JP6301704B2 - Handle box and window opening and closing device - Google Patents

Description

  The present invention relates to a handle box or the like for a window opening / closing device.

  For example, in the window opening and closing apparatus described in Patent Document 1, a torque limiter mechanism that prevents an excessive rotational force from being transmitted from the handle to the winding drum is provided.

JP 2012-41780 A

  The torque limiter mechanism described in Patent Document 1 is a so-called mechanical torque limiter mechanism. That is, the torque limiter mechanism described in Patent Document 1 has a connecting portion provided in a plurality of recesses on the outer periphery, a spring for pushing the ball into the recesses, a torque limiting portion provided with radial holes into which springs are inserted, and the like. Configured.

  When the handle is rotated by the operator, the torque limiting portion rotates integrally with the handle, so that the connecting portion locked to the ball fitted in the recess rotates together with the torque limiting portion, The rotation is transmitted to the take-up drum.

  When the operating force of the handle increases, the ball is buried in the radial hole while compressing and deforming the spring, so that the locked state between the ball and the connecting portion is released, and the torque is transmitted from the torque limiting portion to the connecting portion. Blocked.

  For this reason, in invention of patent document 1, since a big force acts on a ball | bowl or a connection part (especially recessed part), there exists a high possibility that a connection part etc. will wear early and a malfunction will generate | occur | produce in a handle box.

  In view of the above points, an object of the present invention is to suppress the occurrence of problems caused by wear or the like in a handle box having a torque limiter function.

  In order to achieve the above object, the present invention is a handle box that opens and closes a shoji (5) that is displaceably assembled with respect to a window frame (3), and an operation for an operator to close the shoji (5). And the opening / closing mechanism (13) that displaces the shoji (5) in the closing direction by using the rotational force generated by the operation of the handle (10C). And an input part (16C) to which the rotational force generated by the operation of the handle part (10C) is input, and the rotational force is transmitted to the opening / closing mechanism (13) using the viscous resistance of the viscous fluid (16).

  Accordingly, in the present invention, when the rotational force due to the operation of the handle portion (10C) exceeds the rotational force that can be transmitted by the viscous resistance, slippage occurs in the fluid coupling (16), and the transmission of the rotational force is interrupted. The For this reason, it is possible to prevent an excessive rotational force from being transmitted from the handle portion (10C) to the opening / closing mechanism (13).

  Even if slippage occurs in the fluid coupling (16), the equipment constituting the fluid coupling (16) is hardly worn by the slippage, so that the occurrence of problems caused by wear or the like is suppressed. it can.

  Incidentally, the reference numerals in parentheses for each of the above means are examples showing the correspondence with the specific means described in the embodiments described later, and the present invention is indicated by the reference numerals in the parentheses of the above respective means. It is not limited to specific means.

It is a perspective view of the window opening and closing apparatus concerning the embodiment of the present invention. 1 is an exploded perspective view of a handle box 10 according to a first embodiment of the present invention. 1 is a front view of a handle box 10 according to an embodiment of the present invention. It is a disassembled perspective view of the clutch mechanism 15 which concerns on 1st Embodiment of this invention. It is explanatory drawing of the fluid coupling 16 which concerns on embodiment of this invention. (A) is a front view of the hammer plate 18A. (B) is a front view of the striking plate 18B. It is a disassembled perspective view of the handle box 10 which concerns on 2nd Embodiment of this invention. It is a disassembled perspective view of the clutch mechanism 15 which concerns on 2nd Embodiment of this invention.

  The “embodiment of the invention” described below shows an example of the embodiment. In other words, the invention specific items described in the claims are not limited to the specific means and structures shown in the following embodiments.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the arrow etc. which show the direction attached | subjected to each figure are described in order to make it easy to understand the relationship between each figure. The present invention is not limited to the directions given in the drawings. At least one member or part described with at least a reference numeral is provided, except where “plurality”, “two or more”, and the like are omitted.

(First embodiment)
In this embodiment, the handle box according to the present invention is applied to a window opening and closing device 1 such as a smoke exhaust window. As shown in FIG. 1, the smoke exhaust window is a window opening / closing device 1 having a window frame 3 and a shoji 5 that is swingably assembled to the window frame 3.

  Incidentally, the window opening and closing device 1 shown in FIG. 1 is an “externally falling smoke exhaust window”. The window opening / closing device 1 has a hinge mechanism (not shown) at the bottom of the window frame 3 and swings and displaces so that the shoji 5 falls down outside the building (not shown). The hinge mechanism is a component that connects the window frame 3 and the shoji 5 so as to be swingable.

