JP2013036329A - Door body closing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attach a device body to a frame body which sections an opening of a house or the like.SOLUTION: A door body closing device comprises: a device body 6 attached to a part positioned near a vertical frame body 3 at an end of an upper frame body 2 which sections an opening of a house or the like; and a member 7 to be guided, attached corresponding to the device body 6 at an upper part of a side end where a handle is attached and which is positioned on the opposite side of a side end where a hinge 5 is attached, on a back surface of a door body A. A damper disposed to the device body 6 is formed in a direct driven type so as to attach the device body 6 to such a part, and the damper is made to act to reduce a closing speed of the door body A and quietly close it when closing the door body A, and is made to act to eliminate the need of applying large force to the handle of the door body A when opening the door body A.

Description

  The present invention relates to a door body closing device for automatically and quietly closing a door body disposed in a house or the like when the door body is opened or closed.

Conventionally, there is a door body closing device in which a door body that is rotatably arranged with respect to a frame body that defines an opening of a house, etc., is decelerated immediately before closing the door body to quietly close the door body. (Patent Document 1).
As shown in FIG. 8, such a door body closing device 100 includes an apparatus main body 101 attached to the door body A, and a bracket 102 attached to an upper frame body B among the frame bodies that define an opening of a house or the like. The apparatus main body 101 is attached near the side end where the hinge 103 is attached above the back surface of the door body A, and the bracket 102 corresponds to the position where the apparatus main body 101 is attached. The upper frame B is attached to a position closer to the vertical frame C to which the hinge 103 is attached.
In the door closing device 100, before the pin 102a of the bracket 102 is engaged with the guide groove 105a provided in the arm body 105 of the arm 104 of the device body 101, as shown in FIG. Further, the protrusion 108a of the slider 108 urged by the spring 107 is in contact with the protrusion 106a provided on the support portion 106 of the arm 104. Therefore, the arm 104 is indicated by an arrow in FIG. While receiving the moment in the counterclockwise direction, the side edge of the arcuate vertical plate 106b of the support portion 106 is attached to the boss (not shown) of the case body 109 to which the buffer mechanism 110 is attached or the flange 110a of the buffer mechanism 110. It abuts and receives a clockwise moment from the stopper wall. Therefore, the arm 104 is held at an angular position adapted to a predetermined closing angle capable of engaging with the pin 102a of the bracket 102 as shown in FIG. Further, when the door body A is closed in the direction of the arrow in the figure, the opening of the guide groove 105a as shown in the figure is provided so that the pin 102a of the bracket 102 is engaged with the guide groove 105a of the arm 104. The state reaches the position of the pin 102a.

After the pin 102a is engaged with the guide groove 105a, when the pin 102a starts to move relative to the door body A in the direction of the arrow in FIG. At the same time as starting to rotate in the clockwise direction indicated by the arrow in the figure, the contact portion of the slider 108 with respect to the ridge 106a of the arm 104 changes from the position of the protrusion 108a to the position of the closed end surface, so the arm 104 It receives a moment in the clockwise direction indicated by the arrow in the figure. In response to this moment, the arm 104 starts to rotate and the door body A automatically rotates in the direction of the arrow in the figure, and is closed as shown in FIG. However, when the arm 104 is rotated, the rotation speed is decelerated by the buffer mechanism 110 acting on the rotation shaft of the arm 104. Therefore, when the door body A is closed, the rotation of the door body A is also decelerated and moderated. become. For this reason, the door body A is silently closed without causing a problem that the door body A collides with the door stop (not shown) vigorously and an impact sound is generated.
When the door body A is opened in the direction of the arrow in FIG. 9C after the door body A is closed, the pin 102a of the bracket 102 relatively moves along the guide groove 105a of the arm 104. The arm 104 rotates counterclockwise as indicated by an arrow in FIG. 9 while resisting the urging force of the spring 107, and when the arm 104 is in the state shown in FIG. 9A, the guide groove 105a of the arm 104 is rotated. And the pin 102a of the bracket 102 are disengaged, but at this disengaged position, the angle position adapted to the predetermined closing angle is held as described above.

However, as in the door body closing device described above, the apparatus main body 101 to which the buffer mechanism 110 is attached is attached to the upper part of the back surface of the door body A near the side end to which the hinge 103 is attached, and the bracket. Correspondingly, the door body A is silently closed when the upper frame body B is attached to a position close to the vertical frame body C to which the hinge 103 is attached. However, when opening the door body A, the apparatus main body 101 is located above the back surface of the door body A and close to the side edge opposite to the side edge to which the hinge 103 is attached. Accordingly, the force applied to the handle of the door body A must be increased compared to the case where the bracket 102 is attached to the upper frame body B at a position closer to the vertical frame body D. In addition, a great force is applied There is a problem that the load applied to the hinge resulting in increased by must.
In addition, the shock-absorbing mechanism 110 used in the door body closing device described above is of a rotary type, and has a structure in which a force against the rotation of the rotating shaft always acts on the rotating shaft of the arm 104. For this reason, the above-described problem may be caused, and in addition, a structure that is difficult to set so as to promote the rotation of the arm when the arm 104 is rotated, for example, when the door body A is opened. There is a problem that becomes.
In addition, when the buffer mechanism 110 is a rotary type, the shape is generally large. Therefore, the apparatus main body 101 to which the shock absorbing mechanism 110 is attached increases in size, so that the apparatus main body 101 can be attached to a narrow portion such as the upper frame B. As described above, the apparatus body 101 must be attached to the door body A and the bracket 102 is attached to the upper frame body B, and it is difficult to make it a good-looking type. It is being conditioned.

JP 2007-120140 (pages 4-8, FIGS. 1, 4-6)

  The problem to be solved by the present invention is to make the shock absorbing mechanism attached to the apparatus main body compact by making it a direct acting type, and to enable the apparatus main body to be attached to a frame body that defines an opening of a house or the like. In addition, when the door body is opened, the upper body of the frame is attached to a position close to the vertical frame opposite to the vertical frame to which the hinge is attached. An object of the present invention is to allow the door body to be opened without increasing the force applied to the handle of the door body, and to reliably guide the door body to a closed state when the door body is closed.

