JP2011099314A - Rotation control mechanism of rotator, and device for opening/closing door and the like using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door which characteristically prevents a person from feeling the door heavy when opening the door, which is slowly rotated, which brings about a tightly sealed state, and which turns down an impact noise in closing by stopping once even when a strong and rapid force acts on the door. <P>SOLUTION: This device for opening/closing the door has a structure which decelerates without use of the viscosity resistance and friction resistance of oil, controls a closing speed by changing the direction of the force, and continues to rotate even when the door is stopped immediately when closed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention relates to a rotation control mechanism for a rotator and an opening / closing device such as a door using the rotator control mechanism.

The present invention and Patent Documents 1 to 6 include a “opening / closing body composed of two links” that rotates relatively while sharing the pivot axis O, and a “stretchable portion composed of one or more links”. The connecting shafts at both ends are connected to each of the two links, and each of the links is connected with a pair or a sliding pair to form a link device, and the “drive connection shaft Sw that is not the pivot O” of the link device. The drive rotational force Mv acting around is transmitted and the rotational force Mo acts around the pivot axis O, and the opening / closing device such as a door that opens and closes the opening / closing body. The operation in which the door frame W is fixed and the door D is rotated means that the door D is fixed and the door frame W is rotated if the view is changed, and the door D and the door frame W are switched. The same is true for the device. Further, the operation of closing the door D and the door frame W is “the door D extending from the pivot axis O to the opposite side of the door D and the door frame W are also opened. The rotation can be converted into rotation in the opening direction.

When the expansion / contraction part is composed of one link, one of the “connecting shafts at both ends of the expansion / contraction part” moves along a path provided in one of the two links, and the expansion / contraction part has two or more links. In the case of a link, it is a link device that opens and closes the opening / closing body by changing the distance between "the connecting shafts at both ends of the expansion / contraction part" or the link of any one of the above-mentioned "extension / contraction part consisting of one or more links" Instead of the spring, the opening / closing body opens and closes.
A spring is employed as the biasing means, and the spring opens and closes the closed door, and when the hand is released from the door, the door is closed by the restoring force of the spring. (Hereinafter, the opening degree of the door when the door starts to rotate in the closing direction by the biasing force stored in the spring is referred to as a closing start opening degree.)

One of the links of the expansion / contraction part has a releasable restraining means for restraining rotation about one of the “joint shafts at both ends”, and the other of the “joint shafts at both ends” does not move at all or hardly. By moving between the position where the restriction is released and the position where the restriction is released, the point of action of the force acting on the opening / closing body is transferred at a predetermined opening of the opening / closing body, and the rotational force Mo changes abruptly.

In Patent Document 5, the action point is provided with two places, that is, an action point P1 located near the drive connecting shaft Sw and an action point P2 located far away, or the action point C is located near the pivot axis O. The action point C1 at a distance and the action point C2 at a far position are provided, and the switchgear has the force Fj acting on the action point P2 or the force Fo acting on the action point C1. "Rotating means", "(i) rotating means" where the force Fj acts on the action point P1, or the force Fo acts on the action point C2, and the above-mentioned " A "switching means" for switching from the "(a) rotating means" to the "(ii) rotating means".
This switchgear is characterized in that the action point P of the force Fj is transferred from the action point P2 to the action point P1, or the action point C of the force Fo is transferred from the action point C1 to the action point C2. And “the distance Lj between the action line of the force Fj and the drive connecting shaft Sw” or “the distance Lo between the action line of the force Fo and the pivot axis O” changes discontinuously. Accordingly, the magnitude of the driving torque Mv or the torque Mo changes discontinuously.

In Patent Documents 1 to 6, “the distance Lj between the action line of the force Fj and the drive connecting shaft Sw” is increased, or “the distance Lo between the action line of the force Fo and the pivot axis O” is decreased. “(A) rotating means” that restrains and applies a small force to the door, and “(A) rotating means” that applies a large force to the door by reducing the former or increasing the latter. And the line of action of the force Fj or the line of action of the force Fo is greatly moved, transferred, or rotated with a predetermined opening of the opening / closing body as a boundary. A “switching unit” that rapidly changes the “distance Lj between the drive connecting shaft Sw” and the “distance Lo between the action line of the force Fo and the pivot O”.
The “(a) rotating means” that restrains the distance Lj or the distance Lo reduces the operation of the expansion / contraction part even though the door rotates largely, and the “switching means” that greatly changes the distance Lj or the distance Lo is a door. The movement of the expansion / contraction part is enlarged despite the small rotation.

In Patent Document 6, “a link 1 having a sliding surface” and “a link 2 in which a wheel is mounted on a wheel rotation shaft provided at a tip portion” are freely rotatable around each of a pair of rotation shafts separated from each other. The link 1 and the link 2 are rotated by the wheel moving along the sliding surface. In the intermediate portion of the sliding surface, the wheel and the link The distance between the contact line with the sliding surface and the action line of the force passing through the wheel rotation shaft and the one of the pair of rotation shafts is kept substantially constant small or large, at the end of the sliding surface. A switchgear characterized by the fact that when the curvature of the sliding surface changes, the line of action of the force rotates at a predetermined opening of the two links, and the rotational force Mo changes abruptly. Thus, the opening / closing device of Patent Document 6 has the force Fj or The action line of the force Fj or the force described above is bounded by the “(A) rotating means” that controls the direction of the action line of Fo to constrain the distance Lj or the distance Lo and the predetermined opening of the opening / closing body. By rotating the action line of Fo, the “distance Lj between the action line of the force Fj and the drive connecting shaft Sw” or the “distance Lo between the action line of the force Fo and the pivot axis O” is rapidly increased. “Switching means” for changing.

The opening / closing device of Patent Documents 1 to 6 is a “link device in which an expansion / contraction part and an opening / closing body are interlocked”, and when the movement of one of the expansion / contraction part and the opening / closing body stops, the other also stops.
On the other hand, the present invention is a “link device in which the expansion / contraction part and the opening / closing body do not interlock”, and even if the movement of one of the expansion / contraction part and the opening / closing body stops, the other does not stop and continues to move. It is a switchgear that can.
The “link device in which the expansion / contraction part and the opening / closing body do not interlock” is a structure in which one or more links are newly added to the “link apparatus in which the expansion / contraction part and the opening / closing body are interlocked”, or any one of the links is replaced with a spring. Alternatively, any one of the link devices having a structure in which one of the connecting shafts of the rotating pair is replaced with a connecting shaft of the sliding pair.

The triangle connecting the three links cannot be deformed, and one of the three links is a spring, or one of the three links moves along a path provided on the other two. Either of the above-described structures or the structure of a four-bar rotation mechanism in which one of the three links becomes two links makes a non-movable triangle movable. This link device is a link device that stops the movement of all the links when the movement of one of the three links is stopped, and is a “link apparatus in which the extendable part and the opening / closing body are linked”. A structure in which one or more links are newly added to the “link device in which the expansion / contraction part and the opening / closing body are interlocked”, or a structure in which any one of the links is replaced with a spring, or any connecting pair of the rotating pair is slid In any of the link devices having the structure replaced with the connecting shaft, the “rotation of the link around any connecting shaft of the link device” stops and the “two links around any connecting shaft” is relative. As a result, the number of links is reduced by one, but you can continue to exercise.

JP 2009-030417 A JP2009-091853A JP2009-144329A JP2009-249965A JP2009-270370 JP 2009-185461 A

The opening / closing device of the present invention includes a releasable means for restraining the “rotation of the link around any connecting shaft” of the link device, and the “rotation of the link around any of the connecting shafts” rotates. It is restrained in the middle and stops or substantially stops, and the opening / closing device continues to move without stopping.
The above-mentioned link device is a “link device in which the expansion / contraction part and the opening / closing body do not interlock”, and a structure in which one or more links are newly added to the “link apparatus in which the expansion / contraction part and the opening / closing body interlock” or any one of the links. It is either a structure replaced with a spring, or a link device having a structure in which any connecting pair of connecting shafts is replaced with a connecting shaft of a sliding pair.

The structure of the “link device in which the expansion / contraction part and the opening / closing body are interlocked” is a structure in which the expansion / contraction part is formed by one spring, or the expansion / contraction part is formed by one link, and one of the “joining shafts at both ends of the expansion / contraction part”. Is a structure that moves along a path provided in any one of the “opening / closing body comprising two links”, or a structure of a four-bar rotation mechanism in which the expansion / contraction part is constituted by two links, The magnitude of the rotational force Mo or the force F changes abruptly by restricting or releasing the "rotation of the link around any one of the connecting shafts" at the predetermined opening of “Switching means” is provided. The "switching means" is characterized in that it operates with little or no "rotation of the link around any one of the connecting shafts".

