Opening / closing device for opening door

Abstract

To provide an opening / closing device for an opening door, simple in structure and enabling self-opening / closing by a simple operation.SOLUTION: A opening / closing device H for an opening door comprises: a pedal 21; a pedal support 31; a slide body 40 that can freely reciprocate in association with an operation of the pedal 21; an end surface cam body 53; lower member rotation means 60; and a rolling roller 82 attached to a door panel D and followingly moved along an inclined cam surface 53a of the end surface cam body 53. The lower member rotation means 60 can rotate the end surface cam body 53 in association with the reciprocation of the slide body 40, and a load support member 100 for supporting a load of the door panel D is provided so as to surround the end surface cam body 53.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a device for opening and closing a swing door, which allows the swing door to be opened and closed by stepping on it. [Background technology]

[0002] The applicant has developed a swing door opening and closing device (Patent Document 1) which comprises a foot operating body, a foot operating body support member which supports the foot operating body so that the foot operating body can move freely, a sliding body which is capable of reciprocating motion in conjunction with the movement of the foot operating body, a lower member having an end cam body with an inclined cam surface formed on its peripheral edge, a rotating means for the lower member, and a driven member which is attached to the swing door and moves along the inclined cam surface of the end cam body, wherein the end cam body of the lower member is rotatably supported with the inclined cam surface facing upward, and the rotating means of the lower member is configured to be able to rotate the lower member in conjunction with the reciprocating motion of the sliding body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-164553 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional swing door opening and closing devices are attached to the underside of the swing door at the end, but when the swing door becomes heavy, a load acts on the door tip, and horizontal forces are generated on the upper, lower, and end faces of the swing door, generating a rotational force on the rotation shaft of the rotation means of the lower member. As a result, the vertical axis becomes tilted, hindering the smooth rotation of the lower member and sometimes affecting the opening and closing operation of the swing door.

[0005] The present invention has been made to solve the above problems, and aims to provide a swing door opening and closing device that allows smooth opening and closing operations even when the swing door is heavy. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a swing door opening and closing device for opening and closing a swing door, comprising: a foot operating body; a foot operating body support member that supports the foot operating body so that the foot operating body is movable; a slider that is movable back and forth in conjunction with the movement of the foot operating body; a lower member having an end cam body with an inclined cam surface formed on its peripheral edge (or the vicinity thereof; the same applies hereinafter); a rotating means for the lower member; and a driven member that is attached to the swing door and moves along the inclined cam surface of the end cam body, wherein the end cam body of the lower member is rotatably supported with the inclined cam surface facing upward, and the rotating means of the lower member is configured to rotate the lower member by a predetermined angle in conjunction with the reciprocating movement of the slider, thereby enabling an upper driven member to be positioned on the upper inclined portion of the inclined surface of the end cam body, and a load supporting member for supporting the load of the swing door is provided so as to surround the lower member.

[0007] The present invention also provides a swing door opening and closing device for opening and closing a swing door, comprising: a foot operating body; a foot operating body support member that supports the foot operating body so that the foot operating body can move freely; a slider that is capable of reciprocating motion in conjunction with the movement of the foot operating body; a lower member having a first roller body; a rotating means for the lower member; and a second roller body slidably attached to the swing door, wherein the first roller body and the second roller body are slidably arranged with their respective rotation axes intersecting at a predetermined angle, and the rotating means of the lower member is configured to be able to rotate the lower member in conjunction with the reciprocating motion of the sliding body, and a load supporting member for supporting the load of the swing door is provided to surround the lower member.

[0008] The load-bearing member is a member for stably transmitting the load of the swing door to the swing door opening / closing device, and its material, shape, form, etc. are not important, and it may be formed either integrally with other components of the swing door opening / closing device, or as a separate member.

[0009] In addition, in the swing door opening and closing device of the present invention (hereinafter sometimes referred to as "this swing door opening and closing device"), the driven member can be a roller body that slides on the inclined cam surface of the end face cam body.

[0010] Furthermore, in this swing door opening and closing device, the driven member can be a second end face cam body having an inclined cam surface formed on its peripheral edge, and the end face cam body and the second end face cam body can be formed in the same shape, with the inclined cam surfaces facing each other and the end face cam body and the second end face cam body being supported on a shaft so as to be freely rotatable in a superimposed state.

[0011] Furthermore, in this swing door opening and closing device, if the inclined cam surface of the end face cam body is formed so that the highest peak and lowest valley are positioned point-symmetrically with respect to the center of rotation and have a continuous gradient up to the highest peak and the lowest valley, this is preferable because it allows the device to function effectively.

[0012] It is assumed that the driven members (roller body and second end surface cam body) are attached to the hinged door via an appropriate attachment member.

[0013] Here, the end face cam body (the same applies to the second end face cam body, and the same applies below) is a type of three-dimensional cam, and it is sufficient that it is formed in a shape that is rotatable about the rotation axis that is the cross-sectional center of the tubular or cylindrical member, and it can be formed in a cylindrical shape (columnar shape), a regular polygonal shape greater than a regular hexagon (particularly, a regular hexagon, a regular octagon, a regular dodecagon, etc. are preferred), a cylindrical shape (regular polygonal column shape), etc. Furthermore, when an end cam body is used, the inclined cam surface of the end cam body only needs to have one highest peak and one lowest valley, and can be configured in various ways.

[0014] Furthermore, when an end face cam body (hereinafter sometimes referred to as the "first end face cam body") and a second end face cam body are used together, making them the same shape makes it possible to form an integrated cylindrical shape (columnar shape) when the inclined cam surfaces are arranged opposite each other, which is preferable because it allows the intended operation to be performed effectively and can be formed compactly. Furthermore, when the first end face cam body and the second end face cam body are used together, multiple circumferential bands may be provided concentrically for both end face cam bodies, with the highest peak and the lowest valley formed in each circumferential band.

