JP5336719B2 - Shock absorber - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly set, without changing a damper, the time and timing at which a braking force acts on a folding door just before the folding door is closed. <P>SOLUTION: This damping device 60 comprises a first mounting member 61 attached to the connection end part of one door plate to the other door plate, a second mounting member 62 attached to the connection end part of the other door plate to the one door plate, a hinge part 63 rotatably connecting both mounting members 61, 62 to each other, and a braking mechanism 70. The both mounting members 61, 62 comprise mounting metal fixtures 80 so formed of a same material as to have a same shape and dimensions, and resin first base members 91, 92 with different structures which are fitted and integrally fixed to the mounting metal fixtures, respectively. The braking mechanism 70 is held on the second base member 92, and brakes the abrupt rotation of the folding door 10 by the repulsive force thereof when pressed by the first base member 91. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a cushioning device for folding doors installed in furniture such as sink cabinets and hanging cabinets, or furniture such as cupboards and bookcases, and more particularly, brakes rapid rotation between door plates when closing folding doors. The present invention relates to a shock absorber.

  The folding door is provided with at least two door plates, and the adjacent door plates are connected to each other via a hinge so as to be rotatable in the horizontal direction, and the upper end portion of the door plate is moved to a rail laid thereabove via a runner. By being supported freely, the door plates are structured to open and close while rotating.

  As described above, the folding door opens and closes while the door plates rotate, so that when the door is closed, the door plates abut against the left and right door frames and the crest surfaces of the door plates abut against each other. For this reason, when the door is suddenly rotated to the end when the folding door is closed, a large impact sound or vibration is generated. Repeated application of this impact to the folding door or door frame causes the parts to be damaged or deteriorated earlier. There is also a problem peculiar to folding doors, in which the doorboard once closed to the end bounces off due to an impact, and the doorboards are folded in a semi-closed state. In order to solve this type of problem, it is effective to brake the sudden rotation of the door plates when the folding door is closed.

  Conventionally, as a technique for braking sudden rotation when closing the door plate, the inner side surface portion of the door frame (door) to which the door plate (door) is attached via a hinge is brought into contact with the wooden face of the door plate (door). 2. Description of the Related Art An embedded damper that exerts a force that brakes the rotation of a door plate (door) is known. This type of damper includes, in a cylinder embedded in the door frame (側面), a piston that protrudes and protrudes from the inner side surface of the door frame (框) and a restoring spring that biases the piston to the side that always protrudes. Just before the door) is completely closed, the door end of the door plate (door) comes into contact with the piston, and the piston is pushed against the repulsive force of the restoring spring. ). (Patent Document 1)

  However, the sudden rotation of the door plate (door) when the door plate (door) is closed is braked by bringing the wood face of the door plate (door) into contact with the piston of the damper device embedded in the door frame (框). When the door plate (door) is extremely closed, that is, when the door plate (door) is not close to being completely closed, the braking force by the damper cannot be applied to the door plate (door). In order to advance the timing at which the braking force by the damper acts, it is necessary to increase the protruding length of the piston from the inner side surface of the door frame (框) and to increase the stroke. This means that a longer damper is required, and the mounting hole for embedding the damper accordingly needs to be larger.

Therefore, the present applicant has developed a shock absorber shown in FIG. The shock absorber 100 is attached to the back surface of the folding door to brake the sudden rotation of the door plates 11 and 12 when the folding door is closed, and is fitted into the mounting hole 11a of one door plate 11 and fixed with screws. The first mounting bracket 101, the second mounting bracket 102 fitted in the mounting hole 12a of the other door plate 12 and fixed by a screw, and both mounting brackets 101 and 102 are connected to each other so as to be rotatable. And a braking mechanism 104 provided on one of the mounting brackets 101 and 102 to brake the mutual rotation of the mounting brackets 101 and 102. The braking mechanism 104 includes a damper (see FIG. 7) that is compressed and repelled in the horizontal direction, and an abutting member 105 attached to the damper. The damper is compressed by being pressed against one of the mounting brackets 101 in accordance with the mutual rotation. According to the shock absorber 100, the time and timing of the braking force when the folding door is closed can be appropriately set without increasing the length of the damper to be used.
Japanese Utility Model Publication No. 53-16661 (Japanese Utility Model Publication No. 57-11112)

  Since the first mounting bracket 101 and the second mounting bracket 102 provided in the shock absorber shown in FIG. 13 have different structures, in order to manufacture the shock absorber 100, two types of mounting having different structures are used. It is necessary to prepare the metal fittings 101 and 102, which is disadvantageous in terms of the manufacturing cost of the shock absorber, the parts management efficiency, and the like, compared to the case where the fitting metal having the same structure can be produced.

