JPS6227653Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an automatic closing device for sliding doors, more specifically, a device that is installed in a lintel and automatically closes an open sliding door.The main purpose of the invention is to The purpose is to facilitate installation into the
Another objective is to be able to absorb errors in the longitudinal dimension of the cylinder.

Hereinafter, embodiments of the present invention will be described based on the drawings. The automatic closing device for sliding doors according to the present invention is
It is a device that is disposed in the lintel 4 and automatically closes the opened sliding door 1, and it is hung between a pair of pulleys 10 that are respectively pivotally supported at both ends of the lintel 4 in the longitudinal direction. The wire 11 moves along the longitudinal direction of the lintel 4, and when the wire 11 moves along the longitudinal direction of the lintel 4 as the sliding door 1 opens, the wire 11 stores a spring force in conjunction with the wire 11. When the sliding door 1 is closed, it has a spring means 23 for returning the door to its original position, a cylinder 26 that is fixed at a fixed position on the lintel 4, and a rod 21 that protrudes from the cylinder 26 in conjunction with the wire 11 so as to be able to move forward and backward. A support base 31 is fixed at a fixed position on the lintel 4 in correspondence with one longitudinal end of the cylinder 26 from which the rod 21 protrudes, and the other longitudinal end of the cylinder 26 A mounting base 13 is fixed to a fixed position of the lintel 4 corresponding to the lintel 4, and the support base 31 is formed in a shape such that a support piece 60 in which a support hole 36 is formed stands up from a bottom plate piece 59 fixed to the lintel 4. The stand 13 is formed in such a shape that a cylinder fixing piece 30 in which a notch 32 is formed stands up from a mounting piece 57 fixed to the lintel 4. A step portion 56 is formed along the direction, and a narrow diameter portion 35 is formed between the step portion 56 and the tip of one end of the cylinder 26, and a tip of the other end along the longitudinal direction is formed at the other end of the cylinder 26 in the longitudinal direction. The nut locking portion 45
and a threaded part 33 are formed, and the threaded part 33 fits into the notch 32 of the mounting base 13, and the peripheral edge of the notch 32 is held between the nut 34 screwed into the threaded part 33 and the nut locking part 45. , the narrow diameter portion 35 is slidably inserted into the support hole 36 along the longitudinal direction of the cylinder 26, and the peripheral edge of the support hole 36 is locked to the stepped portion 56, so that the cylinder 26 is placed in the fixed position of the lintel 4. It is fixed to . As shown in FIG. 1, the sliding door 1 is mounted within a door frame 5 that includes an upper stile 2, a vertical stile 3, a lintel 4, and the like. The door frame 5 is made of metal such as aluminum or iron, and an upper stile 2, a lintel 4, and a lower rail 6 are disposed between the pair of vertical stile 3, running horizontally in order from the top, and the upper stile 2 and the lintel 4 A transom 7 is provided between the lintel 4 and the lower rail 6, and a pair of sliding doors 1 are installed between the lintel 4 and the lower rail 6. As shown in FIG. 2, the lintel 4 is constructed by assembling a lintel main body 4a and a cover 4b and fixing them with screws 8. On the lower surface of the lintel main body 4a, there is an upper rail 9 that runs along the longitudinal direction and has an open bottom. Two rows are formed. Each upper rail 9
The upper end portions of the sliding door 1 are fitted into the upper rails 9 and 6, respectively, and the sliding door 1 is held between the upper rail 9 and the lower rail 6. A pulley 10, a wire 11, an air damper 12, etc. are arranged inside the lintel main body 4a.

