JP2508229Y2 - Survey tripod - Google Patents

Description

【考案の詳細な説明】 ［産業上の利用分野］ 本考案は測量用三脚に係り、特に測角測距に用いる測
量用三脚の改良に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a surveying tripod, and more particularly to improvement of a surveying tripod used for angle-measuring and ranging.

［従来の技術］ 一般に光波測角測距儀による距離測定は、被測点上に
設置されたプリズムに向けて、例えばトータルステーシ
ョンから変調光波を発光し、上記プリズムで反射された
変調光波と、基準変調光波との位相差を利用して測定す
る方法であり、また角度測定においては、光学式エンコ
ーダによりプリズム中心又はターゲット付のプリズム装
置のターゲット中心或はピンポールの中心を視準し角度
を計るものである。[Prior Art] In general, distance measurement by an optical wave distance measuring device emits a modulated light wave from, for example, a total station toward a prism installed on a measured point, and a modulated light wave reflected by the prism and a reference It is a method to measure by using the phase difference with the modulated light wave, and in angle measurement, the angle is aimed by collimating the prism center or the target center of the prism device with the target or the center of the pin pole with an optical encoder. Is.

上記プリズム又はピンポールの設置は、従来、第７図
及び第８図で示されるような三脚を用いて、被測点上に
設定していた。即ち、第７図にあるように、プリズム
（図示せず）を取付けたピンポール71をグリップ部材72
で挾持し、該グリップ部材72を三脚75の脚頭73に固定す
るもので、その脚頭73の部分は、第８図に示すように、
枠体81の内部にボール部材82が配設されており、該ボー
ル部材82の回動により、グリップ部材72も回動し得るよ
うになっている。Conventionally, the prism or the pin pole has been set on the measured point by using a tripod as shown in FIGS. 7 and 8. That is, as shown in FIG. 7, the pin pole 71 having a prism (not shown) attached thereto is attached to the grip member 72.
The grip member 72 is fixed to the leg head 73 of the tripod 75, and the portion of the leg head 73 is, as shown in FIG.
A ball member 82 is arranged inside the frame 81, and the grip member 72 can be rotated by the rotation of the ball member 82.

［考案が解決しようとする課題］ しかし、近時、光波測角測距儀による計測の精度が高
いこと、更に光波測角測儀の小型・軽量化に伴い光波測
角測距儀により測角測距等される範囲が拡大され、現在
では300m以下の短距離にも利用されるようになり、これ
に伴い、測角測距等を行なう環境も山野等だけでなく、
被測角測距点が市街地などの障害物の多い場所も含まれ
るようになりつつある。[Problems to be solved by the invention] However, recently, with the high accuracy of measurement by the light wave angle measuring rangefinder, and the size and weight reduction of the light wave angle measuring rangefinder, the angle measurement by the light wave angle measuring rangefinder is recently performed. The range of distance measurement etc. has been expanded, and now it is also used for short distances of 300 m or less, and along with this, not only Yamano etc.
The angle-measuring points are being included in places with many obstacles such as urban areas.

ところで、従来の測量用三脚では、プリズム設置位置
又はピンポールを微かに移動させようとする場合でも、
三脚そのものを移動させねばならず、上記のような市街
地等の障害物の多い環境では特に不便であった。By the way, with the conventional survey tripod, even when trying to slightly move the prism installation position or the pin pole,
The tripod itself had to be moved, which was particularly inconvenient in an environment with many obstacles such as the above-mentioned urban areas.

また、従来の測量用三脚では、持ち運びの際、グリッ
プ部材を三脚の頭部から取はずして別個に収納した状態
で行なうようになっており、このため、移動の毎に、グ
リップ部材の着脱操作を要するとともにグリップ部材用
の収納ケース等が別途必要であった。In addition, the conventional surveying tripod is designed so that the grip member is detached from the head of the tripod and stored separately when carrying it. In addition to the above, a storage case for the grip member and the like are required separately.

本考案は、上記問題点に鑑みなされたもので三脚を移
動せずともプリズム設置位置の微小移動が可能であり、
且つ、グリップ部材の固定操作が極めて容易で、しかも
グリップ部材を取りつけたまま収納することのできる測
量用三脚を提供することを目的とする。The present invention has been made in view of the above problems, and the prism installation position can be finely moved without moving the tripod.
Further, it is an object of the present invention to provide a surveying tripod in which the fixing operation of the grip member is extremely easy, and further, the tripod can be stored while the grip member is attached.