  The problem to be solved by the present invention is to provide a shock absorber capable of appropriately setting the time and timing of braking force when closing a folding door, without increasing the length of the damper to be used and the number of types of parts to be used. It is to realize while reducing.

In order to solve the above-mentioned problems, the shock absorber according to the present invention is attached to the rear surface of the folding door so as to brake the sudden rotation of the door plates when the folding door is formed by connecting a pair of door plates so as to be horizontally rotatable. A first mounting member embedded in and attached to a connecting end portion of one door plate with the other door plate of the pair of door plates, and one door plate of the other door plate of the pair of door plates. A second mounting member embedded in and attached to the connecting end, a hinge portion rotatably connecting the two mounting members, and one mounting member to brake the mutual rotation of the two mounting members. A braking mechanism provided, wherein the braking mechanism includes a damper that is compressed in the horizontal direction and repels when in use, and a contact member that is mounted on the damper, and the first mounting member and the second mounting member The members are the same shape and the same Each of the common members made of the same material, and the common member is a member fastened to the door plate, and the first mounting member is integrally fitted and fixed to the common member. The second mounting member includes a second base member that is fitted and fixed to the common member, and the first and second base members are fitted to the common member. and formed notch as, when fitted with the common member, is formed on the common member, the edge of the fitting body of the U-shaped cross section open at the front, which is embedded in the connecting end portion of the door panel A locking portion that engages and prevents disengagement from the common member, and one base member has a damper holding portion that holds the damper while guiding the abutting member to be movable forward and backward. The abutting member moves forward and backward as the damper expands and contracts, and The tip is a member that abuts against the other base member, and the damper is compressed by the abutment member being pressed against the other base member as the mounting members rotate together when the folding door is closed. It is configured to be.

  In the shock absorber according to the present invention, the other base member protrudes from the common member of the one mounting member of the damper holding portion when the two mounting members are rotated and folded to the side where the folding door is opened. It is desirable that a recess for receiving the part is formed.

  ADVANTAGE OF THE INVENTION According to this invention, the buffering device which can set appropriately the time and timing which the braking force acts at the time of closing of a folding door, without lengthening the damper to be used can be provided. This shock absorber uses a common member made of the same material with the same shape, the same size, and the same material as the mounting brackets of both mounting members, compared with the case of using a mounting member that is different in shape, size, or material. Thus, the number of types of parts to be used can be reduced.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a rear view of a folding door apparatus according to the present invention. 2, 3 and 4 are overall perspective views of the shock absorber according to the present invention. 5A to 5E are a front view, a left side view, a right side view, a plan view, and a bottom view of the shock absorber according to the present invention, respectively. FIG. 6 is a rear view of the shock absorber according to the present invention, and FIG. 7 is a schematic cross-sectional view showing a cross section cut along the line AA in FIG. 8 is an exploded perspective view of the shock absorber of the present invention, and FIG. 9 is an exploded plan view of the shock absorber of the present invention. FIG. 10 is a perspective view showing the shock absorber according to the present invention and mounting holes formed in the door plate for mounting the shock absorber.

