JP5087716B1 - Opening door braking device - Google Patents

Abstract

In an opening door braking device, even if the opening door closes excessively vigorously, the rotation of the opening door in the closing direction is decelerated to prevent generation of an unpleasant collision sound or a finger jamming accident.
When a movable pin 15 of an engaging body A engages with a guide groove 50 of an arm 20 through an opening 49 and tries to enter a main groove 55 with a strong momentum, the movable pin 15 is located at the side of the inlet P of the main groove. Since the groove 60 is open, the piece 46 is fitted into the side groove against the coil spring 47, while the arm is slowly rotated by a braking force applied by a damper via a coaxial rotating cam. Therefore, when the opening door 10 is temporarily stretched, the rotation is stopped, and when the rotation speed drops and becomes slower than the arm, the movable pin is pushed out from the side groove into the main groove by the piece, Thereafter, according to the slow rotation speed of the arm, the opening door that has started to rotate excessively is also decelerated and slowly fully closed.
[Selection] Figure 1

Description

The present invention relates to an open door braking device that prevents a loud collision sound or a finger jamming accident from occurring when the open door is rotated and closed in the closing direction.

  Conventionally, in this kind of opening door braking device, as described in Patent Document 1, the opening door rotates in the closing direction at the upper end of the opening door to reach the angular position of a predetermined closing angle immediately before full closing. Attach a guided member that engages with the main body of the device, and assemble the main body of the device at the corresponding position on the door frame side where the guided member engages. An arm having a guide groove that guides a guided member that engages with the distal end portion to enable movement along with opening and closing of the opening door, and the arm is engaged with the guided member before the engagement. A spring for applying an urging force to hold the arm at an angular position adapted to a predetermined closing angle that can be combined, and an urging force that rotates the arm in the closing direction of the door after the engagement, Turn the arm so that the rotational speed is decelerated against the biasing force of the spring. A buffer mechanism acting on the shaft and an arm adapted to a predetermined closing angle so that the guided member engages with the guide groove of the arm when the arm is not held at an angular position adapted to the predetermined closing angle. Auxiliary means for holding at the angular position is provided, and when closed, the guided member usually starts to engage with the guide groove of the arm when it reaches the angular position of the predetermined closing angle immediately before the opening door is fully closed. After that, in synchronization with the relative movement of the guided member along the guide groove of the arm, the buffer mechanism applies a braking force to the rotating shaft to decelerate the rotation of the opening door, and the arm is closed by the spring biasing force. There is a structure that fully rotates while pulling and opening the door.

  When the door is closed, in the conventional door-opening braking device, if the arm is not held at an angular position adapted to the predetermined closing angle for some reason, the opening means is opened after that when the door is closed. When the door is closed, a normal state, that is, a state where the arm is held at an angular position adapted to a predetermined closing angle is set.

JP 2006-283460 A JP 2009-287237 A

  However, conventionally, the opening door braking device as described above, when the opening door closes excessively for some reason, the guided member engages with the guide groove to rotate the arm, but this is a rapid rotation. As a result, no braking force is generated in the buffer mechanism and it does not act on the rotating shaft of the arm. As a result, the opening door does not decelerate and eventually closes vigorously, resulting in the occurrence of a loud collision sound and a finger jamming accident. There was a problem that the occurrence could not be prevented.

  Therefore, the invention according to claim 1 is related to the apparatus main body B when the opening door 10 rotates in the closing direction and reaches the angle position of the predetermined inclination angle immediately before the full closing, as shown in the following illustrated embodiment. A mating engagement body A is attached to one of the door frame 11 or the opening door 10, while the apparatus main body B is assembled at a corresponding position where the engagement body A engages on the other side. An arm 20 having a guide groove 50 which has a base end portion rotatably connected around a pivot 25 and guides the engaging body A engaged from the distal end portion to enable movement along with opening and closing of the opening door 10; The arm 20 is held at a standby angle position adapted to the predetermined inclination angle that can be engaged with the engagement body A before the engagement, and the arm 20 is rotated in the closing direction after the engagement. The arm 20 is energized to pull the opening door and the arm 20 When the arm 20 is not held at a standby angle position adapted to the predetermined inclination angle, the opening door braking device R · R ′ applies a braking force to decelerate the opening door 10 that rotates in the closing direction. In the open door braking device R · R ′ provided with reset assisting means S for returning the arm 20 to a standby angle position adapted to the predetermined inclination angle so that the engaging body A engages with the guide groove 50, The arm 20 includes an opening 49 that guides the guide groove 50 along the arm length direction from an opening 49 that guides the distal end portion of the engaging body A that enters and exits as the door 10 is opened and closed. The side groove 60 is recessed in the groove wall of the entrance P of the main groove, and the piece 46 is fitted into the side groove 60 so as to be able to advance and retreat with an elastic material sandwiched in the back side. And

  According to a second aspect of the present invention, in the open-door braking device R · R ′ according to the first aspect, the reset assisting means S is provided in the guide groove of the arm 20, for example, as shown in the following embodiment. 50, the lower end edge 75a is gradually inclined toward the groove side wall of the main groove 60, and the guide surface 75 is brought into contact with the guide surface 75 that abuts when the door is closed. The movable pin 15 of the engagement body A that engages with the main groove 55 when passing through the lower end edge 75a of the guide surface 75, and a biasing force that resists the lowering of the movable pin 15 are applied to the movable pin 15. And the urging spring 17 of the engaging body A.

