JP2889894B2 - Screw type jack device - Google Patents
Screw type jack deviceInfo
- Publication number
- JP2889894B2 JP2889894B2 JP28790497A JP28790497A JP2889894B2 JP 2889894 B2 JP2889894 B2 JP 2889894B2 JP 28790497 A JP28790497 A JP 28790497A JP 28790497 A JP28790497 A JP 28790497A JP 2889894 B2 JP2889894 B2 JP 2889894B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- screw shaft
- furniture
- jack device
- shaft
- 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 - Lifetime
Links
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- Transmission Devices (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば家具の高さ
調整などに使用することのできるねじ式ジャッキ装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw jack device which can be used, for example, for adjusting the height of furniture.
【０００２】[0002]
【従来の技術】ねじ式ジャッキ装置は、相対的に接近離
間移動自在な２部材の一方に自転のみ可能に一端部が支
承された螺軸と、当該螺軸に螺嵌するように他方の部材
に設けられた雌ねじ体とから成り、前記螺軸の正逆回転
操作により前記２部材を相対的に接近離間移動させるよ
うにしたものであるが、前記２部材の相対的な接近離間
移動の行程限を設定する場合、両部材が相対的な接近離
間移動の行程限に達したとき、その相対移動方向におい
て互いに当接する当接部を両部材に設けていた。2. Description of the Related Art A screw-type jack device has a screw shaft having one end supported on one of two members which can move relatively close to and away from each other so as to be able to rotate only, and the other member is screwed onto the screw shaft. And a female screw body provided at the first and second members, and the two members are relatively moved toward and away from each other by the forward / reverse rotation operation of the screw shaft. When the limit is set, when the two members reach the stroke limit of the relative approach / separation movement, the contact portions that abut on each other in the relative movement direction are provided on both members.
【０００３】[0003]
【発明が解決しようとする課題】上記のような従来の構
成では、前記両部材が相対的な接近離間移動の行程限に
達して両部材の当接部が互いに当接したとき、螺軸の回
転操作抵抗が大きくなるので、ここで回転操作を終了さ
せれば良いが、螺軸の１回転でねじの１ピッチ分しか相
対移動しない２部材間の行程限での負荷抵抗の変化を正
確に捕らえて瞬時に回転操作を終了させることは現実的
に不可能であり、大抵の場合、螺軸の回転操作が殆ど無
理な状況になるまで回転操作を続けてしまうことにな
る。この結果、螺軸と雌ねじ体との噛み合い部を強力に
締め付けてしまうことになり、当該噛み合い部の焼き付
きが生じたり、次の逆回転操作が非常に困難になり、延
いては各部の破損や耐用寿命の低下につながっていた。In the above-mentioned conventional structure, when the two members reach the stroke limit of the relative approach / separation movement and the contact portions of the two members come into contact with each other, the screw shaft is moved. Since the rotation operation resistance becomes large, the rotation operation may be terminated here. However, the change in the load resistance at the stroke limit between the two members in which only one pitch of the screw is relatively moved by one rotation of the screw shaft can be accurately determined. It is practically impossible to end the rotation operation instantly after being caught, and in most cases, the rotation operation will be continued until the rotation operation of the screw shaft becomes almost impossible. As a result, the meshing portion between the screw shaft and the female screw body is strongly tightened, seizure of the meshing portion occurs, and the next reverse rotation operation becomes very difficult, which may lead to breakage or damage to each portion. The service life was reduced.
【０００４】[0004]
【課題を解決するための手段】本発明は上記のような従
来の問題点を解消し得るねじ式ジャッキ装置を提供する
ことを目的とするものであって、その手段を後述する実
施形態の参照符号を付して示すと、相対的に接近離間移
動自在な２部材（家具本体側部材３と据え付け用接地体
４）の一方に自転のみ可能に一端部が支承された螺軸１
７と、当該螺軸１７に螺嵌するように他方の部材に設け
られた雌ねじ体１８とから成り、前記螺軸１７の正逆回
転操作により前記２部材を相対的に接近離間移動させる
ようにしたねじ式ジャッキ装置であって、前記螺軸１７
の遊端には半径方向に突出する突起部４２が設けられ、
前記雌ねじ体１８が設けられた部材（据え付け用接地体
４）には、前記２部材の相対的接近離間移動の少なくと
も一方の行程端において、前記突起部４２の回転方向側
辺４２ａに当接して螺軸１７の回転を阻止する制止部４
６ａが設けられた構成となっている。SUMMARY OF THE INVENTION An object of the present invention is to provide a screw-type jack device which can solve the above-mentioned conventional problems. A screw shaft 1 having one end supported on one of two members (furniture body side member 3 and grounding member 4 for installation) that are relatively movable toward and away from each other is indicated by a reference numeral.
7 and a female screw body 18 provided on the other member so as to be screwed onto the screw shaft 17. The two members are relatively moved toward and away from each other by the forward and reverse rotation operation of the screw shaft 17. Screw jack device, wherein the screw shaft 17
The free end is provided with a projection 42 projecting in the radial direction,
At least one stroke end of the relative movement of the two members relative to the member provided with the female screw body 18 (the grounding member 4 for installation) is brought into contact with the rotational side 42a of the projection 42. Stopper 4 for preventing rotation of screw shaft 17
6a is provided.