For example, the opening / closing apparatus of FIG. 1 is located in an area sandwiched between the “two links” and “the two links” that rotate relative to each other by sharing the pivot O, A first door rotatably supported around a “first support shaft provided at any one”, and the first door provided between “one of the two links” and the first door. A spring is provided between the first urging means for urging the door, and the first door and “the other of the two links”. The first biasing means is the telescopic part.
The rotating body Jc in each drawing, not limited to the rotating body Jc in FIG. 1, corresponds to the first door. The “support shaft Sw” or “the connecting shaft C which is the other mounting shaft of the telescopic portion and the opening / closing body and is movably supported by the door D” is movably mounted via the rotating body Jc.

When the rigidity of the push spring U is infinite, it is the same as when the fixed support shaft Sw is directly fixed to the door frame W by removing the rotating body Jc from the link device of each drawing. The "switching means" operates with little or no "rotation of the link around any connecting shaft of the link device". The force to shrink the “pushing spring U that urges the rotating body Jc” even if the “force to rotate the door” is insufficient to dent the latch just before the door is fully closed (hereinafter, just before closing) If there is, the rotator Jc is rotated even if the door is stopped, and the lick device continues to move. When the rotating body Jc rotates and the pressing spring U further contracts, the force stored in the pressing spring U grows to “force that can rotate the door”, and the door starts to close again.
Also, for example, FIG. 6 shows an elastic part that has one link as an elastic body. When the link is a rigid body, the “link device in which the elastic part and the opening / closing body work together” is a door that stops its movement immediately before closing. When it is deformed, it becomes a “link device in which the extendable part and the opening / closing body do not interlock”, and the movement is resumed.

The present invention is an opening / closing device provided with a sealing prevention means for preventing the door from rotating at high speed and colliding with the door stop, and “opening / closing body composed of two links” that rotates relatively while sharing the pivot O, A link device in which the “link shafts at both ends of the stretchable part” are connected to each of the two links, and each of the links is connected with a pair or a slipping pair. The driving rotational force Mv acting around the “drive connecting shaft Sw that is not the pivot axis O” of the link device is transmitted, and the rotational force Mo acts around the pivot axis O, so that the opening / closing body opens and closes. In the opening / closing device, when the expansion / contraction part is composed of one link, one of the “connecting shafts at both ends of the expansion / contraction part” moves along a path provided in one of the two links, and the expansion / contraction part When consists of two or more links Is a link device that opens and closes the opening / closing body by changing the distance between the connecting shafts at both ends of the expansion / contraction section, or replaces any link of the expansion / contraction section consisting of one or more links with a spring. The opening / closing device that opens and closes the opening / closing body, wherein any one of the links of the expansion / contraction section includes releasable restraining means for restraining rotation about one of the “joining shafts at both ends”. ”Is moved between a position where the other is restrained so that it does not move at all or almost and a position where the restraint is released, so that the opening / closing body operates at a predetermined opening degree. An opening and closing device characterized in that the point of action of the force moves and the rotational force Mo changes rapidly.

A "opening / closing body consisting of two links" and a "rotating part consisting of one or more links" that rotate relative to each other while sharing the pivot O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected with a pair or a sliding pair to form a link device, and is rotatably supported around a “drive connection shaft Sw that is not pivotal O” of the link device. The force Fj is applied to the action point P provided on the rotating body J, and the "driving rotational force Mv acting around the drive connecting shaft Sw" is transmitted to open / close one of the above-mentioned "opening / closing bodies comprising two links". A force Fo is applied to an action point C provided on the body D, and the opening / closing body is opened and closed by the rotational force Mo acting around the pivot O. The action point P is close to the drive connecting shaft Sw. Action point P1 at a position and action point P at a distant position Or two points of action point C1 near the pivot axis O and point of action C2 far from the pivot axis O, and the force Fj is applied to the action point P2. "(A) rotating means" that works or the force Fo acts on the action point C1, and the force Fj acts on the action point P1, or the force Fo acts on the action point C2. Rotating means ”and“ switching means ”for switching from the“ (A) rotating means ”to the“ (I) rotating means ”at a predetermined opening of the link, and the action of the force Fj The point P is transferred from the action point P2 to the action point P1, or the action point C of the force Fo is transferred from the action point C1 to the action point C2. And the distance Lj between the drive connecting shaft Sw ”or“ A rotation control mechanism is provided in which the driving torque Mv or the magnitude of the torque Mo changes discontinuously when the distance Lo between the line of action of the writing force Fo and the pivot O changes discontinuously. Switchgear.

A "opening / closing body consisting of two links" and a "rotating part consisting of one or more links" that rotate relative to each other while sharing the pivot O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected with a pair or a slip pair to form a link device, and a driving rotational force Mv acting around the “drive connection shaft Sw that is not pivot O” of the link device is transmitted. Thus, a rotational force Mo is applied around the pivot axis O, and the opening / closing device that opens and closes the opening / closing body, and the releasable that restricts the “rotation of the link around any connecting shaft” of the link device is releasable. Characterized in that the "rotation of the link around any one of the connecting shafts" is restrained or stopped substantially during the rotation, and the opening and closing device continues to move without stopping,
The above-mentioned link device is a “link device in which the expansion / contraction part and the opening / closing body do not interlock”, and a structure in which one or more links are newly added to the “link apparatus in which the expansion / contraction part and the opening / closing body interlock” or any one of the links. Any one of a link device having a structure replaced with a spring or a structure in which one of the connecting shafts of the rotating pair is replaced with a connecting shaft of the sliding pair, and the structure of the above-mentioned “link device in which the extendable part and the opening / closing body are interlocked” Is one of the above-mentioned “opening / closing body consisting of two links” in which the expansion / contraction part is composed of one spring, or the expansion / contraction part is composed of one link and one of the “connecting shafts at both ends of the expansion / contraction part”. It is either a structure that moves along a path provided, or a structure of a four-bar rotation mechanism in which the expansion / contraction part is composed of two links. "Rotating links around the axis" By releasing the bundle or constraint, a rotation control mechanism comprising a "switching means" the rotational force Mo or the magnitude of the force F is rapidly changed,
The opening / closing apparatus provided with a rotation control mechanism, wherein the “switching unit” operates with little or almost no “rotation of the link around any one of the connecting shafts”.

A "opening / closing body consisting of two links" and a "rotating part consisting of two or more links" that rotate relative to each other while sharing the pivot axis O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected with a pair or a slip pair to form a link device, and a driving rotational force Mv acting around the “drive connection shaft Sw that is not pivot O” of the link device is transmitted. As a result, a rotational force Mo is applied around the pivot axis O, and the opening / closing body opens / closes. In the opening / closing device, the two adjacent links in the two adjacent links of the two or more links. ”Or“ one of the connecting shafts at both ends of the two adjacent links ”is the drive connecting shaft Sw, and the shaft cores of the two adjacent links are bent straight from the bent state. Close to the state placed on the line An opening and closing device characterized in that the rotational force Mo changes suddenly.

A "opening / closing body consisting of two links" and a "rotating part consisting of two or more links" that rotate relative to each other while sharing the pivot axis O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected with a pair or a slip pair to form a link device, and a driving rotational force Mv acting around the “drive connection shaft Sw that is not pivot O” of the link device is transmitted. As a result, a rotational force Mo is applied around the pivot axis O, and the opening / closing body opens / closes. In the opening / closing device, the two adjacent links in the two adjacent links of the two or more links. "The connecting shaft for connecting the two" or "one of the connecting shafts at both ends of the two adjacent links" is the drive connecting shaft Sw, and the "two adjacent links" are disengaged from each other. The engaging part is provided, An opening / closing device in which the rotational force Mo changes abruptly when the engaging portion is engaged with each other and the two adjacent links are relatively integrated.

