Lock mechanism

Abstract

To provide a lock mechanism which enables reduction of a time for checking a lock state of a door part.SOLUTION: A lock mechanism according to one embodiment of the invention is a lock mechanism of a door part which covers an opening of a storage device having a storage space for storing an electric device. The lock mechanism includes: a first lock part and a second lock part which are provided at the door part and can switch a state of the lock mechanism between a lock state in which the first lock part and the second lock part hinder the door part from turning from a closed state to an open state and an unlock state where the first lock part and the second lock part do not hinder the door part from turning from the closed state to the open state; and a link mechanism configured to restrain the second lock part in the unlock state when the first lock part is in the unlock state and release restraint of the second lock part in the unlock state in conjunction with switching of the first lock part from the lock state to the unlock state.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a locking mechanism for a door portion that covers an opening of a housing device installed under the floor of a railway vehicle and houses various electrical devices.

Background Art

[0002] Conventionally, as a locking mechanism for a housing device installed under the floor of a railway vehicle and housing various electrical devices, for example, Patent Document 1 describes a control device box for a railway vehicle having an opening formed on one side surface, a locking portion formed on a lower portion of the opening, and an inspection cover that covers the opening, wherein the inspection cover has a plurality of claw pieces that are respectively rotated by a plurality of operation levers and locked to the locking portion.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In Patent Document 1, a plurality of operation levers for rotating a plurality of claw pieces are attached to the inspection cover which is a door portion, and conventionally, whether the inspection cover is locked or not has been visually confirmed by an operator. However, since the inspection covers of the housing devices for housing various electrical devices are located in various places, there are many inspection points for visual confirmation, and there is a problem that a lot of working time is required, such as performing double-check to prevent forgetting to close.

[0005] In view of the above circumstances, an object of the present invention is to provide a locking mechanism capable of reducing the time for confirming the locked state of the door portion.

Means for Solving the Problems

[0006] To achieve the above object, a housing device according to one embodiment of the present invention is a lock mechanism for a door portion that covers an opening of a housing device having a housing space for housing an electrical device, and The lock mechanism includes a first lock portion, a second lock portion, and a link mechanism. The first lock portion is provided on the door portion, and can be switched between a locked state that prevents the door portion from changing from the closed state to the open state and an unlocked state that does not prevent the door portion from changing from the closed state to the open state, respectively. The second lock portion is provided on the door portion, and can be switched between a locked state that prevents the door portion from changing from the closed state to the open state and an unlocked state that does not prevent the door portion from changing from the closed state to the open state, respectively. The link mechanism includes a link mechanism configured to restrain the second lock portion in the unlocked state when the first lock portion is in the unlocked state, and to release the restraint of the second lock portion in the unlocked state as the first lock portion is switched from the unlocked state to the locked state.

[0007] The lock mechanism can further lock the door portion by the second lock portion by locking the door portion by the first lock portion through the link mechanism. Thereby, it is possible to confirm whether the first lock portion is locked only by checking the second lock portion. That is, when the second lock portion is locked, the first lock portion is necessarily locked, so that the working time for the operator to confirm the locking of the door portion can be reduced.

[0008] The first lock portion includes a first stopper having a first claw portion that is provided inside the door portion and is movable between a lock position that engages with the opening and an unlock position that does not engage with the opening, and a first operation portion that is provided outside the door portion and receives an operation for moving the first claw portion between the lock position and the unlock position. The second locking portion may include a second stopper having a second claw portion provided inside the door portion and movable between a locked position engaged with the opening and an unlocked position not engaged with the opening, and a second operating portion provided outside the door portion and receiving an operation for moving the second claw portion between the locked position and the unlocked position.

[0009] The link mechanism may include a first link member that rotates in conjunction with the operation of the first operating portion, and a second link member that rotates in conjunction with the operation of the second operating portion. The first link member may have a first engaging portion that allows the rotation of the second link member when the first locking portion is in the locked state and restricts the rotation of the second link member by the first engaging portion when the first locking portion is in the unlocked state.

[0010] The first link member may be circular with a portion along the circumference serving as the first engaging portion, and may have a first notch portion notched on the circumference. The second link member may be circular and may have a second notch portion notched on the circumference. The first link member may allow the rotation of the second link member when the first notch portion faces the second notch portion, and may restrict the rotation of the second link member when the first engaging portion enters the second notch portion.

[0011] The link mechanism may include a third link member having a sliding surface that slides and moves to a position adjacent to the second stopper in conjunction with the operation of the first operating portion. The third link member may have a second engaging portion that allows the rotation of the second stopper when the first locking portion is in the locked state and restricts the rotation of the second stopper by the second engaging portion when the first locking portion is in the unlocked state.

[0012] The third link member is plate-shaped with the slide surface serving as the first engaging portion, and has a third notch portion cut out from the slide surface. The second locking portion is circular and further has a rotating portion with a fourth notch portion cut out on the circumference. The third link member may allow the second link member to rotate when the third notch portion faces the fourth notch portion, and may restrict the rotation of the second link member when the slide surface is adjacent to the fourth notch portion.

[0013] The first stopper has a first protrusion. The second stopper has a second protrusion. The link mechanism has a fourth link member that can slide along the first stopper and the second stopper. The fourth link member has a first hole into which the first protrusion enters when the first locking portion is in the locked state and from which the first protrusion exits when the first locking portion is in the unlocked state, a second hole into which the second protrusion enters when the second locking portion is in the locked state and from which the second protrusion exits when the second locking portion is in the unlocked state, and a restricting portion that restricts the slide movement of the fourth link member when the first protrusion enters the first hole. The fourth link member may be configured such that when the first locking portion is in the unlocked state, the second protrusion is constrained within the second hole by the restriction of the slide movement by the restricting portion, and when the first locking portion is in the locked state, the second protrusion can exit from the second hole while sliding the fourth link member.

[0014] The housing device may be installed under the floor of a railway vehicle.

Advantages of the Invention

[0015] As described above, according to the present invention, the time for confirming the locked state of the door portion can be reduced.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

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Figure 10

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Figure 17

Figure 18

Figure 19

Embodiments for Carrying Out the Invention

[0017] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0018] <First Embodiment> FIG. 1 is a perspective view of the storage device 1 in the first embodiment of the present invention, and FIG. 2 is a side view of the door portion 30 of the present invention. In the following figures, the X-axis, Y-axis, and Z-axis directions are three mutually orthogonal axial directions.

[0019] In the present embodiment, the storage device 1 is installed under the floor (not shown) of a railway vehicle. As shown in FIGS. 1 to 3, the storage device 1 includes a storage portion 10, a door portion 30, and a lock mechanism 100. In the present embodiment, the length of the storage device 1 in the Y-axis direction is approximately 1 m, the length of the storage device 1 in the X-axis direction is approximately 0.7 m, and the length of the storage device 1 in the Z-axis direction is approximately 0.8 m in the shape of a cube, but of course, it is not limited to this.

[0020] In the present embodiment, the traveling direction of the railway vehicle is defined as the Y-axis direction, the vehicle width direction is defined as the X-axis direction, and the vehicle height direction is defined as the Z-axis direction.

[0021] There is a space under the floor (not shown) of the railway vehicle on the positive Z-axis side when viewed from the storage device 1, and the storage device 1 is attached to the floor under it. The storage device 1 is configured to be able to accommodate various electrical devices according to the type and car number of the railway vehicle. Also, in one vehicle, two storage devices 1 can be arranged in the X-axis direction. In the present embodiment, they are arranged in a direction such that the cylindrical portion 50 described later is not exposed, but of course, it is not limited to this.

[0022] [Storage Portion] In this embodiment, as shown in FIG. 1, the housing portion 10 has an upper surface portion 21 parallel to the X-axis direction and the Y-axis direction, a bottom surface portion facing the upper surface portion 21 in the Z-axis direction, a plurality of side surface portions 22 and 23 provided between the upper surface portion 21 and the bottom surface portion and parallel to the X-axis direction and the Z-axis direction, and a front surface portion 24 and a rear surface portion 25 provided between the upper surface portion 21 and the bottom surface portion and parallel to the Y-axis direction and the Z-axis direction, and forms a housing space W for housing the electric device E. In this embodiment, the housing portion 10 is formed of iron, but of course it is not limited to this, and for example, it may be made of stainless steel (SUS), and is not limited to metal, and may be made of resin.

[0023] In this embodiment, the upper surface portion 21 and the bottom surface portion are rectangular in shape with a short side in the X-axis direction and a long side in the Y-axis direction. Of course, it is not limited to this, and it may be rectangular in shape with a long side in the X-axis direction and a short side in the Y-axis direction, or may be square in shape. Also, in this embodiment, the thickness of the upper surface 210 in the Z-axis direction is approximately 1.6 mm and 2.3 mm, but of course it is not limited to this.

[0024] The upper surface portion 21 has suspension fittings 211 to 214 for attaching the housing device 1 under the floor of a railway vehicle on the positive Z-axis side. In this embodiment, the suspension fittings 211 to 214 are provided at the four corners of the rectangular upper surface portion 21 (see FIG. 1).

[0025] The plurality of side surface portions 22 and 23 are parallel to the XZ plane (second plane) orthogonal to the Y-axis direction and face each other, and form the side surfaces of the housing portion 10. The thickness of the plurality of side surface portions 22 and 23 in the Y-axis direction in this embodiment is approximately 1.6 mm and 4.5 mm, but of course it is not limited to this.

[0026] The front part 24 is parallel to the YZ plane and has an opening 231 for performing maintenance work on the electrical equipment E (see Fig. 1). In this embodiment, the front part 24 is rectangular, short in the Z-axis direction and long in the Y-axis direction. Of course, it is not limited to this, and it may be rectangular, long in the Z-axis direction and short in the Y-axis direction, or square. The rear part 25 has the same configuration as the front part 24.

