JP2022020023A - Openable door opening/closing device - Google Patents

Abstract

To provide an openable door opening/closing device which has a simple structure, and enables self opening/closing of the door by a simple operation.SOLUTION: An openable door opening/closing device H includes: an inclined cam 42 which can freely slide in conjunction with a lifting operation of a pedal 41 of a stepping part 40; a rotary plate cam operation part which rotates a rotary plate cam; and an upper part cam 71 and a lower part cam 81 which have inclined cam surfaces 72, 82, respectively. The upper part cam 71 and the lower part cam 81 are pivotally supported by a rotary shaft 66 of the rotary plate cam so as to rotate freely in a state where the inclined cam surfaces 72, 82 are mutually opposing to each other, and the lower part cam 81 is rotatable in conjunction with the rotation operation of the rotary plate cam.SELECTED DRAWING: Figure 2

Description

The present invention relates to a switchgear for opening and closing a hinged door, which can be opened and closed by stepping on the door.

Generally, it is assumed that the opening door of a toilet or the like is opened and closed by hand. However, in recent years, it has been desired to develop a device operated by a foot as a measure to prevent the adhesion of viruses, bacteria, etc., or as a countermeasure in a situation where the hand cannot be used.

In connection with such a device, a lock device for a toilet door operated by a foot is known (Patent Document 1). In addition, there is a mechanism (for example, a gravity hinge) for returning the operated hinged door to the current state (Reference 2).

Japanese Unexamined Patent Publication No. 10-131586 Japanese Unexamined Patent Publication No. 2004-346719

However, due to various reasons such as cost and installation space for toilet booths, there is almost no practical device that opens and closes a stationary open door by stepping on it, and its development has been desired. ..

The present invention has been made to solve the above problems, and an object of the present invention is to provide a switchgear for opening and closing a hinged door, which has a simple structure and can be self-closed and self-opened by a simple operation. ..

In order to achieve the above object, the open door opening / closing device of the present invention (hereinafter referred to as "main open door opening / closing device") is a hinged door opening / closing device for opening / closing the hinged door, and is a footstep body and the above. An inclined cam (first inclined cam) that is slidable in conjunction with the ascending / descending motion of the foot tread, a rotary plate cam that is attached so that the rotation axis is vertical, the inclined cam, and the above. A rotary plate cam operating unit that is interposed between the rotary plate cam and rotates the rotary plate cam in the forward and reverse directions with respect to the rotary shaft in conjunction with the sliding operation of the tilt cam. An upper cam and a lower cam, which are a pair of upper and lower cams and each have an inclined cam surface, are provided. The lower cam is configured to rotate in conjunction with the rotational operation of the rotary plate cam, which is pivotally supported by the rotary shaft of the plate cam so as to be movable in contact and rotatably. The cam is characterized in that it can be attached to the hinged door.

Here, the foot tread is a member such as a pedal that can be raised and lowered by operating (stepping and releasing) with the foot, and its form, position, and the like can be appropriately determined.
Further, the shape of the rotary plate cam (peripheral cam) can be appropriately determined such as an egg shape and a bean shape.

Further, the inclined cam (first inclined cam) is a member on which an inclined cam surface is formed on a contact surface with a foot tread, and its form, position and the like can be appropriately determined. In addition, in order to make the slide of the inclined cam perform a smooth operation, necessary elements such as urging means may be provided in an appropriate number and at an appropriate position.

Further, the upper cam and the lower cam need only be formed in a shape that can rotate independently with respect to the rotation axis of the rotary plate cam, and are cylindrical and regular polygons having a regular hexagon or more (particularly). , Regular hexagon, regular octagon, regular dodecagon, etc.). Further, by making the upper cam and the lower cam the same shape, it is possible to form an integral tubular shape when the inclined cam surfaces are arranged so as to face each other, which is an effective purpose. It is suitable because it can be operated and formed compactly.
It is assumed that the upper cam is attached to the hinged door via an appropriate attachment member.

Further, in the main hinged door opening / closing device, the highest top (highest top) and the lowest valley (lowest valley) are point-symmetrical with respect to the center of rotation of the inclined cam surface in the upper cam and the lower cam. It is preferable that the position is formed so as to have a continuous gradient up to the highest peak and the lowest valley, because the action can be effectively exerted.

However, the inclined cam surfaces of the upper cam and the lower cam may have various forms as long as the highest peak and the lowest valley are formed at one place each. For example, in order to enable stable operation, a plurality of circumferential bands are provided concentrically with respect to the upper cam and the lower cam, and the highest peak and the lowest valley are formed in each circumferential band. You may.