  According to a third aspect of the present invention, in the opening door braking device R • R ′ according to the first aspect, the reset assisting means S is provided in the guide groove of the arm 20, for example, as shown in the following embodiment. 50, a movable wall 85 having a slope 85b whose upper edge 85a is gradually inclined toward the main groove 55, and the movable wall 85 along the slope 85b that abuts when the opening door is closed. The fixed pin 80 of the engaging body A that engages with the main groove 55 when passing down the upper end edge 85a and the urging force against the lowering of the movable wall 85 are applied to the movable wall 85. It is characterized by comprising an urging spring 90.

  According to the first aspect of the present invention, when the opening door is closed excessively vigorously, when the opening door rotates in the closing direction and reaches the angular position of the predetermined inclination angle immediately before the full closing, the engaging body is armed. The guide groove is inserted through the opening and hits the groove side wall of the main groove entrance.At that time, when trying to enter the main groove with momentum, the side groove is open at the main groove entrance. The front end portion of the engaging body is fitted into the side groove against the elastic member. Then, the braking force is applied to the arm at that time, and the arm decelerates and rotates slowly. Therefore, the arm stops rotating while the open door is stretched temporarily, and the rotation speed decreases following the slow speed of the arm. Then, the engaging body is pushed into the main groove by the piece from the side groove and engaged, and after that, the opening door that started rotating excessively at the beginning is also relative to the engaging body along the main groove of the arm. The rotation in the closing direction is decelerated in synchronization with the movement, and it closes slowly and quietly. As a result, an unpleasant collision sound or finger jamming accident occurs even if the door closes excessively vigorously. Can be prevented.

  According to the second aspect of the present invention, when the opening door is closed when the arm is not held at the standby angle position adapted to the predetermined inclination angle for some reason at the time of closing, the reset assisting means operates, The combined movable pin descends against the biasing spring along the inclined guide surface of the arm, and engages with this groove when it passes over the lower edge of the guide surface. When the engagement body is disengaged from the guide groove of the arm that rotates with the opening operation, the arm is held at the angular position adapted to the original predetermined inclination angle at the disengaged position. Thereafter, when the opening door is closed, it is possible to improve the usability so that the normal state, that is, the arm is held at the standby angle position adapted to the predetermined inclination angle.

  According to the third aspect of the present invention, when the arm is not held at the standby angle position adapted to the predetermined inclination angle for some reason at the time of closing, the opening door is closed, and the fixing pin of the engaging body is When it hits the slope of the movable wall, the reset auxiliary means works, and the fixed pin moves down the movable wall along the slope against the biasing spring and engages with this groove when it passes over the upper edge of the movable wall. Then, when the opening door is opened after that, when the engagement body is released from the guide groove of the arm that rotates in accordance with the opening operation, the arm is adapted to the original predetermined inclination angle at the position where the engagement is released. Therefore, when the door is closed after that, the normal state, that is, the arm is held at the standby angle position adapted to the predetermined closing angle, so that it is easy to use. can do.