[0027] The opening 231 is provided on the positive Y-axis side, has a rectangular opening 231' when viewed from the X-axis direction, and is rectangular, short in the Z-axis direction and long in the Y-axis direction. Of course, it is not limited to this, and it may be rectangular, long in the Z-axis direction and short in the Y-axis direction, or square.

[0028] The opening 231 further has a locking portion 231A parallel to the YZ plane on the side of the accommodation space W (see Fig. 2). The locking portion 231A restricts the movement of the closing tools 312 to 332 (described later) in the positive X-axis direction when they are locked.

[0029] Also, the front part 24 (opening 231) has a first elastic member D1 facing the door part 30 (see Fig. 2). The first elastic member D1 is provided outside the accommodation space W in the front part 24, and is a sealing material that ensures the waterproof and dustproof properties of the accommodation device 1 by fitting with a second elastic member D2 (described later) provided on the door part 30 when the door part 30 is closed.

[0030] The first elastic member D1 is annular, approximately a rectangular cube, and has a V-shaped recess with respect to the second elastic member D2. The first elastic member D1 is connected to the front part 24 by an adhesive or the like. The first elastic member D1 is formed of packing, but of course it is not limited to this.

[0031] Also, the first elastic member D1 may be integrally formed as a single member (one piece) without joints, or may be joined by a plurality of elastic members.

[0032] The front part 24 has a cylindrical part 50 for passing wiring for supplying power to the electrical device E from the X-axis direction (see FIG. 1). The number and hole size of the cylindrical part 50 can be changed as appropriate.

[0033] The front part 24 also has a plurality of hinge parts 26 that are provided between the opening 231 and the cylindrical part 50 and are connected to the door part 30. In the present embodiment, two hinge parts 26 are provided along the Y-axis direction, and the door part 30 described later is configured to be rotatable about the center in the Y-axis direction. That is, the door part 30 can be opened in the positive direction of the Z-axis. Of course, it is not limited to this, and three or more hinge parts 26 may be provided.

[0034] FIG. 3 is a front view of the door part 30 of the present invention, FIG. 4 is a view of the door part 30 of the present invention, (A) is a view of the door part 30 seen from above, (B) is a view showing the first stopper 312, FIG. 5 is a view showing the operation of the link mechanism 40, (A) is a view showing the operation of the third link member 43, and (B) is a view showing the operation of the second link member 42.

[0035] [Door part] The door part 30 has a door surface 30A that covers the opening 231 (opening 231') and a handle T that an operator can grip when opening and closing the door part 30.

[0036] The door surface 30A is rectangular when viewed from the X-axis direction and covers the opening 231, and is U-shaped when viewed from the Y-axis direction. The door surface 30A has a second elastic member D2 at a position facing the first elastic member D1 in the X-axis direction. The second elastic member D2 is annular like the first elastic member D1 and is approximately a rectangular cube, and has a V-shaped recess with respect to the first elastic member D1. The second elastic member D2 is connected to the door surface 30A by an adhesive or the like. The second elastic member D2 is formed of packing, but of course it is not limited to this.

[0037] Also, the second elastic member D2 may be integrally formed as a single member (one piece) without joints, or may be joined by a plurality of elastic members.

[0038] Also, the second elastic member D2 is alternately fitted into the concave portion of the first elastic member D1. Thereby, as described above, the waterproofness and dustproofness of the housing device 1 are ensured.

[0039] Also, when the door surface 30A closes the door portion 30, the portion that supports the second elastic member D2 in the U-shape abuts against the first elastic member D1. Thereby, the waterproofness and dustproofness of the housing device 1 are further ensured.

[0040] [Lock mechanism] The lock mechanism 100 includes a first lock portion 31 and a second lock portion 32 that are respectively provided on the door portion 30 and can be switched between a locked state that prevents the door portion 30 from changing from the closed state to the open state and an unlocked state that does not prevent the door portion 30 from changing from the closed state to the open state, and a link mechanism 40 configured to restrain the second lock portion 32 in the unlocked state when the first lock portion 31 is in the unlocked state and to release the restraint of the second lock portion 32 in the unlocked state as the first lock portion 31 is switched from the unlocked state to the locked state.

[0041] (First to third lock portions) The first to third lock portions 31 to 33 include a first lock portion 31 provided on the door portion 30 and capable of locking the closed state of the door portion 30, a second lock portion 32 provided at a position different from the first lock portion 31 when viewed from the X-axis direction in the door portion 30 and capable of locking the closed state of the door portion 30, and a third lock portion 33 provided at a position different from the first lock portion 31 and the second lock portion 32 when viewed from the X-axis direction in the door portion 30 and capable of locking the closed state of the door portion 30. When the door portion 30 is in the closed state (closed state), the closed state can be locked or the closed state can be unlocked to open the door portion 30.

[0042] The first locking portion 31 is provided rotatable about the X-axis on the accommodation space W side (inner side) of the door portion 30 and has a first stopper 312 that is locked to the locking portion 231A of the opening 231 in a state of locking the door portion 30 (first locked state), a first operating portion 310 provided outside the accommodation space W (outer side) of the door portion 30 and rotatable about the X-axis to enable the first stopper 312 to be locked to the locking portion 231A of the opening 231, and a first communication portion 311 that transmits the rotation operation by the first operating portion 310 to the first stopper 312, and is provided on the right side when viewed from the X-axis direction.

[0043] The first stopper 312 is approximately L-shaped and has a first claw portion (first claw portion) 312A and a first transmission portion 312B connected to the first claw portion 312A, and is interlocked with the rotation of the first operating portion 310 described above. That is, the first stopper 312 includes a first claw portion 312A that is movable between a locked position engaged with the opening 231 and an unlocked position not engaged with the opening 231.

[0044] The first claw portion 312A is approximately rectangular, and is locked to face the locking portion 231A by the operation of the first operating portion 310 to lock the door portion 30 in the first locked state, or is made to face away from the locking portion 231A to unlock the door portion 30 (first unlocked state).

[0045] The first operating portion 310 is approximately L-shaped, and an operation is performed to move the first claw portion 312A between the locked position and the unlocked position.

[0046] The first transmission portion 312B is approximately rectangular and extends in a direction orthogonal to the first claw portion 312A when viewed from the X-axis direction. The first transmission portion 312B transmits the rotation of the first operating portion 310 to a link mechanism 40 (first link member 41) described later. The first transmission portion 312B has a first connection hole 3121B for connecting to the first link member 41 described later. Thereby, the rotation of the first operating portion 310 is transmitted to the first link member 41 described later.

[0047] Further, the first stopper 312 further has a first connection hole 312C for connecting to the first connection portion 311. Thereby, the rotation of the first operation portion 310 is transmitted to the first stopper 312.

[0048] In the present embodiment, the first locking portion 31 locks the first operation portion 310 in a first locked state by rotating the first operation portion 310 from a direction parallel to the positive direction of the Z axis to a direction parallel to the negative direction of the Y axis (counterclockwise), and unlocks the first operation portion 310 by rotating the first operation portion 310 in a direction parallel to the positive direction of the Z axis. Of course, the direction of rotation of the first operation portion 310 for locking and unlocking the door portion 30 is not limited to this. Further, the operation of the first operation portion 310 is not limited to rotation and may be slid.

[0049] The second locking portion 32 has the same configuration as the first locking portion 31, and is provided rotatable about the X axis on the accommodation space W side (inside) of the door portion 30. In a state where the door portion 30 is locked (second locked state), a second stopper 322 locked to the locking portion 231A of the opening 231, and a second operation portion provided outside the accommodation space W (outside) of the door portion 30 and capable of rotating the second stopper 322 about the X axis to lock it to the locking portion 231A of the opening 231. 320, and a second connection portion (not shown, similar to the first connection portion 311) that transmits the rotation operation by the second operation portion 320 to the second stopper 322, and is provided near the center when viewed from the X-axis direction.

[0050] The second stopper 322 is approximately L-shaped, and has a second claw portion 322A and a second transmission portion 322B connected to the second claw portion 322A, and is interlocked with the rotation of the second operation portion 320 described above. That is, the second stopper 322 includes a second claw portion 322A that is movable between a locked position engaged with the opening 231 and an unlocked position not engaged with the opening 231.

[0051] The second claw portion 322A is approximately rectangular, and by the operation of the second operation portion 320, it is locked facing the locking portion 231A to put the door portion 30 in the second locked state, or the door portion 30 is unlocked (the second unlocked state) by not facing the locking portion 231A.

[0052] The second operation portion 320 is approximately L-shaped, and an operation for moving the second claw portion 322A between the locked position and the unlocked position is performed.

[0053] The second transmission portion 322B is approximately rectangular and extends in a direction orthogonal to the second claw portion 322A when viewed from the X-axis direction. The second transmission portion 322B transmits the rotation of the second operation portion 320 to a link mechanism 40 (second link member 42) described later. The second transmission portion 322B has a second connection hole (not shown, similar to the first connection hole 3121B) for connecting to the second link member 42 described later. Thereby, the rotation of the second operation portion 320 is transmitted to the second link member 42 described later.

[0054] Also, the second stopper 322 further has a second connection hole (not shown, similar to the first connection hole 312C) for connecting to the second communication portion. Thereby, the rotation of the second operation portion 320 is transmitted to the second stopper 322.

[0055] In the present embodiment, the second lock portion 32 is put in the second locked state by rotating the second operation portion 320 in a direction parallel to the negative direction of the Y-axis, and is put in the second unlocked state by rotating the second operation portion 320 in a direction parallel to the positive direction of the Z-axis. However, of course, the direction of rotation of the second operation portion 320 for locking and unlocking the door portion 30 is not limited to this. Also, the operation of the second operation portion 320 is not limited to rotation and may be slid.

[0056] The third locking portion 33 has the same configuration as the first locking portion 31 and the second locking portion 32, and is provided rotatable about the X-axis on the accommodation space W side (inner side) of the door portion 30. In the state of locking the door portion 30 (the third locked state), it has a third stopper 332 locked to the locking portion 231A of the opening 231, a third operating portion 330 provided outside the accommodation space W (outer side) of the door portion 30 and rotatable about the X-axis to lock the third stopper 332 to the locking portion 231A of the opening 231, and a third communication portion (not shown, similar to the first communication portion 311) for transmitting the rotation operation by the third operating portion 330 to the third stopper 332, and is provided on the left side when viewed from the X-axis direction.