Further, by engaging the upper uppermost portion of the lower cam with the downward uppermost portion of the upper cam with respect to the rotation axis, the self-closing operation of the open door on which the main open door opening / closing device is mounted is started. Become. Therefore, it is necessary to appropriately determine the shapes and rotation angles of the upper cam and the lower cam so that the relative rotation angle of the lower cam with respect to the rotation shaft satisfies the above condition.

The main hinged door opening / closing device includes a foot tread, an inclined cam, a rotating plate cam, an upper cam and a lower cam, and the upper cam and the lower cam face each other with the inclined cam surface facing each other. In the superposed state, the lower cam is rotatably supported on the rotating shaft of the rotating plate cam, and the lower cam can rotate in conjunction with the rotating operation of the rotating plate cam in the forward and reverse directions. It is configured to be. Therefore, by lowering the footstep, the lower cam is rotated via the rotary plate cam to move the inclined cam surface to an appropriate position, and by raising the footstep, the lower cam is rotated in the opposite direction. Can be made to. Then, the upper cam attached to the hinged door is moved along the inclined cam surface of the lower cam by the weight of the hinged door and rotated, so that the hinged door can be self-opened or self-closed. ..

Further, in the main hinged door opening / closing device, the rotary plate cam operation unit is interlocked with the slide operation of the inclined cam (first inclined cam), the link member that slides and moves, and the slide operation of the link member. It is preferable to have a rotary plate cam operating body for rotating the rotary plate cam with respect to the rotary shaft while sliding the cam, in order to easily realize the structure. ..

Here, the forms of the link member and the rotating body can be appropriately determined.
Further, the rotary plate cam operation unit may be provided with necessary elements such as urging means in an appropriate number and at an appropriate position in order to perform smooth operation.

It is also possible to provide the main hinged door opening / closing device with a rotational force damping means for damping the rotational force acting on the lower cam when the footstep is raised.

Here, the rotational force damping means is a means for dampening the rotational force acting in one direction on the lower cam (rotational force acting on the lower cam when the foot tread is ascending). Depending on the configuration of the hinged door opening / closing device, braking means such as various dampers (rotary damper, single cylinder damper, etc.) can be used.

According to the main hinged door opening / closing device, a rotational force damping means for dampening the rotational force acting on the lower cam when the foot tread is raised is provided, and the hinged door is slowly closed when the door is closed. Therefore, it is possible to prevent the user from colliding with the hinged door.

According to the present invention, it is possible to provide a switchgear for opening and closing a hinged door which has a simple structure and can be self-closed and self-opened by a simple operation.

It is a perspective view of the open door (when the door is opened) to which the open / close device of the open door of the present invention is attached. It is a perspective view of the opening / closing device of a hinged door of this invention. It is an exploded perspective view of the opening / closing device of the hinged door of this invention seen from the front upper side. It is an exploded perspective view which looked at the opening and closing device of the hinged door of this invention from the rear lower part. It is a figure (when the pedal is raised up) which shows the operation of the opening / closing device of the hinged door of this invention, (a) is the perspective view seen from the front upper part, (b) is the perspective view seen from the front lower part. (Only the main part is shown). It is a figure which shows the operation of the opening / closing device of the hinged door of this invention (when the pedal is lowered at the lowest position), (a) is the perspective view seen from the front upper part, (b) is the perspective view seen from the front lower part. (Only the main part is shown). (A) is a perspective view (when the pedal is raised to the maximum when the door is opened) showing the operation of the opening / closing device for the hinged door of the present invention, and (b) is the highest top of the upper cam and the lower cam in (a). It is explanatory drawing which shows the positional relationship (top view) schematically. (A) is a perspective view (when the pedal is fully lowered when the door is opened) showing the operation of the opening / closing device for the hinged door of the present invention, and (b) is the highest top of the upper cam and the lower cam in (a). It is explanatory drawing which shows the positional relationship of. (A) is a perspective view (when the pedal is raised when the door is opened) showing the operation of the opening / closing device for the hinged door of the present invention, and (b) is the highest top of the upper cam and the lower cam in (a). It is explanatory drawing which shows the positional relationship (top view) schematically. (A) is a perspective view (when the door is closed) showing the operation of the opening / closing device for the hinged door of the present invention, and (b) is the positional relationship (top view) of the highest tops of the upper cam and the lower cam in (a). It is explanatory drawing which shows schematically. It is a perspective view which shows the open door (when the door is closed) to which the open / close device of the open door of this invention is attached. It is explanatory drawing which shows typically the positional relationship (top view) of the highest top part of the upper cam and the lower cam at the time of opening a door of the opening door opening / closing device of this invention.