(A) It is explanatory drawing which shows the temporary stop state of the open door which closed the forcefully closed door brake device concerning the 1st embodiment of the present invention from the bottom, and (B) is the elements on larger scale. It is a perspective view which shows the door structure to which the opening door brake device is applied in the open state of the opening door. It is a disassembled perspective view of an engaging body. It is a disassembled perspective view of an apparatus main body. It is operation | movement explanatory drawing which shows operation | movement of an apparatus main body divided in steps seeing from the bottom. It is a disassembled perspective view which shows an arm seeing from diagonally upward. It is a disassembled perspective view which shows an arm seeing from diagonally downward. It is explanatory drawing which shows the operation | movement before engagement of the movable pin of an opening door brake device seen from the bottom. It is explanatory drawing which shows the operation | movement just before this groove | channel engagement of the movable pin of the apparatus seen from the bottom. (A) Explanatory drawing which shows the operation | movement immediately after this groove | channel approach of the movable pin of the apparatus seen downward, (B) It is the elements on larger scale. It is explanatory drawing which looks down and shows the state when the opening door of the apparatus is fully closed. (A) Explanatory drawing which shows the state which the movable pin of the apparatus fits into a side groove | channel, and shows (B) the partial enlarged view. (A) Explanatory drawing which shows the state which pushes out the movable pin of the apparatus from a side groove, and (B) is the elements on larger scale. It is a longitudinal cross-sectional view which shows the state before engagement of the movable pin of the opening door brake device which concerns on the 2nd Embodiment of this invention. It is a disassembled perspective view which shows the arm which concerns on the same embodiment seeing from diagonally upward. It is a disassembled perspective view which shows the arm which concerns on the same embodiment seeing from diagonally downward. It is a longitudinal cross-sectional view which shows operation | movement of the movable pin of the opening door brake device which concerns on the same embodiment in steps. It is a longitudinal cross-sectional view which shows the operation | movement performed when the movable pin of the opening door brake device which concerns on the embodiment closes an opening door vigorously. It is a perspective view which shows the door structure which applied the opening door braking device which concerns on the 3rd Embodiment of this invention in an open state of an opening door by which an arm is hold | maintained in parallel with the upper frame part of a door frame. It is a longitudinal cross-sectional view which shows the operation | movement which the reset auxiliary | assistant means based on the embodiment works, and returns the arm to the standby angle position which adapted to the predetermined inclination angle in steps (A) to (D). Similarly, it is a plan view showing steps (A) to (D) in steps of returning the arm to the standby angle position adapted to the predetermined inclination angle by the reset assisting means working. It is a perspective view which shows the door structure to which the opening door braking device which concerns on the 4th Embodiment of this invention is applied in the open state of the opening door with which the arm was hold | maintained at the standby angle position which adapted the predetermined inclination angle. It is a perspective view which shows the apparatus main body of the opening door brake device which concerns on the same embodiment. It is a perspective view which shows the door structure which concerns on the embodiment in an open state of an open door by which an arm is hold | maintained in parallel with an open door. It is a longitudinal cross-sectional view which shows the operation | movement which the reset auxiliary | assistant means which concerns on the same embodiment act | operates, and returns the arm to the standby angle position adapted to the predetermined inclination angle in steps (A)-(D). Similarly, it is a plan view showing steps (A) to (D) in steps of returning the arm to a standby angle position adapted to a predetermined inclination angle by the reset assisting means working.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 (A) is an explanatory view showing a temporarily stopped state of an open door that is closed vigorously of the open door braking device according to the first embodiment of the present invention, and (B) is a partially enlarged view thereof. FIG. 2 is a perspective view showing the door structure to which the opening door braking device is applied in the opening state of the opening door. The door structure D is a so-called right-opening door in which a rectangular panel-shaped opening door 10 is attached to a vertical frame portion 11a on the right suspension side of the door frame 11 by a hinge 19 so as to be freely rotatable. It has a self-contained structure. Therefore, the opening door braking device R of the present invention includes an engagement body A attached to the upper end of the door tip opposite to the suspension side of the opening door 10 and an upper frame corresponding to the engagement body A when the opening door 10 is closed. It is comprised with the apparatus main body B assembled | attached near the vertical frame part 11c of the part 11b.

  As shown in FIG. 3, the engagement body A includes a mounting bracket 14 attached to the opening door 10 and a movable pin 15 held by the mounting bracket 14. The mounting bracket 14 includes a rectangular plate-shaped mounting seat 14a with a screw hole and a rectangular parallelepiped-shaped support rod 14b protruding perpendicularly from the mounting seat 14a. The support rod 14b has a guide hole 16 formed through a stepped hole in accordance with the outer shape of the movable pin 15 at the tip. The movable pin 15 is composed of a tip portion 15a whose tip is tapered in a mortar shape, and a spring winding shaft 15b on the base end side that is one step smaller in diameter than the tip portion 15a.

  Therefore, the engagement body A is inserted into the guide hole 16 from the projecting port 16a of the support rod 14b after the spring winding shaft 15b around which the urging spring 17 made of a coil spring is wound, and then is pulled out to the base end of the spring winding shaft 15b. The movable ring 15 is normally urged upward by the urging spring 17 by engaging the retaining ring 18, and the distal end portion 15 a protrudes from the protrusion 16 a so that it can be pushed down against the urging force of the urging spring 17. In this state, the guide hole 16 is retained and retained and assembled. Then, the mounting seat 14 a of the mounting bracket 14 is opened with the front end 15 a of the movable pin 15 facing upward, and is screwed to the upper end of the door 10.

  As shown in FIG. 4, the apparatus main body B includes a brake unit C and an arm 20 that is rotatably connected to the brake unit C. As shown in FIG. 5 (A), the brake unit C has fixed blocks 21 and 22 fixed to the left and right ends of the body case 29 in a rectangular parallelepiped box shape. The first cam is slidably disposed between the rotating cam 30 on which the pivot shaft 25 is rotatably supported by the main body case 29, and the first locking projection 30 a of the rotating cam 30 and the fixed block 22. The slider 23, the biasing spring 35 of the coil spring that urges the first slider 23 toward the fixed block 21 and presses it against the first locking projection 30a, and the second locking projection 30b of the rotating cam 30 A second slider 24 slidably disposed at a position where one side is pressed, and a damper disposed while the piston rod 40a is pressed against the other side of the second slider 24 and the cylinder 40b is in contact with the fixed block 22 40 are arranged together.

  The pivot cam 30 is formed by forming a pivot 25 on the same axis with a cylindrical portion 25a on the upper end side and a rectangular column portion 25b having a rectangular cross section on the lower end side, and branching from the cylindrical portion 25a at an angle of approximately 90 degrees in the radial direction. The 1st and 2nd latching convex parts 30a * 30b are protrudingly provided. Therefore, the rotating cam 30 is pivotally attached to the main body case 29 via a bearing in the cylindrical portion 25a of the pivot 25, and, as shown in FIG. 4, the prismatic portion 25b from the shaft hole 29a opened in the main body case 29. It is made to protrude.