[0057] The third stopper 332 is approximately L-shaped, and has a third claw portion 332A and a third transmission portion 332B connected to the third claw portion 332A, and is interlocked with the rotation of the third operating portion 330 described above. That is, the third stopper 332 includes a third claw portion 332A movable between a locked position engaged with the opening 231 and an unlocked position not engaged with the opening 231.

[0058] The third claw portion 332A is approximately rectangular, and is locked to face the locking portion 231A by the operation of the third operating portion 330 to lock the door portion 30 in the third locked state, or is made not to face the locking portion 231A to unlock the door portion 30 (the third unlocked state).

[0059] The third operating portion 330 is approximately L-shaped, and an operation for moving the third claw portion 332A between a locked position and an unlocked position is performed.

[0060] The third transmission portion 332B is approximately rectangular and extends in a direction orthogonal to the third claw portion 332A when viewed from the X-axis direction. The third transmission portion 332B transmits the rotation of the third operating portion 330 to a link mechanism 40 (the third link member 43) described later. The third transmission portion 332B has a third connection hole (not shown, similar to the first connection hole 3121B) for connecting to the third link member 43 described later. Thereby, the rotation of the third operating portion 330 is transmitted to the third link member 43 described later.

[0061] Further, the third stopper 332 further has a third connection hole (not shown, similar to the first connection hole 312C) for connecting to the third connection part. Thereby, the rotation of the third operation part 330 is transmitted to the third stopper 332.

[0062] In the present embodiment, the third lock part 33 locks in the third locked state by rotating the third operation part 330 in a direction parallel to the positive direction of the Y axis, and unlocks in the second unlocked state by rotating the third operation part 330 in a direction parallel to the positive direction of the Z axis. Of course, the rotation direction of the third operation part 330 for locking and unlocking the door part 30 is not limited to this. Further, the operation of the third operation part 330 is not limited to rotation, and it may be slid.

[0063] (Link mechanism) The link mechanism 40 is a mechanism provided on the door part 30 that connects the first lock part 31, the second lock part 32, and the third lock part 33, and enables the second lock part 32 to lock the closed state of the door part 30 by locking the closed state of the door part 30 by the first lock part 31 and the third lock part 33.

[0064] The link mechanism 40 includes a first link member 41 provided on the first lock part 31 and rotating in conjunction with the first operation part 310, a second link member 42 provided on the second lock part 32 and rotating in conjunction with the second operation part 320, and a third link member 43 provided on the third lock part 33 and rotating in conjunction with the third operation part 330.

[0065] The first link member 41 includes a disk-shaped first engagement member 41B that rotates in conjunction with the rotation of the first operation part 310, and a first plate part 41A that connects the first engagement member 41B and the first stopper 312 and transmits the rotation of the first operation part 310 to the first engagement member 41B.

[0066] The first engaging member 41B is located on the left side of the second engaging member 42B when viewed from the X-axis direction, and has a first circumferential portion (first engaging portion) 411C that is a circumferential part and a first notch portion 411B where a part of the circumference is cut away. The first notch portion 411B is located on the positive Z-axis side in the first unlocked state and is positioned to face the positive Y-axis side in the first locked state.

[0067] In the first unlocked state, an arc-shaped first circumferential portion 411C (circumferential portion excluding the first notch portion 411B) of the first engaging member 41B engages (enters) with one second notch portion 421B of the second engaging member 42B, which is in the second unlocked state described later. In the first locked state, the first notch portion 411B faces the second engaging member 42B, which is in the second unlocked state, in the Y-axis direction.

[0068] The first plate portion 41A is provided so as to intersect with a second plate portion 42A and a third plate portion 43A, which will be described later. As shown in FIG. 4(A), the first plate portion 41A has a plate-shaped first plate material 411A and a first connecting member 412A that connects the first plate material 411A and the first transmission portion 312B.

[0069] The first plate material 411A has a first hole portion 413A for the first connecting member 412A to penetrate the first plate material 411A and the first connecting hole 3121B. Although not shown, each configuration of the first plate portion 41A is also provided on the first engaging member 41B side.

[0070] Similar to the first link member 41, the third link member 43 has a disk-shaped third engaging member 43B that rotates in conjunction with the rotation of the third operation portion 330, and a third plate portion 43A that connects the third engaging member 43B and the third stopper 332 and transmits the rotation of the third operation portion 330 to the third engaging member 43B.

[0071] The third engaging member 43B is located on the right side of the second engaging member 42B when viewed from the X-axis direction, and has a third circumferential portion 431C that is a portion along the circumference and a third notch portion 431B in which a part of the circumference is cut out. The third notch portion 431B is located on the positive Z-axis side in the third unlocked state and is positioned so as to face the negative Y-axis side in the third locked state.

[0072] In the third unlocked state, the arc-shaped third circumferential portion 431C (circumferential portion excluding the third notch portion 431B) of the third engaging member 43B engages (enters) with the other second notch portion 421B of the second engaging member 42B which is in the second unlocked state described later, and in the third locked state, the third notch portion 431B faces the other second notch portion 421B of the second engaging member 42B which is in the second unlocked state in the Y-axis direction.

[0073] The third plate portion 43A is provided so as to intersect with the second plate portion 42A and the first plate portion 41A described later. The third plate portion 43 has, similarly to the first plate portion 41A, a plate-shaped third plate material and a third connecting member that connects the third plate material and the third transmission portion 332B.

[0074] The third plate material has a third hole portion for the third connecting member to penetrate through the first plate material 411A and the third connecting hole. Although not shown, each configuration of the third plate portion 43A is also provided on the side of the third engaging member 43B.

[0075] The second link member 42 has a disk-shaped second engaging member 42B that rotates in conjunction with the rotation of the second operation portion 320, and a second plate portion 42A that connects the second engaging member 42B and the second stopper 322 and transmits the rotation of the second operation portion 320 to the second engaging member 42B.

[0076] The second engaging member 42B is located between the first engaging member 41B and the third engaging member 43B when viewed in the X-axis direction, and has a second circumferential portion 421C which is a portion along the circumference, and a plurality of second notches 421B provided so as to face each other with a part of the circumference cut in the second unlocked state. The plurality of second notches 421B are located on the positive and negative sides of the Y-axis in the second unlocked state, and are positioned so as to face the positive and negative sides of the Z-axis in the second locked state.

[0077] In the second unlocked state, the plurality of second notches 421B of the second engaging member 42B can engage with the arc-shaped first circumferential portion 411C of the first engaging member 41B and the arc-shaped third circumferential portion 431C of the third engaging member 43B. In the second locked state, one of the arc-shaped second circumferential portions 421C (circumferential portion excluding the second notches 421B) of the second engaging member 42B engages (enters) with the first notch 411B of the first engaging member 41B, and the other of the arc-shaped second circumferential portions 421C of the second engaging member 42B engages with the third notch 431B of the third engaging member 43B.

[0078] The second plate portion 42A is provided so as to intersect the first plate portion 41A and the third plate portion 43A. Similar to the first plate portion 41A, the second plate portion 42A has a plate-shaped second plate material and a second connecting member that connects the second plate material and the second transmission portion 322B.

[0079] The second plate material has a second hole portion for the second connecting member to penetrate the second plate material 421A and the second connecting hole. Although not shown, each configuration of the second plate portion 42A is also provided on the side of the second engaging member 42B.

[0080] (Explanation of the operation of the locking mechanism) FIG. 6 is a diagram showing the operation of the lock mechanism 100 of the present invention. (A) is a diagram in which all the lock portions 31 to 33 are in the unlocked state, (B) is a diagram in which the first lock portion 31 is in the first locked state, (C) is a diagram in which the third lock portion 33 is in the third locked state, and (D) is a diagram in which the second lock portion 32 is in the second locked state.

[0081] First, in the initial state, as shown in FIG. 6(A), the first lock portion 31, the second lock portion 32, and the third lock portion 33 are in the unlocked state. Hereinafter, the operation of locking all the lock portions 31 to 33 will be described.

[0082] Next, as shown in FIG. 6(B), the case where the first lock portion 31 is brought into the first locked state will be described. The first link member 41 is rotated counterclockwise as viewed from the positive X-axis side by the first operation portion 310. At this time, the first circumferential portion 411C of the first engaging member 41B rotates along the second notch portion 421B of the second engaging member 42B until the first notch portion 411B faces the second notch portion 421B. That is, the first engaging member 41B is configured to be rotatable when the second engaging member 42B is in the second unlocked state.

[0083] Here, in the state of FIG. 6(A), when the second operation portion 320 is rotated to try to bring the second lock portion 32 into the second locked state, the second notch portion 421B abuts against the first circumferential portion 411C of the first engaging member 41B and the third circumferential portion 431C of the third engaging member 43B. That is, when the second operation portion 320 is rotated to try to bring the second lock portion 32 into the second locked state, the rotation of the second notch portion 421B is restricted by the first circumferential portion 411C and the third circumferential portion 431C (it is impossible to shift from the second unlocked state to the second locked state).

[0084] Also, when trying to rotate the second operation portion 320 to set the second locking portion 32 in the second locked state in the state of FIG. 6(B), the second notch portion 421B abuts against the third circumferential portion 431C. That is, when trying to rotate the second operation portion 320 to set the second locking portion 32 in the second locked state, the rotation of the second notch portion 421B is restricted by the third circumferential portion 431C (it is impossible to shift from the second unlocked state to the second locked state).

[0085] Next, as shown in FIG. 6(C), the case where the third locking portion 33 is set in the third locked state will be described. The third link member 43 is rotated clockwise as viewed from the positive X-axis side by the third operation portion 330. At this time, the third circumferential portion 431C rotates along the second notch portion 421B of the second engaging member 42B until the third notch portion 431B faces the second notch portion 421B. That is, the third engaging member 43B is configured to be rotatable when the second engaging member 42B is in the second unlocked state.

