JP6640537B2 - Latch lock and method of assembling latch lock in architectural shutter device - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a technical field of a latch lock and a method of assembling the latch lock in an architectural shutter device to be installed at an opening such as a doorway of a building.

Today, architectural shutter devices for opening and closing the openings by raising and lowering the shutter curtains at openings such as entrances and exits are sometimes built. In this case, the shutter curtain is closed in a state where the shutter curtain is closed. A latch lock may be provided so as not to be inadvertently raised. As such a latch lock, a latch bar is protruded to the left and right by operating a lock operation tool (lock operation lever) on the indoor side surface of the seat plate slat, whereby the latch provided at the tip of the latch bar is connected to the guide rail. The structure is such that the shutter curtain is locked from the lower side by the provided latch receiver so that the shutter curtain cannot be raised (for example, see Patent Document 1). By the way, this type has a configuration in which a C-shaped guide groove having an open side on the indoor side is formed on the indoor side surface of the seat plate slat, and a latch bar is provided in the guide groove. Is designed to reduce the unpleasant collision noise generated when the latch bar contacts the groove of the guide groove by reducing the contact area of the latch bar with the guide groove. However, this has a problem that although the contact area between the latch bar and the groove bottom surface is small, there is still a contact portion, so that it is not possible to efficiently eliminate the collision noise.
On the other hand, there has been proposed a structure in which a buffer member is provided on a slat side surface of a latch bar to avoid a direct collision between the latch bar and the slat (for example, see Patent Document 2).

Japanese Patent No. 4773164 Japanese Patent No. 5058502

  However, in this device, the lip portion provided on the latch bar is cut into the buffer member, and the buffer member and the latch bar are bonded to each other with an adhesive to prevent the buffer member from being accidentally moved or detached. However, the work required to cut into the lip and bonding with an adhesive was required, resulting in poor workability. In addition, the adhesive was peeled off due to the vibration and the deterioration of the adhesive when opening and closing the shutter curtain or receiving wind. There is a problem that the durability is inferior, and there is a problem to be solved by the present invention.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has been made for the purpose of solving these problems. The invention of claim 1 is an architectural shutter in which a shutter curtain opens and closes an opening such as an entrance. In the apparatus, when a latch lock is provided on the shutter curtain, the latch bar moves in the left-right direction by operating the operating tool, and the latch at the tip of the latch bar is removably engaged with a latch receiver provided on the guide rail to lock. The latch bar is slidably fitted in a guide groove provided in a shutter curtain in a left-right direction . The cushioning material is loosely fitted on the latch bar and slides on the inner surface of the guide groove. A latch lock in an architectural shutter device characterized in that the noise is prevented from being generated by being externally fitted in close contact so as to be in contact with the latch lock.
The invention according to claim 2 is the latch lock in the architectural shutter device according to claim 1, wherein the cushioning material is a heat-shrinkable material.
The invention according to claim 3 is the latch lock in the architectural shutter device according to claim 1 or 2 , wherein a plurality of heat-shrinkable materials are provided in a state of being scattered.
A fourth aspect of the present invention is the latch lock according to the second or third aspect, wherein the heat-shrinkable material is a heat-shrinkable tube.
According to a fifth aspect of the present invention, in the architectural shutter device in which the shutter curtain is opened and closed and raised and lowered at an opening such as an entrance, a latch bar is moved to the left and right by operation of an operating tool, and a latch at a tip of the latch bar is guided by a guide rail. In providing a latch lock which is engaged and disengageable with the latch receiver provided for locking, the latch bar is fitted inside a guide groove provided in the shutter curtain so as to be slidable in the left-right direction. After the cushioning material is loosely fitted to the latch bar, the cushioning material is contracted and fitted closely to the latch bar so as to be in sliding contact with the inner surface of the guide groove, thereby preventing generation of abnormal noise. A method for assembling a latch lock in a building shutter device, which is a feature of the present invention.

