Cabinets and hinges

Abstract

In a cabinet where the door can be opened more than 180° in front of the enclosure, and where the door can be removed from the enclosure by operating the hinge pin while the door is open, the design of the hinge's door-side wing is improved, and the door does not come off due to external vibrations such as earthquakes, without requiring the operation lever to turn the pin during the door hanging process. [Solution] An elastic member 40 is placed between the frame-side wing 20 and the pin 30 to maintain the connection state in which the pin 30 spans between the shaft cylinder portion 12 of the door-side wing 10 and the shaft cylinder portion 23 of the frame-side wing 20. The shaft portion 31 of the pin 30 is positioned in front of the front portion 101 of the door 100. A lever receiver portion 104 is provided on the door 100 side that rotates when the door is closed to a locked position to restrict the operation lever portion 32 from moving to the pin retraction position when the door is connected.

Description

Technical Field

[0006]

[0001] This invention relates to a cabinet suitable for housing electrical and electronic equipment, and a hinge suitable for connecting the door and the housing of the cabinet.

Background Art

[0002] A cabinet for electrical and electronic equipment houses the electrical and electronic equipment into the cabinet through an entrance opened on the front surface of the housing, and covers the entrance with a door. The door and the housing are connected by a hinge. The door is supported with respect to the housing in a state where it can be opened and closed around the pin of the hinge as a rotation center. When performing the work of installing the electrical and electronic equipment inside the housing, in order to prevent the door from interfering with the work, the installation work may be performed after removing the door from the housing. Therefore, it is required that the door can be easily removed.

[0003] In addition, cabinets for electrical and electronic equipment may be arranged in parallel closely. For example, server racks that house communication servers may arrange the housings of adjacent server racks without a gap. In such a case, it is required that the opened door does not interfere with the adjacent cabinet while the door can be opened to fully open the entrance of the housing.

[0004] As a hinge suitable for such a cabinet for electrical and electronic equipment, there is one including a door-side blade attached to the front surface portion of the door, a frame-side blade attached to the front surface of the housing, a pin arranged to be axially movable with respect to the shaft cylinder portion of the frame-side blade and the shaft cylinder portion of the door-side blade, and an elastic member that biases the pin in a direction to maintain the connection state in which the pin extends between the shaft cylinder portion of the frame-side blade and the shaft cylinder portion of the door-side blade (Patent Document 1).

[0005] Since the shaft portion of the pin that becomes the rotation center of the door-side blade with respect to the frame-side blade in the hinge disclosed in Patent Document 1 is arranged in front of the front surface portion of the door, the door can be opened by 180° or more at a position in front of the housing.

[0006] Furthermore, the hinge disclosed in Patent Document 1 allows the door to be moved to a pin retraction position perpendicular to the axial direction by a pin pushing operation, which involves moving the pin operating lever portion axially against the biasing force of the elastic member while the door is open. Thus, the door can be removed from the housing by performing a pin operation while the door is open. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2010-267898 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, the hinge disclosed in Patent Document 1 has a structure in which an elastic member is placed between the shaft cylinder portion of the door-side wing and the pin, and a movable groove portion for rotating and locking the operating lever portion of the pin is provided on the rear side of the door-side wing. As a result, the distance from the front of the door to the pivot point of the pin is large, and therefore the amount of forward (front) protrusion of the door-side wing relative to the front of the door is large. Consequently, the door-side wing protrudes conspicuously when viewed from the front of the cabinet, resulting in a problem of poor design.

[0009] Furthermore, when installing the door into the cabinet, if the operator forgets to rotate the pin's operating lever, which is inserted into the shaft cylinder of the frame-side wing, to insert it into the locking window of the door-side wing, the pin will be able to move to its retracted position. If the cabinet is used without noticing this condition, and strong external vibrations such as those caused by earthquakes occur, the pin may vibrate strongly against the shaft cylinder of the door-side wing, causing it to spontaneously move to its retracted position and detach from the shaft cylinder of the frame-side wing, potentially causing the door to detach and damage the server equipment.

[0010] In light of the above background, the problem that this invention aims to solve is to provide a cabinet in which the door can be opened 180° or more in front of the housing, and in which the door can be removed from the housing by operating the hinge pin while the door is open, in order to improve the design of the door-side wing of the hinge, and to prevent the door from coming off due to external vibrations such as earthquakes without requiring the operation lever to turn the pin after the pin has been connected between the shaft cylinder of the frame-side wing and the shaft cylinder of the door-side wing during the door hanging operation. [Means for solving the problem]

[0011] To achieve the above objectives, this invention provides a door, a housing, and a hinge connecting the door and the housing, wherein the hinge comprises a door-side wing attached to the door, a frame-side wing attached to the housing, a pin axially movable with respect to the axial cylinder portion of the frame-side wing and the axial cylinder portion of the door-side wing, and an elastic member that biases the pin in a direction that maintains a connected state between the axial cylinder portion of the frame-side wing and the axial cylinder portion of the door-side wing, wherein the axial portion of the pin, which is the central axis of relative rotation between the frame-side wing and the door-side wing, is located in front of the front portion of the door that is fastened to the door-side wing. In a cabinet in which the door can be moved to a pin retraction position that is removable in a direction perpendicular to the axial direction by a pin movement operation in which the operating lever portion of the pin is moved axially against the biasing force of the elastic member while the door is open, the elastic member is positioned between the frame side vane and the pin, and a lever receiving portion is provided on the door side that pivots when the door is closed to a lock position that restricts the operating lever portion from being moved to the pin retraction position when the door is connected (hereinafter referred to as Configuration 1).