【０００５】なお、上記構成の本発明装置を実施するに
際し、前記突起部４２は、前記螺軸１７の遊端に突設さ
れた回り止め用突部１７ｂに外嵌し且つねじ４１により
当該螺軸１７に固定された板材４０から突設することが
できる。また、前記雌ねじ体１８を備える部材（据え付
け用接地体４）には、前記螺軸１７に隣接して当該螺軸
１７と平行に板材４３を取り付け、この板材４３に、前
記螺軸１７の回転により螺旋状に移動する前記突起部４
２の移動経路と重なる部分に開口部４４を形成し、当該
開口部４４の前記螺軸軸心方向の端辺に、前記制止部４
６ａとなる段部４５ａを形成することができる。When the apparatus of the present invention having the above-described configuration is implemented, the projection 42 is externally fitted to a rotation-preventing projection 17 b projecting from the free end of the screw shaft 17 and is screwed by a screw 41. It can protrude from the plate material 40 fixed to the shaft 17. A plate 43 is attached to the member provided with the female screw body 18 (the grounding member 4 for installation) so as to be adjacent to the screw shaft 17 and parallel to the screw shaft 17. The protrusion 4 which moves spirally by the
An opening 44 is formed in a portion overlapping with the movement path 2 and the stopping portion 4 is formed at an end of the opening 44 in the direction of the axis of the screw shaft.
A step 45a that becomes 6a can be formed.
【０００６】[0006]
【発明の実施の形態】以下に本発明の一実施形態に係る
ねじ式ジャッキ装置を応用した家具の支持装置を添付図
に基づいて説明すると、図１Ａ、図２〜図４において、
１は家具本体２の底部に取り付けられた支持装置であ
る。当該支持装置１は、家具本体側部材３、据え付け用
接地体４、移動用車輪５、及びねじ式ジャッキ装置６と
から構成されている。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a perspective view of a furniture supporting apparatus to which a screw type jack device according to an embodiment of the present invention is applied.
1 is a support device attached to the bottom of the furniture body 2. The supporting device 1 includes a furniture body side member 3, an installation grounding body 4, a moving wheel 5, and a screw jack device 6.
【０００７】家具本体側部材３は、平面形状が矩形枠状
のもので、長さ方向と平行な両側枠材７ａ，７ｂと、両
側枠材７ａ，７ｂを両端と中央部とで互いに連結する連
結枠材８ａ〜８ｃと、両端の連結枠材８ａ，８ｂの内側
に隣接する位置で両側枠材７ａ，７ｂ間に架設された車
輪支持枠材９ａ，９ｂと、一端の連結枠材８ａと中央の
連結枠材８ｃとの中間位置で両側枠材７ａ，７ｂ間に架
設された螺軸支承枠材１０とから構成され、例えば前記
各連結枠材８ａ〜８ｃにおいて家具本体２の底部に取り
付けることができる。なお、両側枠材７ａ，７ｂと両端
の連結枠材８ａ，８ｂとには、平面形状が矩形の垂下囲
壁部１１が連設されている。The furniture body side member 3 has a rectangular frame shape in plan view, and connects both side frame members 7a, 7b parallel to the longitudinal direction, and connects the both side frame members 7a, 7b at both ends and a central portion. The connecting frame members 8a to 8c, the wheel supporting frame members 9a and 9b provided between the both side frame members 7a and 7b at positions adjacent to the inside of the connecting frame members 8a and 8b at both ends, and the connecting frame member 8a at one end. It is composed of a screw shaft support frame member 10 provided between both side frame members 7a and 7b at an intermediate position with respect to the center connection frame member 8c, and is attached to the bottom of the furniture body 2 at each of the connection frame members 8a to 8c. be able to. In addition, the hanging surrounding wall portion 11 having a rectangular planar shape is continuously provided between the both-side frame members 7a and 7b and the connecting frame members 8a and 8b at both ends.
【０００８】移動用車輪５は、前記家具本体側部材３に
おける各車輪支持枠材９ａ，９ｂの両端近傍位置の底側
にそれぞれ取り付けられた４つの自在車輪から成り、各
移動用車輪５の接地レベルは、前記家具本体側部材３の
下端レベル（垂下囲壁部１１の下端レベル）よりも若干
下側にある。The moving wheels 5 are composed of four universal wheels attached to the furniture body side member 3 at the bottoms near the both ends of the respective wheel supporting frame members 9a and 9b. The level is slightly lower than the lower end level of the furniture body side member 3 (the lower end level of the hanging surrounding wall portion 11).
【０００９】据え付け用接地体４は、前記家具本体側部
材３における垂下囲壁部１１の内側に昇降可能に嵌合す
る、平面形状が矩形枠状のもので、長さ方向と平行な両
側枠材１２ａ，１２ｂと、両側枠材１２ａ，１２ｂを両
端と中央部とで互いに連結する連結枠材１３ａ〜１３ｃ
と、前記家具本体側部材３における螺軸支持枠材１０の
真下位置で両側枠材１２ａ，１２ｂ間に架設された雌ね
じ体支持枠材１４とから構成され、両側枠材１２ａ，１
２ｂと両端の連結枠材１３ａ，１３ｂとには、前記家具
本体側部材３における垂下囲壁部１１の内側に沿うよう
に平面形状が矩形の起立囲壁部１５が連設されており、
この据え付け用接地体４が、その下端接地面４ａが前記
移動用車輪５の接地レベルよりも上方となる上昇限位置
から、図１Ｂ及び図５に示すように下端接地面４ａが移
動用車輪５の接地レベルよりも下方となる下降限位置ま
で下降したときに、前記家具本体側部材３における垂下
囲壁部１１の下側に隙間が生じないように構成してい
る。The mounting grounding member 4 has a rectangular frame shape in a planar shape, and is fitted into the interior of the hanging surrounding wall portion 11 of the furniture body side member 3 so as to be able to ascend and descend, and both side frame members parallel to the length direction. 12a, 12b and connecting frame members 13a to 13c for connecting both side frame members 12a, 12b to each other at both ends and a center portion.
And a female screw support frame 14 erected between the side frame members 12a and 12b at a position directly below the screw shaft support frame member 10 in the furniture body side member 3.
An upright enclosing wall portion 15 having a rectangular planar shape is continuously connected to 2b and the connecting frame members 13a and 13b at both ends so as to extend along the inside of the hanging enclosing wall portion 11 in the furniture body side member 3.