  As shown in FIG. 5 (A), the first slider 23 has inclined surfaces r1 and r2 that are tapered with a predetermined inclination angle from the apex r on the side where the first locking projection 30a of the rotating cam 30 abuts. Is formed. The second slider 24 is formed with a flat end surface q1 on one side from the intermediate point q and a slope q2 having a predetermined inclination angle on the other side on the side where the second locking projection 30b of the rotating cam 30 abuts. Has been.

  The damper 40 includes two cylinders juxtaposed in the illustrated example, each of which includes a cylinder 40b in which a viscous liquid is sealed, a piston disposed in the cylinder 40b so as to be capable of linear reciprocation, and a piston fixed to the base end, while a front end side shaft. A piston rod 40a that protrudes from the inside of the cylinder 40b and has a tip abutting against the other end surface 26 of the second slider 24. When the piston rod 40a is pushed into the second slider 24, the piston rod 40a is controlled by the viscous resistance of the viscous liquid. Power is generated and exerted on the second locking projection 30b of the rotating cam 30.

  As shown in FIGS. 1, 4, 6, and 7, the arm 20 includes an arm main body 45, a piece piece 46, and a coil spring 47 made of an elastic material.

  The arm body 45 is a long, thick resin plate whose base end 45a is semicircular, and a rectangular bearing hole 31 is formed on the base end 45a so as to correspond to the rectangular column 25b of the pivot 25 of the rotating cam 30. On the other hand, a guide groove 50 for guiding the movable pin 15 of the engaging body A is formed in the lower surface in the drawing at the tip 45b while being drilled in the thickness direction.

  The guide groove 50 opens a large end face of the distal end portion 45 b of the arm body 45, opens an opening 49 that guides the distal end portion 15 a of the movable pin 15 that enters and exits with the opening / closing operation of the opening door 10, and the arm body 45 from the opening 49. The main groove 55 is recessed along the arm length direction, and the side groove 60 is provided in the main groove 55. The opening 49 is tapered with respect to the length direction of the arm main body 45 along a track along which the distal end portion 15 a of the movable pin 15 enters and exits. Therefore, the arm 20 is provided with an opening 49 so that the open door can be used with either a right opening or a left opening. A gradient is formed along the orbit in which the door is engaged, so that the opening width becomes narrower toward the downstream side in the engagement direction. In the guide groove 50, the opening 49 has a lower surface formed of an inclined surface 49a with the plate thickness being reduced as the upper opening edge 45c is directed to the end edge. Accordingly, when the movable pin 15 is engaged with the opening 49 in accordance with the closing operation of the opening door 10, the tip portion 15a is brought into the inclined surface 49a so that the protruding end of the resilient movable pin 15 does not collide with the upper opening edge 45c. You can guide along.

  The side groove 60 is opened on the groove side wall 55a on one side at the entrance P of the main groove 55 through which the distal end portion 15a of the movable pin 15 is engaged through the opening 49. In order to be able to do so, it is also opened on the groove side wall 55b on the other side. The side groove 60 is composed of a semi-cylindrical pin receiving recess 60a and a spring receiving recess 60b on the back side, respectively, into which the distal end portion 15a of the movable pin 15 is fitted. Further, as shown in FIG. 6, in the side groove 60, a part insertion port 36 communicating with the main groove 55 is opened on the upper surface 45 b of the arm body 45. Therefore, the side groove 60 is fitted with a coil spring 47 on the rear end face 46b from the component insertion port 36 to the pin receiving recess 60a, and a substantially semi-cylindrical piece 46 is fitted so as to be able to advance and retreat. 46 is urged from the back side to the main groove 55 side by a coil spring 47, and the flat front end face 46a is positioned and held at a position flush with the groove side walls 55a and 55b. The arm 20 is assembled by fitting the cover plate 37 to the mounting step 45e provided in the component insertion port 36 on the upper surface 45d. Although the coil spring 47 is used as the elastic material, the present invention is not limited to this, and other spring materials, rubber members, and various elastic members can be used.

  Therefore, the arm 20 has the guide groove 50 facing downward, and fits the prism 25 b of the pivot 25 of the pivot cam 30 into the bearing hole 31 of the arm body 45 and is fixed by the set screw 38 as shown in FIG. By doing so, it connects with the rotation cam 30 by the side of the brake unit C so that integral rotation is possible, and, thereby, the apparatus main body B is assembled. The apparatus main body B has the main body case 29 of the brake unit C close to the vertical frame portion 11c of the upper frame portion 11b of the door frame 11, and the opening angle of the door 10 rotates in the closing direction and has a predetermined inclination angle immediately before full closure. When the angular position is reached, the tip 15a of the movable pin 15 of the engagement body A is assembled at a position where it engages with the opening 49 of the guide groove 50 of the arm 20. Therefore, in the apparatus main body B, when the opening door 10 in which the movable pin 15 is not engaged with the guide groove 50 is opened, the arm 20 is a predetermined opening door 10 in which the distal end portion 15a can engage with the opening 49 of the guide groove 50. Hold at an angular position adapted to the tilt angle and wait. At that time, as shown in FIG. 5A, the rotating cam 30 has the first locking projection 30a abutting against the first slider 23 on the inclined surface r1 side, and the biasing spring 35 via the first slider 23. Therefore, the arm 20 is held at an angular position adapted to a predetermined inclination angle of the door 10.

