JP2004286231A - Telescopic tripod - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a telescopic tripod used mainly for fixing a camera which locks and releases each leg simultaneously by an eccentric mechanism arranged at the legs. <P>SOLUTION: The telescopic tripod is formed by a telescopic type inner extensible leg 16 connected to a flexible wire 13 and a telescopic type outer extensible leg 15 having an eccentric function. The telescopic type inner extensible leg 16 and the telescopic type outer extensible leg 15 are formed in double pipe structure. The leg 16 and the leg 15 are both connected to each other at the end by a leg fixing screw 17, and the outer extensible leg 15 is rotated by transmitting the rotation of the inner extensible leg 16 simultaneously. The outer extensible leg 15 is fixed and released by the eccentric function in which the semi-cylindrical body of the outer extensible leg 15 having an arc surface is made eccentric and connected face to face with each other. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a tripod that can simultaneously adjust a tripod for fixing an article at a height position, mainly a tripod used for fixing a camera.

2. Description of the Related Art Conventionally, a tripod for a camera is known in which a connecting mechanism between the tripods has a structure such as a thumb screw type, a lock nut type, and a lever type.
However, in order to adjust the total length of the tripod, each clamp was adjusted manually by loosening or tightening it.In addition, for the adjustment in the middle, the tripod should be as thick as possible. Was shortened.
Therefore, development of a camera tripod that can simultaneously adjust the tripod for quick and easy setting of the tripod is desired (see Patent Document 1).
In the above-described known technique, the camera is mounted so as to extend below the camera, is divided into two or more leg elements in a longitudinal direction, and the leg elements are connected so as to smoothly slide in the longitudinal direction and expand and contract the entire length. Leg, and a backflow prevention mechanism provided between the leg elements so as to secure an extension distance when the leg is extended, and when the leg is shortened, releasing the backflow prevention state of the uppermost backflow prevention mechanism, This is a camera tripod provided with a backflow prevention release mechanism for sequentially releasing the backflow state of the backflow prevention mechanism of the lower leg element.

JP-A-2003-97791

  SUMMARY OF THE INVENTION The present invention provides a tripod which is mainly used for fixing a camera and which can simultaneously lock and release each leg by an eccentric mechanism provided on the leg.

The telescopic tripod of the present invention is provided with a rotary gear provided at a lower portion of a pan head, a worm gear meshing with the rotary gear, a simultaneous operation handle for rotating the worm gear, and integrally connected to the rotary gear in a pipe shape. A simultaneous operation center gear, three leg individually adjusting planetary gears meshing with the simultaneous operation center gear, a leg individual operation switching dial integrally connected to the leg individual adjusting planetary gear, and a leg individual operation switching dial. A leg-specific operation handle detachably fixed, a flexible wire connected to the operation handle and extending to the leg mounting portion through the center of the leg-specific adjusting planetary gear, and a telescopic type connected to the flexible wire. Inner telescopic leg, and a concentrically arranged outer end of the inner telescopic leg, the tip of which is fixed to the inner telescopic leg, and eccentrically couples a half-cylinder having an arc surface face to face, Is made consists outer telescopic Ashiko of telescoping having an eccentric function of stepped portions to the coupling portion side longitudinal direction is formed.
Further, the telescopic inner telescopic leg and the telescopic outer telescopic leg are formed in a double pipe structure, and both are connected at a distal end portion to prevent rotation of the inner telescopic leg. The outer telescopic legs are simultaneously transmitted and rotated, and the outer telescopic legs are fixed and released by an eccentric function in which the semi-cylindrical bodies having the arc surfaces of the outer telescopic legs are eccentrically coupled face to face. .

According to the telescopic tripod of the present invention, since the simultaneous operation handle for the tripod is provided immediately below the camera platform for fixing the camera, the locking and unlocking operation of each leg can be performed quickly in a standing posture. There is an effect that can be done.
Further, according to the telescopic tripod of the present invention, the height of the monopod can be adjusted in a standing posture by switching the individual leg operation handle provided on the leg mounting portion, and the lock nut at the lower end of the leg is conventionally used. It is possible to adjust the height in a stable position without loosening the head with one hand while supporting the camera platform with one hand.
According to the telescopic tripod of the present invention, each leg can be simultaneously locked and released by the eccentric mechanism provided inside the double-tube type leg, so that a protrusion is formed on the outer surface of each leg. This has the effect of providing a neat appearance without being formed.
Further, according to the telescopic tripod of the present invention, since the backflow is not prevented by using gravity, the lock position can be operated at any position with the manual simultaneous operation handle, so that the tripod can be stably held at the target point. Can be fixed.

