JPH0578631B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shutter, and more particularly to an airtight safety device for the end slat thereof.

[Conventional technology]

As a safety device for this kind of shutter end slat, for example, Utility Model Publication No. 45356 of 1982,
No. 51357 etc. are known.

According to these, a safety switch is provided in a protruding or bulging shape on the flat end slat, the safety switch detects an obstacle, and a stop signal transmitting device fixed to the indoor side of the end slat in a protruding manner is used to start the shuttle. In order to prevent the safety device from activating under normal conditions, when the end slats are lowered, they contact the floor earlier than the safety switch, allowing them to move up and down and stopping the shutter motor as well. It is said to be equipped with a pin-shaped or folded curve-shaped lift switch.

[Problem to be solved by the invention]

These safety devices are excellent in stopping the descent of the end slat midway when an obstacle is detected, and are also excellent in preventing the safety device from operating under normal conditions, but they are not suitable for use with heavy-duty shutters, for example. Although it can be used for industrial entrances, garages, etc. that do not require airtightness, for example, when used for a shutter such as a window shutter that has a lower frame with a forward-sloping water cut surface at the lower end of the guide rail, It is difficult to ensure the airtightness of the end slats, and the stop signal transmitting device protrudes into the room, which spoils the exterior appearance and serves as a water return for the lower frame. The problem is that there is not enough space for installation.

In other words, the lower frame is considered to be indispensable in a window shutter, and the lower frame generally has a complex shape with a forward-sloping water cut surface and a water return, and is installed close to the aluminum sash to protect it. Therefore, safety equipment must be compatible with these requirements, and it is also necessary to ensure airtightness by soundproofing the shutter and protecting the aluminum sash.

However, the shutter safety device described above uses two types of switches, a safety switch and a lift switch, and the lift switch detects the floor surface at different times before the safety switch and stops the shutter from lowering. There may be a slight installation error,
If a slight positional shift occurs during use, the relative positional relationship between the safety switch and the floor will be disturbed, and it is expected that a gap will occur between them. Therefore, if the detection surface is inclined like the lower frame above, the lift switch may slide on the slope due to the back and forth rocking of the end slat, causing a delay in operation and the activation of the safety device. It is also expected that

In other words, conventional safety devices assume a flat floor surface, and are designed to prevent malfunctions and detect obstacles based on the relationship with this floor surface. It is inappropriate to use it, and it is also inappropriate to use it as a means to ensure airtightness between it.

The present invention was made in view of such circumstances,
The problem to be solved is to develop an airtight safety device for the shutter end slat that can detect obstacles and prevent malfunctions, as well as ensure airtightness, based on the premise that the lower frame has the above-mentioned complex shape. It is on offer.

[Means to solve the problem]

In order to solve this problem, the present invention provides end face stoppers at both ends to ensure that the wind slats are received on the forward inclined water cutting surface of the lower frame, and also provides an airtight safety switch between the end face stoppers. Safety is ensured by making the end facing stopper and the airtight safety switch flush so that the lowest surface of the airtight safety switch seals the forward tilting water cutting face in the longitudinal direction when the partial face stopper contacts the forward tilting water cutting face. It includes a configuration that prevents malfunction of the device and ensures airtightness, and also includes a configuration in which a stop signal transmitting device that operates within an unobstructed guide rail is installed at a fixed position inside the guide rail as a safety device, and a configuration that improves airtightness. In other words, the present invention includes an insertion base inserted and fixed into both ends of a hollow end slat and installed so as to be positioned within each guide rail, and the end slat is protruded downward from the end slat, and the lower surface thereof is downwardly disposed. a pair of end facing stoppers having the same protrusion width and the same slope and having sloped surfaces so as to face the forward inclined water cutting surface of the frame; a stop signal transmitting device disposed built-in in one of the end facing stoppers, and the above-mentioned A bulge is formed downward from the end slat over the entire length between the pair of end face stoppers, and the lowermost surface of the bulge is flush with the end face stopper at a predetermined position in the depth direction, thereby sealing the forward inclined water cut surface of the lower frame in the longitudinal direction. An airtight safety switch is provided in the form of an elastic bulge to enable the stop signal transmitting device to operate, and an airtight member installed in the longitudinal direction of each guide rail to seal a position near the end of the end slat. The gist of the invention relates to an airtight safety device for shutter end slats, which is a means for solving the above-mentioned problems, and furthermore, an obstacle is detected by elastic compression, and a stop signal transmitting device. The embodiments of the invention are that the device is a battery-operated infrared transmitting device and that the end surface stopper is made of hard nylon.