1. Window Opening / Closing Device As shown in FIG. 1, the window frame 3 and the shoji 5 of the window opening / closing device 1 according to the present embodiment are configured in a rectangular frame shape made of a light metal such as aluminum. The window frame 3 is fixed to the opening edge of the building by a fastening member such as a screw. A plate-like member such as a glass plate is assembled to the frame of the shoji 5.

  When the window opening / closing device 1 is closed, the opening of the building is closed. On the other hand, when the window opening / closing device 1 is opened (the state shown in FIG. 1), the shoji 5 is oscillated and displaced with respect to the window frame 3, and the opening of the building is opened.

  The window opening / closing device 1 is provided with at least one stay damper 7 that applies a force (hereinafter referred to as a separating force) for separating the shoji 5 from the window frame 3 to the shoji 5. The stay damper 7 includes a cylindrical cylinder and a rod that protrudes and protrudes from the cylinder.

  A high-pressure gas that generates a separating force is sealed in the cylinder. One end side of the stay damper 7 in the longitudinal direction is rotatably connected to the window frame 3. On the other hand, the other end in the longitudinal direction of the stay damper 7 is rotatably connected to the shoji 5. For this reason, the stay damper 7 always applies a separation force to the shoji 5.

  The auxiliary opening machine 9 applies the separating force to the shoji 5 when the tilt angle of the shoji 5 is small and the separating force of the stay damper 7 is small. The tilt angle of the shoji 5 refers to the swing angle between the shoji 5 and the window frame 3. That is, the tilt angle of the shoji 5 when the window opening / closing device 1 is closed is 0 degree. When the shoji 5 swings and the window opening / closing device 1 opens, the tilt angle of the shoji 5 increases accordingly.

  The auxiliary opening machine 9 includes a swing arm 9A and an elastic member such as a torsion coil spring (not shown). And the torsion coil spring is comprised so that the deformation amount may become large, so that the fall angle of the shoji 5 becomes small. For this reason, the auxiliary opening machine 9 applies a larger separating force to the shoji 5 as the tilt angle of the shoji 5 is smaller.

2. 2. Handle Box 2.1 Overview of Handle Box The handle box 10 is an operator for operating the window opening and closing device 1 as shown in FIG. That is, as shown in FIG. 2, the handle box 10 houses the winding mechanism 13, the clutch mechanism 15, and the winding mechanism 13 and the clutch mechanism 15 that winds the wire 5 </ b> A (see FIG. 1) connected to the shoji 5. Storage box 11 and the like.

  The winding mechanism 13 is an opening / closing mechanism having a winding drum (not shown) for winding the wire 5A, a ratchet mechanism (not shown) for controlling the rotatable direction of the winding drum, and the like. The ratchet mechanism controls the rotatable direction of the take-up drum in accordance with the operation status of an open button 10B and take-up handle 10C described later.

  The release button 10B and the take-up handle 10C are provided on the front cover 10A of the handle box 10 as shown in FIG. Note that the front cover 10 </ b> A is a lid that is positioned in front of the handle box 10 and closes the front side of the storage box 11.

  The release button 10 </ b> B is an operation unit for enabling the winding drum to rotate in a direction to open the shoji 5. That is, when the release button 10B is pressed, the window opening / closing device 1 is opened by the separating force of the stay damper 7 or the like. The winding handle 10C is an operation unit that rotates the winding drum in a direction in which the wire 5A is wound.

  A connecting portion 10D is provided on the lower end side of the winding handle 10C (the rough shaded portion in FIG. 3). The connecting portion 10D rotatably connects the winding handle 10C to the front cover 10A, and allows the winding handle 10C to swing with respect to the front cover 10A.

  When the release button 10B is pressed while the winding handle 10C is housed in the front cover 10A, the winding handle 10C falls to the front side and can be rotated. The connecting portion 10D is connected to the take-up drum via a one-way clutch (not shown) built in the clutch mechanism 15 and the take-up mechanism 13.

  The one-way clutch interrupts transmission of the rotational force from the winding drum to the winding handle 10C, and transmits the rotational force from the winding handle 10C to the winding drum. For this reason, the winding handle 10C does not rotate when the wire 5A wound around the winding drum is opened.

  When the operator rotates the winding handle 10C in the direction to wind the wire 5A so as to close the shoji 5, the ratchet mechanism allows the winding drum to rotate in the direction to wind the wire 5A. And the rotation of the winding drum in the opposite direction is restricted.

2.2 Configuration of clutch mechanism <Fluid coupling>
As shown in FIG. 4, the clutch mechanism 15 includes a fluid coupling (viscous coupling) 16 and the like. The fluid coupling 16 is accommodated in the handle box 10 while being sandwiched between the brackets 19A and 19B. The brackets 19A and 19B are fastened to each other by screws 19C as shown in FIG.