  The folding door device 1 includes a folding door 10 in which a pair of left and right door plates 11 and 12 are connected to each other in a horizontal direction by hinges 21, 22 and 23, a rail 30 laid above the folding door 10, and the folding door 10. Runners 41 and 42 that are movably supported along the rail 30 in a state of being suspended from the rail 30, a rectangular door frame 50 to which the rail 30 is attached, and a door plate 11 when the folding door 10 is closed, 12 is provided with a shock absorber 60 equipped to brake a sudden rotation of each other. The hinges 21, 22, and 23 are known hinges that are widely used as hinges for folding doors. The hinges 21, 22, and 23 have a so-called catch mechanism, and when the folding door 10 is closed, when the angle between the door plates 11 and 12 becomes approximately 125 degrees or more, the catch mechanism is activated and the folding door 10 is moved. Forced to fully closed state. In the example of FIG. 1, the shock absorber 60 is provided at an intermediate position between the hinge 21 provided at the highest position among the three hinges 21, 22, and 23 and the upper edge of the folding door 10.

  The shock absorber 60 includes a first attachment member 61 that is attached to a connecting end portion of one door plate 11 and the other door plate 12 of the pair of door plates 11 and 12, and a connecting end of the other door plate 12 to the one door plate 11. A second attachment member 62 attached to the attachment portion, a hinge portion 63 that rotatably couples the attachment members 61, 62, and the second attachment member 62 to brake the mutual rotation of the attachment members 61, 62. Braking mechanism 70 provided.

  The first mounting member 61 and the second mounting member 62 are each provided with mounting brackets (common members) 80 having the same shape, the same size, and the same metal material. The mounting bracket 80 is a processed metal plate that is fastened to the door plates 11 and 12 with screws (not shown). The mounting bracket 80 includes a bracket main body 81a having a U-shaped cross-section opened in front of the mounting holes 11a and 12a formed in the door plates 11 and 12, and an ear shape in the vertical direction from the open end edge of the member main body 81a. And a pair of upper and lower bearing portions 81e and 81f. A screw hole 81d is formed in each of the flange portions 81b and 81c.

  The first mounting member 61 includes a first base member 91 made of resin that is fitted and fixed integrally to the mounting bracket 80. The first base member 91 is a substantially circular member that is fitted into the mounting hole 11 a of the door plate 11. The first base member 91 is engaged with the notch 91a formed so as to be fitted to the mounting bracket 80 and the edge of the bracket body 81a when completely fitted to the mounting bracket 80. A locking claw portion 91b is formed to prevent detachment from the device.

  The second mounting member 62 includes a resin-made second base member 92 that is fitted and fixed integrally to the mounting bracket 80. The second base member 92 is a substantially circular member that is fitted into the mounting hole 12 a of the door plate 12. The second base member 92 has a notch 92a formed so as to be fitted to the mounting bracket 80, and engages with the end edge of the bracket body 81a when completely fitted to the mounting bracket 80. A locking claw portion 92b is formed to prevent separation from the hook.

  The first mounting member 61 is fixed to the door plate 11 by tightening a screw through each screw hole 81d of the mounting bracket 80 in a state where the first base member 91 is fitted in the mounting hole 11a of the door plate 11. The second mounting member 62 is fixed to the door plate 12 by tightening a screw through each screw hole 81d of the mounting bracket 80 with the second base member 92 fitted in the mounting hole 12a of the door plate 12.

  The hinge portion 63 includes a pair of upper and lower bearing portions 81e and 81f formed on the mounting bracket 80 on the first mounting member 61 side, and a pair of upper and lower bearing portions 81e formed on the mounting bracket 80 on the second mounting member 62 side. 81f and the bearing parts 81e and 81f on the upper side of both mounting brackets 80 and the bearing parts 81f and 81e on the lower side are hinge shafts 63a and 63b, respectively, in a state where the shaft holes are alternately overlapped with each other. By connecting, both attachment members 61 and 62 are connected to each other so as to be rotatable.

  In this example, the first base member 91 and the second base member 92 are also provided with a pair of upper and lower bearing portions 91c and 91d and 92c and 92d, respectively. And these bearing parts 91c, 91d and 92c, 92d are also connected with hinge shafts 63a, 63b together with the bearing parts 81e, 81f of the mounting bracket 80. In this example, the distance between the two bearing portions 91 c and 91 d of the first base member 91 is selected so as to overlap the outside of the bearing portions 81 e and 81 f of the mounting bracket 80. In addition, the distance between the two bearing portions 92c and 92d of the second base member 92 is selected so as to overlap the inside of the bearing portions 81e and 81f of the mounting bracket 80.

