JPS6129786A - Regulator for angle of aperture of pivotal mounting member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a foot rest that is placed on a chair to keep the position (height) f of the feet appropriate when working on a desk;
The present invention relates to an opening angle adjustment device for other pivot members, which can adjust the height of a top plate, etc. supported by the same material, depending on the purpose of use.

For example, when working at a desk, in order for the user to take a comfortable and natural posture, the height of the chair and desk must correspond to the height of the user, and the height of the feet is also important. Therefore, the height of existing chairs, desks, and footrests can be adjusted.

[Conventional example]

Conventionally, in the above-mentioned desks, footrests, and others, the overall height can be freely adjusted to high or low by forming the legs with pivot members and adjusting the opening angle of the pivot members. However, the existing opening angle adjusting device for a pivot member is, for example, a system in which a screw rod is rotatably installed on a frame, and an actuator screwed to the screw rod and each pivot member are connected to each other. Most of them were of the screw type connected by a link mechanism.

However, according to such conventional examples, the screw rods must be provided on both sides, and when adjusting the opening angle, both screw rods must be operated, and the top plate etc. must be placed in a horizontal position. If it is necessary to adjust the height of the lever while maintaining a predetermined angle, there are problems in that the configuration becomes complicated and the operation becomes troublesome.

[Problem that the invention seeks to solve]

Therefore, as a result of studies in view of the above-mentioned problems of the conventional example, the present invention has been developed by pivoting the attached members to each other in a predetermined shape, and attaching an appropriate operating shaft to one end side from the pivot point of the inner pivoted member. By constructing the structure so that it can be rotated and moved laterally via the feeding means, it is an extremely simple structure, and the opening angle can be adjusted with easy operation, and the top plate of the tab can be kept in a predetermined state. Its purpose is to allow quick height adjustments.

[Means for solving problems]

That is, the present invention is located on the back surface of a top plate, etc., and one end of the first pivoted member and the second pivoted member are respectively pivotally attached to the front end and the rear end of the top plate, etc., and the inner pivoted member is attached. They are pivotally connected to each other so that the sides form an X-shape and can be opened and closed, and a pivot point of the inner pivoted member is located on one of the inner pivoted members. An operating shaft is installed on one end side of the pivot member so that it can be moved laterally in the length direction of the pivoted member and can be rotated,
The operating shaft is connected to the other pivoted member so as to be movable laterally in the length direction thereof through a feeder JR provided so as to be movable laterally when the operating shaft is rotated. By configuring this, the above-mentioned problems are solved.

〔Example〕

FIG. 1 is a side view showing the simplest embodiment of the present invention, and FIGS. 2 to 6 show embodiments in which the present invention is applied to a footrest.

There is a top plate IK shown in Fig. 1, and one end of each of the pivoted member 2 and the second pivoted member 3 is rotatably provided at the front end and rear end of the back surface thereof, respectively. a.

The inner pivot member 2.3 is pivoted at a pivot point C on the back side of the top plate 1 in a diagonal manner so as to form a substantially X-shaped side surface. This makes it possible to rotate approximately at the center of each.

Here, both types of attachment points a of the top plate 1 and the inner cover pivot attachment member 2.3 are
, b, one or both of the pivot points are pivoted with a pivot inserted through a long hole (not shown) so that the pivot point can be moved by a predetermined distance in the front and back direction of the top plate 10. ing.

By making the inner pivoted member 2.3 rotatable about the pivot point C as described above, both members 2.3 are rotatable.
The pivot points a% b of 3 and the free ends 2' and 3' of the same member can be opened and closed, respectively, and the opening angle α formed by both members 2.3
can be adjusted arbitrarily, and this opening angle α can be increased,
Alternatively, the height of the top plate 1 can be adjusted by adjusting each size to be smaller.

The operating shaft 4 is rotatably located between the inner pivoting members 2.3 and located closer to one end of the pivot point C of the inner pivoting member 2.3. The feeding means is supported on one of the pivoted members so as to be able to move laterally in the direction perpendicular to the length direction of the member, and is provided to enable the lateral movement when the pivoted member is rotated. (not shown), the operation @4 is related to the other pivoted member, and when the operation shaft 4 is thereby rotated counterclockwise in the figure, it is moved to the left by the feeding means. The opening angle α of both pivoted members 2.3 can be adjusted to be larger or smaller by moving and rotating clockwise to move to the right.

