Temporary door

Abstract

To provide temporary doors that can be stacked in a stable position.SOLUTION: A temporary door 1 is installed at an entrance of a temporary structure 500 in a state where a door body 10 and a door closer 100 including a knob 120 protruding against a surface of the door body 10 and a latch 130 that moves in and out of the surface in conjunction with the rotational movement of the knob 120 are in a connected state. In the temporary door 1, at least one of the space between the door closer 100 and the door body 10 and the space between the door closer 100 and the knob 120 is provided with a connecting / separating mechanism 200 that enables them to be connected to and separated from each other; thus, this allows at least the door knob 120 to be removed from the door body 10 among the door closer 100 and the door knob 120.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a temporary door that is installed at the entrance and exit of a temporary structure that is set up around a structure such as a building or a bridge when the structure is constructed. [Background technology]

[0002] When carrying out work such as the construction, maintenance, inspection, painting, and demolition of buildings, bridges, and other structures, temporary scaffolding and temporary fences are installed around the structure to provide a foothold for work. Many of these temporary structures, such as temporary scaffolding and temporary fences, have entrances that separate the inside and outside of the work area, and removable temporary doors are installed at these entrances.

[0003] For example, Patent Document 1 below discloses a temporary door (temporary scaffolding door 1) that can be easily removed from the outside. This temporary door (temporary scaffolding door 1) is composed of a door body (2) and a door closer (9) that is integrally connected to the door body (2) and includes a knob (10) that protrudes from the surface of the door body (2) and a latch (11) that appears and disappears in conjunction with the rotational movement of the knob (10). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2019-39293 Summary of the Invention [Problem to be solved by the invention]

[0005] Temporary doors installed at the entrances and exits of temporary structures are detachably attached to the temporary structure when the temporary structure is set up. Typically, temporary doors are transported individually to a work site, such as a construction site, from outside, and then attached to an appropriate location on the temporary structure. After the construction work is completed, the doors are quickly removed from the temporary structure and carried outside. At work sites for large buildings, a large number of temporary doors are used, and multiple individual temporary doors are stacked in a predetermined location during the above-mentioned transport work. Furthermore, multiple individual temporary doors are often stacked when stored in a backyard. When stacking temporary doors in this way, the temporary door described in Patent Document 1 has a knob that protrudes from the surface of the door body, making it impossible to stack them in a stable position (flat stacking). Furthermore, a large space is required to store a large number of temporary doors.

[0006] The present invention was created in consideration of the above problems, and its purpose is to provide a temporary door that can be stacked (flat) in a stable position when it is removed from a temporary structure and in a standalone state. [Means for solving the problem]

[0007] The temporary door of the present invention for solving the above problems is a temporary door (1) that is installed at the entrance / exit (GW) of a temporary structure (500) in a state in which a door body (10) and a door closer (100) that includes a knob (120) that protrudes from the surface of the door body and a latch (130) that appears and disappears on the surface in conjunction with the rotational movement of the knob are connected to each other, and is characterized in that a connection / separation mechanism (200) is provided between the door closer and the door body and / or between the door closer and the knob, which enables them to be connected to each other and separated from each other.

[0008] According to the temporary door with the above features, at least the knob of the door closer and knob can be removed from the door body. In other words, the knob that protrudes from the surface of the door body can be separated from the door body alone or together with the door closer. As a result, the flat door body, which is the largest component of the temporary door, can be stacked in a stable position.

[0009] In addition, in the temporary door, the coupling / separation mechanism may be configured to include a switching member (210) that switches between the coupled state and the separated state.

[0010] According to the temporary door having the above-mentioned features, it is possible to provide a temporary door having a connection and separation mechanism with a simple structure that is highly reliable and advantageous in terms of cost.

[0011] Furthermore, in the temporary door, the connection / separation mechanism may further include an elastic member (220), and the switching member may be configured to be held in at least one of the connected state and the separated state with the elastic force of the elastic member.

[0012] According to the temporary door having the above features, the elastic force acts as a force that counteracts the external force, so that the switching member can be stably held in a predetermined state. This increases the stability of the operation of the connection and separation mechanism, and makes it possible to provide a temporary door with a highly reliable connection and separation mechanism.

[0013] Furthermore, in the temporary door, the connection and separation mechanism may be provided between the door closer and the door body, and at least one of the door closer and the door body may be configured to have a support member (230) that movably supports the switching member.

[0014] According to the temporary door having the above features, the door closer and the door body can be separated. This makes it possible to replace, for example, only the door closer or only the door body, thereby providing a temporary door that can extend its product life with low repair costs.

[0015] Furthermore, in the temporary door, the door closer may be configured to be separated from the door body by operating the switching member from the outside using an operating member (CP).

[0016] According to the temporary door having the above features, the door closer and the door main body can be separated by a simple operation, thereby providing a temporary door with excellent operability.

[0017] Furthermore, in the temporary door, at least one of the door body and the door closer may be configured to have openings (D112a, D112b) for inserting the operating member to be engaged with the switching member.

[0018] Furthermore, in the temporary door, at least one of the door body and the door closer may be configured to have a guide rail (31, 32), and the other may be configured to have a guided portion (first recess H1, H2) that engages with the guide rail and slides relative to it.

[0019] According to the temporary door having the above features, the door closer can be easily and reliably separated from the door body.

[0020] Furthermore, in the temporary door, the guide rail and the guided portion may each have opposing sliding surfaces (31c and 115, 32c and 116), and at least one pair of holes (D31a and D115a, D31b and D115b, D32a and D116a, D32b and D116b) through which the end of the switching member passes may be provided at a position on each opposing sliding surface where the holes communicate with each other.

[0021] According to the temporary door having the above-mentioned features, it is possible to provide a temporary door that has a simple structure and yet ensures reliable connection and separation between the door body and the door closer.

[0022] Furthermore, in the temporary door, the door closer may be configured to include a locking device (140).

[0023] According to the temporary door having the above features, it is possible to provide a temporary door with a locking function.

[0024] In the above description, in order to correspond the components of the means for solving the problem to the components of the embodiments described later, at least one of the components and symbols of the embodiments corresponding to the components of the means is written in parentheses after the components of the means. [Effects of the Invention]

[0025] According to the present invention, it is possible to provide a temporary door that can be stacked (flat stacked) in a stable position. [Brief explanation of the drawings]

[0026] [Figure 1] FIG. 1 is a front view showing a state in which a temporary door according to an embodiment of the present invention is installed in a temporary structure via a door frame. [Figure 2] FIG. 2(a) is a front view showing one aspect of a temporary door according to an embodiment of the present invention, and FIG. 2(b) is a front view showing another aspect of a temporary door according to an embodiment of the present invention. [Figure 3] FIG. 3 is an enlarged front view of the area indicated by A1 in FIG. 2(a). [Figure 4] FIG. 4 is an enlarged rear view of the area indicated by A1 in FIG. 2(a). [Figure 5] 5(a) is an enlarged left side view of the area indicated by A1 in FIG. 2(a), and FIG. 5(b) is an enlarged cross-sectional view of the area indicated by B1 in FIG. 5(a) as viewed along the arrows VI-VI. [Figure 6] 6(a) is an enlarged left side view of the area indicated by A2 in FIG. 2(b), and FIG. 6(b) is an enlarged cross-sectional view of the area indicated by B2 in FIG. 6(a) as viewed along the arrows VI-VI. [Figure 7]Figure 7(a) is a perspective view from the front upper left of the area indicated by A2 in Figure 2(b) of a temporary door according to an embodiment of the present invention, and Figure 7(b) is a perspective view from the rear lower right of the area indicated by A2 in Figure 2(b) of a temporary door according to an embodiment of the present invention. [Figure 8] FIG. 8 is a front view of a door frame to which a temporary door according to an embodiment of the present invention is connected. [Figure 9] 9 is an enlarged cross-sectional view of the area indicated by C in FIG. 8 taken along arrows VII-VII. [Figure 10] 10(a) and 10(a) are front views of a temporary door according to an embodiment of the present invention. [Figure 11] FIG. 11 is a front view of a door frame to which a temporary door according to an embodiment of the present invention is connected. [Figure 12] FIG. 12 is a front view showing a state in which the temporary door according to the embodiment of the present invention is connected to a door frame. [Figure 13] FIG. 13 is a front view showing a state in which the temporary door according to the embodiment of the present invention is connected to a door frame. [Figure 14] 14(a) and (b) are conceptual diagrams showing the state when the temporary door according to the embodiment of the present invention is connected to the door frame. [Figure 15] FIG. 15 is a perspective view of a temporary door according to another embodiment of the present invention, seen from the upper front left in the area corresponding to A1 in FIG. 2(a). [Figure 16] 16(a) and (b) are front views of a door frame to which a temporary door according to another embodiment of the present invention is connected. [Figure 17] FIG. 17 is a front view of a temporary door according to another embodiment of the present invention. [Figure 18] FIG. 18 is a front view showing a state in which a temporary door according to another embodiment of the present invention is connected to a door frame. [Figure 19] FIG. 19 is a front view showing a state in which a temporary door according to another embodiment of the present invention is connected to a door frame. [Figure 20]20(a) and (b) are conceptual diagrams showing the state when a temporary door according to another embodiment of the present invention is connected to a door frame. DETAILED DESCRIPTION OF THE INVENTION

[0027] The configuration and connection form of a temporary door 1, which is one of the preferred embodiments of the present invention, and a door frame 300 to which this temporary door 1 is rotatably connected, as well as the manner in which it is installed on a temporary structure, will be described with reference to Figures 1 to 14. Here, the front-to-rear direction, left-to-right direction, and up-to-down direction in the description are defined as the X-axis direction (+X is the front and -X is the rear), the Y-axis direction (+Y is the right side and -Y is the left side), and the Z-axis direction (+Z is the top and -Z is the bottom) in each figure, respectively. 1, which shows the temporary door 1 installed on the temporary structure 500 in a closed state, the thickness direction of the temporary door 1 corresponds to the front-to-rear direction, and the surface facing the outside of the temporary structure 500 is represented as the front surface (front face) and the surface facing the inside is represented as the rear surface (back face). The width direction of the temporary door 1 corresponds to the left-to-right direction, and the side on which the door closer 100 is installed is represented as the left side and the side on which the axis around which the temporary door 1 rotates (for example, axis C) is located is represented as the right side. The height direction of the temporary door 1 is represented as the up-down direction. Furthermore, in its connected form, the temporary door 1 rotates around the axis C of the hinges HA and HB (more specifically, the axis C of the axis portions HA and HB provided on the hinges HA and HB) which is parallel to the Z axis extending vertically in the up-down direction. Note that each figure is a conceptual diagram and does not necessarily show the actual temporary door and door frame.

