JP2000073638A - Fire resisting cam latch handle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cam latch handle of fire resisting specification type capable of maintain locked state even if a fire has occurred. SOLUTION: At the rear side of a base seat main body made of a resin or die-cast, a base seat reinforcing plate 5 made of steel is arranged, a rotation shaft 11 of a metal handle 2 is constituted with steel and, at the side of the metal handle 2, a base end portion of the rotation shaft is embedded in the metal handle 2 consisting of a resin, and an insert reinforcing metal 12 made of steel and embedded inside the metal handle 2 is connected to a base end embedding portion of the rotation shaft 11 thereby fixing and holding the rotation shaft 11, the rotation shaft 11 penetrates at least the base seat main body 4 and the base seat reinforcing plate 5 and is held at its rear side in a undrawable state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cam latch handle used as a locking device in various windows such as a vertical sliding window, and in particular, avoids a situation in which a window is opened without permission even in the event of a fire. The present invention relates to a cam latch handle of a fireproof type.

[0002]

2. Description of the Related Art Various types of windows, such as vertical sliding windows, are provided with shoji.
A cam latch handle is used as an unlocking device.
As shown in FIG. 1, the cam latch handle includes a locking flange 2a protruding laterally at a base position of the handle rotatably fixed to the window frame.
By locking a to a latch (not shown) fixed to the shoji, the shoji is locked and airtightness is secured at the same time. In addition, in locking / unlocking, when the handle (handle) of the cam latch handle is located in the vertical direction, it is locked, and when it is located in the horizontal direction, it is unlocked.

[0003]

However, in the case of the conventional cam latch handle, most of the handle hardware and pedestal hardware constituting the apparatus are manufactured by die-casting or resin such as aluminum or zinc alloy. When a fire occurs in a room, the aluminum (about 660 ° C.) or zinc alloy (about 420 ° C.) having a low melting point is used.
° C) was deformed by heat, so that the window was opened without permission, and there was a problem that a fire could be burned to the neighbor.

[0004] Accordingly, a main object of the present invention is to provide a cam latch handle of a fireproof type which keeps a locked state even in the event of a fire.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a pedestal metal fitting fixed to a window frame, and a turning operation in a predetermined angle range for applying and unlocking a shoji. The handle hardware is connected to the handle latch via a rotating shaft fixed to the handle hardware.
A pedestal reinforcing plate made of a steel material is provided, and a rotation axis of the handle hardware is made of a steel material.On the handle hardware side, a base end portion of the rotation shaft is embedded in a handle metal made of resin, and For the base embedded portion of the rotating shaft, an insert reinforcing bracket made of steel material embedded in the handle hardware is connected to fix and hold the rotating shaft, and the rotating shaft is at least the base body and The pedestal reinforcing plate is pierced together, and is held undetachably behind the pedestal reinforcing plate.

In the fireproof cam latch handle,
The rotating shaft is made of steel, of course, and a pedestal auxiliary plate made of steel is placed behind the pedestal body made of resin, and the handle hardware supporting the rotating shaft is installed. In this case, the rotation axis is fixed and held by the insert reinforcing metal buried inside the handle hardware, so even if a fire occurs and the pedestal body and the handle hardware are deformed by heat, the rotation axis is of course Since the base is firmly fixed and held by the pedestal auxiliary plate and the insert reinforcing metal having a melting point of about 1600 ° C., it is possible to avoid a situation in which the shoji is opened without permission.

In order to regulate the rotation range of the handle hardware in such a cam latch structure, a concave portion is formed in the back side of the pedestal body in a range including the rotation shaft penetrating portion, and the cross section is bent into a hat shape. The processed pedestal reinforcing plate is installed while fitting the concave and convex portions of each other, and a stopper member for regulating the rotation range of the handle hardware by abutment is fitted into a concave portion formed on the back side of the pedestal reinforcing plate. And a structure in which a rotating element is fixedly mounted on the rotation shaft of the handle hardware, the rotating element abutting against a rotation regulating step formed on the stopper member at the time of locking rotation and unlocking rotation, respectively. It is desirable to do. In this case, it is desirable that the stopper member and the rotator are preferably made of a steel material such as stainless steel.

On the other hand, according to the present invention, when the fireproof cam latch handle is mounted on the window frame, the fixing screw is inserted through the pedestal main body and the pedestal auxiliary plate through a common thread and screwed into the window frame, and is made of resin. Even if the pedestal main body is deformed by heat, a situation in which the pedestal hardware falls off the window frame can be avoided at the same time.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a cam latch handle 1 according to the present invention.
2 is a front view taken along line II-II of FIG. 1, FIG. 3 is a view taken along line III-III of FIG. 1, and FIG. 4 is an exploded view thereof.