  Now, in the opening door braking device R, normally, when the opening door 10 is closed, the opening door 10 is rotated in the closing direction X as shown in FIG. The movable pin 15 of the engagement body A is engaged through the opening 49 into the guide groove 50 of the arm 20 held at an angular position adapted to the predetermined inclination angle, and the inlet P of the main groove 55 as shown in FIG. 10 and then enters the main groove 55 as shown in FIG. 10, and thereafter, the hinged door 10 is synchronized with the relative movement of the movable pin 15 along the main groove 55 of the arm 20. As described below, the rotation in the closing direction X is decelerated and the valve is slowly and quietly closed.

  That is, when the opening door 10 is closed, as shown in FIG. 5 (B), the rotating cam 30 has the first locking projection 30a over the apex r of the first slider 23 and the first on the inclined surface r2. Then, the rotating cam 30 receives a counterclockwise moment in the figure by the urging force of the urging spring 35 applied via the first slider 23, so that the arm 20 also counteracts. In response to the clockwise moment, the opening door 10 automatically closes. At this time, the damper 40 has the second locking projection 30b of the rotating cam 30 abutted against the end surface q1 of the second slider 24. In contact therewith, a moment in the clockwise direction is applied to the rotating cam 30 via the second slider 24, so that the counterclockwise rotation speed of the rotating cam 30 is suppressed and decelerated.

  However, as shown in FIG. 5C, the rotating cam 30 continues to receive a counterclockwise moment as it is by the biasing force of the biasing spring 35, and thus the arm 20 also continues to receive a counterclockwise moment. However, as shown in FIG. 5D, the contact target portion of the second locking projection 30b of the rotating cam 30 with the second slider 24 shifts to the slope q2 side of the second slider 24. A braking force based on viscous resistance from the damper 40 does not act on the rotating cam 30 via the second slider 24. Accordingly, only a counterclockwise moment due to the spring biasing force of the biasing spring 35 acts on the arm 20 via the rotating cam 30, and the arm 20 rotates so as to attract counterclockwise. The movable pin 15 is also moved so that the main groove 55 of the guide groove 50 can be drawn to the back side. As a result, even if the opening door 10 is fully closed, it is slowly stopped as shown in FIG. Can be closed.

  By the way, the opening door 10 may be closed excessively vigorously. When the opening door 10 is closed excessively in such a manner, in the opening door braking device R, the opening door 10 rotates in the closing direction X as shown in FIG. When reaching the angle position of the inclination angle, the movable pin 15 of the engagement body A enters the guide groove 50 of the arm 20 through the opening 49 and hits the groove side wall 55a of the inlet P of the main groove 55 as shown in FIG. However, when trying to enter the main groove 55 with momentum at that time, the side groove 60 is open at the entrance P of the main groove 55, so that the tip 15a of the movable pin 15 is, as shown in FIG. The piece 46 is fitted into the pin receiving recess 60 a of the side groove 60 against the coil spring 47. At that time, as shown in FIG. 5 (B), the arm 20 is decelerated by the braking force applied by the damper 40 via the coaxial rotating cam 30, and slowly rotates. As described above, when the movable pin 15 enters the side groove 60 of the arm 20, the opening door 10 stops rotating while being stretched temporarily, and the rotational speed decreases following the slow speed of the arm 20. When the rotational speed of the hinged door 10 becomes slower than the arm 20, the movable pin 15 is pushed out from the pin receiving recess 60 a of the side groove 60 into the main groove 55 by the piece piece 46 as shown in FIG. 13. When the movable pin 15 engages with the main groove 55, the arm 20 thereafter decelerates due to the braking force applied by the damper 40 via the rotating cam 30, and rotates slowly. Accordingly, the opening door 10 which has started to rotate excessively vigorously is decelerated in the closing direction X in synchronization with the relative movement of the movable pin 15 along the main groove 55 of the arm 20, and slowly and quietly as shown in FIG. As a result, even if the door opens excessively vigorously, it is possible to prevent an unpleasant collision sound or a finger jamming accident from occurring.

  By the way, in the illustrated embodiment described above, in the arm 20, the side groove 60 of the guide groove 50 is opened in the groove side walls 55 a and 55 b of the inlet P of the main groove 55, but the side groove is formed in the inlet P of the main groove. What is necessary is just to provide indentation, and it can also be set as the structure dented in the bottom wall 55c of the same entrance P of this groove | channel 55, for example, as shown in FIG.14, FIG.15, FIG. In the second embodiment, the same components as those in the first embodiment will be described with the same reference numerals.

  In the second embodiment, the guide groove 50 of the arm 20 ′ has the main groove 55 recessed along the length direction of the arm main body 45 from the opening 49 where the end face of the tip 45 b of the arm main body 45 is largely opened. A side groove 65 is provided on the bottom wall 55 c on the upper side of the main groove 55 in the figure so as to overlap the main groove 55. The side groove 65 is composed of a rectangular pin receiving recess 65a in front of the front end 15a of the movable pin 15 and a spring receiving recess 65b having a narrow width on the back side. In the side groove 65, the piece piece 70 is housed by mounting a coil spring 47 on the back surface from the component insertion port 36 to the pin receiving recess 65 a. The piece 70 is formed of a substantially rectangular resin piece having a tapered surface 70a in part in accordance with a mortar-like tapered tip shape of the tip 15a of the movable pin 15.

