JPS635068Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support device for a top plate of a desk on which various devices such as a display device and a keyboard, which are computer terminal devices, are mounted.

In order to improve visibility and operability, desks used to carry computer terminal equipment, etc.
There are desk tops that can be tilted at any angle in the front-back direction and fixed at that angle.

The purpose of the present invention is to provide a support device capable of adjusting the angle of the top plate in the front and rear directions as described above, which has a simple structure, can reliably adjust the angle, and is also easy to operate. The structure is such that the support part of the top plate is supported on both sides in the width direction so as to be swingable back and forth on the upper part of the base frame or the base, via the support shaft along that direction.
A sliding member, which has a rack formed on the upper surface side of the base frame or base or the lower surface of the top plate in a direction along the front-back direction of the top plate, can be moved only in the front-back direction of the top plate. At the same time, a connecting rod with a length longer than the distance between the bottom surface of the top plate and the base frame or the top surface of the base is passed between the sliding member and the bottom surface of the top plate, and both ends of the connecting rod are attached. pivotally connected to the sliding member and the lower surface of the top plate with a shaft in the same direction as the support shaft;
A pinion that engages easily with the sliding member is pivoted to the upper surface side of the base frame or base on which the sliding member is provided, or to the lower surface side of the top plate so as to be movable in the direction of its tooth groove. Also, a rotation stopper that engages with the pinion and prevents its rotation is provided adjacent to the pinion, and when the pinion is engaged with and disengaged from the stopper, rotation is imparted to the pinion when the pinion is disengaged. The present invention is characterized in that an operating shaft is connected to the shaft of the pinion.

Next, an embodiment of the present invention will be described with reference to the drawings.

Reference numeral 1 denotes a base frame of the desk; 2 is a support plate installed on both sides of the base frame 1 in the width direction at approximately the center in the front-rear direction; and 3 is a support plate installed in the width direction of the base frame 1 via a receiving plate 4 on the support plate 2; A desk top plate 5 is fixed to the base frame 1 by a shaft 4a along the base frame 1, and is swingable in the front and rear directions of the base frame 1. The member 5 is a sliding member, and a guide pin 6 fixed to and erected on the base frame 1 is loosely fitted into a guide groove 5a formed in the longitudinal direction of the member 5, so that the base frame 1
It is attached so that it can move only in the front and rear directions.
7 is a rack formed on the upper surface side of the sliding member 5;
Reference numeral 8 denotes a pinion that meshes with the rack 7, and the pinion 8 is an operating shaft 9 that is supported by bearings 9a and 9b that are erected in the width direction of the base frame 1 so as to be able to slide a certain amount in the longitudinal direction thereof. It is fixed to the tip of the rack 7 and meshes with the rack 7.

Reference numeral 10 denotes a rack-shaped rotation stopper which is fixedly installed on the rack 7 side of the bearing 9b and prevents rotation when engaged with the pinion 8. When the pinion 8 is in the position shown by the solid line in FIG. In the position shown by the dotted line in FIG. 1, the pinion 8 is rotated by the rotation of the operating shaft 9, and acts to move the sliding member 5 forward and backward. For this purpose, an operating knob 11 is provided at the outer end of the operating shaft 9, and the operating knob 11 is provided at the outer end of the operating shaft 9.
A compression spring is inserted between the pinion 8 and the bearing 9a, so that the pinion 8 is always placed in the position shown by the solid line in FIG. Therefore, in order to rotate the pinion 8, as shown in FIG. 1, the knob 11 can be rotated by pushing the knob 11 to the right, disengaging the pinion 8 from the rotation stopper 10, and rotating the knob 11.

In this embodiment, the sliding member 5 configured to slide back and forth by the rotation of the pinion 8 as described above has a shaft 1 between its tip and the lower surface of the top plate 3.
Connecting rod 12 pivotally connected by 2a and 12b
This structure allows the member 5 to move back and forth to the top plate 3, which is pivotally supported on the base frame 1 by the shaft 4a via the connecting rod 12.
It will be transmitted as a rocking motion, and therefore,
The angle of inclination of the top plate 3 in the front-rear direction can be changed freely.

In the above embodiment, the sliding member 5, the pinion 8 meshing with its rack 7, the operating shaft 9, and other members are provided on the top side of the base frame 1, but these members are all mounted on the top side. Even if it is provided on the lower surface side of the plate 3 and its sliding member 5 is connected to the base frame 1 side via the connecting rod 12, the longitudinal inclination angle of the top plate 3 can be freely changed.

Further, the operating shaft 9 of the pinion 8 may be provided on the right side of the base frame 1 or on both left and right sides of the base frame 1 in FIG. Further, since the sliding member 5 may be one in which the rack 7 is slid by the rotation of the pinion 8, the rack 7 itself is housed as a sliding member in a guide groove on the base frame (not shown). It can be anything.

The present invention is as described above, and the top plate supported on the base frame or the upper part of the base so as to be swingable back and forth is tilted by a tilting and fixing mechanism with a very simple structure, so that the angle can be fixed. Therefore, it is extremely useful as a support device for a tilted top plate.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the apparatus of the present invention, FIG. 2 is a sectional view taken along line A--A in FIG. 1, and FIG. 3 is a plan view of FIG. 2. 1... Base frame, 2... Support plate, 3... Top plate, 4...
...Brace plate, 5...Sliding member, 5a...Guide groove, 6...
...Guide pin, 7...Rack, 8...Pinion, 9
...Operation shaft, 10...Rotary stopper, 11...Knob, 12...Connection rod.

Claims (1)

[Scope of utility model registration request] A sliding member having a rack formed on its upper surface in a direction parallel to the front-to-rear direction of the top plate is attached to the upper surface of the base frame or base or the lower surface of the top plate so as to be movable only in the front-to-rear direction of the top plate, and a connecting rod having a length greater than the distance between the lower surface of the top plate and the upper surface of the base frame or base is placed between the sliding member and the lower surface of the top plate, and both ends of the connecting rod are pivotally attached to the sliding member and the lower surface of the top plate by an axis in the same direction as the support axis, while a pinion meshing with the rack of the sliding member is axially attached to the upper surface of the base frame or base or the lower surface of the top plate so as to be movable in the direction of its tooth groove,
a rotation stopper is provided adjacent to the pinion for engaging with the pinion to prevent rotation thereof; and
a pinion engaging means for engaging with said pinion when said pinion is disengaged from said stopper and for rotating said pinion when said stopper is disengaged from said stopper;