A door body closing device according to claim 1 of the present invention closes a door body (A) that is rotatably attached to a frame body that defines an opening of a house or the like via a hinge (5). Because
An apparatus main body (6) attached to the frame body and a guided member (7) attached to the door body (A), and when the door body (A) is closed, the apparatus main body (6) An arm (20) provided so as to be rotatable in a horizontal direction is engaged with a slider (31) provided at a tip of the guided member (7), and in this state, the arm (20) is attached to the frame. In the door body closing device (1) for guiding the door body (A) to the closed state by rotating the body member side and pulling the guided member (7),
The door body rotates in the closing direction above the side end of the door body (A) where the handle located on the opposite side of the side edge to which the hinge (5) is attached is attached. The guided member (7) that engages with the apparatus main body (6) is attached when a predetermined closing angle is reached after starting the operation, while the guided member (7) of the frame is attached to the guided member (7). Attach the device body (6) to the end position of the corresponding upper frame (2),
The device body (6)
The shaft (14c) is rotatably supported by the apparatus body (6), and the arm (20) is connected to the shaft (14c) so as to rotate integrally therewith. A rotating piece (14);
A spring (16) for urging the rotating piece (14) to rotate the arm (20) in the closing direction of the door body (A);
When closing the door body (A), the arm (20) and the slider (31) do not act on the rotating piece (14) before engaging, and after the engagement, A direct acting shock absorber (19) that acts on the rotating piece (14) to decelerate the closing of the door (A);
A slider (18) that is urged by the shock absorber (19) to abut against the rotating piece (14) so as to decelerate closing of the door body (A),
The contact target portion of the slider (18) with the rotating piece (14) is an inclined surface (18a) inclined in the rotating direction of the rotating piece (14) with respect to the moving direction of the slider (18). ) And a non-inclined surface,
When the door body (A) is closed, the contact portion between the rotating piece (14) and the slider (18) is changed from the non-inclined surface of the slider (18) to the inclined surface (18a). The door body (A) is closed when only the moment in the closing direction acts on the rotating piece (14). According to this apparatus, the shock absorber attached to the apparatus main body can be made compact by making it a direct-acting type, and the apparatus main body can be attached to a frame body that defines an opening of a house, etc. The mounting position of the apparatus main body is set near the vertical frame on the opposite side of the vertical frame to which the hinge is attached, of the upper frame of the frame. The opening of the door can be performed without increasing the force applied to the handle of the door body. When closing the door body, only the moment in the closing direction acts on the rotating piece, so that the door body can be reliably guided to the closed state.

  In the door body closing device according to claim 2 of the present invention, when the shock absorber (19) opens the door body (A), the rotating piece is arranged to promote the opening of the door body (A). Acting on (14). According to the present apparatus, when the door body is opened, the shock absorber is made to act on the rotating piece so as to promote the rotation of the arm interlocked with the opening of the door body. It can be done without applying force.

  In the door body closing device according to claim 3 of the present invention, the device main body (6) has adjusting means (17) for adjusting the urging force of the spring (16). Combined with the adjustment of the movable joint, for example, the closing speed when the door body is closed is optimized, and the spring drag received through the door body handle when the door body is opened is adjusted. Then you can do it.

  In the door body closing device according to a fourth aspect of the present invention, the arm (20) is a substantially rectangular thin plate member, and a slider of the guided member (7) is provided on one surface side of the member. A guide portion (27c) having an opening (27b) through which (31) enters and exits from the end portion where the opening (27b) is provided along the longitudinal center line of the member to the vicinity of the approximate center of the member. On the other side of the member, a connecting shaft connected to the rotating piece (14) is located near the end opposite to the end provided with the opening (27b). A mounting base (28a) having a protrusion is provided, and the mounting base (28a) is concentric with the upper fitting hole (8a1) provided on the upper surface side of the apparatus body (6) or the upper fitting hole (8a1). And the same as the upper fitting hole (8a1) provided on the lower surface side of the apparatus main body (6). Which was so as to be loosely fitted in one of the lower fitting hole shape (8b1), thereby, both can double as a left opening door for the right opening door, convenience improves upon installation.

  The door body closing device of the present invention is made compact by making the buffer mechanism attached to the apparatus main body a direct acting type so that the apparatus main body can be attached to a frame body that defines an opening of a house or the like. Become. A guided member is attached to the upper portion of the side end of the door body where the handle located on the side opposite to the side end where the hinge is attached, and the upper frame corresponding to the guided member. Therefore, the opening of the door body can be performed without increasing the force applied to the handle of the door body. In addition, when the door body is opened, a buffer mechanism is applied to the rotating piece so as to promote the rotation of the arm interlocked with the opening of the door body, so that a large force is applied to the handle of the door body when the door body is opened. Can be eliminated.

It is a figure which shows the attachment state of the door body closing apparatus which concerns on embodiment of this invention. It is a disassembled perspective view of the apparatus main body of the door body closing apparatus of FIG. It is the perspective view which looked at the main part of a device of Drawing 1 from the lower part. It is operation | movement explanatory drawing which looked at the operation | movement of the door body closing apparatus of FIG. 1 from upper direction. FIG. 5 is an operation explanatory view of the operation of the door closing device of FIG. 1 as viewed from above, following the operation of FIG. 4. It is operation | movement explanatory drawing which looked at the operation | movement of the door body closing apparatus of FIG. 1 from the downward direction. It is return operation | movement explanatory drawing of the door body closing apparatus of FIG. It is a figure which shows the attachment state of the conventional door body closing apparatus. It is operation | movement explanatory drawing of the door body closing apparatus of FIG.