The cam latch handle 1 is mainly composed of a handle fitting 2 serving as an operating member for locking and unlocking, and a pedestal fitting 3 fixed to the window frame 30 side. In order to meet the specifications, a pedestal auxiliary plate 5 made of a steel material such as stainless steel is provided on the back side of the pedestal main body 4 made of a resin, and the turning shaft 11 of the handle fitting 2 is made of a steel material such as stainless steel. On the side of the handle fitting 2 in which the base end portion of the shaft 11 is embedded, an insert reinforcing metal fitting 12 made of a steel material and embedded in the handle fitting 2 is fixed to hold the rotating shaft 11 fixed.

The handle metal 2 is made of a resin material such as polyamide, high-density polyethylene, or polypropylene, as shown in FIGS. The base end of the rotating shaft 11 is integrally fixed to a surface (sliding surface) that comes into contact with the metal piece 3 in a state of being embedded. This rotating shaft 11 is
It is made of a material having a high melting point such as stainless steel from the viewpoint of fire resistance, and an insert reinforcing bracket 12 made of a steel material buried inside the handle fitting 2 is connected to the base buried portion of the rotating shaft 11. The rotating shaft 11 is firmly fixed and held.

On the other hand, as shown in detail in FIG. 4, the pedestal fitting 3 includes a pedestal main body 4 for supporting the handle fitting 2 substantially rotatably via a pivot shaft 11, and a fireproof specification. Pedestal auxiliary plate 9 installed on the back side of the pedestal main body 4, a stopper member 7 fitted and installed in a recess of the pedestal auxiliary plate 9, and a waveform for smoothly rotating the handle hardware 2. A washer 7, a fan-shaped rotator 8 fixed to the distal end of the rotation shaft 11 of the handle hardware 2, and restricting the rotation range of the handle hardware 2 by abutment against a stopper member 7; Back cover 9 to close the back side opening
And countersunk screws 13, 13 for attaching the back cover 9 to the pedestal main body 4, and screw covers 10A, 10B attached to both sides of the pedestal main body 4, respectively.

The pedestal body 4 is a member made of a resin such as polypropylene or polyamide. A rotating seat 4A for the handle hardware 2 is formed at the center of the pedestal body 4 so as to protrude toward the upper surface, and on both sides thereof. Screw mounting seats 4B and 4C for fixing the main base metal fitting 3 to the window frame 30 are formed at a step position relatively lower than the rotary seat 4A. The rotary seat 4A is formed with a shaft insertion hole 4a through which the rotary shaft 11 fixed to the handle hardware 2 passes. On the other hand, the screw mounting seats 4B and 4C have fixed screw mounting holes 4b. , 4c and protruding female screw holes 4d, 4e for projecting to the rear side are formed respectively, and claw engaging holes 4f, 4f... For attaching the screw covers 10A, 10B are respectively formed at four corners. Is formed.

As shown in FIG. 5, on the back side of the pedestal main body 4, the pedestal auxiliary plate 5 for attaching the pedestal auxiliary plate 5 and the back cover 9 is provided at the corresponding position of the screw mounting seats 4B and 4C. And digging seats 4h, 4 equivalent to the thickness of back cover 9
i is formed, and a concave portion 4 deeper than the dug-out seats 4h and 4i is provided at a position corresponding to the rotary seat 4A.
g is formed. The pedestal body 4 is made of a resin such as polypropylene or polyamide in this example, but may be made by die casting.

A pedestal auxiliary plate 9 provided on the back side of the pedestal main body 4 and made of a steel material such as stainless steel has a hat-shaped cross-section, and has a central protruding step which is fitted into the recess 4g of the pedestal main body 4 at the center. 5A, and has seat plate portions 5B, 5C fitted on the dug seat portions 4h, 4i on both sides thereof. The center protruding step 5A has a shaft insertion hole 5a through which the rotating shaft 11 penetrates, and protrusions 6d, 6 of the stopper member 6.
A fixing hole 5f into which the seat plate 5d is fitted is formed.
B and 5C are provided with fixing screw mounting holes 5b and 5c and mounting position regulating holes 5d and 5e respectively fitted to protruding female screw holes 4d and 4e for mounting on the back of the pedestal main body 4 formed on the back side of the base body 4. Have been.

On the other hand, the center protruding step 5 of the pedestal auxiliary plate 9
The stopper member 6 fitted and installed in the A is provided with a shaft insertion hole 6c through which the rotating shaft 11 is inserted substantially at the center of the stopper body 6a.
Are formed on the rim of the pedestal auxiliary plate 4, and projections 6d and 6d are formed in the mounting position regulating holes 5d and 5e, while the pivots are formed on the side edges of the opposite surface. A rotation regulating step 6b with which the child 8 abuts is formed.