[0086] Next, as shown in FIG. 6(D), the case where the second locking portion 32 is set in the second locked state will be described. The second link member 42 is rotated counterclockwise as viewed from the positive X-axis side by the second operation portion 320. At this time, the second circumferential portion 421C rotates along the first notch portion 411B of the first engaging member 41 and the third notch portion 431B of the third engaging member 43B until the second notch portion 421B faces the positive and negative Z-axis sides and the second circumferential portion 421C faces the first notch portion 411B and the third notch portion 431B. That is, since the first notch portion 411B of the first locking portion 31 and the third notch portion 431B of the third locking portion 33 face each other in the Y-axis direction, the second engaging member 42B becomes rotatable.

[0087] As described above, when the link mechanism 40 locks the door portion 30 by the first to third lock portions 31 to 33, it becomes a mechanism in which the second lock portion 32 cannot be locked unless the first lock portion 31 and the third lock portion 33 are locked. Thus, when an operator checks whether the door portion 30 is locked, it is sufficient to check only the inclination (in this embodiment, whether it is inclined toward the negative direction of the Y axis) of the second operation portion 320 without checking all of the first to third operation portions 310 to 330 of the lock mechanism 100. Therefore, the time for the operator to check the locked state of the door portion 30 can be reduced.

[0088] In this embodiment, the first lock portion 31, the third lock portion 33, and the second lock portion 32 are locked in this order, but the present invention is not limited to this, and the third lock portion 33, the first lock portion 31, and the second lock portion 32 may be locked in this order.

[0089] When unlocking, it is unlocked by performing the reverse of the procedure described above. That is, when unlocking, the second operation portion 320 shifts the second lock portion 32 to the second unlocked state (from FIG. 6(D) to FIG. 6(C)), and the third lock portion 33 and the first lock portion 31 are shifted to the unlocked state (from FIG. 6(C) to FIG. 6(A)).

[0090] <Second Embodiment> Subsequently, a second embodiment of the present invention will be described. FIG. 7 is a perspective view of a lock mechanism 100' according to the second embodiment of the present invention, FIG. 8 is a side view of a door portion 30' according to the second embodiment of the present invention, and FIG. 9 is a diagram showing the operation of a link mechanism 40' according to the second embodiment, where (A) shows that the first lock portion 31' is in the first unlocked state, (B) shows that the first lock portion 31' is in the first locked state, and (C) is a diagram in which the rotating portion 322B' is rotated in the first locked state. Hereinafter, the configurations different from those of the first embodiment will be mainly described, and the same configurations as those of the first embodiment will be denoted by the same reference numerals and their descriptions will be omitted or simplified.

[0091] As will be described later, the mechanism of the locking mechanism 100' and the link mechanism 40' of the housing device 1 in this embodiment is different from that of the first embodiment.

[0092] [Locking mechanism] The locking mechanism 100' in this embodiment includes a first locking portion 31', a second locking portion 32', a third locking portion 33', and a link mechanism 40'.

[0093] (First to third locking portions) The first to third locking portions 31' to 33' include a first locking portion 31' provided on the door portion 30' and capable of locking the closed state of the door portion 30', a second locking portion 32' provided at a position different from the first locking portion 31' when viewed from the X-axis direction in the door portion 30' and capable of locking the closed state of the door portion 30', and a third locking portion 33' provided at a position different from the first locking portion 31' and the second locking portion 32' when viewed from the X-axis direction in the door portion 30' and capable of locking the closed state of the door portion 30'. In the closed state (closed state) of the door portion 30', the closed state can be locked or the closed state can be unlocked to open the door portion 30'.

[0094] The first locking portion 31' is provided rotatably about the X-axis on the housing space W side (inside) of the door portion 30'. In the first locked state of the door portion 30', a first stopper 312' that is locked to the locking portion 231A of the opening 231, a first operating portion 310 provided outside the housing space W (outside) of the door portion 30' and capable of being rotated about the X-axis to lock the first stopper 312' to the locking portion 231A of the opening 231, and a first connecting portion 311 that transmits the rotation operation by the first operating portion 310 to the first stopper 312'. It is provided on the right side when viewed from the positive direction of the X-axis.

[0095] The first stopper 312' has a first claw portion 312A and a first transmission portion 312B' connected to the first claw portion 312A, and is interlocked with the rotation of the first operating portion 310 described above.

[0096] The first claw portion 312A is approximately rectangular, and by the operation of the first operation portion 310, it is locked against the locking portion 231A to put the door portion 30' in the first locked state, or it is made not to face the locking portion 231A to put the door portion 30' in the first unlocked state.

[0097] The first transmission portion 312B' is approximately rectangular and extends in a direction intersecting the first claw portion 312A as viewed from the X-axis direction. The first transmission portion 312B' transmits the rotation of the first operation portion 310 to a link mechanism 40' (first link member 41') described later. The first transmission portion 312B' has a first connection hole for connecting to the first link member 41' described later. Thereby, the rotation of the first operation portion 310 is transmitted to the first link member 41' described later.

[0098] Also, the first stopper 312' further has a first connection hole for connecting to the first communication portion 311. Thereby, the rotation of the first operation portion 310 is transmitted to the first stopper 312'.

[0099] In the present embodiment, the first lock portion 31' is put in the first locked state by rotating the first operation portion 310 in a direction parallel to the negative direction of the Y-axis, and is put in the first unlocked state by rotating the first operation portion 310 in a direction parallel to the positive direction of the Z-axis. However, of course, the direction of rotation of the first operation portion 310 for locking and unlocking the door portion 30' is not limited to this. Also, the operation of the first operation portion 310 is not limited to rotation and may be slid.

[0100] The second locking portion 32' is provided rotatably about the X-axis on the accommodation space W side (inner side) of the door portion 30', and in the second locked state of the door portion 30', it includes a second stopper 322 that is locked to the locking portion 231A of the opening 231, a second operation portion 320 provided outside the accommodation space W (outer side) of the door portion 30' and rotatable about the X-axis to lock the second stopper 322 to the locking portion 231A of the opening 231, a rotating portion 322B' that is rotatable in conjunction with the second operation portion 320 when the closed state of the door portion 30' is locked by the first locking portion 31' and the third locking portion 33', and a second connecting portion (not shown, similar to the first connecting portion 311) that transmits the rotation operation by the second operation portion 320 to the second stopper 322 and the rotating portion 322B'. It is provided near the center when viewed from the X-axis direction.

[0101] The second stopper 322 has a second claw portion 322A and is interlocked with the rotation of the second operation portion 320 described above.

[0102] The second claw portion 322A is approximately rectangular, and is locked to face the locking portion 231A by the operation of the second operation portion 320 to put the door portion 30' in the second locked state, or is made not to face the locking portion 231A to put the door portion 30' in the second unlocked state.

[0103] The rotating portion 322B' is approximately rounded rectangular (circular), has a fourth notch portion 3221B' notched on the circumference, and is provided at a position facing the first link member 41' and the third link member 43' described later in the Z-axis direction. As shown in FIG. 9(A), the fourth notch portion 3221B' of the rotating portion 322B' faces the abutting portion 412B' (slide surface, second engaging portion) of the first link member 41' in the first unlocked state. Also, as shown in FIG. 9(B), the fourth notch portion 3221B' of the rotating portion 322B' faces the first notch portion 411B' of the first link member 41' in the first locked state. Further, as shown in FIG. 9(C), when the rotating portion 322B' faces the first notch portion 411B' (described later) of the first link member 41' in the first locked state, it can rotate in conjunction with the operation of the second operation portion 320 (from the second unlocked state to the second locked state).

[0104] Also, the second stopper 322 and the rotating portion 322B' further have a second connection hole (not shown, similar to the first connection hole 312C) for connecting to the second connecting portion. Thereby, the rotation of the second operation portion 320 is transmitted to the second stopper 322 and the rotating portion 322B'.

[0105] In the present embodiment, the second locking portion 32' sets the second locking state by rotating the second operation portion 320 in a direction parallel to the negative direction of the Y axis, and sets the second unlocking state by rotating the second operation portion 320 in a direction parallel to the positive direction of the Z axis. Of course, the rotation direction of the second operation portion 320 for locking and unlocking the door portion 30' is not limited to this. Further, the operation of the second operation portion 320 is not limited to rotation and may be slid.

[0106] The third locking portion 33 has the same configuration as the first locking portion 31, is provided rotatably about the X axis on the accommodation space W side (inner side) of the door portion 30', and in the third locking state of the door portion 30', a third stopper 332' that is locked to the locking portion 231A of the opening 231; a third operation portion 330 provided outside the accommodation space W (outer side) of the door portion 30' and capable of being rotated about the X axis to lock the third stopper 332' to the locking portion 231A of the opening 231; and a third connecting portion (not shown, similar to the first connecting portion 311) that transmits the rotation operation by the third operation portion 330 to the third stopper 332'. It is provided on the left side when viewed from the positive direction of the X axis.

[0107] The third stopper 332' has a third claw portion 332A and a third transmission portion 332B' connected to the third claw portion 332A, and is interlocked with the rotation of the third operation portion 330 described above.

[0108] The third claw portion 332A is approximately rectangular, and is locked to face the locking portion 231A by the operation of the third operation portion 330 to lock the door portion 30 in the third locking state, or the door portion 30 is unlocked in the third unlocking state by not facing the locking portion 231A.

[0109] The third transmission part 332B' is approximately rectangular and extends in a direction intersecting with the third claw part 332A when viewed from the X-axis direction. The third transmission part 332B transmits the rotation of the third operation part 330 to a link mechanism 40' (the third link member 43') described later. The third transmission part 332B' has a third connection hole (not shown, similar to the first connection hole 3121B) for connecting with the third link member 43' described later. Thereby, the rotation of the third operation part 330 is transmitted to the third link member 43' described later.