〔Example〕

The present invention will be described in more detail below with reference to drawings showing embodiments. In FIGS. 1 to 3,
1 is an end slat, 3 is an end face stopper having an insertion base 5, 8 is a stop signal transmitting device, 11
2 is an airtight safety switch; 20 is a guide rail that guides both ends of the end slat 1 up and down; 22 is a lower frame installed at the lower end of the guide rail 20;
3 indicates the forward-inclined water cutting surface of the lower frame 22, respectively.

The end slat 1 has a hollow part 2, and an insertion base 5 is inserted and fixed into the hollow part 2, and a pair of end faces are provided at both ends of the end slat 1 so as to be positioned within each guide rail 20. A stopper 3 is installed.

The end face stopper 3 is made of hard nylon, in which symmetrical stopper members 4, each divided into front and rear parts in this example, are joined together, and the inside thereof is hollow, and the insertion base 5 is divided into front and rear parts. On the other hand, a lower surface is used which has an inclined surface 7 along the slope of the forward inclined water cutting surface 23 of the lower frame 22, and the same shape is used on the left and right sides of the end slat 1 and reversed in the left and right direction to form the above-mentioned pair. It is designed so that

These end surface stoppers 3 are formed into downwardly protruding shapes on the end slats 1, and have an inclined surface 7 on the lower surface thereof.
is installed on the end slat 1 so as to face the forward inclined water cut surface 23 of the lower frame 22 in the depth direction, and therefore the inclined surface 7 of the end face stopper 3 at both ends has the same protrusion width with respect to the end slat 1. It is arranged so that it has a slope.

The stop signal transmitting device 8 includes an end slat 1
It is built into one end surface stopper 3 of both ends, and is arranged in a fixed position within each guide rail 20 so that the transmission operation is not obstructed.In other words, in this example, the insertion base A stop signal transmitting device 8 using an infrared transmitting device is arranged in one space of the compartment 5, and the other space is used as a battery space 6 for a battery for operating the device, and an infrared lamp 10 connected from the infrared transmitting device 8 with a lead wire 9 is arranged. The infrared transmitting device 8 is built in so as to protrude from the upper surface of the end face stopper 3, and this infrared transmitting device 8 is also connected to an airtight safety switch 11, which will be described later, by a lead wire 9, and is connected to an airtight safety switch 11 which will be described later. It is activated by detection, causes the infrared lamp 10 to emit light, operates a limit switch (not shown) in the shutter case above the guide rail 20, and stops the shutter motor (also not shown).

In this example, the airtight safety switch 11 is an integral piece made of insulating and elastic soft synthetic rubber, which has a thick contact portion 12 curved downward and a tape switch 13 built into a hollow portion.
The airtight safety switch 11 has the downwardly curved thick contact portion 12 installed in a downwardly bulging shape of the end slat 1 over the entire length between the pair of end face stoppers 3 at both ends of the end slat 1. At this time, the lowermost surface of the bulge, that is, the lowermost surface of the thick contact portion 12, is flush with the lower surface of the pair of end surface stoppers 3 at a predetermined position in the depth direction. The airtight safety switch 11 enables the stop signal transmitting device 8 to operate when an obstacle is touched, and is located between the end stoppers 3 such that the end surface stopper 3 is connected to the bottom frame 22.
At the same time as the end slat 1 and the lower frame 2
This also ensures airtightness between the two.

In this example, the guide rail 20 is provided with an airtight material 21 over its entire length in the longitudinal direction before and after its open end, and this airtight material 21 is provided at its lower end at a position near the end of the end slat 1 between the guide rail 20 and the end slat 1. The airtightness of the end slat 1 is improved by filling the gap between the airtight safety switch 11 and the lower frame 22, and continuing the sealing between the airtight safety switch 11 and the lower frame 22 to the guide rail 20 side, and sealing the end slat 1 at both ends. It is meant to make you

Therefore, in this example, if a child places his or her hand on the lower frame 22 or places a foreign object on it, the airtight safety switch 11 detects this as an obstacle and moves the inside of the guide rail to a fixed position. Activate the stop signal transmitter to stop the shutter motor,
While stopping the lowering of the end slat 1, under normal conditions, the end contact stoppers 3 at both ends contact the forward inclined water cutting surface 23 of the lower frame 22 without making any noise, and the end slat 1 is brought into contact with the lower frame 22. At the same time, the airtight safety switch 11 linearly contacts and seals the forward inclined water cutting surface without activating the safety device, thereby ensuring airtightness with respect to the lower frame 22 of the end slat 1 and the guide rail 20. Therefore, an airtight safety device for the shutter end slat that simultaneously detects obstacles, prevents malfunctions, and ensures airtightness is obtained, and since the stop signal transmitting device 8 is built in the end surface stopper 3, It has a good appearance, and there is no need to consider the space for this purpose.