Next, the embodiment shown in Figure 6 (not Figure 2) will be described in detail.

In the figure, reference numeral 1 denotes a top plate formed with biaxial dimensions sufficient for placing feet, and brackets 5 and 6 are fixed to the left and right sides of the front and rear ends of the top plate, respectively. It is set up.

2 indicates the first pivoted member, and 3 indicates the second pivoted member.

Both the first and second pivoted members 2.3 are two structural members 2a, 2a and 3a s each made of a band-shaped metal plate or the like.
By constructing the connecting rods 2b and 3b at one end which becomes the free end of 3a, each frame is integrally and independently formed.

The pivoted member 2.3 connects one end of each of the structural members 2a, 2a and 3a, 3a to the brackets 6.6 and 5.6.
The respective free ends 2 are pivotably connected to the top plate 1 by pivots 7.7 and 8.8.
r and s 1 intersect at approximately the center so that they are oriented in the front-rear direction, and each component 2a is connected to the axis 9 at the intersection.
.

3a, 2a, and 3a are pivotally connected, the two pivoted members 2.3 have a substantially X-shaped side surface and are formed to be rotatable about the pivot shaft 9.

4 indicates an operating axis.

This operating shaft 4 is located on one end side from the pivot point C of the second and second pivoted members 2.3 of the second pivoted member 3, and passes through it. long hole 10.10
It is installed by inserting it so that it can be rotated and moved laterally.

Here, the elongated holes 10.10 are provided long in the length direction of the component parts 3a, 3a, and the operations @4 for the elongated holes 10, 10 are performed near both ends thereof. Two flanges 4a, 4B are fixedly installed with an appropriate distance in the axial direction, and the opening edge 10a of the elongated hole 1o is engaged between the two flanges 4a, 4a as clearly shown in FIG. By fitting, movement in the axial direction is prevented, and the knob 4b is fixed to one end protruding outward from one long hole 10.

The operation shaft 4 is located in a long hole provided in the image forming members 2a, 2a of the first pivoted member 2, on one end side from the pivot point C, that is, in the second pivoted member 3. 1o is located on the side opposite to the open end side, and is provided coaxially through a feeding means 11 which is provided so as to be able to move laterally along the elongated holes 10, 10 by rotating the operating shaft 4. 4 is associated with the pivoted member 2.

In other words, the image forming member 2 in the pivoted member 2 of the above
There is a long hole 1 on one end side of a and 2a, which is long in the length direction.
2.12 is inserted through the tube, and the above operation @4 is performed on the tube long holes 12, 12.
is inserted.

Here, as the above-mentioned feeding means 11, the above-mentioned image forming member 2
Ranks 11a and 11a are provided along the lower edges of the long holes 12 and 12 in a and 2a, and pinions 11b and 111b are provided near both ends of the operating shaft 4, respectively, and
1b, 11b and the racks 11a, 11af: Are they constructed by meshing with each other?
The means 11 is not limited to the illustrated example, and may have any configuration as long as it can be moved laterally along the elongated holes 10, 10.degree. 12.12 by rotating the operating shaft 4.

Further, by rotating the two pivoted members 2.3 about the pivot points C, the distance between the pivot points a and b of the two pivoted members 2.3 and the top plate 11 and the free space between the two pivoted members 2.3 and the top plate 11 are adjusted. End 2/, 3
Since the interval f changes, one end of the image forming members 3a, 3a of the -10,000 pivoted member, in the illustrated example, the second pivoted member 3, is formed by a long hole penetrating the bracket 6. It is movably pivotally connected by inserting a pivot 8 through 5a, thereby making it possible to absorb changes in the distance between the two points a and b.

In the configuration of the illustrated example, for the top plate 1,
Both pivoted members 2.3 serve as legs, and their free ends 2', 3' abut on a footrest surface 13 such as the floor as shown in FIGS. 4 and 5. will be retained.

