JP3464565B2 - Support stand - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base, three leg bars attached to the base so as to be capable of projecting in the radial direction at equal angular intervals from each other, and provided with a level adjusting mechanism, and the base perpendicular to the base. An outer pipe projecting in a direction, an inner pipe that can be inserted and removed in the axial direction with respect to the outer pipe for height adjustment, a locking unit that locks the inner pipe with respect to the outer pipe, The present invention relates to a support stand having a support means capable of mounting an object to be supported on a top portion of an inner pipe and having a horizontal direction adjusting mechanism.

[0002]

2. Description of the Related Art Examples of such a support stand include a microphone stand, a camera or a video tripod, and the like. As the microphone stand, there are a microphone stand in which each leg is screwed in a fixed direction, and a microphone stand having a folding leg by a link mechanism. With regard to the locking means, there is one in which the tightening sleeve between the outer pipe and the inner pipe is loosened to adjust the height of insertion and removal, and the tightening sleeve is re-tightened and locked at the adjusting position. With regard to the supporting means, there is one in which the tightening screw is loosened to adjust the horizontal direction (rotation angle) of the holder attachment of the object to be supported, and the tightening screw is tightened at this adjusting position to fix the direction.

[0003]

However, in the conventional support stand, when the support stand is arranged on a floor surface having a step, it is possible to vertically orient the column portion including the outer pipe and the inner pipe. Instead, it has the drawback of becoming unstable and easily falling. Further, in the conventional support stand, it is necessary to loosen the tightening sleeve and the tightening screw, and then to tighten again, in order to adjust the height of insertion and removal of the inner pipe and adjust the horizontal orientation of the supporting means. .

Such a conventional support stand has drawbacks in that level adjustment (upright adjustment of the stand) is not possible, and height adjustment and horizontal direction adjustment are troublesome. Therefore, the support stand is supported in a desired state. There was a difficulty in holding the object that should be.

Therefore, it is an object of the present invention to provide a support stand which can always easily adjust an object to be supported at a predetermined position and direction and can stably hold the object at the adjusted position.

[0006]

In order to achieve this object, the support stand according to the present invention is characterized in that each of the above-mentioned leg bars has a folding position substantially parallel to the axial direction of the outer pipe with respect to the base.
It is attached to the base so as to be rotatable around a horizontal axis between a deployment position that projects in a substantially radial direction, and as the level adjustment mechanism, each leg bar extends in a radial direction and extends over the top surface of the leg bar. A hood portion provided on the base so as to wrap and a top surface of the base bar on the base mount side of each leg bar, the height of which can be adjusted in a direction substantially orthogonal to the axis of the leg bar. It is characterized in that it is constituted by a stopper screw head that engages with the inner inclined ceiling of the hood portion of the table.

In a preferred embodiment of the support stand of the present invention, the locking means is a lower sleeve housing part screwed to the top of the outer pipe, and an upper sleeve housing is screwed to the top of the lower sleeve housing part. Part, the lower sleeve housing part and the upper sleeve housing part are arranged in the sleeve housing in a substantially central position of the housing space, and the inner pipe is surrounded, and the rollers are circumferentially equal to each other. A retainer ring having a plurality of roller accommodating groove holes that are separated and accommodated, a roller that is accommodated in the roller accommodating groove hole, and is also disposed in an accommodating space inside the sleeve housing, and surrounds the retainer ring and the roller. A tapered ring means having a taper for pressing the roller radially inward, and the lower three A first compression spring means disposed in an annular space formed in the housing portion to press the tapered ring means upward; and a retainer ring disposed in an annular space formed in the upper sleeve housing portion to move downward. It is constituted by the second compression spring means for pressing.

In another preferred embodiment of the supporting stand of the present invention, the supporting means has a fixing sleeve whose lower end is screwed to the top of the inner pipe, and a head which engages with a seating surface provided on the fixing sleeve. And a torque adjusting bolt projecting above the fixing sleeve, a movable head having a knurled portion and a male screw portion for fixing a holder of an object to be supported and screwed into the screw portion of the torque adjusting bolt, An elastic friction engagement means arranged between the fixed sleeve and the movable head and having a hole through which the torque adjusting bolt passes, and a recess formed in the male screw portion where the top of the adjusting bolt is exposed, and the torque A torque fixing nut screwed onto the exposed top portion of the adjusting bolt.

