JPH0448946Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a suction cup used for transporting plate glass, etc.

[Conventional technology]

A suction cup used for transporting plate glass has a circular suction plate attached to one side of the suction cup body, and the tip of a shaft that passes through the suction cup body is connected to the suction plate.
A cam lever is pivotally fixed to the tip of a shaft body projecting to the outside of the suction cup body, and the suction plate is pulled into the inside of the suction cup body by swinging the cam lever.

Conventionally, the cam lever in the above-mentioned suction cup has a cam edge formed on the outer periphery of the end on the pivot side with respect to the shaft body, and when the cam lever is swung, the cam edge slides against the receiving surface provided on the suction cup body side. The suction plate is pulled into the suction cup body while moving the suction cup.

By the way, since the suction plate is made of a thick rubber plate, a strong force is required to pull it in for vacuum suction, and the cam lever has a structure in which the cam edge slides against the receiving surface. In this case, the resistance during the swinging operation is large, and therefore, a large operating force in the pushing direction is required to operate the cam lever to vacuum-adsorb the suction plate.

[The problem that the idea aims to solve]

As mentioned above, when a large force is required to operate the cam lever to obtain vacuum suction of the suction plate, a large pushing force is applied to the glass plate when suctioning the suction cup to the plate glass. Since there are many conditions in which the glass plate is in a closed state, there is a problem in that the plate glass cracks due to the pushing force.

The purpose of this invention is to solve the above-mentioned problems by providing a suction cup that allows smooth vacuum suction of the suction plate using a cam lever with a small amount of force, and that does not cause cracks in the glass plate during suction operation. There is a particular thing.

[Means to solve the problem]

In order to solve the above problems, this invention has a structure in which a roller that acts on the receiving surface of the suction cup body is pivotally fixed to the cam edge of the cam lever.

[Effect]

When operating the cam lever to pull the suction plate into the vacuum suction side, the cam edge of the cam lever rolls against the receiving surface of the suction cup body, making the lever operation extremely light and reducing the pushing force of the suction cup against the glass plate. This can prevent the occurrence of cracks.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in the figure, the suction cup body 1 is made of metal material,
The suction cup body 1 is formed into a circular dish shape with one side open, and the suction cup body 1 is made of rubber or the like on the open side of the suction cup body 1.
A circular suction plate 2 formed with a larger diameter is stretched.

A screw tube 3 is screwed into the center of the suction cup body 1, and the tip of a shaft body 4 that passes through the screw tube 3 so as to be movable in the axial direction is connected to a circular hard plate 5 embedded in the suction plate 2. has been done.

The cam lever 6, which is pivotally fixed to the end of the shaft 4 protruding from the screw tube 3, has a forked tip that fits onto the shaft 4, and a shaft 8 that passes through the forked portions 7, 7. It is pivotally fixed to the end of the shaft body 4.

The cam lever 6 can swing freely around the shaft 8,
A cam edge 9 is formed from the tip to the side surface of the forked portions 7, 7, and rollers 11, 11 are inserted into the notches 10, 10 provided in both the forked portions 7, 7, and the shaft 12,
They are each pivoted at 12.

Rollers 11, 11 pivoted to both forked portions 7, 7
As shown in FIG. 4, it is attached so that a part of its outer periphery protrudes beyond the cam edge 9, and the end surface of the threaded cylinder 3 serves as a rolling bearing surface 13 for the rollers 11, 11.

Note that 14 is a handle attached to the suction cup body 1.

The suction cup of this invention has the above-mentioned structure, and when the cam lever 6 is in the upright position as shown in FIG. 3, the shaft 4 is not pulled in by the cam lever 6,
The suction plate 2 has a flat shape.

To suction the plate glass A, the cam lever 6 should be tilted clockwise as shown by the arrow B in FIG. 4 while the suction plate 2 is pressed against the plate glass A as shown in FIG. 1. Rollers 11, 11 protruding from the cam edge 9 roll on the receiving surface 13, and pull the shaft 4 out of the suction cup body 1 as indicated by arrow C in the figure.

When the shaft body 4 is pulled, the central part of the suction plate 2, which is crimped onto the glass plate A, is pulled into the inside of the suction cup body 1, and as shown in FIGS. 1 and 2, a vacuum is applied to the suction surface of the suction plate 2. A concave portion is formed, and the suction cup is fixed to the glass plate A by the suction force generated by the vacuum, making it possible to transport the glass plate A via the suction cup.

Moreover, when releasing the suction, the cam lever 6 may be pulled up to return the suction plate 2 to a flat state.

When operating the cam lever 6 as described above,
Since the roller 11 pivotally mounted on the cam edge 9 rotates against the receiving surface 13, the operating force of the cam lever 6 becomes lighter, and the force for pushing the glass plate A can be reduced by that much, thereby preventing the glass plate from breaking. Never.

〔effect〕

As described above, according to this invention, the roller is pivotally fixed to the cam lever that retracts the suction plate, and the roller rolls against the receiving surface when the suction plate is retracted, so that the operation of the cam lever is controlled by the roller. The weight becomes lighter due to the rolling motion of the glass plate, and the force with which the plate glass is pressed during suction becomes correspondingly smaller, thereby eliminating the possibility of the glass plate breaking during the suction operation.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway side view showing the suction cup according to the invention in its usage state, Fig. 2 is a longitudinal sectional front view enlarging the main parts of the same, and Fig. 3 is a longitudinal sectional front view showing the same in the suction release state. FIG. 4 is an enlarged sectional view of the cam lever portion. 1...Suction cup body, 2...Suction plate, 4...
Shaft body, 6... cam lever, 9... cam edge, 11...
... Laura, 13... Ukemen.

Claims (1)

[Scope of utility model registration request] A flexible circular suction plate is stretched on the concave side of the suction cup body, and the tip of the shaft that passes through the center of the suction cup body so as to be movable in the axial direction is connected to the suction plate. In a suction cup in which a cam lever is pivotally fixed to the end of a shaft body projecting to the outside, and the suction plate is pulled into the inside of the suction cup body through the shaft body by swinging operation of the cam lever, the suction cup body is attached to the cam edge of the cam lever. A suction cup characterized in that a roller acting on a receiving surface of the suction cup is pivotally fixed.