[0028] [Installation of temporary door 1] First, a manner in which a temporary door 1 connected to a door frame 300 is installed at an entrance provided in a temporary structure 500 will be described with reference to Fig. 1. The temporary structure 500, such as temporary scaffolding or a temporary fence, has an entrance GW surrounded on three sides by, for example, a left support pillar 511 extending vertically in the up-down direction on the left side, a right support pillar 512 extending vertically in the up-down direction on the right side, and a cross member 520 extending horizontally in the upper left-right direction. The temporary door 1 is installed at this entrance GW via the door frame 300. Specifically, the temporary door 1 is detachably fixed to the left support pillar 511 and the right support pillar 512 using clamps CL provided on the left door frame member 310 and the right door frame member 320 of the door frame 300, which will be described later. Here, left door frame member 310 is a part that extends vertically in the up-down direction on the left side of door frame 300, and is adjacent to and extends parallel to left support pillar 511, while right door frame member 320 is a part that extends vertically in the up-down direction on the right side of door frame 300, and is adjacent to and extends parallel to right support pillar 512, and left door frame member 310 and left support pillar 511, and right door frame member 320 and right support pillar 512 are each fixed via clamps CL. Door frame 300 is also configured so that it can be temporarily placed (placed) on top of cross member 520, which is part of temporary structure 500, via temporary placement member 350, the details of which will be described later.

[0029] [Configuration of temporary door 1] Next, the structure of the temporary door 1 will be explained with reference to Figures 1 to 7. As shown in Figure 1, the temporary door 1 is mainly composed of a door body 10 and a door closer 100, and hinges HA and HB with an axis C are disposed at the upper and lower right ends, more specifically, at the right end of the upper frame member 23 and the right end of the lower frame member 24 that constitute part of the frame member 20 described below. In addition, as shown in Figures 5(b) and 6(b), the temporary door 1 is equipped with a connection / separation mechanism 200 that selectively enables the door body 10 and the door closer 100 to be in a connected state or a separated state.

[0030] [Door body 10] The door body 10 is a plate-shaped member that is approximately rectangular and extends vertically when viewed from the front, and as shown in Figures 2(a) and (b), it is composed of a frame member 20 that defines the outer peripheral edge, a reinforcing member 30 that increases the strength and rigidity of the temporary door by connecting to this frame member 20, and a plate-shaped member 40 that is arranged in the space surrounded by the frame member 20 and the reinforcing member 30.

[0031] The frame member 20 is composed of, for example, a first left vertical frame member 21A, a second left vertical frame member 21B, and a third left vertical frame member 21C, each extending vertically in the up-down direction on the left side, a right vertical frame member 22 extending vertically in the up-down direction on the right side, an upper frame member 23 extending horizontally in the upper left-right direction, and a lower frame member 24 extending horizontally in the lower left-right direction. The first left vertical frame member 21A is the highest of the three left vertical frame members, with its upper end connected to the left end of the upper frame member 23 and its lower end connected to the left end of a first horizontal member 31 serving as a reinforcing member 30 (described later). The second left vertical frame member 21B is the lowest of the three left vertical frame members, with its lower end connected to the left end of the lower frame member 24 and its upper end connected to the left end of a second horizontal member 32 serving as a reinforcing member 30 (described later). The third left vertical frame member 21C is located between the first left vertical frame member 21A and the second left vertical frame member 21B, and its upper end is connected to approximately the middle portion of the first horizontal beam member 31, and its lower end is connected to approximately the middle portion of the second horizontal beam member 32. Each of the above-mentioned members constituting the frame member 20 is formed, for example, from a rectangular cylindrical hollow member made of carbon steel.

[0032] The right end of the front and rear surfaces of the upper frame member 23 has holes for fixing a hinge HA having an axis C. Specifically, two sets of communication holes (communication holes D23A, D23B) each consisting of a pair of through-holes that penetrate the front and rear surfaces of the member and are positioned to communicate with each other are opened at predetermined positions. As will be described later, these two sets of communication holes D23A, D23B are provided to realize two different connection forms between the door main body 10 and the door frame 300, and are arranged, for example, at a predetermined distance in the horizontal direction. In addition, the right end of the lower frame member 24 has holes for fixing a hinge HB having an axis C. Specifically, one set of communication holes (communication hole D24) each consisting of a pair of through-holes that penetrate the front and rear surfaces of the member and are positioned to communicate with each other is opened at a predetermined position. The communication hole D24 is, for example, located in a position aligned with the communication hole D23A in the up-down direction (vertical direction), and is also arranged in a position offset in the left-right direction with respect to the communication hole D23B (in this embodiment, it is offset to the right with respect to the communication hole D23B). Note that the connection form between the temporary door 1 and the door frame 300 via the hinges HA and HB fixed through the communication holes D23A, D23B and the communication hole D24 will be explained later.

[0033] The reinforcing member 30 is formed, for example, from a rectangular cylindrical hollow member made of carbon steel, similar to the frame member 20, and is composed of a first horizontal cross member 31 and a second horizontal cross member 32 that are located between the upper frame member 23 and the lower frame member 24 and extend horizontally in the left-right direction parallel to these members. The left end of the first horizontal cross member 31, located at the top, is connected to the lower end of the first left vertical frame member 21A, and its right end is connected to the middle of the right vertical frame member 22. The left end of the second horizontal cross member 32, located at the bottom, is connected to the upper end of the second left vertical frame member 21B, and its right end is connected to the middle of the right vertical frame member 22. As shown in Figures 5(b), 6(b), and 7(b), two approximately cylindrical through holes D31a and D31b are opened in the underside 31c of the first horizontal cross member 31. 7(a), two substantially cylindrical through-holes D32a, D32b are formed in the upper surface 32c of the second horizontal beam member 32. The through-holes D31a, D31b and the through-holes D32a, D32b are holes through which a part of a switching member 210, which is a component of a coupling / separation mechanism 200 described later, passes, and the opening positions are set depending on the arrangement position of the switching member 210 housed in the door closer 100 and the configuration of the coupling / separation mechanism 200, etc. The shapes of these through-holes are not limited to the above shapes and may be other shapes as long as they fulfill their functions.

[0034] The frame member 20 and the reinforcing member 30 are joined to each other by, for example, welding at each of the connecting portions. Note that the connecting form is not limited to a specific one, and other mechanical connecting forms that can obtain a predetermined connecting strength, such as connecting using bolts, may also be used.

[0035] 2(b), a thin plate-like member 40 is fitted into the space surrounded by the frame member 20 and the reinforcing member 30, except for a space W surrounded by the left side surface of the third left vertical frame member 21C, the lower surface of the first horizontal rail member 31, and the upper surface of the second horizontal rail member 32. Specifically, a first plate-like member 41 is fitted into the space surrounded by the first left vertical frame member 21A, the right vertical frame member 22, the upper frame member 23, and the first horizontal rail member 31, a second plate-like member 42 is fitted into the space surrounded by the second left vertical frame member 21B, the right vertical frame member 22, the lower frame member 24, and the second horizontal rail member 32, and a third plate-like member 43 is fitted into the space surrounded by the third left vertical frame member 21C, the right vertical frame member 22, the first horizontal rail member 31, and the second horizontal rail member 32. The first plate-shaped member 41, the second plate-shaped member 42, and the third plate-shaped member 43 are each formed from a thin plate member made of, for example, hot-rolled carbon steel.

[0036] The space W is a space in which the door closer 100 is placed, and the door main body 10 and the door closer 100 are connected within this space W via a connection and separation mechanism 200 which will be described later, thereby forming the temporary door 1.

[0037] [Door Closer 100] 2(a) and (b), the door closer 100 is mainly composed of a housing 110, a knob 120 that is rotated when opening or closing the temporary door 1, a latch (latch bolt) 130 that appears and disappears from the surface in conjunction with the rotational movement of the knob 120, and a locking device 140. The knob 120 is formed so as to protrude from the surface of the door main body 10 when the door main body 10 and the door closer 100 are in a connected state.

[0038] 3 to 7, the housing 110 is a roughly rectangular box-shaped member with a small depth, and is composed of a front surface 111, a rear surface 112, a left surface 113, a right surface 114, a top surface 115, and a bottom surface 116. The internal space of the housing 110 defined by these six surfaces accommodates a pivotal support that rotatably supports the knob 120, a mechanism that links the operation of the latch 130 with the rotational movement of the knob 120, and a mechanism for the locking device 140, as well as the elements that make up the coupling / separation mechanism 200, which will be described in detail later.