[0110] Also, the third stopper 332' further has a third connection hole (not shown, similar to the first connection hole 312C) for connecting with the third communication part. Thereby, the rotation of the third operation part 330 is transmitted to the third stopper 332'.

[0111] In the present embodiment, the third lock part 33' sets the third lock state by rotating the third operation part 330 in a direction parallel to the positive direction of the Y-axis, and sets the second unlock state by rotating the third operation part 330 in a direction parallel to the positive direction of the Z-axis. However, of course, the rotation direction of the third operation part 330 for locking and unlocking the door part 30' is not limited to this. Also, the operation of the third operation part 330 is not limited to rotation and may be slid.

[0112] (Link mechanism) The link mechanism 40' is a mechanism provided on the door part 30' that connects the first lock part 31', the second lock part 32', and the third lock part 33', and enables the second lock part 32' to lock the closed state of the door part 30' by locking the closed state of the door part 30' by the first lock part 31' and the third lock part 33'.

[0113] The link mechanism 40' has a plate-shaped first link member 41' (the third link member) provided on the first lock part 31' that slides and moves to a position adjacent to the second stopper 322 in conjunction with the first operation part 310, and a third link member 43' provided on the third lock part 33' that slides and moves to a position adjacent to the second stopper 322 in conjunction with the third operation part 330.

[0114] The first link member 41' has a plate-shaped first engaging member 41B' that slides in the Y-axis direction in conjunction with the rotation of the first operating portion 310, and a first plate portion 41A' that connects the first engaging member 41B' and the first transmission portion 312B' and transmits the rotation of the first operating portion 310 to the first engaging member 41B'.

[0115] The first engaging member 41B' is located above the second rotating portion 322B' (on the positive Z-axis side) when viewed from the X-axis direction. The first engaging member 41B' has a first contact portion 412B' that faces the fourth notch portion 3221B' of the rotating portion 322B' in the Z-axis direction in the first unlocked state (see Fig. 9(A)). In the present embodiment, the contact portion 412B' is provided at a position where it contacts the rotating portion 322B' when the rotating portion 322B' rotates from the second unlocked state to the second locked state while in the first unlocked state. That is, in the first unlocked state, when the rotating portion 322B' is rotated from the second unlocked state to the second locked state by the operation of the second operating portion 320, the contact portion 412B' contacts the rotating portion 322B' to restrict the rotation of the rotating portion 322B'.

[0116] The first engaging member 41B' further has a first notch portion 411B' (the third notch portion) that faces the rotating portion 322B' in the first locked state (Figs. 9(B) and (C)). In the present embodiment, the first notch portion 411B' enables the rotating portion 322B' to rotate in the first locked state. That is, in the first locked state, when the rotating portion 322B' is rotated to the second locked state by the operation of the second operating portion 320, it can be rotated along the first notch portion 411B'. Thereby, the second locking portion 32' (rotating portion 322B') can shift from the second unlocked state to the second locked state.

[0117] Also, as shown in FIG. 7, the link mechanism 40' further has a plurality of slide support portions 44' provided on the door portion 30' for the first engagement member 41B' and the third engagement member 43B' to slide in parallel in the Y-axis direction. The plurality of slide support portions 44' have holes penetrating in the Y-axis direction, and the first engagement member 41B' and the third engagement member 43B' are inserted into the holes to be slidable.

[0118] The third link member 43' is similar to the first link member 41B', and includes a plate-shaped third engagement member 43B' that slides in the Y-axis direction in conjunction with the rotation of the third operation portion 330, and a third plate portion 43A' that connects the third engagement member 43B' and the third transmission portion 332B' to transmit the rotation of the third operation portion 330 to the third engagement member 43B'.

[0119] The third engagement member 43B' is located above the second rotation portion 322B' (on the positive Z-axis side) when viewed from the X-axis direction. The third engagement member 43B' also has a third contact portion 432B' that faces the rotation portion 322B' in the Z-axis direction in the third unlocked state (see FIG. 10(C)). In the present embodiment, the contact portion 432B' is provided at a position where it contacts the rotation portion 322B' when the rotation portion 322B' rotates from the second unlocked state to the second locked state during the third unlocked state. That is, in the third unlocked state, when the rotation portion 322B' is rotated from the second unlocked state to the second locked state by the operation of the second operation portion 320, the contact portion 432B' contacts the rotation portion 322B' to restrict the rotation of the rotation portion 322B'.

[0120] Further, the third engaging member 43B' further has a third notch 431B' that faces the rotating portion 322B' in the third locked state (see FIGS. 11(B), (C), 12(B), and (C)). In the present embodiment, the third notch 431B' enables the rotating portion 322B' to rotate in the third locked state. That is, the third notch 431B' in the third locked state allows the rotating portion 322B' to rotate along the third notch 431B' when the rotating portion 322B' is rotated from the second unlocked state to the second locked state by the operation of the second operating portion 320. As a result, the second locking portion 32' (rotating portion 322B') can shift from the second unlocked state to the second locked state. Although the link mechanism 40' is described as being plate-shaped, it is of course not limited to being plate-shaped and may be cylindrical.

[0121] (Explanation of the operation of the locking mechanism) FIG. 10 is a diagram showing a state in which the first locking portion 31' to the third locking portion 33' in the second embodiment are all unlocked. (A) is a view of the door portion 30' seen from above, (B) is a rear view of the door portion 30', (C) is an enlarged view of the second locking portion 32'. FIG. 11 is a diagram showing a state in which the first locking portion 31' and the third locking portion 33' in the second embodiment are locked and the second locking portion 32' is unlocked. (A) is a view of the door portion 30' seen from above, (B) is a front view of the door portion 30', (C) is an enlarged view of the second locking portion 32'. FIG. 12 is a diagram showing a state in which the first locking portion 31' to the third locking portion 33' in the second embodiment are all locked. (A) is a view of the door portion 30' seen from above, (B) is a front view of the door portion 30', (C) is an enlarged view of the second locking portion.

[0122] First, in the initial state, as shown in FIGS. 10(A) to (C), the first locking portion 31', the second locking portion 32', and the third locking portion 33' are in the unlocked state. Hereinafter, the operation of locking all the locking portions 31' to 33' will be described.

[0123] Next, as shown in Fig. 11(B), a state will be described in which the first locking portion 31' is in the first locked state, the third locking portion 33' is in the third locked state, and the second locking portion 32' is in the second unlocked state.

[0124] First, the case where the first locking portion 31' is in the first locked state will be described. When the first operating portion 310 causes the first link member 41' to rotate counterclockwise as viewed from the positive X-axis side. At this time, the first engaging member 41B' is slid in the Y-axis direction. As a result, the first abutting portion 412B' that was opposed to the fourth notch portion 3221B' of the rotating portion 322B' in the first unlocked state is slid, and the first notch portion 411B' faces the fourth notch portion 3221B' of the rotating portion 322B' in the Z-axis direction.

[0125] Next, the case where the third locking portion 33' is in the third locked state will be described. When the third operating portion 330 causes the third link member 43' to rotate clockwise as viewed from the positive X-axis side. At this time, the third engaging member 43B' is slid in the Y-axis direction. As a result, the third abutting portion 432B' that was opposed to the fourth notch portion 3221B' of the rotating portion 322B' in the third unlocked state is slid, and the third notch portion 431B' faces the fourth notch portion 3221B' of the rotating portion 322B' in the Z-axis direction.

[0126] Here, in the states of Figs. 10(B) and (C), when the second operating portion 320 is rotated to try to set the second locking portion 32 in the second locked state, the rotating portion 322B' abuts against the first abutting portion 412B' or the third abutting portion 432B'. That is, when the second operating portion 320 is rotated to try to set the second locking portion 32 in the second locked state, the rotation is restricted by the first abutting portion 412B' or the third abutting portion 432B' (it is impossible to shift from the second unlocked state to the second locked state).

[0127] Next, as shown in FIG. 12, the case where the second lock portion 32' is in the second locked state will be described. When the second link member 42' is rotated counterclockwise as viewed from the positive X-axis side by the second operation portion 320. At this time, the rotating portion 322B' is rotated along the first notch portion 411B' of the first engaging member 41' and the third notch portion 431B' of the third engaging member 43B'. That is, since the first notch portion 411B' of the first lock portion 31' and the third notch portion 431B' of the third lock portion 33' are oriented so as to face the rotating portion 322B' in the Z-axis direction, the second lock portion 32' becomes rotatable (it can shift from the second unlocked state to the second locked state).

[0128] As described above, when the link mechanism 40' locks the door portion 30' by the first to third lock portions 31' to 33', the second lock portion 32' cannot be locked unless the first lock portion 31' and the third lock portion 33' are locked. Thus, when an operator confirms whether the door portion 30' is locked as described above, for example, when checking the lock mechanism 100', it is sufficient to check only the inclination of the second operation portion 320 (in this embodiment, whether it is inclined toward the negative Y-axis side) without checking all of the first operation portion 310 to the third operation portion 330. Therefore, the time for the operator to confirm the locked state of the door portion 30' can be reduced.

[0129] In this embodiment, the first lock portion 31', the third lock portion 33', and the second lock portion 32' are locked in this order, but it is not limited thereto, and they may be locked in the order of the third lock portion 33', the first lock portion 31', and the second lock portion 32'.

[0130] When unlocking, it is unlocked by performing the reverse of the above-described procedure. That is, when unlocking, the second operation portion 320 is used to shift the second lock portion 32' to the second unlocked state (from FIG. 12 to FIG. 11), and the third lock portion 33' and the first lock portion 31' are shifted to the unlocked state (from FIG. 11 to FIG. 10).

[0131] <Third Embodiment> Next, a third embodiment of the present invention will be described. FIG. 13 is a perspective view of a lock mechanism 100'' in the third embodiment of the present invention, and FIG. 14 is a view showing a state in which all of the first to third lock portions 31'' to 33'' in the third embodiment of the present invention are unlocked, where (A) is a rear view of the door portion 30'', and (B) is an enlarged view of the second lock portion 32''. Hereinafter, configurations different from those of the first embodiment will be mainly described, and configurations similar to those of the first embodiment will be denoted by the same reference numerals and their descriptions will be omitted or simplified.