A "opening / closing body consisting of two links" and a "rotating part consisting of one or more links" that rotate relative to each other while sharing the pivot O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected with a pair or a slip pair to form a link device, and a driving rotational force Mv acting around the “drive connection shaft Sw that is not pivot O” of the link device is transmitted. As a result, a rotational force Mo is applied around the pivot axis O, and the opening / closing body opens and closes. A link 1 having a sliding surface is provided around each of a pair of rotating shafts separated from each other. The "link 2 with the wheel mounted on the wheel rotation shaft provided at the tip" is pivotally supported, and the link 1 and the link 2 rotate as the wheel moves along the sliding surface. A rotating mechanism for the above sliding In the middle of the surface, the distance between "the line of action of the force passing through the contact point between the wheel and the sliding surface and the wheel rotation shaft" and either of the pair of rotation shafts is kept substantially constant small or large. As the curvature of the sliding surface changes at the end of the sliding surface, the line of action of the force rotates at a predetermined opening of the two links, and the rotational force Mo changes rapidly. A switchgear characterized by that.

One of the links of the expansion / contraction part has a releasable restraining means for restraining rotation about one of the “joint shafts at both ends”, and the other of the “joint shafts at both ends” does not move at all or hardly. In the opening / closing device that moves between the position where the restriction is released and the position where the restriction is released, when any link of the expansion / contraction part and the adjacent link are connected in pairs, The wheel B is provided at the front end of any one of the links when the line of action of the force passing through the other of the links crosses the axial center line of any one of the links. When connecting with a sliding pair so as to move along the sliding surface K provided on the sliding surface K, the above-mentioned sliding surface passing through the contact point between the sliding surface K and the wheel B When the tangent line of K is close to or orthogonal A manner, or in a locking portion provided on the sliding surface K, the wheel B is in the boundary when disengaged from the locking portion, switchgear which the restraining means is released.

One of the links at both ends of the expansion / contraction part is rotated by a spring about one of the connecting shafts at both ends, and the spring is expanded and contracted by the force acting on the other of the connecting shafts at both ends. The other of the connecting shafts at both ends is an opening / closing device that moves between a position where the spring U expands and contracts and a position where the spring U recovers and stops.

“The link A is connected to one of the two links via the link J or not, the wheel B is attached to the tip of the link A, and the wheel B is provided on the other of the two links. The sliding surface K of the cam body that is pivotally supported around the moving surface K so as to move while being pressed or “around the connecting shaft C provided on the other of the two links” is 2 “A tangent line of the sliding surface K passing through the contact point between the sliding surface K and the link A” and the link A so as to move while being pressed along the sliding portion KAA provided on one of the two links. The opening / closing body is rotated so that the force acting in the axial line direction of the link A is increased so that the angle sandwiched between and the axial line of the link A approaches a right angle. The switchgear described in 1.

“The link A is connected to one of the two links via the link J or not, the wheel B is attached to the tip of the link A, and the wheel B is provided on the other of the two links. The sliding surface KA of the cam body that is supported while being rotated along the moving surface K or rotatably supported around the “connection shaft C provided on one of the two links” is Means for rotating the opening / closing body in the opening direction so as to move while being pressed along the sliding portion KAA provided on the other of the two links, and “to one of the two links via the link JJ or via The wheel BB is attached to the tip of the link AA to be connected, and the wheel BB moves while pressing along the sliding surface KK provided on the other of the two links. On one of the links The sliding surface KK of the cam body rotatably supported around the connecting shaft C ”is moved while being pressed along the sliding portion KAA provided on the other of the two links. An opening / closing device comprising means for rotating the opening / closing body in the closing direction.

In a region sandwiched between the “two links” and the “opening / closing body consisting of two links” that share the pivot O and relatively rotate, the “first link provided on either of the two links” A first door pivotally supported around a “support shaft”, and a first door provided between “one of the two links” and the first door and biasing the first door. An opening / closing device comprising a biasing means, a spring between the first door and “the other of the two links”, wherein the first biasing means is the telescopic part.

A rotary spring that urges the opening / closing body in a rotation range of the opening / closing body from a fully open position to a predetermined opening degree, and an urging force of the opening / closing body in a rotation range of the opening / closing body from the predetermined opening position to a fully closed position. The rotary spring and the sealing spring are provided, and the rotary spring and the sealing spring are replaced with each other at a predetermined opening degree of the opening / closing body to bias the opening / closing body. In the opening / closing device, a time during which the opening / closing body is not energized is provided while the rotation spring and the sealing spring are switched, and the amount of rotation of the rotation body is measured within the time to stop the opening / closing body. Opening and closing device provided with a mechanism for determining whether or not.

The opening and closing body of the opening and closing body when the magnitude of the force acting on the opening and closing body is switched in the process of closing and rotating from the fully opened position to the fully closed position of the "opening and closing body consisting of two links" that rotates relatively sharing the pivot axis. The opening degree of the opening / closing body when the magnitude of the force acting on the opening / closing body is switched in the process of opening and rotating from the fully closed position to the fully opened position is different. The switchgear described in any one of the above.

A "opening / closing body consisting of two links" and a "rotating part consisting of one or more links" that rotate relative to each other while sharing the pivot O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links A switching device that is connected to each of the links and is connected to each of the links by a pair or a sliding pair to constitute a link device, and a buffer that suppresses or delays "rotation around any connection axis" of the expansion / contraction part The switchgear according to any one of claims 1 to 10, wherein the switchgear is provided with a rotating means having a function or provided with an "actuator that rotates at a constant speed". “Rotation around the connecting shaft” is small “(A) range”, “Rotation around any of the connecting shafts” is small, and “(A) range” is small. ) Range ”to the above“ (ii) range ”. An “opening / closing device” that switches from “switching range” to the above “(range)”, or an “opening / closing device that decelerates rotation of the opening / closing body” A shock absorber that suppresses rotation of the opening and closing body.

A rotating body that rotates about a rotating shaft provided in the fixed portion W, a spring U1 that expands and contracts to a predetermined opening degree of the rotating body and hardly expands and contracts after the predetermined opening degree, and to the predetermined opening degree A spring U2 that hardly expands and contracts after the predetermined opening, and the rotating body up to the predetermined opening of the rotating body by the spring U1 and after the predetermined opening by the spring U2. And a biasing mechanism in which the spring U1 and the spring U2 are switched at the predetermined opening degree.

A rotation mechanism of a lid D that rotates about a horizontal pivot O provided on a fixed portion W, and a link A is connected to an attachment shaft C provided on one side of the fixed portion W and the lid D, and is provided on the other side. In the “link device for connecting by turning pair” in which the link J is connected to the mounting shaft Sw and the link A and the link J are connected by the connecting shaft P, the shaft of the link A is when the lid D is substantially horizontal. The core wire and the shaft core wire of the link J substantially overlap each other, and the shaft core wire of the link A and the shaft core wire of the lid D are substantially perpendicular to each other, or slide on the other of the fixed portion W and the lid D. A surface K is provided, and a wheel B is mounted on the “connecting shaft P at the tip of the link A connected to the mounting shaft C”, and the wheel B moves along the sliding surface K. In the “link device that is coupled evenly”, when the lid D is substantially horizontal, The “contact point b between the wheel B and the sliding surface K” and the straight line passing through the connecting shaft P substantially overlap each other, and the axial line of the link A and the axial line of the lid D are substantially orthogonal to each other. The lid rotating mechanism is characterized in that the weight of the lid D is supported by a substantially vertical rigid body.

"Opening / closing body consisting of two links" that rotate relative to each other while sharing the pivot axis O, and "cam body whose outer edge is a vortex shape" around "the mounting shaft C provided on one of the two links" And a moving surface that moves along the outer edge of the cam body is provided on the other of the two links, and “the contact b between the outer edge of the cam body and the moving surface” is the cam A rotating mechanism that moves along the moving surface with the outer edge of the cam body along with the rotation of the body, and the shape of the outer edge is “the distance between the normal line standing on the outer edge and the connecting shaft C”. When the other side is fixed and the moving surface is a horizontal plane, the normal line standing on the contact point b is always substantially vertical, and the one side is fixed and When the other is substantially horizontal, the normal line standing at the contact b is substantially vertical, and the normal line is A rotation mechanism characterized by supporting the gravity with a rigid body when the line of gravity is applied.

"Opening / closing body consisting of two links" sharing the pivot axis O and relatively rotating, the link A rotatably supported around the "mounting shaft C provided on one of the two links", A spring that urges the opening / closing body in the opening direction around the mounting shaft C, and a "sliding surface K provided on the other of the two links and continuing from a position far from the pivot O"; The link A is a rotation mechanism of a link device in which the opening / closing body opens and closes when the tip of the link A moves along the sliding surface K, and the axis of the link A and “the tip and the sliding surface K” The angle Θ with respect to the “normal line of the sliding surface K standing on the contact point b” increases when the opening / closing body rotates in the closing direction and the tip approaches the pivot axis O, and the opening / closing body Rotate in the opening direction and decrease when the tip moves away from the pivot O, The resistance received by the tip when the tip moves along the sliding surface K is a rotation mechanism of the link device that increases when the angle Θ decreases and increases when the angle Θ increases. A rotating mechanism of a link device, characterized in that when the opening / closing body is largely opened and closed, the movement of the distal end portion is small when it is in the vicinity of the pivot axis O.