[0039] The front surface 111, rear surface 112, left side surface 113, right side surface 114, top surface 115, and bottom surface 116 are each formed from a thin plate-like member made of, for example, carbon steel, and are joined to each other mechanically by welding or the like, or joined by at least a portion being integrally molded. The front surface 111 and rear surface 112, the left side surface 113 and right side surface 114, and the top surface 115 and bottom surface 116 have the same basic shape so as to form a pair. Specifically, front surface 111 and rear surface 112 form vertical surfaces that are generally rectangular in front view and generally rectangular in rear view and extend in the up-down direction, left surface 113 and right surface 114 form vertical surfaces that are generally band-shaped in left side view and generally band-shaped in right side view and extend in the up-down direction, and top surface 115 and bottom surface 116 form horizontal surfaces that are generally band-shaped in top view and generally band-shaped in bottom view and extend in the left-right direction, respectively. As a result, housing 110 has a shape that is line-symmetrical in the up-down, front-back, and left-right directions.

[0040] As shown in FIGS. 5(b), 6(b), and 7(a), the upper surface portion 115 has two generally cylindrical through-holes D115a and D115b. Furthermore, as shown in FIGS. 4 and 7(b), the rear surface portion 112 has two generally gourd-shaped through-holes D112a and D112b near the top and bottom ends and at the approximate center in the width direction as viewed from behind. Furthermore, as shown in FIG. 7(b), the lower surface portion 116 has two generally cylindrical through-holes D116a and D116b. The through-holes D115a and D115b and the through-holes D116a and D116b are holes through which the tip of a switching member 210, a component of a coupling / separation mechanism 200 described below, appears and disappears, and the opening positions are set corresponding to the position of the switching member 210. The openings D112a and D112b are holes for inserting an operating member CP, which will be described later, and are arranged at positions where at least a portion of the switching member 210 can be seen so that the switching member 210 can be operated through the operating member CP. The positions at which these through holes and openings are provided can be changed as appropriate depending on the arrangement of the switching member 210 and modifications to the structure of the connection / separation mechanism 200, and their shapes may also be other shapes as long as they fulfill their functions.

[0041] Known structures and mechanisms are appropriately used for the pivot support that rotatably supports knob 120, latch 130, and locking device 140. For example, in this embodiment, a locking release means that inputs a predetermined number via a push button is disposed on front surface 111, and locking device 140 is used in which a thumb turn is disposed on rear surface 112.

[0042] As shown in Fig. 7(a), the upper surface portion 115 is disposed below the upper edges of the front surface portion 111 and the rear surface portion 112, and the lower surface portion 116 is disposed above the lower edges of the front surface portion 111 and the rear surface portion 112, as shown in Fig. 7(b), which is a rear view of Fig. 7(a) turned upside down. As a result, a first recessed portion H1 is defined by the rear surface 111a of the front surface portion 111, the rear surface 112a of the rear surface portion 112, and the upper surface portion 115, and a second recessed portion H2 is defined by the rear surface 111a of the front surface portion 111, the rear surface 112a of the rear surface portion 112, and the lower surface portion 116.

[0043] The first recess H1 has a shape complementary to the lower end of the first horizontal rail member 31, and the second recess H2 has a shape complementary to the upper end of the second horizontal rail member 32. As a result, the door body 10 and the door closer 100 are connected to each other in a favorable state with little rattle via the first horizontal rail member 31 and the first recess H1 and the second horizontal rail member 32 and the second recess H2. Specifically, the back surface 111a that defines the first recess H1 and the front end face 31a of the first cross bar member 31, the back surface 112a that defines the first recess H1 and the rear end face 31b of the first cross bar member 31, and the upper surface 115 that defines the first recess H1 and the lower surface 31c of the first cross bar member 31, as well as the back surface 111a that defines the second recess H2 and the front end face 32a of the second cross bar member 32, and the back surface 112a that defines the second recess H2 and the rear end face 32b of the second cross bar member 32, are all opposed to each other via a small gap, and are connected to each other so that the upper surface 32c of the second cross bar member 32 abuts against the lower surface 116 that defines the second recess H2.

[0044] Furthermore, when the door body 10 and the door closer 100 are switched from a connected state to a separated state, or from a separated state to a connected state, that is, when the door closer 100 is moved relative to the door body 10 (hereinafter, this point in time may be referred to as "at the time of switching"), the first recess H1 and the second recess H2 in the above-described form also function as portions (hereinafter, sometimes referred to as "guided portions") where the surfaces facing the lower end of the first cross bar member 31 and the upper end of the second cross bar member 32, which function as guide rails, slide relative to each other and are guided in a predetermined direction.

[0045] The shapes of the first recess H1 and the second recess H2 can be modified in various ways as long as the coupling function and the function as the guided portion are not impaired. For example, by appropriately modifying the shapes of the back surface 111a of the front surface portion 111, the back surface 112a of the rear surface portion 112, the upper surface portion 115, and the lower surface portion 116 that define the first recess H1 and the second recess H2, the first recess H1 and the second recess H2 may be formed so that their cross-sectional shapes perpendicular to the sliding direction are different. According to this embodiment, the first recess H1 and the second recess H2 are asymmetrical in the vertical direction (asymmetrical with respect to the center line extending in the width direction of the housing 110), which prevents incorrect assembly in which the door closer 100 is reversed up and down or front and back. Furthermore, the recesses may be hemispherical, or a stepped shape may be used instead of the concave shape.

[0046] [Connection and separation mechanism 200] 5(b) and 6(b), the coupling / separation mechanism 200 is mainly composed of a switching member 210, an elastic member 220 that applies an elastic force to the switching member 210, and a support member 230 that supports the elastic member 220. As described above, the switching member 210, the elastic member 220, and the support member 230 are housed in the internal space of the housing 110 of the door closer 100, that is, in the space defined by the front surface 111, the rear surface 112, the left surface 113, the right surface 114, the top surface 115, and the bottom surface 116.

[0047] 7(a) and 7(b), in this embodiment, two coupling and separation mechanisms 200 having the above-described configuration are disposed at positions symmetrical in the vertical direction. The configurations of these two coupling and separation mechanisms 200 are substantially identical except that the shape, positional relationship, force input direction, and movement direction of the switching member 210 are reversed upside down. Below, the configuration of the coupling and separation mechanism 200 provided in the temporary door 1 will be explained based on the coupling and separation mechanism 200 disposed at the top, and the coupling and separation mechanism 200 disposed at the bottom will be explained as appropriate using parentheses, etc.

[0048] The switching member 210 is an approximately U-shaped member having a pair of arms 211, 212 extending approximately vertically upward and a horizontal portion 213 connecting these arms 211, 212, and is formed, for example, from a solid round bar member made of carbon steel.

[0049] Annular grooves into which snap rings SR1 and SR2 are press-fitted are formed by cutting or the like below the upper ends 211a and 212a of the arm portions 211 and 212. The snap rings SR1 and SR2 are press-fitted into these grooves to be integrated with the switching member 210, and form a contact surface with the elastic member 220 (more specifically, a first elastic member 221 and a second elastic member 222, which will be described later), and also function to transmit the elastic force of the elastic member 220 to the switching member 210. Furthermore, the snap rings SR1 and SR2 function as a stopper that stops the switching member 210 by having their upper surfaces abut against the upper surface of the door closer 100, that is, the upper surface portion 115 of the housing 110 (or the lower surface portion 116 in the connection / separation mechanism 200 disposed below).

[0050] In the switching member 210, which stops at a predetermined position due to the stopper function of the snap rings SR1 and SR2 (hereinafter, the position at which this switching member 210 stops is referred to as the "first position"), the upper ends 211a and 212a are configured to protrude a predetermined length from through holes D115a and D115a opening into the upper surface 115 of the housing 110 that constitutes the door closer 100 (in the connection / separation mechanism 200 disposed below, they protrude a predetermined length from through holes D116a and D116b opening into the lower surface 116 of the housing 110 that constitutes the door closer 100). Here, the predetermined length is set to be larger than the plate thickness t of the rectangular cylindrical hollow member that forms the reinforcing member 30. Therefore, when the door closer 100 with the switching member 210 in the first position is placed in the space W of the door main body 10, the upper end portions 211a, 212a protrude upward from the through-holes D31a, D31b opening in the lower surface 31c of the first horizontal rail member 31 constituting the door main body 10, as shown in FIG. 5(b) (in the connection / separation mechanism 200 disposed below, the upper end portions 211a, 212a protrude downward from the through-holes D32a, D32b opening in the upper surface 32c of the second horizontal rail member 32). As a result, the door main body 10 and the door closer 100 are in a state in which their relative movement is restricted by the switching member 210, i.e., they are in a connected state. Note that it is desirable to set the predetermined length (protrusion amount) to a value sufficiently larger than the plate thickness t so that the connected state is not easily released.

[0051] Furthermore, when the door closer 100 is moved relative to the door main body 10 during switching, the upper ends 211a, 212a of the switching member 210 are pushed down to a position (hereinafter, this position will be referred to as the "second position") that is at least lower than the through-holes D31a, D31b as shown in Figure 6(b) (in the connection / separation mechanism 200 disposed below, the upper ends 211a, 212a are pushed up to a position at least lower than the through-holes D32a, D32b). As a result, the restriction on relative movement between the door main body 10 and the door closer 100 via the switching member 210 is released, and the door main body 10 and the door closer 100 are able to move relative to each other.

[0052] In this embodiment, the length of the arms 211, 212 is determined based on the above-mentioned predetermined length (amount of protrusion) and the length of the elastic member 220 (more specifically, the first elastic member 221 and the second elastic member 222 described below).