[0012] According to the above configuration 1, in a cabinet in which the door can be opened more than 180° in a position in front of the housing, and the door can be removed from the housing by operating a pin while the door is open, the hinge pin and elastic member are concentrated on the frame-side wing of the hinge, so the amount of forward protrusion of the door-side wing of the hinge relative to the front of the door is reduced, making it possible to improve the design of the door-side wing. In addition, the lever receiver on the door side restricts the operating lever from moving to the pin retraction position, so during the door hanging operation, it is possible to prevent the door from coming off due to external vibrations such as earthquakes without having to turn the pin using the operating lever after the pin has been connected between the shaft cylinder of the frame-side wing and the shaft cylinder of the door-side wing.

[0013] In the above configuration 1, the shaft cylinder portion of the frame-side blade has a locking window portion that restricts the axial forward and backward movement of the operating lever portion when it is in the connected state, and when the operating lever portion is stopped in a position away from the locking window portion when it is in the connected state, the operating lever portion is pushed into the locking window portion by the lever receiving portion which rotates to the locked position (hereinafter referred to as configuration 2).

[0014] According to the above configuration 2, even if the pin-turning operation to insert the operating lever into the locking window is forgotten after the door has been hung up and connected, closing the door once will transfer the operating lever into the locking window. Furthermore, the axial movement of the operating lever can be restricted solely by the shape of the locking window on the housing side, and is not affected by the axial positional accuracy of the lever receiver on the door side, thus simplifying the manufacturing and assembly of the door-side components.

[0015] In the above configuration 2, a configuration (hereinafter referred to as configuration 3) can be adopted in which the engaging edge portion of the locking window portion that restricts the axial retraction movement of the operating lever portion is inclined toward the axial retraction side toward the direction toward disengaging from the locking window portion in the direction of the central axis.

[0016] In some cases, the door may be hung up with the pin's operating lever portion inserted into the locking window of the frame-side vane attached to the housing, and the pin's shaft portion protruding from the shaft cylinder portion of the frame-side vane. In this case, when attempting to fit the shaft cylinder portion of the door-side vane attached to the door onto the pin's shaft portion, the pin's shaft portion may be accidentally struck by the door, causing the pin to be pushed axially retracted due to the impact. According to the above configuration 3, when the pin's shaft portion is struck by the door as described above, the inclination of the engaging edge portion of the locking window portion guides the pin's operating lever portion to disengage from the locking window portion, thus preventing deformation of the pin.

[0017] In the above configuration 1, a configuration (hereinafter referred to as configuration 4) can be adopted in which the lever receiving portion rotates to the locked position facing the operating lever portion in the axial direction when the door is closed.

[0018] According to the above configuration 4, it is not necessary to form a locking window portion on the shaft cylinder portion of the frame-side vane as in the above configuration 2, and the pin turning operation can be eliminated.

[0019] In any one of the above configurations 1 to 4, a configuration (hereinafter referred to as configuration 5) can be adopted in which the door-side wing has a mounting surface fastened to the front surface of the door and a side end surface facing the shaft cylinder portion of the frame-side wing in a direction perpendicular to the axial direction, and the lever receiving portion is formed at the corner between the mounting surface and the side end surface.

[0020] According to the above configuration 5, it is not necessary to provide a lever receiving portion on the door, and the protrusion of the lever receiving portion from the side end face and mounting surface of the door-side wing is avoided, so the shape of the door-side wing does not become complicated by the lever receiving portion.

[0021] Also, in order to solve the above problems, the present invention includes a door-side blade attached to a door, a frame-side blade attached to a housing, a pin disposed axially movably with respect to the shaft cylinder portion of the frame-side blade and the shaft cylinder portion of the door-side blade, and an elastic member that biases the pin in a direction to maintain a connection state in which the pin extends across the shaft cylinder portion of the frame-side blade and the shaft cylinder portion of the door-side blade. The shaft portion of the pin, which is the center axis of the relative rotation between the frame-side blade and the door-side blade, is disposed in front of the front surface portion of the door that is fastened to the door-side blade. In a hinge that can move the door-side blade and the frame-side blade to a pin retracted position where they can be disassembled in a direction perpendicular to the axial direction by a pin moving operation that axially moves the operation lever portion of the pin against the biasing force of the elastic member, the elastic member is disposed between the frame-side blade and the pin, and the door-side blade has a lever receiving portion that pivots during closing rotation to a lock position that restricts the operation lever portion from moving to the pin retracted position in the connection state (hereinafter, this is referred to as Configuration 6).