The telescopic tripod of the present invention is provided with a rotary gear provided at a lower portion of a pan head, a worm gear meshing with the rotary gear, a simultaneous operation handle for rotating the worm gear, and integrally connected to the rotary gear in a pipe shape. A simultaneous operation center gear, three leg individually adjusting planetary gears meshing with the simultaneous operation center gear, a leg individual operation switching dial integrally connected to the leg individual adjusting planetary gear, and a leg individual operation switching dial. A leg-specific operation handle detachably fixed, a flexible wire connected to the operation handle and extending to the leg mounting portion through the center of the leg-specific adjusting planetary gear, and a telescopic type connected to the flexible wire. Inner telescopic leg, and a concentrically arranged outer end of the inner telescopic leg, the tip of which is fixed to the inner telescopic leg, and eccentrically couples a half-cylinder having an arc surface face to face, In which stepped portions engaging portion side vertical direction is composed of an outer telescopic Ashiko of telescoping having formed eccentrically function.
Further, the telescopic inner telescopic leg and the telescopic outer telescopic leg are formed in a double pipe structure, and both are connected at a distal end portion to prevent rotation of the inner telescopic leg. The outer telescopic legs are simultaneously transmitted and rotated, and the outer telescopic legs are fixed and released by an eccentric function in which the semi-cylindrical bodies having the arc surfaces of the outer telescopic legs are eccentrically coupled face to face. .

Hereinafter, an embodiment of a telescopic tripod according to the present invention will be described with reference to the drawings.
FIG. 1 shows a partial cross-sectional front view of the entire structure of the telescopic tripod of the present invention, and FIG. 2 shows an enlarged perspective view of a main part.
A center axis 2 for supporting a camera platform 1 from below is provided. A rotating gear 3 is provided below the camera platform 1 so as to be rotatable around the central axis 2. A simultaneously operated central gear 4 is integrally connected to the rotating gear 3 in a pipe shape and rotatably provided around the central axis 2.
A worm gear 5 meshing with a gear formed on the rotary gear 3 is provided on the outer periphery of the rotary gear 3 and arranged in a direction perpendicular to the worm gear 3. The worm gear 5 is rotated at an axial end of the worm gear 5. A simultaneous operation handle 6 is provided.
Therefore, when the simultaneous operation handle 6 is rotated, the worm gear 5 is rotated to rotate the rotary gear 3, and further, the simultaneous operation center gear 4 connected to the rotary gear 3 in a pipe shape is rotated.

The simultaneous operation center gear 4 is provided with three leg individual adjustment planetary gears 7 on the outer peripheral surface, and the leg individual adjustment planetary gear meshing with the simultaneous operation center gear 4 by rotating the simultaneous operation center gear 4. 7 are simultaneously rotated in the same direction.
The rotating gear 3, the worm gear 5, the central gear 4 for simultaneous operation, and the planetary gear 7 for individually adjusting the legs are usually covered with a cover, but are shown with the cover removed for the sake of explanation. Was.
As shown in FIG. 3, an individual leg operation integrally connected to the individual leg adjusting planetary gear 7 above a cover (not shown) on the rotation center axis of the individual leg adjusting planetary gear 7 located on each leg of the tripod. A switching dial 8 is provided.
As shown in FIG. 4, the leg individual operation switching dial 8 is provided with a rotating disk 9 which freely rotates concentrically at the center and one insertion hole 10 on the peripheral surface.
An up-and-down bar-shaped individual leg operation handle 11 having one end fixed to the turntable 9 is provided, and a handle knob 12 is provided at a right angle at the tip of the leg individual operation handle 11.
As shown in FIG. 5, the rotation of the individual leg operation switching dial 8 is transmitted to the individual leg operation handle 11 by tilting the individual leg operation handle 11 and inserting the handle knob 12 into the insertion hole 10. The rotation of the individual leg operation switching dial 8 is not transmitted to the individual leg operation handle 11 by raising the individual leg operation handle 11 and pulling out the handle knob 12 from the insertion hole 10.