As shown in FIG. 1B and FIG. 5, the lower end contact surface 4 a of the mounting contact body 4 is moved from the uppermost position where the lower contact surface 4 a is higher than the contact level of the moving wheel 5. The lower part of the furniture body side member 3 is configured such that no gap is formed below the hanging surrounding wall portion 11 when it is lowered to a lower limit position which is lower than the grounding level.
【００１０】ねじ式ジャッキ装置６は、図６及び図７に
示すように、前記家具本体側部材３における螺軸支持枠
材１０の長さ方向中央位置（家具本体側部材３の巾方向
中央位置）に軸受け１６を介して自転のみ可能に上端部
が支持された垂直向きの１本の螺軸１７と、この螺軸１
７に螺嵌するように前記据え付け用接地体４における雌
ねじ体支持枠材１４の上側に固着された雌ねじ体１８と
から成り、第一リンク機構１９及び第二リンク機構２０
が併設されている。As shown in FIGS. 6 and 7, the screw type jack device 6 is provided at the center position in the longitudinal direction of the screw shaft support frame member 10 in the furniture body side member 3 (the width direction center position of the furniture body side member 3). ), A single vertically oriented screw shaft 17 whose upper end is supported so as to be able to rotate only via a bearing 16, and this screw shaft 1
And a female threaded body 18 secured to the upper side of the female threaded body support frame member 14 of the installation grounding body 4 so as to be screwed into the first grounding body 4.
Is attached.
【００１１】前記螺軸１７は、図６に示すように、家具
本体側部材３の上側に突出して、家具本体２内に露出す
る回転操作部１７ａを備え、回転操作ハンドルＨの嵌合
部Ｈａを前記螺軸１７の回転操作部１７ａに相対回転不
能に嵌合させた状態で当該回転操作ハンドルＨを家具本
体２内で回転操作することにより、螺軸１７を正逆任意
の方向に回転駆動することができる。勿論、使用しない
前記回転操作ハンドルＨは、取り外しておくことができ
る。As shown in FIG. 6, the screw shaft 17 has a rotation operation portion 17a projecting above the furniture body side member 3 and exposed inside the furniture body 2, and a fitting portion Ha of the rotation operation handle H. The rotary operation handle H is rotated in the furniture main body 2 in a state where the rotary operation handle H is fitted into the rotary operation portion 17a of the screw shaft 17 so as to be relatively non-rotatable. can do. Of course, the rotation operation handle H that is not used can be removed.
【００１２】第一リンク機構１９は、図１Ａに示すよう
に、２組の２連リンク２１，２２と連動手段２６から構
成され、第二リンク機構２０は、３組の２連リンク２３
〜２５と連動手段２７から構成されている。しかして、
第一リンク機構１９の２連リンク２１は、家具本体側部
材３における螺軸支持枠材１０の連結枠材８ａ側に隣接
する位置と据え付け用接地体４における雌ねじ体支持枠
材１４の連結枠材１３ａ側に隣接する位置との間に介装
され、２連リンク２２は、家具本体側部材３における連
結枠材８ａの位置と据え付け用接地体４における連結枠
材１３ａの位置との間に介装されている。また、第二リ
ンク機構２０の２連リンク２３は、家具本体側部材３に
おける螺軸支持枠材１０の連結枠材８ｃ側に隣接する位
置と据え付け用接地体４における雌ねじ体支持枠材１４
の連結枠材１３ｃ側に隣接する位置との間に介装され、
２連リンク２４は、家具本体側部材３における連結枠材
８ｃの位置と据え付け用接地体４における連結枠材１３
ｃの位置との間に介装され、そして２連リンク２５は、
家具本体側部材３における連結枠材８ｂの位置と据え付
け用接地体４における連結枠材１３ｂの位置との間に介
装されている。As shown in FIG. 1A, the first link mechanism 19 comprises two sets of double links 21 and 22 and an interlocking means 26. The second link mechanism 20 comprises three sets of double links 23.
To 25 and the interlocking means 27. Then
The double link 21 of the first link mechanism 19 is connected to the position adjacent to the connection frame member 8a of the screw shaft support frame member 10 in the furniture body side member 3 and the connection frame of the female screw support frame member 14 in the grounding member 4 for installation. The double link 22 is interposed between the position adjacent to the member 13a and the link 22 between the position of the connection frame 8a on the furniture body side member 3 and the position of the connection frame 13a on the grounding member 4 for installation. It is interposed. The double link 23 of the second link mechanism 20 is connected to the position adjacent to the connection frame member 8c side of the screw shaft support frame member 10 in the furniture body side member 3 and the female screw member support frame member 14 in the installation grounding member 4.
Between the position adjacent to the connection frame 13c side of
The double link 24 is connected to the position of the connection frame member 8c in the furniture body side member 3 and the connection frame member 13 in the grounding member 4 for installation.
c, and the double link 25 is
It is interposed between the position of the connection frame member 8b on the furniture body side member 3 and the position of the connection frame member 13b on the installation grounding body 4.
【００１３】全ての２連リンク２１〜２５は、図６及び
図７に示すように、前記据え付け用接地体４の略全巾に
及ぶ横巾の２枚の板状リンク２８ａ，２８ｂを当該板状
リンクの長さ方向（据え付け用接地体４の巾方向）に貫
通する１本の支軸２８ｃで互いに枢着し、上側の各板状
リンク２８ａの遊端部を前記家具本体側部材３における
両側枠材７ａ，７ｂに前記リンク間支軸２８ｃと平行な
１本の支軸２８ｄで枢着し、下側の各板状リンク２８ｂ
の遊端部を前記据え付け用接地体４における両側枠材１
２ａ，１２ｂに前記リンク間支軸２８ｃと平行な１本の
支軸２８ｅで枢着したものであって、第一リンク機構１
９の２組の２連リンク２１，２２は、連結枠材８ａのあ
る側へ屈曲し、第二リンク機構２０の３組の２連リンク
２３〜２５は、反対側の連結枠材８ｂのある側へ屈曲し
ている。As shown in FIGS. 6 and 7, all the two links 21 to 25 are formed by connecting two plate-like links 28a and 28b each having a width substantially equal to the entire width of the grounding member 4 for installation. Are connected to each other by one support shaft 28c penetrating in the length direction of the link (the width direction of the grounding member 4 for installation), and the free ends of the upper plate-like links 28a are connected to the furniture body side member 3 by the free ends. Each of the lower plate-like links 28b is pivotally attached to both side frame members 7a and 7b with one support shaft 28d parallel to the link inter-support shaft 28c.
