JPH0323398Y2 - - Google Patents
Info
- Publication number
- JPH0323398Y2 JPH0323398Y2 JP14257184U JP14257184U JPH0323398Y2 JP H0323398 Y2 JPH0323398 Y2 JP H0323398Y2 JP 14257184 U JP14257184 U JP 14257184U JP 14257184 U JP14257184 U JP 14257184U JP H0323398 Y2 JPH0323398 Y2 JP H0323398Y2
- Authority
- JP
- Japan
- Prior art keywords
- lock bar
- shaft
- support
- support hole
- shaft support
- 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
Links
- 238000004804 winding Methods 0.000 claims description 16
- 230000000694 effects Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
Landscapes
- Automotive Seat Belt Assembly (AREA)
Description
【考案の詳細な説明】
[産業上の分野]
本考案は車両緊急時の乗員保護用シートベルト
装置に用いられ、車両緊急時に巻取軸の回転を停
止させるためのロツクバーを支持させる巻取装置
用ロツクバー支持構造に関する。[Detailed description of the invention] [Industrial field] This invention is used in a seat belt device for protecting occupants in a vehicle emergency, and is a winding device that supports a lock bar for stopping rotation of a winding shaft in a vehicle emergency. This invention relates to a lock bar support structure.
[背景技術及び解決すべき事項]
シートベルト装置では乗員拘束用ウエビングの
一端が巻取装置へ巻取られている。この巻取装置
では巻取軸へウエビングの一端が巻取られ、この
巻取軸に固着されたラチエツトホイルが車両緊急
時にロツクバーとかみ合うことによりウエビング
の引出回転が停止されるようになつている。[Background Art and Issues to be Solved] In a seat belt device, one end of the webbing for restraining an occupant is wound onto a winding device. In this winding device, one end of the webbing is wound onto a winding shaft, and a ratchet wheel fixed to the winding shaft engages with a lock bar in the event of a vehicle emergency, thereby stopping the webbing from being pulled out.
第3図には乗員がウエビングを装着した後にロ
ツクバー10がラチエツトホイル12方向へ付勢
され、これによつて車両緊急時に巻取軸14のウ
エビング引出回転が停止され、ウエビング16に
よつて乗員を拘束状態とさせ巻取装置(自動ロツ
ク機構付巻取装置,ALRと称される)が示され
ている。 FIG. 3 shows that after the occupant has attached the webbing, the lock bar 10 is biased toward the ratchet wheel 12, thereby stopping the webbing pull-out rotation of the take-up shaft 14 in the event of a vehicle emergency, and restraining the occupant by the webbing 16. A retractor (referred to as an automatic lock retractor, ALR) is shown.
この巻取装置ではフレーム18の両側部に設け
られる脚板20,22へ略三角形の軸支孔24,
26がそれぞれ形成されており、ロツクバー10
の一端がこの軸支孔24,26の三角形頂点へ当
接されてこの三角形頂点付近を中心に軸支される
構成である。 In this winding device, substantially triangular shaft support holes 24 are provided in the leg plates 20 and 22 provided on both sides of the frame 18.
26 are formed respectively, and the lock bar 10
One end of the shaft is brought into contact with the triangular vertices of the shaft support holes 24 and 26, and the shaft is pivotally supported around the triangular vertices.
このロツクバー10では一端へ脚板20との間
にねじりコイルばね28が掛け渡され、これによ
つてロツクバー10の一端が軸支孔24の三角形
頂点方向(矢印A方向)へ付勢されるとともに軸
支孔24内の一方(矢印B方向)へ付勢されてラ
チエツトホイル12へとかみ合うようになつてい
る。 A torsion coil spring 28 is stretched between one end of the lock bar 10 and the leg plate 20, thereby biasing one end of the lock bar 10 toward the triangular apex of the shaft support hole 24 (in the direction of arrow A) and It is biased toward one side of the support hole 24 (in the direction of arrow B) and engages with the ratchet wheel 12.
