JPH0115417B2 - - Google Patents

Info

Publication number
JPH0115417B2
JPH0115417B2 JP56028675A JP2867581A JPH0115417B2 JP H0115417 B2 JPH0115417 B2 JP H0115417B2 JP 56028675 A JP56028675 A JP 56028675A JP 2867581 A JP2867581 A JP 2867581A JP H0115417 B2 JPH0115417 B2 JP H0115417B2
Authority
JP
Japan
Prior art keywords
link
seat back
tension
seat
high seat
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
Application number
JP56028675A
Other languages
Japanese (ja)
Other versions
JPS57144136A (en
Inventor
Hiroshi Yanagisawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tachi S Co Ltd
Original Assignee
Tachi S Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tachi S Co Ltd filed Critical Tachi S Co Ltd
Priority to JP2867581A priority Critical patent/JPS57144136A/en
Publication of JPS57144136A publication Critical patent/JPS57144136A/en
Publication of JPH0115417B2 publication Critical patent/JPH0115417B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/38—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles specially constructed for use on tractors or like off-road vehicles
    • 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
    • B60N2/20—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 tiltable, e.g. to permit easy access
    • 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
    • B60N2/24—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles
    • B60N2/38—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles for particular purposes or particular vehicles specially constructed for use on tractors or like off-road vehicles
    • B60N2/39—Seats tiltable to compensate for roll inclination of vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Seats For Vehicles (AREA)

Description

【発明の詳細な説明】 本発明はトラクター、フオークリフトなどの産
業用車両に設けるシート（座席）に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat provided in an industrial vehicle such as a tractor or a forklift.

従来この種のシートにおけるシートバツク（座
席の背凭部）は着座者の腰部のみを支持するいわ
ゆるロウシートバツクで、着座状態において後方
作業、例えばシートの後方に設けた各種の油圧装
置の操作作業などを行ない易いようにしている。
従つて、悪路、或いは一般道路を走行する際、着
座者（運転者）の背、頭部が何らシートに支持さ
れていないため、着座状態（運転体勢）が頗る不
安定で、運転操作を確実に行なうことができない
し、また、トラクターによる耕うん作業などが的
確に行なえないし、しかも疲労度が一般車両に座
乗した場合に比べ極めて高い欠陥があつた。 Conventionally, the seat back (back part of the seat) in this type of seat is a so-called low seat back that supports only the lumbar region of the seated person, and is useful for rearward work while seated, such as operating various hydraulic devices installed at the rear of the seat. We make it easy to do.
Therefore, when driving on rough roads or on general roads, the back and head of the seated occupant (driver) are not supported by the seat in any way, making the seated position (driving position) extremely unstable, making it difficult to operate the vehicle. It was not possible to do it reliably, it was not possible to perform plowing work with a tractor properly, and the level of fatigue was extremely high compared to when sitting in a regular vehicle.

本発明は斯様な欠陥を除去することを目的とし
たものである。 The present invention aims to eliminate such defects.

（構成） 以上の目的を達成するための本発明は、着座者
の腰部を支持するロウシートバツクｂに、該ロウ
シートバツクｂと別体で着座者の背部を支持する
ハイシートバツクａを同一長さの平行リンク２
０，２０′で連結して支持すると共に、その一方
のリンク２０の上端と他方のリンク２０′の下端、
一方のリンク２０の下端と他方のリンク２０′の
上端とに夫々同一の張力を有する引張りバネ２
１，２１′をＸ字状に張架して、ハイシートバツ
クａを左右方向に移動自在に取付けてなることを
特徴とするものである。(Structure) To achieve the above object, the present invention includes a low seat bag b that supports the lumbar region of the seated person, and a high seat back a that supports the back of the seated person, which is separate from the low seat back b. length parallel link 2
0,20', and the upper end of one link 20 and the lower end of the other link 20',
A tension spring 2 having the same tension at the lower end of one link 20 and the upper end of the other link 20'.
1 and 21' are stretched in an X-shape, and a high seat bag a is attached so as to be movable in the left-right direction.

（実施例） 以下、本発明の一実施例を第１図乃至第３図に
基づいて説明する。(Example) Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.

図中ａは着座者の背部及び頭部を支持するハイ
シートバツク、ｂは着座者の腰部を支持するロウ
シートバツクで、このロウシートバツクｂに対し
て前記ハイシートバツクａが同一の長さを有する
平行リンク２０，２０′によつて左右方向に移動
可能に支持されており、ロウシートバツクはシー
トクツシヨン側に固定されている。 In the figure, a is a high seat back that supports the back and head of the seated person, and b is a low seat back that supports the waist of the seated person, and the high seat back a has the same length as the low seat back b. The row seat bag is fixed to the seat cushion side.