[0053] 5(b) and 6(b), the elastic member 220 is composed of a first elastic member 221 and a second elastic member 222, both of which are spiral springs of the same shape, and is assembled so as to be interposed between the snap rings SR1 and SR2 and the support member 230. Specifically, the first elastic member 221 and the second elastic member 222 are assembled so that the arm portions 211 and 212 are inserted into the cylindrical inner space, the snap rings SR1 and SR2 abut against the upper ends, and the support member 230 abuts against the lower ends. The length, spring constant, etc. of the elastic member 220 (the first elastic member 221 and the second elastic member 222) are set so that, for example, when the switching member 210 is in the first position, the upward elastic force of the elastic member 220 itself is greater than the weight of the switching member 210. As a result, a predetermined elastic force is always applied to the switching member 210 in the first position from the elastic member 220 (the first elastic member 221 and the second elastic member 222).

[0054] The support member 230 is a member composed of a horizontal surface portion 231 and a vertical surface portion 232, and is formed, for example, by bending a thin plate-like member made of carbon steel into an L-shaped cross section. Two holes penetrate the horizontal surface portion 231, into which the arms 211 and 212 of the switching member 210 are inserted. Furthermore, the vertical surface portion 232 abuts against the rear surface portion 112 of the housing 110 of the door closer 100, and is joined to the rear surface portion 112 using, for example, a bolt. In this way, the support member 230 is configured as an element integrated with the door closer 100.

[0055] Since the temporary door 1 is equipped with the connection and separation mechanism 200 of the above configuration, the door body 10 and the door closer 100 are stably connected to each other in the first position, and can be easily separated from each other by switching to the second position.

[0056] That is, according to the connection / separation mechanism 200 configured as described above, the switching member 210 is held without falling via the snap rings SR1 and SR2 provided therein, the elastic member 220 (first elastic member 221 and second elastic member 222), and the support member 230. Specifically, the switching member 210 receives the reaction force of its own weight and the elastic force of the elastic member 220 as upward forces via the snap rings SR1 and SR2, and is held by the elastic member 220 and the support member 230 without falling (in the connection / separation mechanism 200 disposed below, the switching member 210 is held without falling by receiving the reaction force of its own weight and the reaction force of the elastic force of the elastic member 220 as upward forces from the lower surface portion 116 via the snap rings SR1 and SR2). As described above, a predetermined elastic force is always applied to the switching member 210 in the first position from the elastic member 220, so even if an external force is applied to the temporary door 1, the elastic force counteracts this external force, maintaining the predetermined length (amount of protrusion), and as a result, the connection between the door body 10 and the door closer 100 is maintained stably without being released.

[0057] Furthermore, by moving the switching member 210 from the first position to the second position according to the following procedure, the door main body 10 and the door closer 100 can be easily separated. That is, as shown in FIGS. 6(a), (b), and 7(b), a person performing disassembly work on the temporary door 1 inserts the tip of the operating member CP between the switching member 210 and the support member 230 through the opening D112a (or the opening D112b in the case of the coupling / separation mechanism 200 disposed below) provided in the rear surface portion 112. More specifically, the tip of the operating member CP is inserted between the horizontal portion 213 of the switching member 210 and the horizontal surface portion 231 of the support member 230. Here, the operating member CP is made of, for example, a round bar member, and a chamfered inclined surface is formed at the tip of the operating member CP. Note that in this embodiment in which two coupling / separation mechanisms 200 are disposed above and below, the operating member CP is made of a round bar member bent into a U-shape in order to operate these two mechanisms simultaneously. That is, the operating member CP includes a pair of horizontal portions and a vertical portion connecting these horizontal portions, and inclined surfaces are formed at the ends of the pair of horizontal portions facing each other. The horizontal insertion force acts via these inclined surfaces to apply a downward force to the switching member 210 (more specifically, the horizontal portion 213 of the switching member 210) of the connecting / separating mechanism 200 disposed above, and an upward force to the switching member 210 (more specifically, the horizontal portion 213 of the switching member 210) of the connecting / separating mechanism 200 disposed below. As a result, the switching member 210 disposed above is pressed down to the second position while counteracting the elastic force of the elastic member 220, and the switching member 210 disposed below is pressed up to the second position while counteracting the elastic force of the elastic member 220. Note that instead of the operating member CP configured as described above, a predetermined tool used at the assembly / disassembly site of the temporary structure 500, such as a rod-shaped tool such as a screwdriver, may be used. In this embodiment, in which two connection / separation mechanisms 200 are arranged above and below, a pair of switching members 210, 210 arranged above and below can be moved by inserting two drivers into openings D112a, D112b.

[0058] Here, in the door body 10 and door closer 100 configured as described above, the lower end of the first horizontal rail member 31 and the upper end of the second horizontal rail member 32 of the door body 10 function as guide rails, and the first recessed portion H1 and the second recessed portion H2 of the door closer 100 function as guided portions, as described above. This allows the worker to easily move the door closer 100, with the switching member 210 in the second position, in the direction in which the first recessed portion H1 and the second recessed portion H2 extend (the direction of the arrow in FIG. 7(b)) by sliding the guide rail and the guided portion relative to each other. Note that in this embodiment using a U-shaped operating member CP, the operation of separating the door closer 100 can be more efficiently performed by treating the operating member CP inserted into the openings D112a, 112b like a handle of a sliding door (for example, treating the vertical portion of the operating member CP as a grip).

[0059] Furthermore, the operation of connecting the separated door main body 10 and the door closer 100 is performed according to the following procedure. That is, the worker inserts the operating member CP into the separated door closer 100 to set the switching member 210 to the second position. After that, the guided portions (the first recessed portion H1 and the second recessed portion H2) are inserted into (engaged with) the guide rails (the lower end portion of the first horizontal rail member 31 and the upper end portion of the second horizontal rail member 32), and the door closer 100 is slid relatively in the direction opposite to the direction of the arrow in Figure 7(b). Furthermore, the door closer 100 is moved to a position where the through holes D31a, D31b in the lower surface 31c of the first horizontal rail member 31 are open and to a position where the through holes D32a, D32b in the upper surface 32c of the second horizontal rail member 32 are open. Thereafter, the operation member CP is released (pulled out) and the switching member 210 is moved to the first position, whereby the door main body 10 and the door closer 100 are connected to each other.

[0060] [Configuration of the door frame 300] Next, the configuration of the door frame 300 to which the temporary door 1 according to the embodiment of the present invention is connected in a state of being rotatable around a predetermined axis will be described with reference to FIGS.

[0061] As shown in Figure 8, the door frame 300 is mainly composed of a left door frame member 310 extending vertically in the up-down direction on the left side, a right door frame member 320 extending vertically in the up-down direction on the right side, an upper door frame member 330 extending horizontally in the upper left-right direction, and a lower door frame member 340 extending horizontally in the lower left-right direction. The upper door frame member 330 is connected to the left door frame member 310 and the right door frame member 320 at both left and right ends, and the lower door frame member 340 is connected to the left door frame member 310 and the right door frame member 320 at both left and right ends. As a result, a space GW in which the temporary door 1 is accommodated is defined inside these door frame members. The left door frame member 310, the right door frame member 320, the upper door frame member 330, and the lower door frame member 340 are each formed from a rectangular cylindrical hollow member made of carbon steel, for example.

[0062] As described above, the left door frame member 310 and the right door frame member 320 are provided with clamps CL for detachably fixing them to the left support pillar 511 and the right support pillar 512 which are part of the temporary structure 500.

[0063] At the right end of the upper and lower surfaces of the upper door frame member 330, there are provided holes into which the shafts of the hinges HA are inserted. Specifically, two pairs of communication holes (communication holes D330A, D330B) each consisting of a pair of through-holes that penetrate the upper and lower surfaces of the member and are positioned to communicate with each other are provided at predetermined positions. The communication holes D330A, D330B are formed as parallel holes spaced a predetermined horizontal distance apart, for example, the same as the horizontal distance between the communication holes D23A, D23B. At the right end of the front and rear surfaces of the lower door frame member 340, there is provided a pair of communication holes (communication hole D340) into which the shafts of the hinges HB are inserted. Specifically, the pair of communication holes (communication hole D340) each consisting of a pair of through-holes that penetrate the upper and lower surfaces of the member and are positioned to communicate with each other are provided at predetermined positions. For example, the communication hole D340 is positioned so as to be aligned in a vertical line with the communication hole D330A, and is also arranged at a position offset left and right from the communication hole D330B (in this embodiment, it is arranged at a position offset to the right from the communication hole D330B).

[0064] A temporary placement member 350 is provided at approximately the center in the left-right width direction of upper door frame member 330. Door frame 300 is temporarily placed on cross member 520, which is part of temporary structure 500, through this temporary placement member 350, and then fixed to temporary structure 500 in the manner described above.

[0065] As shown in Figure 9, the temporary placement member 350 is mainly composed of a connecting portion 351 that connects to the upper door frame member 330, a placement portion 352 that abuts against the upper portion 520a of the cross member 520 and is placed on the upper portion 520a, and a rod-shaped portion 353 that is connected to the connecting portion 351 and supports the placement portion 352 while guiding it in the vertical direction.