[0009]

According to the support stand of the present invention, by adjusting the height of the stopper screw head provided on the top surface of each leg bar on the base mounting side, the stopper screw head is provided with the hood portion of the base before it is expanded to the maximum extent. The opening angle of the leg bar is determined by hooking on the inner sloping ceiling of the, and by adjusting the opening angle of the other two leg bars other than the one that climbed on the step, It is possible to stably support the object to be supported by orienting the column.

Further, according to the locking means of the support stand of the present invention, a plurality of rollers circumferentially equidistantly spaced from each other in the sleeve housing are constantly pressed inward in the radial direction to be crimped to the inner pipe, and Since it can be rolled along the inner pipe, the inner pipe can be freely adjusted with respect to the outer pipe, and the inner pipe is automatically locked in this adjusted position.

Further, according to the supporting means of the supporting stand of the present invention, the position of the movable head in the axial direction with respect to the torque adjusting bolt is adjusted so as to adjust the sliding engagement strength of the elastic friction engaging means, and the movable head is moved to this position. The head assembly of the torque adjusting screw, the movable head and the torque fixing nut is integrated by screwing the torque fixing nut onto the top end of the torque adjusting bolt to fix the head. As a result, the head assembly integrally rotates with the fixed sleeve with the adjusted torque, and holds the horizontal orientation of the object to be supported at the rotationally adjusted position.

[0012]

The preferred embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 shows an embodiment of a microphone stand as a preferred embodiment of the support stand according to the present invention. As shown in FIG. 1, the microphone stand 1 includes a base 2, two legs 3 projecting outward from the base 2 in the radial direction, and equidistantly spaced from each other. The outer pipe 4 projecting in the direction, the inner pipe 5 that can be inserted and removed in the axial direction with respect to the outer pipe 4, the locking means 6 that locks the inner pipe 5 with respect to the outer pipe 4, and the inner pipe 5. It has a holder supporting means 7 for holding a microphone provided on the top of the pipe 5.

According to an embodiment of the present invention, the base 2 is shown in FIG.
The upper block 8 for fixing the outer pipe 4 as shown in FIG.
And a lower block 9, and these upper and lower blocks 8 and 9 are combined by a bolt 10 and a nut 10a. The pivot 11 of the leg bar 3 is rotatably fixed between the upper and lower blocks 8 and 9. Each leg bar 3
Is fixed to the pivot 11 by a pin 11a, and the pivot 1 is provided between a folding position that is substantially parallel to the axial direction of the outer pipe 4 with respect to the base and a deployed position that projects substantially in the radial direction.
It is made rotatable about the horizontal axis 1 (see FIG. 5A).

The upper block 8 is provided with a hood portion 12 which projects in the radial direction in which each leg bar 3 extends and overlaps the top surface of the leg bar 3. On the top surface of each leg bar 3 on the base mounting side, there is provided a stopper screw head 13 whose height is adjustable to engage with the inner sloping ceiling 12a of the hood section 12, and the free end of each leg bar has a floor surface. A buffer pad 14 for protection is provided.

To minimize the height of the stopper screw head 13 and to securely lock the leg rod 3 to the base of the leg rod when fully extended, a lateral hole 15 is provided on the side surface of the leg rod. A pressing spring 16 is disposed inside, and the pressing spring 16 spring-loads the click ball 17 outward in the radial direction so that the click ball 17 is pressed into the ball accommodating groove 18 formed in the side wall of the hood portion 12.

When the height of the stopper screw head 13 is the minimum, the click ball 17 makes a click sound in the bolt use groove 18 and elastically fits to hold this maximum deployed state, but the stopper screw If the height of the stopper screw head 13 is increased by unscrewing, the stopper screw head 13
The upper corner of the hook engages with the inner sloping ceiling 12a of the hood portion 12, and the leg bar 3 stops in an intermediate expanded state according to the height of the stopper screw head 13.