Hereinafter, an embodiment of the main hinged door opening / closing device will be described in detail with reference to the drawings. In the description of the drawings, the same elements are designated by the same reference numerals, and duplicate description is omitted.

(1) Configuration [Mounting location of main door opening / closing device]
As shown in FIG. 1, in the present embodiment, it is assumed that the main hinged door opening / closing device H is provided in the toilet booth.

This toilet booth is orthogonal to the two horizontal partition panels (not shown) installed vertically from the wall and the horizontal partition panel with a predetermined opening to form the entrance. The left and right panels L and R (support members) installed facing each other are divided into a rectangular space in a plan view. Further, an upper frame W is horizontally laid on the upper surfaces of the left panel L and the right panel R. Then, at the entrance portion, the door panel D (opening / closing body) which is a hinged door is rotatably attached by being supported by the upper frame W at the upper end portion on the door tail side by using a known hinge C. There is.

The door panel D is a type that opens to the inside (toilet bowl side) of the toilet booth so that it is not opened to the outside more than the entrance is closed, that is, the door panel D is configured to rotate in a range of 90 degrees. ing.

Further, a known foot operation lock J is attached to the lower corner portion on the inner surface of the toilet booth, which is on the door end side of the right panel R. The foot operation lock J can lock and unlock the door panel D by stepping on the pedal portion J1 and switching between protrusion and exit (movement to the right panel R side) of the lock body J2 to the door panel D side. There is.

[Book swing door opening / closing device]
The main hinged door opening / closing device H is a rotation for operating the housing 10, the guide base 20 arranged inside the housing 10, the footstep portion 40, the cam portion 60, and the cam portion 60. The plate cam operation unit 50 is the main unit (FIGS. 2 to 4).
In the following description, the left-right direction corresponds to the direction away from the left panel L in FIG. 1 and the direction close to the left panel L, and the front-rear direction corresponds to the right panel R direction and the left along the upper frame W. Corresponds to the panel L direction.

(Case)
The housing 10 is formed of a housing body 11 forming a bottom surface 12 and side surfaces 11b to 11f, and a top plate 13 that closes the upper surface of the housing body 11 and is attached by a pin 16. The housing 10 has a modified hexagonal shape in which one corner portion of the rectangular shape is cut into a rectangular shape, and the cut portion serves as a mounting portion to the lower corner portion of the left panel L (hereinafter referred to as a mounting portion). , This portion may be referred to as "left panel mounting portion 10a"). In the housing 10, one side surface of the left panel mounting portion 10a and the end portion on the side far from the entrance portion in the front are open where the tip of the pedal 41 of the following foot portion 40 protrudes.
An insertion hole 13a for inserting the rotation shaft 66 is formed in the front corner portion of the upper surface plate 13 on the left panel mounting portion 10a side.

(Guide base)
The guide base 20 is a base for arranging the foot step portion 40, the cam portion 60, and the rotary plate cam operation portion 50 in the housing 10. Then, from the left side to the right side of the guide base 20, a left image portion S1 for installing the footstep portion 40, a central space portion S2 for installing the rotary plate cam operation portion 50, and a cam portion 60 are installed. The right image section S3 of the above is provided adjacent to each other (FIGS. 3 and 4).

The guide base bottom plate 21 is formed to have substantially the same shape as the bottom surface 12 of the housing body 11.
A U-shaped partition 22 is arranged on the side surface of the guide base bottom plate 21 facing the left panel mounting portion 10a so that the front is open, so that the guide base bottom plate 21 is defined as the left image section S1. , The footstep portion 40 is installed inside the left painting portion S1. The guide base bottom plate 21 in the left image portion S1 is formed with an arc hole 21a having a predetermined length centered on the rear corner portion. Since the central protrusion 51a of the link bar 51 described later is inserted into the arc hole 21a, it needs to be provided at a position corresponding to the central protrusion 51a.
Further, a pin hole 21c is formed in the left corner portion behind the left image portion S1 in the guide base bottom plate 21.