［課題を解決するための手段］ 上記目的を達成するため、本考案に係る測量用三脚は
以下のような構成とする。[Means for Solving the Problems] In order to achieve the above object, the surveying tripod according to the present invention has the following configuration.

即ち、ピンホールを挾持する挟み部材が一端部側に形
成された支持部材と、該支持部材を固定する固定手段を
頭部位置に配設した測量用三脚であって、前記固定手段
は、枠体と、該枠体内に回動自在に保持されると共に中
央に設けられた貫通孔とボール表面からボール中心に向
かって開設され押圧装置によって潰れる切欠き溝を備え
たボール部材と、該ボール部材を押圧するための押圧装
置とからなり、前記支持部材の他端側をボール部材の貫
通孔内に装着して前記切欠き溝を潰して前記支持部材を
固定してなることを特徴とする。That is, a surveying tripod in which a pinching member for holding a pinhole is formed at one end side and a fixing means for fixing the supporting member is provided at a head position, and the fixing means is a frame. A body, a ball member rotatably held in the frame, a through hole provided in the center, a notch groove opened from the ball surface toward the center of the ball and crushed by a pressing device, and the ball member A pressing device for pressing the support member, and the other end of the support member is mounted in the through hole of the ball member to crush the cutout groove to fix the support member.

また押圧装置としては、押え板と、平座金と、該平座
金と押え板との間に介装された弾性材と、平座金を押圧
する操作部材とから成り、該操作部材は前記枠体に軸支
され、該操作部材の回動により、前記ボール部材に対す
る押圧力を調整可能とすると好適である。The pressing device includes a pressing plate, a plain washer, an elastic material interposed between the plain washer and the pressing plate, and an operating member for pressing the plain washer, the operating member being the frame body. It is preferable that the pressing force on the ball member can be adjusted by pivotally supporting the operation member by rotating the operation member.

また上記枠体の底部には支持部材を枠体と同軸に位置
させる切欠きが形成されている構成とする。Further, a notch is formed at the bottom of the frame body so as to position the support member coaxially with the frame body.

［作用］ 本考案に係る測量用三脚は上記のような構成を有し、
押圧装置によりボール部材を押圧しない状態では、ボー
ル部材が枠体内で自由に回動でき、ボール部材の貫通孔
も弛んだ状態となり、支持部材は前後に摺動することが
できる。このため、支持部材は、開口に規制される範囲
内で、上下左右及び前後方向に自由に位置させることが
できる。このように支持部材がボール部材の貫通孔内に
装着されているので、ボール部材を回動することによ
り、支持部材の方向を所望の向きに調整することができ
るのと同時に、支持部材をボール部材の貫通孔内で前後
方向に摺動させ、平行移動させることもできる。このた
め、支持部材の端部に位置する挟み部材は、前後及び上
下左右に位置させることができ、三脚位置を調整するこ
となく、支持部材を調整して、プリズムを取着したポー
ルの位置調整が可能となる。そして、操作部材を回動さ
せれば、切欠き溝が潰れて、ボール部材の貫通孔が、支
持部材を挾圧（押圧）し、瞬時に支持部材は固定され
る。また、不使用時には前記支持部材を頭部の真下位置
に垂直に懸吊させて収納することができる。[Operation] The survey tripod according to the present invention has the above-mentioned configuration,
When the ball member is not pressed by the pressing device, the ball member can freely rotate in the frame body, the through hole of the ball member is also loosened, and the support member can slide back and forth. Therefore, the support member can be freely positioned in the up / down, left / right, and front / rear directions within the range restricted by the opening. Since the support member is mounted in the through hole of the ball member in this way, the direction of the support member can be adjusted to a desired direction by rotating the ball member, and at the same time, the support member can be attached to the ball. It is also possible to slide the member in the through hole of the member in the front-rear direction for parallel movement. Therefore, the sandwiching member located at the end of the support member can be positioned in the front-rear direction and the vertical and horizontal directions, and the support member is adjusted without adjusting the tripod position to adjust the position of the pole to which the prism is attached. Is possible. Then, when the operating member is rotated, the notch groove is crushed, and the through hole of the ball member presses (presses) the support member, so that the support member is instantly fixed. Further, when not in use, the support member can be vertically suspended and stored directly below the head.