Around each of the pair of rotating shafts spaced apart from each other, a “link 1 having a sliding surface” and a “link 2 having a wheel mounted on a wheel rotating shaft provided at the tip portion” are rotatably supported. A rotating mechanism in which the link 1 and the link 2 are rotated by the movement of the wheel along the sliding surface, and the “contact point between the wheel and the sliding surface” is provided at an intermediate portion of the sliding surface. A distance between the line of action of the force passing through the wheel rotation shaft and the one of the pair of rotation shafts is substantially constant.

A door D that is pivotally supported around “the pivot O provided at the fixed portion W”, a link A that is pivotally supported around “the connection axis C provided at the door D”, and one side The fixed portion W is fixedly supported by the fixed portion W, and the other fixed portion is movably supported by the link A, and the fixed portion W is provided in contact with and separated from the link A, so that “the connection shaft of the link A And a contact G that prevents "one-way rotation around C", and when the contact G abuts on the link A, the other mounting portion is in the middle between the pivot O and the connection shaft C, and A link device characterized in that when the link A is separated from the hit G and rotates about the connecting shaft C, the door D does not rotate.

A "opening / closing body consisting of two links" and a "rotating part consisting of one or more links" that rotate relative to each other while sharing the pivot O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected to each other by a pair or a slip pair to constitute a link device, and means for decelerating the movement of the link that rotates around any one of the connecting shafts of the expansion and contraction parts. The opening / closing device according to any one of claims 1 to 10, wherein the opening / closing device according to any one of claims 1 to 10 has no means for urging the "opening / closing body composed of two links". “(A) range” in which the rotation around the connecting shaft is small, “(A) range” in which the rotation of the opening / closing body is small and the rotation around any of the connecting shafts is large, and “(A) range” above "Switching range" to switch from " And a shock absorber that suppresses the rotation of the opening / closing body in the “range of (i)” from the “switching range”.

A "opening / closing body consisting of two links" and a "rotating part consisting of one or more links" that rotate relative to each other while sharing the pivot O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected with a pair or a slip pair to form a link device, and a driving rotational force Mv acting around the “drive connection shaft Sw that is not pivot O” of the link device is transmitted. As a result, the rotational force Mo works around the pivot axis O, and the opening / closing body opens and closes the opening / closing device, where the rotational force Mo is small (range) and the rotational force Mo is large. And a “switching range” for switching from the “(A) range” to the “(I) range”. In the “(A) range”, the rotational force Mo is about the pivot axis O. Is slightly larger than the maximum static frictional force acting on the Initially, the magnitude of the driving rotational force Mv is smaller than the minimum force required to open and close the opening / closing body and is slightly larger than the minimum force required to continue moving the expansion / contraction part. Opening and closing device.

Just before the door is fully closed, the "switching means" works, and a larger force is applied than before. Even if the amount of rotation of the door is small in the rotation range where the door is fully closed immediately before the door is fully closed, It will accelerate and the impact sound when fully closed will not be negligible. The spring has a property of expanding and contracting in an instant, and it cannot be strongly pressed against the door while it takes a long time for the rotation to be fully closed immediately before the door is fully closed.
However, when the door is fully closed, the amount of rotation of the door is reduced as much as possible in the rotation range where the door is fully closed from immediately before it is fully closed, and the "force acting on the door" is set to the minimum necessary without being over and under. It is possible to suppress the impact sound of the sound within the range that can be extinguished.

At least before the door is fully closed, the door is temporarily stopped or decelerated to a state close to it and the inertia force of the door is removed, so that the sealing operation cannot be made constant regardless of the opening degree of the closing. Also, before the inertia force is removed, the door must be prevented from being fully closed.
In the present invention, how to decelerate until the door is temporarily stopped or close to the state before fully closed, whether the door is not stopped halfway even if the deceleration means is applied, and is always fully closed, This is a problem to be solved by the invention.

As shown in FIG. 1, the door is such that a force for rotating the door in the closing direction and a force for rotating the door in the opening direction act simultaneously, and presses the sliding surface K to fully close the force Fb. It is characterized by temporarily stopping or approximating it immediately before,
A door provided with a wheel B that presses the sliding surface K and rotates the door in the closing direction, and a wheel BB that presses the sliding surface KK and rotates the door in the opening direction.
A door in which the sliding surface K or the sliding surface KK is substantially parallel to the “closed door surface D0”.

As illustrated in FIG.
“It is a link device composed of four links and having a four-bar rotation mechanism. When the link device is engaged with or disengaged from any link, the link device stops or moves by a sliding surface that moves along any link. A link device that receives a large resistance to continue, a link device that can be moved by elastic deformation of any of the four links. "Or" any of the four connecting shafts "as in the rotating body Jc in each figure. A link device that can be moved and moved by sliding evenly. "
Or, "Any of the four connecting shafts is restricted by a groove and its path is restricted, and the link device receives great resistance to stop or continue to move, and any of the four links can move by elastic deformation. Or “a link device in which any one of the four connecting shafts is movably mounted in a sliding pair and can be moved.”

As illustrated in FIG.
It is a link device of four-joint rotation mechanism composed of four links, and any adjacent two links are arranged in a straight line by extending or overlapping, forming a triangle and making it impossible to move Link device that turns so that it can move by elastically deforming any of the four links, or “any one of the four connecting shafts can move in a sliding pair, like the rotating body Jc in each figure. The link device is a link device that can be attached and moved so that any one of the four links is switched from an elastic body to a rigid body. Alternatively, a link device that swings between a position where any of the four connecting shafts is not restrained.

As illustrated in FIG. 8, around each of a pair of rotating shafts that are separated from each other, there are a “link 1 with a sliding surface” and a “link 2 with a wheel mounted on a wheel rotating shaft provided at the tip portion”. A rotating mechanism that is rotatably supported and rotates the link 1 and the link 2 as the wheel moves along the sliding surface. The distance between the contact line between the contact surface and the sliding surface and the wheel rotation shaft and the one of the pair of rotation shafts is substantially constant. Because
Opening and closing device that suppresses the rotation of “Link 1 with sliding surface” by the rotation of “Link 2 with wheels attached to the tip”

As illustrated in FIG. 9, around each of the pair of rotating shafts that are separated from each other, there are “a link 1 having a sliding surface” and “a link 2 in which a wheel is mounted on a wheel rotating shaft provided at the tip”. A rotating mechanism that is rotatably supported and rotates the link 1 and the link 2 as the wheel moves along the sliding surface. The distance between the contact line between the contact surface and the sliding surface and the wheel rotation shaft and the one of the pair of rotation shafts is substantially constant. Because
An opening / closing device including a link 3 that rotates in a different speed ratio in conjunction with the rotation of the “link 1 having a sliding surface”.

Although the present invention provides a technique for solving the “problem to ensure that the door rotates slowly and is securely and quietly sealed”, the technique provided by the present invention is naturally used in industrial fields other than the door. Needless to say, the present invention provides an effective means for the problem that the prior art has attempted to solve.
For example, “(A) Rotating Means” with a large door rotation and a small driving means operation, and “(A) Rotating Means” and “(A) Rotating Means” with a small door rotation and a large driving means operation. The switchgear equipped with “switching means” that switches to “(i) rotating means” becomes a speed reducer that works effectively only in the event of a collision, and adopts an actuator with a constant speed as the biasing means for the door. Provides a slowly rotating door.
A link that rotates with a small force in the circumferential direction of the circular motion and supports a large force in the radial direction of the circular motion is a support device that supports a large weight or a moving device that moves a large weight, a point repulsion that absorbs a large impact. It can be used for a shock absorber having a function.