FIG. 4 shows another example of the airtight safety switch 11. In this example, the thick contact part 12 is not provided and the thin contact part 12 is connected to the end slat 1.
This is an example in which a downwardly bulging shape is formed, and the sealing is performed by contacting the forward-inclined water cut surface 23 of the lower frame 2.The rest is the same as the previous example, so the same reference numerals are used. The explanation will be omitted.

The illustrated example is as described above, but when implementing the present invention, the end slat, end The specific shape, structure, material, etc. of the partial surface stopper, stop signal transmitting device, airtight safety switch, airtight material, etc. can be variously changed as long as it does not go against the gist of the invention, and the same as shown and explained above. It is not necessary to specifically limit the

〔Effect of the invention〕

As described above, the present invention includes inserting and fixing insertion bases into both ends of a hollow end slat so as to be positioned within each guide rail, and protruding downward from the end slat, with the lower surface facing the forward-sloping water cut surface of the lower frame. a pair of end face stoppers with the same protrusion width and the same slope with the sloped faces facing each other;
A stop signal transmitting device built into one of the end face stoppers, and a bulge extending downward from the end slat over the entire length between the pair of end face stoppers, with the lowest surface of the bulge being at the same depth as the end face stopper. An airtight safety switch is installed in the longitudinal direction of each guide rail, and an airtight safety switch is formed in an elastic bulge shape to seal the forward inclined water cut surface of the lower frame in the longitudinal direction so as to be flush at a predetermined position in the direction, and can operate the stop signal transmitting device. did,
Since the end slat is characterized by being equipped with an airtight material that seals the position near the end of the end slat, it is possible to detect obstacles, assuming the presence of a complex-shaped bottom frame with a forward-sloping water cut surface. It is possible to provide an airtight safety device for a shutter end slat that can prevent malfunctions and ensure airtightness.

In addition, since the stop signal transmitting device is built into the end face stopper, it operates reliably with the fixed position inside the guide rail, and it also protrudes toward the interior of the room and hits the bottom frame's upright water return. , the appearance can be improved without requiring installation space.

Furthermore, since the present invention has a simple structure,
It is possible to provide an airtight safety device for shutter end slats that can prevent failures as much as possible and is highly durable.

[Brief explanation of drawings]

The drawings show an example. Figure 1 is an enlarged perspective view of the end of the end slat, Figure 2 is a vertical sectional view showing the relationship between the end slat and the lower frame, and Figure 3 is a diagram showing the relationship between the end slat and the guide rail. FIG. 4 is a vertical cross-sectional view showing another example. 1... End slat, 3... End face stopper, 5... Insertion base, 8... Stop signal transmitter, 11... Airtight safety switch, 20... Guide rail, 22... Bottom frame, 23... Front Diagonal cut surface.

Claims (1)

[Scope of Claims] 1. An insertion base is inserted and fixed into both ends of a hollow end slat, and installed so as to be positioned within each guide rail, and is projected downward from the end slat, and the lower surface is connected to the forward inclined water cut surface of the lower frame. a pair of end face stoppers having the same protrusion width and the same slope, and a stop signal transmitting device built into one of the end face stoppers, and the pair of end face stoppers described above. an elastic bulge shape that bulges downward from the end slat over the entire length of the slat, and the lowermost surface of the bulge is flush with the end face stopper at a predetermined position in the depth direction, sealing the forward inclined water cut surface of the lower frame in the longitudinal direction; A shutter comprising: an airtight safety switch that enables the stop signal transmitting device to be activated; and an airtight material installed in the longitudinal direction of each guide rail and sealing a position near the end of the end slat. End slat airtight safety device. 2. The airtight safety of the shutter end slat according to claim 1, wherein the airtight safety switch is made of soft synthetic resin or soft synthetic rubber and detects obstacles by elastic compression of the bulging bottom surface. Device. 3. The airtight safety device for a shutter end slat according to claim 1, wherein the stop signal transmitting device is a battery-operated infrared transmitting device. 4. The airtight safety device for a shutter end slat according to claim 1, wherein the end face stopper is made of hard nylon.