［実施例］ 以下、本考案の一実施例を図面に基づいて説明する。
なお、以下に説明する部材，配置等は本考案を限定する
ものでなく、本考案の趣旨の範囲内で種々改変すること
ができるものである。[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.
It should be noted that the members, arrangements, and the like described below do not limit the present invention and can be variously modified within the scope of the gist of the present invention.

第１図は本考案に係る実施例の一部断面図であり、第
２図は第１図を上方より見た平面図である。図中、符号
１は脚頭、符号２は支持部材、符号３は三脚取付部材、
符号４は脚部を示し、脚頭１には、上記支持部材２の固
定手段として、略円筒形状をした枠体５の内部にボール
部材６及び押圧装置７を内蔵する。1 is a partial sectional view of an embodiment according to the present invention, and FIG. 2 is a plan view of FIG. 1 seen from above. In the figure, reference numeral 1 is a leg head, reference numeral 2 is a supporting member, reference numeral 3 is a tripod mounting member,
Reference numeral 4 indicates a leg portion, and the leg head 1 has a ball member 6 and a pressing device 7 built in a substantially cylindrical frame body 5 as a fixing means of the support member 2.

本例のボール部材６は、ポリアセタール樹脂からな
り、第5A図及び第5B図に示されるように、中央に貫通孔
6aが穿設されるとともに、ボール表面からボール中心に
向かって開設された切欠き溝（すり割）6bが十字に形成
され、貫通孔6aの一端側の外周には平溝6cが形成されて
いる。従って、ボール部材６は次述する押圧装置７によ
って押圧されると、上記切欠き溝6bの部分が潰れるよう
に構成されることとなる。The ball member 6 of this example is made of polyacetal resin and has a through hole in the center as shown in FIGS. 5A and 5B.
6a is formed, a notch groove (slit) 6b opened from the ball surface toward the center of the ball is formed in a cross shape, and a flat groove 6c is formed on the outer periphery on one end side of the through hole 6a. There is. Therefore, when the ball member 6 is pressed by the pressing device 7 to be described below, the cutout groove 6b is crushed.

押圧装置７は、ボール部材６の上方（第１図、以下、
上下の位置は特に定める場合を除いては第１図を基準と
する）に配設された押え板８と、更に該押え板８の上方
に配設された平座金９と、平座金９と押え板８との間に
介装されたサラバネ10と、前記平座金９を上方より押圧
する操作部材11とからなる。The pressing device 7 is located above the ball member 6 (see FIG. 1, hereinafter,
The upper and lower positions are provided with reference to FIG. 1 unless otherwise specified), and a flat washer 9 and a flat washer 9 are provided above the holding plate 8. It is composed of a flat spring 10 interposed between the holding plate 8 and an operating member 11 for pressing the flat washer 9 from above.

ボール部材６の上方に当接する押え板８は、その底面
8aが該ボール部材６に的確に当接するように中央部分が
球面に形成され、且つ、枠体５内を上下に摺動できるよ
うになっている。The pressing plate 8 that abuts above the ball member 6 has a bottom surface.
The central portion is formed into a spherical surface so that the ball member 8a comes into proper contact with the ball member 6 and can slide up and down in the frame body 5.

操作部材11は、断面コ字形の棒状11bを側面視Ｌ字状
に形成しており、Ｌ字状の短い辺側（即ち平座金９側）
の先端は、テコ部としてカム状に構成された爪11aが形
成されて、他端側は把持部11cとなっている。爪11aは、
中央からやや偏心した位置で、前記水平ピン12によっ
て、回動自在に支承されており、把持部11cを押し下げ
ると押え板８は押し下げられる。なお把持部11cにはゴ
ム等が取着されており、操作部材11の操作を容易にして
いる。The operation member 11 has a rod-shaped 11b having a U-shaped cross section formed in an L-shape in a side view, and has a short side of the L-shape (that is, the flat washer 9 side).
A cam-shaped pawl 11a is formed as a lever portion at the tip of the, and a grip portion 11c is provided at the other end. The nail 11a is
It is rotatably supported by the horizontal pin 12 at a position slightly eccentric from the center, and when the grip 11c is pushed down, the holding plate 8 is pushed down. Note that rubber or the like is attached to the grip portion 11c to facilitate the operation of the operation member 11.

