JPS5842654Y2 - Connection and angle adjustment device for two parts - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention particularly provides a device for connecting and adjusting the angle of two members forming a support for a lectern, a light stand, a microphone stand, etc.

Conventionally, a lectern is generally used by being placed on a desk, etc., and is made up of a plate-shaped lectern body that holds books and a fixed support base that supports it. There is.

By the way, there are some lecterns that can be used while standing or lying down, but conventional products of this type have a fixed structure in which the pillars supporting the lectern body are integrally formed with the pedestal. In some cases, the pillar was divided into several sections and fixed with screws so that they could be expanded and contracted, and in rare cases, the support was divided into several sections and made expandable and retractable, and the angle at which the columns were attached to each other could be changed.

However, the structure for adjusting the angle of the mounting position is complex and requires a large number of parts, resulting in high costs, and the adjustment operation is also time-consuming.

The present invention was developed in view of the above-mentioned points, and its purpose is to be able to adjust the mounting angle of two members, such as columns, with one-touch operation, and also to be able to move from any angle to a different angle. To provide a mutual connection and angle adjustment device for two members that can be reliably changed with a one-touch operation, has simple structure and assembly, and is inexpensive to manufacture.

The details of the present invention will be described below as an example in which it is applied to a support for a lectern as shown in FIGS. 1 to 7.

Reference numeral 1 designates a supporting vertical rod portion as a mounting member, and 2 designates a pivoting rod portion as an attached member that is attached to the supporting vertical rod portion 1 via an angle adjustment mechanism portion 3 so as to be freely adjustable in angle.

The supporting vertical rod portion 1 includes, for example, a large-diameter fixed rod portion 5 erected at the center of the pedestal 4, a medium-diameter first telescopic rod portion 6 telescopically inserted into the fixed rod portion 5, It is formed by a second telescopic tube portion 7 of a small diameter that is telescopically inserted into the first telescopic rod portion 6.

and a medium-diameter second telescopic tube portion 6 for the fixed rod portion 5;
Expansion and contraction of the second telescopic tube section 7 having a small diameter with respect to the first telescopic tube section 6 is performed using fixing screws 8, 9, and 10 screwed into the fixed tube section 5, the first telescopic tube section 6, and the second telescopic tube section 7, respectively. This is done by loosening or tightening.

Further, the angle adjustment mechanism section 3 is attached to the upper end of the second telescopic tube section 7 by fitting the neck section 11A formed on the lower surface thereof, and has a vertical rod section for supporting the pivot rod section 2 on the upper circumferential surface thereof. Several teeth 1 to determine the mounting angle relative to 1
1a, 11b, 11c.

11d and 11e, a ratchet 11 having a U-shaped cross section rotatably attached to the ratchet 11 using a shaft 12, and a riding plate 13 having a U-shaped cross section and coaxially attached to the passing plate 13 using the shaft 12. The attached case 14 and the case 1
4, the toothed portions 1 law 11b, 11c,
11d.

a stopper 16 having an elastic bending piece 16A at its front end that can be pressed against the ratchet 11;

A protruding piece 11f protruding from the lower end side of the ratchet 11e, an L-shaped rotation regulating rod 17 pivotally attached to the protruding piece 11f so as to restrict the rotation of the overboard plate 13, and the ratchet 11. It is formed from an engaging shoulder portion 11g formed on the side surface and through which the riding plate 13 can be freely engaged and detached, and a holding cylinder 14A that is fixed to the upper surface of the case 14 and is held into which the pivoting rod portion 2 is inserted. be done.

Further, the pivot rod portion 2 has a weight 18 having a slit 18A formed on its peripheral surface attached to its rear end, and a large-diameter first telescopic tube 19 inserted into the holding tube 14A. A second telescoping rod 20 of a small diameter slidably inserted into the first telescoping tube 19, a fixing screw 21 for inserting and fixing the first telescoping rod 19 into the holding tube 14A, and the first telescoping rod 20. Telescopic tube 1
9 and the second telescopic pipe 2 is screwed into the first telescopic pipe 19.
0 is formed with a fixing screw 22 that is telescopically threaded.

One embodiment of the present invention has the above-mentioned configuration, and is suitable for changing the mounting angle of the pivoting rod 2 with respect to the supporting vertical rod 1 as a mounting member from the horizontal position shown in FIG. 3, for example. First, the rotation regulating rod 17 is erected, and then the riding plate 13 rotated around the shaft portion 12 is attached to the rotation regulating rod 17.
to regulate its rotation.