Although the top plate 1 in the illustrated example is held in a slightly inclined state, it is of course possible to have other configurations in which it is held in a horizontal state.

Figure 4 shows a state in which the height of the top plate 1 is slightly lower than the intermediate position within the height adjustment range, and Figure 5 shows a state where the top plate 1 is close to its maximum height. There is.

In FIG. 4, when the operating shaft 4 is rotated clockwise, the operating shaft 4 is moved laterally to the right along the elongated hole 12.12 by the feeding means 11, but at this time the operating shaft 4 is moved to the second Since the pivoted member 3 is moved laterally within the elongated holes 1Q and 1o, the one end side of the pivoted member 3 of 2 is lowered relative to the one end of the pivoted member 2 of E]. As a result, both pivoted members 2
．． Three cars were rotated in the direction of overlapping, and one car was destroyed and the pivot joint was destroyed 2.3
The opening angle α becomes smaller.

That is, at the end of the rightward movement of the operating shaft 4, the opening angle α becomes the minimum, and thereby the height of the top plate 1 becomes the lowest.

When the operating shaft 4f is rotated in the counterclockwise direction in the state shown in FIG. The opening angle α of both members 2.3 increases as shown in FIG. 5, and the operating shaft 4
At the end of the lateral movement to the left, the opening angle α becomes maximum.

That is, the height of the top plate 1 can be made highest.

〔Effect of the invention〕

Since the present invention is constructed as described above, the opening angle α of both pivoted members 2.3 can be adjusted at will by simply rotating the operating shaft 4 in the forward and reverse directions. In addition, since the operating shaft 4 is configured to move laterally along the pivoted member 2 or 3 while rotating, the operation is smooth, and both pivoted members 2 and 3 have a side surface approximately X. Since the operating shaft 4t is pivotally mounted in the shape of a letter and is arranged at one end thereof, the lateral movement stroke of the operating shaft 4 can be made small and the opening angle of the expansion angle can be quickly adjusted. The feeding means 11 of the shaft 4 can be easily formed by the operating shaft 4 and some pivoted members 2, and does not require any other special components. 11
Since it also functions as a stopper, it can be held at the desired opening angle without the need for a separate stopper or special operation, and the structure is simple and can be manufactured at low cost. .

[Brief explanation of drawings]

Fig. 1 is a schematic side view of the simplest embodiment of the opening angle adjustment device for a pivot member according to the present invention, Fig. 2 is a perspective view showing an embodiment in which the device is incorporated into a footrest, and Fig. 3 The figure is a plan view of the same embodiment, and Figures 4 and 5 are ■-■ in Figure 3.
FIG. 6 is a longitudinal sectional side view of each operating state as viewed along the line in the direction of the arrow, and FIG. FIG. 1...Top plate 2...Ol pivoted member 3 fist...Second pivoted member 4...Operating shaft 4a14a11a...Flange 1o... ...-long hole 10a@...opening edge 11 of the long hole, fist...feeding means

Claims (3)

[Claims] (1) On the back surface of the top plate, etc., one end of the first pivoted member and the second pivoted member are pivotally connected to the front end and rear end of the top plate, respectively, so that the two pivoted members are connected to each other. So that the side has an approximate X-shape,
The operating shaft is pivotally connected to be openable and closable, and the operating shaft is pivoted from the pivot point of both pivoted members to one side end of the pivoted member. The operating shaft is installed so that it can be moved laterally in the length direction of the attachment member and can be rotated, and the operating shaft is moved to the other side through a feeding means that is provided so as to be able to move laterally when the operating shaft is rotated. 1. An opening angle adjustment device for a pivot-mounted member, characterized in that the device is connected to the pivot-mounted member so as to be movable laterally in the longitudinal direction of the pivot-mounted member. (2) The opening of the pivot member according to claim 1, in which one pivot member is provided with a long hole in its length direction so that the operation shaft can be rotated and moved laterally. Angle adjustment device. (3) The operating shaft moves in the axial direction by slidably fitting the opening edge of the long hole of the pivoted member between two flanges arranged in parallel at a distance at each end of the operating shaft. An opening angle adjusting device for a pivot member according to claim 1, wherein the opening angle adjustment device is configured such that: