JP4466614B2 - A one-touch open / close leg type tripod that uses the same method to open the tripod. - Google Patents

Description

  The present invention provides a tripod stand for use in photography, various surveys, etc., a tripod easel used for sketching a painting, or a stand used for displaying various guides and menus in office presentations, stores, etc. The present invention relates to a tripod stand opening method adapted to a tripod such as a one-touch opening and closing leg tripod using the same method.

  For work such as photography and terrain surveying, a tripod stand that is portable and movable is used. In general, it is necessary to repeatedly move and re-install each work while repeating the movement and re-installation. It is normal. In addition, the easel for painting sketches, information boards and menus for shops, etc. are often installed at the beginning of work or at the time of opening, but they are often left for a certain period of time. There has been a demand for a storage device that can be easily stored and is compact and easy to carry without being bulky.

  Many of the traditional tripods used as photographic equipment have light metal legs such as aluminum, and the easel for painting also has legs made of natural materials such as wood. Each time, it relies on manual work for each leg, which is inconvenient for work with a lot of movement. In particular, when there is a lot of movement in photography, surveying, etc., it may be forced to move by opening the legs with a camera or measuring instrument. In such a case, if the tripod can be opened and closed easily and quickly, it is extremely advantageous without impairing the work efficiency.

  For example, Patent Document 1 proposes a conventional tripod opening / closing mechanism that can open and close a tripod leg by a one-touch operation and dramatically improve operability. However, in this method, the three legs constituting the tripod are operated separately without cooperation. Therefore, although the operability is improved as the leg opening operation, the three legs cannot be opened and closed at the same time.

JP-A-8-121687

  In this application, without tripping, you can open the tripod tripod at any opening with a single touch, and just lift the tripod body. To provide a tripod that can be operated easily by anyone, even when moving with the legs closed and frequently changing the installation location.

In order to achieve the above object, each of the tripods is connected to each of the sub-legs via the sliding part provided on the main leg of the tripod and each of the sliding parts sliding along the sliding part. It consists of two open leg bars. Then, by simply sliding the connecting pin or the sliding ring as the sliding body, the two leg bars spread each leg, and between the main leg and the secondary leg. A tripod characterized by being opened at an arbitrary angle and opened.

The requirement for this kind of one-touch tripod opening method is to design it so that anyone can easily operate it with a simple mechanism. That is, as shown in Patent Document 1, each leg is individually operated to install each operation in a stacked manner, and is configured to be completed by one operation. Further, here, the open / close leg mechanism is attached in the vicinity of the base, which is the attachment part of each leg of the tripod, so that it can be applied to a conventional general tripod stand.

  Each leg linked to the base is freely opened and closed, and when the grounding part of the leg is separated from the ground, each leg is in a vertical posture with its tip part directly below due to the gravitational force and its own weight. For this reason, the three legs are automatically closed and gathered in the center, and are easily bundled and stored and moved very easily. In addition, since the operation unit has a simple structure, it can be reduced in size and weight, and is suitable for application to an easel for painting that is easy to carry.

Furthermore, the form and structure of each sliding portion may be considered in accordance with the shape of the column of each leg. That is, it may be determined in consideration of whether each column as a leg is cylindrical or prismatic, or the smoothness of the surface of the column and the uniformity of the thickness as a column. The sliding ring method is suitable for a general photographic tripod in which each column is smooth and thin and constant, and in the case of a wooden or thick column, the connecting pin of the stay body method is used. I can do things. When the stay body is used as the sliding portion, the angle of the connecting pin that fits and slides into the slit of the stay body is parallel to the mounting angle of the leg bar without any trouble. You can do it.

    In the present invention, it is configured so that both the opening leg and the closing leg can be completed with the minimum necessary operation as described above. Therefore, anyone can easily and quickly perform one-touch operation regardless of time and place. It is assumed that the tripod can be installed and stored reliably by the operation of.

  If you use the tripod opening method of the present invention or a tripod using the same method, you can easily and flexibly install a tripod stand with one-touch operation. Extremely high work efficiency can be obtained even when moving and re-installing frequently.

  In addition, the present invention can reduce the size of the tripod stand and reduce the number of leg attachment parts and angle adjustment parts. Therefore, the present invention is extremely effective for moving to remote places where portability is important. In addition, the utility of miniaturization is useful for making effective use of storage space, etc., by creating extra space for movement and storage space in stores and offices.

When practicing the present invention, the sliding portion, which is generally a tripod opening / closing leg mechanism, can be provided in the vicinity of the base. It can be applied to any of them regardless of the presence or absence of elasticity.

Further, the one-touch type open / close leg type tripod of the present invention slides the two leg bars just by operating each sliding knob, and opens the tripod to an arbitrary opening degree by one-touch operation. What you can do. Also, the installation position on the main leg side supporting the open leg bar is set slightly lower, so that the leg is closed at the moment when the tip of each leg is separated from the grounding surface, Be easy to carry and use.

EXAMPLES Hereinafter, although this invention is demonstrated with reference to drawings based on an Example, unless it deviates from the summary of invention, it is not limited to these examples.
FIG. 1 is a perspective view of this embodiment. FIG. 2 is a front plan view of FIG. FIG. 3 is a front plan view showing FIG. 2 in a closed leg state. FIG. 4 is a plan view showing the linkage between the stay body as the sliding portion and the open leg bar. FIG. 5 is an enlarged cross-sectional view of the cut surface taken along the chain line AA in FIG. 4 as viewed from the direction of the arrow. FIG. 6 is a partial perspective view showing the linkage between the sliding portion of another form corresponding to FIG. 1 and the open leg bar of the sliding ring.

1 and 2, the sliding knob A13 is positioned on the upper portion of the stay body 7 provided on the main leg 1, and the connecting pin 15 provided with the sliding knob A13 is used to open the leg. Bars 9 extend substantially horizontally to the left and right, and their tips are pivotally supported on the side surfaces of the sub-legs 3 by a support shaft B21, and each of the sub-legs 3 has its open leg bar. It can be seen that it is pushed by 9 and retracts, and the space between the legs of the main leg 1 and each of the sub-legs 3 is expanded.

That is, in the main leg 1, when the sliding knob A13 fitted in the slit 11 of the stay body 7 slides along the slit 11 and is moved to the upper part of the stay body 7, Each open leg bar 9 connected to the connecting pin 15 provided with the sliding knob A13 is a piston that pushes each auxiliary leg 3 to open.

FIG. 3 shows a state after the legs are closed in FIG. 2. The sliding knob A13 is lowered at the lower part of the stay body 7 provided on the main leg 1, and the left and right leg bars 9 are respectively It shows that the sub-legs 3 are gathered at the center by changing the posture to a substantially vertical posture, closing the space between the legs.

FIG. 4 shows the stay body 7 as a main mechanism part of the present invention, and FIG. 5 shows the function and role of the stay body 7. In FIG. 4, a plurality of notches are provided in the slit 11 of the stay body 7 to form the locking portion 17. This is effective in changing the opening degree of the tripod, and is provided so that the sliding knob A13 can be locked at an appropriate position. The shape and the position thereof can be determined as appropriate.

Here, the upper end portion of each open leg bar 9 is pivotally supported on the side surface of each sub-leg 3 by the support shaft B21. When the sliding knob A13 is slid upward, each of the open leg bars 9 corresponds to any angle, so that the tripod having the leg body adapts to the shape of the grounding surface, It can be installed at the opening.

As described above, the tripod opening method using the stay body 7 of the present invention is that the sliding knob A13 shown in FIG. 4 is (1), the upper part of the slit 11 is (2), and the opening bar 9 is When the part pivotally supported on the sub-leg 3 is represented by (3), it can be described by a triangle having (1), (2), and (3) as vertices. That is, when the leg is closed, the side (1)-(2) and the side (1)-(3) are substantially equal, and the side (2)-(3) becomes small. Further, when (1) is slid and moved to the upper part of the slit 11, the side (1)-(2) becomes smaller and the side (2)-(3) becomes larger, that is, an open leg state is shown. It will be a thing.

FIG. 5 is an enlarged cross-sectional view when viewed from the direction of the arrow with the chain line AA in FIG. 4 as a cut surface. Here, the sliding knob A13 provided with the connecting pin 15 is fitted into the slit 11 of the stay body 7, and the open leg bar 9 is freely rotated by the support shaft A19. It is pivotally supported. Here, the attachment angle of the open leg bar 9 on the connection pin 15 may be adjusted so as to match the connection angle with respect to each of the auxiliary legs 3 so that the open leg bar 9 can be moved in parallel.

FIG. 6 is a partial perspective view showing an embodiment in which the sliding ring 16 is used. This shows the case of a tripod as a general photographic equipment, and it can be seen that the sliding ring 16 is suitably used as the sliding body for the cylindrical leg. That is, in this case, since the main leg 1 itself becomes the sliding portion, the sliding ring 16 is fitted to the main leg 1 and slid to open. The sliding ring 16 is provided with the sliding knob B14 to facilitate a sliding operation with fingers. Then, it can be seen that the open leg bar 9 supported by the support shaft A19 is connected to the sub-legs 3 via the support shaft B21.

