JP4020788B2 - Shutter locking device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shutter locking device that is attached to an outdoor surface such as a sash for a house to prevent wind and rain and to prevent crime.
[0002]
[Prior art]
For sashes for homes, shutters are installed to prevent wind and rain and to prevent crime. The shutter is provided with a shutter box integrally or separately from the window frame at the upper position of the window, and a storage drum urged in the direction of winding and rotating is disposed in the shutter box. In addition, a shutter in which a long shutter plate is hinged in the vertical direction can be rolled up and stored.
[0003]
Most of the shutters are provided with a shutter locking device at the center position of the end slat at the lowermost end, and are automatically locked when the shutter is closed by human power or power, and released by a release lever operated from the indoor side. A lock is made.
[0004]
However, in the case of such a shutter device, when opening the shutter, in order to unlock the shutter device disposed in the approximate center of the end slats, the shoji on one side must be almost fully open, There are problems that the unlocking operation is troublesome, and there is a problem that the process from unlocking to shutter opening operation cannot be performed smoothly by a series of operations.
[0005]
In order to cope with such a problem, the present applicant has proposed a shutter locking device 30 as shown in FIG. The shutter locking device 30 includes a relay lever 36 that can be unlocked by engaging or disengaging the lock 34 fixed to the shutter side frame 33 at both ends of the base 31 of the shutter bottom end. A shutter locking device main body 32 extended to the indoor surface side of the baseboard 31 is disposed, and is a long member along the longitudinal direction of the baseboard 31 on the indoor surface side of the baseboard 31, By providing an unlocking and opening / closing operation lever 35 having an engaging pin 37 that engages with the lower surface side of the relay lever 36 at both ends, respectively, by swinging around the edge as a rotation center, The unlocking operation can be performed from any place, and from the unlocking to the shutter opening can be performed by a series of operations without changing hands. The specific structure of the shutter locking device 30 will be described in detail in the section “Embodiments of the Invention” described later.
[0006]
[Patent Document 1]
JP-A-2002-227571 [0007]
[Problems to be solved by the invention]
However, in the case of the shutter locking device 30, a metal such as stainless steel or zinc die-cast is used as the material of the relay lever 36, and a metal such as stainless steel or zinc die-cast is similarly used for the engagement pin 37. ing. Therefore, an unpleasant frictional sound may be generated due to contact between metals during locking and unlocking. In addition, the friction causes wear on the engaging surfaces of the both over a long period of use, which significantly lowers the durability or increases the frictional resistance of the unlocking opening / closing operation lever 35, resulting in poor operability. There was.
[0008]
Therefore, the main problem of the present invention is that in the shutter locking device structure described above, the friction between the relay lever and the engaging pin at the time of locking and unlocking is prevented, and durability is not lowered even when used for a long period of time. An object of the present invention is to provide a shutter locking device capable of maintaining the operability of the unlocking and opening / closing operation lever.
[0009]
[Means for Solving the Problems]
As an invention according to claim 1 for solving the above-mentioned problems, a lock fixed to a shutter frame and a base plate at both ends of the lowermost end of the shutter are respectively disposed and engaged with or engaged with the lock. An unlocking device main body for a shutter that extends to the indoor surface side of the baseboard, which is unlocked by unlocking and unlocked by an upward movement operation, and the interior of the baseboard It is an elongated member that is provided on the surface side and that extends along the longitudinal direction of the baseboard, and is constituted by an unlocking and opening / closing operation lever having engagement pins that engage with the relay lever at both ends. In the shutter locking device,
The relay lever is provided with a notch groove and a relay protective piece made of a synthetic resin material provided with a retaining locking portion that is automatically locked in the notched groove when inserted. A shutter locking device characterized by being attached to a lever is provided.
[0010]
According to the first aspect of the present invention, since the contact protection piece made of a synthetic resin material is attached to the relay lever, and contact between the metals is eliminated, the relay lever and the engaging pin at the time of locking and unlocking In addition, the durability of the unlocking / opening / closing operation lever can be maintained without deterioration in durability even when used for a long period of time. In addition, when attaching the contact protection piece, a notch groove is provided in the relay lever, and when the tip of the relay lever is inserted into the hollow portion of the contact protection piece, the retaining locking portion is automatically Since it is engaged with the notch groove and is held so as not to be removed, it can be easily attached and unexpectedly used while the contact protection piece comes into contact with the engagement pin due to vibration. It is possible to completely avoid the situation where the relay lever falls off from the relay lever.