According to the first or fifth aspect of the present invention, the abnormal noise generated when the latch bar comes into contact with the shutter curtain can be prevented by the cushioning material which is fitted to the outside in a state in which the latch bar is easily brought into close contact with the latch bar.
According to the second aspect of the present invention, the cushioning material is a heat-shrinkable material, so that the cushioning material can be easily fitted to and closely attached to the latch bar.
According to the third aspect of the present invention, the amount of the heat-shrinkable material can be reduced and the cost can be reduced.
According to the fourth aspect of the present invention, since the heat-shrinkable material is a heat-shrinkable tube, the entire periphery of the latch bar is externally fitted to the heat-shrinkable tube, so that generation of abnormal noise can be reduced efficiently.

It is a front view of a shutter device. It is a principal part back view of a shutter curtain. It is a principal part side view of a shutter curtain. It is a front view of a latch bar. It is operation | movement explanatory drawing which shows before and after contraction of a heat-shrinkable tube.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a shutter curtain. The shutter curtain 1 is wound around a winding drum 2 provided on a ceiling portion, and is guided by guide rails 3 provided on the left and right sides of an opening to open and close. Are as before.

A latch lock 5 embodying the present invention is provided on a seat plate (seat slat) 4 provided at the lowermost end of the shutter curtain 1. The latch lock 5 is provided with an operation lever (operating tool) attached to the seat plate 4. ) 6, a latch bar 7, which is interlocked with the operation lever 6 and moves in the left-right direction by operating the operation lever 6, provided at the tip of the latch bar 7, and locks the operation lever 6 when the shutter curtain 1 is fully closed. When operated to the position, a latch 9 is engaged with a latch receiver (latching member) 8 provided on the guide rail 3 to prohibit the opening movement of the shutter curtain 1. Note that the latch bar 7 and the latch 9 may be integrated or separate.
The latch bar 7 is provided on the indoor side surface of the seat plate 4 and is slidably fitted in the guide groove 10 which is open on the indoor side. It is formed of a mold material.

The heat-shrinkable heat-shrinkable tube 11 is closely fitted to the latch bar 7 and is scattered at appropriate intervals. The heat-shrinkable tube 11 is dimensioned so that the latch bar 7 can be loosely fitted outside the heat-shrinkable state before the heat-shrinkage. When the heat-shrinkable tube 11 is heated by a heating tool 12 such as a heater, the heat-shrinkable tube 11 thermally shrinks and is fitted to the latch bar 7 in an intimate manner. The heat-shrinkable tube 11 comes into direct contact (sliding contact) with the heat-shrinkable tube 11 to prevent generation of abnormal noise due to metal contact. In this case, since the heat-shrinkable tube 11 becomes a cushioning material and fits tightly around the entire periphery of the latch bar 7, the heat-shrinkable tube 11 is attached to the surface of the latch bar 7 in a uniform (smooth) and non-slip manner. Since it is possible to contact the entire inner peripheral surface of the guide groove 10, abnormal noise can be more efficiently prevented.
The heat-shrinkable tube 11 is preferably made of a resin material such as polyolefin, fluorine resin, silicone resin, or polyvinyl chloride, and has excellent flame retardancy (fire resistance).

  In the present embodiment configured as described above, the opening can be opened and closed by raising and lowering the shutter curtain 1, but when the operation lever 6 is operated to the locking position in a state where the shutter curtain 1 is fully closed, the latch bar 7 is moved outward in the left-right direction. , Whereby the latch 9 is engaged with the latch receiver 8 from below and is locked.

  As described above, the latch bar 7 moves left and right in the guide groove 10. However, since the heat-shrinkable heat-shrinkable tube 11 is in close contact with the latch bar 7, for example, if the latch bar 7 swings back and forth, the guide groove Since the heat-shrinkable tube 11 comes into contact with the groove surface of the groove 10, no unpleasant noise (metallic sound) is generated and the sound is quiet.