A condition for automatically closing the tripod according to the present invention is that the position of the support shaft A19 at the time of the maximum opening of the tripod is slightly lower than the position of the support shaft B21. It is. That is, the posture of the leg bar 9 at the time of the maximum leg opening is not in a horizontal state and needs to be inclined slightly lower toward the support shaft A19. In other words, the support shaft B21 is set to stop at a slightly high position. For this purpose, the mounting position of the stay body 7 to the main leg 1 and the position of the sliding knob A13 are taken into consideration, and when the sliding ring 16 is used, the main leg 1 is appropriately set. For example, a stopper for fixing the upper limit position of the sliding ring 16 may be provided at a position so that the support shaft A19 does not become a high position.

  In the one-touch opening / closing leg type tripod of the present invention, it is necessary to be able to open and close when the main leg 1 and the auxiliary leg 3 are attached to the base 5, but they are connected by a support shaft made of a general material. If it is a thing, it will not inhibit the characteristics of the present invention. In addition, when the grounded portions of the main leg 1 and the sub-leg 3 that are open are in contact with the floor or the ground, contact friction due to the total weight of the tripod is generated, so that the tripod wobbles or tilts when fixed to its installation position No need to worry.

As described above, according to the tripod opening method of the present invention shown in FIG. 1 or FIG. 2 and FIG. 6, the sliding knob A13 provided on the connecting pin 15 as the sliding body, or the By attaching the hand to the slide knob B14 provided on the slide ring 16 and sliding the stay body 7 or the main leg 1 along the support column, the slide knob A14 is attached to the slide knob A13. Each of the open leg bars 9 attached to the connecting pin 15 or the sliding ring 16 is opened with a single touch in order to spread the auxiliary legs 3.

Further, when the legs are closed, the connecting pins 15 fitted to the stay body 7 are simply raised by lifting the vicinity of the base 5 of the tripod and pulling the grounding portion of each leg of the tripod away from the ground or floor surface. Alternatively, the sliding ring 16 descends along the main leg 1 and moves below the main leg 1, so that the legs 1 and 3 of the tripod are respectively shown in FIG. Due to its own weight, it gathers vertically below the base 5 and becomes a shape that can be easily stored. Thus, with the tripod of the present invention, installation and storage can be performed by one-touch operation.

  The tripod of the present invention can be quickly opened and closed with one-touch operation, so anyone can respond to any occasion at any time, increasing the chance of leaving valuable scenes instantly. There is no difference. The easel for painting is a tool that is indispensable for sketching and sketching outdoors. A really suitable easel can be made. Furthermore, since it can be applied to a guide board used in an office or a store, or a display stand, it can be a suitable tool for applications such as presentations and briefings.

1 is an overall perspective view of a one-touch open leg tripod showing an embodiment of the present invention. Front plan view of FIG. Front plan view showing the closed leg state of FIG. Top view showing stay and open leg bar The expanded sectional view which shows the part cut | disconnected by the dashed line in FIG. Partial perspective view showing the function of sliding ring and leg bar

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main leg body 3 Secondary leg body 5 Base 7 Stay body 9 Opening leg bar 11 Slit 13 Sliding knob A
14 Sliding knob B
15 Connecting Pin 16 Sliding Ring 17 Locking Part 19 Support A
21 Spindle B

Claims (3)

In a tripod consisting of three struts that are openably and closably connected, one strut in the tripod is a main leg having a sliding portion, the other two struts are sub-legs, and two more legs are opened. The leg bar is configured such that one end is connected to a connecting pin or a sliding ring as a sliding body, and the other end is pivotally supported on the side surface of each auxiliary leg. Then, when each of the sliding bodies that move the sliding portion is used to slide and spread the two auxiliary leg bodies by sliding the two open leg bars connected to the auxiliary leg bodies, one main leg body And the two legs are attached so that the legs are opened in three directions, and the tripod is opened at an arbitrary opening degree. The one-touch open / close leg type tripod using the tripod opening method according to claim 1, wherein a sliding knob is provided on the connecting pin or the sliding ring as the sliding body of the tripod. 3. The connecting pin when the stay body is used as the sliding portion of the tripod, or the sliding ring when the support column of the main leg is used, respectively. One-touch opening and closing leg type tripod as described in 1.

Images