The free ends of the two side frame members 1 of the installation grounding body 4
2a and 12b, which are pivotally connected by one support shaft 28e parallel to the inter-link support shaft 28c.
The two sets of double links 21 and 22 are bent to the side where the connection frame member 8a is located, and the three sets of double links 23 to 25 of the second link mechanism 20 are provided with the opposite side connection frame member 8b. It is bent to the side.
【００１４】また、連動手段２６は、２連リンク２１の
リンク間支軸２８ｃの両端と２連リンク２２のリンク間
支軸２８ｃの両端の同一側どうしを連結する、ターンバ
ックル２９を介装した長さ調整自在なロッド３０から構
成され、連動手段２７は、図１Ａに示すように、２連リ
ンク２３のリンク間支軸２８ｃの両端と２連リンク２４
のリンク間支軸２８ｃの両端の同一側どうしを連結す
る、ターンバックル３１を介装した長さ調整自在なロッ
ド３２と、２連リンク２４のリンク間支軸２８ｃの両端
と２連リンク２５のリンク間支軸２８ｃの両端の同一側
どうしを連結する、ターンバックル３３を介装した長さ
調整自在なロッド３４とから構成されている。The interlocking means 26 is provided with a turnbuckle 29 for connecting both ends of the inter-link support shaft 28c of the double link 21 and the same side of both ends of the inter-link support shaft 28c of the double link 22. As shown in FIG. 1A, the interlocking means 27 is composed of a rod 30 having an adjustable length, and the interlocking means 27 is connected to both ends of the inter-link support shaft 28 c of the double link 23 and the double link 24.
The two ends of the inter-link support shaft 28c of the double link 24 and the two links 25 are connected to each other on the same side at both ends of the inter-link support shaft 28c, the length of the rod 32 being adjustable. It is composed of a rod 34 having a length adjustable and having a turnbuckle 33 interposed between the same side of both ends of the inter-link support shaft 28c.
【００１５】以上の構成によれば、家具本体側部材３と
据え付け用接地体４とを連結する第一リンク機構１９の
２組の２連リンク２１，２２と第二リンク機構２０の３
組の２連リンク２３〜２５とは、それぞれ連動手段２
６，２７により互いに平行運動のみ可能に連動連結され
ており、そして第一リンク機構１９の２組の２連リンク
２１，２２の屈曲方向と第二リンク機構２０の３組の２
連リンク２３〜２５の屈曲方向とは互いに異なっている
ので、家具本体側部材３と据え付け用接地体４とは、互
いに平行状態を保って相対的に昇降運動のみ可能な状態
である。According to the above configuration, two sets of two links 21 and 22 of the first link mechanism 19 and the third link of the second link mechanism 20 for connecting the furniture body side member 3 and the grounding member 4 for installation are connected.
The two links 23 to 25 of the set are respectively linked means 2
6 and 27 are connected to each other so as to allow only parallel movement, and the bending directions of the two sets of double links 21 and 22 of the first link mechanism 19 and the three sets of two links of the second link mechanism 20.
Since the bending directions of the connecting links 23 to 25 are different from each other, the furniture main body side member 3 and the installation grounding body 4 are in a state where only the vertical movement can be performed while keeping the parallel state with each other.
【００１６】係る状態で、回転操作ハンドルＨにより螺
軸１７を雌ねじ体１８に対して正方向（ねじ込み方向）
に回転させると、各２連リンク２１，２２及び２３〜２
５の屈曲角度が大きくなる方向への平行運動を伴って、
据え付け用接地体４が家具本体側部材３に対して垂直に
平行上昇移動し、回転操作ハンドルＨにより螺軸１７を
雌ねじ体１８に対して逆方向（ねじ戻し方向）に回転さ
せると、各２連リンク２１，２２及び２３〜２５の屈曲
角度が小さくなる方向への平行運動を伴って、据え付け
用接地体４が家具本体側部材３に対して垂直に平行下降
移動することになる。In this state, the screw 17 is rotated in the forward direction (screw-in direction) with respect to the female screw body 18 by the rotation operation handle H.
, The two links 21, 22, and 23-2
With the parallel movement in the direction in which the bending angle of 5 increases,
When the installation grounding member 4 moves vertically parallel to the furniture body side member 3 and rotates the screw shaft 17 in the opposite direction (screw-back direction) with respect to the female screw member 18 by the rotation operation handle H, each of the two members is moved. With the parallel movement in the direction in which the bending angles of the connecting links 21, 22, and 23 to 25 become smaller, the installation grounding body 4 moves vertically downward and parallel to the furniture body side member 3.
【００１７】従って、回転操作ハンドルＨにより螺軸１
７を正方向に回転させ、雌ねじ体１８を介して据え付け
用接地体４を、図１Ａ、図３及び図４に示すように、当
該据え付け用接地体４の下端接地面４ａが移動用車輪５
の接地レベルよりも上方になる上昇限位置まで家具本体
側部材３に対して垂直に平行上昇移動させることによ
り、家具本体側部材３に取り付けられている各移動用車
輪５が床面Ｆに当接し、家具本体２が各移動用車輪５を
介して床面Ｆ上に移動可能に支持されることになり、当
該移動用車輪５を利用して家具本体２の移動を容易に行
うことができる。この据え付け用接地体４の上昇過程に
おいて、据え付け用接地体４の下端接地面４ａが移動用
車輪５の接地レベルに到達するまでは、下端接地面４ａ
を介して床面Ｆ上に支持されている据え付け用接地体４
に対して家具本体側部材３（家具本体２）が下降するの
で、回転ハンドルＨ（螺軸１７）は家具本体側部材３
（家具本体２）と一体に床面Ｆ側に対して下降すること
になるが、それ以降は、床面Ｆ上に移動用車輪５を介し
て支持される家具本体側部材３に対して据え付け用接地
体３が上昇するので、回転ハンドルＨ（螺軸１７）の床
面Ｆ上のレベルは一定である。Therefore, the screw shaft 1 is rotated by the rotary operation handle H.