  The braking mechanism 70 includes a damper 71 that is compressed in the horizontal direction and repels, and a contact member 73 that is attached to the damper 71.

  The damper 71 includes a cylindrical damper main body 71a and a damper pin (output shaft) 71b that protrudes from the end of the damper main body 71a and moves back and forth in the horizontal direction (see FIG. 7). In the body 71a of the damper 71, a coil spring (elastic body) (not shown) that generates a repulsive force against the force acting in the direction in which the damper 71 is compressed, that is, the direction in which the damper pin 71b is pushed into the body 71a. And an oil damper (buffer body) (not shown) for buffering a sudden movement of the damper pin 71b.

  The second base member 92 is formed with an accommodating portion (damper holding portion) 72 that accommodates the braking mechanism 70. The accommodating part 72 has an accommodating space surrounded by a cylindrical side wall extending in the horizontal direction. The side wall of the housing portion 72 on the side overlapping the first mounting member 61 bulges out from the base of the second base member 92 in a dome shape. Both end portions 72 a and 72 b of the accommodating portion 72 are open, and the braking mechanism 70 is inserted into the accommodating space from the opening end portion 72 a on the end side facing the first attachment member 61.

  The other open end 72b of the accommodating portion 72 is closed by a damper holding position adjusting cap 72e. The portion of the accommodating portion 72 where the cap 72e is attached is thicker than the other portions, and a female screw portion 72d is formed on the inner wall of the portion. On the other hand, a male screw portion 72f is formed on the outer peripheral portion of the body portion of the cap 72e. By screwing the male screw portion 72f with the female screw portion 72d of the storage portion 72, the cap 72e is fitted to the opening end portion 72b of the storage portion 72. Is installed. A disc-shaped end plate portion 72g for closing the cap 72e is formed on the outer end of the cap 72e. The outer peripheral edge portion of the end plate portion 72g slightly protrudes outward from the body portion of the cap 72e, and a knob portion 72h is formed by providing unevenness for preventing slippage in that portion. The holding position in the horizontal direction of the brake mechanism 70 can be finely adjusted by adjusting the amount of screwing of the cap 72e with respect to the accommodating portion 72 by adjusting the knob 72h with a finger and rotating the cap 72e. That is, the damper holding position adjusting mechanism is configured by the female screw portion 72d formed on the inner wall of the housing portion 72 and the cap 72e screwed to the female screw portion 72d. By increasing the screwing amount of the cap 72e, the braking mechanism 70 is increased. The holding position of the braking mechanism 70 can be displaced further away from the first mounting member 61 if the screwing amount of the cap 72e is reduced. It can be made to.

  The first attachment member 61 is formed with a recess 91e that receives the housing portion 72 and the contact member 73 when the attachment members 61 and 62 are both turned to the side where the folding door 10 is opened and folded.

  The abutting member 73 is a cap-shaped member that is attached to the damper main body 71a so as to be covered from the side opposite to the damper pin 71b and whose tip is closed. The damper main body 71 a is completely accommodated in the contact member 73. The abutting member 73 is inserted into the accommodating portion 72 so as to be slidable in the horizontal direction, and moves together with the damper main body 71a while being accommodated. The base end of the contact member 73, that is, the end on the side where the damper pin 71b is provided, is slidably inserted into the cap 72e constituting the damper holding position adjusting mechanism. The damper pin 71b protrudes from the proximal end of the contact member 73, and the protruding end abuts the inner surface of the end plate portion 72g of the cap 72e.

  The shape and size of the tip 73a of the contact member 73 are selected so that the contact member 73 contacts the side edge 91f of the first base member 91 on the second mounting member 62 side at a predetermined timing when the folding door 10 is closed. Has been. Then, the contact member 73 is pressed by the first base member 91 with the mutual rotation of the mounting members 61 and 62 when the folding door 10 is closed, and moves to the cap 72e side together with the damper main body 71a. The damper 71 is compressed between the member 73 and the cap 72e. When the folding door 10 is completely closed, the damper 71 is in the most compressed state. At this time, the damper pin 71b is almost completely buried in the contact member 73.