The central space portion S2 is formed on a part of the front plate 23a, the rear plate 24a, the arcuate side plate 25 and the corner portion 26, and the upper surfaces of the front plate 23a, the rear plate 24a, the arcuate side plate 25 and the corner portion 26. It is formed as a lower space portion surrounded by the provided upper surface horizontal plate 27.
Further, in the central space portion S2, due to the action of the inclined cam 42, the link bar 51, the first urging spring 44 and the second urging spring 56, the rotary plate cam operating body 52 described later expands and contracts the second urging spring 56. It is formed into a modified hexagonal shape that is larger in size and similar in shape to the rotating plate cam operating body 52 so that it can be moved in parallel to the above.

The arc-shaped side plate 25 is formed in a 45-degree arc portion (in a plan view). Further, the corner portion 26 is provided between the rear plate 24a and the arcuate side plate 25, and is formed in a right-angled isosceles triangle shape (plan view). Then, the upper surface horizontal plate 27 has a rectangular opening (hereinafter, "rectangular opening 27a") so as to be perpendicular to the long side portion of the right-angled isosceles triangle shape (hereinafter, referred to as "long side portion"). The rectangular opening 27a is formed, and the rectangular opening 27a communicates with the central space portion S2.

On the long side of the corner portion 26, two cylindrical spring winding portions 28 for inserting the second urging spring 56 are arranged side by side in the longitudinal direction of the rectangular opening 27a.
The upper surface horizontal plate 27 is provided at a position lower than the upper edge of the left image portion S1 by a predetermined height. Further, the upper surface horizontal plate 27 is formed from a rectangular shape into an arc shape, an isosceles triangle shape, and a deformed shape obtained by cutting the rectangular opening 27a.

The right image setting portion S3 is other than the curved surface portion 32 connected to the arcuate side plate 25, the deformed horizontal plate 31 formed from the rectangular portion 33 (FIG. 5A), and the constituent parts of the central space portion S2 of the front plate 23a. , The rear plate 24b, and the side plate 34 are formed on the upper surface of the modified horizontal plate 31. A flat cylindrical portion 35 projects from the front corner portion of the right image setting portion S3, and a rotating plate cam 61, a lower cam 81, and a rotating shaft 66 of the upper cam 71 are inserted in the center thereof. A central hole 35a is formed for this purpose.

Further, a guide elongated groove 31a is formed at a diagonal position from the front corner portion of the curved surface portion 32 to the rear corner portion of the rectangular portion 33. The isosceles right triangle portion 63 of the rotary plate cam 61 described later can be slidably moved along the guide elongated groove 31a.

The modified horizontal plate 31 is attached at a position lower than the upper surface horizontal plate 27 forming the central space portion S2, and is formed so that the upper surface of the cylindrical portion 35 has a height substantially matching the upper surface horizontal plate 27. Has been done.

(Footstep)
The foot step portion 40 includes a pedal 41 (foot step body), an inclined cam 42, and a first urging spring 44 (a urging means) for urging the inclined cam 42, and the guide base 20. It is provided in the left painting section S1 of the above.
The pedal 41 has a substantially chevron-shaped loaf shape, and the protrusions 41c at both ends of the ends facing the front arc portion 41a are formed on the upper left and right rear ends of the left image portion S1 of the guide base 20. It is pivotally supported by the stop portion 22a. Then, it is possible to move up and down by stepping on the arc portion 41a. Further, a rectangular elongated hole 41b is formed in the central portion.

The inclined cam 42 has a trapezoidal shape (side view) inclined forward, and the inclined surface forms the inclined cam surface 42a. At the central portion of the inclined cam surface 42a, the projecting body 43 is projected in the longitudinal direction thereof. The projecting body 43 is slidably inserted into the elongated hole 41b of the pedal 41.

Further, on the bottom surface of the inclined cam 42, a long groove 42b for inserting the central protrusion 51a of the link bar 51 is formed in the width direction (the long groove 42b extending from the central portion to the end portion on the central space portion S2 side). It will play that effect).
Further, a circular recess 42c for mounting the two first urging springs 44 is formed on the rear surface of the inclined cam 42, and the first attachment is formed between the recess 42c and the guide base 20. A force spring 44 is interposed. The first urging spring 44 constantly applies an urging force in the direction of pushing forward to the inclined cam 42.

According to the above configuration, the inclined cam 42 is slidable in the front-rear direction in conjunction with the ascending / descending operation of the pedal 41, and the inclined cam 42 is attached with the first attachment when the pedal 41 is not pressed downward. By the action of the force spring 44, it returns to the front part.

