JP4181714B2 - Window guard arm device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a guard arm mechanism (hereinafter, simply referred to as a guard arm mechanism) of a window such as a normal window supported by a hinge, a vertical sliding window, or a rake window, and in particular, can fix the guard arm when not in operation. The present invention also relates to a novel guard arm device that is compact.
[0002]
[Prior art]
The guard arm device normally connects the door and door frame at the door opening with a member called guard arm, and this guard arm opens the door more than a certain degree like a conventional door chain. The homeowner can safely receive the mail or confirm the visitor.
[0003]
There are several types of this guard arm device. For example, as in the guard arm device described in Japanese Utility Model Publication No. 3-39585, a lock case provided on the free side edge of the door during operation is used. The lock rod is protruded by one step, and the constricted portion at the tip thereof is engaged with the engagement hole opened at the lower end of the restricting member rotatably supported on the door frame.
[0004]
However, this type of guard arm device cannot be applied to a window, since a normal window is not provided with a lock case.
[0005]
On the other hand, for example, a guard arm device described in Japanese Utility Model Publication No. 7-11270 has a hook-like locking portion projecting from the other end of a guard arm supported so as to swing and rotate at one end. At the time of operation of the device, the other end of the guard arm is swung out toward the strike having the long hole opened, and the locking portion is operated to engage with the long hole.
[0006]
This type of guard arm device can be employed as a guard arm device for a window because the member that drives the guard arm during operation does not have to be the lock of the lock case.
[0007]
[Problems to be solved by the invention]
However, in this type of guard arm device, the stroke of the other end of the guard arm becomes large because the flange of the other end of the guard arm must be pushed through the slot to the back of the strike when operating. It is difficult to incorporate the guard arm device in a narrow space between the frame and the shoji.
[0008]
Further, since the guard arm is exposed when it is not in operation, there are various inconveniences such as the possibility that the guard arm is pulled out and mischievous.
[0009]
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a guard arm device that solves the above-described inconveniences, operates reliably even when the stroke of the other end of the guard arm is shortened, and can be secured when the guard arm is not operating. It is said.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a box-shaped machine frame mounted on one of the inner surface of the window frame and the free edge of the shoji that faces the free edge of the shoji when the window is closed, and the other. and a receiving member that is, the support shaft planted on the back side of the proximal end of the elongated plate-like guard arm, the machine frame in a state of being loosely fitted to the shaft hole opened in the bottom plate of the machine frame By inserting and pivoting so that it can be rotated and tilted, the guard arm can be rotated and the free end of the guard arm can be moved in the direction of finding the shoji. , Leaving the flange around the periphery, planting the engaging pin protruding to the receiving member side, on the other hand, in the receiving member, the hole that allows the engagement pin to go in and out, and extends in the vertical direction, A guide hole is formed in which a long hole that is slidably engaged with the engagement pin is formed, and the guide member is overlapped with the guide hole. The eaves member that covers the open end edge of the long hole on the side that does not interfere with the guard arm is integrated with the receiving member so as to maintain a gap that can receive the flange of the free end of the guard arm between the receiving member and the receiving member. On the other hand, a locking cam is integrally connected to the inner end of the above-mentioned support shaft with a guard arm attached to the outer end thereof in the machine frame, and the support shaft between this locking cam and the bottom plate of the machine frame is connected. The guard arm is urged in the direction to join the outer surface of the bottom plate of the machine frame by the elasticity of the compression coil spring that is fitted, and is further guided on the outer surface of the bottom plate of the machine frame so as to be movable in the vertical direction. A slider cam with an inclined surface that enters between the base end and the outer surface of the machine frame is provided, and the central part is rotatably supported by the bottom plate of the machine frame and rotates in a plane parallel to the bottom plate of the machine frame. capable provided guided switching lever, the inner end of the switching lever The actuating portion is inserted through the side of the machine frame Toe engaged entering into the machine frame by Rutotomoni, the drive pin inner end is implanted in the actuating portion is passed through the bottom plate opening of the machine frame is linked to the slider cam, On the other hand, turning the switching lever to one side puts the guard arm device in an operating state, and turning the switching lever to the other side puts the guard arm device in an inoperative state. , The sloped surface of the slider cam is removed from between the base end of the guard arm and the outer surface of the bottom plate of the machine frame so that the free end of the guard arm can be engaged with the receiving member and the switching lever is operated. parts are prevented from interfering with the movement locus of the locking cam, also the bottom plate outer surface of the switching lever is rotated to the guard arm device inoperative side, proximal end of the guard arm an inclined surface of the slider cams and machine frame When the free end of the guard arm is moved away from the receiving member by being inserted between the two, the operating portion of the switching lever interferes with the movement locus of the locking cam.