The pulleys 10 are disposed at both ends of the lintel 4 in the longitudinal direction, and are pivoted to mounting bases 13 and 14, respectively, which are fixed at fixed positions on the lintel main body 4a. Both mounting bases 13, 14
The screw shaft 15 is projected upward, and the pulley 10 is rotatably attached to the screw shaft 15.
A pulley cover 16 is inserted through the screw shaft 15 to cover the pulley 10, and the pulley 10 and the pulley cover 16 are inserted into the screw shaft 15 to cover the pulley 10.
is a nut 17 that is screwed onto the screw shaft 15.
It is prevented from falling out from 5. The mounting bases 13 and 14 to which the pulley 10 is attached are each fixed to the lintel main body 4a with screws 20. A wire 11 is routed between both pulleys 10. The wire 11 has both ends connected by a coil spring 18 to form a loop. A sliding door connector 19 connected to the sliding door 1, a rod connector 22 connected to the rod 21 of the air damper 12, and a spring connector 24 connected to the spring means 23 are fixed in place at the intermediate portion of the wire 11. ing. The spring means 23 is a clockwork spring, and the spring band 25
The end portion of the wire protrudes to the outside and is connected to the spring connector 24 of the wire 11. As a result, when the wire 11 moves in the longitudinal direction, the mainspring spring 23 is wound, a spring force is stored in the mainspring spring 23, and a restoring force is applied to the wire 11. The return force acts on the sliding door 1 connected to the wire 11 via the sliding door connector 19, causing the sliding door 1 to slide. That is, if the wire 11 and the sliding door 1 are connected so that the sliding door 1 is in the closed position when the mainspring spring 23 is unwound, the mainspring spring 23 will be wound when the sliding door 1 is opened. A closing force acts on the sliding door 1, and if the force to open the sliding door 1 is released at that time, the sliding door 1 automatically closes. A pair of sliding door connectors 19 are provided corresponding to each sliding door 1, but they are connected only to one sliding door 1 that is actually automatically closed, and are not connected to the other sliding door 1. In this way, only one sliding door 1 will be automatically closed,
Both sliding doors 1 are never opened or closed at the same time.

By the way, if only the spring force is applied when the sliding door 1 is closed, the sliding door 1 will close forcefully, which is dangerous, and when the sliding door 1 hits the door frame 5, it will make a loud noise, so it is difficult to close the door. It is necessary to brake the spring force when For this purpose, an air damper 12 is connected to the wire 11. The air damper 12 slides along the longitudinal direction of the cylinder 26 between a position where the rod 21 is accommodated within the cylinder 26 and a position where the rod 21 protrudes from the cylinder 26.
1 is braked by the air in the cylinder 26 during movement. A threaded portion 27 is formed at the tip of the rod 21, and this threaded portion 27 is inserted into the through hole 28 of the rod connector 22.
The rod coupling tool 22 is fixed to the rod 21 by inserting the nut 29 through the threaded portion 27 and screwing the nut 29 into the threaded portion 27. In this way, the wire 11 and the rod 21 are interlocked. The air damper 12 is mounted on a cylinder fixing piece 30 that stands up on a mounting base 13 located at the left end in FIG.
and a support stand 31 fixed to the central part of the lintel main body 4a in the longitudinal direction. That is, the cylinder 2 is inserted into the notch 32 formed in the cylinder fixing piece 30.
Attach the threaded part 33 provided on the left end of the cylinder 26, and screw the nut 34 onto the threaded part 33 to fix the left end of the cylinder 26 to the cylinder fixing piece 30. The cylinder 26 is inserted into the support hole 36 formed in the support base 31.
The air damper 12 is supported by being slidably inserted therethrough along the longitudinal direction. The air damper 12 is arranged so that the rod 21 protrudes from the right end of the cylinder 26, and the wire 11 is connected to the sliding door 1 so as to rotate clockwise when viewed from above when the sliding door 1 is opened. Also, wire 11 and rod 21
and are connected at the rear position in FIG. Therefore, when the sliding door 1 is opened, the rod 21 protrudes from the cylinder 26. A check valve 37 is attached to the left end of the cylinder 26. The check valve 37 has a larger air resistance when air flows out than when air flows into the cylinder 26. This results in
When the sliding door 1 is opened, that is, when the rod 21 is projected, the effect of the air damper 12 is weakened so that the sliding door 1 can be opened with less force, and when the sliding door 1 is closed, sufficient braking is applied. A hose 38 is connected to the check valve 37. In the figure, 39 is a hook that fixes the hose 38 in a fixed position.

The connection between the sliding door 1 and the wire 11 is achieved through long holes 4 formed in the lower surface of the lintel main body 4a corresponding to each upper rail 9.
It is done through 0. Also, a catch fitting 42 is provided in the upper rail 9, which is attached to the lintel main body 4a with screws 41 at the same time as the support base 31. The sliding door 1 is held in an open state by fitting into the sliding door 1.