A door closing device according to an embodiment of the present invention will be described with reference to FIGS. However, this apparatus is applied to a door body A for so-called right opening.
As shown in FIG. 1, the door body closing device 1 is rotatable via a hinge 5 on a vertical frame body 4 of an upper frame body 2 and vertical frame bodies 3 and 4 that define an opening of a house or the like. The disposed door body A can be decelerated and quietly closed immediately before the door body A is closed, as well as the handle (not shown) of the door body A when the door body A is opened. It is an apparatus that can be opened without applying force, and an apparatus main body 6 that is attached to a position near the vertical frame 3 at the end of the upper frame 2 (see also FIG. 3), and a door body A It is composed of a guided member 7 which is attached to the upper portion of the side end where the handle located on the reverse side opposite to the side end where the hinge 5 is attached is attached corresponding to the apparatus main body 6. ing.

First, the apparatus main body 6 according to the present embodiment will be described with reference to FIGS.
As shown in FIG. 2, the apparatus main body 6 is internally provided in an outer case main body 8 and an outer case side plate body 9 that form an outer shape of a thin, thin and substantially rectangular parallelepiped shape, and in the outer case main body 8 and the outer case side plate body 9. The inner case main body 10 and the inner case upper plate body 11 are arranged in the inner case main body 10, and the inner case main body 10 has a left fixed block at the left end corner in FIGS. 2, 4, and 5. 12, a right fixed block 13 is disposed at the right end side corner, and a rotating piece disposed between these fixed blocks 12 and 13 so as to be rotatable in the vicinity of the left fixed block 12. 14, one side of which is seated on a first slider 15 that contacts the small rotor 23 of the first arm portion 14 a of the rotating piece 14, and a spring seat provided on the other side of the slider 15, and the slider 15 On the left fixed block 12 side A spring 16 for biasing, and an adjusting means 17 disposed on the right fixed block 13 for adjusting the biasing force of the spring 16, and one side of the spring 16 on the second arm portion 14 b of the rotating piece 14. In this embodiment, the movable node 19a abuts the second slider 18 set to abut and the other side of the slider 18 while the fixed node 19b abuts the right fixed block 13. Two linear motion type dampers (buffering mechanisms) 19 disposed respectively, and an arm 20 attached to the rotating piece 14 so as to be rotatable in conjunction with the rotating piece 14 are provided. Yes.

Among the constituent members of the apparatus main body 6, the inner case main body 10 and the inner case upper plate 11 are first arranged in a casing formed by the inner case main body 10 and the inner case upper plate 11. The member will be described.
As shown in FIG. 2, the inner case body 10 is an elongated, thin, hollow, substantially rectangular parallelepiped member having an upper surface opened. The lower plate 10a of the inner case body 10 is closer to the left end of the lower plate 10a. An insertion hole (lower fitting hole) 10a6 is provided there, and a short bearing ring 21a projects from the inner periphery of the inner case body 10 in a manner along the peripheral edge of the insertion hole 10a6. Slender guide grooves 10a1 and 10a2 are provided at predetermined intervals from a position slightly separated from the bearing ring 21a to a position near the center along the longitudinal direction of the lower plate 10a. Further, the lower plate 10a is provided with the lower plate 10a near the ends of the guide grooves 10a1 and 10a2 located on the side opposite to the bearing ring 21a and in the vicinity of the approximate center between the guide grooves 10a1 and 10a2. A substantially square-shaped protrusion 22 formed by bending a portion along the longitudinal direction of the lower plate 10a that is notched into a U-shape and is bent inwardly of the inner case main body 10, is provided, and the guide groove A relatively large positioning groove 10a3, 10a4 (provided that the distance from the end of 10a2 to the right end of the lower plate 10a is approximately equal to the center line of the guide groove 10a2). , The groove 10a4 is not shown), and the center line is substantially aligned with the extension of the center line of the guide groove 10a1 near the right end of the lower plate 10a. Guide groove 10a5 of the shark is provided. The upper end portions of the long side plates 10b of the inner case body 10 are respectively provided with protruding ridges 10b1 at predetermined intervals, and the upper ends of the short side plates 10c of the inner case body 10 are short. A convex ridge 10c1 is provided at the center of the portion, and an inverted U-shaped operation hole 10c2 is cut in the side case 10c of the inner case main body 10 in the right end side in FIGS. The operation hole 10c2 is cut out so that the inverted U-shaped center line intersects the center line of the guide groove 10a5 perpendicularly.
Although the description is omitted, the plurality of large and small holes provided in the lower plate 10a are bolt holes for attaching the apparatus main body 6 including the inner case main body 10 and the like to the upper frame 2, or the inner case main body. 10 is a pin hole for positioning the inner case upper plate 11 and the fixed blocks 12 and 13 with respect to 10.

The inner case upper plate 11 is a rectangular thin plate member that is assembled as a plate on the upper surface of the inner case body 10, and an insertion hole (upper fitting hole) 11 a of the inner case upper plate 11 is formed. It is concentric with the insertion hole 10a6 of the inner case body 10 and corresponds to the same hole diameter, and the guide grooves 11b, 11c of the inner case upper plate 11 are guided grooves 10a1, 10a2 has the same groove width and the same groove length, and the guide groove 11d of the inner case upper plate 11 has the same groove width and the same groove length as the guide groove 10a5 of the inner case body 10. Is provided. The inner case upper plate 11 also has a short bearing ring 21b on the lower surface side of the inner case upper plate 11 in a manner along the peripheral edge of the insertion hole 11a, as in the case of the inner case main body 10. Projected. Recessed cutout grooves 11e are provided on both long sides of the inner case upper plate 11 corresponding to the protrusions 10b1 of the inner case main body 10, and the inner case upper plate 11 has a short length. A concave notch groove 11f corresponding to the ridge 10c1 of the inner case main body 10 is provided on both sides of the inner case main body 10, and the inner case upper plate 11 is further spaced apart from the guide groove 11d. In No. 2, a notch groove 11g for preventing interference with a flange portion 26b of an adjusting screw 26 of the adjusting means 17, which will be described later, is provided in the form along the side edge near the side edge on the right end side.
Although not described, a plurality of large and small holes provided in the inner case upper plate 11 are bolt holes for attaching the apparatus main body 6 including the inner case upper plate 11 and the like to the upper frame 2. Alternatively, as described above, it is a pin hole for positioning the inner case upper plate 11 and the like.