As shown in FIG. 4, one end of a flexible wire 13 is fixed to the turntable 9, and the other end of the flexible wire 13 is fixed to an inner telescopic leg 16.
Since the flexible wire 13 extends to the leg mounting portion 14 through the center of the individual leg-adjusting planetary gear 7, the rotation of the individual leg-adjusting planetary gear 7 is controlled by the insertion hole 10, the handle knob 12, the individual leg operating handle 11, and the rotation. It is transmitted to the inner telescopic leg 16 via the board 9 and the flexible wire 13.
In the three directions of the leg mounting portion 14 supporting the center shaft 2, semi-cylindrical bodies having an arc surface shown in FIG. 6 are eccentrically coupled to face each other, and a step is formed in the longitudinal direction of the side surface of the coupling portion. The outer telescopic leg 15 is fixed, and the outer telescopic leg 15 serves as the base of the tripod shown in FIG.
Further, the outer telescopic leg 15 is provided with a telescope type outer telescopic leg 15 which is slidably connected to each other and arranged concentrically in the same shape.
As described above, an inner telescopic leg 16 is connected to the flexible wire 13 inside the outer telescopic leg 15 as shown in FIG. 2, and the inner telescopic leg 16 is a rectangular cylindrical body having a rectangular cross section. They are slidably connected to each other so that they can be telescopically expanded and contracted.
That is, the inner telescopic leg 16 and the outer telescopic leg 15 are of a telescope type having a structure for preventing the flange or the like from coming off, and have substantially the same length in which the diameter is gradually reduced from a large diameter to a small diameter. It consists of a combination of long cylinders.
Then, as shown in FIGS. 2 and 7, the distal ends of the inner telescopic leg 16 and the outer telescopic leg 15 are connected to each other by a leg fixing screw 17.
Therefore, when the inner telescopic leg 16 is rotated by the rotation of the flexible wire 13, the inner telescopic leg 16 and the outer telescopic leg 15 are fixed by the leg fixing screw 17 at the tip, so that the outer telescopic leg 16 is The leg 15 is also rotated at the same time.

Next, the operation of the telescopic tripod of the present invention will be described below with reference to the drawings.
First, in order to simultaneously operate the tripods, it is confirmed that the handle knobs 12 of the three individual leg operation handles 11 are inserted into the insertion holes 10 of the individual leg operation switching dial 8 as shown in FIG. .
After confirmation, the simultaneous operation handle 6 shown in FIG. 4 is rotated clockwise to the unlocking side (for example, clockwise), and when the rotational power is applied to the worm gear 5, the rotary gear 3 rotates left and The simultaneously operated central gear 4 connected in a pipe shape rotates leftward, and the individual legged planetary gears 7 connected to three places of the simultaneously operated central gear 4 simultaneously rotate in the opposite direction, that is, rotate rightward.
Further, the leg individual adjustment planetary gear 7, the leg individual operation switching dial 8, the leg individual operation handle 11, the handle knob 12, and the turntable 9 simultaneously rotate clockwise, and the flexible wire 13 rotates clockwise.
Since the inner telescopic legs 16 connected by the flexible wires 13 simultaneously rotate in the same direction, and the inner telescopic legs 16 and the outer telescopic legs 15 are fixed, the outer telescopic legs 15 are connected together. Turn clockwise about 90-180 °.
Then, since the outer telescopic leg 15 attached to the leg mounting portion 14 is fixed, the step portion of the side vertical connecting portion of the next outer telescopic leg 15 is viewed from the tightened (fixed) state in FIG. The eccentricity release function is activated by rotating clockwise to the retractable state of 6 without tightening, the locked state of the outer telescopic leg 15 is released at the same time as the tripod, and the leg can be extended by gravity.
In the embodiment shown in FIG. 6, the outer telescopic leg 15 is locked and locked at a position where the outer telescopic leg 15 is rotated left by 90 ° (counterclockwise rotation).

