JPS6136243Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a horizontal movement device in which a movable platform on which an object to be moved horizontally is mounted is moved in a horizontal direction by a gear mechanism consisting of a rack and a pinion. Horizontal movement that allows smooth operation with low squeaks even when a large load is applied to the movable base, less wear on the gear mechanism, and accurate movement of the movable base by preventing horizontal rotation. The goal is to provide equipment.

Conventional horizontal movement devices of this type, for example, eye examination machines that move an eye camera in the horizontal direction,
Since the weight of the camera is approximately 30 kg, the material of the pinion and rack that support the entire weight must be made of metal to avoid deformation due to large loads being applied to the same point for a long time. limited, and
The gear mechanism has a spiral shape in order to synchronously rotate both pinions fixed to both ends of a rotating shaft to which a movable base is attached. As a result, it produced an unpleasant creaking sound, and the gear mechanism was subject to the full load, resulting in severe wear and a short lifespan.

The present invention aims to overcome the above-mentioned drawbacks of the conventional art, and will now be described in detail with reference to the drawings showing one embodiment thereof.

The structure of the present invention is that pinions 4 and 5 of the same diameter made of Juracon resin are attached to both ends of a rotary shaft 3 which is rotatably inserted into the rear of a movable base 2 which has a rotatable caster 1 attached to the lower front surface. Along with fixing,
Bearings 8, 9 are provided with metal discs 6, 7 of the same diameter, which are larger than the pinions 4, 5, at positions close to each other inside both pinions 4, 5 of the rotating shaft 3.
On the other hand, a pair of racks 10 and 11 having a thickness approximately corresponding to the difference in radius between the discs 6 and 7 and the pinions 4 and 5 are mounted on the base 12 in parallel in the front-rear direction. The gist is that both pinions 4 and 5 are meshed with both racks 10 and 11, respectively. In addition, 13 in the figure is a screw for fixing the movable table 2 to the rotating shaft 3, and 14 is a rack 1.
Mounting brackets 0 and 11, 15 a recess cut into the base 12 and on which the caster 1 is placed, 16 an operation handle for moving the movable base 2, and 17 erected at the rear of the movable base 2. The push-up table is movable up and down by a support rod 18; 19 is a helical rod whose upper end is fixed to the end of the push-up table 17 for operating the push-up table 17; A rotating body 21 for operating the push-up table 17 placed on the upper surface is an object for transporting, for example, a camera in an eye examination machine, which is attached to the upper end of the support rod 18.

When using the horizontal movement device of the present invention configured as described above, by grasping the operating handle 16 and pulling it left and right, the movable base 2 slides on the rotating shaft 3 and moves in the left and right directions, and is also subjected to force in the front and rear directions. By pressing, the pinions 4 and 5 and the discs 6 and 7 rotate, respectively, and the movable base 2 moves in the front and back direction. That is, it can be moved in any horizontal direction. and,
In the above device, all the loads due to the object 21 and the movable table 2 are received by the metal discs 6 and 7, so the pinions 4 and 5 only function to synchronize the left and right sides. Therefore, pinion 4,
5 and the racks 10, 11 are made of synthetic resin, and even if they are in a back-crushed form, there will be no inconveniences such as severe wear or deformation, and the discs 6, 7 that receive the load will rotate smoothly due to the bearings 8, 9. As mentioned above, the gear mechanism is made of synthetic resin and has a backlash type, so the noise is extremely low and it operates smoothly. Furthermore, since the discs 6 and 7 are provided close to the pinions 10 and 11, there is an advantage that the pinions 4 and 5 can be prevented from falling off from the racks 10 and 11.

As described above, the horizontal movement device of the present invention has the remarkable effect of significantly reducing noise and wear and allowing extremely smooth operation.

[Brief explanation of drawings]

The drawings show one embodiment of the horizontal movement device of the present invention, with FIG. 1 being a front view and FIG. 2 being a right side view. 2... Movable base, 3... Rotating shaft, 4, 5... Pinion, 6, 7... Disc, 10, 11... Rack,
12... Base.

Claims (1)

[Scope of utility model registration request] At both ends of the rotating shaft, which is rotatably passed through the movable base,
A pair of synchronizing pinions made of synthetic resin are fixed to each other, and metal load-receiving disks with a larger diameter than the pinions are rotatably mounted close to the pinions, and are arranged parallel to the base. A horizontal moving device comprising: both pinions meshing with the racks thereof, and both disks placed on a base.