JP3976956B2 - Sliding door opening assist device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sliding door opening assist device (hereinafter simply referred to as a door opening assist device), and more particularly to a novel opening assist device that facilitates opening of a sliding door.
[0002]
[Prior art]
In recent years, a sliding door has been proposed and put into practical use, in which a packing material is provided between the door tip and the door frame of the sliding door to reduce the impact when the door is closed or to keep the closed state stable.
[0003]
When the sliding door is closed, for example, a packing material provided on one of the door tip or the door frame is engaged and slidably contacted with a sealing member provided on the other, and sealed.
[0004]
[Problems to be solved by the invention]
However, such a sliding door has a disadvantage that when the sliding door is opened, until the frictional engagement between the packing material and the sealing member at the door end is released, the sliding door becomes heavy and unusable although it is a slight stroke.
[0005]
Accordingly, the present invention provides a novel opening assist device that facilitates opening by pushing the sliding door in the opening direction by the force of the spring when the sliding door is opened, and has an object to improve the usability of the sliding door. It is said.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a flat case embedded in a door tip of a sliding door, and a front plate facing the door frame that passes through the front plate in the case and moves in the front-rear direction perpendicular thereto. An actuating rod that is guided and urged forward in a direction that protrudes from the front plate, and protrudes in a direction parallel to the side plate of the case at the inner end of the actuating rod, and the tip extends at an acute angle with the front plate And a control part formed with a locking surface obliquely intersecting with, a locking bar supported so as to be able to rotate in a plane parallel to the side plate of the case in the vicinity of the operating bar, and linked to the locking bar, And an operating member rotatably provided on the outer surface and / or inner surface of the sliding door, and when the operating rod is pushed into the case when the sliding door is closed, the tip of the locking rod is placed on the locking surface of the control unit. The length of the locking rod with the urging force of the working rod The component of the direction is carried on the rotating shaft of the locking rod, and when the sliding door is opened, the tip of the locking rod is rotated in the direction close to the front plate via the operation member, so that the locking rod and the operating rod It is characterized in that the engagement with is released.
[0007]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
2 to 4, reference numeral 1 denotes a case, and the case 1 is a flat box-like body embedded in the door end portion of the sliding door 2 as shown in FIGS. 1 to 3.
[0008]
For example, as shown in FIG. 3, the case 1 is fitted from the door frame side into an unnumbered mounting hole opened on the door end surface of the sliding door, and is prevented from rotating by a mounting screw 4 for fixing the handle seat plates 3 and 3. Is given. The case 1 is fixed by an operation knob described later, but since it is not the gist of the present invention, further detailed description is omitted.
[0009]
In this case 1, as shown in FIG. 4, it passes through the front plate 6 facing the door frame 5 (see FIG. 3) of the sliding door and moves in the front-rear direction (left-right direction in FIG. 4) perpendicular thereto. An actuating rod 7 is provided which is guided as possible.
[0010]
The guide device for the operating rod 7 includes, for example, an engagement between a guide pin (not shown) protruding on the back side of the operating rod 7 shown in FIG. The plate 6 can be configured with an opening for the operating rod 7.
[0011]
The actuating rod 7 in the illustrated embodiment is an elongated block body having a rectangular cross-sectional shape, and its front end portion is formed in a semicircular shape.
[0012]
A push spring 8 as a compression coil spring is elastically mounted in a hollow portion formed from the rear end surface (inner end surface when viewed from the front plate 6) to the front end portion of the operating rod 7.
[0013]
The elastic force of the push spring is set to be slightly larger than, for example, the sliding door locking force (friction force) of the packing material in a state where the operating rod 7 is pushed into the case 1 as shown by a solid line in FIG.
[0014]
In addition, a control portion 9 extending downward in parallel with the side plate of the case 1 is integrally formed at the inner end of the operating rod 7, and an extension is provided at the front end portion (lower end portion) of the control portion 9. A slope 11 that obliquely intersects the plate 6 at an acute angle (for example, 45 degrees) is formed.
[0015]
On the other hand, a locking rod 12 is disposed in the vicinity of the lower side of the operating rod 7, and the locking rod 12 is supported so as to be rotatable in a plane parallel to the side plate of the case 1.
[0016]
For example, as shown in FIG. 4, the locking rod 12 includes an operating arm 13 extending in the radial direction and a click protrusion 14 formed at an angular position symmetrical to the operating arm 13 with respect to the rotation center. Forming.
[0017]
A pair of stoppers 15, 15 project from the inner surface of the side plate of the case 1, and the rotation angle range of the operating arm 13 is limited to, for example, 45 degrees by these stoppers 15, 15.
[0018]
Further, below the click protrusion 14 is provided a click plate 16 that is biased in the direction approaching the locking rod 12 and has a V-shaped groove that engages with the click protrusion 14. A click action is generated when the V-shaped groove of the plate 16 and the click protrusion 14 are engaged and when the click plate and one side surface of the click protrusion 14 are joined.