Of the members disposed in the housing formed by the inner case body 10 and the inner case upper plate 11, first, the left fixed block 12 includes an elongated lateral block 12a and an elongated lateral block 12b and these blocks. This is a substantially U-shaped thin block member composed of a vertical block 12c that joins 12a and 12b, and when placed on the inner case main body 10, as shown in FIGS. A part of the shaft portion 14c of the rotating piece 14 faces the U-shaped space, and the rotating piece 14 is rotated by the rotating piece 14 on the inclined surface 12a1 provided near the tip of the horizontal block 12a. Further, the second arm portion 14b of the rotating piece 14 is arranged to come into contact with the distal end surface 12b1 of the horizontal block 12b by the rotation of the rotating piece 14 so that the first arm portion 14a comes into contact therewith.
Although the description is omitted, the two large and small holes provided in the left fixed block 12 are a bolt hole for attaching the apparatus main body 6 including the left fixed block 12 and the like to the upper frame 2, and the left It is a pin hole for positioning the fixed block 12 to the inner case body 10.

The right fixed block 13 is a substantially L-shaped thin block member composed of a large horizontal block 13a and a vertical block 13b, and when the right fixed block 13 of the horizontal block 13a is disposed on the inner case body 10. A slot 13a1 in which the adjusting means 17 is disposed along the center line in the longitudinal direction of the horizontal block 13a from the side surface contacting the side plate 10c of the inner case body 10 to the substantially central portion of the horizontal block 13a. Are opened to the upper surface (the surface that contacts the inner case upper plate 11 when disposed on the inner case body 10) and the lower surface (the surface that contacts the inner case main body 10 when disposed on the inner case body 10). On the other hand, the through-hole 13a2 communicating with the slot 13a1 is opened on the side surface of the horizontal block 13a opposite to the side surface in contact with the side plate 10c. The through-hole 13a2 is provided in such a manner that its central axis substantially coincides with the central axis of the adjustment block 25 described below of the adjusting means 17 disposed in the horizontal block 13a. As described above, the cylindrical portion 25b of the adjustment block 25 described below can be moved in and out by the advancement and retreat of the adjustment block 25 of the adjustment means 17. Further, the following fixing of the damper 19 is performed on the side surface of the vertical block 13b that is opposite to the surface that contacts the side plate 10c of the inner case body 10 when the right fixed block 13 is disposed on the inner case body 10. The joint 19b comes into contact.
Although the description is omitted, a plurality of large and small holes provided in the right fixed block 13 are bolt holes for attaching the apparatus main body 6 including the right fixed block 13 and the like to the upper frame body 2, and the right It is a pin hole for positioning the fixed block 13 on the inner case body 10.

  The rotating piece 14 has a short, substantially cylindrical shape, and has a shaft portion 14c having a substantially square square hole at the center of the cylinder, and a tapered shape projecting from the circumference of the shaft portion 14c. A first arm portion 14a having a circular arc shape at the tip thereof, and a second arm portion 14b having a substantially rectangular shape with a chamfered corner portion at the tip thereof. The second arm portion 14b protrudes so that the center line of both of them forms approximately 90 °. The upper and lower surfaces of the shaft portion 14c have a very short cylindrical shape with a shaft diameter smaller than that of the shaft portion 14c, and a small hole having a square hole communicating with the square hole of the shaft portion 14c at the center. Each of the shaft portions 14c1 protrudes (in FIG. 2, only the small shaft portion 14c1 on the upper surface side of the shaft portion 14c is depicted), and the small shaft portion 14c1 on the upper surface side of the inner case upper plate 11 The small shaft portion 14 c 1 on the lower surface side of the bearing ring 21 b is loosely fitted to the bearing ring 21 a of the inner case body 10. Further, a slit 14a1 in which the small rotor 23 is disposed is provided on the distal end side of the first arm portion 14a, and end pieces 14a2 and 14a3 of the first arm portion 14a facing each other across the slit 14a1 are provided. Concentric through-holes are provided, and short and small-diameter pins 24 on which the small rotor 23 is axially attached are fitted into these through-holes. By the way, although the case where the small rotor 23 is disposed on the first arm portion 14a has been described in the present embodiment, the present invention is not limited to this. When such a small rotor 23 is not provided, it goes without saying that the first arm portion 14a is in direct contact with the first slider 15.

  The first slider 15 is formed of a thin and substantially rectangular parallelepiped member, and is provided on a side surface 15a on one side of the slider 15 (the side on which the small rotor 23 of the first arm portion 14a of the rotating piece 14 abuts). When the slider 15 disposed in the inner case body 10 is viewed from above, the vertex 15a1 is located near the center line in the longitudinal direction of the inner case body 10 that is offset from the longitudinal center line of the slider 15. Are provided, and inclined surfaces 15a2 and 15a3 having a predetermined inclination angle from the apex are provided (see FIGS. 4 and 5). Further, on the upper and lower surfaces of the slider 15, the inner case upper plate body extends from the side surface 15 a on one side of the slider 15 to the vicinity of the substantially central portion of the slider 15 along the longitudinal center line of the slider 15. 11 and the elongated ribs 15b1 and 15b2 which are loosely inserted into the guide groove 10a1 of the inner case body 10 are provided in a protruding manner (however, the rib 15b2 is not shown), and the slider 15 is provided in the guide grooves 11b and 10a1. Guided and slid. Further, a bottomed groove 15c having an opening on the side surface is provided at the center of the other side surface of the slider 15.