Operation explanatory diagram of the mechanism that the full sealing prevention means releases just before full closing Operation explanatory diagram of the mechanism that stops once before full closing and the closing prevention means is released Operation explanatory diagram of the closing device where the sealing prevention means works from the beginning of closing Operation explanatory diagram of a sealing device having a sealing sliding surface and a sealing blocking sliding surface Operation explanatory diagram of the closing device that becomes inoperable immediately before full closing Operation explanatory diagram of a closing device in which one of the links is bent and deformed Operation explanatory diagram of closing device with force in opening direction Operation explanatory diagram of door shock absorber Operation explanatory diagram of the urging mechanism of the cover that undulates

Each of the following operation explanatory diagrams illustrates the operation of the link device by showing the state of the link device at each point in the process from the fully open state to the fully closed state of the door in one drawing. The opening degree of the door is shown, and each link at each time point, each connection point, and the arrangement of each urging means are shown. For example, D100 is a state where the door is fully opened and is stationary, D90 is a state where the door is fully opened, D10 is a state where the door is just before closing, D0 is a state where the door is fully closed, and C100 is a state where the door is fully opened and is stationary. The position of the connecting axis C, C90 is the position of the connecting axis C when the door is fully opened, D10 is the position of the connecting axis C when the door is in a state of close to closing, and D0 is the connecting axis when the door is fully closed. The position of C is shown.

Restraint release such as "switching means" greatly changes the "force acting on the door" and causes the door to be further accelerated just before closing.
The inertial force attached to the door just before closing (hereinafter referred to as the door inertial force) varies greatly depending on the weight of the door or the closing start opening, and the door rotates by the force of the telescopic part at the beginning of closing, but as it approaches closing As long as the force for decelerating the door does not work, the inertial force of the door accelerates the movement of the expansion / contraction part to further accelerate the door.
Despite the fact that the force that decelerates the door just before closing and the “force that the telescopic part acts on the door” is reduced, the door may be sealed by the inertia of the door, and the inertia of the door before sealing If the force is not lost, the sealing operation cannot be made constant. The sealing prevention means must prevent the door from being fully closed before the door is decelerated and the inertial force of the door disappears.

In the embodiment shown in FIG. 1, the door is decelerated or stopped by applying a sealing prevention means that stops the door from rotating immediately before closing and stops the rotation of the door so that the door is not sealed. Is rotated and the "force acting on the door" is suddenly increased, and then the sealing prevention means is released, so that the door starts to rotate slowly and becomes sealed. Although the acceleration of the door is negligibly small and the impact sound is small, a large force is required to restart the once stopped door and seal the door while denting the latch.

The link A is rotatably supported around the connection axis C, the wheel B is mounted on the rotation axis Ib of the wheel provided at the tip, and the wheel B is attached by the torsion spring UV attached around the connection axis C. “The force Fb by which the wheel B presses the sliding surface K (hereinafter, the cam body having the sliding surface K is also referred to as the sliding surface) while moving along the sliding surface K and moving away from the pivot O is applied to the door. Rotate in the closing direction. As shown in FIG. 1A, when the wheel B fits into the recess of the starting end KKK of the sliding surface K, the door stops. When leaving the locking portion KKK, the closing rotation is started by the biasing of the spring. When the line of action of force Fb crosses O, the urging direction of the door is reversed from the direction of opening the door to the direction of closing. Further, in the vicinity where the line of action of the force Fb crosses the connection axis Cj, the pressing spring U starts to contract and the rotating body Jc rotates.

The link AA is rotatably supported around the connection axis CC, and a wheel BB is mounted on the rotation axis Ibb of the wheel provided at the tip, and the wheel BB moves along the sliding surface KK. Resists closing of doors while moving away.
“The force Fbb that the wheel BB presses the sliding surface KK” works in the opposite direction to the force that closes the door, the movement of the wheel BB is suppressed by the pulling spring VV, the door is decelerated, and the movement of the wheel BB stops. Also stop. If the door closing speed closes to zero or close to zero even immediately before closing, and the door starts to close again after being stopped, the operation of the door in the rotation range from immediately before closing to full closing is as follows: It is substantially constant regardless of the closing start opening, and the magnitude of the impact sound is also substantially constant and small when the door comes into contact with the door stop.

As shown in FIG. 1 (a), the wheel B and the wheel BB, which are stopped in the vicinity of the pivot axis O, are hung from fully closed to fully closed as shown in FIG. 1 (b) and suddenly moved away from the pivot axis O. Both “the force Fb that the wheel B presses the sliding surface K” and “the force Fbb that the wheel BB presses the sliding surface KK” are both “switching range” (hereinafter, the range in which the “switching means” operates is the “switching range”. It works greatly on the door. As the wheel B and the wheel BB move away from the pivot axis O, both the force Fb and the force Fbb work in the direction perpendicular to the door surface, and the rotational force Mo acting around the pivot axis O increases. Each of the link A and the link AA supports a large sealing force and a sealing blocking force in the radial direction of rotation around the connection axis C and the connection axis CC, and rotates with a small force in the circumferential direction. When the rotation of the link A stops and the door stops just before closing, the rotating body Jc rotates in the direction of the arrow 3 in the figure, so that the expansion / contraction portion continues to move without stopping, and the push spring U contracts and “door” "Force acting on" gradually increases. The “force acting on the door” gradually increases, and at the same time, the force for moving the wheel BB to release the sealing prevention means also increases.

As shown in FIG. 1C, when the wheel Bb attached to the link A pushes the side surface of the link AA, the wheel BB is detached from the sliding surface KK. Since the sealing prevention means is suddenly released and the door rotates without receiving resistance, the smaller the door rotation angle from the release of the sealing prevention means to the full closure, the smaller the acceleration of the door. The impact sound when closing is also reduced. If the door closing speed is not zero just before closing, and not only the spring biasing force but also the door inertia force acts when fully closed, the spring biasing force required when fully closed can be reduced even if the impact noise is loud. Thus, the force acting on the closed door is small, and the force required to open the door is small. However, even if the door rotates slightly before closing, but when the door is slightly rotated, if the “force acting on the door” suddenly increases and the door accelerates, the impact sound becomes so large that it cannot be ignored.

When the contact Gjc provided at the tip of the rotating body Jc contacts the door frame W, the force of the spring that rotates the link A becomes strong and the magnitude of “the force Fb that the wheel B presses the sliding surface K”. Regardless, the door is sealed by the restoring force of the push spring U, and the sealing operation is substantially constant regardless of the closing start opening.

The sealing prevention means applies a force in the opposite direction to the force urging the door in the closing direction, and sudden deceleration with a slight rotation of the door receives the same impact as at the time of collision. The “force in the direction of opening the door” does not suddenly act on the door rotating in the closing direction, but gradually increases the speed while rotating the door as much as possible to decelerate the door.
In FIG. 1, simultaneously with the release of the sealing prevention means, the sealing force stored in the spring acts on the door at once. In FIG. 2, the sealing prevention means is gradually released while the sealing force is stored in the spring. The sealing force stored in the spring gradually acts on the door.

As shown in FIG. 2 (a), a rotating body J is rotatably supported around a fixed support shaft Sw provided on the door frame W, and a wheel B is mounted on a connecting shaft P provided at the tip of the rotating body J. Then, link A is connected. A wheel BB is mounted on a rotating shaft Ib of a wheel provided at the tip of the link A.
Rsw is a trajectory of the circular motion of the connecting shaft P around the fixed support shaft Sw. The rotating body J is rotated in the direction of the arrow 1 in the figure by an urging means (not shown), and the rotating shaft Ib of the wheel BB is moved to the door frame W. It moves in the direction of arrow 3 in the figure along a groove H that is provided and is substantially parallel to the “closed door surface D0”.
The wheel B moves in a direction away from the pivot O while pressing the sliding surface K in the entire rotation range of the door, and rotates the door. The wheel BB decelerates the door while pressing the sliding surface KK just before closing.

As shown by a broken line in FIG. 2A, when the wheel B is fully opened, the wheel B presses the starting end K0 of the sliding surface K and the door stops. As indicated by a solid line in FIG. 2A, the wheel B presses the corner K1 of the sliding surface K in the “range (A)” and the door rotates. The action line of the force Fb that the wheel B presses the sliding surface K rotates around the rotation axis Ib of the wheel, but the movement of the “contact point b between the sliding surface K and the wheel B” is small, and the pivot O Revolve around.
As shown in FIG. 2B, in the “switching range”, the wheel B moves away from the pivot O while pressing the intermediate portion K2 of the sliding surface K. At this time, the sliding surface KK0 facing the door frame W on the back side of the sliding surface K moves along the sliding surface Kw provided on the door frame W, and the contact point bk between the sliding surface KK0 and the sliding surface Kw is connected. Located in the middle of the contact point b between the shaft C1, the wheel B and the sliding surface K2, the door stops.