[0011]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
In FIG. 1, reference numeral 1 denotes a sliding sliding door window, reference numeral 2 denotes a window frame, and the free edge of the sliding door 1 moves in the direction of arrow A when the sliding door is opened.
[0012]
When the window is closed, an elongated plate-like guard arm 4 (see FIGS. 2 to 4) is pivotally attached to the inner surface of the window frame 2 facing the free edge of the shoji 1 through the machine frame 3. Yes.
[0013]
As shown in FIGS. 2 and 3, the machine casing 3 in the illustrated embodiment is a vertically long and shallow box-like body whose rear surface (left side in FIG. 3) is open and whose side surface (left side in FIG. 2) is cut out. By attaching an unnumbered attachment piece integrally formed on the upper and lower opening edges to each other, the rear opening is fixed to the inner surface of the window frame 2.
[0014]
On the other hand, as shown in FIG. 3, a support shaft 5 in a direction orthogonal to the inner surface is fixed to the rear surface of the base end (upper end) of the guard arm 4, that is, the inner surface side of the window frame 2 by caulking, for example. The support shaft 5 is inserted through a clearance hole 7 (see FIGS. 2 and 3) of a slider cam 6 to be described later, and is further opened to the bottom surface (the right side surface in FIG. 3) of the machine frame 3 without numbering. Is loosely fitted into the internal space of the machine casing 3.
[0015]
A fan-shaped locking cam 8 (see FIG. 4) is also fixed to the inner end (left end in FIG. 3) of the support shaft 5 by caulking.
[0016]
Furthermore, an arm spring 9 (see FIG. 3) as a compression coil spring is wound around the support shaft 5 between the locking cam 8 and the bottom surface of the machine casing 3.
[0017]
With the above-described configuration, the guard arm 4 is supported so as to be rotatable around the support shaft 5 and the support shaft 5 is loosely fitted with the support shaft hole on the bottom surface of the machine frame. The lower end in FIG. 3 can move in the direction in which the shoji 1 is found (the left-right direction in FIG. 3).
[0018]
On the other hand, on the surface of the guard arm 4 facing the shoji 1 at the free end, as shown in FIG. 2 and FIG.
[0019]
Corresponding to the engagement pin 12, as shown in FIG. 1, a vertically long plate-shaped receiving member 13 is fixed to the free end edge of the shoji 1 by screwing the upper and lower ends.
[0020]
As shown in FIG. 5, the receiving member 13 has a bottom hole 14 that allows the engagement pin 12 to enter and exit at the lower end, and a length that extends in the vertical direction and engages the engagement pin 12 so as to be slidable. A guide hole 16 that is continuous with the hole 15 is opened.
[0021]
In the illustrated embodiment, the elongated hole 15 is slightly inclined with respect to the vertical direction, but this inclination is not an essential configuration of the present invention.
[0022]
As shown in FIGS. 1, 5, and 6, the central portion where the guide hole 16 of the receiving member 13 is opened is slightly lifted from the free edge of the shoji, and the engagement pin 12 and the shoji 1 are brought into contact with each other. In order to prevent this, stepped portions are formed at both ends of the receiving member 13.
[0023]
Furthermore, in the illustrated embodiment, the eaves member 17 is integrally coupled to the receiving member 13 in such a manner that one side edge of the receiving member 13 is extended sideways and folded back to the center of the receiving member 13. ing.
[0024]
This eaves member 17 maintains a gap that can receive the guard arm flange 11 between the eaves member 13 and the opening edge of the long hole that does not interfere with the guard arm 4 (external space in FIG. 1). Side opening edge).
[0025]
On the other hand, as shown in FIGS. 2 and 3, the slider cam 6 is supported and guided on the surface of the machine frame 3, that is, the outer surface of the bottom surface of the machine frame 3 so as to be movable in the vertical direction.
[0026]
As is apparent from FIG. 3, the slider cam 6 is a plate-like member having a central portion bent into a mountain shape with a low cross section, and is engaged with the support shaft 5 of the guard arm 4 and the vertically elongated escape hole 7; In addition, the flanged guide pin 18 that is caulked to the surface of the machine frame 3 and the vertically long guide hole 19 that opens at the top of the slider cam 6 are supported so as to be movable in the vertical direction.
[0027]
Then, the lower inclined surface of the slider cam 6 which is not numbered selectively enters between the base end portion of the guard arm 4 and the outer surface of the machine frame, and moves the free end of the guard arm 4 in the direction in which the shoji is found.
[0028]
In order to switch the slider cam 6 in the vertical direction, as shown in FIGS. 1 to 4, a switching lever 21 is swingably provided on the machine frame 3.
[0029]
As shown in FIG. 4, the switching lever 21 includes a fan-shaped operating portion 22 formed at an inner end of the machine casing 3 and a driving portion 24 covered with a lever cover 23. The end portion is supported on the lever shaft 25 (see FIG. 3) so as to be swingable.
