RU68254U1 - UMBRELLA WINCH - Google Patents

Abstract

OBJECT: umbrella winch. FIELD OF APPLICATION: can be used to open and / or close a large umbrella, for example, garden, beach, for a cafe, which is used for personal or group protection from rain or sun. ESSENCE: the shaft for winding a rope, chain or belt is connected to the handle through a self-governing non-returnable roller coupling. TECHNICAL RESULT: the rotation movement in any direction from the shaft to the handle is not transmitted. By opening and / or closing the umbrella, by the force of the tent tension, by fixing the tent tension, it is possible to control the rotation in any direction with only one handle. In this case, the handle remains in the position in which it was left by the user's hand. The removable handle can be easily removed from the fork or reinserted into it. Fig. 3.

Description

The device relates to the field of umbrellas and can be used to open and / or close a large umbrella, for example, a garden, beach, for a cafe, which is used for personal or group protection from rain or sun.

A well-known umbrella winch (see UNFOLDING HOISTER OF A SUNSHADE. Patent US 20020139404A1 Int. Cl. A45B 11/00. U.S. Cl. 135 / 20.3) containing a shaft, a handle for rotating the shaft.

In the well-known umbrella winch, one of the ends of the shaft for winding the traction rope is directly connected to the handle for rotating the shaft.

In the process of winding the traction rope onto the winch shaft, spontaneous transmission of rotation from the shaft to the handle is possible when removing the force on the handle, which does not allow the handle to fix the shaft position directly. This does not allow to fix the open tent of the umbrella in a tense state by using only force on the handle.

In addition, when closing the umbrella, if you do not remove the handle from the end of the shaft, then the handle spontaneously rotates with it, which is dangerous for the user of the umbrella.

The improvement is based on the task, an umbrella winch containing a shaft, a handle for rotating the shaft, according to the improvement, characterized in that the shaft is connected to the handle through a self-regulating irrevocable roller clutch.

TECHNICAL RESULT: the rotation movement in any direction from the shaft to the handle is not transmitted. Discovery and / or

closing the umbrella, the force of the tent tension, fixing the tent tension, it is possible to control the rotation in any direction with only one handle. In this case, the handle remains in the position in which it was left by the user's hand. The removable handle can be easily removed from the fork or reinserted into it.

The self-regulating non-returnable roller coupling is made in the form of an asterisk connected to the shaft end, mounted to rotate together with the shaft inside the stationary ring sleeve, the sprocket is installed between two diametrically opposite protrusions in the form of a driven fork on the shaft end, diametrically opposite between the ledge protrusions of the sprocket with the sleeve form a pair of oppositely oriented wedge grooves that taper from the protrusions of the driven fork, where inside the annular sleeve in each of the wedges of the grooves is placed on the roller, a driving fork is placed between the rollers, with the ability to transmit the movement of rotation through the rollers to either side of the driven fork along with the shaft and sprocket using the handle.

The rotation movement in any direction is transmitted only from the handle to the fork, from the fork through the rollers to the sprocket protrusions to the shaft.

The rotation movement from the shaft through the sprocket to the fork and handle is not transmitted.

A pair of diametrically opposite rollers, self-jamming in the wedge grooves of the fixed sleeve, impedes the transmission of movement from the shaft to the fork.

Other goals, features, advantages and possibilities of using the device are visible from the following description of exemplary embodiments based on the figures. Moreover, all described and / or graphically presented features in themselves or in any reasonable combination are subject to improvement, regardless of general requirements or feedback.

Figure 1. Winch umbrella. General form. Trimetry

Figure 2. Winch umbrella. Left view.

Figure 3. Winch umbrella. Section AA in figure 2.

The list of symbols in the drawings.

1. shaft;

2. removable handle;

3. asterisk;

4. sleeve;

5. driven plug;

6. wedge groove;

7. roller;

8. drive fork;

9. rope, chain or belt.

The device is shown in figures 1-3.

The umbrella winch comprises a shaft 1, a removable handle 2 for rotating the shaft. The shaft 1 is connected to the handle through a self-driving non-returnable roller coupling.

Self-locking non-returnable roller coupling is made in the form of an asterisk 3 connected to the end of the shaft 1. The asterisk 3 is mounted for rotation together with the shaft 1 inside the fixed ring sleeve 4. The sprocket 3 is mounted between two diametrically opposite protrusions in the form of a driven fork 5 on the end of the shaft 1. Diametrically opposite between the protrusions of the driven fork 5, the sprocket 3 together with the sleeve 4 forms a pair of oppositely oriented wedge grooves 6, which taper from the protrusions of the driven fork 5. Inside the ring sleeve 4, in each of the wedge grooves 6 there is a roller 7. Between adjacent pairs of rollers 7 there is a drive fork 8. The drive fork 8 is able to connect with a removable handle 2. The sleeve 4 of the coupling is fixedly mounted in the umbrella post.

Shaft 1 is intended for winding a rope, chain or belt 9 on it.

Asterisk 3 is made in the form of an insert from a single tetrahedral prism or a sequential set of inserts, according to

at least two tetrahedral prisms.

Asterisk 3, sleeve 4, four rollers 7 are made of carbide metal.

The device operates as follows.

The rotation movement in any direction is transmitted only from the handle 2 to the driving fork 8, from the fork 8 through two diametrically opposite rollers 7 to the protrusions of the driven fork 5 together with an asterisk 3 to the shaft 1, on which the rope or belt 9 can be wound or unwound.

The rotation movement from the shaft 1 through the driven fork 5 with an asterisk 3 to the driving fork 8 and the handle 2 is not transmitted. In the absence of torque on the driven fork 8, the driven fork 5 of the shaft 1 always stands on the brake.

The transmission of motion from the shaft 1 to the driving fork 8 is prevented by a pair of rollers 7 self-jamming in the wedge grooves 6 of the sleeve 4 of the coupling.

By opening and / or closing the umbrella, by the force of the tent tension, by fixing the tent tension, it is possible to control the rotation in any direction with only one handle. In this case, the handle remains in the position in which it was left by the user's hand. The removable handle can be safely left in the umbrella stand or removed from the plug or reinserted into it if it is removable.

Claims (2)

1. The winch of the umbrella containing the shaft, a handle for rotating the shaft, characterized in that the shaft is connected to the handle through a self-governing non-returnable roller coupling. 2. The device according to claim 1, characterized in that the self-driving non-returnable roller coupling is made in the form of an asterisk connected to the shaft end, mounted to rotate together with the shaft inside the stationary ring sleeve, the sprocket is installed between two diametrically opposite protrusions in the form of a driven fork at the end shaft, diametrically opposite between the ledges of the driven fork, the sprocket together with the sleeve form a pair of oppositely oriented wedge grooves that taper from the ledges of the driven fork, where utri annular sleeve in each of the V-grooves taken by the roller, between adjacent pairs of rollers arranged leading plug having the ability to transmit rotational movement through videos in any direction of the driven fork with the shaft and the sprocket with the handle.