  The spring 16 is a general coil spring having a predetermined spring constant, and the spring 16 is inserted into the groove hole 15c of the slider 15 and the through hole 13a2 of the right fixed block 13 and spanned between them. The bottom surface of the slot 15c is interposed as one spring seat, and the end surface of the cylindrical portion 25b of the adjustment block 25 of the adjustment block 25 that enters and exits the through hole 13a2 of the right fixed block 13 is the other spring. As a seat, the slider 15 is interposed so as to apply a force for urging the slider 15 toward the left fixed block 12.

The adjusting means 17 is a device for adjusting the urging force of the spring 16, and is configured by an adjusting block 25 and an adjusting screw 26 in the present embodiment. The adjustment block 25 includes a rectangular parallelepiped portion 25a and a cylindrical portion 25b connected to one end face of the rectangular parallelepiped portion 25a. The rectangular parallelepiped portion 25a includes the rectangular parallelepiped portion along the longitudinal central axis. A screw hole 25a1 is provided in the other end face of 25a, and a short square rib 25b1, which is separated from each other by a phase angle of 180 °, is formed on the peripheral surface of the cylindrical part 25b near the rectangular parallelepiped part 25a. 25b2 projects from each other. On the other hand, the adjustment screw 26 includes a head portion 26a having an operation groove such as a driver on one end surface, a flange portion 26b connected to the other end surface of the head portion 26a, and the rectangular parallelepiped portion connected to the flange portion 26b. And a screw portion 26c screwed into the screw hole 25a1 of 25a.
When the adjusting means 17 is assembled to the right fixed block 13, the rectangular parallelepiped portion 25a of the adjusting block 25 is slidable in the rectangular groove portion 13a11 in the slot 13a1, and the cylinder of the adjusting block 25 as described above. The part 25b is assembled so as to be able to enter and leave the through hole 13a2. However, the ribs 25b1 and 25b2 of the adjustment block 25 are guided grooves 10a5 of the inner case main body 10 through the opening provided in the lower surface of the guide groove 11d of the inner case upper plate 11 and the groove hole 13a1 of the right fixed block 13. Are loosely inserted. On the other hand, the adjustment screw 26 of the adjustment means 17 has the screw portion 26c screwed into the screw hole 25a1 of the rectangular parallelepiped portion 25a as described above, and the flange portion 26b thereof into the substantially semicircular groove portion 13a12 in the groove hole 13a1. Inserted. At this time, the head portion 26a of the adjustment screw 26 is in such a manner that the surface of the head portion 26a provided with the operation groove substantially coincides with the surface of the vertical block 13b of the right fixed block 13. In such an adjustment means 17, the adjustment block 25 moves forward and backward when the adjustment screw 26 is rotated, so that the urging force of the spring 16 can be adjusted.

  The second slider 18 is formed of a thin and substantially rectangular parallelepiped member, and the inner case body 10 is disposed on a side surface 18a on one side of the slider 18 (the side on which the second arm portion 14b of the rotating piece 14 abuts). When the slider 18 disposed on the side of the slider 18 is viewed from above, the side surface 18a of the slider 18 is provided with an inclined surface 18a1 having a predetermined inclination angle from the vicinity of a substantially center line in the width direction orthogonal to the sliding direction. (See FIGS. 4 and 5). As will be described later in detail, the inclined surface 18a1 receives a drag force from the damper 19 via the slider 18 on the second arm portion 14b of the rotating piece 14 after reaching a point in time when the rotating piece 14 is rotated. It was set to prevent it from working. The movable nodes 19a of the two dampers 19 abut on the other side surface 18b of the slider 18 as described above. Further, on the upper and lower surfaces of the slider 18, the guide groove 11c of the inner case upper plate 11 and the inner side of the slider 18 along a center line connecting the side surface 18a and the side surface 18b when the slider 18 is viewed from above. Elongated ribs 18c1 and 18c2 that are loosely inserted into the guide groove 10a2 of the case body 10 are provided so as to protrude (however, the rib 18c2 is not shown), and the slider 18 is guided and slid by the guide grooves 11c and 10a2. It is supposed to be.

  The damper 19 is a shock absorber having a predetermined damping coefficient, and is composed of a movable node 19a that can advance and retreat, and a fixed node 19b in which a viscous fluid such as silicon oil is enclosed so that the movable node 19a can be projected and retracted. The apparatus main body 6 is made compact so that it can be attached to a frame that defines an opening of a house or the like. When the damper 19 is assembled to the inner case main body 10, the fixing node 19b is positioned by the positioning grooves 10a3 and 10a4 (however, the groove 10a4 is not shown) and the protrusions 22 of the inner case main body 10, and as described above. The movable joint 19a is brought into contact with the side surface 18b of the slider 18 while being brought into contact with the vertical block 13b of the right fixed block 13 so that the acting force of the damper 19 is applied to the slider 18. The damper 19 is disposed in parallel with the spring 16. By the way, in this embodiment, the case where two dampers 19 are arranged in parallel has been described. However, the present invention is not limited to this. For example, depending on the specification, three or more dampers 19 may be arranged. Alternatively, one damper having a larger capacity than the damper 19 may be arranged.