(Rotating plate cam operation unit)
The rotary plate cam operation unit 50 includes a link bar 51 (link member), a rotary plate cam operation body 52, and a second urging spring 56 (a urging means) for urging the rotary plate cam operation body 52. It is a main part, and is mainly provided in the central space part S2 of the guide base 20.
The link bar 51 is an elongated plate-like body, and has a round end hole 51b formed at one end thereof and an end elongated hole 51c having a predetermined length in the longitudinal direction from the other end portion. A central protrusion 51a is provided so as to project from the center.

The rotary plate cam operating body 52 has a so-called substantially watering can shape, and includes a rectangular parallelepiped portion 53 corresponding to a water storage portion and an arm portion 54 corresponding to a spout portion. A plate cam operation pin 55 is vertically provided at the tip of the arm portion 54.
The rectangular parallelepiped portion 53 of the rotary plate cam operating body 52 is located on the inclined cam 42 side, and the arm portion 54 is inclined from the front side (door end side of the door panel D) to the rear side (door tail side of the door panel D) (flat surface). It is arranged in (visual).

Further, in order to attach the two second urging springs 56 to the rear side surface of the rectangular parallelepiped portion 53 of the rotary plate cam operating body 52 in a state of being in contact with the second urging springs 56, the second urging of the two bodies. A circular recess 53a for mounting the spring 56 is formed. The second urging spring 56 is always forward with respect to the rotary plate cam operating body 52 by inserting the spring winding portion 28 of the guide base 20 into the hollow portion and inserting the tip portion into the recess 53a. It is attached so as to exert an urging force to urge the.
Further, a guide protrusion 52a is projected downward at a corner portion different from the joint portion with the arm portion 54 on the front side of the rectangular parallelepiped portion 53 of the rotary plate cam operating body 52.

Further, the link bar 51 is rotatably attached to the guide base bottom plate 21 by inserting the pin 58 into the pin hole 21c of the guide base bottom plate 21 and the round hole 51b at the end of the link bar 51. ing. The central protrusion 51a of the link bar 51 is slidably inserted into the arc hole 21a in the guide base bottom plate 21 and the long groove 42b of the inclined cam 42. Further, the guide protrusion 52a of the rotary plate cam operating body 52 is slidably inserted into the end elongated hole 51c.

With such a configuration, the link bar 50 can be slidably moved in conjunction with the sliding operation of the inclined cam 42. The rotating plate cam operating body 52 can slide and move in conjunction with the link bar 50, and the plate cam operating pin 55 in the arm portion 54 of the rotating plate cam operating body 52 can operate.

(Cam part)
The cam portion 60 mainly includes a rotary plate cam 61, an upper cam 71, a lower cam 81, and a rotary damper 65 (rotational force damping means), and is provided on the right image portion S3 of the guide base 20.

The rotary plate cam 61 is formed as a flat cam having a shape in which a circular portion 62 and an isosceles triangular portion 63 are combined in a top view. The rotary plate cam 61 has an inverted L-shape when viewed from the side, and the isosceles right triangle portion 63 is formed to have a thick thickness. A round hole 62a is formed in the circular portion 62 of the rotary plate cam 61, and a long groove 63a is formed in the isosceles right triangle portion 63 from the top to a position close to the round hole 62a.
A plate cam operation pin 55 in the rotary plate cam operating body 52 is fixedly fixed to the tip of the isosceles triangular portion 63 in the long groove 63a, and the plate cam operation pin 55 is the isosceles triangular portion of the rotary plate cam 61. The position of 63 can be moved along the guide long groove 31a of the right image setting portion S3.

The upper cam 71 and the lower cam 81 are a pair of upper and lower cams and are formed in the same shape. That is, the upper cam 71 and the lower cam 81 are formed in a deformed tubular shape having inclined cam surfaces 72 and 82 obtained by cutting a cylindrical cylinder that is flat thereof in an oblique direction. The inclined cam surfaces 72, 82 have the highest peaks 72a, 82a and the lowest valleys 72b, 82b at positions symmetrical with respect to the center of rotation, and reach the highest peaks 72a, 82a and the lowest valleys 72b, 82b. It is formed so as to have a continuous gradient up to (Fig. 2).

The upper cam 71 is arranged so that the inclined cam surface 72 faces downward, and a cylindrical mounting cylinder portion 73 for embedding is provided on the upper portion (base end portion). A cylindrical mounting space D1 is formed at the lower end edge of the door panel D, and the fitting cylinder 76a of the cam mounting body 76 is inserted into the mounting space D1. The cam mounting body 76 is formed by a fitting cylinder body 76a and a mounting plate 76b, and the mounting plate 76b is mounted on the door panel D by a screw 77. Then, the mounting cylinder portion 73 of the upper surface cam 71 is inserted into the fitting cylinder body 76a so that it can be mounted on the lower surface of the door panel D (FIG. 2).

