JPS6326635Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tripod used to support photographic equipment such as cameras, telescopes, and other equipment.

[Conventional technology]

Generally, a tripod has upper ends of the legs pivoted to a base body on which a camera head is mounted so that the upper ends of the legs can rotate radially relative to each other. In a typical tripod, the opening angle of the legs can be regulated by having the upper ends of the legs come into contact with a stopper protrusion on the base side, or by providing a separate mechanism for preventing the legs from opening.

In addition, there are, for example, Japanese Utility Model Publication No. 49-42737 and Japanese Unexamined Patent Publication No. 55-57794, which allow the opening angle of the legs to be adjusted.

[The problem that the idea attempts to solve]

However, in all of the above known examples, each leg is linked to each other and set to the same opening angle, which is rather inconvenient when you want to adjust the angle of each leg individually for various uses. .

It has also been considered to be able to adjust the angle of each leg individually, but conventional adjustment mechanisms have drawbacks such as cumbersome operation and complicated structure.

Therefore, an object of the present invention is to provide a tripod that allows the opening angle of each leg to be adjusted individually with a simple operation and that has a relatively simple structure.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a plurality of stopper walls at the leg attachment portion of the base, and a slide member at the upper end of each leg.

The above-mentioned stopper walls protrude in the radial direction of the pivot of the leg attachment part, and are arranged around the axis of the above-mentioned pivot in plural numbers with different heights in stages such that the height of the stopper wall protruding from the pivot becomes larger on the upper side. It is set in place. Further, each of the slide members is movable in the radial direction of the pivot shaft, and has a plurality of positions corresponding to the height of each stopper wall so that it can selectively engage with any one of the plurality of stopper walls. It can be stopped.

In the present invention having the above structure, when the number of stopper walls is set to three, for example, the slide member can also be stopped at three positions depending on the height of the stopper walls.

[Effect]

After moving the slide member and stopping it at a desired position among the multiple stages, when the legs are expanded,
Since the slide member abuts against the stopper wall whose height corresponds to the position of the slide member, further opening of the legs is restricted, and a desired opening angle can be set depending on the position of the step. Further, when folding the legs, the legs can be folded in the same way as a normal tripod by simply rotating the legs inward without operating the slide members.

According to the present invention having the above structure, the opening angle of each leg can be adjusted independently, and the desired angle can be adjusted by simply selecting the slide member to the desired position and then opening the legs. It can be stopped at any time and is extremely easy to operate. Moreover, since the adjustment mechanism of the present invention can be implemented on a conventional tripod by simply adding a stopper wall and a slide member, the structure is relatively simple without requiring any major design changes.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. The tripod 1 shown in FIG. 1 includes a base body 3 to which a pan head 2 is attached, and legs 4 pivoted to the base body 3 so as to be rotatable radially. Reference numeral 5 denotes a handle of an elevator mechanism for raising and lowering the pan head 2. Since all of the legs 4 have a common structure, one will be explained below as a representative.

The leg 4 uses a telescopic tube 8 in which a plurality of pipes of different diameters are sequentially connected via clamps 6 and 7, similar to a general tripod, and each pipe can be adjusted to any length by the clamps 6 and 7. It can be fixed in the horizontal position.

The upper end portion of the leg 4 is rotatably attached to a leg attachment portion 11 of the base body 3 by a pivot shaft 10. Note that in FIGS. 2 and 3, the pan head 2 is omitted.

Further, a hole 12 is formed in the leg attachment portion 11 to allow the pivot shaft 10 to pass therethrough.

An engaging means 13 is provided on the leg attachment portion 11. This engaging means 13 is formed by forming a plurality of stopper walls 14, 15, 16 around the axis of the pivot 10, the heights of which are sequentially changed from the bottom. That is, each stopper wall 14, 15, 16 protrudes in the radial direction of the pivot 10, and has a height h ₁ , h ₂ , h such that the height of the stopper wall protruding from the pivot 10 increases as the upper stage side increases. ₃ (see Figure 4) is set.

On the other hand, the upper end of the leg 4 is constituted by an end member 18 formed separately from the telescopic tube 8. This end member 18 has a hole 19 through which the pivot shaft 10 is inserted, a click mechanism housing hole 20, and a pinching portion 2 that pinches the part 11a of the leg attachment portion from both sides.
1, and a guide groove 2 for slidably guiding a slide member 30, which will be described later, in the radial direction of the pivot shaft 10.
2. Then, the clip portion 21 is fitted into a portion 11a of the leg attachment portion 11, the pivot 10 is inserted therethrough, and the nut 23 is tightened. Further, the click mechanism housing hole 20 includes a click ball 25 that can engage with a recess 24, which will be described later.
A compression spring 26 for biasing this is housed, and constitutes a click mechanism 27.