[0015] Furthermore, when the first and second end cam bodies are used together, the highest peak of the first end cam body facing upward relative to the pivot shaft engages with the highest peak of the second end cam body facing downward, thereby starting the self-closing action of the swing door equipped with this swing door opening and closing device. Therefore, it is necessary to appropriately determine the angle of the inclined surfaces of both end cam bodies, the positions of the highest peak and lowest valley, etc., to achieve the desired effect.

[0016] Furthermore, the rotation axis of the first roller body and the rotation angle of the second roller body need to be determined so that the rotational movement of the first roller body in the restoration (return) direction that occurs after rotating the first roller body and the accompanying following movement of the second roller body attached to the hinged door are carried out appropriately.

[0017] Furthermore, it is preferable that the contact surfaces of each roller in the first roller body and the second roller body be determined so as to allow smooth rolling of the first roller body and the second roller body, such as a flat surface, a tire-like shape with an inclined surface (which may be either flat or curved) whose height gradually increases from both ends toward the center in the width direction, an umbrella-like shape with an inclined surface whose height gradually decreases from one end in the width direction, or a shape that combines each of the above shapes.

[0018] The foot operation body is a member such as a pedal that can be operated based on operation of the foot in the up-down, left-right, and front-back directions, and its shape, position, etc. can be determined appropriately. Furthermore, the movement (motion) of the foot-operated body means a vertical movement, a left-right sliding movement, a front-rear sliding movement, etc., and will differ depending on the mode of the foot-operated body. Note that the foot-operated body is configured so that once it starts moving, it returns to the state before the start of operation.

[0019] This swing door opening and closing device includes a slider that can move back and forth in response to the operation of a foot operated body, and a lower member pivoting means configured to rotate the lower member in response to the reciprocating movement of the slider. Therefore, by operating the foot operated body, the lower member can be rotated (rotated in a predetermined direction and in the opposite direction) via the reciprocating sliding movement of the slider by the pivoting means of the lower member, thereby moving the lower member to an appropriate position. The swing door can then be opened and closed automatically by moving a driven member attached to the swing door along the lower member.

[0020] Furthermore, in this swing door opening and closing device, the foot operating body support member has an inclined surface, the base end of the foot operating body is journaled on the top of the inclined surface, and the rotating means of the lower member has a linkage mechanism for linking the movement of the foot operating body with the reciprocating movement of the sliding body, a rack provided on the sliding body, and a pinion gear attached to the lower member and meshing with the rack, which is preferable because it can be easily configured.

[0021] Furthermore, in this swing door opening and closing device, the interlocking mechanism has a first link member having one end attached to the foot operating body support member, a second link member having one end attached to the sliding body, and a biasing means for applying a biasing force to the sliding body in a direction that resists the sliding movement of the sliding body when the foot operating body descends, and the first link member can be pressed by the foot operating body (this may be directly or indirectly via another member), and the other end of the first link member and the other end of the second link member are rotatably connected, which is preferable because it allows the sliding movement of the sliding body with a simple configuration.

[0022] The first link member and the second link member may be of any suitable shape as long as they are capable of forming a link mechanism. For example, the first link member and the second link member may be a crescent-shaped piece, a rectangular piece, a rod member, or the like.

[0023] Furthermore, in this swing door opening and closing device, the interlocking mechanism has a cam member, which is pivotally supported on the foot operating body support member at the pivot support portion so that it can rotate freely, and a part of the cam member can press the sliding body (this may be directly or indirectly via another member), and further, if the cam member can be pressed by the foot operating body, it is preferable because the sliding body can be slid with a simple configuration.

[0024] Here, the cam member is preferably a plate cam, which is a cam body formed in a plate shape such as a fan shape, an oval shape, or an eccentric circle (however, there is no limitation on the shape as long as the structure can achieve the desired movement). In addition, the cam member must be capable of transmitting a pressing force while at least a portion thereof (in the case of a plate cam, the peripheral portion) abutting against the sliding body (it may be capable of sliding against a portion of the sliding body and pressing the sliding portion).

[0025] Furthermore, the opening and closing device for the hinged door may be provided with a biasing force adjusting means for adjusting the biasing force of the biasing means.

[0026] Furthermore, the opening and closing device for a hinged door may be provided with a rotational force assisting means for assisting the rotational force acting on the lower member when the foot operating body starts to move. Furthermore, if the swing door is supported by the pivot axis of the lower member, this is preferable because it reduces the load caused by the weight of the door panel, etc. acting on the end cam body, driven member, first roller body, and second roller body.

[0027] For example, the rotation force assisting means may be a biasing means such as a spring that constantly applies a biasing force from above or below the end cam body in a direction that moves it closer to the swing door. However, the rotation force assisting means is particularly useful when the swing door is heavy, and is not necessarily provided when the swing door opening and closing device is used for a lightweight swing door.

[0028] Furthermore, if this swing door opening and closing device is provided with a braking means for applying a braking force to at least one of the sliding body, end face cam body, driven member or each roller body (or both) when the foot operating body is returned to the state at the start of operation, the sliding movement of the sliding body and the rotation of the end face cam body can be braked when the foot operating body is raised, and the closing movement of the swing door can be performed gently when the door is closed, which is preferable because it can prevent the user from colliding with the swing door, etc. The braking means may be any of various dampers (including linear dampers, rotary dampers, etc.). [Effects of the Invention]

[0029] According to the swing door opening and closing device of the present invention, the load support member for supporting the weight of the swing door is provided so as to surround the lower member, so that the load of the swing door can be supported by the load support member. Therefore, it is possible to prevent the rotational force caused by the weight of the swing door from acting more than necessary on the rotation axis of the rotation means of the lower member, thereby enabling the lower member to rotate smoothly. As described above, according to the present invention, it is possible to provide an opening and closing device for a swing door that allows smooth opening and closing operations even when the weight of the swing door is heavy. [Brief explanation of the drawings]

