JPS5940545Y2 - Automatic closing device for sliding doors - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic closing device for a sliding door, which allows the door to close automatically by releasing the hand after opening the door, and also allows the door to close automatically by releasing the hand from the door after opening the door. The purpose of this invention is to make the length of the opening movement (or closing movement) of the door significantly shorter than the length of the opening movement (or closing movement) of the door.

The present invention will be explained below based on drawings showing an example of implementation.

In the figure, 1 is a door that slides on the rail 2 and opens, and 3 is a passageway opening that is opened and closed by the door 1.

Reference numeral 4 denotes an automatic closing device that is attached along the sliding direction of the door 1 above a lintel (not shown) that guides the upper end of the door 1, and its length corresponds to the opening (or closing) movement of the door 1.
It is made up of about half the length [Details will be explained later]
.

The automatic closing device 4 is mainly connected to a cross-sectional passage (1) which is supported horizontally on the building 5 side via a bracket 6 above the passageway opening 3.
An elongated upper main body 1, an elongated lower main body 8 of a simplified circular shape, and a two-stage lower main body 8 which is slidably fitted into the lower main body 8 with the lower main body 8 as a first stage pipe. Pipe 9 and
A cap 10 that slidably fits inside the two-stage pipe 9 and closes the outer end is attached to a bracket 1 at the upper end of the door 1.
1, a cap 13.14 that closes both ends of the upper f-side main body γ, 80, and an adjustment screw 15 provided on the cap 13 at one end of the upper main body 1. a spring fitting 16 provided near one end in the upper body γ, and a roller movable within the upper body 7 along the length direction of the upper body T, specifically between an intermediate portion and the other end side. Mounting body 17 and the spring mounting tool 16
A set of two tension springs, one end of which is externally fitted and supported by a male threaded member 18 provided on the roller mounting body 17, and the other end of which is externally supported by a male threaded member 19 provided on the roller mounting body 17, and is disposed within the upper body γ. 20.20 is hung in a U shape on a roller 21 pivotally supported by the roller mounting body 17, one end is supported by the cap 14 on the other end side of the upper main body I, and the other end is supported by the cap 14 on the other end side of the upper main body I.
A wire 24 is supported by a supporting part paulownia 23 fixed to the second-stage pipe 9 so as to pass through the through-hole 22 and come into contact with the outer surface of the cap 14, and a wire 24 is connected to the inside of the second-stage pipe 9 in the lower main body 8. A slider 25 attached to the end, a slider 26 attached to the inner end of the three-stage vibrator 12 in the two-stage pipe 9, and two large and small male screw members 27 and 28 provided on the slider 25 have one end, respectively. Large diameter and small diameter tension springs 31 and 32 are located inside the three-stage vibrator 12 and have their other ends externally supported by two large and small male screw members 2930 provided on the cap 10.
It is empty.

The upper and lower main bodies 7.8 are located above the lintel, and the lintel has a groove formed in the longitudinal direction through which the bracket 11 is inserted.

More specifically, the upper body 7 and the lower body 8 are fixed to each other via caps 13 and 14 at both ends, and the cap 13 at one end is provided with a check valve at the portion that fits into the lower body 3. 33 and a flow rate regulating valve 34 are provided.

This check valve 33 has a ball 33b that opens and closes the air hole 33a.
The flow rate adjustment valve 34 has a tapered adjustment screw 34b for adjusting the air flow rate from the air hole 34a, and is adapted to be closed when the door 1 is closed. During the closing operation, the lower main body 8 and the second stage pipe 9
．． The amount of air flowing out from inside the three-stage pipe 12 is adjusted.

35 is a stopper for removing the ball 33b.

Further, the slider 25 attached to the two-stage pipe 9 has a substantially cylindrical main body 37 having an air circulation hole 36 inside,
It consists of a ring-shaped sliding member 39 made of synthetic resin that is externally supported on this main body 37 so as to be in contact with the inner surface of the lower main body 8 via a metal spacer 38, and is further attached to the three-stage vibrator 12. The slider 26 is a three-stage pipe 1.
2 is made of a synthetic resin ring-shaped sliding member 41 which is externally fitted and supported so as to be in contact with the inner surface of the two-stage pipe 9 via a metal spacer 40.

Further, the tension spring 31 is fitted onto the tension spring 32.

Furthermore, tension springs 20, 20 provided within the upper body γ
The spring force is adjusted by moving the spring fitting 16 toward and away from the cap 13 using the adjusting screw 15, and the spring force due to the tension springs 20, 20 is adjusted by the tension spring 31, 32. The spring force is set to be approximately the same as the spring force.

Next, the operation of the present invention will be explained.

When the door 1 is closed, the second and third stage pipes 9,12 are fitted into the lower pipe 8, as shown in FIG.

