JPH04262595A - Auxiliary unit drawing mechanism for console - Google Patents

Abstract

PURPOSE:To provide a light operation by so selecting diameters, etc., of large- diameter and small-diameter sprockets that a moment of a divisional force of a gravity to be applied to a unit in a moving direction, around the large- diameter sprocket and a moment of a pressing force of a gas spring around the small-diameter sprocket are reverse to each other. CONSTITUTION:A pair of shafts 6 to which a large-sized sprocket 4 and a small-diameter sprocket 5 are coaxially secured, are disposed under a unit 2 in a console 1. A divisional force f of a moving direction of a gravity to be applied to the unit 2 is applied to a chain 7 through a bracket 9, and a moment around the sprocket 4 is operated at the shaft 6. A pressing force P of a pressing rod 10a due to gas pressure in a gas spring 10 is applied to a chain 8, and a moment around the sprocket 5 is operated at the shaft 6. The diameters of the sprockets 4, 6 and the pressing force of the spring 10 are so selected that both the reverse moments become equal.

Description

[Detailed description of the invention]

[Purpose of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a console used in a control device or the like.

0002

[Prior Art] Units such as CRTs installed on consoles are generally installed with an upward slope to the front for ergonomic reasons.For maintenance and inspection purposes, slide rails on both sides of the unit allow it to be moved from its storage position. It is often possible to withdraw.

In the case of the prior art, the handle provided at the front end of the unit is grasped and pulled out to carry out the storage operation.
When starting the operation to store the unit, it is necessary to remove the stopper, and at this time, the handle is supported with one hand to hold the unit, so excessive gravity is placed on one hand.
The situation was unstable. In this condition, there was always a risk of damaging the unit and console if your hand slipped from the handle.

0004

SUMMARY OF THE INVENTION It is an object of the present invention to overcome the drawbacks of the prior art described above and to realize a console unit pull-out assist mechanism that allows units to be pulled out and stored with safe and easy operation.

[Configuration of the invention]

[0006]

[Means for Solving the Problems] The console unit pull-out assisting mechanism of the present invention has a pair of shafts on which a large-diameter sprocket and a small-diameter sprocket are coaxially fixed, so that the outer diameter of the large-diameter sprocket is set at a distance from which the unit is pulled out. Each shaft is rotatably supported on the console so that the shafts are parallel to each other and connected in a direction perpendicular to the axis of each shaft and are parallel to the moving direction of the unit, and are spaced apart by a distance of about The rear end of the unit located at The tip of the extrusion rod of a gas spring fixed to the console is connected to the middle part of the chain that connects the lower end of the sprocket with the extrusion rod pointing toward the small-diameter sprocket on the rear side.

[0007]

[Operation] In the console unit pull-out assist mechanism of the present invention, the moment around the large diameter sprocket due to the component of gravity in the moving direction applied to the unit and the moment around the small diameter sprocket due to the extrusion force of the gas spring are mutually Since the directions are opposite, by selecting the diameters of the large and small sprockets and the extrusion force of the gas spring, both moments can be made equal, and the unit is in a balanced state and can be moved with a light force. It can also be stopped at any point within the range of movement.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained in detail below based on embodiments shown in the drawings.

FIG. 1 shows a console unit pull-out assist mechanism according to one embodiment of the present invention. C on the top of console 1
A unit 2 such as an RT is stored tilting upward in the front, and can be pulled out by slide rails 3 provided on both sides of the unit 2. A handle 2a for loading and unloading the unit 2 is attached to the front surface of the unit 2.

Inside the console 1, a pair of shafts 6 to which a large-diameter sprocket 4 and a small-diameter sprocket 5 are coaxially fixed are spaced apart by the distance by which the unit 2 is pulled out plus the outside diameter of the large-diameter sprocket 4. The shafts 6 are arranged below the unit 2 so that the straight line connecting the axis of each shaft 6 perpendicularly to the shaft is parallel to the moving direction of the unit 2, and each shaft 6 is connected to a structural member of the console 1 ( (not shown) is rotatably supported. Chains 7 and 8 are stretched between the pair of large-diameter sprockets 4 and between the pair of small-diameter sprockets 5, respectively.

When the unit 2 is housed, a bracket 9 for connecting the rear end of the unit 2 to a portion of the chain 7 located near the upper end of the large-diameter sprocket 4 on the rear side is attached to the unit 2. This bracket 9
The tip of the chain 7 is connected to the chain 7. In addition, in the middle part of the chain 8 that connects the lower end of the sprocket of the chain 8 that is stretched between the pair of small diameter sprockets 5,
The push rod 10a is oriented so that the pushing force of the push rod 10a applies force to the chain 8 connecting the lower end of the sprocket toward the small diameter sprocket 5 on the rear side, and its fixed end is fixed to a structural member (not shown) of the console 1. The distal ends of the push rods 10a of the gas springs 10 are connected to each other.

