JP2002272549A - Drawer structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drawer mechanism for not making a shelf plate incline to the left and right to a pull-out direction at the time of pulling out the shelf plate even in the case of holding the left and right of the shelf plate by a slide mechanism provided with an intermediate. SOLUTION: The rod of an actuator 4 is projected and engaged with the intermediate 32a at the time of starting a pull-out operation. When the intermediate 32a is slid to a slide limit position to a guide rail 33a, the rod 41 is stored and engagement with the intermediate 32a is released.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a pair of vertical walls opposed to each other in the left-right direction, each of which has a left and right side portion held via a slide mechanism and which can be pulled out in the front-rear direction. Each slide mechanism includes a guide rail fixed to a wall surface, a mover that moves together with a shelf, and a middle element that is located between the guide rail and the mover and that is slidable with respect to both the guide rail and the mover. Related to a drawer structure composed of:

[0002]

2. Description of the Related Art For example, in the case of quantitative analysis of drugs, a large number of samples are arranged on a shelf plate in the order of sample numbers. If the number of samples is large, a plurality of shelves are used because they cannot be arranged on one shelf. When a plurality of shelves are used in this manner, space can be effectively used by stacking the shelves vertically at predetermined intervals, but it is difficult to take out samples, so it is desirable to be able to pull out the shelves. .

In order to pull out the shelf, it is necessary to hold the left and right ends of the shelf against a pair of vertical wall surfaces facing each other via a slide mechanism so that the shelf can be pulled out. desirable. The slide mechanism fixes a guide rail to a wall surface, and fixes a shelf to a mover slidably engaged with the guide race. However, in a slide mechanism including a guide rail and a mover, a slide range is narrow. Therefore, a slide mechanism provided with an intermediate member that is slidable with respect to both the guide rail and the mover may be used.

[0004]

In the slide mechanism having the above-described meson, when the shelf is pulled out, the meson can slide with respect to both the guide rail and the mover, so that the meson is not drawn until it is completely pulled out. There is no guarantee that the positions of the right and left slide mechanisms match. If the positions of the mesons of the left and right slide mechanisms are different, the shelf board tilts to the left or right with respect to the pull-out direction, and the shelf board cannot be pulled out smoothly. Especially when inspecting medicines automatically, the shelf is grasped with a robot arm and pulled out for automation, but unlike the case where the shelf is pulled out manually, it is possible to respond flexibly to the inclination of the shelf. It is not possible, and the shelf board may be broken.

In view of the above-mentioned problems, the present invention has been made in consideration of the above problems, and even when the left and right sides of a shelf are held by a slide mechanism provided with a meson, the shelf is moved left and right with respect to the pulling direction when the shelf is pulled out. It is an object to provide a drawer mechanism that does not tilt.

[0006]

In order to solve the above-mentioned problem, a drawer mechanism according to the present invention comprises a drawer mechanism which is opposed to a left-right direction.
It has a shelf plate that can be pulled out in the front-rear direction with left and right sides held via a slide mechanism with respect to a pair of vertical wall surfaces, and each slide mechanism, together with a guide rail fixed to the wall surface and a shelf plate In a drawer structure composed of a moving armature and a middle member located between the guide rail and the armature and slidable with respect to both the guide rail and the armature, a state in which a shelf board is located between both wall surfaces. When pulled out from the retracted state in one of the front and rear directions, the meson is connected to the mover, and the meson is slid with respect to the guide rail in conjunction with the movement of the mover, and immediately before the slide limit position of the meson with respect to the guide rail. In this case, the connection between the meson and the mover is released, and the mover can be slid with respect to the meson.

[0007] By connecting the meson to the mover when pulling out the shelf board, the meson slides with respect to the guide rail, and no sliding state occurs between the meson and the mover. When the meson slides to the limit with respect to the guide rail, the meson cannot slide further with respect to the guide rail, and thereafter, the mover slides with respect to the meson. In this way, the position of the meson until the shelf is pulled out is uniquely determined, and it is possible to prevent the positions of the right and left mesons from being different.