[0066] The connecting portion 351 is formed, for example, by bending a thin carbon steel plate into a generally U-shape in side view. It has two opposing vertical surfaces and a horizontal surface connecting them. Openings are formed at longitudinal ends parallel to each of the surfaces and at the opposing portion to the horizontal surface. The space surrounded by these three surfaces has a shape complementary to the vertical cross section of the upper door frame member 330 in the XZ plane, and the upper end of the member is inserted through the openings. As a result, the inner surfaces of the two vertical surfaces abut against the front and back surfaces of the upper door frame member 330, respectively, and the inner surface of the horizontal surface abuts against the top surface of the upper door frame member 330. The two vertical surface portions each have a through-hole that communicates in the front-to-rear direction, and temporary placement member 350 is fixed to upper door frame member 330 by tightening nuts on bolts that are inserted through these through-holes and through-holes that open at predetermined positions in the left-to-right width direction of upper door frame member 330, for example, at positions that intersect with a vertical line passing through the center of gravity of door frame 300. In addition, a rod-shaped portion 353 that extends vertically in the up-down direction is joined to the outer surface of the horizontal surface portion by, for example, welding.

[0067] The support portion 352 is made of, for example, carbon steel and is composed of a cylindrical portion 352A into which the rod-shaped portion 353 is inserted and a thin horizontal surface portion 352B that extends horizontally behind the cylindrical portion 352A. A screw hole is opened in the cylindrical portion 352A, and the support portion 352 is fixed to the rod-shaped portion 353 by the axial force of a screw or bolt B352 that is threaded into the screw hole. The horizontal surface portion 352B is joined to the cylindrical portion 352A by, for example, welding, and has a bent portion at its rear end that slopes downward. This bent portion is provided to prevent it from falling off, and its angle of inclination and length can be changed as appropriate to suit the shape of the cross member 520, etc. The lower surface 352Ba of the horizontal surface portion 352B that abuts against the upper portion 520a of the cross member 520 is formed, for example, as a horizontal, smooth surface, but the surface may be grooved or surface-treated to function as an anti-slip surface, or may have a shape complementary to the shape of the upper portion 520a.

[0068] The rod-shaped portion 353 is a cylindrical member made of, for example, carbon steel, and is joined by, for example, welding to the outer surface of the horizontal surface portion of the connecting portion 351, as described above. As a result, the rod-shaped portion 353 is fixed to the upper door frame member 330 via the connecting portion 351 and is formed as a portion that extends vertically in the up-down direction. When the cylindrical portion 352A of the mounting portion 352 is inserted into the rod-shaped portion 353, the mounting portion 352 is guided in the up-down direction and supported so that its vertical position (height) can be freely adjusted. Furthermore, the mounting portion 352 is fixed at a predetermined vertical position (height) via the rod-shaped portion 353 using the method described above.

[0069] The provision of the temporary placement member 350 having the above-described configuration facilitates the work of connecting the door frame 300, which is essential for installing the temporary door 1 at the entrance of the temporary structure 500. Specifically, when attaching the door frame 300 to a component constituting a part of the temporary structure, such as the left support pillar 511 and the right support pillar 512, using the clamps CL, the door frame 300 must be temporarily stationary in a predetermined position. Here, it is not easy for even an adult male to manually keep the door frame 300, which is made of steel (carbon steel) and is relatively heavy, stationary. However, in the door frame 300 provided with the temporary placement member 350, the placement portion 352 of the temporary placement member 350 is temporarily placed by placing the placement portion 352 on the cross member 520. More specifically, the placement is performed by placing the lower surface 352Ba of the horizontal surface portion 352B of the placement portion 352 in contact with the upper portion 520a of the cross member 520. This allows the door frame 300 to be stationary in a predetermined position without using human power. At this time, the vertical position (height) of the door frame 300 relative to the cross member 520 can be adjusted by the placing portion 352 that is supported by the rod-shaped portion 353 so as to be guided in the vertical direction. This position adjustment may be performed in advance before temporary placement, or may be adjusted by matching the actual object after temporary placement. Furthermore, the door frame 300 to which the temporary door 1 has been connected in advance via the hinges HA and HB may be temporarily placed according to the above procedure and then fixed to the temporary structure 500 using the clamps CL, or the door frame 300 temporarily placed according to the above procedure may be fixed to the temporary structure 500 using the clamps CL, and then the temporary door 1 may be connected to the door frame 300.

[0070] [Connection between temporary door 1 and door frame 300] Next, the connection between the temporary door 1 and the door frame 300 via the hinges HA and HB will be explained with reference to Figs.

[0071] The hinges HA and HB are connecting elements of the same form, and as shown in Figures 10(a) and (b), are fixed upside down to the top right and bottom end parts of the frame member 20 of the temporary door 1, more specifically, to the right end part of the upper frame member 23 and the right end part of the lower frame member 24 that make up the frame member 20, for example, by bolts and nuts. The hinges HA and HB are made up of shaft parts HA10 and HB10 and connecting parts HA20 and HB20, respectively.

[0072] The shafts HA10, HB10, which have an axis C along the up-down direction (vertical direction), are columnar portions that are inserted into the communication holes D330A, D330B that open in the upper door frame member 330 and the communication hole D340 that opens in the lower door frame member 340, as shown in Figures 12 to 14, and are made of, for example, a round bar member made of carbon steel. The axis C of the shafts HA10, HB10 forms the rotation axis of the temporary door 1 in one example of a connection form between the temporary door 1 and the door frame 300 (for example, a first connection form that will be described later).

[0073] The connecting portions HA20, HB20 are formed, for example, by bending a thin plate-like member made of carbon steel into a roughly U-shape in side view. They have two opposing vertical surfaces and a horizontal surface connecting them. Openings are formed at the longitudinal ends parallel to each surface and at the opposing portions of the horizontal surface. The space surrounded by these three surfaces has a shape complementary to the vertical cross sections in the XZ plane of the upper end of the upper frame member 23 and the lower end of the lower frame member 24 that constitute the frame member 20 of the temporary door 1, and these portions of these members are inserted through the openings. As a result, the inner surfaces of the two vertical surfaces abut against the front and back surfaces of the upper frame member 23 and the lower frame member 24, respectively, and the inner surfaces of the horizontal surface abut against the upper surface of the upper frame member 23 and the lower surface of the lower frame member 24, respectively. Furthermore, shaft portions HA10, HB10 are joined by welding or the like to the outer surfaces of the horizontal surfaces of the connecting portions HA20, HB20 so as to extend vertically. The position in the horizontal plane (XY plane) where these axis portions HA10 and HB10 are joined is preferably a position where their respective axis centers C become concentric when the hinges HA and HB are fixed to the door body 10 upside down, i.e., the center (on the line that bisects the hinges HA and HB in the front-to-back direction) in the thickness direction of the door body 10 to which they are fixed.

[0074] Furthermore, a through hole is opened in each of the two vertical surfaces of each of the connecting portions HA20, HB20, and these two through holes communicate with each other to form a communication hole. By tightening nuts on bolts inserted into these communication holes, communication holes D23A, D23B opening in the upper frame member 23, and communication hole D24 opening in the lower frame member 24, the hinges HA, HB are fixed at predetermined positions on the upper frame member 23 and the lower frame member 24, respectively. 10(a) by tightening a nut on a through-bolt at a position where the communication hole opening into connecting portion HA20 communicates with communication hole D23A opening into the upper frame member 23 (hereinafter, this fixed position will be referred to as the "first fixed position"), and the hinge HA is fixed at the position shown in Fig. 10(b) by tightening a nut on a through-bolt at a position where the communication hole opening into connecting portion HA20 communicates with communication hole D23B opening into the upper frame member 23 (hereinafter, this fixed position will be referred to as the "second fixed position"). Furthermore, the hinge HB is fixed at the positions shown in Figs. 10(a) and 10(b) by tightening a nut on a through-bolt at a position where the communication hole opening into connecting portion HB20 communicates with communication hole D24 opening into the lower frame member 24.

[0075] Fig. 12 shows the connection form between the temporary door 1 and the door frame 300 when the hinge HA is in the first fixed position (hereinafter, this connection form will be referred to as the "first connection form"). When in the first connection form, the shaft portion HA10 of the hinge HA is inserted into the communication hole D330A opening in the upper door frame member 330, and the shaft portion HB10 of the hinge HB is inserted into the communication hole D340 opening in the lower door frame member 340. Also, Fig. 13 shows the connection form between the temporary door 1 and the door frame 300 when the hinge HA is in the second fixed position (hereinafter, this connection form will be referred to as the "second connection form"). When in the second connection form, the axis portion HA10 of the hinge HA is inserted into the communication hole D330B opening into the upper door frame member 330, and the axis portion HB10 of the hinge HB is inserted into the communication hole D340 opening into the lower door frame member 340.

[0076] Here, in the first connecting form in which the hinges HA and HB are fixed through the communication holes D23A and D24 arranged in a vertical line (positions in which they are not offset from each other in the left-right direction), the axis C of the hinge HA and the axis C of the hinge HB are both at the same position (both separated by the distance D1) from the right end of the door frame 300. In other words, the hinges HA and HB are concentric. As a result, the temporary door 1 in the first connecting form is able to rotate freely around the axis C relative to the door frame 300.