The sliding surface K is rotatably supported around the connecting shaft C, and the connecting shaft C is movably attached to the door D via the rotating body Jc, and is closed by moving from the C1 position to the C2 position. Even if the force for rotating the door is insufficient, the rotating body Jc can rotate, and the telescopic portion starts to close again, and continues to move even when the door is stopped. The rotating body Jc is urged by the push spring U in the direction of the arrow 3 in the figure and engages with the contact Gjc, and the connecting shaft C stops at the position C1 in the “(range)”. As the door decelerates just before closing and approaches the stop state, the “force acting on the door” increases, and the rotating body Jc overcomes the force of the push spring U and rotates in the opposite direction to the arrow 3 in the drawing to come off from Gjc.
The wheel B fits into the depression K3 at the end of the sliding surface K and rotates around the connecting shaft C2 moved from the rotating body Jc as shown in FIG. And the connecting shaft C2 approach the state where they are arranged on a straight line, and the door D is strongly pressed against the door stop Gd.

A cam body whose outer edge sliding surface KK has a vortex shape is rotatably supported around a rotation axis Ik provided on the door, and is disengaged from the wheel BB in the process from before close to fully closed. .
The shape of the sliding surface KK in FIG. 2 is desirably a vortex shape defined by the drawing method shown in Patent Document 6, and the sliding that is set up at “an arbitrary contact point b between the sliding surface K and the wheel B”. The normal of the surface K always maintains a certain distance from the rotation axis Ik. Therefore, no matter what the position of the contact bb, the action line of the force Fbb that the wheel BB presses the sliding surface KK by the inertia force of the door keeps a constant distance from the rotation axis Ik, and the circle around the rotation axis Ik. Exercise.

The rigid body of the link A supports a large force of the door inertia force. The inertia force of the door is absorbed by expansion and contraction of the pull spring VV attached around the rotation axis Ik. When the pulling spring VV is adapted to the sliding surface Kv attached around the rotating shaft Ik, the “distance between the action line of the force Fv of the pulling spring VV and the rotating shaft Ik” is the same as that of the wheel BB. Is initially small and then gradually larger. The door inertia force is extinguished until the door is sealed by finally greatly resisting the door inertia force.
When the door inertia force disappears, the door rotates in the opening direction due to the restoration of the spring, but the large restoring force of the spring V is blocked by the “force Fb that the wheel B presses the sliding surface K”, and the door opens. Do not rotate in the direction.

FIG. 3 shows an embodiment of a door that closes and rotates the door while operating the sealing prevention means not from the middle of the closing rotation but from the beginning.
As shown in FIG. 3B, the rotating body J is rotatably supported around a fixed support shaft Sw provided on the door frame W, and the link A is connected to a connecting shaft P provided at the tip of the rotating body J. Then, the wheel B is mounted on the rotating shaft Ib of the wheel provided at the tip of the link A. The tension spring V is a biasing means for the rotating body J, and movably supports one of the attachment shafts Sa with an extension of the link A. Rsw is a trajectory of the circular motion of the connecting shaft P around the fixed support shaft Sw. The rotating body J is rotated in the direction of the arrow 1 in the figure by the pulling spring V, and the wheel B presses the sliding surfaces K1 and K2. Move away from the pivot axis O.
The door D and the link A are connected by a tension spring VV, and a wheel BB sharing the rotation axis with the wheel B is mounted on the rotation axis Ib of the wheel, and the sliding surface KK presses the wheel BB to the wheel BB. Move along.

Since the spring expands and contracts in an instant, the sliding surface KK and the wheel BB always come into contact with each other, and the rotation of the door is delayed with respect to the movement of the wheel BB. Even if they are separated from each other, the sliding spring K and the wheel BB increase the “force to draw each other” by the extension of the pulling spring V and come into contact with each other immediately. Even if the length of the pulling spring V increases or decreases during the rotation of the door, the “force that pulls the sliding surface K and the wheel BB toward each other” works.
In addition to the force of the pulling spring V, the door inertia force acts immediately before the closing, and the “force for the sliding surface K and the wheel BB to approach each other” is further increased. Thus, the rotation of the door follows the movement of the wheel BB, and the wheel BB is not moved by the rotation of the door even before the closing.

As shown in FIG. 3 (a), the sealing prevention means operates without leaving the sliding surface KK and the wheel BB from the closing start opening degree at the time of full opening to the time of full closing as shown in FIG. 3 (c). to continue. When the sealing prevention means works immediately before closing, it becomes a state close to a collision. However, when the closing action continues without interruption, the closing speed is not suddenly set to zero, and the change in the closing speed becomes continuous.
As shown in FIG. 3 (c), the sliding surface K2 is substantially parallel to the “closed door surface D0”, and the moving distance of the wheel B with respect to the slight rotation of the door is from just before the closing to the fully closing time. become longer. Moreover, as the door inertia force increases, the wheel rotation shaft Ib becomes sandwiched between the wheel B sealing force and the wheel BB sealing force, the moving speed of the wheel rotation shaft Ib is reduced, and the door is substantially stopped. become. FIG. 3 (c) shows a state immediately before sealing with a broken line. In a state where the wheel B does not detach from the sliding surface K, the solid state is shown in FIG. The wheel B is detached from the sliding surface K, and the wheel BB is fitted into the recess KKK provided at the end portion of the sliding surface KK, and the door is sealed with a large force.

FIG. 4 shows an embodiment of a door that closes and rotates the door while operating the deceleration means from the beginning, not from the middle of the closing rotation.
As shown in FIG. 4B, a link A is rotatably supported around a connecting shaft C provided on the door D, and a wheel B is mounted on a rotating shaft Ib of a wheel provided at the tip of the link A. A rotating body J is rotatably supported around a fixed support shaft Sw provided on the door frame W, and a link AA is connected to a connecting shaft P provided at a front end portion of the rotating body J. Connected to the rotation axis Ib.

The torsion spring UV is a biasing means for the rotating body J, Rsw is a trajectory of the circular movement of the connecting shaft P around the fixed support shaft Sw, and the rotating body J is rotated in the direction of arrow 1 in the figure by the pulling spring V. Then, the direction of pulling the rotating shaft Ib of the wheel is changed.
As shown in FIG. 4 (a), in the range where “(A) rotating means” works (hereinafter referred to as “(A) range”), the wheel B rotates so that the wheel B presses the sliding surface K1. The reaction force of the force that pulls the shaft Ib and the wheel B presses the sliding surface K1 resists the door closing rotation. Further, when the wheel B is pulled and moves in the direction away from the pivot axis O along the sliding surface K <b> 1, a “force for closing the door” is applied to the connection shaft C. The sliding surface K1 reduces the pressing force Fb to decelerate the door, and at the same time, a part of the pressing force Fb accelerates the door.

The axis line of the link AA (hereinafter, the straight line passing through the connecting shafts at both ends of the link is referred to as the axis line) is an action line of the force that pulls the rotating shaft Ib of the wheel, and as shown in FIG. When the shaft core wire moves in a direction away from the sliding surface K1 just before closing and crosses the connecting shaft C, the urging direction of the rotation of the link A is changed from “the direction in which the wheel B presses the sliding surface K1”. As shown in FIG. 4B, the rotation is reversed in the “direction in which the wheel B is greatly separated from the sliding surface K1”.
The link Aa is rotatably supported around a rotation axis IIa provided on the link A, and a wheel Ba is attached to the tip. The link Aa is urged away from the link A by the tension spring Va, and when the urging direction of the rotation of the link A is “the direction in which the wheel B presses the sliding surface K1”, the wheel around the rotation axis IIa. Revolution of Ba is prevented, and when the biasing direction of rotation of link A is reversed in the “direction in which wheel B is greatly separated from sliding surface K1”, the prevention of revolution of wheel Ba is released.

As shown in FIG. 4A, when the link Aa rotates and the wheel Ba revolves around the rotation axis IIa, the wheel Ba moves while pressing the sliding surface K2 along the sliding surface K2. The reaction force of the force with which the wheel Ba presses the sliding surface K2 resists the door closing rotation. Further, the wheel B moves in the direction away from the connection axis C along the sliding surface K2, so that the rotation axis Ib of the wheel is moved away from the door surface so that a large “force for closing the door” acts on the connection axis C. Become. The sliding surface K2 accelerates the door at the same time as decelerating the door. As described above, the sliding surface K that simultaneously exhibits the deceleration function and the acceleration function is provided before and after the “switching means” is operated.
When the wheel Ba further moves along the sliding surface K2, the K that faces the sliding surface K is pressed, the door is pressed against the door stop Gd, and the door is strongly sealed.