  The fluid coupling 16 is a power transmission mechanism that transmits rotational force using the viscous resistance of a viscous fluid such as oil. That is, the rotational force generated by operating the winding handle 10 </ b> C is transmitted to the winding mechanism 13 through the fluid coupling 16.

  As shown in FIG. 5, the fluid coupling 16 includes an output shaft 16A, a casing 16B, an input portion 16C, a rotating body 16D, and the like. The casing 16B is provided with an output shaft 16A in which a viscous fluid is sealed and rotates integrally with the casing 16B.

  The output shaft 16 </ b> A outputs a rotational force to the winding mechanism 13. The input unit 16C is a part to which the rotational force generated by operating the winding handle 10C is input. The connecting portion 10D is connected to the input portion 16C via the connecting shaft 17.

  The rotating body 16D is rotatably housed in the casing 16B, and rotates in the viscous fluid in response to the rotational force input to the input unit 16C. When the rotating body 16D rotates, a shear resistance force is generated in the viscous fluid existing in the gap between the rotating body 16D and the casing 16B.

  For this reason, since casing 16B rotates with rotating body 16D, the rotational force input into the input part 16C is output to the output shaft 16A. When the load (rotational resistance) on the output shaft 16A side exceeds the rotational force generated by the shear resistance force, a large slip occurs between the rotating body 16D and the casing 16B and the viscous fluid. Transmission is interrupted.

Hereinafter, the “function for interrupting transmission of rotational force when the rotational force generated by the shear resistance force is exceeded, that is, when the transmittable rotational force is exceeded” will be referred to as a torque limiter function.
<Tapping mechanism>
The tapping mechanism 18 shown in FIG. 4 generates a warning sound to notify the operator when the winding handle 10C is further rotated while the transmission of the rotational force is blocked by the fluid coupling 16. Mechanism.

  That is, the tapping mechanism 18 according to the present embodiment includes a hammer plate 18A that rotates integrally with the winding handle 10C, a striking plate 18B that rotates integrally with the casing 16B, and the like.

  As shown in FIG. 6A, the hammer plate 18A is a disk-like member, and has a plurality of hammer portions 18C on the outer peripheral side thereof. Each hammer portion 18C has an arm portion 18D and a hammer 18E.

  The arm portion 18D is an elastically deformable cantilever member that extends in an arc shape. The hammer 18E is a beating portion provided at the tip of the arm portion 18D. In the present embodiment, the arm portion 18D, the hammer 18E, and the like are integrally formed of resin.

  As shown in FIG. 6 (b), the striking plate 18B constitutes a cam for displacing the hammer 18E, and is provided with a plurality of striking portions 18F to be beaten by the hammer portion 18C (hammer 18E).

  The striking portion 18F according to the present embodiment is configured by triangular protrusions provided on the outer periphery of the striking plate 18B. The striking plate 18B is integrally formed of metal (for example, SPCC or SECC) together with the striking portion 18F.

  When the winding handle 10C is further rotated in a state where the transmission of the rotational force is blocked by the fluid coupling 16, the hammer plate 18A rotates with respect to the striking plate 18B. For this reason, the hammer portion 18C (hammer 18E) continuously strikes the striking plate 18B, so that a striking sound such as “tick” is generated.

3. Features of the status display device according to the present embodiment In the present embodiment, when the rotational force due to the operation of the winding handle 10C exceeds the rotational force that can be transmitted by viscous resistance, slippage occurs in the fluid coupling 16 and rotation occurs. Power transmission is interrupted. For this reason, it is possible to prevent an excessive rotational force from being transmitted from the winding handle 10 </ b> C to the winding mechanism 13.

  And even if a slip occurs in the fluid coupling 16, since the equipment which comprises the fluid coupling 16 is hardly worn by this slip, it can suppress that the malfunction caused by wear etc. generate | occur | produces.

  A beating sound is generated when the winding handle 10C is further rotated in a state in which the transmission of the rotational force is blocked by the fluid coupling 16, so that it is possible to notify the operator to that effect.

(Second Embodiment)
In this embodiment, a limiter function stop mechanism for stopping the torque limiter function of the fluid coupling 16 is provided.

  That is, the limiter function stopping mechanism according to the present embodiment is configured to have a stopper 19D or the like that is locked to the fluid coupling 16 side, as shown in FIG. As shown in FIG. 8, the stopper 19 </ b> D is a rod-shaped member that passes through the through hole 19 </ b> E provided in the bracket 19 </ b> B and reaches the fluid coupling 16 side. Incidentally, the stopper 19D according to the present embodiment is constituted by a countersunk screw or the like.