[0132] In the housing device 1 of the present embodiment, the mechanisms of the lock mechanism 100'' and the link mechanism 40'' are different from those of the first embodiment, as will be described later.

[0133] [Lock Mechanism] The lock mechanism 100'' in the present embodiment includes a first lock portion 31'', a second lock portion 32'', a third lock portion 33'', and a link mechanism 40''.

[0134] (First to Third Lock Portions) The first to third lock portions 31'' to 33'' include a first lock portion 31'' provided on the door portion 30'' and capable of locking the closed state of the door portion 30'', a second lock portion 32'' provided at a position different from the first lock portion 31'' when viewed from the X-axis direction in the door portion 30'' and capable of locking the closed state of the door portion 30'', and a third lock portion 33'' provided at a position different from the first lock portion 31'' and the second lock portion 32'' when viewed from the X-axis direction in the door portion 30'' and capable of locking the closed state of the door portion 30''. In a state where the door portion 30'' is closed (closed state), the closed state can be locked or the closed state can be unlocked to open the door portion 30''.

[0135] The first locking portion 31'' is provided rotatable about the X-axis on the accommodation space W side (inner side) of the door portion 30''. In the first locked state of the door portion 30'', it has a first stopper 312'' that is locked to the locking portion 231A of the opening 231, a first operating portion 310 provided outside the accommodation space W (outer side) of the door portion 30'' and rotatable about the X-axis to lock the first stopper 312'' to the locking portion 231A of the opening 231, and a first connecting portion that transmits the rotation operation by the first operating portion 310 to the first stopper 312''. It is provided on the right side when viewed from the positive direction of the X-axis.

[0136] The first stopper 312'' has a first claw portion 312A and a first transmission portion 312B'' (first protruding portion) connected to the first claw portion 312A, and is interlocked with the rotation of the first operating portion 310 described above.

[0137] The first claw portion 312A is approximately rectangular, and is locked to face the locking portion 231A by the operation of the first operating portion 310 to put the door portion 30'' in the first locked state, or is made not to face the locking portion 231A to put the door portion 30'' in the first unlocked state.

[0138] The first transmission portion 312B'' is approximately rectangular and extends in a direction orthogonal to the first claw portion 312A when viewed from the X-axis direction. The first transmission portion 312B'' transmits the rotation of the first operating portion 310 to a link mechanism 40'' (first link member 41'') described later.

[0139] The first transmission portion 312B'' is inserted (engaged, enters) into a first link hole 41A'' (described later) of the first link member 41'' in the first unlocked state, and the insertion into the first link hole 41A'' of the first link member 41'' is disengaged (withdrawn) in the first locked state. When the first transmission portion 312B'' shifts from the first unlocked state to the first locked state, the first transmission portion 312B'' slides the first link hole 41A'' to the negative Y-axis side (the side where the first transmission portion 312B'' rotates), and further the first transmission portion 312B'' rotates about the X-axis so that the insertion is disengaged as described above.

[0140] The first stopper 312'' further has a first connection hole for connecting to the first connection part. Thereby, the rotation of the first operation part 310 is transmitted to the first stopper 312''.

[0141] In the present embodiment, the first locking part 31'' sets the first locking state by rotating the first operation part 310 in a direction parallel to the negative direction of the Y axis, and sets the first unlocking state by rotating the first operation part 310 in a direction parallel to the positive direction of the Z axis. Of course, the rotation direction of the first operation part 310 for locking and unlocking the door part 30'' is not limited to this. Further, the operation of the first operation part 310 is not limited to rotation, and it may be slid.

[0142] The second locking part 32'' is provided rotatably around the X axis on the accommodation space W side (inside) of the door part 30''. In the second locking state of the door part 30'', it has a second stopper 322'' locked to the locking part 231A of the opening 231, a second operation part 320 provided outside the accommodation space W (outside) of the door part 30'' and rotatable around the X axis to lock the second stopper 322'' to the locking part 231A of the opening 231, and a second connection part (not shown, similar to the first connection part 311) for transmitting the rotation operation by the second operation part 320 to the second stopper 322'', and is provided near the center when viewed from the X axis direction.

[0143] The second stopper 322 has an approximately L shape, and has a second claw part 322A and a second transmission part 322B'' (second protruding part), and interlocks with the rotation of the second operation part 320 described above.

[0144] The second claw part 322A is approximately rectangular, and is locked to face the locking part 231A by the operation of the second operation part 320 to lock the door part 30'' in the second locking state, or is made not to face the locking part 231A to unlock the door part 30'' in the second unlocking state.

[0145] The second transmission part 322B'' is approximately rectangular, and extends in a direction orthogonal to the second claw part 322A as viewed from the X-axis direction. The second transmission part 322B'' transmits the rotation of the second operation part 320 to a link mechanism 40'' described later. The second transmission part 322B'' is inserted (engaged, enters) into the second link hole 41B'' of the first link member 41'' and the second link hole 43B'' of the third link member 43'' in the second unlock state, and disengages (exits) from the second link hole 41B'' of the first link member 41'' and the second link hole 43B'' of the third link member 43'' in the second lock state.

[0146] The second transmission part 322B'' has a first step part 3221B'' that is inserted into the second link hole 43B'' of the third link member 43'' and protrudes toward the positive Y-axis side (the first lock part 31'' side), and a second step part 3222B'' that is provided on the positive Z-axis side of the first step part 3221B'' and protrudes toward the positive Y-axis side (the first lock part 31'' side).

[0147] The first step part 3221B'' is provided at a position where it is not inserted into the second link hole 41B'' as viewed from the X-axis direction, but is only inserted into the second link hole 43B''. Also, the second step part 3222B'' is provided at a position where it is not inserted into the second link hole 43B'' in the second unlock state. Thereby, even if the second operation part 320 is rotated clockwise (originally counterclockwise) to set it to the second lock state, the second step part 3222B'' abuts against the second link hole 43B'', so that reverse rotation can be prevented.

[0148] The second transmission part 322B'' is inserted into the second link holes 41B'' and 43B'' in the second unlocked state when the first lock part 31'' and the third lock part 33'' are locked, and the insertion into the second link holes 41B'' and 43B'' is disengaged in the second locked state. When the second transmission part 322B'' shifts from the second unlocked state to the second locked state, the second transmission part 322B'' slides the second link holes 41B'' and 43B'' in the negative Y-axis direction (the side where the second transmission part 322B'' rotates), and then the second transmission part 322B'' rotates around the X-axis, so that the insertion is disengaged as described above.

[0149] The second stopper 322'' further has a second connection hole (not shown, similar to the first connection hole 312C) for connecting to the second communication part. Thereby, the rotation of the second operation part 320 is transmitted to the second stopper 322''.

[0150] In the present embodiment, the second lock part 32'' is in the second locked state by rotating the second operation part 320 in a direction parallel to the negative Y-axis, and is in the second unlocked state by rotating the second operation part 320 in a direction parallel to the positive Z-axis. Of course, the rotation direction of the second operation part 320 for locking and unlocking the door part 30'' is not limited to this.

[0151] The third lock part 33'' has the same configuration as the first lock part 31'', and is provided rotatably around the X-axis on the accommodation space W side (inside) of the door part 30''. In the third locked state of the door part 30'', it has a third stopper 332'' locked to the locking part 231A of the opening 231, a third operation part 330 provided outside the accommodation space W (outside) of the door part 30'' and rotatable around the X-axis to lock the third stopper 332'' to the locking part 231A of the opening 231, and a third communication part for transmitting the rotation operation by the third operation part 330 to the third stopper 332'', and is provided on the left side when viewed from the positive X-axis direction.

[0152] The third stopper 332'' has a third claw portion 332A and a third transmission portion 332B'' connected to the third claw portion 332A, and is interlocked with the rotation of the above-described third operation portion 330.

[0153] The third claw portion 332A is approximately rectangular, and is locked against the locking portion 231A by the operation of the third operation portion 330 to put the door portion 30'' in the third locked state, or the door portion 30'' is put in the third unlocked state by not facing the locking portion 231A.

[0154] The third transmission portion 332B'' is approximately rectangular and extends in a direction orthogonal to the third claw portion 332A as viewed from the X-axis direction. The third transmission portion 332B'' transmits the rotation of the third operation portion 330 to a link mechanism 40'' (third link member 43'') described later.

[0155] The third transmission portion 332B'' is inserted into a first link hole 43A'' (described later) of the third link member 43'' in the third unlocked state, and the insertion into the first link hole 43A'' of the third link member 43'' is disengaged in the third locked state. When the third transmission portion 332B'' shifts from the third unlocked state to the third locked state, the third transmission portion 332B'' slides the first link hole 43A'' to the positive Y-axis side (the side where the third transmission portion 332B'' rotates), and further rotates around the X-axis so that the insertion is disengaged as described above.

[0156] The third stopper 332'' further has a third connection hole for connecting to the third communication portion 331. Thereby, the rotation of the third operation portion 330 is transmitted to the third stopper 332''.

[0157] In the present embodiment, the third lock portion 33'' is brought into the third locked state by rotating the third operation portion 330 in a direction parallel to the positive Y-axis direction, and is brought into the third unlocked state by rotating the third operation portion 330 in a direction parallel to the positive Z-axis direction. Of course, the direction of rotation of the third operation portion 330 for locking and unlocking the door portion 30'' is not limited to this.

[0158] (Link mechanism) The link mechanism 40'' is a mechanism provided on the door portion 30'' that connects the first lock portion 31'', the second lock portion 32'', and the third lock portion 33'', and locks the closed state of the door portion 30'' by the first lock portion 31'' and the third lock portion 33'', enabling the second lock portion 32'' to lock the closed state of the door portion 30''.