The support structure for the air damper 12 will be described in more detail below. FIG. 3 shows the air damper 12. Air damper 12 connects cylinder 26 and cylinder 2
The rod 21 is inserted into the rod 6. The rod 21 protrudes from one end of the cylinder 26 so as to move forward and backward, and a head cover 44 having an air circulation port 43 is attached to the other end. Hereinafter, the head cover 44 side of the cylinder 26 will be referred to as the head, and the opposite end will be referred to as the end. Flow port 4 of head cover 44
One end of the cylinder 3 opens into the cylinder 26, and a check valve 37 is attached to the other end. Head cover 4
A ring-shaped nut locking portion 45 protrudes from the outer periphery of the central portion of the head cover 44 in the axial direction, and a threaded portion 33 is formed on the outer peripheral surface between the nut locking portion 45 and one end of the head cover 44 on the check valve 37 side. The nut 34 is screwed together. One end of the check valve 37 is inserted into the flow port 43 of the head cover 44 as described above.
A gas port 51 is formed at the other end, and a hose 38 is connected to the gas port 51. Check valve 37
makes it easy for air to pass in one direction and difficult to pass in the other direction. That is, when the check valve 37 passes air from the gas port 51 side to the distribution port 43 side, the air resistance inside the check valve 37 is reduced to make it easier for the air to pass through, and in the opposite case, the air resistance inside the check valve 37 is reduced to make it easier for the air to pass through. It increases air resistance and makes it difficult for air to pass through. A piston 46 is fixed to one end of the rod 21 within the cylinder 26. A groove 4 is formed on the circumferential surface of the piston 46 along the circumferential direction.
7 is formed, and a piston packing 4 is formed in the groove 47.
8 is fitted. The interior of the cylinder 26 is airtightly divided by the piston 46 into a first air chamber 49 on the end side and a second air chamber 50 on the head side.
Therefore, air flows into and out of the second air chamber 50 only through the check valve 37. cylinder 2
At the end of 6 there is an insertion hole 5 into which the rod 21 is inserted.
An end cover 53 having a diameter of 2 is attached. Air holes 54 are formed on the peripheral surface of the end cover 53,
Air flows into and out of the first air chamber 49. A bearing 55 made of a lubricating material such as tetrafluoroethylene containing an oil lubricant is mounted on the inner circumferential surface of the insertion hole 52 of the end cover 53 to support the rod 21 and to ensure smooth sliding of the rod 21. ing. A stepped portion 56 is formed on the outer periphery of the axially central portion of the end cover 53 over the entire outer circumferential surface.
The diameter between the cylinder 26 and the tip on the end side is smaller than that of the cylinder 26 to form a narrow diameter part 35. A nut locking portion 58 is formed at one end of the rod 21 protruding from the cylinder 26, and a threaded portion 27 is formed on the outer peripheral surface between the nut locking portion 58 and the tip of the rod 21. A nut 29 is screwed into the portion 27. In this way, the peripheral edge of the through hole 28 of the rod connector 22 is held between the nut locking portion 58 and the nut 29, and the rod 21 and the wire 11 are connected.

The air damper 12 is supported between the mounting base 13 and the support base 31 as described above. As shown in FIG. 4, the mounting base 13 that supports the head of the air damper 12 is formed into a substantially L-shape with two surfaces bent at right angles, and the horizontal piece serves as the mounting piece 57. The vertical piece serves as a cylinder fixing piece 30. A screw shaft 15 protruding from the top surface is attached to the center of the mounting piece 57. This screw shaft 15 has a pulley 1
0 is inserted rotatably. An upper disk-shaped pulley cover 16 is inserted into the screw shaft 15 from above the pulley 10 so as to cover the pulley 10. Screw shaft 1
A nut 17 is screwed into 5 to prevent the pulley 10 and pulley cover 16 from coming off. Mounting piece 57
is fixed to the lintel main body 4a with screws 20. The cylinder fixing piece 30 is bent within a plane to form a substantially L-shape. A notch 32 is formed at the tip of the horizontal piece of the cylinder fixing piece 30, and a threaded portion 3 formed in the head cover 44 of the air damper 12 is inserted into this notch 32.
3 is fitted, and the peripheral edge of the notch 32 is held between the nut 34 screwed into the threaded part 33 and the nut locking part 45, and the cylinder 26 is fixed to the cylinder fixing piece 30. As shown in FIG. 5, the support stand 31 is composed of a bottom plate piece 59 formed in a substantially L-shape in a plane and a support piece 60 that stands up from the bottom plate piece 59. A pair of screw holes 61 and a long screw hole 62 are formed in each piece. The support piece 60 has a surface perpendicular to the longitudinal direction of the long screw hole 62, and the support hole 36 is formed in the upper part thereof.
On the other hand, the end cover 53 of the cylinder 26 is formed with the stepped portion 56 and the narrow diameter portion 35 as described above. The narrow diameter portion 35 is slidably inserted into the support hole 36 along the longitudinal direction of the cylinder 26, and the peripheral edge of the support hole 36 is locked to the stepped portion 56.
The bottom plate piece 59 is fixed to the lintel body 4a to support the cylinder 26. Therefore, even if there is an error in the length of the cylinder 26, the error can be absorbed. As described above, the cylinder 26 is held by the mounting base 13 and the support base 31, and the air damper 12 is fixed at a fixed position within the lintel main body 4a. In addition, screw hole 6
1 and the long hole 62 for the screw are inserted through the screw 41 together with the catch metal fitting 42, and the two are fixed between the catch metal fitting 42 and the support base 31 so as to sandwich the peripheral edge of the long hole 40 of the lintel main body 4a.