ところがこのロツクバー10はねじりコイルば
ね28の付勢力によつて、反対側の軸支孔26へ
軸支される部分に三角形の底辺方向(矢印C方
向)への付勢力が作用することになる。このた
め、ロツクバー10の回転中心を正確に維持する
ためには、軸支孔24,26の内径寸法を正確に
維持する必要がある。しかし、フレーム18は厚
肉板材をプレス打ち抜きにより形成するため、正
確な寸法維持は不可能であり、プレス加工後に研
削作業等が必要になる。 However, due to the biasing force of the torsion coil spring 28, the lock bar 10 is biased toward the base of the triangle (in the direction of arrow C) on the portion that is pivoted to the shaft support hole 26 on the opposite side. Therefore, in order to accurately maintain the center of rotation of the lock bar 10, it is necessary to maintain the inner diameter dimensions of the shaft support holes 24 and 26 accurately. However, since the frame 18 is formed by press-punching a thick plate material, it is impossible to maintain accurate dimensions, and grinding work or the like is required after press-forming.
本考案は上記事実を考慮し、ロツクバーの軸支
孔の寸法精度を高精度に維持する必要がない巻取
装置用ロツクバー支持構造を得ることが目的であ
る。 The present invention takes the above-mentioned facts into account, and aims to provide a lock bar support structure for a winding device that does not require maintaining high dimensional accuracy of the shaft support hole of the lock bar.
[考案の概要及び作用]
本考案に係る巻取装置用ロツクバー志持構造で
は第1の軸支面及び前記第2の軸支面がロツクバ
ーの軸方向に見て互いにロツクバーの回転中心の
反対側に向かい合つて形成されている。[Overview and operation of the invention] In the lock bar supporting structure for a winding device according to the present invention, the first shaft support surface and the second shaft support surface are located on opposite sides of the rotation center of the lock bar when viewed in the axial direction of the lock bar. are formed facing each other.
従つてロツクバーを支持する軸支孔はその内径
寸法を高精度に維持する必要がないにも拘らず、
ロツクバーの正確な回転中心を得ることができる
ようになつている。 Therefore, although there is no need to maintain the inner diameter of the shaft support hole that supports the lock bar with high precision,
This makes it possible to obtain the exact center of rotation of the lock bar.
[考案の実施例]
第1図には本実施例が適用されたロツクバー支
持構造が示されている。フレーム30は厚肉板材
から形成されて取付ボルト(図示省略)によつて
車体へ固着されるようになつている。フレーム3
0の両側部から直角に屈曲され互いに平行に延長
される脚板32,34にはそれぞれ支持孔36,
38が形成され、これらへロツクバー40の両端
部付近が軸支されている。[Embodiment of the invention] FIG. 1 shows a lock bar support structure to which this embodiment is applied. The frame 30 is formed from a thick plate and is fixed to the vehicle body with mounting bolts (not shown). frame 3
Support holes 36, 34 are provided in the leg plates 32 and 34, which are bent at right angles from both sides of the 0 and extend parallel to each other.
38 are formed, and the vicinity of both ends of the lock bar 40 are pivotally supported to these.
このロツクバー40は脚板32,34の円孔4
2,44へ両端部付近が軸支される巻取軸46と
対応しており、巻取軸46へ固着されるラチエツ
トホイル48とかみ合い可能となつている。従つ
てロツクバー40がラチエツトホイル48とかみ
合うと、巻取軸46は一方向への回転が阻止され
巻付けられた乗員拘束用ウエビング50の引出回
転が停止される構成である。 This lock bar 40 is connected to the circular holes 4 in the leg plates 32 and 34.
2, 44 corresponds to a winding shaft 46 which is pivotally supported at both ends thereof, and is capable of engaging with a ratchet wheel 48 fixed to the winding shaft 46. Therefore, when the lock bar 40 engages with the ratchet wheel 48, the take-up shaft 46 is prevented from rotating in one direction, and the drawing rotation of the wrapped occupant restraint webbing 50 is stopped.