前記ハイシートバツクａとロウシートバツクｂ
とを連結するリンク２０，２０′は両シートバツ
クａ，ｂにして平行四辺形を呈するように配設さ
れ、また、このリンク２０，２０′に引張りバネ
２１，２１′をＸ字状に張架する。即ち、一方の
リンク２０の上端と他方のリンク２０′の下端と
に引張りコイルバネ２１を張架し、他方のリンク
２０′の上端と、一方のリンク２０の下端とに前
記引張りバネ２１と同一の引張りバネ２１′を張
架する。図中２２，２２，２２，２２はリンク２
０，２０′の端末をハイシートバツクａ、ロウシ
ートバツクｂに回動自在に枢着する軸を示す。 The high seat bag a and the low seat bag b
Links 20 and 20' connecting the seat backs a and b are arranged so as to form a parallelogram, and tension springs 21 and 21' are stretched in an X-shape to these links 20 and 20'. do. That is, a tension coil spring 21 is stretched between the upper end of one link 20 and the lower end of the other link 20', and the same tension spring 21 is installed between the upper end of the other link 20' and the lower end of one link 20. Tension the tension spring 21'. In the figure, 22, 22, 22, 22 is link 2
0 and 20' are rotatably connected to the high seat bag a and the low seat bag b.

斯して、第２図、第３図に示すように、ハイシ
ートバツクａの使用状態においては、二本の引張
りバネ２１，２１′の張力が両リンク２０，２
０′に対して逆方向に作用するため、ハイシート
バツクａを所定位置である使用状態に保持する。 Thus, as shown in FIGS. 2 and 3, when the high seat bag a is in use, the tension of the two tension springs 21, 21' is equal to the tension of both links 20, 2.
Since it acts in the opposite direction to 0', it holds the high seat bag a in a predetermined position, ie, in use.

そして、第２図二点鎖線に示すようにハイシー
トバツクａを右側に着座者が肘で押動すると、リ
ンク２０，２０′は夫々の下端を中心に傾動して、
ハイシートバツクａは右側に移動し、この移動状
態はハイシートバツクａの自重等によつて保持さ
れる。これを、第４図によつて説明する。ハイシ
ートバツクａを右側に移動した場合（第２図二点
鎖線）には、左側のリンク２０の上端が、右側の
リンク２０′の垂直状に起立状態の位置（第４図
点線）に対して右側に位置する。そのため、右側
のリンク２０′の下端と、左側のリンク２０の上
端とに架張している引張りバネ２１の張力F1は
左側のリンク２０を倒す方向（下向き）に作用す
る。一方、左側のリンク２０の下端と、右側のリ
ンク２０′の上端とに架張している引張りバネ２
１′の張力F2は右側のリンク２０′を起こす方向
（上向き）に作用し、この張力（F2）は前記引張
りバネ２１による下向きの力に対して大になる。
しかし乍ら、前記ハイシートバツクａは前記リン
ク２０，２０′に支持されている。そして、この
ハイシートバツクａは所定の重量があり、この重
量が両リンク２０，２０′に対して倒す方向（下
向き）の荷重（F3）に作用する。 When the seated person pushes the high seat bag a to the right with his/her elbow as shown by the two-dot chain line in FIG. 2, the links 20 and 20' tilt around their respective lower ends.
The high seat bag a moves to the right, and this moving state is maintained by the own weight of the high seat bag a. This will be explained with reference to FIG. When the high seat bag a is moved to the right (double-dashed line in Figure 2), the upper end of the left link 20 is in the vertically upright position of the right link 20' (dotted line in Figure 4). It is located on the right side. Therefore, the tension force F 1 of the tension spring 21 that is stretched between the lower end of the right link 20' and the upper end of the left link 20 acts in a direction to tilt the left link 20 (downward). On the other hand, a tension spring 2 is stretched between the lower end of the left link 20 and the upper end of the right link 20'.
1' acts in a direction (upward) to raise the right link 20', and this tension (F 2 ) is greater than the downward force exerted by the tension spring 21.
However, the high seat bag a is supported by the links 20, 20'. This high seat bag a has a predetermined weight, and this weight acts on both links 20 and 20' with a load (F 3 ) in the direction of tilting (downward).

従つて、前記F1＋F3＞F2になるため、ハイシ
ートバツクａは右方向に移動した状態を保持す
る。 Therefore, the above-mentioned F 1 +F 3 >F 2 holds, so the high seat back a maintains the state of moving to the right.

なお、図面において左方向にハイシートバツク
ａを移動するには、前記と逆方向にハイシートバ
ツクａを押動すれば、ハイシートバツクａが左側
に移動し、その状態が保持される。 In order to move the high seat back a to the left in the drawing, by pushing the high seat back a in the opposite direction to the above, the high seat back a moves to the left and maintains that state.

（効果） 本発明は叙上の如く構成したから以下の効果を
有する。(Effects) Since the present invention is constructed as described above, it has the following effects.

