する曲率の円弧ＣＲ１の半径Ｒよりも小さい。このため、係合用片部５３が係合用凹部３６に填まり込むことを確実に抑制できる。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, the radius r of the arc CR2 having the curvature forming the corner portion 36L has the curvature forming the protrusion 36TT of the engaging recess 36. It is smaller than the radius R of the arc CR1. Therefore, it is possible to reliably prevent the engaging piece 53 from being fitted into the engaging recess 36.

本実施形態に係るシートスライド装置１０では、図１０（Ｃ）に示されるように、係合用凹部３６の突部３６ＴＴを形成する曲率の円弧ＣＲ１の半径２倍よりも、係合用片部５３のシートスライド方向への幅Ｂが大きい。係合用凹部３６の剛性の低下を抑制でき、係合用片部５３の剛性を高めることができる。 In the seat slide device 10 according to the present embodiment, as shown in FIG. 10C, the engaging piece portion 53 has a radius of twice the radius of the arc CR1 having a curvature forming the protrusion 36TT of the engaging recess 36. The width B in the seat slide direction is large. It is possible to suppress a decrease in the rigidity of the engaging recess 36 and increase the rigidity of the engaging piece 53.

本実施形態に係るシートスライド装置１０では、図１０（Ａ）、図１０（Ｃ）に示されるように、係合用凹部３６と係合用凹部３６との間の側壁３７の底面は、車両後方に向かって水平方向に対して５°乃至２０°程度上がるの勾配があることが、ロックへの移行が容易になり好適である。また、係合用凹部３６の側壁３６Ｓも、下側に向かって開く１°乃至３°程度のテーパが設けられることが、ロックへの移行が容易になり好適である。 In the seat slide device 10 according to the present embodiment, as shown in FIGS. 10A and 10C, the bottom surface of the side wall 37 between the engaging recess 36 and the engaging recess 36 is located at the rear of the vehicle. It is preferable that there is a gradient that rises by about 5 ° to 20 ° with respect to the horizontal direction because the transition to the lock is facilitated. Further, it is preferable that the side wall 36S of the engaging recess 36 is also provided with a taper of about 1 ° to 3 ° that opens downward, which facilitates the transition to the lock.

なお、本発明は上記実施形態に限定されるものではなく、以下のように具体化してもよく、その場合でも、上記実施形態と同等の作用・効果が得られる。
（１）係合用凹部３６の上壁３６Ｔは半楕円弧状の突部３６ＴＴから構成されなくとも、上壁が下方を指向する突部を備える構成であってもよい。 The present invention is not limited to the above embodiment, and may be embodied as follows, and even in that case, the same actions and effects as those of the above embodiment can be obtained.
(1) The upper wall 36T of the engaging recess 36 does not have to be composed of a semi-elliptical arc-shaped protrusion 36TT, but may have a structure in which the upper wall has a protrusion pointing downward.

１０…シートスライド装置
２０…アッパーレール（アッパーレール部材）
３０…ロアレール（ロアレール部材）
３６…係合用凹部
３６Ｓ…側壁
３６ＳＵ…上端
３６Ｔ…上壁
３６Ｔｔ…先端
３６ＴＴ…突部
４０…ロック部材
５３…係合用片部
７０…操作レバー（操作部材） 10 ... Seat slide device 20 ... Upper rail (upper rail member)
30 ... Lower rail (lower rail member)
36 ... Engagement recess 36S ... Side wall 36SU ... Upper end 36T ... Upper wall 36Tt ... Tip 36TT ... Protrusion 40 ... Lock member 53 ... Engagement piece 70 ... Operation lever (operation member)

Claims

A lower rail member that is fixed to the vehicle body and has a plurality of engaging recesses formed at equal intervals along the longitudinal direction.
An upper rail member that is fixed to the seat and slidably provided in the longitudinal direction with respect to the lower rail member,
A lock member supported by the upper rail member and having a plurality of engaging pieces that can be engaged with and disengaged from each of the plurality of engaging recesses.
An operating member that controls engagement / disengagement of the engaging piece and the engaging recess,
It is a seat slide device equipped with
The plurality of engaging recesses are formed in a substantially U-shaped cross section that opens a lower side including an opposing side wall and an upper wall between the side walls.
A seat slide device characterized in that the upper wall is formed with a protrusion that faces downward and has a tip located below the upper end of the side wall.

The seat slide device according to claim 1, wherein the plurality of engaging pieces are composed of a piece between a plurality of rectangular through holes formed in a plate-shaped member.

The first aspect of claim 1, wherein when the engaging piece is in contact with the tip of the protrusion of the engaging recess, the upper surface of the engaging piece is lower than the upper end of the side wall of the engaging recess. Seat slide device.

The seat slide device according to claim 1, wherein when the engaging piece is in contact with the tip of the protrusion of the engaging recess, gaps are held on both sides of the protrusion.

The seat slide device according to claim 1, wherein when the engaging piece is in contact with the tip of the protrusion of the engaging recess, the contact is at a point.

When the engaging piece comes into contact with the tip of the protrusion of the engaging recess, the maximum distance between the upper surface of the engaging piece and the upper wall of the engaging recess is smaller than the thickness of the engaging piece. The seat slide device according to claim 1.

The engaging recess is provided with a semicircular corner between the side wall and the upper wall.
The seat slide device according to claim 1, wherein the curvature of the curve forming the protruding portion is twice or more and three times or less the curvature of the curve forming the corner portion.

The engaging recess is provided with a semicircular corner between the side wall and the upper wall.
The seat slide device according to claim 1, wherein the center of the arc of curvature forming the corner portion is located at a position lower than the upper end of the side wall of the engaging recess.

The seat slide device according to claim 8, wherein the center of the arc of curvature forming the corner portion is located at a position higher than the tip of the protrusion of the engaging recess.

The seat slide device according to claim 8, wherein the radius of the arc of curvature forming the corner portion is smaller than the radius of the arc of curvature forming the protrusion of the engaging recess.

The seat slide device according to claim 10, wherein the width of the engaging piece in the seat slide direction is larger than twice the radius of the arc having a curvature forming the protrusion of the engaging recess.