[0159] The link mechanism 40'' includes a plate-shaped first link member 41'' (fourth link member) provided on the first lock portion 31'' that slides in conjunction with the first operation portion 310 and the second operation portion 320, and a third link member 43'' provided on the third lock portion 33'' that slides in conjunction with the third operation portion 330 and the second operation portion 320.

[0160] The first link member 41'' includes a plate-shaped first engaging member 411'' that slides in the Y-axis direction in conjunction with the rotation of the first operation portion 310, a first link hole 41A'' provided in the first engaging member 411'' through which the first transmission portion 312B'' is inserted in the first unlocked state, a second link hole 41B'' provided in the first engaging member 411'' through which the second transmission portion 322B'' is inserted in the second unlocked state, a first restricting portion 41C'' (restricting portion) that restricts the first lock portion 31'' from sliding the second lock portion 32'' from the second unlocked state to the second locked state in the first unlocked state, and a second restricting portion 42C'' that restricts the first lock portion 31'' and the second lock portion 32'' from sliding the third lock portion 33'' from the third locked state to the third unlocked state in the locked state.

[0161] The first engaging member 411'' is located on the negative direction side of the first step portion 3221B'' described above in the Z-axis direction. The first link hole 41A'' has an elongated hole shape along the Y-axis direction, and is shaped and sized such that the positive Y-axis side of the first transmission portion 312B'' does not contact the first link hole 41A'' when the first lock portion 31'' transitions from the first unlocked state to the first locked state.

[0162] Also, in the first unlocking state of the first link hole 41A'', the first transmission portion 312B'' is biased toward the negative Y-axis side. That is, the first link hole 41A'' has a space where the first transmission portion 312B'' does not exist on the positive Y-axis side in the first unlocking state. The first transmission portion 312B'' can slide the first link member 41'' in the Y-axis direction while contacting the first link hole 41A'' when shifting the first locking portion 31'' from the first unlocking state to the first locking state.

[0163] The second link hole 41B'' has an elongated hole shape along the Y-axis direction, and has a shape and size such that the first step portion 3221B'' and the second step portion 3222B'' of the second transmission portion 322B'' do not contact the second link hole 41B'' when the second locking portion 32'' shifts from the second unlocking state to the second locking state.

[0164] Also, the second transmission portion 322B'' in the first unlocking state of the second link hole 41B'' is biased toward the negative Y-axis side. That is, the second link hole 41B'' has a space where the second transmission portion 322B'' does not exist on the positive Y-axis side in the first unlocking state. And, in the first locking state of the second link hole 41B'', the second transmission portion 322B'' is biased toward the positive Y-axis side. That is, the second link hole 41B'' has a space where the second transmission portion 322B'' does not exist on the negative Y-axis side in the first locking state. The above space is formed by sliding the first link member 41'' in the Y-axis direction while contacting the first link hole 41A'' by the first transmission portion 312B'' when shifting the second locking portion 32'' from the second unlocking state to the second locking state.

[0165] The first restricting portion 41C'' is provided so as to extend along the Z-axis direction on the first engaging member 41''. When the first locking portion 31'' slides the second locking portion 32'' from the second unlocked state to the second locked state in the first unlocked state, it abuts against the first stopper 312'' while being inserted into the first link hole 41A''. Thereby, the rotation of the second locking portion 32'' can be restricted. The second restricting portion 42C'' is provided so as to extend along the Z-axis direction from the end portion in the negative Y-axis direction of the first engaging member 41''. When the first locking portion 31'' and the second locking portion 32'' are in the locked state and the first engaging member 41'' slides the third locking portion 33'' from the third locked state to the third unlocked state, it abuts against the third stopper 332''. Thereby, the rotation of the third locking portion 33'' can be restricted.

[0166] The third link member 43' is the same as the first link member 41B'. It includes a plate-shaped third engaging member 431A'' that slides in the Y-axis direction in conjunction with the rotation of the third operating portion 330, a first link hole 43A'' provided in the third engaging member 431A'' through which the third transmission portion 332B'' is inserted in the third unlocked state, a second link hole 43B'' provided in the third engaging member 431A'' through which the second transmission portion 322B'' is inserted in the second unlocked state, and a third restricting portion 43C'' that restricts the slide of the second locking portion 32'' from the second unlocked state to the second locked state when the third locking portion 33'' is in the third unlocked state.

[0167] The third engaging member 431A'' is provided at a position overlapping the first stepped portion 3221B'' described above when viewed from the X-axis direction. The first link hole 43A'' has an elongated hole shape along the Y-axis direction, and has a shape and size such that the negative Y-axis side of the third transmission portion 332B'' does not abut against the first link hole 43A'' when the third locking portion 33'' shifts from the third unlocked state to the third locked state.

[0168] Also, in the third unlocking state for the first link hole 43A'', the third transmission part 332B'' is positioned biased toward the negative Y-axis side. That is, the first link hole 43A'' has a space where the third transmission part 332B'' does not exist on the positive Y-axis side in the third unlocking state. Further, when the third locking part 33'' shifts from the third unlocking state to the third locking state, the third transmission part 332B'' can slide the first link member 41'' in the Y-axis direction while contacting the first link hole 43A''.

[0169] The second link hole 43B'' has an elongated hole shape along the Y-axis direction, and has a shape and size such that the first step part 3221B'' and the second step part 3222B'' of the second transmission part 322B'' do not contact the second link hole 43B'' when the second locking part 32'' shifts from the second unlocking state to the second locking state.

[0170] Also, the second transmission part 322B'' in the third unlocking state for the second link hole 43B'' is positioned biased toward the negative Y-axis side. That is, the second link hole 43B'' has a space where the second transmission part 322B'' does not exist on the positive Y-axis side in the third unlocking state. And, in the third locking state for the second link hole 43B'', the second transmission part 322B'' is positioned more biased toward the negative Y-axis side. That is, the second link hole 43B'' has a space where the second transmission part 322B'' does not exist on the negative Y-axis side in the third locking state. The third transmission part 332B'' forms the above space by sliding the third link member 43'' in the Y-axis direction while contacting the second link hole 43B'' when the second locking part 32'' shifts from the second unlocking state to the second locking state.

[0171] The third restricting part 43C'' is provided on the third engaging member 43'' and contacts the third stopper 332'' when the third locking part 33'' slides the second locking part 32'' from the second unlocking state to the second locking state in the third unlocking state.

[0172] The third regulating part 43C'' is provided so as to extend along the Z-axis direction on the third engaging member 43'' and abuts on the third stopper 332'' when the third locking part 33'' slides the second locking part 32'' from the second unlocked state to the second locked state in the third unlocked state. Thereby, the rotation of the second locking part 32'' can be regulated.

[0173] Further, as shown in FIG. 13, the link mechanism 40'' further has a plurality of slide support parts 44'' provided on the door part 30'' for sliding the first engaging member 41'' and the third engaging member 43'' in parallel with the Y-axis direction. The plurality of slide support parts 44'' have a space penetrating in the Y-axis direction, and the first engaging member 41'' and the third engaging member 43'' are inserted into the space and can slide.

[0174] (Explanation of the operation of the locking mechanism) FIG. 14 is a diagram showing a state in which the first locking portion 31'', the second locking portion 32'', and the third locking portion 33'' in the third embodiment of the present invention are all unlocked. (A) is a rear view of the door portion 30'', and (B) is an enlarged view of the second locking portion 32''. FIG. 15 is a diagram showing a state in which the first locking portion 31'' is locked, and the second locking portion 32'' and the third locking portion 33'' are unlocked in the third embodiment. (A) is a rear view of the door portion 30'', and (B) is an enlarged view of the second locking portion 32''. FIG. 16 is a diagram showing a state in which the first locking portion 31'' and the third locking portion 33'' are locked, and the second locking portion 32'' is unlocked in the third embodiment. FIG. 17 is an enlarged view of the second locking portion 32'' when the first locking portion 31'' and the third locking portion 33'' are locked, and the second locking portion 32'' is unlocked in the third embodiment. (A) is a view from the side of the first link member 41'', and (B) is a view from the side of the third link member 43''. FIG. 18 is a diagram showing a state in which the first to third locking portions 31'' to 33'' are locked in the third embodiment. FIG. 19 is an enlarged view of the second locking portion 32'' when the first to third locking portions 31'' to 33'' are locked in the third embodiment. (A) is a view from the side of the first link member 31'', and (B) is a view from the side of the third link member 33''.

[0175] First, in the initial state, as shown in FIGS. 14(A) and 14(B), the first locking portion 31'', the second locking portion 32'', and the third locking portion 33'' are in an unlocked state. Hereinafter, an operation of locking all the locking portions 31'' to 33'' will be described.

[0176] Next, as shown in FIG. 15(A), a state in which the first locking portion 31'' is in the first locked state, the third locking portion 33'' is in the third unlocked state, and the second locking portion 32'' is in the second unlocked state will be described.

[0177] The first transmission part 312B'' rotates counterclockwise as viewed from the positive X-axis side by the first operation part 310. At this time, the first engagement member 411'' is slid in the Y-axis direction while the first link hole 41A'' is pushed in the Y-axis direction by the first transmission part 312B''. As a result, as shown in FIG. 15(A), the first restricting part 41C'' faces the first stopper 312'' in the Z-axis direction. Thereby, the first restricting part 41C'' can slide in the Y-axis direction (not hindered from sliding by the first stopper 312'').

[0178] Next, as shown in FIGS. 16, 17(A), and (B), the case where the third lock part 33' is in the third locked state will be described. The third transmission part 332B'' rotates clockwise as viewed from the positive X-axis side by the third operation part 330. At this time, the third engagement member 431'' is slid in the Y-axis direction while the first link hole 43A'' is pushed in the Y-axis direction by the third transmission part 332B''. As a result, as shown in FIG. 16, the third restricting part 43C'' faces the third stopper 332'' in the Z-axis direction. Thereby, the third restricting part 43C'' can slide in the Y-axis direction (not hindered from sliding by the third stopper 332'').