7 is rotated in the forward direction, and as shown in FIGS. 1A, 3, and 4, the lower grounding surface 4 a of the mounting grounding body 4 is moved to the moving wheel 5 through the female screw body 18.
Is moved vertically parallel to the furniture main body side member 3 to the ascending limit position above the ground level of the furniture, so that the moving wheels 5 attached to the furniture main body side member 3 hit the floor surface F. The furniture main body 2 is movably supported on the floor F via each of the moving wheels 5, and the furniture main body 2 can be easily moved using the moving wheels 5. . In the ascending process of the installation grounding body 4, the lower end grounding surface 4 a of the installation grounding body 4 reaches the grounding level of the moving wheel 5 until the lower end grounding surface 4 a reaches the grounding level of the moving wheel 5.
Installation grounding body 4 supported on floor F via
Since the furniture body side member 3 (furniture body 2) descends, the rotary handle H (screw shaft 17) is
(Furniture main body 2) will be lowered integrally with the floor F side, but after that, it is installed on the furniture main body side member 3 supported on the floor F via the moving wheels 5. Since the ground contact body 3 rises, the level of the rotary handle H (the screw shaft 17) on the floor surface F is constant.
【００１８】また、移動させた家具本体２を定位置に据
え付けるときは、回転操作ハンドルＨにより螺軸１７を
逆方向に回転させ、雌ねじ体１８を介して据え付け用接
地体４を、図１Ｂ及び図５に示すように、当該据え付け
用接地体４の下端接地面４ａが移動用車輪５の接地レベ
ルよりも下方になる下降限位置まで家具本体側部材３に
対して垂直に平行下降移動させることにより、家具本体
側部材３に取り付けられている各移動用車輪５が床面Ｆ
から浮上するとともに、据え付け用接地体４の下端接地
面４ａが床面Ｆ上に当接し、家具本体２が床面Ｆ上の定
位置に安定的に据え付けられる。この据え付け用接地体
４の下降過程において、据え付け用接地体４の下端接地
面４ａが移動用車輪５の接地レベルに到達するまでは、
移動用車輪５を介して床面Ｆ上に支持されている家具本
体側部材３に対して据え付け用接地体４が下降し、回転
ハンドルＨ（螺軸１７）の床面Ｆ上のレベルは一定であ
るが、それ以降は、床面Ｆ上に下端接地面４ａが当接し
た据え付け用接地体４に対して家具本体側部材３（家具
本体２）が上昇するので、回転ハンドルＨ（螺軸１７）
は家具本体側部材３（家具本体２）と一体に床面Ｆ側に
対して上昇することになる。When the moved furniture main body 2 is to be installed at a fixed position, the screw 17 is rotated in the reverse direction by the rotation operation handle H, and the installation grounding body 4 is connected via the female screw 18 to FIG. As shown in FIG. 5, the lower end ground surface 4 a of the installation grounding body 4 is vertically and vertically moved in parallel with the furniture body side member 3 to a lower limit position where the lower ground surface 4 a is lower than the ground level of the moving wheel 5. As a result, each moving wheel 5 attached to the furniture body side member 3 is
, And the lower end ground surface 4a of the installation grounding body 4 abuts on the floor F, so that the furniture body 2 is stably installed at a fixed position on the floor F. In the lowering process of the installation grounding body 4, until the lower end grounding surface 4 a of the installation grounding body 4 reaches the grounding level of the moving wheel 5,
The installation grounding body 4 is lowered with respect to the furniture body side member 3 supported on the floor F via the moving wheels 5, and the level of the rotary handle H (screw shaft 17) on the floor F is constant. After that, the furniture body side member 3 (furniture body 2) rises with respect to the installation grounding body 4 on which the lower end grounding surface 4a abuts on the floor surface F, so that the rotating handle H (screw shaft) 17)
Rises to the floor F side integrally with the furniture body side member 3 (furniture body 2).
【００１９】以上のように家具の支持装置に組み込んで
使用されるねじ式ジャッキ装置６の詳細を図８〜図１０
に基づいて説明すると、前記螺軸１７の下端には回り止
め用突部１７ｂが突設されており、この突部１７ｂの高
さより若干板厚が厚く且つ螺軸１７と略同一径の板材４
０が前記回り止め用突部１７ｂに外嵌され、ねじ４１に
より固定されている。前記板材４０の周縁一箇所から、
半径方向に突出する突起部４２が一体に連設されてい
る。The details of the screw type jack device 6 used by being incorporated in the furniture support device as described above are shown in FIGS.
The screw shaft 17 is provided with a rotation preventing protrusion 17b at the lower end thereof. The plate member 4 is slightly thicker than the height of the protrusion 17b and has substantially the same diameter as the screw shaft 17.
Numeral 0 is externally fitted to the rotation-preventing projection 17b and fixed by screws 41. From one peripheral edge of the plate member 40,
Protrusions 42 protruding in the radial direction are integrally connected.
【００２０】一方、前記雌ねじ体１８を固着している断
面門形の雌ねじ体支持枠材１４には、前記雌ねじ体１８
を螺合貫通して雌ねじ体支持枠材１４内に下向きに突出
している前記螺軸１７に隣接するように、当該螺軸１７
と平行に板材４３が取り付けられている。この板材４３
には、前記螺軸１７の回転により螺旋状に昇降移動する
前記突起部４２の移動経路と重なる部分に開口部４４が
形成され、当該開口部４４の前記螺軸軸心方向の両端辺
に互いに逆向きの段部４５ａ，４５ｂが形成され、この
段部４５ａ，４５ｂの内側の垂直辺が前記突起部４２に
対する制止部４６ａ，４６ｂとなっている。On the other hand, the female screw body support frame member 14 having a gate-shaped cross section to which the female screw body 18 is fixed is attached to the female screw body 18.