[0022] If a door and a housing are connected with a hinge having the above Configuration 6, the cabinet according to the above Configuration 1 can be constructed without providing a lever receiving portion on the door.

[0023] In the above Configuration 6, the shaft cylinder portion of the frame-side blade has a locking window portion that restricts the axial forward and backward movement of the operation lever portion in the connection state. When the operation lever portion stops at a position outside the locking window portion in the connection state, a configuration (hereinafter, this is referred to as Configuration 7) can be adopted in which the operation lever portion is pushed into the locking window portion by the lever receiving portion that pivots to the lock position.

[0024] If a door and a housing are connected with a hinge having the above Configuration 7, the cabinet according to the above Configuration 2 can be constructed.

[0025] In the above-described configuration 7, in the locking window portion, an engaging edge portion that restricts the axial retreat movement of the operation lever portion is inclined toward the axial retreat movement side in a direction away from the locking window portion around the central axis (hereinafter, this is referred to as configuration 8). This configuration can be adopted.

[0026] If a hinge having the above-described configuration 8 is used to connect the door and the housing, the cabinet according to the above-described configuration 3 can be constructed.

[0027] In the above-described configuration 6, a configuration in which the lever receiving portion pivots during closing rotation to the lock position that faces the operation lever portion in the axial direction (hereinafter, this is referred to as configuration 9) can be adopted.

[0028] According to the above-described configuration 9, the cabinet according to the above-described configuration 4 can be constructed on the shaft cylinder portion of the frame side blade.

[0029] In any one of the above-described configurations 6 to 9, the door side blade has a mounting surface fastened to the front surface portion of the door and a side end surface facing the shaft cylinder portion of the frame side blade in a direction perpendicular to the axial direction, and the lever receiving portion is formed at a corner portion between the mounting surface and the side end surface (hereinafter, this is referred to as configuration 10). This configuration can be adopted.

[0030] If a hinge having the above-described configuration 10 is used to connect the door and the housing, the cabinet according to the above-described configuration 5 can be constructed.

Advantages of the Invention

[0031] As described above, by adopting the above-described configuration 1, in the cabinet that can open the door by 180° or more in a position in front of the housing and can remove the door from the housing by performing the pin operation of the hinge with the door open, the design property of the door side blade of the hinge is improved, and during the door hanging operation, after the pin is in a connected state spanning between the shaft cylinder portion of the frame side blade and the shaft cylinder portion of the door side blade, it is possible to prevent the door from coming off due to external vibrations such as an earthquake without requiring turning the pin using the operation lever portion. [Brief explanation of the drawing]

[0032] [Figure 1] A perspective view showing a cabinet according to the first embodiment as an example of this invention. [Figure 2] Plan view showing the cabinet door closed (Figure 1) [Figure 3] Plan view showing the cabinet door in the open position in Figure 1. [Figure 4] (a) is a plan view of the hinge in Figure 1, (b) is a front view of the hinge in Figure 1 (a), and (c) is a right side view of Figure 1 (b). [Figure 5] (a) is a partial diagram showing the hinge pin in Figure 1 in the retracted position, and (b) is a partial diagram showing the frame side wing in Figure 4(b). [Figure 6] A partial cross-sectional view showing the area around the operating lever in the axial direction when the hinge pin operation shown in Figure 1 is fully completed and the door is closed. [Figure 7] Figure 1 is a partial cross-sectional view showing the rotation of the lever receiver and operating lever when closing the door for the first time if the hinge pin operation is forgotten. [Figure 8] Figure 1 shows the locking structure when the door is closed, with the protrusions on the frame side wings and the edge of the door. [Figure 9] A plan view showing another example of the front part of the door that is fastened to the door-side wing in Figure 1. [Figure 10] A partial cross-sectional view of a cabinet and hinge according to a second embodiment of this invention, similar to Figure 7. [Figure 11] A perspective view of a cabinet according to the third embodiment of this invention, similar to Figure 1. [Figure 12] (a) is a partial cross-sectional view showing the closed state of the cabinet according to the third embodiment along the line XII-XII in Figure (b), and (b) is a diagram showing the locking structure in the closed state according to the third embodiment, similar to Figure 8. [Figure 13] A perspective view of a cabinet according to the fourth embodiment of this invention, similar to Figure 1. [Figure 14] Perspective view showing the door-side wing according to the fourth embodiment. [Figure 15] (a) is a partial cross-sectional view showing the open state of the cabinet according to the fourth embodiment along the line XV-XV in Figure (b), and (b) is a diagram showing the locking structure in the open state according to the fourth embodiment, similar to Figure 8. [Figure 16] A partial cross-sectional view showing the closed state of the cabinet according to the fourth embodiment, with the same cross-section as in Figure 15(a). [Modes for carrying out the invention]

[0033] A cabinet according to the first embodiment of this invention (hereinafter referred to as "this cabinet") will be described based on Figures 1 to 9 of the attached drawings.

[0034] The cabinet shown in Figures 1 to 3 comprises a door 100, a housing 110, and a hinge connecting the door 100 and the housing 110.