[0011]
According to a second aspect of the present invention, the notch groove is provided on an upper edge side of the relay lever, the contact protection piece is located at a corresponding portion of the notch groove, and the retaining locking portion is provided on the relay lever. 2. The shutter locking device according to claim 1, wherein the shutter locking device is formed so as to project obliquely downward from the insertion distal end side toward the insertion proximal end side, and is a locking piece that engages the notch groove in the locked state. Is provided. As a specific structure of the contact protection piece, a retaining locking portion that protrudes obliquely downward from the insertion distal end side of the relay lever toward the insertion base end side is formed, and the contact protection piece It is desirable that when the leading end of the relay lever is inserted into the hollow portion, the retaining locking portion automatically engages with the notch groove and is held unremovable.
[0012]
According to a third aspect of the present invention, there is provided the shutter locking device according to the first or second aspect, wherein the material of the contact protection piece is an abrasion-resistant resin such as high-density polyethylene, polypropylene, polyamide, or polyacetal. The
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of a shutter locking device 1 according to the present invention, and FIG. 2 is a sectional view. In addition, directions and position displays such as left and right, up and down, clockwise direction, and counterclockwise direction are all displayed on the drawing.
[0014]
The shutter has a structure in which a metal plate material having a small width and a long length in the horizontal direction is hinged and can be wound into a roll shape, and a baseboard 2 (made of metal) called an end slat is provided at a lower end portion thereof. A shutter locking device main body 3 is disposed at both ends of the baseboard 2 and a lock 5 is disposed at a lower end portion of the shutter side frame 4, and the shutter locking device main body when the shutter is closed. The third lock piece 11 is engaged with the lock pin 5a of the lock 5 to be locked.
[0015]
On the other hand, when it is desired to open the shutter, the long unlocking and opening / closing operation lever 6 disposed on the indoor side surface of the baseboard 2 over the length of the baseboard 2 is placed at an arbitrary position. When it is lifted upward, the lock piece 11 and the lock pin 5a in the shutter locking device main body 3 are unlocked, and the shutter can be lifted continuously without changing hands.
[0016]
The shutter locking device main body 3 will be described in detail below. The shutter locking device body 3 is swingable by a case 10 having a substantially inverted U-shaped cross section and a support shaft 14 in the case, as shown in detail in FIG. The lock piece 11 supported by the lock piece 11, the lock rocking piece 12 that can be unlocked by the upward movement operation while holding the lock piece 11 in the locked state by the engagement with the lock piece 11, and the lock piece 11 and the locking rocking piece 12 and urges the lock piece 11 in the unlocking direction (counterclockwise direction), and the locking rocking piece 12 is brought into contact with the lock piece 11. This is a locking device mainly composed of an urging spring plate 13.
[0017]
The case 10 is a member formed into a substantially inverted U-shaped cross-section by bending a metal plate material, and has two holes at the corners and through-holes 15 and 15 penetrating the plate surface. After the shutter locking device main body 3 is inserted from the end, it is fixed by a fixing screw 16 screwed between the through hole 15 and the baseboard 2. Further, a notch U-shaped lock pin insertion groove 10 a is formed in the lower left side of the case 10. Further, as shown in FIG. 4, a spacer 10b is inserted between the facing side plates in order to maintain the interval between the side plates.
[0018]
The lock piece 11 is a member that is swingably supported by the support shaft 14. The lock piece 11 is a lock that will be described later by a short projecting piece 11 a that is relatively located on the lower side and a long projecting piece 11 b that is located on the relatively upper side. A U-shaped groove 11c into which the pin 5a is inserted is formed. In addition, an unlocking engagement step portion 11d is formed on the peripheral edge on the side of the locking swinging piece 12 and a locking engagement step portion 11e is formed. Further, a spring locking portion 11f is formed on the upper side. Is formed.
[0019]
On the other hand, the locking oscillating piece 12 is a member that is slidably supported by the support shaft 17, and a spring locking portion 12c is formed on the upper side. Further, an engaging protrusion 12a for holding the lock piece 11 in a locked state is formed on the periphery on the lock piece arrangement side, and a relay lever 12b extending to the outside of the case 10 is formed. .
[0020]
As will be described later, the relay lever 12b is bent toward the indoor surface side so that an engagement pin 22 protruding sideward from the end surface of the unlocking / opening / closing operation lever 6 can be engaged, The bent portion toward the indoor side is inclined obliquely downward. Also, a concave notch groove 12d is provided on the upper edge side to prevent friction with the engaging pin during locking and unlocking, and to maintain durability and operability for a long period of time as shown in FIG. As shown, a contact protection piece 23 made of a synthetic resin material is attached.
