JP4006664B2 - Speed adjustment mainspring unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mainspring unit used for a so-called closer that is automatically closed by being attached to a sliding door, a door, a shutter, and the like. It relates to a speed-adjustable mainspring unit that automatically closes slowly and slowly.
[0002]
[Prior art]
As a closer attached to a conventional sliding door or the like, there is a closer designed to close the sliding door slowly by enclosing a resistance fluid such as grease inside a wire reel that is rotationally biased by a mainspring spring. (Act No. 63-81179)
In addition, as the closer that automatically closes the sliding door using the mainspring spring, there is an output adjustment type mainspring unit (Japanese Patent Application No. 10-60572) of the applicant of the present application. What can be changed is described.
[0003]
[Problems to be solved by the invention]
In the conventional technology, when the mainspring force is controlled by a resistance fluid and the sliding door is closed slowly, the resistance of the resistance fluid is constant, so the return speed of the sliding door cannot be changed. was there.
[0004]
In addition, since the output adjustment type mainspring unit of the prior application does not have a control mechanism using a resistance fluid, the return speed of the sliding door is too high and hits a person passing through the door or gives an impact to the door pocket. was there.
[0005]
In order to solve the above-mentioned problems, the present invention provides a speed-adjustable mainspring unit that can be closed a little faster or vice versa using a fluid resistance damper and gear. It is aimed.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the speed-adjustable mainspring unit according to the present invention is provided with a rotary damper and a mainspring case attached to a bracket, and the mainspring case stores power by rotating in one direction. The mainspring case is provided with a mainspring which gives a rotational force, a wire reel is provided on the mainspring case, a wire is wound around the wire reel, a main gear is provided, and a rotary shaft of the rotary damper is provided. A fixed adjustment gear is provided, and an idle gear is interposed between the adjustment gear and the main gear, and the idle gear is moved along the adjustment hole to mesh with any of a plurality of gears constituting the adjustment gear. A speed-adjustable mainspring unit (contractor) that adjusts the return rotational force of the mainspring case by matching Section 1).
[0007]
Further, the speed-adjustable mainspring unit according to the present invention is provided with a rotary damper and a mainspring case attached to a bracket, and the mainspring case stores power by rotation in one direction, and the mainspring case is stored by this stored power. The mainspring case is provided with a wire reel, a wire reel is wound around the wire reel, a main gear is provided, and an adjustment gear fixed to the rotary shaft of the rotary damper is provided. An idle gear is interposed between the adjustment gear and the main gear, and the idle gear is moved along the adjustment hole so as to mesh with any of a plurality of gears constituting the adjustment gear; An adjustment shaft that fixes the inner end of the mainspring is disposed in the mainspring case, and an adjustment plate is locked to the adjustment shaft. Speed adjustable mainspring unit, characterized in that pivot to and fixing the johnsongrass (claim 2).
[0008]
1 or 2, wherein the speed adjustable mainspring unit, characterized in that the addition of the pause mechanism to pause the extended position of the wire made of the stopper provided in the heart cam and the bracket provided on the mainspring case (claim 3 ).
[0009]
[Action]
Since the present invention has taken the above-mentioned means, in order to moderate the speed when the sliding door is closed by the action of the rotary damper, the optimum number of teeth in the meshing of the main gear, the adjustment gear and the idle gear You can choose any gear.
[0010]
Further, according to the second aspect of the present invention, since the speed can be adjusted both by the adjusting gear and by the mainspring adjusting shaft, the adjustment range can be remarkably expanded.
[0011]
Further, according to the third aspect of the present invention, since a temporary stop function for temporarily stopping the drawing position of the wire is provided, the sliding door or the shutter can be stopped while being opened.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In the first embodiment of FIG. 1, a mainspring case 2 is rotatably provided on a bracket 1 (transparent), and a mainspring 20 is integrally provided with a wire reel 3 and the inner end thereof is fixed. Rotation is energized. A wire 4 is wound around the wire reel 3 and a main gear 40 is provided. The terminal 400 is connected to a sliding door, a shutter, or the like. The bracket 1 is further provided with a rotary damper 5 having a function of acting resistance only in one rotation direction, and an adjustment gear composed of a small gear 51, a middle gear 52, and a large gear 53 is coaxially attached thereto. Gears can be selected. An idle gear 6 is adjusted along the adjustment hole 7 so as to mesh with any one of the small gear 51, the middle gear 52, and the large gear 53, and always mesh with the main gear 40.
[0013]
In the speed-adjustable mainspring unit having the above structure, when the wire 4 connected to the sliding door or the like is pulled out from the bracket 1, the mainspring 20 is wound and stored, and this automatically attempts to close the sliding door. Due to the unidirectional rotary damper 5, the movement is slow. The sliding door moves early at the beginning of closing due to the action of the mainspring and late at the end of closing. Depending on whether the meshing gear is the small gear 51, the middle gear 52, or the large gear 53, the rotational force of the mainspring applied to the rotary damper 5 is different, so that the movement of the sliding door and the like can be adjusted in multiple stages. In the above embodiment, the self-closing speed of the sliding door, shutter, etc. can be changed by changing the rotational force of the mainspring applied to the rotary damper with the adjustment gear.
[0014]
FIG. 2 shows a second embodiment of the speed adjustment type mainspring unit of the present invention. That is, the rotary damper 5 and the mainspring case 2 are arranged in parallel on the bracket 1, the wire reel 3 is provided on the rotatable mainspring case 2, the wire 4 is wound around the wire reel 3, and the main gear 40 is provided. It has been. The rotary damper 5 is provided with a function in which a resistance works only in one rotation direction, and is provided with a gear 50. The gear 50 and the main gear 40 are engaged with each other via an idle gear 60, and the wire 4 is connected to the rotary damper 5. When pulled out, the rotary damper 5 is rotated via the gears 40, 60 and 50. Since the rotary damper 5 is resistant in one rotation direction, the rotary damper 5 is light and quick when the wire 4 is pulled out, but when returning, the fluid resistance works so that it moves slowly.
[0015]
An adjustment shaft 8 in which the inner end of the mainspring 20 in the mainspring case 2 is fixed by a split groove 80 is rotatably provided on the bracket 1, and an adjustment plate 81 integrated therewith is locked by a manual claw 82, The manual claw 82 is held in a posture by a wire spring 83. Reference numeral 84 denotes a stop screw that firmly fixes the adjustment plate 81 to the bracket 1 after the rotation adjustment. In the above structure, when it is desired to speed up the return movement of the wire 4, this can be achieved by removing the screw 84 and turning the adjusting plate 81 counterclockwise to increase the power of the mainspring. Further, when it is desired to slow the return movement of the wire 4, this can be achieved by turning the adjusting plate 81 clockwise to weaken the mainspring force.
[0016]
FIG. 3 shows a third embodiment of the speed adjustment type mainspring unit of the present invention. In this embodiment, the other embodiment of the adjustment shaft 8 is provided in the first embodiment of FIG. 1, and the adjustment plate 81 is fixed to the screw 84. The adjustment plate 81 and the spring pin 86 are Can be locked. In addition to this, a temporary stop mechanism is added, and the orbiting heart cam 25 is provided at two places on the wire reel 3, and can be stopped by the stopper 9 every time it rotates 180 °. The stopper 9 is pivotally attached to the bracket 1 and includes a swing pin 91, a winding portion 92, a support portion 93, and a contact portion 94. When the circular orbiting heart cam 25 rotates, the stopper 9 is rotated every 180 °. The tip pinion 90 of the swing pin 91 is engaged and locked.
[0017]
In the structure described above, when the wire 4 is pulled out, the circular orbit heart cam 25 is not caught by the tip claw 90, but when the wire 4 is rewound by the force of the mainspring 20, it engages and temporarily stops. To release this, if the wire 4 is pulled a little, the heart cam 25 is detached from the tip claw 90 and the wire 4 is rewound to the end. By connecting a door, sliding door, shutter, or the like to the terminal 400 of the wire 4, the terminal 4 can be temporarily stopped in a fully open state or a half open state.
[0018]
The rotary damper in the present invention has a one-way function, and fluid resistance works only when the wire returns. In the present invention, it is desirable to adjust the torque by switching the multi-stage gear. However, several types of gears may be prepared and exchanged. Further, the adjusting plate 81 in the present invention may be as shown in FIG. 2 or as shown in FIG.
[0019]
【The invention's effect】
In the present invention, according to the first aspect, the speed at which the wire is pulled back can be adjusted by moving the idle gear along the adjusting hole provided in the bracket and changing the gear ratio.
[0020]
According to the second aspect of the present invention, since both the adjustment gear and the adjustment shaft of the first aspect are provided, the return speed of the wire can be adjusted more widely.
[0021]
According to the third aspect of the present invention, since the temporary stop function is provided, the position where the wire is pulled out can be temporarily stopped with the sliding door / shutter opened.
[0022]
[Brief description of the drawings]
FIG. 1 is a front view showing an example of a speed adjustment type mainspring unit according to the present invention.
FIGS. 2A and 2B are a front view and a partially cutaway cross-sectional view, respectively, showing another example of the present invention.
FIG. 3 is a front view showing another example of the present invention.
[0023]
[Explanation of symbols]
1 ·· Bracket 2 ·· Mainspring case 3 · · Wire reel 4 · · Wire 5 · · Rotary damper 6 · · Idle gear 7 · · Adjustment hole 8 · · Adjustment shaft 9 · · Stopper 20 · · Mainspring 40 · · Main Gear 50 ··· Gear 51 · 52 · 53 · · Adjustment gear 60 · · Idle gear 80 · · Split groove 81 · · Adjustment plate 82 · · Manual claw 83 · · Wire spring 84 · · Set screw 86 · · Spring pin 400 ..Terminal