[0008] By the way, it is also possible to provide a holding portion to be held by the robot arm on the shelf, so that the shelf can be pulled out by the robot arm.

[0009] Further, for example, an actuator in which a rod can be freely inserted and removed is fixed so as to move together with the movable element,
The rod may be engaged with the meson with the rod protruding to connect the mover and the meson, and the rod may be retracted to release the connection between the mover and the meson.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1, reference numeral 1 denotes a rectangular shelf, on which a plurality of containers (not shown) containing powder samples to be quantitatively analyzed are regularly placed. . The shelf 1
Is a slide mechanism 3 on a frame plate 2 which is a pair of right and left vertical walls.
Attached through. The slide mechanism 3 holds the shelf 1 slidably in the front-rear direction. At the center of the front end of the shelf 1, a grip 1 is provided vertically from the upper surface of the shelf 1.
2 are erected. When a powder sample is automatically analyzed, the gripper 12 is gripped by the robot arm RH, the shelf 1 is pulled out forward, and containers on the shelf 1 are sequentially moved to the robot arm RH.
Take out and analyze. Dog 11 is on the upper surface of shelf 1
The sensors 21 and 22 for detecting the passage of the dog 11 are attached to the left frame plate 2 in FIG.

Referring to FIG. 2, the slide mechanism 3 includes a frame plate 2
Guide rail 33a, which is screwed and fixed to the shaft, a middle piece 32a slidably engaged with the guide rail 33a via a row of balls 34, and a slidable manner via the same ball row 34 with the middle piece 32a. Is provided with a mover 31a that engages with the armature. And these movers 3
The same unit as the unit composed of 1a, the meson 32a and the guide rail 33a, and the unit composed of the mover 31b, the meson 32b and the guide rail 33b,
By connecting the movers 31a and 31b, both units are connected. Then, as shown in FIG. 3, a guide rail 33b is fixed to an end of the shelf 1.

However, the guide rail 3 fixed to the frame plate 2
3a has a pair of stopper pieces 36 cut and raised.
Although the intermediate element 32a and the movable element 31a are configured to abut on the stopper pieces 36 and do not move rearward,
The guide rail 33b fixed to the first and second ends is not provided with a stopper strip 36 at both ends.

Reference numeral 4 denotes an actuator formed on the shelf 1, and the rod 41 moves forward and backward by air pressure. When air pressure is applied, as shown in FIG.
2a. When the pneumatic pressure is released, the rod 41 is retracted by the biasing force of the built-in spring until the rod 41 is not engaged with the intermediate member 32a. However, rod 4
Even when 1 is retracted, the rod 41 is engaged with the mover 31a.

Further, as shown in FIG. 4, a lever 5 swingable about a fulcrum 52 is attached to the lower surface of the shelf 1. The distal end of the lever 5 is bent in an L-shape as shown in the figure, and the bent distal end portion 51 is moved in a normal state to the movable element 31.
b. Therefore, even if the user attempts to pull out the shelf 1 backward, the movable element 31a and the
The movable element 31b and the meson 3
2b is restricted by the tip 51 and cannot slide. Therefore, the shelf 1 cannot be pulled out backward. In FIG. 4, the actuator 4 is omitted.

Here, when the lever 5 is rotated clockwise in the figure, and the distal end portion 51 of the lever 5 is retracted to a position where it does not engage with the mover 31b and the intermediate member 32b as shown in FIG. Mover 3 when pulling out
Sliding of 1b and meson 32b is allowed. Therefore, as shown in FIG. 6, the meson 32b is connected to the guide rail 33b.
, And the mover 31b is
, And the shelf 1 can be pulled out substantially rearward. Even if the robot arm RH is positioned in front of the shelf 1, the shelf 1 can be pulled out in this manner, so that a container containing a sample is set on the shelf 1 or replaced with a new container. Can do the work. When such an operation is completed, the shelf 1 is pushed back to the original position, and the lever 5 is returned to the state shown in FIG.

