JPS6015911Y2 - Blind opening stop device - Google Patents

Description

[Detailed description of the invention] This invention is a blind used for the windows and doors of ordinary houses, and is characterized in that the blind can be raised, lowered, and stopped by pulling, rotating, and stopping an operating rope installed on a rotating wheel. This invention relates to an opening/stopping device.

In general, this type of blind that can be raised and lowered uses the restoring force of a spring built into the upper roll-up tube to adjust the rolling up and down operations as appropriate, and also has a stop mechanism installed at any position on the wind-up shaft. It is common to set

However, in this case, the resiliency of the spring is distorted, making it difficult to roll up and lower the blind, and the temporary stop mechanism of the blind is very complex, so it is easily damaged or worn out. The disadvantage is that the intended purpose cannot be achieved due to

This idea solves these conventional drawbacks,
Its main structure is that the winding cylinder that raises and lowers the blind has a winding shaft with a rectangular cross section protruding from one end, and the rotating wheel that connects the winding shaft is equipped with a chain or string. An operating rope such as a strip is installed, and an operating cylinder is installed in the center, and the end of the operating cylinder is rotatably fixed to a support shaft frame.

A cutting groove is formed in the longitudinal direction, and a bulge is formed at the other end.

A storage tube that houses this bulge is installed on a fixed frame, and inside the storage tube, a coiled strip having an engaging piece bent inward at both ends is wound around the outer periphery of the bulge. It is stored in good condition.

Further, each engaging piece of the winding strip comes into pressure contact with the upper end of the winding shaft, and also engages with a pressing protrusion provided on the bulge.

Therefore, with a very simple structure, winding up, winding down, and stopping can be done extremely easily and reliably.

An embodiment of this invention will be explained with reference to the drawings. The blind 1 is made of various constituent materials such as cloth and synthetic leather sheets. The upper end of the blind 1 is attached to a rolling cylinder 2, and Or stop it midway.

A winding shaft 3 having a rectangular cross section is provided at one end of the winding cylinder 2.
An operating cylinder 9 into which the winding shaft 3 is inserted and which is protruded and fixed.
The end portion of the support frame 12 is rotatably fixed to the support frame 12.

Further, a fixed support shaft 11 fixed to a support frame 13 is provided protruding from the other side of the rolling cylinder 2.

An operating rope 10 such as a chain or string is installed on the rotary wheel 4 through which the winding shaft 3 is inserted and indirectly connected, and the operating cylinder 9 is integrally installed in the center.

The operation cylinder 9 is provided with an insertion hole 16 into which the winding shaft 3 is inserted, and has a cutting groove 15 formed in its longitudinal direction and a bulge 18 at its end.

A pressing projection 14 for pressing is provided at both ends of the outer periphery of the bulging portion 18.
, 14 are formed.

Next, the storage cylinder 6 that stores the bulging part 18 is attached to the fixed frame 5, and both ends are bent inward to form an engaging piece 8.
, 8 are formed inside the winding strip 7.

Reference numeral 17 indicates a spring for use above the liquid, which is housed in the rolling cylinder 2 as required.

This device is constructed as described above, and now to explain the operation of this device, 1. When rolling down the blind 1 from the state where the blind 1 is wound around the rolling tube 2, an operation installed on the rotary wheel 4 is required. When the rope 10 is pulled in one direction, the rotary wheel 4 rotates together with the operating barrel 9.

At this time, the pressing protrusion 14 of the bulge 18 at the end of the operation cylinder 9
is engaged with one engagement piece 8 of the winding strip 7 in a pressed state, causing the winding strip 7 to contract inward, and rotating the winding shaft 3 while loosening the pressure contact with the storage cylinder 6 to open the blind. 1 is turned down.

Next, when stopping the rolled-up blind 1, when the operation of the operating rope 10 is stopped, the weight of the blind 1 is transmitted to the rolling-up tube 2, the rolling-up tube 2 rotates, and at the same time the winding-up shaft 3 is rotated. The winding strip 7, which is movable and presses one bent piece 8 of the winding strip 7 on the upper part of the winding shaft 3 as shown in FIG. 5, expands outward and presses against the inner surface of the operating cylinder 9.

Therefore, the winding shaft 3 is also unable to rotate, the winding cylinder 2 also stops rotating, and the blind 1 can be stopped at a predetermined position.

Further, when rolling up the blind 1, when the operating rope 10 is pulled up in the opposite manner to the above, the winding strip 7 is loosened and the blind 1 can be rolled up freely.

Note that when the winding spring 17 is inserted into the winding cylinder 2, the restoring force of the spring 17 is added, making the operation easier and having no effect on normal operations.

According to this invention, the blind can be easily rolled up, unrolled and stopped by simply pulling the operating rope installed on the rotating wheel, and the operating cylinder provided on the rotating body and the spring are combined. It has the excellent effect of being firmly assembled by a very simple structure with an intervening storage cylinder, and being trouble-free and inexpensive.

Furthermore, since a cutting groove is formed in the longitudinal direction of the operating barrel attached to the rotary wheel, it is easy to insert the winding shaft, and
This has the effect of reliably preventing detachment, and the effect of ensuring the engagement of the winding strip with the bent piece due to the bulge formed at the end.

Since the winding strip is housed inside the storage tube housing the bulge, the winding strip can be stably held and the winding strip can be prevented from accidentally separating or breaking down.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; Fig. 1 is a front view with the blind rolled down, Fig. 2 is a sectional view with a part of the main part cut away, and Fig. 3 is an exploded slope view of the main part. , FIG. 4 is a vertical side view of the main part, and FIG. 5 is a vertical side view of the main part when the blind is stopped lowering. 1 is a blind, 2 is a winding cylinder, 3 is a winding shaft, 4 is a rotary wheel, 5 is a fixed frame, 6 is a storage cylinder, 7 is a winding strip, 8 is a bending piece, 9 is an operating cylinder, 15 is a The resection groove 18 is a bulge.

Claims (1)

[Scope of utility model registration request] The winding cylinder 2 that rolls up the blind 1, rolls up the blind 1, or stops the blind 1 mid-rolling has a winding shaft 3 having a short cross section protrudingly fixed to one end thereof, and an operating cylinder into which the winding shaft 3 is inserted. The end of the body 9 is rotatably fixed to a support frame 12, and a fixed support shaft 11 fixed to a support frame 13 is protruded from the other side of the rolling cylinder 2.
The rotating wheel 4 through which the winding shaft 3 is inserted and indirectly connected to the winding shaft 3 includes:
The operating rope 10 is installed, and the operating cylinder 9 is integrally installed on one of the shaft parts, and the winding shaft 3 is attached to the operating cylinder 9.
An insertion hole 1 provided with a longitudinal cutting groove 15 into which the
6, a bulge 18 is formed at the end of the operation cylinder 9, and pressing protrusions 14, 14 are formed at both ends of the outer periphery of the bulge 18.
The swollen portion 18 has engaging pieces 8, which correspond to the pressing protrusions 14, 14 when the operating rope 10 is stopped.
8 is wound around the outer periphery of the winding strip 7, each engaging piece 8, 8 of the winding strip 7 is in pressure contact with the upper end of the winding shaft 3, and a fixed frame attached to the support frame 12. A blind opening/stopping device characterized in that the winding strip 7 is stored in a storage cylinder 6 provided in the window.