JP3581884B2 - Multi-leg support - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a multi-leg support such as a tripod used for supporting equipment such as an astronomical telescope and a camera.
[0002]
[Prior art]
Generally, as shown in FIG. 6, a multi-leg support 1 of this type represented by a tripod has a cylindrical main shaft 2, a mount 3 for supporting the main shaft 2, and a cross-section integrated with the mount. ., And legs 5, 5,... Pivotally supported by the leg support portion 4. The mounting member 6 is fixed to an upper portion of the main shaft member 2, and The mounting member 6 supports the astronomical telescope 8 supported by the camera platform 7 and other supported objects. Further, the leg 5 can be folded with respect to the gantry 3 via the leg support portion 4, which is convenient when the multi-leg support base 1 is moved or stored.
[0003]
Conventionally, the gantry 3 is integrally formed by resin molding or die casting into a shape in which the leg support portions 4, 4,...
[0004]
[Problems to be solved by the invention]
In recent years, equipment such as cameras and astronomical telescopes, which are supported objects, have been developed and manufactured in a wide variety of forms, and other types of tripods such as tripods manufactured in accordance with the various kinds of equipment are required. Certain products, such as those dedicated to specialized equipment, may be limited to very small production per type. In some cases, a small number of different shapes are required for the trial operation. However, in the above-described conventional techniques, there is a problem that a molding die is required to perform resin molding or die-casting of the gantry, which is expensive.
[0005]
The present invention has been made in view of such a situation of the related art, and has as its object to provide a multi-leg support base that can be manufactured inexpensively even in a small number and has sufficient strength.
[0006]
[Means for Solving the Problems]
The features of the present invention for solving the conventional problems as described above and achieving the intended purpose include a cylindrical main shaft, a gantry supporting the main shaft, and a cross section integrated with the gantry. In a multi-leg support base including a plurality of downward U-shaped leg support portions and a plurality of legs pivotally supported by the leg support portions,
The gantry has a flat plate-shaped substrate having an insertion hole through which the main shaft member is inserted, a plurality of connection support plates radially integrated with the outer peripheral edge of the substrate through a fold, and the connection support plate. section by the when integrated via a fold on both side edges and a side support plate separated from the substrate by the switching Re eyes together and bent downwardly along the side surface support plate to said fold line Forming a downward U-shaped leg support portion, projecting a board-side tip of the side support plate below the insertion hole, and inserting the board-side tip into the lower end surface of the main shaft member, and inserting the board through hole. An edge portion is fixed to the outer periphery of the main shaft member .
[0007]
Incidentally, it is preferable that the locking opening of the legs by abutting the joining end face of the leg on the outer end face of the consolidated support plate.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of a multi-leg support according to the present invention will be described with reference to FIGS.
[0009]
FIG. 1 shows an embodiment of a multi-leg support according to the present invention, and reference numeral 10 denotes a tripod.
[0010]
The tripod 10 includes a cylindrical main shaft 11, a gantry 12 for supporting the main shaft 11, and legs 13, 13.
[0011]
The main shaft member 11 is formed in a cylindrical shape from an aluminum steel material or the like. A mounting member 14 is fixed to an upper end portion of the main shaft member 11, and a screw 15 projects from a central portion of the mounting member 14. A mounting adapter and a camera platform can be fixed to the tripod 10.
[0012]
The gantry 12, as shown in FIG. 2, has a disc-shaped substrate 17 having an insertion hole 16 in the center of which the main shaft member 11 is inserted, and radially arranged on the outer peripheral edge of the substrate 17, and has folds 18, 18,. Are formed by pressing a plate-shaped material such as an aluminum steel material.
[0013]
As shown in FIG. 3, the leg support portions 19 are radially arranged on the outer peripheral edge of the substrate 17, and are connected to the connecting support plates 20, 20. It is formed integrally with the folds 21, 21 and has side support plates 23, 23 separated from the substrate 17 by the cuts 22, 22. The side support plate 23 is formed along the folds 21, 21. By bending downward, the cross section is formed in a downward U-shape.
[0014]
At this time, the cut 22 is formed in an arc shape along the outer shape of the substrate 17, and when the connecting support plate 20 and the side support plate 23 are bent along the folds 18 and 21 and 21, respectively, the side support plate The board-side tip portions 23 a of the 23 23 project below the insertion hole 16.
[0015]
A pivot hole 24 for pivotally supporting the leg 13 is formed in the center of the side support plate 23.
[0016]
As shown in FIG. 4, the leg 13 is formed into a rod shape having a downward U-shaped cross section by press working, and has a pedestal-side end at its pedestal-side end. As shown in FIG. The leg support 19 is sandwiched between the side plates 25a, 25a, and a pivot 26 such as a bolt is passed therethrough so as to be pivotally supported by the leg support 19. With this configuration, the joint end surface 13a of the leg 13 abuts on the outer end surface 20a of the connection support plate 20, and the leg 13 is prevented from opening.
[0017]