As described above, the present invention has a threaded portion formed at one end of the air damper, a notch formed in the cylinder fixing piece of the mounting base fixed to the lintel, and the peripheral edge of the notch formed with a nut that is screwed into the threaded portion. The cylinder is clamped between the nut locking part formed on the cylinder and fixed in place on the lintel, and a narrow diameter part is formed at one end of the cylinder, and a through hole is formed in the support base fixed to the lintel. is formed, a through hole is inserted into the narrow diameter part,
Since the support base is slidable within the narrow diameter section, one end of the cylinder is fixed by simply inserting one end of the cylinder into the support hole of the support base, making it easy to attach the air damper to the lintel. Since the support stand and the cylinder are slidably fitted along the length of the cylinder, even if there is a dimensional error in the length of the cylinder, the dimensional error can be easily absorbed. It has the advantage of

[Brief explanation of the drawing]

Figure 1 is a front view of a sliding door to which an automatic door closing device according to the present invention is attached, Figure 2 is an exploded perspective view showing an embodiment of the present invention, and Figure 3 is a part of an air damper used in the same. The notched front view, Figures 4a, b, and c are respectively the top, front, and side views of the pulley mounted on the mounting base used in the above, and Figures 5a, b, and c are the same as the above, respectively. They are a plan view, a front view, and a side view of the support stand used. 1 is a sliding door, 4 is a lintel, 10 is a pulley, 11 is a wire, 12 is an air damper, 13 is a mounting base, 21 is a rod, 23 is a spring means, 26 is a cylinder, 30
is a cylinder fixing piece, 31 is a support base, 32 is a notch,
33 is a threaded part, 34 is a nut, 35 is a small diameter part, 3
6 is a support hole, 45 is a nut locking portion, 56 is a stepped portion, 59 is a bottom plate piece, and 60 is a support piece.

Claims (1)

[Scope of utility model registration request] This device is installed in a lintel and automatically closes an opened sliding door.It is a device that is installed between a pair of pulleys that are each pivoted at both longitudinal ends of the lintel. a wire that moves along the direction; and a spring means that stores a spring force in conjunction with the wire and returns the wire to its original position when the wire moves along the longitudinal direction of the lintel as the sliding door opens. It consists of a cylinder fixed in a fixed position on the lintel, a rod that protrudes from the cylinder in conjunction with a wire, and an air damper that brakes the movement of the sliding door when it is closed. A support stand is fixed at a fixed position on the lintel corresponding to one end in the longitudinal direction, a mounting stand is fixed at a fixed position on the lintel corresponding to the other end in the longitudinal direction of the cylinder, and the support stand is fixed to the lintel. A support piece with a support hole formed in it is formed in a shape that stands up from the bottom plate piece, and the mounting base is formed in a shape that a cylinder fixing piece with a notch formed in it stands up from the mounting piece that is fixed to the lintel, and corresponds to the support base. A stepped portion is formed along the longitudinal direction on the circumferential surface of one longitudinal end of the cylinder, and a narrow diameter portion is formed between the stepped portion and the tip of the one end of the cylinder.
A nut locking part and a threaded part are formed at the other longitudinal end of the cylinder toward the tip of the other end along the longitudinal direction. The nut is held between the nut and the nut locking part, and the narrow diameter part is slidably inserted into the support hole along the longitudinal direction of the cylinder, and the peripheral edge of the support hole is locked to the stepped part. By being
An automatic closing device for sliding doors in which the cylinder is fixed in place on the lintel.