The lower cam 81 is arranged so that the inclined cam surface 82 faces upward, and is inserted into the round hole 62a of the rotary plate cam 61 so that the lower cam 81 can operate integrally with the rotary plate cam 61. Then, the upper cam 71 and the lower cam 81 face each other with the inclined cam surfaces 72 and 82 so as to be in a superposed state, so that the central hole 71a of the upper cam 71 and the central hole 81a of the lower cam 81 are formed. They are arranged to match. A thrust bearing 84 for mounting the rotation shaft 66 (rotation shaft) described later is interposed in the upper portion of the round hole 62a of the rotary plate cam 61.

Further, a ring-shaped rotary damper 65 is interposed between the bottom surface of the lower cam 81 and the cylindrical portion 35 of the guide base 20 with the rotating shaft 66 inserted in the central portion. When the lower cam 81 rotates counterclockwise with respect to the rotation shaft 66 (rotation when the pedal 41 of the footstep 40 is raised), the rotation in one direction is damped and deceleration can be performed. There is.

Then, the upper cam 71, the lower cam 81, the rotary plate cam 61, and the rotary damper 65 are arranged in this order from the upper side, and the central holes 71a, 81a, 65a of the upper cam 71, the lower cam 81, and the rotary damper 65 are located at the same position. The rotary damper 65 is inserted into the cylindrical portion 35 of the guide base 20, and the rotary shaft 66 is inserted into the central holes 71a, 81a, 65a (including the round hole 62a of the rotary plate cam 61). Is inserted. With the above configuration, the lower cam 81 integrated with the plate cam 61 can rotate in conjunction with the rotational operation of the rotary plate cam 61, and the upper cam 71 and the lower cam 81 have a thrust bearing 84. It is rotatably supported on the rotation shaft 66 via the shaft.

The rotation shaft 66 has a convex shape (side view) in which two cylinders having different diameters are connected vertically, and is vertically installed on the bottom surface 12 of the housing 10 (perpendicular to the link bar 51). There is. The small diameter portion 66a of the rotating shaft 66 protrudes from the cylindrical portion 35 of the guide base 20 (reference numeral 21b is an insertion hole for the rotating shaft 66 provided in the guide base bottom plate 21).

[Operation of the main door opening / closing device]
Subsequently, the operation of the main hinged door opening / closing device H will be described.
The main hinged door opening / closing device H is attached to the lower corner portion of the left panel L on the right panel R side in the left panel mounting portion 10a.

Further, in the following description, it is assumed that the door panel D in the initial state is rotated 90 degrees inside the toilet booth with respect to the entrance (FIGS. 5 (a) and 5 (b), FIGS. 5 (b), FIG. 7 (a), (b)). Therefore, the highest top portion 72a of the upper cam 71 is in the direction perpendicular to the left panel L and is in the outer direction of the toilet booth (hereinafter, may be referred to as “outside the toilet”). Further, the highest top portion 82a of the lower cam 81 expects a margin angle at the time of operation in order to operate the door panel D reliably, and is slightly separated from the left panel L from the direction parallel to the left panel L (the direction in which the door panel D is slightly separated from the left panel L. In a plan view, the angle formed by the highest apex 72a of the upper cam 71 and the highest apex 82a of the lower cam 81 is an obtuse angle) (FIG. 7 (b)).
In the initial state, the upper cam 71 and the lower cam 81 do not rotate due to the positional relationship between the inclined cam surface 72 of the upper cam 71 and the inclined cam surface 82 of the lower cam 81.

(When locked)
First, a case where the door panel D is closed will be described.
Step on the pedal 41 of the footstep 40 of the main door opening / closing device H to lower it.
Then, the inclined cam surface 42a of the inclined cam 42 of the foot portion 40 is pressed and slides backward, and the central protrusion 51a of the link bar 51 moves behind the arc hole 21a of the guide base bottom plate 21.