The screw shaft 17 is screwed through the screw shaft 17 so as to be adjacent to the screw shaft 17 protruding downward into the female screw support frame 14.
The plate member 43 is attached in parallel with. This plate 43
An opening 44 is formed in a portion overlapping with the movement path of the protrusion 42 that moves up and down in a spiral shape by the rotation of the screw shaft 17, and is formed at both ends of the opening 44 in the direction of the screw shaft axis. Inverted step portions 45a and 45b are formed, and vertical sides inside the step portions 45a and 45b serve as restraining portions 46a and 46b for the protrusion 42.
【００２１】下側の制止部４６ａは、前記螺軸１７を雌
ねじ体１８に対しねじ込み方向に回転操作して、図１Ａ
に示すように家具本体側部材３に対して据え付け用接地
体４を所定レベルまで上昇させて移動用車輪５で家具本
体２を移動可能に支持させたとき、即ち家具本体側部材
３に対する据え付け用接地体４の昇降行程の上昇端にお
いて、前記突起部４２の回転方向一側辺４２ａに当接し
て螺軸１７の回転を阻止するものであり、上側の制止部
４６ｂは、前記螺軸１７を雌ねじ体１８に対しねじ戻し
方向に回転操作して、図１Ｂに示すように家具本体側部
材３に対して据え付け用接地体４を所定レベルまで下降
させて移動用車輪５を床面Ｆから浮かし、据え付け用接
地体４で家具本体２を固定的に支持させたとき、即ち家
具本体側部材３に対する据え付け用接地体４の昇降行程
の下降端において、前記突起部４２の回転方向他側辺４
２ｂに当接して螺軸１７の回転を阻止するものである。The lower stopping portion 46a rotates the screw shaft 17 in the screwing direction with respect to the female screw member 18 to rotate the screw shaft 17 as shown in FIG.
As shown in FIG. 6, when the grounding member 4 for installation is raised to a predetermined level with respect to the member 3 on the furniture body side, and the furniture body 2 is movably supported by the moving wheels 5, that is, for mounting on the member 3 on the furniture body side. At the rising end of the up-and-down stroke of the grounding member 4, it contacts the one side 42 a in the rotation direction of the projection 42 to prevent the rotation of the screw shaft 17. By rotating the female screw body 18 in the unscrew direction, the installation grounding body 4 is lowered to a predetermined level with respect to the furniture body side member 3 as shown in FIG. When the furniture main body 2 is fixedly supported by the installation grounding body 4, that is, at the lower end of the ascent / descent stroke of the installation grounding body 4 with respect to the furniture body side member 3, the other side 4 in the rotation direction of the projection 42 is rotated.
2b to prevent rotation of the screw shaft 17.
【００２２】なお、図８〜図１０では、家具本体２を持
ち上げることになる螺軸１７のねじ戻し方向の回転操作
が、一般的にハンドルＨに対して回転操作力を入れ易い
時計方向回転（ハンドルＨを上から見て）となるよう
に、螺軸１７及び雌ねじ体１８を逆ねじとしている。In FIGS. 8 to 10, the turning operation of the screw shaft 17 for lifting the furniture main body 2 in the unscrewing direction is generally performed in a clockwise direction in which the turning operation force is easily applied to the handle H. The screw shaft 17 and the female screw body 18 are reverse-threaded so that the handle H is viewed from above.
【００２３】上記の構成によれば、ハンドルＨを介して
螺軸１７を雌ねじ体１８に対しねじ込み方向（ハンドル
Ｈを上から見て反時計方向）に回転操作したとき、螺軸
１７と一体に回転する突起部４２は、板材４３の開口部
４４内を経由しながら螺旋状に下降し、そして図１Ａに
示すように、家具本体側部材３に対して据え付け用接地
体４が所定レベルまで上昇して移動用車輪５が家具本体
２を移動可能に支持する上昇端に達したとき、前記突起
部４２の回転方向一側辺４２ａが板材４３の下側の制止
部４６ａに当接して螺軸１７の回転が阻止される。According to the above arrangement, when the screw shaft 17 is rotated through the handle H in the screwing direction (counterclockwise as viewed from above the handle H) with respect to the female screw body 18, the screw shaft 17 is integrated with the screw shaft 17. The rotating protrusion 42 spirally descends while passing through the opening 44 of the plate material 43, and as shown in FIG. 1A, the installation grounding body 4 rises to a predetermined level with respect to the furniture body side member 3. When the moving wheel 5 reaches the rising end for supporting the furniture body 2 movably, the one side 42a in the rotation direction of the projection 42 comes into contact with the lower stopping portion 46a on the lower side of the plate member 43 and the screw shaft. The rotation of 17 is prevented.
【００２４】また、ハンドルＨを介して螺軸１７を雌ね
じ体１８に対しねじ戻し方向（ハンドルＨを上から見て
時計方向）に回転操作したとき、螺軸１７と一体に回転
する突起部４２は、板材４３の開口部４４内を経由しな
がら螺旋状に上昇し、そして図１Ｂに示すように、家具
本体側部材３に対して据え付け用接地体４が所定レベル
まで下降して当該据え付け用接地体４が家具本体２を固
定的に支持する下降端に達したとき、前記突起部４２の
回転方向他側辺４２ｂが板材４３の上側の制止部４６ｂ
に当接して螺軸１７の回転が阻止される。When the screw shaft 17 is rotated through the handle H in the unscrew direction (clockwise as viewed from above the handle H) with respect to the female screw body 18, the protrusion 42 that rotates integrally with the screw shaft 17. As shown in FIG. 1B, the mounting ground 4 for the installation descends to a predetermined level with respect to the furniture body side member 3 while passing through the opening 44 of the plate material 43, and as shown in FIG. When the grounding body 4 reaches a lower end for fixedly supporting the furniture main body 2, the other side 42b in the rotation direction of the projection 42 is moved to the upper stopping portion 46b of the plate 43.