  A pair of guide protrusions 73c and 73d are formed in the vicinity of the rear end of the contact member 73 so as to protrude vertically. On the other hand, the second base member 92 is formed with guide grooves (not shown) that receive the guide protrusions 73c and 73d and guide the guide protrusions 73c and 73d so as to be slidable in the horizontal direction. The guide protrusions 73c and 73d are guided in a guide groove (not shown), thereby preventing the contact member 73 from rotating and rattling with respect to the second base member 92.

  A small protrusion 73e is formed on the front surface of the contact member 73. On the other hand, an elongated hole 73 i extending in the horizontal direction (sliding direction of the contact member 73) is formed in the accommodating portion 72 so as to penetrate the wall of the accommodating portion 72. The small protrusion 73e of the contact member 73 is located in the long hole 73i of the accommodating portion 72, and is visible from the outside of the accommodating portion 72 through the long hole 73i. That is, the holding position of the braking mechanism 70 can be almost confirmed by the position of the protrusion 73e. Further, the protrusion 73e is in contact with the end of the long hole 73i, thereby preventing the contact member 73 from coming off.

  FIG. 11 is a partial perspective view showing a series of states when the folding door device 1 is opened and closed, and FIG. 12 is a partial plan view. 11 and 12, (a) is a state in which the folding door 10 is fully open, and when the folding door 10 is closed from this state, the state of (d), that is, the folding door 10 is in the state of (b) and (c). When the folding angle reaches approximately 125 degrees, the catch mechanisms of the hinges 21, 22, and 23 are operated, and the folding door 10 is forcibly guided to the state (e), that is, the fully closed state by its action. At that time, the braking force by the braking mechanism 70 starts to be effective at a predetermined timing after the operation of the catch mechanisms of the hinges 21, 22, and 23 until the folding door 10 is fully closed. As a result, the folding door 10 is gently guided to the fully closed state while the rapid rotation of the door plates 11 and 12 at the time of closing is braked.

  The shock absorber 60 configured as described above can appropriately set the time and timing of the braking force when the folding door 10 is closed without increasing the size of the damper 71 to be used. That is, the shock absorber 60 is equipped with a damper 71 that is compressed and repelled in the horizontal direction on the second mounting member 62 side, and the mounting members 61 and 62 when the contact member 73 mounted on the damper 71 closes the folding door 10. The damper 71 is compressed by being moved together with the damper main body 71a by being pressed by the side edge portion 91f of the first mounting member 61 along with the mutual rotation, and the repulsive force causes a sudden rotation when the folding door 10 is closed. Since it is configured to brake, the shape and dimensions of the contact member 73, the positional relationship between the contact member 73 and the side edge portion 91f of the first mounting member 61, the holding position of the damper 71 in the horizontal direction, and the like. By selecting as appropriate, the time and timing at which the braking force is applied can be appropriately set without making any changes to the damper 71.

  Moreover, since the holding position in the horizontal direction of the damper 71 can be finely adjusted by adjusting the screwing amount of the cap 72e into the accommodating portion 72, the time during which the braking force is applied and after the shock absorber 60 is attached to the folding door 10 and Timing can be fine-tuned.

  In addition, the shock absorber 60 uses mounting brackets 80 having the same shape, the same dimensions, and the same metal material as the mounting brackets of both mounting members, so that any one of the shapes, dimensions, and metal materials is different. Compared with the case of using a metal fitting, the number of types of metal parts to be used can be reduced.

  Moreover, if the shape and dimension of both attachment members 61 and 62 of this shock absorber 60 are made to correspond to the shape and dimension of both attachment members of hinges 21-23, the hole processing for attaching the hinges 21-23 to the folding door 10 will be carried out. Since the mounting holes 11a and 12a for the shock absorber 60 can be formed by exactly the same processing, the man-hours and costs required for manufacturing the folding door device 1 can be reduced. On the other hand, in the above-mentioned prior art, the shape and size of the mounting hole for mounting the damper are different from the shape and size of the mounting hole for mounting the hinge. Therefore, a hole different from the mounting hole for the hinge for mounting the damper is used. It was necessary to carry out processing separately, which hindered the reduction of man-hours and costs.