[0030] [Figure 1] 1 is a perspective view of a door panel (when the door is open) to which the opening and closing device for a hinged door of the present invention is attached. [Figure 2] 1 is an exploded perspective view of a hinged door opening and closing device according to the present invention, seen from above (front side). [Figure 3] 1 is an exploded perspective view of a hinged door opening and closing device according to the present invention, seen from below (front side). [Figure 4] 1 is a perspective view of a hinged door opening and closing device according to the present invention; [Figure 5] 1A and 1B are diagrams showing a pedal support body of a foot operation unit of an opening and closing device for a swing door according to the present invention, in which (a) is a perspective view and (b) is a bottom view. [Figure 6] 1A and 1B are diagrams showing a sliding body of an opening and closing device for a hinged door according to the present invention, in which (a) is a perspective view and (b) is a bottom view. [Figure 7] 1A and 1B are perspective views of the swing door opening and closing device of the present invention as seen from below (the cover and pedal support are omitted, and only the main parts are shown), where (a) shows the pedal at its highest position, and (b) shows the pedal at its lowest position. [Figure 8] 1 is an exploded perspective view showing a part of a mounting structure of an opening and closing device for a hinged door of the present invention to a door panel. [Figure 9] 1 is an enlarged perspective view of a portion of a door panel when a door panel mounting portion of the opening and closing device for a hinged door of the present invention is attached. FIG. [Figure 10]FIG. 1(a) is a side view showing a case where the opening and closing device for a hinged door of the present invention is attached to a door panel, and FIG. 1(b) is a partially enlarged view of the XX cross section in FIG. 1(a). [Figure 11] 1A and 1B are perspective views of the opening and closing device for a hinged door of the present invention as seen from the rear (the cover and pedal support body are omitted), where FIG. 1A shows the pedal at its highest position, and FIG. 1B shows the pedal at its lowest position. [Figure 12] 1A and 1B show the opening and closing device for a swing door of the present invention when the pedal is raised, in which FIG. 1A is a bottom view (cover omitted), and FIG. 1B is a YY cross-sectional view of FIG. 1A. [Figure 13] 12(b) is a cross-sectional view showing the opening and closing device for the swing door of the present invention when the pedal is lowered. FIG. [Figure 14] 1 is a perspective view showing the operation of the swing door opening and closing device of the present invention (when the pedal is at its highest position when the door is opened). FIG. [Figure 15] 1 is a perspective view showing the operation of the swing door opening and closing device of the present invention (when the pedal is at its lowest position when the door is opened). FIG. [Figure 16] 1 is a perspective view showing the operation of the opening and closing device for a swing door of the present invention (when the pedal is raised to open the door). FIG. [Figure 17] 1 is a perspective view showing the operation of the opening and closing device for a hinged door of the present invention (at the end of the door-opening operation). FIG. [Figure 18] 1 is a perspective view showing a hinged door (when closed) to which the hinged door opening and closing device of the present invention is attached. [Figure 19] FIG. 10 is a perspective view of the opening and closing device for a hinged door of the present invention (another embodiment). [Figure 20] FIG. 10 is a perspective view of a hinged door opening and closing device (still another embodiment) of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0031] Hereinafter, an embodiment of the swing door opening and closing device will be described in detail with reference to the drawings. In the description of the drawings, the same elements are given the same reference numerals and redundant description will be omitted. In the following description, references to front-rear and left-right directions are based on Fig. 1. In this case, the front-rear direction refers to the direction of the right panel R along the top frame W as the front direction, and the direction of the left panel L as the rear direction, and the left-right direction refers to the direction in front of the page as the left direction, and the direction in back of the page as the right direction. Furthermore, each component can be modified as appropriate, and explanations of detailed structures that are not directly related to the present invention will be omitted.

[0032] [Installation location of the main door opening / closing device] In this embodiment, it is assumed that the swing door opening and closing device H is installed in a toilet booth (FIG. 1). This toilet booth is divided into a single rectangular space in plan view by two horizontal partition panels (not shown) installed vertically from the wall and left and right panels L and R (support members) installed perpendicular to the horizontal partition panels with a predetermined opening to form the entrance. A top frame W is installed horizontally on the upper surfaces of the left panel L and the right panel R. At the entrance, a door panel D (opening / closing body), which is a hinged door, is supported by the top end of the door tail side on the top frame W using a known hinge C, allowing it to pivot freely.

[0033] The door panel D is a type that opens toward the inside of the toilet booth (toward the toilet bowl) and is configured to rotate within a range of approximately 90 degrees so that it does not open further outward than the entrance is closed.

[0034] A known foot-operated lock J is attached to the lower corner of the inside surface of the toilet booth, on the door edge side of the right panel R. The foot-operated lock J can lock and unlock the door panel D by stepping on the pedal J1 and switching the locking body J2 between protruding and retracting toward the door panel D (moving toward the right panel R).

[0035] [Configuration of the main door opening and closing device] The hinged door opening and closing device H mainly comprises a cover 10, a foot operated part 20, a sliding body 40, a rotating part 50, and a lower member rotating means 60 (FIGS. 2 to 4).

[0036] (cover) The cover 10 is formed from a top plate 11, a bottom plate 12, and a side plate 13 provided on only one side. The top plate 11 is L-shaped, and a mounting hole 11a for an end cam body 53 is formed in a protruding portion on the opening side. The bottom plate 12 has a shape that is the same shape as the top plate 11 but has a trapezoidal portion, and the rectangular side plate 13 is attached so that the top plate 11 and the bottom plate 12 partially overlap when viewed from above. The bottom plate 12 also has a mounting hole 12a for a rotation shaft 55 formed in a position that corresponds to the mounting hole 11a in the top plate 11.

[0037] (Foot operation part) The foot operation unit 20 mainly comprises a pedal 21 (foot operation body) and a pedal support 31 (foot operation body support member) that supports the pedal 21 so that the tip end can move up and down (move freely).