With this configuration, when the lower end portion of the main shaft 11 is inserted into the insertion hole 16, the side support plate in which the lower end of the main shaft 11 protrudes below the insertion hole 16 as shown in FIG. 23, 23 are supported by the substrate-side tip portions 23a, 23a. Here, the substrate-side tip portions 23a, 23a of the side support plate are fixed to the lower edge of the main shaft member 11, and the edge portion of the insertion hole 16 is fixed to the outer peripheral surface of the main shaft member by welding or the like. The position for fixing (welding) is fixed so that the shape connecting the two points on the side of the side surface support plate on the substrate side and one point on the edge of the insertion hole is substantially triangular. By fixing in this manner, the main shaft member 11 and the gantry 12 are firmly fixed, and sufficient reinforcement is provided against a bending load acting upward on the leg support portion 19 via the fold line 18.
[0018]
In the above-described embodiment, the example in which the substrate 17 is formed in a disk shape is described. However, the substrate shape is not limited to the disk shape, and may be, for example, a flat polygon. Further, in the above-described embodiment, an example has been described in which the cuts 22, 22 are formed in an arc shape along the outer shape of the board 17, but the board-side tip portions 23 a, 23 a of the side support plate 23 are located below the insertion holes 16. The cut 22 may be formed in a shape that makes it easy to protrude.
[0019]
In the above embodiment, a tripod has been described, but a multi-leg support having three or more legs may be used.
[0020]
Further, in the above-described embodiment, the example in which the astronomical telescope is supported has been described. However, the supported object is not limited to the equipment such as the telescope and the camera, and may be applied as a support base such as a showcase or a music stand. be able to.
[0021]
【The invention's effect】
As described above, the multi-leg support according to the present invention includes a cylindrical main shaft, a gantry supporting the main shaft, and a plurality of leg support portions having a U-shaped cross section integrated with the gantry. And a plurality of legs pivotally supported by the leg support portion, wherein the gantry has a flat plate-shaped substrate having an insertion hole through which the main shaft member is inserted, and the substrate A plurality of connecting support plates radially integrated on the outer peripheral edge of the connecting support plate via folds, and side support plates integrated on both side edges of the connecting support plate via folds and separated from the substrate by cuts The side support plate is bent downward along the fold to form a leg support portion having a downward U-shaped cross section, and the substrate-side tip of the side support plate is positioned below the insertion hole. To support the main shaft, so that a small number of products can be produced. Can also be manufactured at low cost by press working, also, it is possible to easily cope with a wide variety of shapes.
[0022]
In addition, the base end of the side support plate on the substrate side is fixed to the lower end surface of the main member, and the edge of the insertion hole of the substrate is fixed to the outer periphery of the main shaft member, so that the gantry and the main shaft member are suitably fixed, and Sufficient reinforcement is provided against bending loads acting upward through the folds.
[0023]
By preventing the legs from opening by bringing the joint end surfaces of the legs into contact with the outer end surfaces of the connecting support plate, the structure is simplified and the cost is reduced.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a multi-leg support according to the present invention.
2 (A) is a plan view showing a gantry in FIG. 1, and FIG. 2 (B) is a side view thereof.
FIG. 3 is a plan view showing a state where the gantry is expanded.
FIG. 4 is a perspective view showing a leg in FIG. 1;
FIG. 5 is a bottom view showing a support state of the main shaft member in FIG. 1;
FIG. 6 is a side view showing an example of a conventional multi-leg support base.
[Explanation of symbols]
10 tripods (multi-leg support)
DESCRIPTION OF SYMBOLS 11 Main shaft member 12 Stand 13 Leg 14 Mounting member 15 Screw 16 Insertion hole 17 Substrate 18 Fold 19 Leg support 20 Connection support plate 21 Fold 22 Cut 23 Side support plate 23a Substrate side tip 24 Axis hole 25 Axis support 26 Axis ( bolt)

Claims (2)

A cylindrical main shaft member, a gantry supporting the main shaft member, a plurality of leg support portions having a downward U-shaped cross section integrated with the gantry, and a plurality of legs pivotally supported by the leg support portions; In a multi-leg support base comprising
The gantry has a flat plate-shaped substrate having an insertion hole through which the main shaft member is inserted, a plurality of connection support plates radially integrated with the outer peripheral edge of the substrate through a fold, and the connection support plate. section by the when integrated via a fold on both side edges and a side support plate separated from the substrate by the switching Re eyes together and bent downwardly along the side surface support plate to said fold line Forming a downward U-shaped leg support portion, projecting a board-side tip of the side support plate below the insertion hole, and inserting the board-side tip into the lower end surface of the main shaft member, and inserting the board through hole. A multi-leg support having an edge fixed to the outer periphery of the main shaft . 2. The multi-leg support according to claim 1, wherein the legs are prevented from opening by bringing the joint end surfaces of the legs into contact with the outer end surfaces of the connection support plate .

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