  Further, since the shock absorber 60 itself can function as a hinge, the number of hinges to be used can be reduced by using the shock absorber 60 instead of any of the hinges 21 to 23.

  In the above example, the first base member 91 and the second base member 92 are made of resin, but both or one of the base members 91 and 92 may be made of metal. Moreover, it is also possible to use a common member made of another material, for example, a hard resin or ceramic, instead of the mounting bracket 80.

The rear view of the folding door apparatus provided with the buffer device of the present invention 1 is an overall perspective view of the shock absorber in FIG. 1 (a state in which both mounting members are completely opened). 1 is an overall perspective view of the shock absorber in FIG. 1 (critical state where braking force begins to work). 1 is an overall perspective view of the shock absorber in FIG. 1 (a state in which both mounting members are rotated at right angles to each other). (A)-(e) is the front view, left view, right view, top view, bottom view of the shock absorber of the present invention, respectively. Rear view of the shock absorber of the present invention Schematic sectional view showing a section cut along line AA in FIG. Exploded perspective view of the shock absorber of the present invention Exploded plan view of the shock absorber of the present invention The perspective view which showed the shock absorber of this invention, and the attachment hole formed in the doorplate to attach this The fragmentary perspective view which shows a series of states at the time of opening and closing of the folding door apparatus shown in FIG. Partial top view which shows a series of states at the time of opening and closing of the folding door apparatus shown in FIG. The perspective view which showed the shock absorber which the present applicant proposed previously, and the attachment hole formed in the doorplate to attach this

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding device 10 Folding door 11 Door plate 11a Mounting hole 12 Door plate 12a Mounting hole 21, 22, 23 Hinge 30 Rail 41, 42 Runner 50 Door frame 60 Shock absorber 61 1st mounting member (other mounting member)
61i Concave part 61f Side edge part 62 2nd attachment member (one attachment member)
63 Hinge part 70 Braking mechanism 71 Damper 71a Damper body 71b Damper pin (output shaft)
72 Housing (Damper Holding Unit)
72d Female thread part 72e Cap 72f Male thread part 72h Knob part 73 Abutting member 80 Mounting bracket (common member)
81a Metal fitting body 81b, 81c Flange portion 81e, 81f Bearing portion 91 First base member 91e Concavity 92 Second base member

Claims (2)

A shock absorber attached to the back surface of the folding door to brake the sudden rotation of the door plates when the folding door is closed by connecting a pair of door plates so as to be horizontally rotatable,
A first mounting member that is embedded and attached to a connecting end portion of one door plate with the other door plate of the pair of door plates;
A second mounting member that is embedded and attached to a connecting end portion of one door plate of the other door plate among the pair of door plates;
A hinge portion that rotatably couples both mounting members to each other;
A braking mechanism provided on one mounting member to brake the mutual rotation of both mounting members,
The braking mechanism is
A damper that is compressed in the horizontal direction and repels when in use,
A contact member attached to the damper,
The first mounting member and the second mounting member are each provided with a common member made of the same material with the same shape and the same size, and the common member is a member fastened to the door plate,
The first mounting member includes a first base member that is fitted and fixed integrally with the common member,
The second mounting member includes a second base member that is fitted and fixed integrally with the common member,
The first and second base members are formed in the common member when the first base member and the second base member are fitted to the common member, and when connected to the common member , and are connected to the door plate. An engagement portion that engages with an end edge of a U-shaped metal fitting body that is opened before being embedded in the metal member to prevent detachment from the common member,
One base member includes a damper holding portion that holds the damper while guiding the abutting member to be movable back and forth.
The contact member is
The damper moves forward and backward as it expands and contracts, and its tip is a member that comes into contact with the other base member,
A shock absorber configured such that the damper is compressed when the contact member is pressed against the other base member as the mounting members rotate with each other when the folding door is closed. In the other base member,
2. A shock absorber according to claim 1, wherein a recess is formed for receiving a portion protruding from the common member of the one mounting member of the damper holding portion when the two mounting members are turned and folded to open the folding door. .