Further, the guide protrusion 52a of the link bar 51 moves to the right image setting portion S3 side, and the guide base 20 slides toward the corner portion side in the left panel L direction against the urging force of the second urging spring 56. Moving. Then, the plate cam operation pin 55 of the rotary plate cam operation unit 50 fitted in the long groove 63a of the rotary plate cam 61 moves in a direction away from the central space portion S2, and the isosceles triangle of the rotary plate cam 61. Move with unit 63. Along with this, the lower cam 81 integrated with the rotating plate cam 61 rotates about 120 degrees clockwise around the rotating shaft 66, and the position of the highest top portion 82a of the inclined cam surface 82 on the lower cam 81 is changed. Passing through the position of the highest top 72a in the initial state of the upper cam 71 (the highest top 82a of the lower cam 81 and the highest 72a of the upper cam 71 are in mesh with each other) (FIGS. 6 (a), 6 (b), 8 (a) and 8 (b)).
(Note that in FIGS. 8, 9, 10, and 12, the operation related to the operation of the upper cam 71 is illustrated by a white arrow, and the operation related to the operation of the lower cam 81 is illustrated by a black arrow. .)

In this state, when the foot is taken off from the pedal 41 of the foot step portion 40 and the stepping is stopped, the pedal 41 is gradually raised by the urging force of the first urging spring 44. Then, the pressing force on the inclined cam surface 42a in the inclined cam 42 weakens, and the inclined cam 42 gradually slides forward. Along with this, the central protrusion 51a of the link bar 51 moves in front of the arc hole 21a of the guide base bottom plate 21, and the guide protrusion 52a of the link bar 51 moves toward the foot portion 40 side. Then, a forward urging force is applied to the rotary plate cam operating body 52 by the second urging spring 56, and the rotary plate cam operating body 52 slides to the left image setting portion S1 side (FIGS. 9A and 9B). Then, the plate cam operation pin 55 of the rotary plate cam operation unit 50 moves to the central space portion S2 side, and the rotary plate cam 61 and the lower cam 81 integrated with the rotary plate cam 61 are connected to the rotary shaft 66. Start rotating counterclockwise. At this time, due to the action of the rotary damper 65, the rotation speed becomes gentler than that when the pedal 41 is depressed (descent).

On the other hand, due to the action of the weight of the door panel D, the inclined cam surface 72 of the upper cam 71 moves along the inclined cam surface 82 of the lower cam 81, and the upper cam 71 rotates in the same direction as the lower cam 81. Along with this, the door panel D attached to the upper cam 71 rotates in the closing direction.
The upper cam 71 moves only to the position of the rotation limit of 90 degrees, but the lower cam 81 is moved to the initial position by the urging force of the first urging spring 44 and the second urging spring 56. It returns (FIGS. 10 (a) and 10 (b)).

Then, with the door panel D completely closing the entrance portion, the pedal portion J1 of the foot operation lock J is operated to project the lock body J2 toward the door panel D to lock the lock (FIG. 11).

(When the door is opened)
Subsequently, a case where the door panel D is opened will be described.
With the door panel D closing the entrance portion, the pedal portion J1 of the foot operation lock J is operated to retract the lock body J2 to the right panel R side to unlock.

At this time, the highest top 72a of the upper cam 71 is located in the outer direction of the toilet as compared with the highest top 82a of the lower cam 81. Therefore, the upper cam 71 cannot get over the highest top 82a of the lower cam 81, moves along the inclined cam surface 82 in the lower cam 81 toward the outside of the toilet, and rotates clockwise (FIG. FIG.). 12). Therefore, the upper cam 71 returns to the position in the initial state without performing any special operation. Therefore, the door panel D attached to the upper cam 71 is opened, and the door panel D is returned to the main door opening / closing device H.

[Action and effect of the main door opening / closing device]
According to the main hinged door opening / closing device H, the pedal 41 and the inclined cam 42 constituting the foot tread portion 40, the rotary plate cam 61 constituting the cam portion 60, and the upper cam 71 and the lower cam 81 are provided. The upper cam 71 and the lower cam 81 are rotatably supported by the rotation shaft 66 of the rotary plate cam 61 in a state where the inclined cam surfaces 72 and 82 face each other and are overlapped with each other. A rotary plate cam operation unit 50 including a link bar 51 and a rotary plate cam operating body 52 is provided between the inclined cam 42 of the footstep 40 and the rotary plate cam 61, and a pedal in the footstep 40 is provided. The lower cam 81, which is integrated with the rotary plate cam 61, is configured to be rotatable in conjunction with the ascending / descending operation of the 41.

Therefore, by lowering the pedal 41, the lower cam 81 can be rotated to a predetermined position via the rotary plate cam 61, the inclined cam surface 82 can be moved to an appropriate position, and the pedal 41 can be raised. By doing so, the lower cam 81 can be rotated in the opposite direction. Then, by the weight of the door panel D, the upper cam 71 attached to the door panel D is moved along the inclined cam surface 82 of the lower cam 81, and the upper cam 71 is rotated to open the door panel D by itself. Can be autistic.