[0038] The pedal support 31 is formed from an inclined portion 32 that slopes forward, a rectangular parallelepiped portion 36 provided at the rear of the inclined portion 32, and a lower member mounting portion 37 provided on the side of the inclined portion 32 (Figures 5(a) and (b)).

[0039] The inclined portion 32 includes a tip portion 33 formed in a substantially semicircular shape and an elongated portion 34, and is integral with a substantially triangular triangular portion 35 provided on the side of the tip portion 33, with the tip portion 33 and the elongated portion 34 being formed in a shape similar to that of the pedal 21. In addition, a link member attachment groove 34a for attaching the first link member 62 and the second link member 63 is formed over the entire longitudinal length of the elongated portion 34. Link member mounting groove 34a is formed in a crank shape with a wide central portion, and is provided with long locking grooves 34b for locking first link member 62 on both sides near tip end 33, and long mounting grooves 34d for attaching second link member 63 on both sides near rectangular parallelepiped portion 36, each extending in the vertical direction. In addition, the portion of the side surface of link member mounting groove 34a from long mounting groove 34d to the end on the rectangular parallelepiped portion 36 side is open (not shown). The rectangular parallelepiped portion 36 has openings 36b formed at two locations on the top surface thereof.

[0040] A cylindrical hole 37a is provided across the entire height direction at a central, forward location in the lower member mounting portion 37. The cylindrical hole 37a has no hole wall on the inside, so that when a pinion gear 72 (described below) is mounted, the pinion gear 72 is exposed. Also, mounting holes 37b for the upper plate 11 of the cover 10 are formed near the side edges of the lower member mounting portion 37, and mounting holes 37c for the vertical plate 92 are formed at the rear end. Furthermore, mounting holes 37d for the load support member 100 are formed at predetermined intervals around the cylindrical hole 37a.

[0041] A ring-shaped load support member 100 is provided around the cylindrical hole 37a of the lower member attachment portion 37 of the pedal support body 31 so as to surround the cylindrical hole 37a. The load support member 100 is formed as a separate body, and is screwed to the upper plate 11 of the cover 10 by aligning peripheral attachment portions 102, which are provided at multiple locations at predetermined intervals, with attachment holes 37d of the lower member attachment portion 37 and attachment holes 11b of the upper plate 11 of the cover 10, and is also screwed to the upper plate 11 of the cover 10 at protruding attachment portions 101 (FIG. 4).

[0042] Furthermore, the inclined portion 32 and the rectangular parallelepiped portion 36 are formed with a hollow portion 38 whose width corresponds to the shape of the slide body 40 described below and whose shape corresponds to the length of the sliding range, so that the slide body 40 can be inserted into the hollow portion 38. Two circular holes 36a for attaching the biasing force adjustment means 65 described below are provided side by side on the rear wall surface inside the hollow portion 38 in the longitudinal direction.

[0043] The pedal 21 is roughly shaped like a mountain loaf of bread, and protrusions 21b at both ends of the edge opposite the front arc portion 21a are pivotally supported by locking portions 32a formed on the upper left and right rear ends of the elongated portion 34 of the inclined portion 32 of the pedal support body 31. By stepping on the arc portion 21a, the pedal 21 can be rotated up and down around the left and right locking portions 32a as fulcrums, allowing it to move up and down.

[0044] (sliding body) The slide body 40 includes a base portion 41 and a rack mounting portion 42 (FIGS. 6(a) and 6(b)). The base portion 41 is bilaterally symmetrical when viewed from above, and has an inclined surface 41a on the front surface. Two spring mounting portions 41b are arranged side by side in the longitudinal direction on the rear surface of the inclined surface 41a. The spring mounting portions 41b have curved surfaces corresponding to the cylindrical shape of the biasing spring 64 (biasing means).

[0045] A slit 41c is formed in the longitudinal center of the base portion 41 for accommodating the first link member 62 and the second link member 63, and long engaging grooves 41d are formed on both sides of the rear of the center of the slit 41c for engaging the second link member 63. Furthermore, a rectangular parallelepiped rack mounting portion 42 is provided at the tip of the right side of the base portion 41, continuing from the inclined surface 41a.

[0046] A rack 71 is provided on the outer surface of the rack mounting portion 42 over the entire length. In addition, a first damper mounting groove 43 is formed continuously in the longitudinal direction on the underside of the base portion 41 and the rack mounting portion 42, and a second damper mounting groove 44 is formed in the longitudinal direction on the other base portion 41.

[0047] The slide body 40 is slidably mounted in the hollow portion 38 of the pedal support body 31 with the link member mounting groove 34a of the pedal support body 31 and the slit 41c aligned, with the biasing spring 64 interposed therebetween. A biasing force adjusting means 65 is provided at the base end of the biasing spring 64.

[0048] The biasing force adjustment means 65 is provided at the rear end of the biasing spring 64, and includes a cross-shaped portion 66 and a screw portion 67 provided at the rear of the cross-shaped portion 66 (FIGS. 7(a), (b), 11(a), (b)). The cross-shaped portion 66 of the biasing force adjustment means 65 is inserted into the circular hole 36a of the rectangular parallelepiped portion 36 of the pedal support body 31, and is attached by the screw portion 67. The base end of each of the two biasing springs 64 has a hollow portion inserted into a cross-shaped portion 66, and by operating the screw portion 67, the position of the cross-shaped portion 66 can be changed and the length of the biasing spring 64 can be adjusted, making it possible to appropriately set the magnitude of the biasing force of the biasing spring 64.

[0049] (Rotating part) The rotating part 50 mainly comprises a lower member 51 having an end face cam body 53 and a cylindrical part 52, a rotating shaft 55 of the end face cam body 53, and a rolling roller 82 (driven member, roller body) attached to the door panel D and driven along the inclined cam surface 53a of the end face cam body 53.