FIG. 5 shows an embodiment in which the door stops suddenly when the door rotates rapidly just before closing. A link device that connects a connecting shaft C and a fixed support shaft Sw1 with a link A and a rotating body J. The fixed support shaft Sw is movably attached to the door frame W via the rotating body Jc. Is biased by the pulling spring VV in the direction opposite to the direction of arrow 3 in the figure, and rotation in the opposite direction is prevented by Gjc.
Ro is a trajectory of the circular motion of the connecting shaft C around the pivot axis O, and Rsw1 is a trajectory of the circular motion of the connecting shaft P around the fixed support shaft Sw1. In the drawing, the directions of arrows 1, 2, and 3 indicate the moving directions of the connecting shaft P, the connecting shaft C, and the fixed support shaft Sw, respectively, in the door closing direction.

FIG. 5A shows a fully opened state, FIG. 5B shows a state just before closing, and FIG. 5C shows a fully closed state. Since the length of the spring continues to decrease, the link device does not stop halfway and continues to move, but the pivot axis O, the connection axis C, and the connection axis P are in a straight line as shown in FIG. When placed, the rotating body J becomes non-rotatable and the door stops temporarily. The “action line of the force acting on the door” passes through the pivot axis O, and the “force acting on the door” becomes zero.
At this time, the crossing angle Θda between the axis line of the door D and the axis line of the link A becomes the minimum value, and at this time, the change starts from decreasing to increasing. A push spring U is attached around the connection axis C, and the door is decelerated by suppressing a decrease in the crossing angle Θda before the closing.

As shown in FIG. 5 (b), before the closing, the rotating body J becomes non-rotatable and the door temporarily stops, but the fixed support shaft Sw is movably attached to the door frame W via the rotating body Jc. By moving from the position to the position Sw2, the rotating body J becomes rotatable, and the telescopic portion starts to close again, and continues to move even when the door is stopped.
As the door rotates at a higher speed, the “force acting on the door” is smaller, and the rotating body Jc comes into contact with Gjc by the pulling spring VV, and the fixed support shaft Sw is stationary at the position Sw1 in the drawing. As the door decelerates just before closing and approaches the stop state, the “force acting on the door” increases, and the rotating body Jc overcomes the force of the pulling spring VV and rotates in the direction indicated by the arrow 3 in the drawing to separate from Gjc.

When the pivot axis O, the connection axis C, and the connection axis P are arranged in a straight line, when the door inertia force is large, the “force acting on the door” is small, and the rotating body Jc is fixed while being engaged with Gjc. The support shaft Sw is stationary at the position Sw1 in the figure, and the rotation of the door stops suddenly. When the door inertia force is small, the rotating body Jc rotates in the direction of arrow 3 in the figure and comes off from Gjc. The exercise continues. When the fixed support shaft Sw is movably attached to the door frame W, “two types of link devices” that differ depending on the door inertia force are recognized.

As shown in FIG. 5B, the rotating body Jc can be rotated by moving the fixed support shaft from Sw1 to Sw2, but the connecting spring C is moved by the push spring U until the connecting shaft C reaches the position Ct from the position C30. A force acts to return the connecting shaft C to the position of C30. Further, a force to send the connecting shaft C to the position C30 is applied until the connecting shaft C exceeds the position Ct and reaches the position C0. The push spring U exerts a force in the direction of opening the door before the connecting axis C exceeds the position of Ct, and a force in the direction of closing the door after the position of Ct is exceeded.

The sealing prevention means closes the door while applying a force in the opposite direction to the force that rotates the door. FIG. 6 shows a “force to return the door to its original position” before the door is closed. Shows an embodiment in which the closed rotation continues.
FIG. 6 is a link device for connecting the connecting shaft C and the fixed support shaft Sw1 with the link A and the rotating body J. The wheel B is mounted on the rotating shaft Ib of the wheel provided on the door frame W, and the link A When the side moves along the wheel B, the link A bends, and the curve between the contact point b of the wheel B and the link A and the connecting shaft C works to return the door to its original position, hung just before closing. The “direction of the force acting on the door” gradually moves toward the pivot axis O.

FIG. 6A is an operation explanatory diagram of the entire process from the fully open state to the fully closed state, FIG. 6B shows a state just before the closing, and FIG. 6C shows a state when the fully closed state.
As shown in FIG. 6A, the link A is in a straight line until the side surface of the link A comes into contact with the wheel B, and thereafter bends. When the link A is curved and the length from the contact point b to the connecting shaft P is increased, the movement of the contact point b is small and the rotation of the rotation body J and the rotation of the door are delayed even though the rotation body J rotates greatly. .
If the door attempts to close due to the inertial force of the door when the movement of the contact b is small, the link A is further bent and tries to return the door.

FIG. 7 shows an embodiment of a door that continues to close and rotate while a force in the direction of opening the door acts just before closing.
FIGS. 7A and 7B are link devices that connect the connecting shaft C and the fixed support shaft Sw1 with the link A and the rotating body J, and the link A is rotatably supported around the connecting shaft C. FIG. Is longer than the length of the rotating body J, and “a straight line T passing through the pivot axis O and the fixed support shaft Sw1” and “a circle Ro which is a trajectory of the circular motion of the connection axis C around the pivot axis O” And the distance between the intersection point Pt far from the axis O with the straight line T and the circle Rsw that is the locus of the circular motion of the connecting shaft P around the fixed support shaft Sw1. Or when shortening, the motion of a link device stops in the middle of closing.

FIGS. 7 (a) and 7 (b) are explanatory views of the operation in which the movement of the link device stops at a position where the opening degree of the door is 30, and FIG. 7 (a) shows the opening degree of the door from 90 to 30. FIG. 7B is an explanatory diagram of the operation when the opening degree of the door is from 30 to 0.
The fixed support shaft Sw is movably attached to the door frame W via the rotating body Jc, and the rotating body Jc is urged by the push spring U in the direction opposite to the direction of the arrow 3 in the figure, and rotation in the opposite direction is blocked by Gjc. Is done. As shown in FIG. 7B, the rotating body Jc can be rotated by moving the fixed support shaft from Sw1 to Sw2, but the connecting spring C is moved by the push spring U until the connecting shaft C reaches the position Ct from the position C30. A force acts to return the connecting shaft C to the position of C30. Further, a force to send the connecting shaft C to the position C30 is applied until the connecting shaft C exceeds the position Ct and reaches the position C0. The push spring U exerts a force in the direction of opening the door before the connecting axis C exceeds the position of Ct, and a force in the direction of closing the door after the position of Ct is exceeded.

As shown in FIG. 7C, even when the fixed support shaft Sw is fixed, the link device can be moved by making the link A be an elastic body that is curved when it is long and is extended when it is short. FIG. 7 (c) shows an embodiment in which the link device can be moved when the link A is long, and the door can be moved before the connection axis C exceeds the position of Ct as in FIGS. 7 (a) and 7 (b). A force in the direction of opening the door acts, and after the Ct position, the force in the direction of closing the door acts.

FIG. 8 shows an embodiment of a shock absorber that rapidly reduces the door just before closing, which absorbs the kinetic energy of the door by the expansion and contraction of the spring and prevents the door from rotating in the opening direction by the restoring force of the spring. And has a low repulsion function.
FIG. 8 is an operation explanatory view of a rotation mechanism of a link device including a link A having a wheel B attached to the tip, and a sliding surface K in which the link A rotates about the rotation axis C and moves along the wheel B. Thus, when “the force Fb that the sliding surface K presses the wheel B” works in the substantially axial direction of the link A, the link A supports a large force in the axial direction and is small in the direction perpendicular to the axial direction. Rotate with force. Utilizing this feature, the force of the spring V that absorbs the kinetic energy of the door is supported in the axial direction of the link A, and the small spring VV in the direction perpendicular to the axial direction of the link A Resist rotation in the return direction.

In FIG. 8, two rotating shafts Ik spaced apart from each other are provided on a door that rotates about a pivot axis O, and a sliding surface K and a link A are rotatably supported around each of them. The cam body having the sliding surface K is mounted with “wheel BB that moves along the sliding surface Kw provided on the door frame W”, and the wheel BB slides as shown in FIGS. Revolving around the rotation axis Ik while moving along the surface Kw, the spring V is expanded and contracted.
The link A is urged by the spring VV in a direction away from the rotation axis Ik, and rotates in the direction of arrow 2 in the drawing according to the rotation of the sliding surface K.
When the force of the spring VV is slightly insufficient for the rotation in the return direction of the link A, it is a shock absorber having a low repulsion function, and when it is equal or slightly higher, it is a balancer of the lid that rotates along the horizontal rotation axis. It can be used and the lid is stationary at any opening.