[0021]
As shown in detail in FIG. 6, the contact protection piece 23 is surrounded by a side wall, and an end surface wall 23 b with which the tip of the relay lever 12 b abuts on one side end surface (back end surface) is formed. The hollow lever insertion portion 23a into which the relay lever 12b is inserted is formed on the end surface (opening surface) on the other end side, and a concave notch 23e is formed on the upper side. A retaining locking portion 23f that protrudes obliquely downward from the upper wall 23c on the insertion distal end side facing the notch 23e toward the insertion proximal end side is formed.
[0022]
As the material of the contact protection piece 23, basically any material can be used as long as it is a synthetic resin. However, from the viewpoint of durability, a material with low wear due to contact with metal is preferably used. Is done. Specifically, wear-resistant resins such as high-density polyethylene, polypropylene, polyamide, and polyacetal are preferably selected.
[0023]
As shown in FIG. 7, the contact protection piece 23 is attached by inserting the end of the relay lever 12 b into the lever insertion portion 23 a of the contact protection piece 23. When the distal end of the relay lever 12b is inserted, the retaining locking portion 23f that protrudes obliquely downward from the upper wall 23c on the insertion distal end side toward the insertion base end side automatically enters the cutout groove 12d of the relay lever 12b. In the locked state, the front end of the retaining locking portion 23f is brought into contact with the notch surface 12e on the front side of the notched groove 12d formed in the relay lever 12b. The contact protection piece 23 is held so as not to be removable.
[0024]
On the other hand, between the lock piece 11 and the locking oscillating piece 12, the spring engaging portion 11f of the lock piece 11 is used as one end side engaging portion, and the spring engaging portion 12c of the locking oscillating piece 12 is provided. Is used as the other end side locking portion, and a spring plate 13 curved in an arc shape is interposed, and the lock piece 11 is urged counterclockwise (unlocking direction) about the support shaft 14. At the same time, the locking oscillating piece 12 is urged in the clockwise direction (abutting direction to the lock piece 11) about the support shaft 17.
[0025]
On the other hand, the lock 5 fixed to the lower end portion of the shutter side frame 4 is fixed to the shutter side frame 4 by a fixing screw 20 using a through hole formed in the back plate, and directed toward the facing side plate. A lock pin 5a is provided.
[0026]
A long unlocking and opening / closing operation lever 6 along the longitudinal direction of the baseboard 2 is disposed on the indoor surface side of the baseboard 2. As shown in FIG. 2, the unlocking / opening / closing operation lever 6 has an upper engaging pocket hole 6a having a circular cross section in the upper part, a lower engaging pocket hole 6b having a circular cross section in the lower part, and a lower part. A hollow section having a handle portion 6c at the edge and extending over the entire length of the baseboard 2 and having a circular cross section formed along the longitudinal direction of the baseboard 2 at the upper part on the indoor surface side of the baseboard 2 The upper engagement pocket hole 6a is attached to the strip 21 so as to be fitted, and is supported so as to be swingable around the projection 21 as a rotation center. In addition, engagement pins 22 projecting outward are inserted and supported at both ends of the lower engagement pocket hole 6b, and the contact protection piece 23 attached to the relay lever 12b of the shutter locking device body 3 is inserted and supported. Is engaged with the lower surface side of the relay lever 12b.
[0027]
In the shutter locking device body 3, when closing the shutter, as shown in FIG. 3, when the baseboard 2 is lowered together with the shutter to the closed position, the lock pin 5 a is inserted into the lock pin insertion groove 10 a of the case 10. It invades and abuts the long protruding piece 11b of the lock piece 11. If the descent continues further, as shown in FIG. 5, the lock pin 5a enters the deep part of the lock pin insertion groove 10a while rotating the lock piece 11 in the clockwise direction. At the same time, the engaging protrusion 12 a of the locking rocking piece 12 engages with the locking engaging step portion 11 e of the lock piece 11, and the lock piece 11 is prevented from returning. It is held so as not to come out into the pin insertion groove 10a.
[0028]
When the shutter is opened, when the unlocking / opening / closing operation lever 6 is pushed upward, the relay lever portion of the locking rocking piece 12 is moved along with the rise of the engaging pin 22 of the unlocking / opening / closing operation lever 6. 12b is pushed upward, the locking oscillating piece 12 is oscillated counterclockwise against the urging force of the spring plate 13 and separated from the lock piece 11, and the engagement is released. The lock piece 11 is swung in the unlocking direction (counterclockwise) by the force, and the lock pin 5a is released from the lock pin insertion groove 10a so that the shutter can be continuously pulled up as it is.