And the rotation of the screw shaft 17 is prevented.
【００２５】上記実施形態では、螺軸１７の端部に別の
板材４０を取り付け、この板材４０に突起部４２を突設
したが、螺軸１７の端部側面からピンを突設させるな
ど、他の方法により突起部４２を構成することもでき
る。また、雌ねじ体１８を備えた部材（雌ねじ体支持枠
材１４）側の制止部４６ａ，４６ｂも、各制止部４６
ａ，４６ｂを独立的に構成する２つの部材を各別に雌ね
じ体支持枠材１４に取り付けて構成することもできる。In the above-described embodiment, another plate member 40 is attached to the end of the screw shaft 17 and the projection 42 protrudes from the plate member 40. The projection 42 can be formed by another method. Also, the restraining portions 46a and 46b on the member (female screw supporting frame member 14) provided with the female screw body 18 are also provided with the respective restraining portions 46.
The two members a and 46b may be independently attached to the female screw support frame member 14, respectively.
【００２６】なお、本発明のねじ式ジャッキ装置は、２
部材を相対的に接近離間移動させるものであるから、そ
の利用分野は、上記実施形態に示す家具の支持装置の昇
降駆動手段としてだけでなく、２部材を相対的に接近離
間移動させるための駆動手段としてあらゆる分野に活用
できるものであり、特に、リミットスイッチなどのセン
サーを利用して行程限を検出して駆動を自動停止させる
ようなモーター駆動のねじ式ジャッキ装置ではなく、ハ
ンドルにより手動で螺軸を回転操作させるねじ式ジャッ
キ装置として効果的に活用できるものである。勿論、２
部材の相対的接近離間移動方向は、上下方向に限らず、
水平方向または斜め方向であっても良い。It should be noted that the screw type jack device of the present invention
Since the members are moved relatively close to and separated from each other, the field of application is not only as a lifting and lowering driving means of the furniture support device shown in the above embodiment, but also as a driving method for moving the two members relatively to and away from each other. It can be used in all fields as a means.In particular, it is not a motor driven screw type jack device that detects the stroke limit using a sensor such as a limit switch and stops the drive automatically, but it is manually screwed by a handle. The present invention can be effectively used as a screw jack device for rotating a shaft. Of course, 2
The relative approach / separation movement direction of the members is not limited to the vertical direction,
It may be horizontal or oblique.
【００２７】また、螺軸１７のピッチを一般的なものよ
りも大きくして、行程限での螺軸側の突起部と制止部と
の重なり代をできる限り大きくするのが望ましい。Further, it is desirable that the pitch of the screw shaft 17 is made larger than a general pitch so that the overlap between the protrusion on the screw shaft side and the stopping portion at the stroke limit is as large as possible.
【００２８】[0028]
【発明の効果】以上のように実施し且つ家具の支持装置
などに応用することのできる本発明のねじ式ジャッキ装
置によれば、２部材の相対的接近離間移動の少なくとも
一方の行程端において、螺軸側の突起部と雌ねじ体側の
制止部とを前記螺軸の回転方向で互いに当接させて前記
螺軸の回転を直接阻止させるものであるから、当該螺軸
を回転操作する操作者は、行程限に達した瞬間を感覚的
に容易且つ確実に知ることができ、従来のように螺軸と
雌ねじ体との噛み合い部を締め付けてしまう恐れが皆無
となる。According to the screw type jack device of the present invention which can be implemented as described above and can be applied to a furniture support device, etc., at least one stroke end of the relative approach / separation movement of the two members is as follows. Since the protrusion on the screw shaft side and the stopping portion on the female screw body side are brought into contact with each other in the rotation direction of the screw shaft to directly prevent the rotation of the screw shaft, the operator who operates the screw shaft to rotate is required. In addition, the moment when the stroke limit is reached can be easily and surely intuitively sensed, and there is no danger that the meshing portion between the screw shaft and the female screw body is tightened as in the related art.
【００２９】従って、従来のように螺軸と雌ねじ体との
噛み合い部を焼き付かせたり、次の逆回転操作が非常に
困難になるようなことがなくなり、操作が楽になるとと
もに、装置各部の破損を防止し、装置の耐用寿命を長く
することができるのである。Therefore, the meshing portion between the screw shaft and the female screw body is not seized as in the prior art, and the next reverse rotation operation is not made extremely difficult. Damage can be prevented and the useful life of the device can be extended.
【００３０】なお、請求項２に記載の構成によれば、螺
軸側の突起部を簡単に構成することができ、また、請求
項３に記載の構成によれば、制止部を簡単に構成するこ
とができる。According to the second aspect of the present invention, the projection on the screw shaft side can be easily formed, and according to the third aspect of the present invention, the stopping section can be easily formed. can do.
【図１】 Ａ図は本発明のねじ式ジャッキ装置を組み込
んだ家具の支持装置を移動可能にした状態で示す縦断正
面図であり、Ｂ図は当該支持装置を床面上に接地させて
据え付けた状態を示す縦断正面図である。FIG. 1A is a longitudinal sectional front view showing a state in which a furniture supporting device incorporating a screw-type jack device of the present invention is movable, and FIG. B is an installation in which the supporting device is grounded on a floor surface. It is a vertical front view which shows the state which was set.
【図２】 上記支持装置の平面図である。FIG. 2 is a plan view of the support device.
【図３】 図１Ａのねじ式ジャッキ装置を示す位置での
縦断側面図である。FIG. 3 is a vertical sectional side view at a position showing the screw jack device of FIG. 1A.