Claims (3)

A rotary damper and a mainspring case are attached to the bracket, and the mainspring case includes a mainspring that accumulates power by rotation in one direction, and returns to the mainspring case by this accumulated power,
The mainspring case is provided with a wire reel, a wire is wound around the wire reel, a main gear is provided, and an adjustment gear fixed to the rotary shaft of the rotary damper is provided. The adjustment gear and the main gear An idle gear is interposed between the main gear case and the main gear case by adjusting the return rotational force of the mainspring case by moving the idle gear along the adjustment hole and meshing with any of the plurality of gears constituting the adjustment gear. A speed-adjustable mainspring unit. A rotary damper and a mainspring case are attached to the bracket, and the mainspring case includes a mainspring that accumulates power by rotation in one direction, and returns to the mainspring case by this accumulated power,
The mainspring case is provided with a wire reel, a wire is wound around the wire reel, a main gear is provided, and an adjustment gear fixed to the rotary shaft of the rotary damper is provided. The adjustment gear and the main gear An idle gear is interposed between and the idle gear is moved along the adjustment hole so as to mesh with any of a plurality of gears constituting the adjustment gear, and further, the inner end of the mainspring is attached to the mainspring case. A speed-adjustable mainspring unit characterized in that a fixed adjustment shaft is arranged, an adjustment plate is locked to the adjustment shaft, and the adjustment plate is rotated and fixed. 3. The speed-adjustable mainspring unit according to claim 1 or 2, further comprising a temporary stop mechanism for temporarily stopping a wire drawing position including a heart cam provided on the mainspring case and a stopper provided on the bracket .

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