The rotary member 8 is integrally formed with a fan-shaped rotary abutment plate 8 on the outer periphery of a shaft insertion portion 8b having a square hole 8a.
c is a member on which the rotating shaft 1 of the handle hardware 2 is formed.
As shown in FIG. 6, the end surfaces 8d and 8e of the rotation abutment plate 8c are fixed to the stopper at the locking rotation position and the unlock rotation position of the handle hardware 2 as shown in FIG. It abuts against the rotation restricting step 6 b of the member 6 to restrict the rotation range of the handle hardware 2.

In assembling, the pedestal auxiliary plate 5 is mounted on the back side of the pedestal main body 4, and the stopper member 6 is fitted and installed on the back side of the center protruding step 5A of the pedestal auxiliary plate 5; The rotating shaft 11 is passed through the shaft insertion holes 4a, 5a, 6c formed in the pedestal main body 4, the pedestal auxiliary plate 5, and the stopper member 6, and the rotating shaft 11 is interposed therebetween with the wave washer 7 interposed therebetween. 11 through the rectangular hole 8a of the rotor 8
The handle metal 2 is connected to the pedestal metal 3 by caulking the protruding portion of the square shaft portion 11a.

Next, the back cover 9 is mounted so as to cover the back side opening of the pedestal main body 4, and countersunk screws 13, 4 e are formed on the female screw holes 4 d and 4 e for mounting the back lid formed on the pedestal main body 4 from the outside.
13 is screwed in to complete the assembly.

In mounting the cam latch handle 1 to the window frame 30, as shown in FIG. 2, the fixing screw mounting holes 4b and 4c of the pedestal body 4 and the fixing screw mounting holes 5b and 5c of the pedestal auxiliary plate 5 are provided. Fixing screw 14, which penetrates both
14, the fixing screw 1
Screw covers 10A and 10B are attached to the screw attaching seats 4B and 4C to which the screws 4 and 14 are attached. Installation is
4 provided at the lower end of the screw covers 10A and 10B.
The two mounting claws 10a, 10b are connected to the screw mounting seat 4B,
4C, the mounting claws 10a, 10b are automatically engaged with the back side edges of the claw engaging holes 4f, 4f. 10A and 10B are held so as not to fall off.

[0022]

As described above in detail, according to the present invention, the cam latch handle is made to have a fireproof specification, so that even if a fire occurs, the locked state is maintained.

[Brief description of the drawings]

FIG. 1 is a front view of a cam latch handle 1 according to the present invention.

FIG. 2 is a view taken along the line II-II in FIG.

FIG. 3 is a view taken along line III-III.

FIG. 4 is an exploded view thereof.

FIG. 5 is a vertical cross-sectional view of the pedestal main body 4 (viewed along the line VV in FIG. 4).

6 is an operation state diagram of the rotation stopper 12. FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Cam latch handle, 2 ... Handle hardware, 3 ... Pedestal hardware, 4 ... Pedestal body, 5 ... Pedestal auxiliary plate, 6 ... Stopper member, 7 ... Wave washer, 8 ... Rotator, 9 ... Back cover, 1
0A / 10B: Screw cover, 11: Rotating shaft, 12: Insert reinforcing bracket, 13: Countersunk screw, 14: Fixed screw

Claims (3)

[Claims] A pedestal fitting fixed to a window frame and a handle fitting pivotally operated within a predetermined angle range for applying / unlocking a shoji are pivotally fixed to the handle fitting side. In a cam latch handle connected to each other via a shaft, a pedestal reinforcing plate made of a steel material is disposed on the back side of a pedestal body made of a resin or die-cast, and a rotation axis of the handle hardware is made of a steel material, On the handle hardware side, a base end of the rotating shaft is embedded in a handle hardware made of resin, and an insert reinforcement made of a steel material is embedded in the base end portion of the rotating shaft, which is embedded inside the handle hardware. The rotating shaft is fixedly held by connecting metal fittings, and the rotating shaft penetrates at least both the pedestal main body and the pedestal reinforcing plate, and is held undetachably on the back side. Refractory cam latch handle that. 2. A concave portion is formed in a range including a rotating shaft penetrating portion on the back side of the pedestal main body, and the concave and convex portions of the pedestal reinforcing plate bent into a hat shape are fitted to each other. A stopper member for restricting the rotation range of the handle hardware by abutment is fitted and installed in a recess formed on the back side of the pedestal reinforcing plate, and is locked and rotated with respect to the rotation axis of the handle hardware. 2. The fireproof cam latch handle according to claim 1, wherein a rotating member which abuts against a rotation regulating step formed on the stopper member when moving and unlocking is respectively fixed. 3. The refractory cam according to claim 1, wherein the base metal fitting has a mounting hole through which a fixing screw for a window frame is commonly inserted in each of the base main body and the base auxiliary plate. Latch handle.