枠体５は鉄，アルミニウム等からなり、第３図で示す
ように、上方が開放された略円筒形状をなすもので、そ
の本体5aの内壁側面13は、前記ボール部材６の前後左右
（第３図）の移動を制限するとともに該ボール部材６が
自由に回動できるように、なめらかな円筒形に形成さ
れ、その前面及び後面（第１図において左右）には開口
14a,14bが形成されている。本例の開口14a,14bは同一形
状となっている。また枠体５の底部5bには、下方に三脚
取付部材３を取着させるための一対のボルト穴16が３か
所に設けられている。そして本例では、支持部材２が、
第３図で示すように枠体５と同軸（垂直）に収納できる
ように、開口14a方向側へ水平な切欠き15が設けられて
いる。そして、枠体５の内壁底面の中央部分は、前記ボ
ール部材６を載置するための球面17（第３図）が形成さ
れている。The frame body 5 is made of iron, aluminum or the like and has a substantially cylindrical shape with an open upper portion as shown in FIG. 3), the ball member 6 is formed into a smooth cylindrical shape so that the ball member 6 can freely rotate, and the front and rear surfaces (left and right in FIG. 1) have openings.
14a and 14b are formed. The openings 14a and 14b in this example have the same shape. Further, the bottom portion 5b of the frame body 5 is provided with a pair of bolt holes 16 for attaching the tripod attachment member 3 downward at three locations. And in this example, the support member 2 is
As shown in FIG. 3, a horizontal notch 15 is provided in the direction of the opening 14a so that the frame 5 can be housed coaxially (vertically). A spherical surface 17 (FIG. 3) for mounting the ball member 6 is formed at the central portion of the bottom surface of the inner wall of the frame body 5.

支持部材２の端部にはグリップ部材Ｇが配設されてい
る。このグリップ部材Ｇは、プリズム（図示せず）を取
付けたピンポール18または伸縮自在のプリズムポール
（図示せず）を挾持するため、２本の挾み部材21,22
と、弾撥バネ23と被覆部材25とからなる。上記挾み部材
21,22の先端（第１図及び第２図において左側）には、
上記ピンポール18等を挾持するための凹部19が被覆部材
25によって、形成され、グリップ部材Ｇの他端側には、
凹部19にピンポール18等を挾持させるための押圧力を発
生させる弾撥バネ23が被覆部材と一体に形成され、被覆
部材25と一体となった弾撥バネ23によって、挾み部材21
と挟み部材22は連結されている。本例では上記挾み部材
21,22のうち、一方の挾み部材21は支持部材２と一体と
なっており、挾み部材22は把持部となっている。A grip member G is arranged at the end of the support member 2. The grip member G holds a pin pole 18 to which a prism (not shown) is attached or an extendable prism pole (not shown), so that two gripping members 21 and 22 are provided.
And an elastic spring 23 and a covering member 25. The sandwiched member
At the tip of 21,22 (on the left side in FIGS. 1 and 2),
The recess 19 for holding the pin pole 18 or the like is a covering member.
25, and on the other end side of the grip member G,
An elastic-repellent spring 23 that generates a pressing force for holding the pin pole 18 or the like in the recess 19 is formed integrally with the covering member, and the elastic member 23 integrated with the covering member 25 causes the gripping member 21.
And the sandwiching member 22 are connected. In this example, the sandwiched member
One of the picking members 21 and 22 is integrated with the support member 2, and the picking member 22 is a grip portion.

上記支持部材２の端部は、前記枠体５の本体5aに開設
された開口14aから前記ボール部材６の貫通孔6aを貫通
して装着されている。この挾み部材21の端部には、支持
部材２が前記ボール部材６から離脱しないように、Ｅリ
ング（またはＣリング）24が取着されている。なお、ボ
ール部材６に形成されている平溝6c内に前記Ｅリング
（またはＣリング）24が収まるようになっている。The end portion of the support member 2 is mounted by penetrating the through hole 6a of the ball member 6 from the opening 14a formed in the main body 5a of the frame body 5. An E-ring (or C-ring) 24 is attached to the end of the picking member 21 so that the support member 2 does not separate from the ball member 6. The E-ring (or C-ring) 24 is fitted in the flat groove 6c formed in the ball member 6.