The arm 20 is a substantially rectangular thin plate-like member, and in this embodiment, the cross section along the center line in the longitudinal direction of the member has a truncated cone shape as shown in FIGS. An upper bottom surface (one surface of the arm (the surface on the back surface in FIG. 2) 27 is formed on the upper surface side of the truncated cone shape, and a lower bottom surface (the other surface of the arm is formed on the lower surface side of the truncated cone shape). (A surface on the front side in FIG. 2) 28 is formed, and an inclined surface 27d having a predetermined inclination is formed by the truncated cone-shaped bus bar, and one end of the upper bottom surface 27 is formed on the upper bottom surface 27 side. A stepped hole 27a is provided at the center of the portion side, and an opening 27b whose opening width increases as it approaches the opening end is provided on the other end portion side of the upper bottom surface 27, and the arm 20 extends from the opening 27b. To the center line in the longitudinal direction of the arm 20 until approximately the center of Thus, there is provided a guide groove (guide portion) 27c through which the slider 31 of the guided member 7 slides (see FIG. 3), and an upper bottom surface of the lower bottom surface 28 provided with an opening 27b. A mounting base 28a protrudes toward the end opposite to the end of the base 27, and the mounting base 28a has a short cylindrical shape with a large diameter so as to coincide with the center of the stepped hole 27a. The large fitting shaft 28a1, the small-diameter fitting shaft 28a2 having a smaller diameter on the fitting shaft 28a1, and the short rectangular connecting shaft 28a3 on the fitting shaft 28a2. Screw holes are formed in the center of these fitting shafts 28a1, 28a2 and connecting shaft 28a3 so that the mounting bolts 29 are screwed together.
When the arm 20 is assembled so as to be interlocked with the rotation of the rotating piece 14, the rotating piece 14 is disposed in the inner case body 10, and the inner case body 10 is placed in the outer case body 8. Since the structure is inserted, the fitting shaft 28a1 of the mounting base 28a is inserted into an insertion hole 8b1 (not shown) of the case body 8 described later, and the mounting base 28a is fitted. The shaft 28a2 is loosely fitted to the bearing ring 21a of the inner case body 10, and the connecting shaft 28a3 of the mounting base 28a is loosely fitted to the square hole of the shaft portion 14c and the square hole of the small shaft portion 14c1, respectively. The mounting bolt 29 may be screwed into the screw holes of the fitting shafts 28a1, 28a2 and the connecting shaft 28a3 of the mounting base 28a from the upper bottom surface 27 side of the arm 20. At this time, the mounting bolt 29 is configured such that its head is embedded in the stepped hole 27a, while the tip of the threaded portion of the mounting bolt 29 does not protrude from the small shaft portion 14c1 side of the rotating piece 14. Screwed (see FIG. 3).

  Next, the outer case body 8 and the outer case side plate 9 will be described. The outer case main body 8 is an elongated, thin, hollow, substantially rectangular parallelepiped member that is open on one side surface in the longitudinal direction, and this member includes a housing formed by the inner case main body 10 and the inner case upper plate 11 described above. Is stored. The upper case body 8a and the lower plate body 8b of the outer case body 8 are inserted through holes (upper fitting) in a manner corresponding to the insertion holes 11a of the inner case upper plate body 11 and the insertion holes 10a6 of the inner case body 10. Hole 8a1 and insertion hole (lower fitting hole) 8b1 are provided (however, only the insertion hole 8a1 is depicted in FIG. 2), the guide groove 11d of the inner case upper plate 11 and the inner case body 10 The guide groove 8a2 and the guide groove 8b2 are provided in a manner corresponding to the guide groove 10a5 (however, only the guide groove 8a2 is illustrated in FIG. 2). In the vicinity of the guide groove 8a2 and the guide groove 8b2, scales as shown in FIGS. 2 and 3 are engraved for the convenience of adjusting the biasing force of the spring 16, respectively. In addition, square notches 8a3 and 8a4 are provided at predetermined intervals at the long side end of the upper plate 8a facing the opening of the outer case body 8, and at the long side end of the lower plate 8b. Square cutouts 8b3 and 8b4 are provided at intervals, and the cutout 8a3 and cutout 8b3 are provided in such a manner that the cutout 8a4 and cutout 8b4 face each other. Furthermore, a circular operation hole 8c1 is provided on the side plate 8c of the outer case body 8 facing the side plate 10c of the inner case body 10 provided with the operation hole 10c2, in a manner corresponding to the operation hole 10c2. It has been. The two holes provided in the upper plate body 8a and the lower plate body 8b are bolt holes for attaching the apparatus main body 6 including the outer case main body 8 and the like to the upper frame body 2.

  The outer case side plate 9 is a rectangular thin plate-like member assembled as a side plate of the outer case main body 8, and the outer case main body 9 is attached to both long side end portions on the back surface of the outer case side plate 9. Locking claws 9a1 and 9a2 project from the notches 8a3 and 8a4, and latching claws 9a3 and 9a4 project from the notches 8b3 and 8b4 of the outer case body 8. By locking these locking claws 9a1 and the like to the notch 8a3 and the like, the casing formed by the outer case main body 8 and the outer case side plate 9 as shown in the reference view of FIG. 2 is assembled. Then, the assembly of the apparatus main body is completed by connecting the rotating piece 14 in the casing and the arm 20 outside the casing with the mounting bolt 29 to the casing thus assembled. (See FIG. 3).

Next, the guided member 7 according to the present embodiment will be described with reference to FIGS.
The guided member 7 is composed of a small block member 30 whose appearance is substantially an isosceles triangle in plan view, and a portion corresponding to the base of the isosceles triangle is attached to the door body A, while the isosceles triangle In an insertion hole (not shown) provided in the vicinity of a portion corresponding to the apex, an elongated cylindrical slider 31 having a stop ring 32 fitted at the lowermost end thereof is loosely inserted. When an external force is not applied to the slider 31, the upper end portion of the slider 31 is urged by a spring (not shown) interposed in the insertion hole. 30a, and the stop ring 32 is locked to the lower surface 30b of the block member 30, but when an external force acts on the slider 31, the slider 31 resists the biasing force of the spring. The stop ring 32 is pushed down, and the stop ring 32 is released (see FIG. 7).