[0035] The housing 110 is a box-shaped structure with an entrance at the front, and is used, for example, to house electrical and electronic equipment. The door 100 is an opening / closing body supported by the housing 110 so as to have a predetermined closed position that covers the entrance of the housing 110 from the front, and to be opened to a predetermined angle from that closed position. The door 100 is openable and closable around a central axis that extends vertically in the housing 110. In Figures 2 and 3, the housing 110 with an entrance at the front is partially shown, showing one end on the left or right of the front frame portion 111 that forms the entrance, and the side plate portion 112 that is continuous therewith. Also, the door 100 that covers the entrance from the front is partially shown, showing one end on the left or right of the front portion 101 of the door 100, and the small end portion 102 that is continuous therewith. Mechanisms for maintaining the door 100 in the predetermined closed position relative to the housing 110, such as a latch mechanism, are not shown.

[0036] This hinge supports the door 100 so that it can open and close relative to the housing 110. The hinge comprises a door-side wing 10 attached to the door 100, a frame-side wing 20 attached to the housing 110, a pin 30 having a shaft portion 31 that serves as the central axis of rotation between the door-side wing 10 and the frame-side wing 20, and an elastic member 40 that biases the shaft portion 31 of the pin 30 in the axial direction. Here, the axial direction refers to the direction along the aforementioned central axis, and in the illustrated example, it coincides with the aforementioned vertical direction with respect to the door 100 and housing 110.

[0037] As shown in Figures 1 and 4, the door-side wing 10 seamlessly comprises a door-side mounting plate portion 11 and a shaft cylinder portion 12 that is continuous with one side of the door-side mounting plate portion 11. The door-side mounting plate portion 11 has a flat mounting surface 11a. In addition, a plurality of holes 11b intersecting the mounting surface 11a are formed in the door-side mounting plate portion 11. As shown in Figure 2, the door-side wing 10 is attached to the door 100 by fastening the mounting surface 11a of the door-side wing 10 to the front portion 101 of the door 100 with a plurality of screw members 51.

[0038] As shown in Figures 1 and 4, the shaft cylinder portion 12 of the door-side vane 10 has a pin hole into which one end of the shaft portion 31 of the pin 30 can be inserted in the axial direction, and the inner circumference of the pin supports one end of the shaft portion 31 in a direction perpendicular to the axial direction (hereinafter referred to as the axial radial direction). The axial length of the shaft cylinder portion 12 of the door-side vane 10 is shorter than the axial length of the door-side mounting plate portion 11.

[0039] The frame-side vane 20 seamlessly comprises a frame-side mounting plate portion 21, a side plate portion 22 extending forward from one side of the frame-side mounting plate portion 21, and a shaft cylinder portion 23 continuous with the front side of the side plate portion 22. The frame-side mounting plate portion 21 and the side plate portion 22 are provided in an angle plate shape that intersects each other at 90°. The frame-side mounting plate portion 21 has a mounting surface 21a formed in a planar shape. In addition, a plurality of holes 21b intersecting the mounting surface 21a are formed in the frame-side mounting plate portion 21. As shown in Figure 2, the frame-side vane 20 is attached to the housing 110 by fastening the mounting surface 21a of the frame-side vane 20 to the front frame portion 111 of the housing 110 with a plurality of screw members 52.

[0040] The side plate portion 22 is located on one side relative to the end portion 102 of the door 100. The shaft cylinder portion 23 of the frame side wing 20 has a hole into which the other end of the shaft portion 31 of the pin 30 can be inserted in the axial direction, and the other end of the shaft portion 31 is supported in the axial radial direction on its inner circumference. The axial length of the shaft cylinder portion 23 of the frame side wing 20 is set to be shorter than the axial length of the side plate portion 22.

[0041] As shown in Figures 4 and 5, the pin 30 is positioned to reciprocate by a predetermined stroke in the axial direction relative to the axial cylinder portion 23 of the frame-side vane 20 and the axial cylinder portion 12 of the door-side vane 10. The elastic member 40 biases the pin 30 in a direction that maintains the connection state (hereinafter simply referred to as "connection state") between the axial cylinder portion 23 of the frame-side vane 20 and the axial cylinder portion 12 of the door-side vane 10.

[0042] As shown in Figure 2, the shaft portion 31 of the pin 30 is positioned in front of the front portion 101 of the door 100. When the door 100 is in a predetermined closed position, the frame-side mounting plate portion 21 and the door-side mounting plate portion 11 are parallel and facing the other side (left and right). The door 100 can be opened up to 180° from the predetermined closed position. When the door 100 is opened 180°, as shown in Figure 3, the frame-side mounting plate portion 21 and the door-side mounting plate portion 11 are parallel, with the frame-side mounting plate portion 21 facing the other side (left and right) and the door-side mounting plate portion 11 facing one side (left or right).