[0050] Lower member 51 includes a cylindrical portion 52 and an end cam body 53 on the upper portion of cylindrical portion 52. End cam body 53 is flat and has, on its upper surface, an inclined cam surface 53a formed in the shape of a deformed cylinder obtained by cutting a cylinder diagonally and having a smaller diameter than cylindrical portion 52. Inclined cam surface 53a, highest peak 53b and lowest valley 53c are positioned point-symmetrically with respect to the center of rotation, and are formed to have a continuous gradient up to highest peak 53b and lowest valley 53c (FIGS. 11(a) and 11(b)).

[0051] Furthermore, a pinion gear 72 that meshes with a rack 71 of the slide body 40 is provided at the lower end of the end face cam body 53 (FIGS. 7(a) and 7(b)). The pinion gear 72 is formed on the circumferential surface of the lower edge of a cylindrical body 73, and the cylindrical body 73 is inserted into the cylindrical portion 52 of the end face cam body 53 to form one piece with it.

[0052] The inclination angle of the inclined cam surface 53a is determined by the magnitude of the biasing force of the biasing spring 64 described below and the magnitude of the damping force of the first damper 68, and needs to be appropriately set so that when the rolling roller 82 described below rolls on the inclined cam surface 53a during the door closing operation, the rotational position of the highest peak 53b of the end surface cam body 53 does not overtake the position of the rolling roller 82 and reach forward. In addition, the rotation angle of the end face cam body 53 varies depending on the specifications of the rack 71 and pinion gear 72, but in this embodiment, the sliding movement of the slide body 40 in one direction causes the end face cam body 53 to rotate approximately 120 degrees.

[0053] The end cam body 53 is disposed so that the inclined cam surface 53a faces upward, and is inserted into the cylindrical hole 37a of the lower member attachment portion 37 of the pedal support body 31. A pivot shaft 55 is vertically installed on the bottom plate 12 so that the center of the cylindrical hole 37a of the lower member mounting portion 37 coincides with the position of the mounting hole 12a in the bottom plate 12 of the cover 10, and the end face cam body 53 is supported rotatably relative to the pivot shaft 55 via a thrust bearing 54.

[0054] The upper end of the pivot shaft 55 has a truncated cone shape, and is attached to the underside of the bottom plate 12 with a bolt 91 using a mounting bracket 56 attached to the end. A spherical crown-shaped recess 55a is formed at the tip of the pivot shaft 55, and a lower ball body 89 is rotatably housed in this recess 55a. The upper surface of the lower ball body 89 is exposed from the recess 55a, and is capable of coming into contact with an upper ball body 85 attached to the door panel mounting portion 80 described below.

[0055] Further, an assisting spring 57 (assisting means) is provided on the underside of end face cam body 53 to apply a rotational force to end face cam body 53 when pedal 21 is lowered. Assisting spring 57 has rotating shaft 55 inserted into its hollow portion and is provided so that its upper end abuts against the underside of end face cam body 53, so that it can constantly apply an upward biasing force to end face cam body 53.

[0056] (Door panel mounting area) The door panel mounting portion 80 includes a mounting portion main body 81, a rolling roller 82, an upper ball body 85, and a sliding roller 86 (FIGS. 8 and 9). The mounting body 81 has a generally rectangular parallelepiped shape, and on its underside is provided a generally rectangular parallelepiped accommodation portion 81a for accommodating the inclined cam body 53. A spherical crown-shaped ball body support portion 81b for supporting the upper ball body 85 so that it can rotate freely is provided in the center of the upper surface of the accommodation portion 81a.

[0057] A rotation shaft insertion portion 84 is provided on the side surface of the center portion in the longitudinal direction of the storage portion 81a, and is supported so that the rotation shaft 83 is in the horizontal direction and the rolling roller 82 is rotatable in a vertical plane. A rotating shaft insertion portion 88 protrudes from the bottom surface of the mounting portion main body 81 adjacent to the storage portion 81a, and the rotating shaft 87 is supported so that it is vertical and the sliding roller 86 can rotate freely in a horizontal plane.

[0058] A spherical upper ball body 85 is housed in the ball body support portion 81b so as to be freely rotatable, and the upper ball body 85 is capable of moving in contact with a lower ball body 89 housed in a recess 55a of the rotating shaft 55.

[0059] An elongated cylindrical hole D1 is formed at the bottom edge of the door panel D, and the mounting body 81 of the door panel mounting part 80 is inserted into the hole D1 and attached to the bottom surface of the door panel D by screwing it into the mounting hole 81d.

[0060] End cam body 53 is inserted with a gap in accommodating portion 81a of mounting body main body 81 of door panel mounting portion 80, and upper ball body 85 is rotatably provided between recess 55a of rotating shaft 55 and ball body support portion 81b. In addition, rolling roller 82 is capable of rolling along the inclination of inclined cam surface 53a of end cam body 53.

[0061] The load support member 100 is provided so as to surround the cylindrical hole 37a of the lower member mounting portion 37 of the pedal support member 31, and the end face cam body 53 of the lower member 51 is inserted into the cylindrical hole 37a. Therefore, the load support member 100 is provided so as to surround the end face cam body 53 of the lower member 51. The door panel D is movable (slidable) with the sliding rollers 86 of the door panel mounting portion 80 sliding on the side wall portions of the load support member 100, and the door panel D is supported by the load support member 100 as the load support member 100 comes into contact with the door panel D (FIG. 10). Furthermore, as the rolling roller 82 moves, the door panel D to which the rolling roller 82 is attached moves together with the rolling roller 82 and is able to rotate along the periphery of the load support member 100.

[0062] (Lower member rotating means) The lower member rotating means 60 is a means for rotating the lower member 51 (particularly the end face cam body 53) in conjunction with the reciprocating movement of the slide body 40, and is equipped with a linkage mechanism 61 for linking the up and down movement of the pedal 21 with the reciprocating movement of the slide body 40, the rack 71 as already described, and a pinion gear 72 that meshes with the rack 71.