Further, a slide member 30 is attached to the guide groove 22 so as to be movable in the radial direction of the pivot shaft 10.
This slide member 30 includes a slide member main body 32 made by bending a thick metal plate into a substantially U-shape and having a locking portion 31 in the middle thereof, and an operating portion 33 attached to the outside thereof. The screws 34, 35, 36
They are connected to each other by.

The slide member 30 is configured so as to be able to stop at a plurality of positions according to the heights of the stopper walls 14, 15, and 16. That is,
When the slide member 30 is pushed in to the maximum,
As shown in Fig. 4, the locking portion 31 is located closer to the pivot 10 than the height _h1 of the first stopper wall 14. When the slide member 30 is pulled in the direction of the arrow _F1 and reaches an intermediate position where the locking portion 31 can engage with the second stopper wall 15 as shown in Fig. 5, the click ball 25 resiliently engages with the recess 24 (see Fig. 2) formed on the inner surface of the slide member main body 32, thereby stopping the slide member 30 and providing a feeling of clicking motion.

When the slide member 30 is further pulled to the state shown in FIG. 6, the retaining portion 32a formed on the slide member main body 32 engages with the nut 23 to prevent further movement. As shown in FIG. 6, the dimensional relationships are set so that the locking portion 31 is located at the height of the third stopper wall 16.

As can be seen from the above description, in this embodiment with the above configuration, when the position of the slide member 30 is selected from one of the three positions and then the legs 4 are rotated in the direction of spreading the slide member 30, the slide member 30 The locking portion 31 hits one of the stopper walls 14, 15, and 16 depending on the position of the stopper wall, and the opening angle of the leg 4 is regulated. In other words, by selecting the slide member 30 at a position corresponding to the opening angle, each leg 4
This means that the opening angles of each can be adjusted independently.

For example, if all the legs 4 are spread out at the same angle, it can be used in the manner shown in FIGS. 7A to C. Further, by making the angles of the legs 4 different from each other and spreading them out, it can be used in various ways depending on the situation of the installation location, as illustrated in FIGS. 8A and 8B. In this case, each leg 4...
The length may be adjusted as appropriate.

As described above, according to this embodiment, various uses are possible by independently adjusting the angles, lengths, etc. of the legs 4. Moreover, the opening angle can be easily adjusted by simply adjusting the position of the slide member 30. Furthermore, since the slide member 30 can be stopped at its intermediate stop position with a sense of movement by the click mechanism 27, the position of the slide member 30 can be easily selected and easily set to any of three positions. be able to.

Also, when folding each leg 4..., there is no need to operate each slide member 30..., and each leg 4... can be simply rotated inward and folded just like a normal tripod. Bye. Therefore, no complicated operations are necessary.

In the above embodiment, the opening angle can be adjusted in three steps, but in implementing the present invention, the number of stopper walls and the stop position of the slide member should be changed so that the opening angle can be adjusted in two or four or more steps. may be set.

[Effect of idea]

As described above, according to the present invention, it is possible to provide a tripod that allows the opening angle of each leg to be adjusted individually through simple operations and that has a relatively simple structure.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view of the tripod, Fig. 2 is an exploded perspective view showing the leg attachment part, and Fig. 3 is a front view of the base part with the pan head removed. , FIGS. 4 to 6 are cross-sectional views taken along line A-A in FIG. 3 showing different operating states, and FIG.
Figures A, B, and C and Figures 8A and 8B are schematic diagrams showing the use of the tripod, respectively. 1... Tripod, 2... Pan head, 3... Base, 4...
Leg, 10... Pivot, 11... Leg attachment part, 13...
Engagement means, 14, 15, 16... stopper wall, 1
8... End member (upper end of leg), 27... Click mechanism, 30... Slide member.

Claims (1)

[Scope of utility model registration request] In a tripod in which the upper ends of the legs are pivoted to a base body on which a pan head is mounted so as to be mutually rotatable radially by means of a pivot shaft, the leg attachment portions of the base body each have a base body that protrudes in the radial direction of the pivot shaft. In addition, a plurality of stopper walls are provided at multiple locations around the axis of the pivot at different heights in stages so that the height of the protrusion from the pivot increases as the height of the upper end increases, and the upper end of each leg Each part is movable in the radial direction of the pivot shaft and has one of the plurality of stopper walls.
A tripod characterized by being provided with a slide member that can be stopped at a plurality of positions depending on the height of each stopper wall so that it can be engaged with the stopper wall.