[0043] Since the frame-side vanes 20 do not have a portion located on either the left or right side relative to the side plate portion 112 of the housing 110, other housings (not shown) can be placed adjacent to the side plate portion 112 of housing 110 without any gaps. Even when housings 110 are arranged in parallel in such close proximity, the door 100 can be opened 180° without interfering with adjacent housings or doors.

[0044] Furthermore, an annular sliding member (not shown) is positioned between the shaft cylinder portion 23 of the frame-side wing 20 and the shaft cylinder portion 12 of the door-side wing 10. The sliding member is fitted to the end of the shaft cylinder portion 12 of the door-side wing 10, and at the fitting portion, it is restricted to a state where it cannot rotate relative to the shaft cylinder portion 12. The sliding member is provided to allow the opposing ends of the shaft cylinder portion 23 to slide smoothly around the central axis.

[0045] Furthermore, to prevent the left or right end of the door-side mounting plate portion 11 from damaging the frame-side wing 20 when attempting to open the door 100 beyond 180°, a cushioning member may be attached to the side plate portion 22 of the frame-side wing 20.

[0046] As shown in Figures 1 and 4, the elastic member 40 consists of a coil spring positioned between the frame-side vane 20 and the pin 30. The axial cylindrical portion 23 of the frame-side vane 20 is a bottomed cylindrical shape that receives one end of the elastic member 40 in the axial direction. The other end of the elastic member 40 in the axial direction is supported by the other end of the stepped shaft portion 31. The elastic member 40 biases the shaft portion 31 of the pin 30 from inside the axial cylindrical portion 23 of the frame-side vane 20 towards inside the axial cylindrical portion 12 of the door-side vane 10.

[0047] The pin 30 has an operating lever portion 32 that protrudes from the shaft portion 31 in a direction perpendicular to the axial direction. The shaft portion 31 is made of a round bar and has a pin hole portion that extends in the radial direction at the middle of its axial length. The operating lever portion 32 consists of a spring pin that is press-fitted into the pin hole portion of the shaft portion 31.

[0048] The axial cylinder portion 23 of the frame-side vane 20 has a locking window portion 24 that extends in the direction of the central axis and is closed at one end in the direction of the central axis, a parallel window portion 25 that extends in the direction of the central axis and is closed at one end in the direction of the central axis at a position axially opposite to the locking window portion 24, and a crossing window portion 26 that spans between the locking window portion 24 and the parallel window portion 25. These locking window portion 24, parallel window portion 25 and crossing window portion 26 are in the shape of a series of slits and form a space that penetrates between the inner and outer circumference of the axial cylinder portion 23 of the frame-side vane 20 in a direction perpendicular to the central axis. These locking window portion 24, parallel window portion 25 and crossing window portion 26 are parts that form and guide the space necessary for moving and stopping the operating lever portion 32 along a predetermined path.

[0049] As shown in Figure 4, the locking window portion 24 consists of a notched portion that, when connected, restricts the axial forward and backward movement (upward and downward movement in the figure) of the operating lever portion 32 of the pin 30, and also restricts the rotation of the operating lever portion 32 toward one end in the circumferential direction around the central axis (clockwise in Figure 4(a)).

[0050] Of the locking window portion 24, the engaging edge portion 24a that restricts the axial retraction movement of the operating lever portion 32 consists of a helical portion that is inclined toward the axial retraction side toward the intersecting window portion 26 in the direction of the central axis. When a large pin load is applied that pushes the pin 30 toward the axial retraction side, the operating lever portion 32 is strongly pressed against the engaging edge portion 24a, and the inclination of the engaging edge portion 24a generates a component force that causes the operating lever portion 32 to rotate toward the intersecting window portion 26. Therefore, unless the rotation of the operating lever portion 32 is restricted, the pin load causes the operating lever portion 32 to retract toward the intersecting window portion 26 along the engaging edge portion 24a.

[0051] As shown in Figure 5(a), the parallel window portion 25 consists of a notched portion that restricts the axial movement of the operating lever portion 32 and restricts the rotation of the operating lever portion 32 toward one end in the circumferential direction around the central axis when the pin 30 is in the pin retracted position, where it has completely disengaged from the shaft cylinder portion 12 of the door-side wing 10.

[0052] As shown in Figures 4 and 5, the intersecting window section 26 forms the axial movement space for the operating lever section 32, which extends between the locking window section 24 and the parallel window section 25. The intersecting window section 26 provides linear guidance for the operating lever section 32 as it moves between the locking window section 24 and the parallel window section 25, and consists of slit sections that define the top dead center and bottom dead center of the stroke of the linear guidance.

[0053] The stroke over which the pin 30 can move axially relative to the shaft cylinder portion 23 of the frame-side vane 20 is the same as the stroke of the linear guide described above. When the operating lever portion 32 is in a state where it is abutting the slit end on the axially advancing side of the crossing window portion 26 against the biasing force of the elastic member 40, or in a state where it is in the locking window portion 24 (see Figure 4), the shaft portion 31 of the pin 30 is in an axial position corresponding to the connected state where it is axially protruding from the shaft cylinder portion 23 of the frame-side vane 20 and has entered the shaft cylinder portion 12 of the door-side vane 10. When the operating lever portion 32 is in a state where it is abutting the slit end on the axially retracting side of the crossing window portion 26, or in a state where it is in the parallel window portion 25, the shaft portion 31 of the pin 30 is in a pin retraction position where it has completely escaped from the shaft cylinder portion 12 of the door-side vane 10 (a position where it is fully retracted into the shaft cylinder portion 23 of the frame-side vane 20, see Figure 5(a)).