Further, according to the main hinged door opening / closing device H, since the rotary damper 65 for damping the rotational force acting on the lower cam 81 when the pedal 41 of the footrest 40 is raised is provided, the door panel is provided when the door is closed. The door closing operation of D can be performed slowly. Therefore, it is possible to prevent the user from colliding with the door panel D or the like.

Further, according to the main door opening / closing device H, the door panel (open door) is locked and unlocked by using the foot operation lock J (locking device) separately, so that someone intentionally opens the main door. Even when the door opening / closing device H is operated to leave the outside of the toilet booth, the door panel D will open by itself, and unintended operation of the door panel D can be prevented.
Further, according to the main door opening / closing device H, the structure is simple, and self-closing and self-opening can be performed by a simple operation.

Although an example of a preferred embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and the design can be appropriately changed without departing from the spirit of the present invention.

In particular, there is no stipulation on the mounting location of the switchgear for the main hinged door, and operability (does not interfere with the operation, does not collide with the operator, etc.) depending on the mounting location and the hinged door, etc. Can be determined appropriately in consideration of (including).

Further, there is no limitation on the form of the hinged door to be attached, and the hinged door may be a type that is opened to the outside of the private room. In that case, the footstep body of the opening / closing device of the main hinged door needs to be attached in a state of protruding to the outside of the private room.

Further, the footstep body, the inclined cam, the rotary plate cam, the upper cam, the lower cam, the rotary plate cam operating unit (link member and the rotary plate cam operating body), and the rotational force damping means described in the claim are basic. Various components can be used as long as they have various configurations and exert their effects.

H Open door opening / closing device D Door panel J Foot operation lock S1 Left painting part S2 Central space part S3 Right painting part 10 Housing 11 Housing body 20 Guide base 21 Guide base bottom plate 21a Arc hole 25 Arc-shaped side plate 27 Top horizontal plate 27a Rectangular opening 31 Deformed horizontal plate 31a Long groove 35 Cylindrical part 35a Central hole 40 Foot part 41 Pedal (foot step body)
42 Inclined cam 42a Inclined cam surface 43 Projecting body 44 First urging spring 50 Rotating plate cam operating part 51 Link bar 51a Central protrusion 51b End round hole 51c End long hole 52 Rotating plate cam operating body 52a Guide protrusion 55 Plate cam operation Pin 56 Second urging spring 60 Cam part 61 Rotating plate cam 65 Rotary damper (rotational force damping means)
66 Rotating shaft 71 Upper cam 72, 82 Inclined cam surface 72a, 82a Highest top 72b, 82b Lowest valley 81 Lower cam

Claims (4)

In the hinged door opening / closing device for opening / closing the hinged door
The footstep body and the tilting cam that can slide in conjunction with the elevating movement of the footstep body,
A rotating plate cam mounted so that the rotating shaft is vertical,
A rotary plate cam operating unit that is interposed between the tilted cam and the rotary plate cam and that rotates the rotary plate cam with respect to the rotary shaft in conjunction with the sliding operation of the tilted cam. ,
A pair of upper and lower cams, each with an upper cam and a lower cam having an inclined cam surface, are provided.
The upper cam and the lower cam are rotatably supported by the rotating shaft of the rotating plate cam in a state where the inclined cam surfaces face each other and are overlapped with each other.
The lower cam is configured to rotate in conjunction with the rotation operation of the rotary plate cam.
The upper cam is a switchgear opening / closing device characterized in that it can be attached to the hinged door. The rotating plate cam operating unit includes a link member that slides and moves in conjunction with the sliding operation of the inclined cam.
The first aspect of the present invention is to have a rotating plate cam operating body for rotating the rotating plate cam with respect to the rotating shaft while sliding and moving in conjunction with the sliding operation of the link member. Opening and closing device for hinged doors as described in. The inclined cam surface in the upper cam and the lower cam
The claim is characterized in that the highest peak and the lowest valley are located at point-symmetrical positions with respect to the center of rotation, and are formed so as to have a continuous gradient up to the highest peak and the lowest valley. 1 or the opening / closing device for the hinged door according to claim 2. The open door according to any one of claims 1 to 3, further comprising a rotational force damping means for damping the rotational force acting on the lower cam when the foot tread is ascended. Switchgear.

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