次に、上記構成から実施例の操作方法を説明する。 Next, the operation method of the embodiment will be described from the above configuration.

操作部材11を上方に立てた状態（第１図中のＡ位置）
では、操作部材11から平座金９に対して加えられる押圧
力は弛められ、従って、ボール部材６が枠体５内で自由
に回動できるとともに、該ボール部材６の貫通孔6aも弛
んだ状態となり、支持部材２は前後に摺動することがで
きる。このため、支持部材２は、第１図及び第２図の矢
印で示すように、開口14a,14bに規制される範囲内で、
上下左右及び前後方向に自由に位置させることができ
る。Operation member 11 standing up (position A in Fig. 1)
Then, the pressing force applied from the operating member 11 to the plain washer 9 is relaxed, so that the ball member 6 can freely rotate in the frame body 5, and the through hole 6a of the ball member 6 is also loosened. The support member 2 can slide back and forth. Therefore, as shown by the arrows in FIGS. 1 and 2, the support member 2 is within the range restricted by the openings 14a and 14b,
It can be positioned freely in the up / down / left / right and front / rear directions.

これに対し、操作部材11を略水平に寝かせた状態（第
１図中のＢ位置）では、操作部材11のテコ部としての爪
11aが平座金９を強く押圧することになり、従って、ボ
ール部材６は押え板８と枠体５の内側上面17との間で締
め付けられ、動きが規制されると共に、切欠き溝6bが潰
れて、ボール部材６の貫通孔6aが、前記支持部材２を挾
圧（押圧）し固定させることになる。なお、押え板８に
は第３図で示すように、上方に凸部が形成され、爪11a
は、この凸部を両側から挟む構成となっているので、爪
部11aが水平ピン12の軸方向（第３図左右方向）に移動
するのを防止している。On the other hand, when the operating member 11 is laid down substantially horizontally (position B in FIG. 1), the claw serving as the lever portion of the operating member 11
11a strongly presses the flat washer 9, so that the ball member 6 is clamped between the pressing plate 8 and the inner upper surface 17 of the frame body 5, the movement is restricted, and the notch groove 6b is crushed. Thus, the through hole 6a of the ball member 6 presses (presses) the support member 2 to fix it. As shown in FIG. 3, the pressing plate 8 has a convex portion formed on the upper side, and the claw 11a
Has a structure in which the convex portion is sandwiched from both sides, so that the claw portion 11a is prevented from moving in the axial direction of the horizontal pin 12 (horizontal direction in FIG. 3).

なお上記実施例では、ボール部材６に形成した切欠き
溝6bが、第5A図で示すように、十字方向に形成されて、
ボール部材６のばね作用を弱くして、支持部材２の締付
けを容易にしているが、切欠き溝を一方向だけに形成し
ても、支持部材２の締付け作用を持たせることができる
ものである。In the above embodiment, the notch groove 6b formed in the ball member 6 is formed in the cross direction as shown in FIG. 5A,
Although the spring effect of the ball member 6 is weakened to facilitate the tightening of the support member 2, the support member 2 can be tightened even if the notch groove is formed in only one direction. is there.

更に、操作部材11に、テコ部としてカム状に構成され
た爪11aの形状を、第６図の矢印の示すように、回動中
心（水平ピン12）からの離脱が微かづつ時計回りに増加
して行くような多角形状にすることにより、前記押圧力
を段階的に調整することも可能である。このようにする
と、支持部材２の可動を規制しながら位置調整をするこ
とができる。Further, the operating member 11 is provided with a cam-shaped pawl 11a as a lever portion, and the detachment from the rotation center (horizontal pin 12) is slightly increased clockwise as shown by the arrow in FIG. It is also possible to adjust the pressing force stepwise by making it a polygonal shape. By doing so, the position can be adjusted while restricting the movement of the support member 2.