[0030]
Further, as shown in FIG. 4, a drive pin 26 projecting toward the shoji side is integrally implanted in the operating portion 22 of the switching lever, and the tip of the drive pin 26 is formed on the bottom surface of the machine frame 3. As shown in FIG. 2, it slidably engages with a horizontally long engagement hole 27 that opens in the slider cam 6.
[0031]
When the guard arm 4 is in the standby position shown in FIG. 4, the upper end edge of the locking cam 8 integrated with the guard arm 4 is formed in an arc shape around the lever shaft 25, and the switching lever is switched to the non-operating side. Sometimes (see FIG. 7), the actuating portion 22 does not interfere with the locking cam 8.
[0032]
On the other hand, when the guard arm device is in an inoperative state as shown in FIG. 7, the locking cam 8 integral with the guard arm 4 is restrained by the inner surface of the side plate of the machine frame 3 and the operating portion 22. Will be fixed to the machine frame.
[0033]
On the other hand, on the inner upper side of the machine casing 3, a spacer 28 having a rectangular parallelepiped corner cut out in a predetermined shape (see FIG. 4) is fitted inside the machine casing 3 while engaging in shape engagement, It is fixed by the lever shaft 25 (see FIG. 3).
[0034]
The material of the spacer 28 in the illustrated embodiment is an elastic synthetic resin. As shown in FIG. 4, an arc-shaped pin groove 29 that engages with the drive pin 26 of the switching lever, and a skirt adjacent to the pin groove 29. And an angled spring groove 31 is formed.
[0035]
Since the central portion of the arcuate body part left between the pin groove 29 and the spring groove 31 interferes with the movement locus of the drive pin 26, the click is performed when the arcuate body part switching lever is rotated. It becomes the click spring 32 that gives a feeling.
[0036]
1, 2, and 4, reference numeral 33 indicates a switching lever seat mounted on the window frame 2. The switching lever seat 33 covers a mechanism in the machine casing 3 and is a kind for improving the appearance. It is a decorative member.
[0037]
In the guard arm device having the guard arm mechanism according to the present invention configured as described above, when the switching lever driving portion 24 is raised as shown by a chain line in FIG. 4, the slider cam 6 is lowered to a position indicated by a chain line in FIG.
[0038]
At this time, since the cross-sectional chevron of the slider cam 6 pushes up the base end of the guard arm 4 from the back side, the free end of the guard arm 4 rotates clockwise in FIG. 3 against the elasticity of the arm spring 9.
[0039]
As shown in FIG. 1, the engagement pin 12 takes a standby position in which it is separated from the shoji-side receiving member 13, and the guard arm device is in an inoperative state.
[0040]
At this time, as shown in FIG. 7, since the locking cam 8 is restrained by the switching lever operating portion 22 and the inner surface of the side plate of the machine frame, the guard arm 4 is fixed to the machine frame 3 and pulled out to be mischievous. Can be prevented.
[0041]
In order to operate this guard arm device, as shown in FIGS. 2 to 4, the drive unit 24 of the switching lever is pushed down, and the slider cam 6 is placed at the lowered position shown by the solid line in FIG.
[0042]
Then, since no external force acts on the guard arm 4, the base end of the guard arm 4 is urged by the elasticity of the arm spring 9 in a direction to join the surface of the machine frame 3 with the flat portion of the slider cam 6 interposed therebetween. The engagement pin 12 at the free end of the guard arm 4 moves to the right in FIG. 3 and is engaged with the hole 14 of the receiving member 13.
[0043]
When the shoji 1 is opened in this state, in other words, when the free end of the shoji 1 is raised in FIG. 1, the receiving member 13 moves to the right in FIG. 5, and the engagement pin 12 of the guard arm is engaged with the elongated hole. At the same time, the flange 11 of the guard arm enters the gap between the receiving member 13 and the eaves member 17.
[0044]
When the shoji is further opened, the engagement pin 12 of the guard arm slides through the long hole 15 and pulls the free end of the guard arm 4, so that the shoji 1 is connected to the window frame 2 via the guard arm 4. The opening of the shoji is regulated by opening the engaging pin 12 to the upper end of the guide hole 16.
[0045]
During the operation of the guard arm mechanism described above, the movement to remove the engaging pin 12 from the guide hole 16 is prevented by the engagement between the eaves part 11 and the eaves member 17, while the eaves part 11 is removed from the eaves member 17. The movement to be removed from the gap between the receiving member 13 and the receiving member 13 is prevented by the engagement between the engaging pin 12 and the guide hole 16.
[0046]
When the shoji 1 is closed, the engagement pin 12 returns to the punch hole 14. At this time, when the switching lever is raised, the free end of the guard arm 4 moves away from the shoji and the guard arm device returns to the standby state.