[0077] In the second connection form in which the hinges HA and HB are fixed through the communication holes D23B and the communication hole D24 which are arranged at positions offset from each other in the left - right direction, the axis C of the hinge HA (more specifically, the axis C of the shaft portion HA10) is at a position separated by a distance D2 from the right end of the door frame 300, and the axis C of the hinge HB (more specifically, the axis C of the shaft portion HB10) is at a position separated by a distance D1 (D1 < D2) from the right end of the door frame 300. That is, the axis C of the hinge HA and the axis C of the hinge HB are eccentric. As a result, when the temporary door 1 is in the second connection form, it rotates around an axis that is displaced from the axes C of the hinge HA and the hinge HB with respect to the door frame 300. Due to the displacement of this rotation axis, when a predetermined force is applied to open the temporary door 1 from the static closed state shown in FIG. 13, a force (the reaction force of the above - mentioned predetermined force) that tries to return to the original closed state acts on the temporary door 1. Thereby, the temporary door 1 can be configured to always be stationary in the closed state, and forgetting to close the temporary door 1 can be prevented. In the second connection form, in order to suppress the above - mentioned predetermined force to a size that does not cause practical problems, it is preferable that the shaft portions HA10 and HB10 of the hinges HA and HB are configured to be able to rotate with a certain degree of inclination. For example, the fitting tolerance of the shaft diameters of the pair of through - holes constituting the communication holes D330A, D330B, D340 and the shaft portions HA10, HB10 inserted therein is set to a value larger than normal. Also, in the communication holes D330A and D330B, the opening diameter of the through - hole opening on the upper surface of the upper door frame member 330 is larger than that of the through - hole opening on the lower surface, and in the communication hole D340, the opening diameter of the through - hole opening on the lower surface of the lower door frame member 340 is larger than that of the through - hole opening on the upper surface, and each value may be set in this way.

[0078] 〔Connection method between the temporary door 1 and the door frame 300〕 Finally, the connection method between the temporary door 1 and the door frame 300 will be described based on FIGS. 14(a) and (b). Here, FIG. 14(a) shows the working procedure of the first connection form, and FIG. 14(b) shows the working procedure of the second connection form. Note that both the temporary door 1 and the door frame 300 are in a state of standing vertically in these figures, but they may also be in a state of lying horizontally.

[0079] In a first operation, an operator installs the hinges HA and HB in predetermined positions in the door frame 300. That is, in the first connection mode, the shaft HA10 of the hinge HA is inserted into the communication hole D330A opening in the upper door frame member 330, and the shaft HB10 of the hinge HB is inserted into the communication hole D340 opening in the lower door frame member 340. In the second connection mode, the shaft HA10 of the hinge HA is inserted into the communication hole D330B opening in the upper door frame member 330, and the shaft HB10 of the hinge HB is inserted into the communication hole D340 opening in the lower door frame member 340. After the above operation, the hinges HA and HB are positioned such that the longitudinal directions of the connecting portions HA20 and HB20 are both horizontal and the openings formed in the connecting portions HA20 and HB20 face each other. The orientation of the hinges HA and HB in the XY plane should be set so that the longitudinal directions of the connecting portions HA20 and HB20 face in the same direction.

[0080] As a second operation following the first operation, the temporary door 1 is inserted into the hinges HA and HB. Specifically, the temporary door 1 is inserted by sliding it horizontally into the openings formed in the connecting portions HA20 and HB20 of the hinges HA and HB. Here, to facilitate the second operation, in the first connecting configuration, it is preferable to set the orientation of the hinges HA and HB so that the longitudinal directions of the connecting portions HA20 and HB20 are both approximately perpendicular to the width direction of the door frame 300. This avoids interference between the temporary door 1 and the door frame 300, enabling a smooth insertion operation. Furthermore, in the second connecting configuration in which the positions of the hinges HA and HB are offset, it is preferable to set the orientation of the hinges HA and HB so that the longitudinal directions of the connecting portions HA20 and HB20 and the width direction of the door frame 300 are as nearly parallel as possible. This minimizes the offset of the hinges HA and HB when inserting the temporary door 1, enabling a smooth insertion operation.

[0081] As a third operation following the second operation, the hinges HA and HB are fixed to the temporary door 1 using bolts B and nuts N. That is, in the first connecting form, the communication hole opening into the connecting portion HA20 of the hinge HA is aligned with the communication hole D23A opening into the upper frame member 23 of the temporary door 1, and then the bolt B is inserted into these holes and tightened with the nut N. Also, the communication hole opening into the connecting portion HB20 of the hinge HB is aligned with the communication hole D24 opening into the bottom frame member 24 of the temporary door 1, and then the bolt B is inserted into these holes and tightened with the nut N. Also, in the second connecting form, the communication hole opening into the connecting portion HA20 of the hinge HA is aligned with the communication hole D23B opening into the upper frame member 23 of the temporary door 1, and then the bolt B is inserted into these holes and tightened with the nut N. Furthermore, after aligning the communication hole opening into the connecting portion HB20 of the hinge HB with the communication hole D24 opening into the bottom frame member 24 of the temporary door 1, the bolt B is inserted into these holes and tightened with the nut N.

[0082] By the above-mentioned work procedure, the temporary door 1 is connected to the door frame 300 so as to be rotatable around a predetermined axis. Note that the connected state between the temporary door 1 and the door frame 300 can be released by going through the reverse of the above-mentioned work procedure.

[0083] [Effects of this embodiment] According to the temporary door 1 configured as described above, the door body 10 and the door closer 100 can be freely connected and disconnected. Therefore, when the temporary door 1 is attached to the temporary structure 500, the door body 10 and the door closer 100 are connected to form the temporary door 1. At other times, the temporary door 1 can be configured as a roughly flat door body 10 separated from the door closer 100, whose knob 120 protrudes from the surface of the door body 10. This allows for the storage of individual temporary doors 1, for example, to stack the door bodies 10, which still have a large volume even after the door closer 100 is removed, in a stable position, while the smaller door closers 100 can be stored individually. This prevents the stacked temporary doors 1 from accidentally collapsing. Furthermore, it becomes possible to efficiently store a large number of temporary doors 1 in a small space.

[0084] Furthermore, by making the coupling / separation mechanism 200 a simple structure consisting of only the switching member 210, the elastic member 220, and the support member 230, it is possible to configure a mechanism that is inexpensive and has excellent durability. This effect is particularly useful in the special environment of a construction site.

[0085] Furthermore, since the door body 10 and the door closer 100 can be connected and disconnected by simple operation using the operating member CP without disassembling each component, the temporary door 1 can be installed or removed efficiently at construction sites etc. in a short time with little manpower.

[0086] Furthermore, by requiring an operating member CP to separate the door body 10 and the door closer 100, and by providing an opening for this operation inside the work site, it is possible to prevent a third party from easily separating them (by mischief).

[0087] Furthermore, the first cross bar member 31 and the second cross bar member 32, which function as guide rails, are provided on the side of the door body 10, and the first recess H1 and the second recess H2, which function as guided portions by engaging with these, are provided on the side of the door closer 100, thereby enabling smooth and reliable connection and separation operations.

[0088] Furthermore, as described above, by providing the temporary placement member 350 to the door frame 300, the door frame 300 can be attached (fixed) to the temporary structure 500 efficiently in a short time with little manpower.

[0089] Furthermore, by providing the above-mentioned structure for connecting the temporary door 1 and the door frame 300, it becomes possible to selectively set two different connection forms, namely, a connection form in which the axis C of the hinge HA and the axis C of the hinge HB are on the same straight line (a connection form in which the hinges HA and HB are concentric), and a connection form in which the axis C of the hinge HA and the axis C of the hinge HB are not on the same straight line (a connection form in which the hinges HA and HB are eccentric).

[0090] The above describes a preferred embodiment of the present invention, specifically the temporary door 1 and the door frame 300 to which it is connected. However, the present invention is not limited to this embodiment, and various modifications are possible within the scope of the gist of the present invention. Furthermore, even configurations not directly described in the specification and drawings are within the scope of the technical concept of the present invention as long as they achieve the functions and effects of the present invention. Furthermore, the embodiments described above and shown in the drawings can be combined with each other as long as there is no contradiction in their purpose, configuration, etc.

[0091] [Variation 1] For example, in the above embodiment, the temporary door 1 is equipped with the connection / separation mechanism 200, and the door frame 300 is provided with the temporary placement member 350, and further equipped with a connection mechanism that allows the temporary door 1 and the door frame 300 to be connected in two different forms simply by changing the fixing position of the hinge HA, but these connection / separation mechanisms, temporary placement members and connection mechanisms can be established independently. Therefore, a temporary door device may be made up of a door main body, a door frame, or a door main body and a door frame, which are equipped with at least one of the connection / separation mechanism, temporary placement member and connection mechanism.

[0092] [Variation 2] 15, the door main body 10-2 and the knob 120-2 integrated with the door closer may be configured to be connected and separated. In the temporary door 1-2 according to this modification, the connection and separation mechanism 200-2 is made up of, for example, a push button 210-2 arranged on the knob 120-2, a claw portion 220-2 that moves up and down in conjunction with the pushing operation of the push button 210-2, an elastic member (not shown) that imparts an elastic force to the claw portion 220-2, and a recess 230-2 arranged on the door closer that engages with the claw portion 220-2. When the push button 210-2 is in an inoperative state (not pressed), the claw portion 220-2 engages with the claw portion 220-2 with an elastic force, thereby connecting the door main body 10-2 and the knob 120-2. On the other hand, when the push button 210-2 is in an operating state (a pressed state), the claw portion 220-2 moves, for example, downward while resisting the elastic force, thereby disengaging from the claw portion 220-2 and separating the door main body 10-2 and the knob 120-2. The temporary door 1-2 according to this modification also brings about the same effects as the temporary door 1 according to the present embodiment.

[0093] [Variation 3] Furthermore, the connection mode of the temporary door 1 and the door frame 300 may be changed to the modes shown in Figures 16 to 20. This modified example differs from the temporary door 1 and door frame 300 according to the present embodiment in that hinges HA-3 and HB-3 are fixed to the door frame 300-3, and the shafts HA10-3 and HB10-3 of the hinges HA-3 and HB-3 are inserted into holes opening in the temporary door 1-3. In relation to this difference, the shapes of the upper and lower frame members of the temporary door, the shapes of the upper and lower door frame members of the door frame, and the shapes of the hinges HA-3 and HB-3 are all different.