[0054] Thus, the hinge provided in this cabinet has a door-side wing 10 attached to the door 100, a frame-side wing 20 attached to the housing 110, a pin 30 that is axially movable relative to the shaft cylinder portion 23 of the frame-side wing 20 and the shaft cylinder portion 12 of the door-side wing 10, and an elastic member 40 that biases the pin 30 in a direction that maintains a connected state between the shaft cylinder portion 23 of the frame-side wing 20 and the shaft cylinder portion 12 of the door-side wing 10. The shaft portion 31 of the pin 30, which serves as the central axis of relative rotation, is positioned in front of the front portion 101 of the door 100 that is fastened to the door-side wing 10. By moving the operating lever portion 32 of the pin 30 axially against the biasing force of the elastic member 40, the door-side wing 10 and the frame-side wing 20 can be moved to a pin retraction position that allows them to be separated in a direction perpendicular to the axial direction, and the pin 30 can be moved to a locked state that maintains the pin retraction position.

[0055] The materials for the door-side wing 10 and the frame-side wing 20 are not particularly limited, but because the shape of the frame-side wing 20 is complex, it is preferable to form the frame-side wing 20 from resin. In the illustrated example, the door-side wing 10 and the frame-side wing 20 are integrally molded.

[0056] As shown in Figures 1, 6, and 7, the door 100 has a window portion 103 that forms a space between the hinge-side end portion 102 and the front portion 101. The window portion 103 is provided by partially cutting out the corner connecting the end portion 102 and the front portion 101 in the axial direction. Of the window portion 103, the portion facing the operating lever portion 32 in the axial radial direction and around the central axis direction (in the illustrated example, the cut-out edge of the front portion 101) serves as a lever receiving portion 104 for restricting the movement of the operating lever portion 32 to the pin retraction position. The lever receiving portion 104 pivots near the shaft cylinder portion 23 of the frame-side wing 20 when the door 100 is opened and closed.

[0057] The lever receiver 104 rotates to a locked position when the door is closed while connected, restricting the operating lever 32 from moving to the aforementioned pin retraction position (see Figure 7). When the operating lever 32 is in the locking window 24 and the lever receiver 104 is in the locked position, the operating lever 32 cannot disengage from the locking window 24 and enter the crossing window 26. On the other hand, when the door 100 is opened, the lever receiver 104 moves away from the operating lever 32 (see Figure 1), creating sufficient open space to perform a manual operation to move the operating lever 32 between the locking window 24 and the parallel window 25.

[0058] As shown in Figure 3, when removing the door 100 with the door 100 open, the operating lever portion 32 of the connected pin 30 shown in Figure 4 is rotated toward the crossing window portion 26 until it disengages from the locking window portion 24. Then, a pin-pushing operation is performed to move the crossing window portion 26 toward the axially retracted side against the biasing force of the elastic member 40, thereby moving the pin 30 to the pin-retracted position shown in Figure 5(a). This pin-pushing operation is performed until the operating lever portion 32 faces the parallel window portion 25 in the direction of the central axis. By rotating the operating lever portion 32 so that it enters the parallel window portion 25, the pin 30 can be moved to a locked state that maintains the pin-retracted position. As long as this locked state is maintained, the axial forward and backward movement of the operating lever portion 32 can be restricted by the parallel window portion 25. Here, by utilizing the biasing force of the elastic member 40 that has been charged by the pin-pushing operation, the engagement between the parallel window portion 25 and the operating lever portion 32 can be firmly maintained, so the locked state can be maintained even if the finger is released from the operating lever portion 32. Therefore, the operation of removing the door 100 in the open state shown in Figure 3, in a direction perpendicular to the axial direction, can be performed using both hands.

[0059] In the aforementioned locked state, the operation of rotating the operating lever portion 32 shown in Figure 5(a) toward the intersecting window portion 26 is performed to release the catch between the parallel window portion 25 and the operating lever portion 32. When the finger is released from the operating lever portion 32, the biasing force of the elastic member 40 moves the pin 30 from the pin retracted position toward the axially advanced side, and it abuts against the slit end on the axially advanced side of the intersecting window portion 26 and stops. Therefore, when attaching the door 100 to the housing 110, the axial cylinder portion 12 of the door-side wing 10 is placed on the axial cylinder portion 23 of the frame-side wing 20 in the orientation of the door 100 shown in Figure 3, with the axial cylinder portion 12 of the door-side wing 10 facing each other coaxially in the axial direction. In this state, simply by removing the operating lever portion 32, which is locked in place, from the parallel window portion 25, the pin 30 is connected to the axial cylinder portion 12 of the door-side wing 10 by a predetermined axial length. Subsequently, by performing a pin-turning operation (see Figure 5(b)) in which the operating lever portion 32 of the pin 30 located in the crossing window portion 26 is rotated toward the locking window portion 24 while the connection is made, it is possible to restrict the axial forward and backward movement of the operating lever portion 32 with the locking window portion 24.