Next, the operation of the door closing device 1 will be described with reference to FIGS.
For convenience of explanation, first, an outline of the operation of the apparatus 1 will be described with reference to FIG.
When the door body A is opened in a state where the apparatus main body 6 and the guided member 7 are not engaged as shown in FIG. 1, the arm 20 of the apparatus main body 6 is connected to the slider of the guided member 7. 31 is held at an angular position adapted to a predetermined closing angle that can be engaged with 31. When the handle of the door body A is gripped and closed from this state, the door body A immediately before the closing operation of the apparatus 1, that is, the position shown in FIG. When the angle reaches about 15 °, the slider 31 starts to engage with the guide groove 27c of the arm 20, and thereafter, the slider 31 extends along the guide groove 27c of the arm 20. In synchronism with the relative movement, the door body A is automatically and decelerated and silently closed even when a large closing speed is given, as will be described later, and the state shown in FIG. . Conversely, when the door body A is opened from the state shown in FIG. 6B through the state shown in FIG. 6A, a force may be applied to the handle after grasping the handle of the door body A and releasing the latch. . At this time, as described above, the door body A can be opened without increasing the force applied to the handle of the door body A by the mounting positions of the apparatus main body 6 and the guided member 7, and the damper 19 is further described as will be described later. The force applied to the handle of the door body A can be reduced by the action of promoting the rotation of the arm 20.

Next, a mechanism for enabling the operation shown in FIG. 6 of the apparatus 1 will be described with reference to FIGS. However, the door body A and the guided member 7 are not shown in FIGS.
4A shows a state immediately before the closing operation of the apparatus 1 as in FIG. 6A. The arm 20 of the apparatus main body 6 is engaged with the slider 31 of the guided member 7. It shows a state in which it is held at an angular position adapted to a predetermined closing angle that can be combined. At this time, the rotating piece 14 is in contact with the slider 15 on the inclined surface 15a2 side of the slider 15 from the small rotor 23 of the rotating piece 14, and from the spring 16 via the slider 15, FIG. The second arm portion 14b of the rotating piece 14 abuts on the distal end surface 12b1 of the left fixed block 12, and receives a counterclockwise moment from the left fixed block 12. The arm 20 is held at an angular position adapted to the predetermined closing angle. On the other hand, in the present embodiment, the damper 19 is set so as not to exert a force on the second arm portion 14b via the slider 18.
Then, when a force is applied to the handle to close the door body A in order to cause the device 1 to start the closing operation from the state of FIG. 4A, the rotating piece 14 becomes smaller than the rotating piece 14. The rotor 23 gets over the apex 15a1 of the slider 15 and comes into contact with the slider 15 on the inclined surface 15a3 side, that is, the state shown in FIG. 4B. In this state, the rotating piece 14 rotates counterclockwise in FIG. 4B by the biasing force of the spring 16 applied via the slider 15 (the biasing force can be adjusted as appropriate by the adjusting means 17). Since the direction moment (arrow direction A1 in the figure) is received, the arm 20 also receives a counterclockwise direction moment (arrow direction A2 in the figure), and the door body A further automatically Goes closed. At this time, the damper 19 brings the side surface 18 a of the second slider 18 into contact with the second arm portion 14 b of the rotating piece 14 and applies a clockwise moment to the rotating piece 14 via the second slider 18. Therefore, the rotational speed of the rotating piece 14 in the counterclockwise direction is suppressed and decelerated. However, when the rotating piece 14 rotates and reaches the state shown in FIG. 5A, the rotating piece 14 is rotated counterclockwise by the biasing force of the spring 16 until reaching the state shown in FIG. 5B. This causes the arm 20 to continue to receive a counterclockwise moment, but the contact portion of the second arm portion 14b of the rotating piece 14 with the slider 18 is inclined to the slider 18. Since it moves to the surface 18a1, the drag from the damper 19 does not act on the rotating piece 14 via the slider 18, and the rotating piece 14 receives a counterclockwise moment. As a result, only a counterclockwise moment acts on the rotating piece 14, so that the door body A is guaranteed to be immersed in the latch hole and a reliable closed state can be obtained.

  5B, the rotating piece 14 receives a counterclockwise moment in FIG. 5B as described above, while the first arm portion 14a of the rotating piece 14 is in the state shown in FIG. Since it contacts the inclined surface 12a1 of the left fixed block 12 and receives a moment in the clockwise direction from the left fixed block 12, the door body is kept closed.

When the door body A is opened from the state shown in FIG. 5B to the state shown in FIG. 4A, the handle of the door body A is grasped, the latch is released, and the slider 15 is attached to the rotary piece 14 in the handle. What is necessary is just to apply the force resisting the urging force of the spring 16 applied through (the urging force can be adjusted as appropriate by the adjusting means 17). The force applied at this time can be reduced as compared with the conventional apparatus 1 in which the mounting positions of the apparatus main body 6 and the guided member 7 are adopted as described above, and the damper 19 is interposed via the slider 18. The arm 20 comes into contact with the second arm portion 14b of the rotating piece 14 and applies a moment in the clockwise direction (arrow direction B1 in FIG. 5A) to the rotating piece 14 in FIG. Is also given a clockwise moment (arrow direction B2 in the figure). Thereby, since it acts so that rotation of the arm 20 in the clockwise direction is promoted, the force applied to the door body A can be further reduced.
When the opening of the door body A proceeds and the engagement between the arm 20 of the apparatus main body 6 and the slider 31 of the guided member 7 is released, the arm 20 can be engaged with the slider 31. Needless to say, the angular position is adapted to a predetermined closing angle.

Next, referring to FIG. 7, the angular position of the arm 20 of the apparatus main body 6 held at the angular position adapted to the predetermined closing angle may change for some reason. A method for returning the arm 20 to the angular position in this case will be described.
In the present apparatus 1, even if the angular position is changed, as shown in FIG. 7A, the door body A is moved in the direction of the arrow (actually, the door body A is closed). Then, the guided member 7 is brought close to the apparatus main body 6, the slider 31 of the guided member 7 is brought into contact with the inclined surface 27d of the arm 20, and the door body A is moved in the direction of the arrow while keeping the contact. Then, as shown in FIG. 7B, the slider 31 protruding from the upper surface 30a of the block member 30 receives the force from the arm 20 and the urging force of the spring interposed in the guided member 7 The lower end portion of the slider 31 protrudes from the lower surface 30b of the block member 30 by a considerable amount pushed down. When the door body A is further moved in the arrow direction while maintaining such a contact state, the slider 31 is loosely inserted into the guide groove 27c of the arm 20 as shown in FIG. . At this time, the protruding portion of the slider 31 from the lower surface 30b is immersed in the insertion hole by the urging force of the spring, and the stop ring 32 is locked to the lower surface 30b.
When the door body A is opened after the slider 31 is loosely inserted into the guide groove 27c of the arm 20 as described above, the opening proceeds through the state shown in FIG. After the engagement between the arm 20 of the main body 6 and the slider 31 of the guided member 7 is released, the angle at which the arm 20 is adapted to a predetermined closing angle at which the engagement with the slider 31 is possible. The arm 20 is returned to the angular position.