  Therefore, the arm 20 'normally urges the piece 70 from the back side to the opening 49 side by the coil spring 47, and as shown in FIG. 14, the piece 70 has a tapered surface 70a and an end surface 55d of the bottom wall 55c. Position and hold at the same level. Then, the cover plate 37 is fitted into the component insertion port 36 to assemble the arm 20 '. The arm 20 ′ has a guide groove 50 facing downward, and is connected to the rotation cam 30 on the brake unit C side so as to be integrally rotatable. When the opening door 10 where the movable pin 15 is not engaged with the guide groove 50 is opened, the arm 20 ′ The distal end portion 15a of the movable pin 15 of the combined A is positioned and held at an angular position adapted to a predetermined inclination angle of the opening door 10 that can be engaged with the opening 49 of the guide groove 50.

  Now, in the opening door braking device R ′ of the other example shown in the figure, when the opening door 10 is normally closed, the opening door 10 is rotated in the closing direction, and when the angle position of the predetermined inclination angle immediately before the fully closing is reached, the opening door 10 is predetermined. The movable pin 15 of the engaging body A is engaged through the opening 49 into the guide groove 50 of the arm 20 ′ held at an angular position adapted to the inclination angle, and comes into contact with the inlet P of the main groove 55. As shown in FIG. 6A, the tip 15a of the movable pin 15 contacts the tapered surface 70a of the piece 70. At that time, the rotation speed of the arm 20 ′ is suppressed by the damper 40 and the biasing spring 35. Since it rotates slowly, the movable pin 15 of the engagement body A is pushed down against the urging spring 17 as shown in FIG. As shown in order in (D), the main groove 55 is entered. After that, in synchronization with the relative movement of the movable pin 15 along the main groove 55 of the arm 20, the opening door 10 is slowly and gently closed as the rotation in the closing direction is reduced as it is. Then, when the braking force from the damper 40 no longer acts on the arm 20 ′, the spring urging force of the urging spring 35 acts on the arm 20 ′ via the rotating cam 30, thereby causing the movable pin of the engagement body A to move. 17 (E), the main groove 55 of the guide groove 50 is moved so as to be drawn to the back side, and as a result, the opening door 10 is reliably stopped without being stopped halfway. Can be fully closed slowly.

  Now, when the opening door 10 is closed excessively vigorously, in the opening door braking device R ′ of the other example shown in the drawing, the opening door 10 rotates in the closing direction at the same time, and the predetermined inclination angle immediately before the full closing is obtained. , The movable pin 15 of the engagement body A engages with the guide groove 50 of the arm 20 ′ through the opening 49 and hits the groove side wall 55a of the inlet P of the main groove 55 at the contact position P. At that time, when trying to enter the main groove 55 with momentum, since the side groove 65 is opened in the bottom wall 55c of the inlet P of the main groove 55, the tip portion 15a of the movable pin 15 is shown in FIG. As shown, the piece 70 is fitted into the pin receiving recess 65 a of the side groove 65 against the coil spring 47. At that time, as shown in FIG. 5B, the arm 20 is decelerated by the braking force applied by the damper 40 via the coaxial rotating cam 30 and slowly rotates. When the movable pin 15 enters the groove 65, the distal end portion 15a comes into contact with the end surface 55d of the bottom wall 55c, and the rotation of the opening door 10 is stopped in a temporarily stretched state, following the slow speed of the arm 20. The speed drops.

  Then, when the rotation speed of the opening door 10 becomes slower than that of the arm 20 ′, the tip 15 a of the movable pin 15 is separated from the pin receiving recess 65 a of the side groove 65 as shown in FIGS. 18B and 18C in order. 70 is pushed down into the main groove 55 and enters the main groove 55. After that, the door 10 that has started to rotate vigorously in synchronization with the relative movement of the movable pin 15 along the main groove 55 of the guide groove 50 of the arm 20 is slowed down as the rotation in the closing direction is reduced as it is. When the arm 20 'is closed gently and the braking force from the damper 40 does not act on the arm 20', the spring biasing force of the biasing spring 35 acts on the arm 20 'via the rotating cam 30, and thereby the engagement body A As shown in FIG. 17E, the movable pin 15 is moved so that the main groove 55 of the guide groove 50 can be drawn to the back side, so that the opening door 10 is stopped halfway even when it is fully closed. Therefore, it is possible to reliably close the valve slowly and as a result, it is possible to prevent the occurrence of an unpleasant collision sound and a finger jamming accident.

  By the way, in 1st and 2nd embodiment mentioned above, the opening door brake device R * R 'is provided with the reset auxiliary means S, and the arm 20 * 20' is held at the standby angle position adapted to the predetermined inclination angle for some reason. When not, the reset auxiliary means S is operated to return the arms 20 and 20 'to the standby angle position adapted to the predetermined inclination angle so that the engaging body A engages with the guide groove 50. . In the present embodiment, the arm 20 and the engagement body A provided in the opening door braking device R according to the first embodiment are used, and the reset assisting means S is formed on the arm 20 and the engagement body A. Accordingly, in the following third embodiment, the same components as those in the first embodiment will be described with the same reference numerals.