[0094] That is, in the door frame 300-3 relating to this modified example, as shown in Figures 16(a) and (b), holes for fixing the hinge HA-3 are provided at the right end of the upper door frame member 330-3. Specifically, communicating holes D330Aa-3 and D330Ba-3 are formed by a pair of holes that connect through the front and rear surfaces of the member, and these holes open at a predetermined interval in the horizontal direction. Also, at the right end of the upper door frame member 330-3, holes into which the axis portion HA10-3 of the hinge HA-3 is inserted are provided. Specifically, communicating holes D330Ab-3 and D330Bb-3 are formed by a pair of holes that connect through the top and bottom surfaces of the member, and these holes open at the same interval in the horizontal direction as the predetermined interval. The right end of the lower door frame member 340-3 is provided with a hole for fixing the hinge HB-3. Specifically, the hole D340a-3 is formed by a pair of holes that connect through the front and rear surfaces of the member, and a hole into which the shaft HB10-3 of the hinge HB-3 is inserted. Specifically, the hole D340b-3 is formed by a pair of holes that connect through the top and bottom surfaces of the member. The hole D340a-3 is aligned vertically with the hole D330Aa-3, and is offset left and right from the hole D330Ba-3 (in this modification, it is offset to the right from the hole D330Ba-3). Each hole is formed by a pair of holes that connect through two opposing surfaces (the front and rear surfaces / the top and bottom surfaces) and are in communication with each other.

[0095] Furthermore, in the upper frame member 23-3 of the temporary door 1-3 according to this modification, as shown in Fig. 17, through holes D23A-3 and D23B-3 into which the shaft portion HA10-3 of the hinge HA-3 is inserted are opened at the right end of the upper surface of the upper frame member 23-3. Furthermore, a through hole D24-3 into which the shaft portion HB10-3 of the hinge HB-3 is inserted is opened at the right end of the lower surface of the lower frame member 24-3. The through holes D23A-3 and D23B-3 are disposed at the same horizontal interval as the interval between the communication holes D330Aa-3 and D330Ba-3.

[0096] Furthermore, hinges HA-3 and HB-3 according to this modification are each composed of axial portions HA10-3 and HB10-3 and connecting portions HA20-3 and HB20-3. These hinges HA-3 and HB-3 differ from the hinges HA and HB according to the above-described embodiment in that the axial lengths of axial portions HA10-3 and HB10-3 are longer than those of axial portions HA10 and HB10, and the connecting portions HA20-3 and HB20-3 and axial portions HA10-3 and HB10-3 are joined on the inner surface rather than the outer surface of the horizontal plane, but otherwise the configuration is the same.

[0097] 18 and 19, hinge HA-3 is fixed using a through bolt B and a nut N at a position where the communication hole opening in connecting portion HA20-3 communicates with communication hole D330Aa-3 opening in upper door frame member 330-3 (first fixing position), or is fixed in a similar manner at a position where communication hole D330Ba-3 communicates with it (second fixing position). Hinge HB-3 is also fixed using a through bolt B and a nut N at a position where the communication hole opening in connecting portion HB20-3 communicates with communication hole D340a-3 opening in lower door frame member 340-3. When the hinge HA-3 is in the first fixed position, its axis HA10-3 is inserted into the communication hole D330Ab-3 that opens in the upper door frame member 330-3, and when the hinge HA-3 is in the second fixed position, its axis HA10-3 is inserted into the communication hole D330Bb-3.Furthermore, the hinge HB-3 has its axis HA10-3 inserted into the communication hole D340b-3 that opens in the lower door frame member 340-3.

[0098] Furthermore, when the hinge HA-3 is in the first fixed position, its axis portion HA10-3 is inserted into the through-hole D23A-3 that opens into the upper frame member 23-3 of the temporary door 1-3, and when it is in the second fixed position, its axis portion HA10-3 is inserted into the through-hole D23B-3 that opens into the upper frame member 23-3. Also, the hinge HB-3 has its axis portion HA10-3 inserted into the through-hole D24-3 that opens into the lower frame member 24-3 of the temporary door 1-3.

[0099] When the hinge HA-3 is in the first fixed position, the temporary door 1-3 and the door frame 300-3 are connected in a concentric state in which the axis C of the hinge HA-3 (more specifically, the axis C of the axis portion HA10-3) and the axis C of the hinge HB-3 (more specifically, the axis C of the axis portion HB10-3) are arranged on the same straight line (first connection form). As a result, the temporary door 1-3 and the door frame 300-3 are connected so as to be rotatable around the axis C (see Figure 18).

[0100] On the other hand, when the hinge HA-3 is in the second fixed position, the temporary door 1-3 and the door frame 300-3 are connected in an eccentric state where the axis C of the hinge HA-3 (more specifically, the axis C of the axis portion HA10-3) and the axis C of the hinge HB-3 (more specifically, the axis C of the axis portion HB10-3) are offset (second connection form). As a result, the temporary door 1-3 and the door frame 300-3 rotate around an axis that is offset from the axis C (see Figure 19).

[0101] The connection of the temporary door 1-3 and the door frame 300-3 is performed in accordance with the work procedure shown in Fig. 20. That is, after the worker places the temporary door 1-3 within the frame of the door frame 300-3, the worker installs the hinges HA-3 and HB-3 in predetermined positions on the door frame 300-3. That is, in the first connection form shown in Fig. 12(a), the shaft portion HA10-3 of the hinge HA-3 is inserted into the communication hole D330Ab-3 opening in the upper door frame member 330-3, and the shaft portion HB10-3 of the hinge HB-3 is inserted into the communication hole D340b-3 opening in the lower door frame member 340-3. In addition, in the second connection form shown in Figure 12(b), the shaft portion HA10-3 of the hinge HA-3 is inserted into the communication hole D330Bb opening into the upper door frame member 330-3, and the shaft portion HB10-3 of the hinge HB-3 is inserted into the communication hole D340b-3 opening into the lower door frame member 340-3.

[0102] Here, the hinge HA-3 is pushed down to a position where the inner surface of the horizontal plane of the connecting part HA20-3 abuts against the top surface of the upper door frame member 330-3, and the hinge HB10-3 is pushed up to a position where the inner surface of the horizontal plane of the connecting part HB20-3 abuts against the bottom surface of the lower door frame member 340-3. Then, in the first connection form, the shaft part HA10-3 of the hinge HA-3 is inserted into the through-hole D23A-3 that opens into the top surface of the upper frame member 23-3 of the temporary door 1-3, and the shaft part HB10-3 of the hinge HB-3 is inserted into the through-hole D24-3 that opens into the bottom surface of the lower frame member 24-3 of the temporary door 1-3. In the second connection form, the shaft portion HA10-3 of the hinge HA-3 is inserted into the through hole D23B-3 opening into the upper surface of the upper frame member 23-3 of the temporary door 1-3, and the shaft portion HB10-3 of the hinge HB-3 is inserted into the through hole D24-3 opening into the lower surface of the lower frame member 24-3 of the temporary door 1-3.

[0103] In the above state, in the first connection configuration, the communication hole opening in the connecting portion HA20-3 is positioned to communicate with the communication hole D330Aa-3 opening in the upper door frame member 330-3 of the door frame 300-3, and the communication hole opening in the connecting portion HB20-3 is positioned to communicate with the communication hole D340a-3 opening in the lower door frame member 340-3. By inserting a bolt B through these holes and tightening it with a nut N, the hinges HA-3 and HB-3 are fixed to the door frame 300-3 (upper door frame member 330-3) in the first fixed position. Furthermore, in the second connection form, the communication hole opening into the connecting portion HA20-3 is arranged at a position communicating with the communication hole D330Ba-3 opening into the upper door frame member 330-3 of the door frame 300-3, and the communication hole opening into the connecting portion HB20-3 is arranged at a position communicating with the communication hole D340a-3 opening into the lower door frame member 340-3. By inserting a bolt B into these holes and tightening it with a nut N, the hinges HA-3 and HB-3 are fixed to the second fixed position of the door frame 300-3 (upper door frame member 330-3). Through the above procedure, the temporary door 1-3 and the door frame 300-3 are connected to each other so as to be able to rotate freely.

[0104] [Variation 4] Furthermore, with regard to the form of the coupling / separation mechanism 200 provided in the temporary door 1, two coupling / separation mechanisms 200 disposed symmetrically above and below may be disposed on either side, but only one may be disposed on either side. Furthermore, the form of the switching member 210 may be different. For example, it may be an L-shaped switching member with only one of the arm portions 211, 212, or the upper end portions 211a, 212a of the arm portions 211, 212 may be switching members with inclined surfaces. As an example of the latter, when connecting the door closer 100 and the door main body 10 in a separated state, the upper end portions 211a, 212a are formed with surfaces that are inclined toward the direction in which the door closer 100 is slid relative to the door main body 10. This converts the horizontal force (sliding direction) applied during the sliding operation into a vertical force, making it possible to smoothly perform the connecting work without using an operating member.

[0105] [Variation 5] Furthermore, the elements that make up the coupling / separation mechanism 200 may be configured to be housed inside the door main body 10 rather than inside the door closer 100, or may be configured to be housed so as to straddle the door main body 10 and the door closer 100. In connection with this, an opening for inserting the operating member CP may be provided on the rear surface of the door main body 10, etc.