  In addition, since the heat-shrinkable tube 11 fits loosely onto the latch bar 7 before the heat-shrinkage, the outer-fitting operation is simple, and the heat-shrink tube 11 is brought into close contact with the latch bar 7 by the heating process by the heating tool 12. Since the contraction occurs, the assembling work of the heat-shrinkable tube 11k is also simplified.

In addition, since a plurality of heat shrink tubes 11 are provided on the latch bar 7 in a dotted state, the heat shrink tubes 11 can be made shorter than when provided over the entire length, and cost can be reduced.
Moreover, since the heat-shrinkable tube 11 can be attached with the latch bar 7 removed, it can be retrofitted to an existing one, and can be easily replaced when worn.

Note that the present invention is not limited to the above-described embodiment, and the latch lock can be embodied not as a seat plate but as a slat provided in the middle in the vertical direction.
The cushioning material is not limited to the heat-shrinkable material, and may be, for example, one having rubber elasticity. In this case, the cushioning material is a material which is forcibly expanded against the rubber elasticity. After being fitted, it is contracted by canceling the expansion, so that it comes into close contact.
Further, when the cushioning material is a heat-shrinkable material, the shape is not particularly limited as long as it is not limited to a tube, but may be a C-shaped one, as long as it is heat-shrinkable and fits tightly to the outside.
As the cushioning material, an adhesive may be applied to the inner surface, and by doing so, careless movement of the cushioning material is further prevented. It is more preferable that the cushioning material has a slippery surface.
Further, in the above-described embodiment, the description has been given of the case where the latch bar is fitted in the guide groove so as to be movable left and right. However, the present invention is not limited to this. The latch band can be attached to the latch band so that the latch bar can be freely moved in the left-right direction. In this case, the heat-shrinkable material includes a portion with and without a latch band. Can be attached to any of them.

  INDUSTRIAL APPLICABILITY The present invention can be used as a latch lock of an architectural shutter device provided in an opening such as an entrance, in which generation of abnormal noise is prevented.

REFERENCE SIGNS LIST 1 shutter curtain 2 winding drum 3 guide rail 4 seat plate 5 latch lock 6 operating lever 7 latch bar 8 latch receiver 9 latch 10 guide groove 11 heat-shrinkable tube

Claims (5)

In an architectural shutter device in which a shutter curtain opens and closes an opening such as an entrance, the latch bar moves in the shutter curtain in the left-right direction by operating an operating tool, and the latch at the tip of the latch bar engages with a latch receiver provided on a guide rail. In providing a latch lock that locks removably and locks,
The latch bar is fitted inside a guide groove provided in the shutter curtain so as to be slidable in the left-right direction,
In the shutter device for construction, a shock absorbing material is prevented from being generated by shrinking a buffer material externally fitted to the latch bar so as to be in close contact with the inner surface of the guide groove so as to be in sliding contact with the inner surface of the guide groove . Latch lock. The latch lock according to claim 1, wherein the cushioning material is a heat-shrinkable material. The latch lock according to claim 1 or 2 , wherein a plurality of heat-shrinkable materials are provided in a dotted state. The latch lock according to claim 2, wherein the heat-shrinkable material is a heat-shrinkable tube. In an architectural shutter device in which a shutter curtain opens and closes an opening such as an entrance, the latch bar moves in the shutter curtain in the left-right direction by operating an operating tool, and the latch at the tip of the latch bar engages with a latch receiver provided on a guide rail. In providing a latch lock that locks removably and locks,
The latch bar is fitted inside a guide groove provided in a shutter curtain so as to be slidable in the left-right direction,
After the cushioning material is loosely fitted to the latch bar, the cushioning material is contracted and fitted closely to the latch bar so as to be in sliding contact with the inner surface of the guide groove, thereby preventing generation of abnormal noise. A method for assembling a latch lock in an architectural shutter device.

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