[0047]
FIGS. 8 and 9 show a modified embodiment of the present invention. In this embodiment, the inclined surface for driving the guard arm of the slider cam 6 is not bent into a mountain shape, for example, below the thick plate made of synthetic resin. Further, an inclined surface 6a (see FIG. 8) and a thin plate portion 6b (see FIG. 9) are connected to each other, and the function thereof is apparent from FIGS.
[0048]
【The invention's effect】
As is apparent from the above description, the present invention is such that the engagement pin of a normal short cylindrical body having no flange or ridge planted at the free end of the guard arm is engaged with the guide hole of the member, Since the movement of trying to pull out the guide hole from the guide hole is blocked by the eaves member, the movement of the free end of the guard arm when operating the guard arm device can be made smaller than the conventional one and limited The guard arm device can be incorporated in the space between the window frame and the shoji, and the structure of the guard arm device can be simplified.
[0049]
In addition, the locking arm integral with the guard arm is restrained by the operating part of the switching lever when the guard arm device is not in operation, and the guard arm is fixed to the machine frame, preventing the guard arm from being pulled out and mischievous. Various effects can be achieved.
[Brief description of the drawings]
FIG. 1 is a plan view of a guard arm device according to an embodiment of the present invention.
FIG. 2 is a front view thereof.
FIG. 3 is a longitudinal sectional view thereof.
FIG. 4 is a rear view showing a case where the guard arm device is in an operating state.
FIG. 5 is a rear view of the receiving member.
FIG. 6 is a side view of the receiving member as seen from the external space side.
FIG. 7 is a rear view of the guard arm device and shows a case where the guard arm device is in an inoperative state.
FIG. 8 is a longitudinal sectional view of a guard arm device according to a modified embodiment of the present invention, showing a case where the guard arm device is in an operating state.
FIG. 9 is a longitudinal sectional view of a guard arm device according to a modified embodiment of the present invention, showing a case where the guard arm device is in an inoperative state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Shoji 2 Window frame 3 Machine frame 4 Guard arm 5 Support shaft 6 Slider cam 6a Inclined surface 7 Relief hole 8 Locking cam 9 Arm spring 11 Hook part 12 Engagement pin 13 Receiving member 14 Extraction hole 15 Long hole 16 Guide hole 17 Eave Member 21 Switching lever 22 Actuator 25 Drive shaft

Claims (1)

When the window is closed, it has a box-like machine frame attached to one of the inner surface of the window frame facing the free edge of the shoji and the free edge of the shoji, and a receiving member attached to the other, and is in the form of an elongated plate the support shaft that is planted on the back surface side of the base end of the guard arm is inserted to rotating move One tiltably pivoted on the machine frame in a state of being loosely fitted to the shaft hole opened in the bottom plate of the machine frame Thus, the guard arm is provided so that it can rotate freely and the free end of the guard arm can be moved in the direction of finding the shoji. On the other hand, the receiving member has a punch hole that allows the engagement pin to enter and exit, and a long hole that extends in the vertical direction and slidably engages with the engagement pin. And a guide hole that is connected to the receiving member so as to overlap with the receiving member and between the receiving member and Keeping a gap adapted to receive a flange portion of the free end of Doamu, the eaves member covering the opening edge portion of the side of the long hole that does not interfere with the guard arm integrally coupled to the other, mounting the guard arm to the outer end A locking cam is integrally coupled to the inner end of the support shaft in the machine frame, and a guard arm is formed by the elasticity of the compression coil spring fitted to the support shaft between the locking cam and the bottom plate of the machine frame. Is urged in the direction to join the outer surface of the base plate of the machine frame. provided slider cam having a surface, also it is rotatably supported a central portion on the bottom plate of the machine frame, a rotatably guided switching lever provided in the bottom plate parallel to the plane of the machine frame, the switching lever the actuating portion of the inner end is inserted through the side surface of the machine frame of the machine frame Toe engaged input
At the same time, the drive pin planted at the inner end of this operating part is inserted into the opening on the bottom plate of the machine frame and linked to the slider cam . On the other hand, the guard arm device is operated by rotating this switching lever to one side. If the guard arm device is placed in a non-operating state by turning it to the other state, and when the switching lever is turned to the guard arm device operating side, the inclined surface of the slider cam is set to the base end of the guard arm. And the outer surface of the bottom plate of the machine frame so that the free end of the guard arm can be engaged with the receiving member, and the operating portion of the switching lever is prevented from interfering with the movement locus of the locking cam. By rotating the switching lever to the guard arm device inactive side and inserting the inclined surface of the slider cam between the base end of the guard arm and the outer surface of the bottom plate of the machine frame, When is separated from the receiving end member, switching window of the guard arm mechanism actuating portion of the lever is characterized in that so as to interfere with the movement locus of the locking cam.

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