JPH07304455A - Hand cart - Google Patents

Abstract

(57) [Abstract] [Purpose] Conveying articles while keeping conveyed articles clean. A cover 26 having a loading / unloading opening 27 for covering the loading platform 22, and an opening / closing member 30 for opening / closing the loading / unloading opening 27,
It has a clean fan unit 33 that cleanly holds the inside of the cover 26.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a hand truck.

[0002]

Disadvantages of the prior art The conventional hand cart has the advantage that it is simple and inexpensive as a means for transporting articles, but it is precise, sophisticated, and clean, that is, it is protected from dust and dust. However, there is a drawback that it is not suitable for transporting products that must be transported while transporting.

[0003]

[Means for Solving the Disadvantages] The present invention employs the following means in order to eliminate the above disadvantages. The present invention is
It has a cover having a loading / unloading port for covering the loading platform, an opening / closing member for opening / closing the loading / unloading port, and a clean fan unit for keeping the inside of the cover clean.

[0004]

The present invention has the following functions. The conveyed article can be conveyed while being kept clean.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments with reference to the drawings. In this specification, the front means the right side in FIG. 1, the rear means the left side in the figure, the left means the back side in FIG. 1, and the right means the front side.

A push handle 5 is provided at the rear of the body 2 of the push cart 1. A required number of turning casters 6 are provided below the vehicle body 2.

In the hollow body body 2 of the hand cart 1, an elevating table 8 is provided to be movable up and down by a known elevating device 9. The elevating device 9 is a known elevating mechanism 10 having a pair of X-shaped link mechanisms whose intersections are pivotally attached.
And a hydraulic unit 11 having a built-in cylinder or the like for operating the lifting mechanism 10, an operating pedal 12 for operating the hydraulic unit 11, and a lifting rod 13 for the same.
The lifting table 8 is raised by pushing down the operation pedal 12, and the lifting table 8 is pulled up by pushing up the lifting rod 13.
Slowly descends.

A well-known slide type article transfer device 17 is provided on the elevating table 8 via a required support column 16.
As is well known, the slide-type article transfer device 17 includes a base fixed to the column 16, a middle slidably mounted on the base, and a slide fork slidably mounted on the middle. 18 (top), a middle actuating device, and an interlocking mechanism that slides the slide fork 18 in the same direction as the middle in conjunction with the movement of the middle. The slide fork 18 slides back and forth by rotating the rotary handle 20 for the middle actuator, which projects rearward of the vehicle body 2. Since the rotary handle 20 is mounted on the lift table 8 and moves up and down as the lift table 8 moves up and down, a long hole is formed in the vehicle body 2 so as to allow the lift handle 8 to move up and down. (Not shown) is formed. The slide fork 18 is capable of protruding above the upper wall 3 through an opening 4 formed in the upper wall 3. As is well known, the slide fork 18 performs an operation of lifting, projecting, and lowering an article W on a support block 24, which will be described later, to make the article W a unloading station having a space for allowing the fork to move up and down. You can take it down,
On the other hand, the article W can be placed on the support block 24 by the operation reverse to the above.

A loading platform 22 is provided on the upper wall 3 of the vehicle body 2. The loading platform 22 has four columns 23 erected on the upper wall 3 and a support block 24 provided at the upper ends of the columns 23 so as not to collide with or interfere with the slide fork 18. There is. The four corners of the article W are supported by the four support blocks 24.

A cover 2 made of a transparent material for covering the cargo bed 22.
6 is provided on the upper wall 3. The cover 26 has an inlet / outlet opening 27 in the front part and an opening 28 in the rear part whose upper edge is lower than the eye level of the worker M. The inlet / outlet 27 is openable / closable by a cover opening / closing member 30 made of a transparent body, which is provided on the cover 26 by a pivot 29 having an axis centered in the left / right direction so as to be movable in a circular arc. The opening / closing member 30 is provided with a handle 31 (an operation unit in the claims), and the handle 31 has a hand of the worker M on the side of the push handle 5 when the opening / closing member 30 is bound. It is provided within reach. In addition,
Since the opening / closing member 30 is opened by swinging to the rear side, the handle 31 is opened when the opening / closing member 30 is opened.
Comes closer to the worker M on the side of the push handle 5. A packing (not shown) is provided on the cover 26 or the opening / closing member 30 to prevent air from leaking between the cover 26 and the opening / closing member 30 when the opening / closing member 30 is closed. . In addition, push handle 5
Needless to say, is designed not to interfere with the opening / closing operation of the opening / closing member 30.

A clean fan unit 33 is fitted in an airtight state in the opening 28 whose upper edge is lower than the eye level of the worker M. The clean fan unit 33 includes a fan 34 for sending air into the cover 26,
And a filter 35 for cleaning the air sent into the cover 26 by the fan 34.

[0012]

[Modifications, etc.] Modifications will be described below. (1) The lifting device 9 may be a fluid pressure cylinder or the like. (2) The slide fork 18 may be operated not by the rotating handle 20 but by a motor that can rotate in the forward and reverse directions. (3) The column 23 may be provided on the upper wall 3 via a shock absorber. (4) The opening / closing member 30 may be a door horizontally swinging and opening / closing by a motor, or a shutter-like member of an automobile garage that is wound and rewound by the motor. In those cases, an operation button for operating the motor is provided on the rear portion of the vehicle body 2. (5) Instead of the slide fork 18, an article transfer robot may be used as the article transfer device.

[0013]

The present invention has the following effects due to the above-described structure. According to the invention of claim 1, the conveyed article can be conveyed while being kept clean. According to the second aspect of the present invention, since the operation of the article transfer device and the opening / closing operation of the opening / closing member can be performed on the side of the hand grip, the worker can efficiently transfer the articles without making unnecessary movements. You can do it. According to the invention of claim 3, since the front field of view is not obstructed, it is possible to safely run the hand cart, and the movement of the article on the side of the hand grip is also visible when the article is transferred. Can be monitored with.

[Brief description of drawings]

FIG. 1 is a side view of partially crushed according to an embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along line II-II of FIG.

FIG. 3 is an enlarged sectional view taken along line III-III of FIG.

[Explanation of symbols]

 1 Hand cart 22 Loading platform 26 Cover 27 In / out port 28 Opening 30 Opening / closing member 33 Clean fan unit

Claims (3)

[Claims] 1. A hand truck having a cover having a loading / unloading opening for covering the loading platform, an opening / closing member for opening / closing the loading / unloading opening, and a clean fan unit for keeping the inside of the cover clean. 2. An article transfer device is provided on the loading platform, and an operation part of the article transfer device and an operation part for opening / closing the opening / closing member are provided within a reach of a worker who is on the side of the hand grip. The hand cart according to claim 1. 3. The hand cart according to claim 1, wherein the cover and the opening / closing member are made of a transparent material, and the height of the clean fan unit is lower than the eye level of the worker.