The large-diameter sprocket 4, small-diameter sprocket 5, shaft 6, chains 7, 8, bracket 9, and gas spring 10 constitute a unit pull-out assist mechanism. This unit pull-out assist mechanism is provided on both the left and right sides of the unit 2.

In the console unit pull-out assist mechanism of the embodiment of the present invention constructed as described above, the component force F of the gravity applied to the unit 2 in the moving direction is applied to the chain 7 via the bracket 9, and the large diameter sprocket A moment of four rotations in the clockwise direction in the drawing acts on the shaft 6. Also,
The pushing force P of the pushing rod 10a due to the gas pressure inside the gas spring 10 is applied to the chain 8, and the moment in the counterclockwise direction in the figure around the small diameter bracket 5 is applied to the shaft 6.
It acts on Therefore, by selecting the diameter of the large-diameter sprocket 4, the diameter of the small-diameter sprocket 5, and the pushing force of the gas spring 10 so that the two moments, which are opposite to each other, are equal, the unit 2 can be brought into a balanced state. . Thereby, the unit 2 can be moved easily with a small amount of force, and can be stopped at any desired location even if the user releases the handle 2a. Also, due to the ratio of the diameters of the large-diameter sprocket 4 and the small-diameter sprocket 5, the operating distance of the unit 2 is large and the operating distance of the gas spring 10 is small. This results in a mechanism that is well suited to the performance of a small stroke, and is convenient for practical use.

[0014] By equipping the console with the console unit pull-out assisting mechanism of the embodiment of the present invention, when a unit stored in an upwardly tilted manner is pulled out or stored using an inclined slide rail, it can be moved extremely easily. Even if you accidentally release your hand from the handle, the unit will not fall at a high speed to the storage position, and damage to the unit and console can be prevented.

In the embodiment shown in FIG. 1, the unit pull-out auxiliary mechanisms are provided on both the left and right sides of the unit 2, but the same effect can also be obtained by providing one set below the center of the unit 2 in the width direction. It will be done. Further, the same effect can be obtained even if the unit pull-out assisting mechanism is placed horizontally (with the shaft 6 vertically) and provided below or above the unit 2. Additionally, non-slip belts, ropes and pulleys may be used instead of chains and sprockets.

[0016]

Effects of the Invention As detailed above, according to the present invention, a pair of shafts having large and small diameter sprockets coaxially fixed to each other is connected to a chain extending between each of the large and small diameter sprockets. Each shaft is rotatably supported in the console so that it is parallel to the moving direction of the unit, which has an upward slope, and with a distance between the shafts equal to the unit's moving distance plus the diameter of the large diameter sprocket. , the chain stretched around the large-diameter sprocket and the unit are connected via a bracket so that the moment around the large-diameter sprocket based on the gravity applied to the unit acts on the shaft, and the gas spring fixed to the console The extrusion rod of the gas spring is connected to the chain so that the extrusion force applies a moment around the small diameter sprocket in the opposite direction to the above moment to the shaft through the chain that spans the small diameter sprocket, and the diameter of the large and small sprockets, the gas By selecting the extrusion force of the spring, we have created a console unit pull-out assist mechanism that equalizes both moments applied to the shaft in opposite directions, so the unit is in a balanced state and can be easily moved with a small amount of force. Even if you take your hand off the handle when pulling out or storing the unit, the unit will not fall to the storage position, preventing damage to the unit and console.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view showing a unit pull-out assist mechanism of a console according to an embodiment of the present invention.

[Explanation of symbols]

1...Console 2...Unit 3...Slide rail 4...Large diameter sprocket 5...Small diameter sprocket 6...Axis 7...Chain 8...Chain 10...Gas spring 10a...Extrusion rod

Claims (1)

[Claims] Claim 1: In a console in which a unit such as a CRT is housed in the upper part of the console tilting forward and upward and can be pulled out by slide rails on both sides of the unit, a pair of large-diameter and small-diameter sprockets are coaxially fixed. The shaft is connected to a chain extending between large-diameter sprockets and between small-diameter sprockets, parallel to the direction of movement of the unit, and with a distance between the shafts approximately equal to the movement distance of the unit plus the diameter of the large-diameter sprocket. Each shaft is rotatably supported in the console, and the rear end of the unit in the stored state is connected to a portion near the upper end of the rear sprocket of the chain connecting the upper end of the large diameter sprocket via a bracket. , a push rod of a gas spring fixed to the console is connected to a midway portion of the chain connecting the lower end of the small diameter sprocket, with the push rod directed toward the small diameter sprocket on the rear side;
The diameters of the large-diameter and small-diameter sprockets are adjusted so that the moment around the large-diameter sprocket based on the gravity applied to the unit is equal to the moment in the opposite direction around the small-diameter sprocket based on the pushing force of the gas spring.
A console unit pull-out assist mechanism featuring the push-out force of a gas spring.