  As shown in FIG. 4, the arm 20 is inclined so that the lower edge 75 a gradually approaches the groove side wall of the main groove 55 toward the opening 49 of the both side portions 45 f and 45 g along the guide groove 50 of the arm body 45. The guide surface 75 is formed. The guide surface 75 is formed on both side portions 45f and 45g of the arm main body 45 so that the free door can be used with either a right opening or a left opening.

  As shown in FIGS. 2 and 3, the engaging body A uses the movable pin 15 and an urging spring 17 comprising a coil spring, and the urging spring 17 is wound around the spring winding shaft 15b on the base end side. The movable pin 15 is retained in the guide hole 16 in a state in which the distal end portion 15a projects from the projecting opening 16a of the mounting bracket 14 so as to be able to be pushed down against the upward biasing force of the biasing spring 17. Then, the mounting seat 14 a of the mounting bracket 14 is opened with the front end 15 a of the movable pin 15 facing upward, and is screwed to the upper end of the door 10.

  Therefore, the opening door braking device R is used when the arm 20 is not held at the standby angle position adapted to the predetermined inclination angle for some reason, that is, as shown in FIG. When the state becomes parallel to the portion 11b, the reset assisting means S works to return the arm 20 to the standby angle position adapted to the predetermined inclination angle so that the engaging body A engages with the guide groove 50.

  At that time, the reset assisting means S, when the opening door 10 is closed as shown in FIGS. 20 (A) and 21 (A), with the arm 20 in a state parallel to the upper frame portion 11b of the door frame 11. The distal end portion 15a of the movable pin 15 approaches the right-handed guide surface 75 on one side of the arm 20, and the distal end portion 15a of the movable pin 15 is guided to the guide surface as shown in FIGS. 20 (B) and 21 (B). 75 abuts. When the opening door 10 is rotated in the closing direction, the tip 15a of the movable pin 15 descends along the guide surface 75 against the urging force of the urging spring 17, and FIGS. As shown in FIG. 20C, when the lower end edge 75a of the guide surface 75 is passed, the main groove 55 of the guide groove 50 of the arm 20 is engaged as shown in FIGS.

  When the movable pin 15 engages with the main groove 55 in this way, thereafter, when the opening door is opened in accordance with the normal operation of the opening door braking device R, the main groove 55 of the arm 20 that rotates with the opening operation is opened. While the movable pin 15 moves along the arm 20, the arm 20 rotates against the urging force of the urging spring 35 of the apparatus main body B, and when the state shown in FIG. However, the arm 20 is held at an angular position adapted to the original predetermined inclination angle at a position where the engagement with the movable pin 15 is released. Therefore, in the opening door braking device R of the third embodiment, when the opening door 10 is closed thereafter, the normal state, that is, the state in which the arm 20 is held at the standby angle position adapted to the predetermined inclination angle. Can improve usability.

  By the way, in the illustrated embodiments described above, the engaging body A is attached to the opening door 10 and the apparatus main body B is assembled to the door frame 11. However, as shown in FIG. The apparatus main body B can be assembled to 10 and the engagement body A can be attached to the door frame 11. Therefore, in the opening door braking device R of the fourth embodiment shown below, the arm 20 assembled to the opening door 10 side and the engagement body A attached to the door frame 11 side are used, and the arm 20 and the engagement body A are reset. Auxiliary means S is formed.

  In the fourth embodiment, the engagement body A includes a mounting plate 79 (see FIG. 25) and a fixing pin 80 fixed perpendicularly to the mounting plate 79, and is substantially at the center of the upper frame portion 11 b of the door frame 11. A mounting plate 79 is fixed to the fixing pin 80 downward.

  On the other hand, as shown in FIG. 22 and FIG. 23, the opening door 10 is formed with a long and thin mounting recess 81 that houses the apparatus main body B substantially at the center of the upper end, and the storage case 78 is installed in the mounting recess 81. It has a structure around the door that incorporates the main body B and has a good appearance with little protrusion. The mounting recess 81 is provided with an entrance / exit 81a through which a part of the mounting concavity 81 that faces the engaging body A when the opening door 10 is opened / closed and the arm 20 rotates to enter / exit. The apparatus main body B is housed in an elongated rectangular storage case 78 by connecting the arm 20 to the brake unit C in series so as to be rotatable. The storage case 78 opens the upper side on one side in the length direction in accordance with the entrance / exit 81a of the mounting recess 81 so that the arm 20 can rotate to enter and exit.

  Therefore, as shown in FIGS. 23 and 25A, the arm 20 on the apparatus main body B side is located on the side portion along the guide groove 50 and on the inner side portion 45f facing the engagement body A when closed. A lower guide plate portion 83 having an escape recess 82 through which the fixing pin 80 passes is erected, and the movable wall 85 is parallel to the groove depth direction between the guide plate portion 83 and the main groove 55 of the guide groove 50. Incorporated in a movable manner. The movable wall 85 is composed of a piece-like piece having an inclined surface 85b whose upper end edge 85a is inclined so as to gradually approach the main groove 55 of the guide groove 50. Therefore, in the reset assisting means S of the fourth embodiment, the movable wall 85 of the arm 20 and the biasing spring 90 made of a coil spring are used, and the biasing spring is placed between the movable wall 85 and the bottom plate portion of the arm 20. The upper end edge 85a is held between the guide plate portion 83 and the main groove 55 so that the upper end edge 85a can be pushed down against the upward biasing force of the biasing spring 90.