As a result, even when any one of the leg rods 3 rides on the step, the outer pipe 4 is adjusted by adjusting the deployment angle of the other leg rods, as shown in FIG. 5 (b).
Can always be oriented vertically.

The outer pipe 4 is fixed to the upper block 8 of the base 2 by a set screw 19. In order to prevent the relative rotation of the inner pipe 5 with respect to the outer pipe 4, it is preferable to fix the square shaft 22 with the bolts 21 to the support block 20 fixed by the outer pipe 4.
A sleeve 23 having an outer surface having a square hole that fits into the square shaft 22 is fixed to the lower end portion of the inner pipe 5 with a screw 24. A flange 23a that is slidably fitted to the inner surface of the outer sleeve is provided at the lower end of the sleeve 23 with the square hole.

Further, it is preferable that the outer pipe 4 is provided with a cord hook 25 for holding a microphone cord extending from the microphone.

FIG. 3 shows a locking means 6 attached to the top of the outer pipe 4 for locking the slipping movement of the inner pipe.
And details of the support means 7 attached to the top of the inner pipe 5 for supporting the holder holding the microphone.

The locking means 6 has a sleeve housing consisting of a lower sleeve housing part 26 screwed onto the top of the outer pipe 4 and an upper sleeve housing part 27 screwed onto the top of the lower sleeve housing part 26.

A retainer 28 that surrounds the inner pipe 5 is arranged substantially at the center of the annular accommodation space in the sleeve housing. In this retainer 28, as shown in FIG.
A plurality (three in the illustrated embodiment) of roller accommodating slots 29 for accommodating and accommodating each other at equal intervals in the circumferential direction are provided. The rollers 30 as shown in FIG. 4D are housed in the roller housing slots 29, respectively.

A tapered ring means for surrounding the retainer ring 29 and the roller 30 and pressing the roller 30 inward in the radial direction is provided in the annular accommodation space in the sleeve housing. In the illustrated embodiment, this tapered ring means comprises a lower tapered ring 31 and an upper tapered ring 32. This lower tapered ring 3
The roller 30 is supported by the wall surface of the annular V-shaped depression formed by 1 and the upper tapered ring 32.

A first compression spring means 33 for pressing the tapered ring means 31, 32 upward is arranged in the annular space in the lower sleeve housing portion 26, and an annular space in the upper sleeve housing portion 27 is A second compression spring means 34 is arranged which presses the retainer ring 28 downward.

A retainer ring 28 is provided in the sleeve housing composed of the lower sleeve housing portion 26 and the upper sleeve housing portion 27 as stopper means for preventing the inner pipe 5 from coming off from the outer pipe 4.
A retaining guide ring 35 surrounding the inner pipe 5 below and having a flange sandwiched between the top end of the outer pipe 4 and the spring seat 26a of the first compression spring means 33 formed in the lower sleeve housing part 26. To provide.

The upper portion of the upper sleeve housing portion 27 is slidably fitted to the inner pipe 5 and has a second compression spring 34.
The nylon collar 36 having the spring seat is arranged. The nylon collar 36 is held by the second compression spring 34 such that the upper shoulder portion thereof abuts the lower shoulder portion of the upper sleeve housing portion 27.

Locking means 6 for the inner pipe 5 according to the invention
According to this, since the plurality of rollers 30 which are circumferentially equidistantly spaced from each other in the sleeve housing are constantly pressed inward in the radial direction to be pressed against the inner pipe 5 and can be rolled, the inner pipe 5 can be rolled. The height of the inner pipe 5 with respect to the outer pipe 4 can be freely adjusted by vertically moving the inner pipe 5 to the outer pipe, and the inner pipe 5 is automatically locked at this adjusting position ((a in FIG. 6). )reference).

As shown in FIG. 3, the lower end of the supporting means 7 which allows an object to be supported to be mounted on the top of the inner pipe 5 and has a mechanism for adjusting the horizontal direction is screwed to the top of the inner pipe 5. A fixing sleeve 37, a torque adjusting bolt 39 having a head 39a that engages with a seat surface 38 provided on the fixing sleeve 37 and protruding above the fixing sleeve, a knurled portion 40, and an object to be supported, that is, as illustrated. In the case of the embodiment, the microphone holder 42 of the microphone 41 (see FIG.
A movable head 44 that has a male screw portion 43 for fixing (see) and is screwed into the screw portion 39b of the torque adjusting bolt 39.
And.

Further, the supporting means 7 has a fixed sleeve 37.
And the movable head 44, and an elastic friction engagement means 45 having a hole through which the torque adjusting bolt 39 passes, for example, a plurality of rubber washers and the like, and the top of the torque adjusting bolt 39 formed on the male screw portion 43 are exposed. And a torque fixing nut 47 screwed onto the exposed top of the torque adjusting bolt 39.

The seat surface 38 of the fixed sleeve 37 is preferably a washer which is attached to the fixed sleeve 37 and is arranged on the lower end surface of a vibration-proof rubber 48 having a shaft hole. It is preferable to attach a vibration-proof rubber 49 having a shaft hole also to the movable head 44.

A wrench hole 50 into which a wrench, for example, a hexagon wrench is inserted, is provided on the end surface of the torque adjusting bolt 39 opposite to the head 39a. Further, a wrench hole 5 for inserting a wrench, for example, a hexagon wrench, is provided on the top surface of the torque fixing nut 47.
1 is set.

According to the support means 7 of the support stand of the present invention, the axial position of the movable head 44 with respect to the torque adjusting bolt 39 is adjusted so as to adjust the sliding engagement strength (resistance) of the elastic friction engagement means 45. , The torque adjusting nut 39 for fixing the movable head 44 to this position is screwed onto the top end of the torque adjusting bolt 39, so that the torque adjusting screw 39, the movable head 44 and the torque fixing nut 47 are fixed.
The head assembly is integrated.

Thus, thereafter, when the set torque is applied to the knurled portion 44 of the movable head 44, the head assembly rotates integrally with the fixed sleeve 37, that is, the object to be supported at the rotation adjusted position. In the case of the illustrated embodiment, it is not necessary to hold the microphone 41 and the holder 42 in the horizontal direction (see FIG. 6B), loosen the tightening screw and then tighten the tightening screw as in the conventional case. Is.

The above description is merely the description of the preferred embodiments of the present invention, and it is needless to say that various modifications can be made within the scope of the claims. For example, the present invention is not limited to a microphone stand, and can be applied to a stand that supports various objects in a stable state.

[0036]

According to the support stand of the present invention, the level adjustment (perpendicularity adjustment) of the support stand is performed without loosening the tightening screw and then performing the desired adjustment as in the conventional case, and then tightening the tightening screw. ), Height, and horizontal orientation can be easily adjusted and held in the adjusted position.

[Brief description of drawings]

FIG. 1 is a perspective view of a microphone stand according to an embodiment of a support stand of the present invention.

2A and 2B show a base and leg portions of a support stand of the present invention, FIG. 2A is a side view with a partial cross section, and FIG. 2B is a bottom view seen from the bottom.

FIG. 3 is a partial cross-sectional side view showing the lock means and the support means of the support stand of the present invention.

FIG. 4 shows a retainer and roller of a locking means of a support stand according to the present invention, (a) a side view of the retainer,
(B) is a vertical cross-sectional view of the retainer, (c) is a horizontal cross-sectional view of the roller accommodating slot, and (d) is a side view of the roller.

FIG. 5 shows the lower part of the inventive support stand, (a)
Is an explanatory view showing a state in which the leg bar is folded, and (b) is an explanatory view showing a state in which the support column is vertically adjusted when one leg bar gets on a step.

6A and 6B are explanatory views showing an adjustment state of the microphone stand of the embodiment of the support stand of the present invention, FIG. 6A shows the height adjustment of the stand, and FIG. 6B shows the adjustment of the horizontal direction of the support means. It is an explanatory view shown.