そして、不使用時においては、第３図で示すように、
支持部材２は脚頭１に取着したまま収納されるようにな
っている。即ち、支持部材２の端部に装着されているＥ
リング24を前記ボール部材６の平溝6c内に収めた状態に
し、次に、支持部材２が枠体５の底部5bに形成されてい
る切欠き15を通って鉛直下向きに懸吊されるようにす
る。この位置に支持部材２を固定して収納すれば、脚部
の着脱作業の支障になるおそれがなく、また、測量の毎
に、グリップ部材を取り付け・取り外しする手間も省け
る。When not in use, as shown in FIG.
The support member 2 is adapted to be stored while being attached to the leg head 1. That is, the E mounted on the end of the support member 2
The ring 24 is housed in the flat groove 6c of the ball member 6, and then the support member 2 is suspended vertically downward through the notch 15 formed in the bottom portion 5b of the frame body 5. To If the support member 2 is fixedly stored at this position, there is no risk of hindrance to the leg attachment / detachment work, and the labor of attaching / detaching the grip member at each survey is saved.

［考案の効果］ 以上のように、本考案は、押圧装置によりボール部材
を押圧しない状態では、ボール部材が枠体内で自由に回
動でき、ボール部材の貫通孔も弛んだ状態となり、支持
部材は前後に摺動することができる。このため、支持部
材は、開口に規制される範囲内で、上下左右及び前後方
向に自由に位置させることができる。そして、支持部材
がボール部材の貫通孔内に装着されているので、ボール
部材を回動することにより、支持部材の方向を所望の向
きに調整することができるのと同時に、支持部材をボー
ル部材の貫通孔内で前後方向に摺動させ、平行移動させ
ることもできる。このように、支持部材の端部に位置す
る挟み部材は、前後及び上下左右に位置させることがで
き、三脚位置を調整することなく、支持部材を調整し
て、プリズムを取着したポールの位置調整が可能とな
る。そして、操作部材を回動させれば、切欠き溝が潰れ
て、ボール部材の貫通孔が、支持部材を挾圧（押圧）
し、瞬時に支持部材は固定される。したがって、被測点
の近傍に障害物があっても、三脚の設置が可能となる。
またプリズム位置の微調整も三脚自体の移動をしないで
行なうことができる。しかも、支持部材（グリップ部
材）の固定・遊離の操作は押圧装置の操作部材を回動す
るだけで、即ち、ワンタッチで行なうことができるた
め、位置調整を容易、且つ精度良く行なうことが可能で
ある。[Advantages of the Invention] As described above, according to the present invention, when the ball member is not pressed by the pressing device, the ball member can freely rotate in the frame body, and the through hole of the ball member also becomes loose. Can slide back and forth. Therefore, the support member can be freely positioned in the up / down, left / right, and front / rear directions within the range restricted by the opening. Since the support member is mounted in the through hole of the ball member, the direction of the support member can be adjusted to a desired direction by rotating the ball member, and at the same time, the support member is attached to the ball member. It is also possible to slide in the through-hole in the front-back direction for parallel movement. In this way, the sandwiching member located at the end of the supporting member can be positioned in the front and rear and in the vertical and horizontal directions, and the position of the pole to which the prism is attached can be adjusted by adjusting the supporting member without adjusting the tripod position. Adjustment is possible. Then, when the operation member is rotated, the notch groove is crushed, and the through hole of the ball member presses (presses) the support member.
Then, the support member is instantly fixed. Therefore, even if there is an obstacle near the measured point, the tripod can be installed.
Further, fine adjustment of the prism position can be performed without moving the tripod itself. Moreover, since the operation of fixing / releasing the support member (grip member) can be performed only by rotating the operation member of the pressing device, that is, with one touch, position adjustment can be performed easily and accurately. is there.

また、不使用時には前記支持部材を頭部の真下位置に
垂直に懸吊させて収納することができるので、支持部材
を枠体に取着したまま収納することができ、支持部材及
びグリップ部材の取り付け・取りはずし作業が省略され
るばかりでなく、支持部材及びグリップ部材用の収納ケ
ースを、個別に用意する必要がないという利点を有す
る。Further, when not in use, the support member can be vertically suspended and stored directly below the head, so that the support member can be stored while being attached to the frame body. Not only is the installation / removal work omitted, there is the advantage that it is not necessary to separately prepare the storage case for the support member and the grip member.