[0060] As shown in Figures 1 and 7, the lever receiver 104 rotates around its central axis as part of the door 100 when the door is closed while connected. As shown in Figure 6, if the aforementioned pin turning operation is performed correctly and the operating lever portion 32 is fully engaged in the locking window portion 24, the lever receiver 104 shown in Figure 1 will not push the operating lever portion 32 when the door is closed, but it will rotate to a locked position (the position shown by the dashed line in Figure 7) that does not allow the operating lever portion 32 to move toward the crossing window portion 26. Therefore, the lever receiver 104 can restrict the operating lever portion 32, which is located in the locking window portion 24 when connected, from moving to the aforementioned pin retraction position.

[0061] On the other hand, if the aforementioned pin-turning operation is forgotten, the operating lever portion 32 will remain in a position where it is abutting against the slit end on the axially advancing side of the intersecting window portion 26 (see the operating lever portion 32 drawn with a solid line in Figure 7), and the door 100 shown in Figure 3 will be opened and closed. If the door 100 is closed once in this state as shown in Figure 2, the operating lever portion 32 located in the intersecting window portion 26 will be pushed into the locking window portion 24 by the lever receiver portion 104 which rotates in the direction of door closing rotation (see the operating lever portion 32 drawn with a dashed line in Figure 7). Therefore, in this case as well, the lever receiver portion 104 can restrict the operating lever portion 32 located in the locking window portion 24 in the connected state from moving to the aforementioned pin retraction position. Furthermore, as shown in Figures 2 and 3, when opening and closing the door 100, the operating lever portion 32 of the pin 30 on the housing 110 side does not rotate significantly with the door 100. As shown in Figure 7, the operating lever portion 32 only rotates slightly when it is inserted into the locking window portion 24 at the lever receiver portion 104. Therefore, the risk of damaging the wiring inside the housing 110 with the operating lever portion 32 during this rotation is very small.

[0062] As shown in Figures 1 and 7, the lever receiver 104 returns to the aforementioned locked position each time the door 100 is closed. Therefore, when server equipment is housed in the housing 110 shown in Figure 3 and the door 100 is closed as shown in Figure 2, the lever receiver 104 is always in the locked position. Consequently, even if the pin 30 vibrates axially relative to the shaft cylinder portion 23 of the frame-side vane 20 due to external vibrations such as an earthquake, and the operating lever portion 32 is guided toward the crossing window portion 26 by contact with the engaging edge portion 24a shown in Figures 4 and 7, it will not enter the crossing window portion 26 and reach the pin retraction position.

[0063] As mentioned above, there are cases where the pin is not operated with the frame-side wing 20's shaft cylinder portion 23 and the door-side wing 10's shaft cylinder portion 12 facing each other coaxially in the axial direction. Instead, the operating lever portion 32 is inserted into the locking window portion 24 of the frame-side wing 20 attached to the housing 110, and the shaft portion 31 is made to protrude from the shaft cylinder portion 23 of the frame-side wing 20 (see also Figure 5(b)) while the door 100 is being hung up as shown in Figure 3. In this case, when attempting to fit the door-side wing 10's shaft cylinder portion 12 onto the shaft portion 31, the door 100 may accidentally hit the shaft portion 31, causing the pin 30 to be pushed axially retracted due to the impact. When the shaft portion 31 is struck by the door 100, the inclination of the engaging edge portion 24a of the locking window portion 24 guides the operating lever portion 32 to disengage from the locking window portion 24, allowing it to enter the crossing window portion 26 and move toward the axial retraction side, thereby preventing deformation of the pin 30.

[0064] Furthermore, if the door 100, which is in a predetermined closed position, is allowed to be freely moved in the direction of the axial advance of the pin 30 relative to the housing 110, there is a concern that the pin 30 may escape from the shaft cylinder portion 12 of the door-side vane 10, causing the door 100 to fall and damage server equipment, etc. To eliminate such concerns, the side plate portion 22 of the frame-side vane 20 is provided with a projection 22a, as shown in Figures 2 and 8, so as to be able to lock the door 100 in the axial direction when it is in a predetermined closed position. When the door 100 is closed, the projection 22a enters the space formed by the window portion 103 and faces the portion on the edge portion 102 of the window portion 103 in the axial direction. In the event of the aforementioned unauthorized movement, the projection 22a can lock the portion on the edge portion 102 of the window portion 103 in the axial direction, preventing the door 100 from falling.