The shape of the sliding surface K in FIG. 8 is preferably a vortex shape defined by the drawing method shown in Patent Document 6, and the sliding that is set up at “an arbitrary contact point b between the sliding surface K and the wheel B”. The normal of the surface K always maintains a certain distance from the rotation axis C. Therefore, regardless of the position of the contact b, the tangential direction of the circular motion about the rotation axis Ik of the contact b substantially coincides with the axial direction of the link A, and the large restoring force of the spring V is applied to the rigid body of the link A. Will support.
The sliding surface K in FIG. 8 is swingably attached between a contact G0 that prevents rotation in the direction of arrow 1 in the drawing and a contact G30 that prevents rotation in the opposite direction, and the contact G0 is the closing direction of the door D. This is a limit to the rotation of the motor and plays a role in preventing sealing. The sealing prevention means attaches such a hit to the shock absorber and not only decelerates the rotation of the door, but also sets a limit on the rotation of the door.

Since the rotating mechanism of the shock absorber used for the door is also a rotating mechanism of a balancer that supports a large weight and is stationary, the rotation of the lid D that swings between the suspension and the horizontal centering on the horizontal pivot O in FIG. The mechanism will be described. FIG. 9 (a) shows the state when suspended, FIG. 9 (b) shows the state just before the horizontal, and FIG. 9 (c) shows the state when the horizontal.
The sliding surface K is rotatably supported around the rotation axis Ik, the link A is rotatably supported around the rotation axis C, and the cam body including the sliding surface K is along the sliding surface Kd provided on the lid door D. The wheel BB which moves is mounted | worn, and as shown to Fig.9 (a)-(c), the wheel BB revolves around the rotating shaft Ik, moving along the sliding face Kd.

The link A is urged by the torsion spring UV in a direction away from the rotation axis Ik, and rotates in the direction of arrow 2 in the drawing according to the rotation of the sliding surface K. As the lid becomes horizontal, the rotational moment around the pivot axis O increases, but the wheel B attached to the tip of the link A moves away from the rotational axis Ik along the sliding surface K, and the rotational moment around the rotational axis I increases. The rotational moment works to balance it.
The shape of the sliding surface K in FIG. 9 is also preferably a vortex shape defined by the drawing method shown in Patent Document 6, and the sliding that is set up at “an arbitrary contact point b between the sliding surface K and the wheel B”. The normal of the surface K always maintains a certain distance from the rotation axis C. Therefore, the gradient of the sliding surface K with respect to the moving direction of the contact b is constant regardless of the position of the contact b. In addition, as the normal line of the sliding surface K and the axis line of the link A coincide, the crossing angle between the tangential direction of the circular motion around the rotation axis Ik of the contact b and the axis line direction of the link A is substantially constant. The rigid body of the link A supports the large restoring force of the spring V.

A Rotating body or arm B Wheel C Connection shaft D provided on the door D Metal fitting G to be attached to the door or door I Rotating shaft or rotating support shaft K Cam body or cam body sliding surface O Cam body rotating shaft Q Rotating body rotating shaft R Arc S Connection axis T of spring end Vertical line U Push spring V Pull spring W Door frame or wall surface around door frame,
Sw Fixed support shaft provided by door frame W

Claims (9)

A "opening / closing body consisting of two links" and a "rotating part consisting of one or more links" that rotate relative to each other while sharing the pivot O, and "the connecting shafts at both ends of the expanding / contracting part" are the two links Each of the links is connected with a pair or a slip pair to form a link device, and a driving rotational force Mv acting around the “drive connection shaft Sw that is not pivot O” of the link device is transmitted. Then, the rotational force Mo works around the pivot axis O, and the opening / closing device that opens and closes the opening / closing body,
A releasable means for restraining the “rotation of the link around any connecting shaft” of the link device is provided, and the “rotation of the link around any of the connecting shafts” is restrained in the middle of rotation or stopped or substantially omitted. Stop and the switchgear is characterized by continuing to move without stopping,
The above-mentioned link device is a “link device in which the expansion / contraction part and the opening / closing body do not interlock”, and a structure in which one or more links are newly added to the “link apparatus in which the expansion / contraction part and the opening / closing body interlock” or any one of the links. Either a structure replaced with a spring, or a link device having a structure in which any connecting pair of connecting shafts is replaced with a connecting pair of sliding pairs.
The structure of the “link device in which the expansion / contraction part and the opening / closing body are interlocked” is a structure in which the expansion / contraction part is formed by one spring, or the expansion / contraction part is formed by one link, and one of the “joining shafts at both ends of the expansion / contraction part” Is a structure that moves along a path provided in any of the above-mentioned “opening and closing bodies composed of two links”, or a structure of a four-bar rotation mechanism in which the expansion and contraction portion is composed of two links,
By restricting or releasing the “rotation of the link around any one of the connecting shafts” at a predetermined opening degree of the opening / closing body, the magnitude of the rotational force Mo or the force F suddenly increases. A rotation control mechanism comprising a "switching means" that changes to
The opening / closing apparatus provided with a rotation control mechanism, wherein the “switching unit” operates with little or almost no “rotation of the link around any one of the connecting shafts”. “It is a link device composed of four links and having a four-bar rotation mechanism. When the link device is engaged with or disengaged from any link, the link device stops or moves by a sliding surface that moves along any link. A link device that receives a large resistance to continue, a link device that can be moved by elastic deformation of any of the four links. "Or" any of the four connecting shafts "as in the rotating body Jc in each figure. A link device that can be moved and moved by sliding evenly. " “A link of any of the four connecting shafts is restricted by a groove, and the link device receives a great resistance to stop or continue to move, and any of the four links can be moved by elastic deformation. A link device that rolls, or “A link device that rolls so that any of the four connecting shafts can move in a sliding pair. It is a link device of four-joint rotation mechanism composed of four links, and any adjacent two links are arranged in a straight line by extending or overlapping, forming a triangle and making it impossible to move Link device that turns so that it can move by elastically deforming any of the four links, or “any one of the four connecting shafts can move in a sliding pair, like the rotating body Jc in each figure. The link device is a link device that can be attached and moved so that any one of the four links is switched from an elastic body to a rigid body. Alternatively, a link device that swings between a position where any of the four connecting shafts is not restrained. Around each of the pair of rotating shafts spaced apart from each other, a “link 1 having a sliding surface” and a “link 2 having a wheel mounted on a wheel rotating shaft provided at the tip portion” are rotatably supported. A rotating mechanism in which the link 1 and the link 2 are rotated by the movement of the wheel along the sliding surface, and the “contact point between the wheel and the sliding surface” is provided at an intermediate portion of the sliding surface. And an opening / closing device comprising a rotation mechanism characterized in that the distance between the `` action line of force passing through the wheel rotation shaft '' and one of the pair of rotation shafts is substantially constant,
Opening and closing device that suppresses the rotation of “Link 1 with sliding surface” by the rotation of “Link 2 with wheels attached to the tip” Around each of the pair of rotating shafts spaced apart from each other, a “link 1 having a sliding surface” and a “link 2 having a wheel mounted on a wheel rotating shaft provided at the tip portion” are rotatably supported. A rotating mechanism in which the link 1 and the link 2 are rotated by the movement of the wheel along the sliding surface, and the “contact point between the wheel and the sliding surface” is provided at an intermediate portion of the sliding surface. And an opening / closing device comprising a rotation mechanism characterized in that the distance between the `` action line of force passing through the wheel rotation shaft '' and one of the pair of rotation shafts is substantially constant,
An opening / closing device including a link 3 that rotates in a different speed ratio in conjunction with the rotation of the “link 1 having a sliding surface”. An opening / closing device comprising: a wheel B that presses the sliding surface K to rotate the door in the closing direction; and a wheel BB that presses the sliding surface KK to rotate the door door in the opening direction. The opening / closing device according to claim 7, wherein the sliding surface K or the sliding surface KK is substantially parallel to the "closed door surface D0". The opening / closing apparatus according to claim 7 or 8, wherein a force for rotating the door in the closing direction and a force for rotating the door in the opening direction act simultaneously.

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