[0019]
On the other hand, as shown in FIGS. 1 to 3, operation knobs 17 are rotatably provided in recessed portions formed below the seat plate 3 of the handle on the inner and outer surfaces of the sliding door. The locking rod 12 is connected to the same rotating shaft.
[0020]
In the opening assisting device according to one embodiment of the present invention configured as described above, when the sliding door is opened, the operating rod 7 protrudes to the position indicated by the chain line in FIG.
[0021]
When closing the sliding door, particularly when the door tip comes close to the door frame, frictional resistance is generated in the sliding door due to the action of the packing material, but regardless of this, the sliding door is moved to the sliding door closing position shown in FIG.
[0022]
At the same time, the operating rod 7 is pushed into the case 1 against the elasticity of the push spring 8 and retracts to the position indicated by the solid line in FIG.
[0023]
Therefore, the locking device (not shown) is operated to lock the sliding door, and the operating knob 17 is operated to rotate the locking rod 12 clockwise in FIG. 4 so that the tip of the operating arm 13 is connected to the inner end of the operating rod. Bonded to the slope 11.
[0024]
Then, the elastic force of the push spring 8 is carried on the rotating shaft of the locking rod through the engagement of the control unit 9 and the locking rod 12, and the state in which the operating rod 7 is retracted into the case 1 is related. It is kept stable by the toe 12.
[0025]
When opening the sliding door, after releasing the locking device (not shown), the operation knob 17 is turned counterclockwise by a slight angle in FIG.
[0026]
Then, the tip of the operating arm 13 moves to the left in FIG. 4 and the engagement between the operating arm 13 and the control unit 9 is released, so that the free operating rod 7 moves forward by the elasticity of the push spring 8. Thereafter, the control unit 9 stops as it is locked to the front stopper 15 via the tip of the operating arm 13.
[0027]
At this time, since the operating rod 7 protruding from the front plate 6 receives a reaction force from the door frame, the case 1 and the sliding door 2 integrated therewith receive a force in the opening direction.
[0028]
Since this force is equal to the elastic force of the push spring 8 and larger than the frictional force of the sliding door, the sliding door 2 can be automatically opened slightly only by operating the operation knob 17, and thereafter the sliding door can be opened with a normal operating force. Therefore, it does not require great power to start opening and is easy to use.
[0029]
In order to retract the operating rod 7 protruding from the case 1, as described above, the reaction force from the door frame may be used when closing the sliding door, or the operating rod 7 is retracted with fingers after the sliding door is opened. At the same time, the operating knob 17 may be turned to lock the operating rod 7 with the locking rod 12.
[0030]
Further, the elasticity of the push spring 8 may be set smaller than the frictional force of the sliding door. In this case, the sliding door cannot be opened only by operating the operation knob 17, but the sliding door is slightly opened by hand in addition to the elasticity of the push spring. If pushed in the opening direction, the sliding door opens when the sum of these forces exceeds the frictional force.
[0031]
【The invention's effect】
As is apparent from the above description, the present invention provides an operating rod urged in the door frame direction in a case provided at the door end of the sliding door so as to be movable in the front-rear direction. Since the force projecting in the door frame direction is used for opening the door, it is possible to eliminate the inconvenience that the sliding door becomes heavy at the time of opening, and to improve the usability of the sliding door.
[Brief description of the drawings]
FIG. 1 is a front view of a door opening assisting device according to an embodiment of the present invention.
FIG. 2 is a side view thereof.
FIG. 3 is a plan view thereof.
FIG. 4 is a partial cross-sectional side view of the case.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case 2 Sliding door 5 Door frame 6 Front board 7 Actuation rod 8 Push spring 9 Control part 11 Slope 12 Locking rod 13 Actuation arm 15 Stopper 17 Operation knob

Claims (1)

A flat case embedded in the door tip of the sliding door, and in this case, the front plate that opposes the door frame is guided so as to be movable in the front-rear direction perpendicular thereto, and in the direction protruding from the front plate An operating rod biased forward, and a control unit that projects in a direction parallel to the side plate of the case at the inner end of the operating rod, and that has a locking surface whose extension extends obliquely at an acute angle with the front plate at the tip. And a locking rod supported so as to be able to rotate in a plane parallel to the side plate of the case in the vicinity of the operating rod, and linked to the locking rod so as to be rotatable on the outer surface and / or the inner surface of the sliding door. In the state where the operating rod is pushed into the case when the sliding door is closed, the tip of the locking rod is brought into contact with the locking surface of the control unit from the diagonally outside, and the operating rod is The component force in the length direction of the locking rod of the urging force is carried on the rotating shaft of the locking rod. In addition, when the sliding door is opened, the tip of the locking rod is rotated in the direction close to the front plate via the operation member so that the engagement between the locking rod and the operating rod is released. Opening assist device.

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