[0179] Also, when attempting to shift the second lock part 32'' to the second locked state in the state of FIG. 14, the first engagement member 411'' is slid in the Y-axis direction. At this time, the first restricting part 41C'' abuts on the first transmission part 312B'', thereby restricting the shift to the second locked state (unable to shift from the second unlocked state to the second locked state). Also, when attempting to shift the second lock part 32'' to the second locked state in the state of FIG. 15, the third engagement member 431'' is slid in the Y-axis direction. At this time, the third restricting part 43C'' abuts on the third transmission part 332B'', thereby restricting the shift to the second locked state (unable to shift from the second unlocked state to the second locked state).

[0180] Next, as shown in FIGS. 18, 19(A), and 19(B), the case where the second lock portion 32'' is in the second locked state will be described. The second link member 42'' is rotated counterclockwise as viewed from the positive X-axis side by the second operation portion 320. At this time, the first engaging member 411'' and the third engaging member 431'' are slid in the Y-axis direction while the second link hole 41B'' and the second link hole 43B'' are pushed in the Y-axis direction by the second transmission portion 322B''. Since the first restricting portion 41C'' and the third restricting portion 43C'' are already slidable in the Y-axis direction, the rotation of the second lock portion 32'' is not hindered, and the second lock portion 32'' can shift to the second locked state. Further, since the first engaging member 411'' is slid in the Y-axis direction (toward the third stopper 332''), as shown in FIG. 18, the first restricting portion 41C'' faces the first transmission portion 312B'' in the Z-axis direction. That is, when the first lock portion 31'' and the second lock portion 32'' are in the locked state and the first engaging member 411'' is slid to move the third lock portion 33'' from the third locked state to the third unlocked state, it abuts against the third stopper 332''. Therefore, the rotation of the first lock portion 31'' can be restricted. Further, since the first engaging member 411'' is slid in the Y-axis direction (toward the third stopper 332''), as shown in FIG. 18, the second restricting portion 42C'' faces the third transmission portion 332B'' in the Z-axis direction. That is, when the first lock portion 31'' and the second lock portion 32'' are in the locked state and the first engaging member 411'' is slid to move the third lock portion 33'' from the third locked state to the third unlocked state, it abuts against the third stopper 332''. Therefore, the rotation of the third lock portion 33'' can be restricted. Therefore, in order to unlock all of the first lock portion 31'', the second lock portion 32'', and the third lock portion 33'', it is necessary to first put the second lock portion 32'' into the second unlocked state.

[0181] As described above, when the link mechanism 40'' locks the door 30'' by the first to third lock portions 31'' to 33'', the second lock portion 32'' cannot be locked unless the first lock portion 31'' and the third lock portion 33'' are locked. Thus, when an operator checks whether the door 30'' is locked as described above, the operator only needs to check the inclination (in this embodiment, whether it is inclined toward the negative direction of the Y axis) of the second operation portion 320 without checking all of the first to third operation portions 310 to 330 of the lock mechanism 100''. Therefore, the time for the operator to check the locked state of the door 30'' can be reduced.

[0182] In this embodiment, the first lock portion 31'', the third lock portion 33'', and the second lock portion 32'' are locked in this order, but the present invention is not limited to this, and they may be locked in the order of the third lock portion 33'', the first lock portion 31'', and the second lock portion 32''.

[0183] When unlocking, it is unlocked by performing the reverse of the procedure described above. That is, when unlocking, the second operation portion 320 shifts the second lock portion 32'' to the second unlocked state (from FIG. 18 to FIG. 16), the third lock portion 33' to the unlocked state (from FIG. 16 to FIG. 15), and the first lock portion 31' to the unlocked state (from FIG. 15 to FIG. 14).

[0184] <Modification Example> Subsequently, a modification example of the present invention will be described. In this embodiment, the locking of the door 30 is confirmed by visually checking the inclination of the second operation portion 320 of the door 30, but of course, the present invention is not limited to this, and a detection device detected using a sensor may be used. The configuration for detection is not particularly limited, and an optical switch such as a proximity switch or a photocoupler can be adopted.

[0185] As an example of the adoption of a proximity switch, for instance, a reed switch provided at a position in the opening 231 that faces the second stopper 322 in the Z-axis direction in the second locked state, and a magnet provided at a position on the second stopper 322 that faces the reed switch in the second locked state are respectively arranged. When the second stopper 322 rotates to the second locked state, the reed switch senses the magnet and is configured to detect the locked state (switch ON). Of course, the reed switch may be provided on the second stopper 322 and the magnet may be provided in the opening 231.

[0186] As an example of the adoption of an optical switch, for instance, a light-receiving element such as a phototransistor provided at a position in the opening 231 that faces the second stopper 322 in the Z-axis direction in the second locked state, and a light-emitting element such as an LED provided at a position on the second stopper 322 that faces the phototransistor in the second locked state are respectively arranged. When the second stopper 322 rotates to the second locked state, the light-receiving element receives the light from the light-emitting element and is configured to detect the locked state (switch ON). Of course, the light-receiving element may be provided on the second stopper 322 and the light-emitting element may be provided in the opening 231.

[0187] When a proximity switch, an optical switch, or the like is switched ON, the detection device may be configured to transmit the switch-ON information, for example, to a display panel provided in the driver's seat of a train, either wired or wirelessly. Thereby, it is possible to confirm whether it is in the second locked state without leaving the driver's seat. Also, the detection device may be supplied with power from the outside through wiring, or may have a power source pre-installed inside the detection device.

[0188] The embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made, and the configurations of each embodiment and modification example may be combined. For example, in this embodiment, three locking portions are provided, but of course, it is not limited to this, and two may be provided, or four or more may be provided. For example, in this embodiment, the storage device 1 installed under the floor of the railway vehicle has been described. However, for example, it may be provided on the on-vehicle device on the railway vehicle floor, indoor and outdoor switchboards and distribution boxes, equipment rooms, etc.

Explanation of Reference Numerals

[0189] 1... Storage device 30... Door portion 31... First locking portion 310... First operation portion 312A... First stopper 32... Second locking portion 320... Second operation portion 322... Second stopper 33... Third locking portion 330... Third operation portion 332... Third stopper 40... Link mechanism 41... First link member 42... Second link member 100... Locking mechanism E... Electrical equipment W... Storage space

Claims

1. A lock mechanism for a door that covers an opening of a storage device having a storage space for storing an electric device, The lock mechanism includes a first lock section and a second lock section that are provided on the door section and are switchable between a locked state that prevents the door section from changing from a closed state to an open state and an unlocked state that does not prevent the door section from changing from a closed state to an open state, and a link mechanism configured to restrict the second lock section to the unlocked state when the first lock section is in the unlocked state and to release the restriction of the second lock section to the unlocked state in response to an operation of switching the first lock section from the unlocked state to the locked state. Locking mechanism.

2. 2. The locking mechanism of claim 1, the first locking portion includes a first closing tool provided on the inside of the door portion and having a first claw portion movable between a locked position where the first claw portion engages with the opening and an unlocked position where the first claw portion does not engage with the opening, and a first operating portion provided on the outside of the door portion and operated to move the first claw portion between the locked position and the unlocked position, The second locking portion includes a second closing tool provided on the inside of the door portion and having a second claw portion movable between a locked position where the second claw portion engages with the opening and an unlocked position where the second claw portion does not engage with the opening, and a second operating portion provided on the outside of the door portion and operated to move the second claw portion between the locked position and the unlocked position. Locking mechanism.

3. 3. The locking mechanism according to claim 2, the link mechanism includes a first link member that rotates in conjunction with an operation of the first operating unit, and a second link member that rotates in conjunction with an operation of the second operating unit, The first link member has a first engagement portion, and when the first lock portion is in the locked state, the first link member allows rotation of the second link member, and when the first lock portion is in the unlocked state, the first engagement portion restricts the rotation of the second link member. Locking mechanism.

4. 4. The locking mechanism according to claim 3, the first link member has a circular shape with a portion along a circumference being the first engagement portion, and has a first cutout portion cut out on the circumference, the second link member is circular and has a second cutout portion cut out along its circumference, The first link member allows the second link member to rotate when the first cutout portion faces the second cutout portion, and restricts the second link member from rotating when the first engagement portion enters the second cutout portion. Locking mechanism.

5. 3. The locking mechanism according to claim 2, the link mechanism includes a third link member having a sliding surface that slides at a position adjacent to the second closing tool in response to an operation of the first operating part, The third link member has a second engagement portion, and allows the second closing device to rotate when the first locking portion is in the locked state, and restricts the rotation of the second closing device by the second engagement portion when the first locking portion is in the unlocked state. Locking mechanism.

6. 6. The locking mechanism according to claim 5, the third link member is a plate having the slide surface as the first engagement portion, and has a third cutout portion cut out from the slide surface; the second locking portion is circular and further includes a rotating portion having a fourth notch portion cut out on a circumference thereof, The third link member allows the second link member to rotate when the third cutout portion faces the fourth cutout portion, and restricts the second link member from rotating when the slide surface is adjacent to the fourth cutout portion. Locking mechanism.

7. 3. The locking mechanism according to claim 2, the first closure has a first projection; the second closure has a second projection; the link mechanism includes a fourth link member that is slidable along the first closure and the second closure; the fourth link member has a first hole portion into which the first protrusion enters when the first lock portion is in the locked state and from which the first protrusion exits when the first lock portion is in the unlocked state, a second hole portion into which the second protrusion enters when the second lock portion is in the locked state and from which the second protrusion exits when the second lock portion is in the unlocked state, and a restricting portion that restricts sliding movement of the fourth link member when the first protrusion enters the first hole portion, The fourth link member is configured such that, when the first locking portion is in the unlocked state, the second protrusion is restrained in the second hole by the restriction of sliding movement by the restriction portion, and, when the first locking portion is in the locked state, the second protrusion is capable of exiting from the second hole while sliding the fourth link member. Locking mechanism.

8. 2. The locking mechanism of claim 1, The storage device is provided under the floor of a railway vehicle. Locking mechanism.

Images