(1) ハイシートバツクを左又は右方向に着座状態
で肘で押動することにより、ハイシートバツク
が左又は右方向に移動できるため、ロウシート
バツクの後方に設けた各種の油圧装置などの操
作が行なえる。そして、斯る操作終了後、ハイ
シートバツクを逆方向に押動することにより元
の位置に復帰するため、ハイシートバツクをシ
ートの一部として、即ち、ハイシートバツクに
着座者の背部、頭部を支持させることができ前
記従来品の不具合を除去できる。(1) By pushing the high seat back to the left or right with your elbow while seated, you can move the high seat back to the left or right. Can be operated. After this operation is completed, the high seat bag is pushed in the opposite direction to return to its original position. The above-mentioned problems of the conventional products can be eliminated.

(2) ロウシートバツクにハイシートバツクを二本
の同一の長さの平行リンクで連結し、この二本
のリンクにＸ字状に同一の引張りバネを配設し
ているので、ハイシートバツクを左又は右方向
側に移動した際に、一方の引張りバネの張力が
ハイシートバツクを移動した状態に保持する。
そのため、ロツク機構などを設ける必要がない
ため、構造が簡単で低原価で提供できる。(2) The high seat bag is connected to the low seat bag with two parallel links of the same length, and the same tension springs are arranged in an X-shape on these two links, so the high seat bag When the high seat back is moved to the left or right, the tension of one of the tension springs holds the high seat bag in the moved state.
Therefore, since there is no need to provide a locking mechanism or the like, the structure is simple and can be provided at low cost.

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

第１図は本発明に係る産業用車両シートの使用
状態を示す斜視図、第２図は要部の斜視図、第３
図は同正面図、第４図はハイシートバツクを移動
した状態の説明図である。 図中、ａはハイシートバツク、ｂはロウシート
バツク、２０，２０′はリンク、２１，２１′は引
張りバネを夫々示す。 FIG. 1 is a perspective view showing how the industrial vehicle seat according to the present invention is used, FIG. 2 is a perspective view of the main parts, and FIG.
The figure is a front view of the same, and FIG. 4 is an explanatory view of the state in which the high seat bag is moved. In the figure, a is a high seat bag, b is a low seat bag, 20 and 20' are links, and 21 and 21' are tension springs, respectively.

Claims (1)

【特許請求の範囲】[Claims] １ 着座者の腰部を支持するロウシートバツクｂ
に、該ロウシートバツクｂと別体で着座者の背部
を支持するハイシートバツクａを同一長さの平行
リンク２０，２０′で連結して支持すると共に、
その一方のリンク２０の上端と他方のリンク２
０′の下端及び一方のリンク２０の下端と他方の
リンク２０′の上端とに、夫々同一の張力を有す
る引張りバネ２１，２１′をＸ字状に張架して、
ハイシートバツクａを左右方向に移動自在に取付
けてなることを特徴とする産業用車両シート。1 Row seat back b that supports the lumbar region of the seated person
In addition, a high seat back A, which supports the back of the seated person separately from the low seat back B, is connected and supported by parallel links 20 and 20' of the same length, and
The upper end of one link 20 and the other link 2
0', the lower end of one link 20, and the upper end of the other link 20', tension springs 21, 21' having the same tension, respectively, are stretched in an X shape,
An industrial vehicle seat characterized by having a high seat back A mounted so as to be movable in the left and right direction.
JP2867581A 1981-02-28 1981-02-28 Industrial vehicle seat Granted JPS57144136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2867581A JPS57144136A (en) 1981-02-28 1981-02-28 Industrial vehicle seat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2867581A JPS57144136A (en) 1981-02-28 1981-02-28 Industrial vehicle seat

Publications (2)

Publication Number Publication Date
JPS57144136A JPS57144136A (en) 1982-09-06
JPH0115417B2 true JPH0115417B2 (en) 1989-03-17

Family

ID=12255066

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2867581A Granted JPS57144136A (en) 1981-02-28 1981-02-28 Industrial vehicle seat

Country Status (1)

Country Link
JP (1) JPS57144136A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995002521A1 (en) * 1993-07-16 1995-01-26 Harald Kutzke Steerable, muscle- or motor-powered light vehicle with the wheels in line or opposite each other
US6059363A (en) * 1997-04-30 2000-05-09 Haworth, Inc. Chairback with side torsional movement
GB2457087A (en) * 2008-02-04 2009-08-05 Valtra Oy Ab Vehicle seat
JP5855614B2 (en) * 2013-09-02 2016-02-09 トヨタ紡織株式会社 Vehicle seat
JP7755252B2 (en) * 2021-11-10 2025-10-16 株式会社内田洋行 chair

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50111822U (en) * 1974-02-22 1975-09-11
JPS5758019Y2 (en) * 1979-05-02 1982-12-13
JPS5777044U (en) * 1980-10-30 1982-05-12

Also Published As

Publication number Publication date
JPS57144136A (en) 1982-09-06

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