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

第１図乃至第６図は本考案の実施例を示し、第１図は三
脚の脚頭部分の一部断面図、第２図は平面図、第３図は
三脚収納時の脚頭断面図、第4A図は脚頭の枠体内の側面
図、第4B図は底面図、第5A図はボール部材の第5B図のＹ
−Ｙ線による断面図、第5B図は第5A図のＸ−Ｘ線方向か
ら見た外観図、第６図は押圧装置の操作部材の概略を示
す側面図、第７図及び第８図は従来例を示し、第７図は
三脚外観図、第８図は該三脚の脚頭部分の一部断面図で
ある。 １……脚頭、２……支持部材、３……三脚取付部材、４
……脚部、５……枠体、5a……枠体本体、６……ボール
部材、6a……貫通孔、6b……切欠き溝、７……押圧装
置、８……押え板、９……平座金、10……弾性材（サラ
バネ）、11……操作部材、15……切欠き、18……ピンポ
ール、21,22……挾み部材、24……Ｅリング、Ｇ……グ
リップ部材。1 to 6 show an embodiment of the present invention, FIG. 1 is a partial sectional view of a leg part of a tripod, FIG. 2 is a plan view, and FIG. 3 is a sectional view of a leg part when the tripod is stored. , Fig. 4A is a side view of the inside of the frame of the leg head, Fig. 4B is a bottom view, and Fig. 5A is a ball member Y in Fig. 5B.
Fig. 5B is a cross-sectional view taken along line -Y, Fig. 5B is an external view as seen from the direction of line XX in Fig. 5A, Fig. 6 is a side view schematically showing the operating member of the pressing device, and Figs. 7 and 8 are A conventional example is shown, FIG. 7 is an external view of a tripod, and FIG. 8 is a partial sectional view of a leg head portion of the tripod. 1 ... leg head, 2 ... support member, 3 ... tripod mounting member, 4
...... Legs, 5 ... Frame, 5a ... Frame body, 6 ... Ball member, 6a ... Through hole, 6b ... Notch groove, 7 ... Pressing device, 8 ... Presser plate, 9 …… Flat washer, 10 …… Elastic material (sarabane), 11 …… Operating member, 15 …… Notch, 18 …… Pin pole, 21,22 …… Clamping member, 24 …… E ring, G …… Grip Element.

Claims (3)

(57)【実用新案登録請求の範囲】(57) [Scope of utility model registration request] 【請求項１】ピンホールを挾持する挟み部材が一端部側
に形成された支持部材と、該支持部材を固定する固定手
段を頭部位置に配設した測量用三脚であって、前記固定
手段は、枠体と、該枠体内に回動自在に保持されると共
に中央に設けられた貫通孔とボール表面からボール中心
に向かって開設され押圧装置によって潰れる切欠き溝を
備えたボール部材と、該ボール部材を押圧するための押
圧装置とからなり、前記支持部材の他端側を前記ボール
部材の貫通孔内に装着して前記切欠き溝を潰して前記支
持部材を固定してなることを特徴とする測量用三脚。1. A surveying tripod comprising a support member having a pinching member for holding a pinhole formed on one end side thereof, and a fixing means for fixing the supporting member at a head position, the fixing means. And a ball member having a frame body, a through hole that is rotatably held in the frame body, and a through hole provided in the center, and a notch groove that is opened from the ball surface toward the ball center and is crushed by a pressing device, A pressing device for pressing the ball member, wherein the other end of the supporting member is mounted in the through hole of the ball member to crush the notch groove to fix the supporting member. A characteristic tripod for surveying. 【請求項２】前記押圧装置は、押え板と、平座金と、該
平座金と押え板との間に介装された弾性材と、平座金を
押圧する操作部材とから成り、該操作部材は前記枠体に
軸支され、該操作部材の回動により、前記ボール部材に
対する押圧力を調整可能としたことを特徴とする請求項
１記載の測量用三脚。2. The pressing device comprises a pressing plate, a plain washer, an elastic material interposed between the plain washer and the pressing plate, and an operating member for pressing the plain washer. The tripod for surveying according to claim 1, wherein is rotatably supported by the frame, and the pressing force on the ball member can be adjusted by rotating the operating member. 【請求項３】前記枠体の底部には支持部材を枠体と同軸
に位置させる切欠きが形成されていることを特徴とする
請求項1,2いずれか記載の測量用三脚。3. The tripod for surveying according to claim 1, wherein a notch for locating the support member coaxially with the frame is formed in a bottom portion of the frame.