支持孔36から突出したロツクバー40の端部
には脚板32との間にねじりコイルばね52が介
在されている。 A torsion coil spring 52 is interposed between the end of the lock bar 40 protruding from the support hole 36 and the leg plate 32.
ここに支持孔36,38は第2図に示される如
くそれぞれ略三角形とされており、ロツクバー4
0の一端40Aを収容する支持孔36と他の一端
40Bを収容する支持孔38とはロツクバー40
の軸方向に見て互いに反対方向に形成されてお
り、かつ第1の軸支面としての三角形頂部36A
及び第2の軸支面としての三角形頂部38Aが重
なる配置となつている。すなわちロツクバー40
の一端40Aはその一側面が回転部としての当接
面40cとなつており、支持孔36の三角形頂部
36Aへ当接してロツクバー40の回転中心54
を定位置へ維持し、かつ一端40Bの側面である
回転部としての当接面40Dは支持孔38の三角
形頂部38Aへ当接されて回転中心54を定位置
へ維持している。 The support holes 36 and 38 are each approximately triangular in shape as shown in FIG.
The support hole 36 that accommodates one end 40A of the lock bar 40 and the support hole 38 that accommodates the other end 40B of the lock bar 40
The triangular top portions 36A are formed in mutually opposite directions when viewed in the axial direction, and serve as a first shaft support surface.
The triangular top portion 38A serving as the second shaft support surface is arranged to overlap. That is, lock bar 40
One side of the end 40A is a contact surface 40c serving as a rotating part, and contacts the triangular top part 36A of the support hole 36 to align the center of rotation 54 of the lock bar 40.
The abutment surface 40D, which is a side surface of one end 40B and serves as a rotating portion, is brought into contact with the triangular top 38A of the support hole 38 to maintain the center of rotation 54 in a fixed position.
ねじりコイルばね52は従来例と同様に一端4
0Aを当接面40Cが支持孔36の三角形頂部3
6Aへ当接する方向(矢印A方向)及びロツクバ
ー40をラチエツトホイル48へかみ合わせる方
向(矢印B方向)に付勢しており、かつ一端40
Bを一端40Aと反対方向(矢印C方向)に付勢
して当接面40Dを支持孔38の三角形頂部38
Aと当接させている。 The torsion coil spring 52 has one end 4 as in the conventional example.
0A and the contact surface 40C is the triangular top part 3 of the support hole 36
6A (in the direction of arrow A) and in the direction in which the lock bar 40 engages with the ratchet foil 48 (in the direction of arrow B), and one end 40
B is biased in the direction opposite to the one end 40A (in the direction of arrow C), and the contact surface 40D is pressed against the triangular top 38 of the support hole 38.
It is in contact with A.
従つてロツクバー40の回転中心54を所定位
置に配置させるためには、支持孔36,38の内
径寸法は関係なく、支持孔36,38の三角形頂
部36A,38Aが正確に配置されていればよい
ことになる。 Therefore, in order to locate the center of rotation 54 of the lock bar 40 at a predetermined position, the inner diameter dimensions of the support holes 36, 38 do not matter, as long as the triangular tops 36A, 38A of the support holes 36, 38 are accurately positioned. It turns out.
なお支持孔36,38の一部にはスリツト56
が延長されており、ロツクバー40を脚板32,
34間へ挿入する場合のガイド孔となつている。 Note that slits 56 are formed in some of the support holes 36 and 38.
is extended, and the lock bar 40 is connected to the leg plate 32,
This serves as a guide hole when inserting between 34 and 34.