  The pair of through-holes 19E are elongated through-holes extending in an arc shape around the rotation center of the winding handle 10C. The hammer plate 18A is provided with a plurality of through holes 19G through which the stopper 19D can pass. The striking plate 18 </ b> B integrated with the fluid coupling 16 is provided with a locked portion 19 </ b> F configured by a recess or a through hole.

  Then, the stopper 19D extends through the through hole 19E and the through hole 19G to the locked portion 19F, and the tip side thereof is hooked and locked by the locked portion 19F. Therefore, the hammer plate 18A and the striking plate 18B rotate integrally.

  Accordingly, the rotational force input via the take-up handle 10C is transmitted through the path of the rotary shaft 17, the hammer plate 18A, the striking plate 18B, the casing 16B of the fluid coupling 16, and the output shaft 16A, so that the torque limiter function is stopped. To do.

  The stop of the torque limiter function is used when performing maintenance of the window opening and closing device 1 and during installation work. That is, since it is necessary to confirm the state that the window opening and closing device 1 is completely closed at the time of maintenance or the like, if the torque limiter function is activated, the confirmation operation or the like may not be performed properly. It is.

  In the present embodiment, the plurality of through holes 19G are provided in the hammer plate 18A at unequal intervals in the circumferential direction. This is because the stopper 19D can be passed through the through hole 19E and the through hole 19G without removing the bracket 19B.

  In the present embodiment, the limiter function stop mechanism is configured using the hammer plate 18A and the striking plate 18B. However, the present embodiment is not limited to this, and dedicated components that constitute the limiter function stop mechanism are provided. It may be provided.

(Other embodiments)
Although the window opening and closing device according to the above-described embodiment is a wire type, the present invention is not limited to this, and can be applied to a window opening and closing device using a geared cable.

  In the above-described embodiment, the hammer plate 18A rotates integrally with the winding handle 10C and the striking plate 18B rotates integrally with the casing 16B. However, the present invention is not limited to this. The hammer plate 18A may rotate integrally with the casing 16B, and the striking plate 18B may rotate integrally with the winding handle 10C.

In the above-described embodiment, the tapping mechanism 18 is provided. However, the present invention is not limited to this, and the tapping mechanism 18 may be eliminated.
In the fluid coupling 16 according to the above-described embodiment, the output shaft 16A is provided on the casing 16B side and the input portion 16C is provided on the rotating body 16D side. However, the present invention is not limited to this, and the rotation The output shaft 16A may be provided on the body 16D side, and the input unit 16C may be provided on the casing 16B side.

  Further, the present invention is not limited to the above-described embodiment as long as it matches the gist of the invention described in the claims.

DESCRIPTION OF SYMBOLS 1 ... Window opening and closing device 3 ... Window frame 5 ... Shoji 5A ... Wire 7 ... Stay damper 9 ... Auxiliary opening machine 9A ... Swing arm 10 ... Handle box 10B ... Release button 10C ... Winding handle 10A ... Front cover 10D ... Connection part DESCRIPTION OF SYMBOLS 11 ... Storage box 13 ... Winding mechanism 15 ... Clutch mechanism 16 ... Fluid coupling 16A ... Output shaft 16B ... Casing 16C ... Input part 16D ... Rotating body 17 ... Shaft 18 ... Tapping mechanism 18A ... Hammer plate 18C ... Hammer part 18D ... Arm Part 18E ... Hammer 18B ... Striking plate 18F ... Striking part

Claims (3)

A handle box that opens and closes a shoji that is displaceably mounted on a window frame,
A handle portion that is rotated by an operator when the operator performs an operation of closing the shoji,
An opening / closing mechanism that displaces the shoji in the closing direction using the rotational force generated by the operation of the handle portion;
A fluid coupling having an input portion to which a rotational force generated by the operation of the handle portion is input, and transmitting the rotational force to the opening / closing mechanism using a viscous resistance of the viscous fluid, wherein the viscous fluid is enclosed; A casing provided with an output shaft for outputting a rotational force to the opening / closing mechanism, and a fluid coupling having a rotating body that is rotatably accommodated in the casing and that receives the rotational force input to the input unit and rotates. ,
A tapping mechanism that generates a warning sound to notify an operator to that effect when the handle portion is further rotated in a state where transmission of rotational force is interrupted by the fluid coupling, the casing and the casing A hammer portion that rotates integrally with one of the handle portions, and a tapping mechanism that has a striking portion that rotates integrally with the other of the casing and the handle portion and is beaten by the hammer portion. And handle box. The handle box according to claim 1, further comprising a limiter function stop mechanism that stops a torque limiter function of the fluid coupling. A shoji that is displaceably mounted on the window frame,
A window opening and closing device comprising: the handle box according to claim 1 or 2 that opens and closes the shoji.