[0063] The interlocking mechanism 61 includes a first link member 62, a second link member 63, a biasing spring 64, and a first damper 68 and a second damper 69 (braking means). The first link member 62 and the second link member 63 are formed in the same roughly crescent shape, with mounting holes 62a, 63a formed at one end and thin annular protrusions 62b, 63b at the other end.

[0064] The first link member 62 and the second link member 63, which have the same shape, are turned upside down with their back surfaces facing each other and are connected by inserting a connecting pin 58 into holes formed in the protrusions 62b, 63b of both link members. The first link member 62 has a mounting pin 59 inserted into the mounting hole 62a, which is slidably suspended in the long locking grooves 34b on both sides of the pedal support body 31. The second link member 63 has a mounting pin 59 inserted into the mounting hole 63b, which is slidably suspended in the long locking grooves 41d on both sides of the slide body 40. The upper edge of the first link member 62 is slidably movable within a predetermined range while abutting against the underside of the pedal 21.

[0065] The biasing spring 64 is a member for applying a biasing force to the sliding body 40 in a direction that resists the sliding movement of the sliding body 40 when the pedal 21 is lowered, and as described above, one end of the biasing spring 64 is attached to the tip of the spring attachment portion 41b, and the other end is attached to the circular hole 36a of the rectangular parallelepiped portion 36 of the pedal support body 31. The biasing spring 64 constantly applies a biasing force to the sliding body 40 toward the inclined surface 41a of the sliding body 40 (in a direction that resists the sliding movement of the sliding body 40 when the pedal 21 is lowered).

[0066] With the above configuration, the first link member 62 and the second link member 63 are rotatably connected (axially supported) with the positions of the protrusions 62b, 63b as fulcrums and the connecting pin 58 as a support axis, so that the movement of one member can follow the movement of the other member with respect to the relative movement of the pedal 21 and the sliding body 40, and the movements of both members can be linked.

[0067] The sliding body 40 is provided with a first damper 68 for applying a braking force against the sliding force and biasing force acting when the pedal 21 of the foot operating unit 20 is raised, and a second damper 69 that acts when the pedal 21 of the foot operating unit 20 is depressed.

[0068] That is, in the above case, when the end face cam body 53 rotates counterclockwise about the rotation shaft 55, a sliding force converted from the rotational force acts on the slider 40 by the pinion gear 72 and the rack 71. The first damper 68 is an element provided to apply to the slider 40 a braking force that resists the rotational force acting on the end face cam body 53 and the sliding force of the slider 40, and is inserted into the first damper mounting groove 43 with its rod oriented in a direction that makes contact with the rear surface of the slider 40.

[0069] The second damper 69 is provided so that it can be gently depressed when the pedal 21 is depressed. Therefore, the rod is disposed in a direction that makes contact with the rear surface of the inclined surface 41a of the slide body 40, and is inserted into the second damper mounting groove 44 so that a resistance force against the downward force of the pedal 21 is applied.

[0070] (Installation method, etc.) Each of the above components is arranged in a predetermined position and is clamped by bolts 94 and nuts 95 (Figures 12(a), (b), and 13) provided at predetermined locations between the top plate 11 and the bottom plate 12 of the cover 10. The swing door opening and closing device H is attached to the lower corner of the left panel L by a vertical plate 92 attached to the rear surface of the pedal support 31 of the foot operation unit 20.

[0071] In the swing door opening and closing device H having the above configuration, the sliding body 40 is able to slide freely in the forward and backward directions (reciprocating motion) in conjunction with the up and down movement of the pedal 21 due to the action of the first link member 62, the second link member 63 and the biasing spring 64.

[0072] That is, the first link member 62 abuts against the underside of the pedal 21 and can be pressed by the pedal 21. When the pedal 21 is stepped on, a downward pressing force is applied, causing the biasing spring 64 to contract and the first link member 62 to move downward while sliding against the underside of the pedal 21, thereby allowing the second link member 63 to also move downward, with the positions of the protrusions 62b and 63b as fulcrums (FIGS. 11(a) and 12(b)). Also, when the foot is released from the pedal 21, the biasing spring 64 expands and the second link member 63 moves upward, and the first link member 62 also moves upward, with the positions of the protrusions 62b and 63b as fulcrums, returning to its forward position, allowing the pedal 21 to rise (FIGS. 11(b) and 13).

[0073] Furthermore, when rack 71 of slide body 40 slides rearward due to the operation of pinion gear 72 meshing with rack 71, end cam body 53 rotates clockwise, and when rack 71 slides forward, end cam body 53 rotates counterclockwise. Then, rolling roller 82 rolls along inclined cam surface 53a of end cam body 53, and door panel D integrated with rolling roller 82 also rotates at the same time, so that door panel D to which full-swing door opening and closing device H is attached opens and closes in conjunction with the operation of end cam body 53.

[0074] [Operation of the main door opening and closing device] Next, the operation of the full door opening and closing device H will be described. The swing door opening and closing device H is attached to the lower corner of the left panel L on the right panel R side.

[0075] In the following explanation, it is assumed that in the open door state (maximum door open angle), door panel D is rotated 90 degrees toward the inside of the toilet booth relative to the entrance (Fig. 14). In this case, in order to allow for a margin angle during operation so that door panel D can be operated reliably, highest peak 53b of end cam body 53 is on the side of right panel R and is oriented in a direction slightly away from the direction parallel to right panel R (in a plan view, the angle between the contact point with rolling roller 82 and highest peak 53b of end cam body 53 is an obtuse angle).

[0076] Furthermore, the rolling roller 82 is in contact with the inclined cam surface 53a of the end surface cam body 53 in a direction perpendicular to the left panel L and toward the inside of the toilet booth. In the open door state, the rolling roller 82 is positioned near the lowest valley portion 53c of the inclined cam surface 53a, and therefore is not rotating.