[0106] [Variation 6] Furthermore, in this embodiment, the guided parts arranged on the door closer 100 are guided by the members (first horizontal rail member 31 and second horizontal rail member 32) that function as guide rails arranged on the door main body 10, while sliding against each other to couple or separate, but this may also be configured so that the door closer 100 is coupled by fitting it in the front and rear directions into a predetermined part of the door main body 10, for example, a predetermined position on the front face (front surface). The configuration of the coupling and separation mechanism in this case may be the same as that of this embodiment, or may be configured differently.

[0107] [Variation 7] Furthermore, with regard to the configuration of the portion that allows the door main body 10 and the door closer 100 to slide relative to each other when switching between connection and disconnection, in the above-described embodiment, two pairs of portions functioning as guide rails (the lower end of the first horizontal bar member 31 and the upper end of the second horizontal bar member 32 formed on the door main body 10) and portions functioning as guided portions (the first recessed portion H1 and the second recessed portion H2 formed on the door closer 100) are provided, one above the other. However, they may be provided as a single pair. For example, a pair may be provided at the bottom (the upper end of the second horizontal bar member 32 and the second recessed portion H2), or a pair may be provided at the top, one of which guides the other while suspending it. As an example of a suspending configuration, a concave groove extending along the sliding direction may be formed as a guide rail on at least one of the front end face 31a and the rear end face 31b of the lower end of the first horizontal bar member 31, and a convex portion that engages with the groove and is suspended from the groove may be formed as a guided portion at the top end of the door closer. In this configuration, the top and bottom of the door closer 100 are asymmetrical, so that incorrect assembly in which the top and bottom and front and back of the door closer 100 are reversed can be prevented.

[0108] [Variation 8] Furthermore, temporary placement members 350 may be provided at multiple locations on the upper door frame member 330. For example, two temporary placement members 350 may be provided in place of or in addition to the temporary placement member 350 according to the above embodiment, at positions that are symmetrical with respect to a vertical line extending in the up-down direction, such as a plumb line passing through the center of gravity of the door frame 300. This allows for stable temporary placement.

[0109] [Modification 9] 13, i.e., a connection form in which the hinge HA fixed to the upper frame member 23 is offset relatively to the left from the hinge HB fixed to the lower frame member 24, may be configured by inverting it upside down. For example, two communication holes for fixing the hinge HB are provided, and two communication holes for inserting the shaft portion HB10 of the hinge HB are provided in the lower frame member 24 of the lower door frame member 340. In this case, two or only one communication hole for fixing the hinge HA may be provided in the upper frame member 23, as in the temporary door 1. Furthermore, two or only one communication hole for inserting the shaft portion HA10 of the hinge HA may be provided in the upper door frame member 330, as in the temporary door 1.

[0110] [Modification 10] Furthermore, with regard to the connection mechanism that makes it possible to switch the connection form between the temporary door 1 and the door frame 300 between a first connection form and a second connection form, at least one of the two communication holes (for example, two through holes D23A, D23B that open in the upper frame member 23 of the door main body 10) that open to fix at least one of the hinges HA and HB at two different positions, and the two communication holes (for example, two through holes D330A, D330B that open in the upper door frame member 330 of the door frame 300) that open to insert the shaft portions of the hinges fixed at two positions may be replaced with a form formed from a single elongated hole. In this case, a positioning member may be provided in addition to fix (stationary) the hinge at two different positions and to allow the shaft portions of the hinges at each fixed (stationary) position to function as a pivot axis of the temporary door, etc. Here, the bolts B and nuts N for fixing the connecting parts HA of the hinges HA of the temporary door 1 can be used as positioning members to be installed alongside the elongated holes for fixing the hinges. Furthermore, the positioning members to be installed alongside the elongated holes for fixing the hinges and the elongated holes for inserting the shaft parts of the hinges may be configured to include, for example, a feed mechanism (feed screw) that moves in the width direction of the temporary door and the door frame, or may be configured to detachably attach a partition member for defining two fixed (stationary) positions and two insertion positions within the elongated holes. Furthermore, a mechanism configured to perform positioning using an elastic member or a ratchet may also be used.

[0111] [Modification 11] Furthermore, the same type of hinges HA and HB may be configured as two hinges of different types, for example, two hinges in which the connecting portion and the shaft portion are connected at different positions in the horizontal plane (XY plane). The direction of the shift in the connection position is not limited to the left-right width direction and may be any direction. However, for at least one of the two hinges of different types, it is desirable that the connection position be in the center (on the line dividing the hinge in half in the front-to-rear direction) in the front-to-rear direction (the thickness direction of the door body 10 to which it is fixed) so that the axes are concentric when the hinge is turned upside down. In this modification, by changing the combination of the two hinges fixed as a pair above and below, it is possible to connect the temporary door 1 and the door frame 300 in two different types (a type in which the axes of the two hinges fixed above and below are concentric and a type in which they are eccentric). In this case, there is no need to provide multiple communication holes (for example, communication holes D23A and D23B opening in the upper frame member 23) to change the fixing position of the hinge. [Explanation of symbols]

[0112] 1, 1-2, 1-3...Temporary door, 10, 10-2...Door body, 20...Frame member, 21A...First left vertical frame member, 21B...Second left vertical frame member, 21C...Third left vertical frame member, 22...Right vertical frame member, 23, 23-3...Upper frame member, D23A, D23B, D23A-3, D23B-3...Communicating hole, 24, 24-3...Lower frame member, D24, D24-3...Communicating hole, 30...Reinforcing member, 31...First horizontal beam member, 31a...Front end face, 31b...Rear end face, 31c...Bottom surface, D31a, D31b...Through hole, 32...Second horizontal beam member, 32 a...front end surface, 32b...rear end surface, 32c...top surface, D32a, D32b...through hole, 40...plate-shaped member, 100...door closer, 110...casing, 111...front surface, 111a...rear surface, 112...rear surface, 112a...rear surface, D112a...opening, D112b...opening, 113...left side surface, 114...right side surface, 115...top surface, D115a, D115b...through hole, 116...bottom surface, D116a, D116b...through hole, 120, 120-2...knob, 130...latch, 140...locking device, 200, 200-2...connection Separation mechanism, 210...switching member, 211, 212...arm portion, 211a, 212a...upper end portion, 213...horizontal portion, 220...elastic member, 221...first elastic member, 222...second elastic member, 230...support member, 300, 300-3...door frame, 310...left door frame member, 320...right door frame member, 330, 330-3...upper door frame member, D330A, D330B, D330Aa-3, D330Ba-3, D330Ab-3, D330Bb-3...communicating hole, 340, 340-3...lower door frame member, D340, D340 a-3, D340b-3...communicating hole, 350...temporary placement member, 351...connecting portion, 352...placing portion, 352A...cylindrical portion, 352B...horizontal surface portion, 353...rod-shaped portion, 500...temporary structure, 511...left support column, 512...right support column, 520...cross member, SR1, SR2...snap ring, H1, H2...recess, HA, HA-3, HB, HB-3...hinge, HA10, HA10-3, HB10, HB10-3...axis portion, HA20, HA20-3, HB20, HB20-3...connecting portion, CL...clamp, CP...operating member.

Claims

1. A temporary door that is installed at the entrance of a temporary structure in a state in which a door body is connected to a door closer that includes a knob that protrudes from the surface of the door body and a latch that appears and disappears on the surface in conjunction with the rotational movement of the knob, A connection / separation mechanism is provided between the door closer and the door body, which enables the door closer and the door body to be connected to each other and separated from each other, the coupling / separation mechanism includes a switching member that switches between the coupled state and the separated state, The switching member is configured to move between a first position corresponding to the connected state and a second position corresponding to the separated state while being held inside at least one of the door closer and the door body, The door body and the door closer have a pair of opposing surfaces that move relative to each other, the switching member includes a plurality of arms and a connecting portion that connects the plurality of arms, The plurality of arm portions are configured to restrict relative movement of the pair of opposing surfaces by protruding from at least one of the door main body and the door closer, where the switching member is held, when the switching member is in the first position, A temporary door in which at least one of the door body and the door closer has an opening on the surface from which the knob protrudes for inserting an operating member that engages with the connecting portion to move the switching member.

2. In the temporary door according to claim 1, The switching member is a temporary door having a connecting portion extending in a direction parallel to the opposing surface and a pair of arm portions extending from both ends of the connecting portion in a direction perpendicular to the opposing surface.

3. The temporary door according to claim 1 or 2, the connection / disconnection mechanism further includes an elastic member; The temporary door is configured so that the switching member is maintained in at least one of the connected state and the separated state by the elastic force of the elastic member.

4. The temporary door according to any one of claims 1 to 3, The connection / separation mechanism is provided between the door closer and the door body, At least one of the door closer and the door body is a temporary door equipped with a support member that movably supports the switching member.

5. In the temporary door according to claim 4 which cites claim 3, the switching member is biased by the elastic member in a direction perpendicular to the direction of the relative movement, The operating member is inserted between the support member and the switching member to apply a force to the switching member that is counter to the biasing force of the elastic member, thereby forming a temporary door that is clamped between the support member and the switching member.

6. The temporary door according to claim 5, the door closer includes the opening and the support member, the elastic member is disposed between the switching member and the support member, The door closer is configured to separate from the door body by moving the operating member inserted into the opening along the direction of relative movement.

7. The temporary door according to any one of claims 1 to 6, At least one of the door body and the door closer includes a guide rail, The other is a temporary door having a guided portion that engages with the guide rail and slides relative to it.

8. The temporary door according to claim 7, the guide rail and the guided portion each have a sliding surface facing each other, A temporary door in which at least a pair of holes through which the end of the switching member passes is provided at positions on each of the opposing sliding surfaces where the holes communicate with each other.

9. The temporary door according to any one of claims 1 to 8, The door closer is a temporary door equipped with a locking device.

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