[Explanation of symbols]

1 microphone stand 2 bases 3 legs 4 outer pipe 5 Inner pipe 6 Locking means 7 Supporting means 8 Upper block 9 Lower block 10 volts 10a nut 11 Axis 11a pin 12 Hood 12a Inclined ceiling 13 Stopper screw head 14 Buffer pad 15 horizontal holes 16 Pressing spring 17 click balls 18 ball storage groove 19 Set screw 20 Support block 21 bolts 22 square shaft 23 Sleeve with Square Hole 25 code hanging 26 Lower sleeve housing part 27 Upper sleeve housing part 28 retainer 29 Roller receiving slot 30 Laura 31 Lower tapered ring 32 upper tapered ring 33 First compression spring means 34 Second compression spring means 35 retaining ring 36 nylon color 37 Fixed sleeve 38 Seat 39 Torque adjustment bolt 40 knurled part 41 microphone 42 microphone holder 43 Male thread 44 Movable head 45 Elastic friction engagement means 46 recess 47 Torque fixing nut 48,49 Anti-vibration rubber 50,51 wrench hole

Claims (5)

(57) [Claims] 1. A base, three leg bars attached to the base so as to be able to project in the radial direction at equal angular intervals from each other, and provided with a level adjusting mechanism, and an outer side projecting vertically from the base. A pipe, an inner pipe that can be inserted and removed in the axial direction with respect to the outer pipe for height adjustment, a locking unit that locks the inner pipe with respect to the outer pipe, and a lock unit that is supported at the top of the inner pipe. In a supporting stand having a supporting means capable of mounting an object to be mounted and having a mechanism for adjusting the horizontal direction, each leg bar is folded at a folding position substantially parallel to the base in the axial direction of the outer pipe. And a mounting position rotatably about a horizontal axis between a base and a deployment position that protrudes substantially in the radial direction. As the level adjusting mechanism, each leg bar extends in the radial direction and protrudes from the top surface of the leg bar. To The hood portion provided on the base so as to overlap the base and the top surface of the base attachment side of each leg bar, and the height can be adjusted in a direction substantially orthogonal to the axis of the leg bar. A support stand comprising a stopper screw head that engages with an inner inclined ceiling of a hood portion of a stand. 2. A spring load is applied radially outward to the side surface of the leg bar to minimize the height of the stopper screw head and securely lock the leg bar to the base of the leg bar in the fully deployed state. The support stand according to claim 1, wherein the click ball and a ball receiving groove for receiving the click ball at the maximum expanded position of the leg bar are provided. 3. A lower sleeve housing part in which the locking means is screwed to the top part of the outer pipe, an upper sleeve housing part to be screwed to the top part of the lower sleeve housing part, a lower sleeve housing part and an upper part. A plurality of roller accommodating units which are arranged at substantially the center of the accommodating space in the sleeve housing formed in combination with the sleeve housing section, surround the inner pipe, and accommodate the rollers in the circumferential direction at equal intervals. A retainer ring having a slot, a roller to be accommodated in the roller accommodating slot, and a retainer ring disposed in the accommodation space in the sleeve housing,
A tapered ring means surrounding the retainer ring and the roller and having a taper for pressing the roller inward in the radial direction; and a tapered ring means disposed in an annular space formed in the lower sleeve housing part to raise the tapered ring means upward. 3. The support according to claim 1 or 2, comprising first compression spring means for pressing the retainer ring downwardly and first compression spring means for pressing the retainer ring downward in the annular space formed in the upper sleeve housing portion. stand. 4. A torque adjusting bolt which has a fixing sleeve whose lower end is screwed to a top portion of an inner pipe, and a head which engages with a seating surface provided on the fixing sleeve and which projects above the fixing sleeve. A movable head that has a knurled portion and a male threaded portion for fixing the holder of the object to be supported and that is screwed into the threaded portion of the torque adjustment bolt; and a movable head that is disposed between the fixed sleeve and the movable head. An elastic friction engagement means having a hole through which the torque adjustment bolt passes, and a torque fixing which is formed in the male screw part and is arranged in a recess where the top of the adjustment bolt is exposed, and which is screwed onto the exposed top of the torque adjustment bolt. support stand according to any one of claims 1 to 3 is constituted by a nut. 5. The support stand according to claim 1, wherein the object to be supported is a microphone.