[0077] (When the door is closed) Closing the door panel D will now be described. When the pedal 21 of the foot operation unit 20 of the swing door opening and closing device H is depressed to lower it, the connecting portion between the first link member 62 and the second link member 63 is pressed by the pedal 21 and moves downward. In conjunction with this, the rear end of the second link member 63 moves rearward, and the slider 40 slides rearward. At this time, the rack 71 provided on the slider 40 moves rearward, and the pinion gear 72 meshing with the rack 71 also rotates (FIGS. 11(b) and 13). Then, the end cam body 53 rotates clockwise about the pivot shaft 55 by approximately 120 degrees, and the position of the highest peak 53b of the inclined cam surface 53a of the end cam body 53 passes the position of the rolling roller 82 in the open door state (FIG. 15).

[0078] At this time, an upward biasing force is applied to the end face cam body 53 by the auxiliary spring 57 provided on the underside of the end face cam body 53, so that the end face cam body 53 rotates smoothly against the weight of the door panel D.

[0079] In this state, when the foot is removed from the pedal 21 and the pedal pressure is stopped, the sliding body 40 is pressed forward by the biasing force of the biasing spring 64, and the rack 71 of the sliding body 40 moves forward. Accordingly, the pinion gear 72 rotates in the reverse direction from the above case, and the end cam body 53 starts to rotate counterclockwise around the rotation shaft 55. Then, as the sliding body 40 is pressed forward, the connecting portion between the second link member 63 and the first link member 62 moves forward and upward, pushing up the pedal 21 from below.

[0080] At the same time, the weight of the door panel D acts on the rolling roller 82, causing the rolling roller 82 to move along the downwardly inclined cam surface 53a of the end surface cam body 53 and rotate in the same direction as the end surface cam body 53. Accordingly, the door panel D, which moves integrally with the rolling roller 82, rotates in the closing direction (FIG. 16). Thereafter, with the door panel D completely closing the entrance (FIG. 17), the pedal J1 of the foot-operated lock J is operated to cause the locking body J2 to protrude toward the door panel D, thereby locking the door.

[0081] In the above operation, when end face cam body 53 rotates counterclockwise, a braking force acts on the rotational force of end face cam body 53 and the sliding force of slide body 40 due to the action of first damper 68, so the rotation speed is slower than when pedal 21 is depressed (lowered). Therefore, the rotation speed of end face cam body 53 is slower than the rotation speed of door panel D, which depends on the speed of rolling roller 82.

[0082] The movement of door panel D stops at the limit of its rotation, where it is parallel to right panel R. However, after the door is closed, the biasing force of biasing spring 64 causes end cam body 53 to return to the position it was in before slide body 40 was pressed down on pedal 21, so the position of highest peak 53b of inclined cam surface 53a passes the position of rolling roller 82 and returns to the position it was in before the above-mentioned operation.

[0083] (When the door is open) With the door panel D blocking the entrance, the pedal J1 of the foot-operated lock J is operated to move the locking body J2 out toward the right panel R to unlock the door (FIG. 18).

[0084] At this time, rolling roller 82 is positioned further inward than highest peak 53b of end cam body 53, and is unable to climb over highest peak 53b of end cam body 53. Therefore, rolling roller 82 moves along downwardly inclined cam surface 53a of end cam body 53, which is inward of the toilet booth, and rotates clockwise. Therefore, without any special operation, rolling roller 82 returns to the position for the open door, and door panel D, which is integrated with rolling roller 82, is opened and returns onto full-swing door opening and closing device H.

[0085] [Effects of the full swing door opening and closing device] The swing door opening and closing device H includes a slide body 40 that is capable of reciprocating motion in conjunction with the ascending and descending motion of a pedal 21, and a lower member rotating means 60 that is configured to be able to rotate an end surface cam body 53 in conjunction with the reciprocating motion of the slide body 40. The lower member rotating means 60 has an interlocking mechanism 61 for interlocking the ascending and descending motion of the pedal 21 with the reciprocating motion of the slide body 40. The interlocking mechanism 61 also includes a first link member 62, a second link member 63, and a biasing spring 64, and the lower member rotating means 60 includes a rack 71 provided on the slide body 40 and a pinion gear 72 attached to the end surface cam body 53 and meshing with the rack 71.

[0086] Therefore, by lowering the pedal 21, the sliding body 40 can be slid by the action of the first link member 62 and the second link member 63. Then, the rack 71 and pinion gear 72 provided on the sliding body 40 are meshed, causing the end face cam body 53 to rotate to a predetermined position, and the inclined cam surface 53a can be moved to an appropriate position. In addition, by releasing the pressure on the pedal 21, the action of the biasing spring 64 causes the slide body 40 to slide in the opposite direction to that described above, and the operation of the rack 71 and pinion gear 72 causes the end face cam body 53 to rotate in the opposite direction.

[0087] At this time, since the rolling roller 82 is located near the highest peak 53b of the inclined cam surface 53a, the weight of the door panel D causes the rolling roller 82 attached to the door panel D to move along the inclined cam surface 53a of the end face cam body 53, thereby allowing the door panel D to open or close on its own. As described above, according to the present invention, it is possible to provide an opening and closing device H for a full-swing door that has a simple structure and that can be self-closing and self-opening by a simple operation of the pedal 21.

[0088] Furthermore, according to swing door opening and closing device H, assisting spring 57 is provided, the upper end of which abuts against the underside of end cam body 53, and which constantly applies an upward biasing force to end cam body 53. Therefore, end cam body 53 can be rotated by the resultant force of the rotational force of pinion gear 72 acting on end cam body 53 and the upward biasing force of assisting spring 57, so that end cam body 53 can be rotated smoothly even when door panel D is heavy.