【図４】 図１Ａの２連リンクを示す位置での縦断側面
図である。FIG. 4 is a vertical sectional side view at a position showing the double link of FIG. 1A.
【図５】 図１Ｂのねじ式ジャッキ装置を示す位置での
縦断側面図である。FIG. 5 is a longitudinal sectional side view at a position showing the screw jack device of FIG. 1B.
【図６】 図１Ａの要部の拡大図である。FIG. 6 is an enlarged view of a main part of FIG. 1A.
【図７】 図１Ａの要部の一部切り欠き横断平面図であ
る。FIG. 7 is a partially cutaway cross-sectional plan view of a main part of FIG. 1A.
【図８】 ねじ式ジャッキ装置の分解斜視図である。FIG. 8 is an exploded perspective view of the screw jack device.
【図９】 ねじ式ジャッキ装置を示す縦断側面図であ
る。FIG. 9 is a longitudinal sectional side view showing the screw type jack device.
【図１０】 ねじ式ジャッキ装置の横断平面図である。FIG. 10 is a cross-sectional plan view of the screw jack device.
１ 支持装置 ２ 家具本体 ３ 家具本体側部材（２部材の一方） ４ 据え付け用接地体（２部材の他方） ５ 移動用車輪 ６ ねじ式ジャッキ装置 １０ 螺軸支持枠材 １４ 雌ねじ体支持枠材 １７ 螺軸 １８ 雌ねじ体 １９ 第一リンク機構 ２０ 第二リンク機構 ２１〜２５ ２連リンク ２６，２７ 連動手段 ２８ａ〜２８ｂ 板状リンク ２８ｃ リンク間支軸 ２９，３１，３３ ターンバックル ３０，３２，３４ ロッド ４０ 突起部構成用板材 ４１ 板材取り付け用ねじ ４２ 突起部 ４３ 制止部構成用板材 ４４ 開口部 ４５ａ，４５ｂ 段部 ４６ａ，４６ｂ 制止部 Ｆ 床面 Ｈ 回転操作ハンドル DESCRIPTION OF SYMBOLS 1 Support apparatus 2 Furniture main body 3 Furniture main body side member (one of two members) 4 Grounding body for installation (the other of two members) 5 Wheel for movement 6 Screw type jack device 10 Screw shaft support frame member 14 Female screw member support frame member 17 Screw shaft 18 Female screw body 19 First link mechanism 20 Second link mechanism 21-25 Double link 26,27 Interlocking means 28a-28b Plate link 28c Link support shaft 29,31,33 Turnbuckle 30,32,34 Rod Reference Signs List 40 Projection-forming plate material 41 Plate-mounting screw 42 Projection 43 Suppression-section-forming plate material 44 Opening 45a, 45b Step 46a, 46b Suppression F Floor H Rotation operation handle
Claims (3)
に自転のみ可能に一端部が支承された螺軸と、当該螺軸
に螺嵌するように他方の部材に設けられた雌ねじ体とか
ら成り、前記螺軸の正逆回転操作により前記２部材を相
対的に接近離間移動させるようにしたねじ式ジャッキ装
置であって、前記螺軸の遊端には半径方向に突出する突
起部が設けられ、前記雌ねじ体が設けられた部材には、
前記２部材の相対的接近離間移動の少なくとも一方の行
程端において、前記突起部の回転方向側辺に当接して螺
軸の回転を阻止する制止部が設けられている、ねじ式ジ
ャッキ装置。1. A screw shaft having one end supported on one of two members relatively movable toward and away from each other so as to be rotatable only, and a female screw member provided on the other member so as to screw into the screw shaft. A screw-type jack device for moving the two members relatively close to and away from each other by a forward / reverse rotation operation of the screw shaft, wherein a free end of the screw shaft has a protrusion projecting in a radial direction. Provided, the member provided with the female screw body,
At least one stroke end of the relative approach / separation movement of the two members, a screw-type jack device provided with a stopping portion which abuts on the rotation-direction side of the projection to prevent rotation of the screw shaft.
た回り止め用突部に外嵌し且つねじにより当該螺軸に固
定された板材から突設されている、請求項１に記載のね
じ式ジャッキ装置。2. The projection part is externally fitted to a rotation-preventing projection projecting from the free end of the screw shaft, and is projected from a plate material fixed to the screw shaft by a screw. 2. The screw jack device according to 1.
に隣接して当該螺軸と平行に板材が取り付けられ、この
板材には、前記螺軸の回転により螺旋状に移動する前記
突起部の移動経路と重なる部分に開口部が形成され、当
該開口部の前記螺軸軸心方向の端辺に、前記制止部とな
る段部が形成されている、請求項１または２に記載のね
じ式ジャッキ装置。3. A member provided with the female screw body is provided with a plate adjacent to the screw shaft and parallel to the screw shaft, and the plate member is provided with the protrusion which moves helically by rotation of the screw shaft. 3. The opening according to claim 1, wherein an opening is formed in a portion overlapping with a movement path of the portion, and a step portion serving as the stopping portion is formed on an end of the opening in the axis direction of the screw shaft. 4. Screw jack device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28790497A JP2889894B2 (en) | 1997-10-03 | 1997-10-03 | Screw type jack device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28790497A JP2889894B2 (en) | 1997-10-03 | 1997-10-03 | Screw type jack device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11106192A JPH11106192A (en) | 1999-04-20 |
| JP2889894B2 true JP2889894B2 (en) | 1999-05-10 |
Family
ID=17723237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28790497A Expired - Lifetime JP2889894B2 (en) | 1997-10-03 | 1997-10-03 | Screw type jack device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2889894B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104876149A (en) * | 2015-05-04 | 2015-09-02 | 陈功 | Transverse-stress-induction jack |
| CN105946120B (en) * | 2016-05-10 | 2019-08-02 | 广西金航通混凝土有限公司 | A kind of concrete mixer amount of agitation control switch |
-
1997
- 1997-10-03 JP JP28790497A patent/JP2889894B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11106192A (en) | 1999-04-20 |
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