  By the way, the arm 20 is attached to the lower plate body 8b side of the outer case main body 8 of the apparatus main body 6 via the mounting base 28a with respect to the door body A for right opening as in the present embodiment. However, in the present apparatus 1, the arm 20 is attached to the upper plate body 8a side of the outer case body 8 of the apparatus main body 6 even with respect to the door body for the left opening. It can respond by attaching it via. Specifically, in the arm 20, the large-diameter fitting shaft 28 a 1 of the mounting base 28 a is inserted into the insertion hole 8 a 1 of the case body 8, and the small-diameter fitting shaft 28 a 2 of the mounting base 28 a is the bearing of the inner case upper plate 11. Further, the connecting shaft 28a3 of the mounting base 28a is loosely fitted to the ring 21b and the square hole of the shaft portion 14c and the small shaft portion 14c1 of the rotating piece 14, respectively. This can be dealt with by screwing the fitting shafts 28a1, 28a2 of the mounting base 28a and the screw holes of the connecting shaft 28a3 from the upper bottom surface 27 side. Therefore, since this apparatus 1 can be used for both the right-opening door and the left-opening door, it is possible to improve the ease of use during installation work.

  The door body closing device according to the present invention is a device structure that can be attached to a frame having a small space because the shock absorber attached to the device body is of a direct acting type so that the device body is made compact. In addition, when the door body is closed, the shock absorber is operated so as to quietly close the door body by reducing the closing speed of the door body, while the door body handle is opened when the door body is opened. Therefore, it can be said that this type of device is widely used in general because it has a device structure that does not require a large force to be applied.

DESCRIPTION OF SYMBOLS 1 Door body closing apparatus 2 Upper frame 5 Hinge 6 Apparatus main body 7 Guided member 8a1 Insertion hole (upper fitting hole)
8b1 insertion hole (lower fitting hole)
10a6 Insertion hole (lower fitting hole)
11a Insertion hole (upper fitting hole)
DESCRIPTION OF SYMBOLS 14 Rotating piece 14a 1st arm part 14b 2nd arm part 16 Spring 17 Adjustment means 18 Slider 18a Inclined surface 19 Damper (buffer device)
20 arm 27b opening 27c guide portion 28a mounting base 28a1, 28a2 fitting shaft 28a3 connecting shaft 31 slider A door

Claims (4)

A door body closing device for closing a door body (A) rotatably attached to a frame body defining an opening of a house or the like via a hinge (5),
An apparatus main body (6) attached to the frame body and a guided member (7) attached to the door body (A), and when the door body (A) is closed, the apparatus main body (6) An arm (20) provided so as to be rotatable in a horizontal direction is engaged with a slider (31) provided at a tip of the guided member (7), and in this state, the arm (20) is attached to the frame. In the door body closing device (1) for guiding the door body (A) to the closed state by rotating the body member side and pulling the guided member (7),
The door body rotates in the closing direction above the side end of the door body (A) where the handle located on the opposite side of the side edge to which the hinge (5) is attached is attached. The guided member (7) that engages with the apparatus main body (6) is attached when a predetermined closing angle is reached after starting the operation, while the guided member (7) of the frame is attached to the guided member (7). Attach the device body (6) to the end position of the corresponding upper frame (2),
The device body (6)
The shaft (14c) is rotatably supported by the apparatus body (6), and the arm (20) is connected to the shaft (14c) so as to rotate integrally therewith. A rotating piece (14);
A spring (16) for urging the rotating piece (14) to rotate the arm (20) in the closing direction of the door body (A);
When closing the door body (A), the arm (20) and the slider (31) do not act on the rotating piece (14) before engaging, and after the engagement, A direct acting shock absorber (19) that acts on the rotating piece (14) to decelerate the closing of the door (A);
A slider (18) that is urged by the shock absorber (19) to abut against the rotating piece (14) so as to decelerate closing of the door body (A),
The contact target portion of the slider (18) with the rotating piece (14) is an inclined surface (18a) inclined in the rotating direction of the rotating piece (14) with respect to the moving direction of the slider (18). ) And a non-inclined surface,
When the door body (A) is closed, the contact portion between the rotating piece (14) and the slider (18) is changed from the non-inclined surface of the slider (18) to the inclined surface (18a). The door body closing device is characterized in that the door body (A) is closed when only the moment in the closing direction acts on the rotating piece (14).   The said shock absorber (19) acts on the said rotation piece (14) in order to promote opening of the said door body (A), when opening the said door body (A). The door body closing device as described.   The door body closing device according to claim 1 or 2, wherein the device body (6) has an adjusting means (17) for adjusting the urging force of the spring (16).   The arm (20) is a substantially rectangular thin plate-like member, and a guide having an opening (27b) through which the slider (31) of the guided member (7) enters and exits on one surface side of the member. The part (27c) is provided along the center line in the longitudinal direction of the member from the end where the opening (27b) is provided to the vicinity of the substantially center of the member. A mounting base (28a) having a connecting shaft connected to the rotating piece (14) is provided near the end opposite to the end provided with the opening (27b). (28a) is provided on the lower surface side of the device body (6) concentrically with the upper fitting hole (8a1) provided on the upper surface side of the device body (6) or the upper fitting hole (8a1). To the lower fitting hole (8b1) having the same shape as the upper fitting hole (8a1). Door body closing device according to any one of claims 1 to 3, characterized in that formed by fitting.

Images