[0089] Furthermore, the opening and closing device H for the swing door is provided with a first damper 68 for applying a braking force to the sliding body 40 when the pedal 21 is raised (when the sliding body 40 moves forward). Therefore, when the pedal 21 is raised, the rotational movement of the end face cam body 53 and the sliding movement of the sliding body 40 are suppressed, and the door panel D can be closed gently, preventing the user from colliding with the door panel D.

[0090] Furthermore, the opening and closing device H for the full-swing door is provided with the biasing force adjusting means 65, so that the opening and closing speed of the door panel D can be adjusted by simply adjusting the biasing force of the biasing spring 64 without removing the entire device. Furthermore, since the biasing force can be adjusted according to the weight of the door panel D, versatility can be improved.

[0091] Furthermore, the swing door opening and closing device H is structured so that the door panel D (swing door) is locked and unlocked using a separately installed foot-operated lock J (locking device). Therefore, even if someone intentionally activates the swing door opening and closing device H and leaves the toilet booth, the door panel D will open automatically, preventing unintended operation of the door panel D.

[0092] Furthermore, according to the swing door opening and closing device H, a load support member 100 for supporting the load of the door panel D is provided so as to surround the end cam body 53 of the lower member 51. The load of the door panel D acts to rotate the door edge, but because this load can be supported by the load support member 100, it is possible to prevent the rotational force caused by the load of the door panel D from acting on the rotation shaft 55 of the end cam body 53, allowing the end cam body 53 to rotate smoothly.

[0093] Although an example of a preferred embodiment of the present invention has been described above, the present invention is not limited to this embodiment, and appropriate design changes are possible within the scope of the present invention.

[0094] In particular, there are no restrictions on the installation location of this swing door opening and closing device, and it can be appropriately determined depending on the installation location and the swing door, etc., taking into consideration operability (including not getting in the way when operating it, or not causing a collision between the operator and the swing door, etc.).

[0095] There are also no restrictions on the type of hinged door to which the device is attached, and it may be a hinged door that opens to the outside of the compartment. In that case, the foot operated body of the hinged door opening / closing device must be attached in a state where it protrudes outside the compartment.

[0096] Furthermore, the load support member 100' in the opening and closing device H' for the hinged door may not be a separate member, but may be molded integrally with the upper plate 11' (pedal support member 31') of the cover 10' (FIG. 19).

[0097] Furthermore, in the swing door opening and closing device H of the above embodiment, the door panel D is provided with the rolling roller 82, and the lower member 51 is provided with the end cam body 53. However, it is also possible to provide the end cam body on the door panel D, and the lower member with the roller body. In addition, a second rolling roller 82'' (second roller body) may be provided on the door panel D, and a first rolling roller 53'' (first roller body) (symbol 55'' indicates a rotation axis) may be used as a main component of the lower member 51'' instead of the inclined cam body 53 (Figure 20).

[0098] It is also possible to use a pair of second end face cam bodies with the same shape as the end face cam body as the driven member. In this case, it is preferable that the inclined cam surfaces have a cylindrical portion formed on the end face, and that the inclined cam surfaces are arranged to face each other and be superimposed so as to be rotatably supported by the shaft.

[0099] Furthermore, the foot operating body, foot operating body support member, slide body, end face cam body, pivoting means of the lower member (interlocking mechanism (first link member, second link member, biasing means and biasing force adjustment means, and cam member), braking means and pivoting force assisting means) and load support member described in the claims have the basic configuration, and various components can be used as long as they can produce the desired effects. [Explanation of symbols]

[0100] H, H', H" swing door opening and closing device D Door panel J Foot operated lock 10,10' Cover 20,20' Foot operation unit 21 Pedal (foot operated) 31, 31' Pedal support (foot operation body support member) 32 Slope 32a Locking part 33 Tip 34a Link member mounting groove 37 Lower member mounting part 40 Slide body 41 Base 42 Rack mounting part 50,50” rotating part 51,51” lower part 52 Cylindrical part 53 End face cam body 53" First rolling roller (first roller body) 53a Inclined cam surface 53b highest top 53c lowest valley 54 Thrust bearing 55,55” pivot axis 57 Assist spring (assisting means) 60 Lower member rotating means 61 Interlocking mechanism 62 First link member 63 Second link member 62a, 63a Mounting holes 62b,63b Protrusion 64 biasing spring (biasing means) 65 Force adjustment means 68 First damper (damping means) 69 Second damper (damping means) 71 racks 72 Pinion gear 80 Door panel mounting part 81 Mounting body 82 Rolling roller (following member, roller body) 82" Second rolling roller (second roller body) 85 Upper ball body 86 Sliding roller 89 Lower ball body 100,100' Load-bearing member

Claims

1. In a swing door opening and closing device for opening and closing a swing door, A foot operating body; a foot operation body support member that supports the foot operation body so that the foot operation body is movable; A slider that is reciprocally movable in conjunction with the movement of the foot operating body; a lower member having an end surface cam body with an inclined cam surface formed on a peripheral edge thereof; A pivoting means for the lower member; a driven member attached to the hinged door and adapted to follow along the inclined cam surface of the end surface cam body, The end surface cam body of the lower member is rotatably supported with the inclined cam surface facing upward, and the rotating means of the lower member is configured to be able to rotate the lower member in conjunction with the reciprocating movement of the slider, The hinged door opening and closing device is characterized in that a load support member for supporting the load of the hinged door is provided so as to surround the lower member.

2. In a swing door opening and closing device for opening and closing a swing door, A foot operating body; a foot operation body support member that supports the foot operation body so that the foot operation body is movable; A slider that is reciprocally movable in conjunction with the movement of the foot operating body; a lower member including a first roller body; A pivoting means for the lower member; a second roller body attached to the hinged door, The first roller body and the second roller body are slidably arranged with their respective rotation axes intersecting at a predetermined angle, the rotating means of the lower member is configured to be able to rotate the lower member in conjunction with the reciprocating movement of the slider, The hinged door opening and closing device is characterized in that a load support member for supporting the load of the hinged door is provided so as to surround the lower member.

Images