Then, when the pivoting rod part 2 is rotated together with the case 14 around the shaft part 12, the elastic bending piece 16A of the stopper 16, which is energized by the coil spring 15 inside the case 14, touches the circumferential surface of the ratchet 11. Several tooth-shaped parts 11a, 11b, 1 formed
1c, as shown in FIG.
6A is engaged with the toothed portion 11c, so that the mounting position of the pivoting rod portion 2 relative to the supporting vertical rod portion 1 can be changed to approximately 45°.

When the pivoting rod 2 is further rotated, the elastic bent piece 16A of the stopper 16 rides on the riding plate 13 whose rotation is restricted by the rotation regulating rod 17, as shown in FIG. The engagement from the toothed portion 11c of 11 can be released.

In this case, if the rotation regulating rod 17 is suspended below the case 14 as shown in FIG. 7, the pivoting rod portion 2 can be made completely parallel to the supporting vertical rod portion 1.

Next, from the state in which the elastic bent piece 16A of the stopper 16 is folded up on the overpass plate 13 as described above, the pivoting rod portion 2 is slightly pushed down as shown in FIG. When rotated, the riding plate 13, which is elastically held by the elastic bending piece 16A of the stopper 16, moves around the shaft portion 12 into the case 14.
At the same time, it rotates in the opposite direction until it engages with the engagement shoulder 11g formed on the side surface of the ratchet 11.

Even after the overboard plate 13 was locked to the engagement shoulder 11g on the side surface of the ratchet 11 and its rotation was restricted, if the pivoting rod 2 as the attached member was pushed up, the override plate 13 could be climbed on. The elastic bending piece 16A of the stopper 16 is connected to the riding plate 13.
3, the pivoting rod portion 2 can be returned to its original horizontal state with respect to the supporting vertical rod portion 1.

In this way, the pivoting rod part 2 can be attached to the supporting vertical rod part 1 by a one-touch operation of simply lifting and rotating the pivoting rod part 1.
The angle of the mounting position can be adjusted repeatedly.

Moreover, the supporting vertical rod part 1 can be connected to the first telescopic tube part 6 to the fixed rod part 5 by simply loosening or tightening the fixing screws 8, 9, and 10. The length can be adjusted by expanding and contracting the two expandable tube sections 7 respectively.

Further, the pivoting rod part 2 can also be moved to the first telescopic tube part 1 relative to the holding cylinder 14A by loosening or tightening the fixing screws 21 and 22.
9, and the second telescopic pipe part 20 with respect to the first telescopic pipe part 19.
Each can be expanded and contracted to adjust the length.

Although this embodiment has been described as a representative example of the support of a lectern, the present invention can also be applied to mutual angle adjustment of two members such as a light stand, a microphone stand, etc., and its uses are wide-ranging. .

As described above, in the present invention, the mounting angle between two members can be adjusted with a one-touch operation, and the angle can also be reliably changed from an arbitrary angle to a different angle with a one-touch operation.

Moreover, the structure and assembly are simple, so production costs are low.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is an exploded perspective view, and FIGS. 3 to 7 are sectional views showing the operating state of the angle adjustment mechanism. DESCRIPTION OF SYMBOLS 1... Vertical support rod part, 2... Pivoting rod part, 11... Ratchet, 11a, 11b, 11
c, 11d. 11e...Toothed portion, 11f...Protrusion piece,
11g... Engagement shoulder part, 12... Shaft part,
13... Passing board, 14... Case, 1
5... Winding spring, 16... Stopper, 1
6A... Sliding bending piece, 17... Rotation regulating rod.

Claims (1)

[Scope of utility model registration request] A ratchet in which one member is fixed and has several toothed parts formed on its peripheral surface, a rotatable riding plate pivotally connected to the ratchet using a shaft part, and a rotatable riding plate attached coaxially to the shaft part. a case to which the other member is fixed; a stopper pivotally mounted to the case and biased by a spring so as to be pressed against the toothed portion; A mutual connection and angle adjustment device for two members, comprising a rotation regulating rod for regulating the rotation of the riding plate, and an engaging shoulder formed on a side surface of the ratchet for regulating the rotation of the riding plate.