When the door 1 is opened from this state in the direction of arrow A in FIG. Slide to .

At this time, the wire 24 is connected to the two-stage pipe 9 via the support member 23, and the spring force of the tension spring 20 is applied via the roller 21 that hangs the wire 24 in a U shape. As the stage pipe 12 and the second stage pipe 9 slide one after another, the spring force of the tension spring 20 acts in addition to the spring force of the tension springs 31 and 32, and the spring force gradually becomes stronger.

By the way, the tension spring 31 that urges the three-stage pipe 12,
32 and a tension spring 20 that biases the second stage pipe 9.
Since the spring force of 20 is almost the same, for example, 3-stage pipe 1
If 2 protrudes from the second stage pipe 9 by about half, the second stage pipe 9 moves by about half from the lower main body 8, and so on.
The moving amount of the stage pipe 12 and the second stage pipe 9 is configured to be approximately the same, and when both pipes 12.9 are in the maximum protruding state, the slider 26 of the third stage pipe 12 is fixedly supported by the second stage pipe 9. The sliders 25 of the two-stage pipe 9 come into contact with the cap 14 on the member 23 and are prevented from coming off.

The wire 24 is hung in a U-shape via the roller 21, and the total length of the wire 24 is small and must be equal to the amount of movement of the two-stage vibrator 9, but if the second-stage pipe 9 is When fitted into the side body 8 (the distance between the roller 21 and the cap 14 is equal to the distance between the two-stage pipe 9
The amount of movement is approximately half of that of .

When you release your hand from the door 1 that has been opened as described above, the door 1 automatically closes in the direction of the arrow in Figure 1 by the force of the tension springs 20, 31 and 32, and at that time 9 and 12 return to the original state shown in FIG. 2 in the reverse order from when the door 1 is opened.

By the way, when the door 1 is completely opened, the lower main body 8 and the second and third stage pipes 9 and 12 are in a fully extended state, and when the door 1 is closed, the second and third stage pipes 9 are fully extended. , 12 are housed in the lower body 8, so the total length of the lower body 8, that is, the automatic closing device 4 is approximately half the length of the opening (or closing) of the door 1.

The automatic closing device for a sliding door of the present invention can be implemented as described above, and includes a first biasing device that biases the second-stage pipe in the direction of storing the second-stage pipe in the first-stage pipe [lower main body (8)].
The door is automatically closed by the tension spring and the second tension spring that urges the three-stage pipe in the direction of storing it in the second-stage pipe, and at this time, the three pipes are configured to be expandable and retractable in a so-called Rondo antenna style. Therefore, when the door is closed, the total length of the automatic closing device can be made approximately half the length of the opening (or closing) movement of the door, and can be configured to be short.

[Brief explanation of drawings]

The drawings show -fII of the implementation of the present invention, in which Figure 1 is a schematic front view showing the arrangement of the automatic closing device of the present invention with respect to the door, Figure 2 is a longitudinal sectional view of the entire automatic closing device, and Figure 3
Figures A-C are enlarged views of the main parts of Figure 2, Figures 4 A-C are enlarged cross-sectional views of the main parts, Figure 5 is a view along the X-X arrows of Figure 2, and Figure 6 is the view of Figure 2. FIG. 7 is a view taken along the Z-Z arrow in FIG. 2. 1...Door, 2...Seal, 3...
...Aisle entrance, 4...Automatic closing device, 5...
...Building, 7...Upper body, 3...
・Lower body, 9...2-stage pipe, 12...
...Three-stage pipe, 20...Tension spring, 21...
...Roller, 23...Support member, 24...
...Wire, 25°26...Slider, 31.32...Tension spring.

Claims (1)

[Scope of utility model registration request] This is an automatic closing device installed above a door mounting part in which a passage opening is opened and closed by a sliding door, and includes a first-stage pipe, a second-stage pipe fitting slidably inside the first-stage pipe, and a third-stage pipe that is slidably fitted into the second-stage pipe; a cap that closes both ends of a main body horizontally connected to the first-stage pipe; a spring fitting provided near one end of the main body; a roller mounting body provided within the main body so as to be movable along the length direction of the main body; and a roller mounting body provided within the main body with one end supported by the spring mounting tool and the other end supported by the roller mounting body. A tension spring is hung in a U shape on a roller pivotally supported by the roller mounting body, one end is supported by a cap on the other end side of the main body, and the other end passes through a through hole in the cap and is connected to the outer surface of the cap. a wire supported by a support member fixed to the second-stage pipe so as to be able to come into contact with the second-stage pipe; one end supported on the inner end side of the second-stage pipe and the other end supported on the outer end side of the third-stage pipe; and a tension spring located within the three-stage pipe, with either the first-stage pipe or the third-stage pipe facing the building,
An automatic closing device for a sliding door, characterized in that the other side is supported horizontally on the door side.