  Therefore, the opening door braking device R according to the fourth embodiment is used when the arm 20 is not held at the standby angle position adapted to the predetermined inclination angle for some reason, that is, as shown in FIG. The reset assisting means S is activated and the arm 20 is adapted to a predetermined inclination angle so that the engaging body A engages with the guide groove 50 when it remains in the mounting recess 81 on the opening door 10 and is in a parallel state. It is possible to return to the standby angle position.

  At that time, the reset assisting means S closes the opening door 10 as shown in FIGS. 25 (A) and 26 (A) while the arm 20 is housed in the mounting recess 81 on the opening door 10 and remains parallel. Then, the movable wall 85 of the arm 20 approaches the distal end portion 80a of the fixed pin 80, and the distal end portion 80a of the fixed pin 80 is guided to the guide plate portion 83 as shown in FIGS. 25 (B) and 26 (B). It passes through the upper recess 82 and contacts the inclined surface 85 b of the movable wall 85. When the opening door 10 is rotated in the closing direction as it is, the movable wall 85 is pushed by the distal end portion 80a of the fixed pin 80 and attached to the urging spring 90, as shown in FIGS. When the tip end 80a of the fixing pin 80 passes over the upper edge 85a of the slope 85b as shown in FIGS. 25 (D) and 26 (D), the arm descends along the slope 85b against the force. The 20 main grooves 55 are engaged.

  When the fixing pin 80 is engaged with the main groove 55 of the guide groove 50 as described above, the arm 20 that rotates with the opening operation when the opening door 10 is opened in accordance with the normal operation of the opening door braking device R thereafter. The fixed pin 80 moves along the main groove 55, while the arm 20 rotates against the urging force of the urging spring 35, and when the state shown in FIG. However, the arm 20 is held at an angular position adapted to the original predetermined inclination angle at a position where the engagement with the fixing pin 80 of the engagement body A is released. Therefore, even in the opening door braking device R according to the fourth embodiment, when the opening door 10 is closed thereafter, the normal state, that is, the state in which the arm 20 is held at the standby angle position adapted to the predetermined inclination angle. In this way, usability can be improved.

A Engagement body B Device main body C Brake unit R / R ′ Opening door braking device P Entrance to main groove S Reset assisting means 10 Opening door 11 Door frame 15 Movable pins 20 and 20 ′ Arm 25 Axis 29 Main body case 30 Rotating cam 40 Damper 45 Arm body 46/70 Piece piece 47 Coil spring (elastic material)
49 Opening 50 Guide groove 55 Main groove 60/65 Side groove 75 Guide surface 80 Fixed pin 85 Movable wall 85b Slope

Claims (3)

When the opening door rotates in the closing direction and reaches an angle position of a predetermined inclination angle immediately before full closing, an engaging body that engages with the apparatus main body is attached to one of the door frame or the opening door, while the other engaging body is engaged. The apparatus main body is assembled at a corresponding position, the apparatus main body is connected to the base end portion of the main body case so as to be rotatable around the pivot axis, and guides the engaging body inserted from the front end portion to guide the opening door. An arm having a guide groove that enables movement associated with opening and closing is held, and before engaging, the arm is held at a standby angle position adapted to the predetermined inclination angle capable of engaging with the engaging body, After the engagement, the arm is urged to rotate in the closing direction to pull the opening door, and the opening door braking device that applies a braking force to the arm and decelerates the opening door that rotates in the closing direction. Is held at a standby angle position adapted to the predetermined inclination angle. When no is the open door braking device comprising a reset auxiliary means for returning the arm to the engaging body is engaged with the guide grooves the waiting angular position adapted to the predetermined inclination angle,
The arm includes an opening that guides the leading end of the engaging body that enters and exits when the opening door opens and closes, a main groove that extends from the opening along the arm length direction, and an inlet of the main groove. An opening door braking device, characterized in that it is formed with a side groove recessed in the groove wall of the door, and a piece piece is fitted into the side groove so as to be able to advance and retreat with an elastic material sandwiched in the back side.   The reset auxiliary means abuts the guide surface provided on the side portion of the arm along the guide groove so that the lower end edge thereof is gradually inclined toward the groove side wall of the main groove and the door when the door is closed. A movable pin of the engaging body that engages with the main groove when it descends along the guide surface and passes over the lower edge of the guide surface, and a biasing force that resists the downward movement of the movable pin is applied to the movable pin. The opening door braking device according to claim 1, comprising an urging spring of the engagement body. The reset assisting means includes a movable wall having a slope whose upper edge is gradually inclined toward the main groove on a side portion of the arm along the guide groove, and the slope that abuts when the opening door is closed. The movable body is lowered along the upper end edge of the movable wall along the movable wall, and the fixed pin of the engaging body that engages with the groove is applied to the movable wall, and the urging force against the lowering of the movable wall is applied to the movable wall. The opening door braking device according to claim 1, wherein the opening door braking device is configured by an urging spring.

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