脚板34の外側へ酌付けられ、巻取軸付勢用の
ぜんまいばね60を収容するばねカバー62には
一部に円弧状の案内片64が一体的に突出してお
り、この案内片64は第2図に示される如くその
付勢力で一端40Bを支持孔38の頂点へ当接さ
せるようになつている。しかし車両緊急時にロツ
クバー40へ大きな荷重が作用した場合には、こ
の案内片64が撓んで一端40Bを支持孔38の
庭辺付近へと当接可能とし、これによつて車両緊
急時の大きな荷重を支持できるようになつてい
る。 A spring cover 62 that is attached to the outside of the leg plate 34 and houses a mainspring spring 60 for biasing the winding shaft has an arc-shaped guide piece 64 integrally protruding from a part thereof. As shown in FIG. 2, the urging force causes one end 40B to abut against the apex of the support hole 38. However, when a large load is applied to the lock bar 40 in a vehicle emergency, this guide piece 64 is bent and one end 40B can be brought into contact with the vicinity of the support hole 38, thereby preventing a large load in a vehicle emergency. It is now possible to support
次に本実施例の作用を説明する。 Next, the operation of this embodiment will be explained.
ロツクバー40は支持孔36,スリツト56を
通して脚板32,34間へ挿入され、第1図に示
される如くねじりコイルばね52をロツクバー4
0と脚板32との間へ掛け渡すことによりフレー
ム30へ組付けられる。 The lock bar 40 is inserted between the leg plates 32 and 34 through the support hole 36 and the slit 56, and the torsion coil spring 52 is inserted into the lock bar 40 as shown in FIG.
0 and the leg plate 32 to be assembled to the frame 30.
図示しない制御機構は乗員がウエビングを装着
した後にロツクバー40をラチエツトホイル48
方向へと移動可能とし、これによつてロツクバー
40はねじりコイルばね52の付勢力でラチエツ
トホイル48をかみ合つて巻取軸46のウエビン
グ引出し方向回転を停止させる。 A control mechanism (not shown) moves the lock bar 40 to the ratchet wheel 48 after the occupant puts on the webbing.
As a result, the lock bar 40 engages the ratchet wheel 48 with the biasing force of the torsion coil spring 52, thereby stopping the rotation of the take-up shaft 46 in the webbing drawing direction.
従つて乗員が車両緊急時に衝突方向へ移動する
と、ウエビング50は引出し方向に力を受けるが
ロツクバー40は確実にラチエツトホイル48と
かみ合つてウエビング50の引出しを停止させる
ので、乗員の拘束状態が確保される。 Therefore, when the occupant moves in the direction of collision in a vehicle emergency, the webbing 50 receives a force in the pulling direction, but the lock bar 40 reliably engages with the ratchet wheel 48 to stop the webbing 50 from being pulled out, ensuring that the occupant is restrained. Ru.
ロツクバー40は当接面40Cが支持孔36の
三角形頂部36Aと、当接面40Dが支持孔38
の三角形頂部38Aとそれぞれ当接しているの
で、その回転中心54は常に一定位置にあり、ロ
ツクバー40の回転は円滑となりロツクバー40
の作動不良を生ずることはない。 The lock bar 40 has a contact surface 40C connected to the triangular top 36A of the support hole 36, and a contact surface 40D connected to the support hole 36.
Since the rotation center 54 is always in a fixed position, the rotation of the lock bar 40 is smooth and the lock bar 40 is in contact with the triangular apex 38A.
This will not cause any malfunction.
なお上記実施例においては、乗員のウエビング
装着後にロツクバーがラチエツトホイルへと付勢
される自動ロツク機構付巻取装置へ本考案が適用
された構成を示したが、本考案は車両緊急時にの
みロツクバーがラチエツトホイルとかみ合う構造
の巻取装置(ELRと称される)へも適用可能で
ある。この場合、上記実施例のねじりコイルばね
を省略することもできる。 In the above embodiment, the present invention has been applied to a take-up device with an automatic locking mechanism in which the lock bar is biased toward the ratchet wheel after the occupant attaches the webbing. It is also applicable to a winding device (referred to as an ELR) that engages with a ratchet wheel. In this case, the torsion coil spring of the above embodiment can be omitted.