Referring to FIG. 7, next, the robot arm R
When pulling the shelf board 1 forward with H, the robot arm RH grips the gripper 12 and pulls it forward. At this time, since the rod 41 of the actuator 4 protrudes, the middle piece 32a is attached to the tip of the rod 41. And the intermediate piece 32a is pushed by the rod 41 and slides with respect to the guide rail 33a. On the other hand, since the mover 31a is also pushed by the rod 41, it moves together with the meson 32a, so that no sliding state occurs between the meson 32a and the mover 31a.

When the meson 32a slides to the slide limit position with respect to the guide rail 33a, the dog 11 passes below the sensor 22 immediately before reaching the slide limit position, and it is detected that the meson 32a has slid to the slide limit position. Is done. Then, the pneumatic pressure acting on the actuator 4 is released, and the rod 41 retracts. Then, as shown in FIG. 8, the mover 31a is
To be able to slide. And then shelf 1
Is pulled out forward, as shown in FIG. 9, the shelf 1 is pulled out largely forward.

When the automatic analysis of the sample on the shelf 1 is completed using the robot arm RH, the robot arm RH
When the shelf 1 is returned to the original position, the dog 11 is detected by the sensor 21.
Pass below. When it is detected from the detection signal from the sensor 21 that the shelf board 1 has returned to the original position, the actuator 4 is caused to act on the pneumatic pressure to cause the rod 41 to protrude again. 7 to 9 showing the state in which the shelf board 1 is pulled out forward, since the slide of the intermediate element 32b and the movable element 31b is regulated by the rod 41, the movable elements 31b and the intermediate element 32b -The description of the slide rail 33b was omitted.

[0019]

As is apparent from the above description, the present invention is applied to a case in which a shelf mechanism in which the left and right ends are slidably held by a slide mechanism having a meson is pulled out by grasping it with, for example, a robot arm. Is not different between the left and right slide mechanisms, so that the shelf board is not caught in the middle of being pulled out.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a detailed structure of a slide mechanism.

FIG. 3 is a diagram showing a relationship between a slide mechanism and an actuator.

FIG. 4 is a diagram showing a state before a shelf board is pulled out rearward.

FIG. 5 is a diagram showing a state in which a shelf board can be pulled out rearward.

FIG. 6 is a view showing a state where a shelf board is completely pulled out rearward.

FIG. 7 is a diagram showing a state before a shelf board is pulled out forward;

FIG. 8 is a diagram showing a state in which the shelf board has been pulled out halfway forward;

FIG. 9 is a view showing a state in which the drawer is completely pulled out to the front;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Shelf board 2 Frame board 3 Slide mechanism 4 Actuator 5 Lever 11 Dog 21 Sensor 22 Sensor 31a Mover 32a Intermediate 33a Guide rail

Claims (3)

[Claims] 1. A pair of vertical walls opposed to each other in the left-right direction, each of which has a shelf plate that can be pulled out in the front-rear direction and that is held on both left and right sides via a slide mechanism. The drawer structure is composed of a guide rail fixed to the shelf, a mover that moves together with the shelf, and a middle element located between the guide rail and the mover and slidable with respect to both the guide rail and the mover. When the shelf is pulled out in the front-rear direction from the storage state in which the shelf is located between the two wall surfaces, the meson is connected to the mover, and the meson is slid with respect to the guide rail in conjunction with the movement of the mover. A drawer, wherein the connection between the meson and the mover is released just before the slide limit position of the meson with respect to the guide rail, so that the mover can slide with respect to the meson. Structure. 2. The drawer structure according to claim 1, wherein a grip portion for holding the robot arm is provided on the shelf plate so that the shelf plate can be pulled out by the robot arm. 3. An actuator in which a rod can be freely moved in and out is fixed so as to move together with the movable element. When the rod is extended, the rod is engaged with the intermediate element to connect the movable element and the intermediate element, and the rod is retracted. The drawer mechanism according to claim 1 or 2, wherein the connection between the mover and the meson is released by the mover.