When each leg is adjusted to a predetermined height, the simultaneous operation handle 6 is then counterclockwise turned to the lock fixed side (for example, counterclockwise) and reverse rotation power is applied to the worm gear 5 to rotate the rotation gear 3. The clockwise rotation causes the simultaneous operation center gear 4 connected to the rotating gear 3 in a pipe shape to rotate rightward, and the individual leg adjustment planetary gears 7 connected to the three positions of the simultaneous operation center gear 4 simultaneously rotate leftward.
Furthermore, the leg individual operation switching dial 8, the leg individual operation handle 11, the handle knob 12, and the turntable 9 simultaneously reversely rotate, and the inner telescopic legs 16 connected by the flexible wires 13 simultaneously rotate in the same direction, respectively, and the outer telescopic. The leg 15 is rotated counterclockwise by about 90 to 180 °.
Then, the eccentric fixing function of the outer telescopic leg 15 is activated from the non-tightened telescopic state shown in FIG. 6 to the tightened (fixed) state shown in FIG. Position is maintained.
When the legs are shortened and stored, the simultaneous operation handle 6 is rotated to the right to release the lock, and the inner telescopic leg 16 and the outer telescopic leg 15 are fixed to the leg mounting portion 14 as shown in FIG. 8 can be maintained by rotating the simultaneous operation handle 6 counterclockwise and locking it.

Next, the height adjustment of the monopod alone will be described below with reference to the drawings.
After selecting the monopod for which the height adjustment is to be performed, as shown in FIG. 4, the individual leg operation knob 11 is raised from the insertion hole 10 of the individual leg operation switching dial 8, and the handle knob 12 is pulled out. Is disconnected from the leg individual operation handle 11.
Then, the leg individual operation handle 11 is rotated to the left (counterclockwise rotation) to directly rotate the flexible wire 13 to the left, and the inner telescopic leg 16 and the outer telescopic leg 15 connected by the flexible wire 13 are connected. Simultaneously, the eccentric release function of the outer telescopic leg 15 operates to release the locked state.
When the telescopic leg is released, the leg is adjusted to an arbitrary height and the leg individual operation handle 11 is rotated clockwise (rotated clockwise), and the inner telescopic leg 16 connected to the flexible wire 13 is connected to the outer leg. The telescopic legs 15 are simultaneously moved, and the eccentric fixing function of the outer telescopic legs 15 works to fix the outer telescopic legs 15 in the locked state.
When the independent adjustment of the single leg is completed, the individual tripod operation can be performed by tilting the individual leg operation handle 11 and inserting the handle knob 12 into the insertion hole 10 of the individual leg operation switching dial 8.

It is a front view showing the whole composition of the extendable tripod of the present invention. It is a principal part expansion perspective view which shows the whole structure of the telescopic tripod of this invention. It is a schematic explanatory view showing a simultaneous operation center gear of the present invention. It is a principal part sectional front view of the telescopic tripod of this invention. It is a principal part sectional front view which shows the leg individual operation handle of this invention. It is sectional drawing which shows the inner telescopic leg and the outer telescopic leg of this invention. It is a schematic explanatory view showing the full length of a leg of the present invention. It is a schematic explanatory view showing leg storage of the present invention.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Head 2 Central axis 3 Rotating gear 4 Simultaneous operation central gear 5 Worm gear 6 Simultaneous operation handle 7 Leg individual adjustment planetary gear 8 Leg individual operation switching dial 9 Turntable 10 Insertion hole 11 Leg individual operation handle 12 Handle knob 13 Flexible wire 14 Leg mounting part 15 Outer telescopic leg 16 Inner telescopic leg 17 Leg fixing screw

Claims (2)

  A rotating gear provided at a lower portion of the camera platform, a worm gear meshing with the rotating gear, a simultaneous operating handle for rotating the worm gear, a simultaneous operating central gear integrally connected to the rotating gear in a pipe shape, Three individually adjustable planetary gears that mesh with the operation center gear, individual leg operation switching dials integrally connected to the individual leg adjustment planetary gears, and individual leg detachably fixed to the individual leg operation switching dials An operating handle, a flexible wire connected to the operating handle and extending to the leg mounting portion through the center of the leg individual adjustment planetary gear, a telescopic inner telescopic leg connected to the flexible wire; A semi-cylindrical body having an arc surface is eccentrically coupled to face each other, and the stepped portion is arranged concentrically on the outer side of the telescopic leg and the tip is fixed to the inner telescopic leg. Telescopic tripod characterized by comprising consist and made the outer telescopic Ashiko of telescoping having an eccentric function. The telescopic inner telescopic leg and the telescopic outer telescopic leg are formed in a double-pipe structure, and both are connected at a tip portion to rotate the inner telescopic leg to the outer telescopic leg. The outer telescopic leg is fixed and released by an eccentric function in which the semi-cylindrical body having the arc surface of the outer telescopic leg is eccentrically coupled to face to face and rotated simultaneously by transmitting to the child. The telescopic tripod according to claim 1.

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