[考案の効果]
以上説明した如く本考案に係る巻取装置用ロツ
クバー支持構造では、ロツクバーの軸支孔を軸方
向に見て三角形頂部36A及び三角形頂部38A
がロツクバーの回転中心の反対側へそれぞれ形成
されるようにしたので、ロツクバーの軸支孔の寸
法精度を高精度に維持する必要がない優れた効果
を有する。[Effect of the invention] As explained above, in the lock bar support structure for a winding device according to the present invention, the triangular top portion 36A and the triangular top portion 38A are
Since the lock bars are formed on opposite sides of the rotation center of the lock bar, there is an excellent effect that it is not necessary to maintain high dimensional accuracy of the shaft support hole of the lock bar.
第1図は本考案に係る巻取装置用ロツクバー支
持構造の分解斜視図、第2図はロツクバーを軸方
向に見た軸支孔との対応を示す側面図、第3図は
従来のロツクバー支持構造を示す斜視図である。
30……フレーム、32,34……脚板、3
6,38……支持孔、36A……三角形頂部(第
1の軸支面)、38A……三角形頂部(第2の軸
支面)、40……ロツクバー、40C,40D…
…当接面(回転部)、50……ウエビング、54
……回転中心。
Fig. 1 is an exploded perspective view of a lock bar support structure for a winding device according to the present invention, Fig. 2 is a side view showing the correspondence with the shaft support hole when the lock bar is viewed in the axial direction, and Fig. 3 is a conventional lock bar support. FIG. 3 is a perspective view showing the structure. 30... Frame, 32, 34... Leg plate, 3
6, 38... Support hole, 36A... Triangular top (first shaft support surface), 38A... Triangular top (second shaft support surface), 40... Lock bar, 40C, 40D...
...Abutting surface (rotating part), 50...Webbing, 54
……Rotation center.
Claims (1)
ロツクバーの両端部付近を各々軸支させる巻取装
置用ロツクバー支持構造であつて、 一方の前記フレーム脚板に形成された前記支持
孔には前記ロツクバーの一端部の回転部を回転時
に支持する第1の軸支面が形成され他方の前記フ
レーム脚板に形成された前記支持孔には前記ロツ
クバーの他端部の回転部を回転時に支持する第2
の軸支面が形成されており、前記第1の軸支面及
び前記第2の軸支面が前記ロツクバーの軸方向に
見て互いに前記ロツクバーの回転中心の反対側に
向かい合つて形成されていることを特徴とした巻
取装置用ロツクバー支持構造。[Claims for Utility Model Registration] A lock bar support structure for a winding device in which the vicinity of both ends of a lock bar is pivotally supported in support holes respectively formed in a pair of frame leg plates, the lock bar support structure being formed in one of the frame leg plates. The support hole is formed with a first shaft support surface that supports the rotating part at one end of the lock bar during rotation, and the support hole formed in the other frame leg plate is formed with a first shaft supporting surface that supports the rotating part at the other end of the lock bar. The second part that supports when rotating
A shaft support surface is formed, and the first shaft support surface and the second shaft support surface are formed facing opposite sides of the rotation center of the lock bar when viewed in the axial direction of the lock bar. A lock bar support structure for a take-up device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14257184U JPH0323398Y2 (en) | 1984-09-20 | 1984-09-20 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14257184U JPH0323398Y2 (en) | 1984-09-20 | 1984-09-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6156147U JPS6156147U (en) | 1986-04-15 |
JPH0323398Y2 true JPH0323398Y2 (en) | 1991-05-22 |
Family
ID=30700888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14257184U Expired JPH0323398Y2 (en) | 1984-09-20 | 1984-09-20 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0323398Y2 (en) |
-
1984
- 1984-09-20 JP JP14257184U patent/JPH0323398Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS6156147U (en) | 1986-04-15 |
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