[0029]
(Other embodiment examples)
(1) In the above embodiment, the unlocking / opening / closing operation lever 6 is swingable with the upper edge as the center of rotation. However, the unlocking / opening / closing operation lever 6 is slid in the vertical direction. It may be. Specifically, as shown in FIG. 8, a member having an inverted L-shaped cross section is formed with a plurality of long holes 25a, 25a,... That are long in the vertical direction, and penetrates the long holes 25a, 25a,. It is also possible to use the unlocking and opening / closing operation lever 25 supported by the mounting bolts 28, 28...
[0030]
(2) The unlocking / opening / closing operation lever 6 may be of a type that slides in the vertical direction. Specifically, as shown in FIG. 9, a member having an L-shaped cross section is formed with a plurality of elongated holes 26 a, 26 a... In the horizontal direction on the plate surface, and a width is formed through these elongated holes 26 a, 26 a. The mounting bolts 27, 27 planted on the tree 2 are supported so as to be slidable in the horizontal direction, and are inclined upward to engage with the lower side of the relay lever 12 b of the shutter locking device body 3 at one end. Similarly, the unlocking and opening / closing operation lever 26 is formed with a side 26b and an upwardly inclined side 26c that engages with the lower side of the relay lever 12b of the shutter locking device body 3 at the other end. But you can.
[0031]
(3) Further, the above embodiment is an example of a manual shutter, but it can be similarly applied to an electric shutter.
[0032]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to prevent friction between the relay lever and the engaging pin at the time of locking and unlocking, and the durability is not deteriorated even when used for a long time. The operability of the operation lever can be maintained.
[Brief description of the drawings]
FIG. 1 is a front view of a shutter locking device 1 according to the present invention.
FIG. 2 is a cross-sectional view thereof.
FIG. 3 is a side view of the shutter locking device body 3 when unlocked.
FIG. 4 is a view taken along the line IV-IV.
FIG. 5 is a side view of the shutter locking device body 3 when locked.
6A is a side view, FIG. 6B is a rear view, and FIG. 6C is a front view of the contact protection piece 23;
FIGS. 7A and 7B are diagrams showing how to attach the contact protection piece 23 to the relay lever 12b, in which FIG. 7A shows a state during insertion, and FIG. 7B shows a state after insertion.
FIG. 8 is a view showing another example of the unlocking / opening / closing operation lever.
FIG. 9 is a view showing another example of the unlocking / opening / closing operation lever.
FIG. 10 is a front view of a conventional shutter locking device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Shutter locking device, 2 ... Baseboard, 3 ... Shutter locking device main body, 4 ... Shutter side frame, 5 ... Locking, 5a ... Lock pin, 6 ... Unlocking opening / closing operation lever, 10 ... Case, 11 ... Lock piece, 12 ... Locking rocking piece, 12b ... Relay lever, 12d ... Notch groove, 13 ... Spring plate, 22 ... Engagement pin, 23 ... Protection piece for contact, 23f ... Stopping locking part

Claims (3)

A lock that is fixed to the shutter frame and both ends of the baseboard at the lowermost end of the shutter, and are engaged and unlocked by engaging or disengaging the lock and moving upward A shutter unlocking device body in which a relay lever that can be unlocked by operation extends to the interior surface side of the baseboard, and a length along the longitudinal direction of the baseboard while being provided on the interior surface side of the baseboard In a shutter locking device composed of a member of a scale and an unlocking and opening / closing operation lever provided with engaging pins that engage with the relay lever at both ends,
The relay lever is provided with a notch groove and a relay protective piece made of a synthetic resin material provided with a retaining locking portion that is automatically locked in the notched groove when inserted. A shutter locking device characterized by being attached to a lever. The notch groove is provided on an upper edge side of the relay lever, and the contact protection piece is located at a position corresponding to the notch groove, and the retaining locking portion is inserted on the proximal end side from the insertion distal end side of the relay lever. The shutter locking device according to claim 1, wherein the shutter locking device is formed so as to protrude obliquely downward toward the top and is a locking piece that engages in the notch groove in a locked state. The shutter locking device according to claim 1 or 2, wherein a material of the contact protection piece is a wear-resistant resin such as high-density polyethylene, polypropylene, polyamide, or polyacetal.

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