[0065] This cabinet is as described above (see Figures 1 to 7 as appropriate), and comprises a door 100, a housing 110, and a hinge connecting the door 100 and the housing 110, the hinge comprising a door-side wing 10 attached to the door 100, a frame-side wing 20 attached to the housing 110, a pin 30 axially movable relative to the shaft cylinder portion 23 of the frame-side wing 20 and the shaft cylinder portion 12 of the door-side wing 10, and the pin 30 spanning between the shaft cylinder portion 23 of the frame-side wing 20 and the shaft cylinder portion 12 of the door-side wing 10 The cabinet includes an elastic member 40 that biases the pin 30 in a direction that maintains the connected state, and the shaft portion 31 of the pin 30, which is the central axis of rotation of the frame-side vane 20 and the door-side vane 10, is positioned in front of the front portion 101 of the door 100, and the door 100 can be moved to a pin retraction position perpendicular to the axial direction by a pin movement operation in which the operating lever portion 32 of the pin 30 is moved axially against the biasing force of the elastic member 40 while the door 100 is open.Therefore, the cabinet can open the door 100 by more than 180° in a position in front of the housing 110, and the door 100 can be made removable from the housing 110 by operating the pin while the door 100 is open.

[0066] In this cabinet, the elastic member 40 is positioned between the frame-side wing 20 and the pin 30, and since the pin 30 and the elastic member 40 are concentrated on the frame-side wing 20, the amount of forward protrusion of the door-side wing 10 relative to the front surface 101 of the door 100 can be reduced, thereby improving the aesthetic design of the door-side wing 10.

[0067] Furthermore, this cabinet is equipped with a lever receiver 104 on the door side (door 100) that rotates when the door is closed to a locked position that restricts the operation lever 32 from moving to the pin retraction position when the door is connected. As a result, the lever receiver 104 on the door side restricts the operation lever 32 from moving to the pin retraction position. Therefore, when the door 100 is being hung up, it is possible to prevent the door 100 from coming off the housing 110 due to external vibrations such as earthquakes without requiring the operation lever 32 to turn the pin after the pin 30 has been connected between the shaft cylinder portion 23 of the frame side vane 20 and the shaft cylinder portion 12 of the door side vane 10.

[0068] Furthermore, cabinets for electrical and electronic equipment often use doors or enclosures with numerous perforations for heat dissipation to prevent a decrease in the performance of the housed electronic equipment. In such cabinets, even if the door is locked after closing and rotating, foreign objects such as processed piano wire may be inserted into the perforations, potentially operating the operating lever inside the cabinet. Even if a foreign object reaches the operating lever 32 through the perforations, the lever receiver 104 on the locked door side is in the locked position, so the foreign object cannot move the pin 30 to the retracted position. Therefore, when configuring a cabinet with multiple perforations formed in at least one of the door and enclosure, it becomes possible to prevent the locked door 100 from being illegally opened by foreign objects inserted through the perforations.

[0069] Furthermore, this cabinet has a locking window 24 that restricts the axial movement of the operating lever 32 when the shaft cylinder portion 23 of the frame-side vane 20 is connected. When the operating lever 32 is stopped in a position disengaged from the locking window 24 while connected, the lever receiver 104, which rotates to the locked position, pushes the operating lever 32 into the locking window 24. As a result, even if the aforementioned pin-turning operation is forgotten after connecting the door 100 during the door-hanging process, closing the door 100 once will move the operating lever 32 into the locking window 24. Therefore, the operating lever 32 will not unexpectedly move to the pin-retracted position due to any external force. In addition, the axial movement of the operating lever 32 can be restricted solely by the shape of the locking window 24 on the housing side, and is not affected by the axial position accuracy of the lever receiver 104 on the door side, thus simplifying the manufacturing and assembly of the door-side components.

[0070] Furthermore, in this cabinet, the engaging edge 24a of the locking window 24, which restricts the axial retraction of the operating lever portion 32, is inclined toward the axial retraction side in the direction of disengaging from the locking window 24 around the central axis. Therefore, when the door 100 is hung up with the operating lever portion 32 of the pin 30 inserted into the locking window 24 of the frame-side vane 20 attached to the housing 110, and the shaft portion 31 of the pin 30 protruding from the shaft cylinder portion 23 of the frame-side vane 20, if the shaft portion 31 of the pin 30 is accidentally struck by the door 100, the inclination of the engaging edge 24a of the locking window 24 guides the operating lever portion 32 of the pin 30 to disengage from the locking window 24, thus preventing deformation of the pin 30.

[0071] In this example, to accommodate situations where the cabinet units are adjacent to each other without any gaps in the left-right direction, the allowed opening angle of the door 100 from a predetermined closed position is set to 180°. However, it is also possible to set the door opening angle to a greater than 180°.

[0072] Furthermore, while this cabinet example illustrates the case where the mounting surface 11a of the door-side wing 10 is fastened to the front portion 101 located at the very front of the door 100, if there is no need to increase the opening angle, it is not necessary to fasten the door-side wing to the very front of the door. For example, as shown in Figure 9, the front portion 101 fastened to the door-side wing 10 may be formed at a position set back from the very front portion 105, thereby further suppressing the forward protrusion of the door-side wing 10 relative to the very front portion 105.

[0073] Furthermore, although this cabinet shows an example in which a lever receiving portion 104 is provided on the door 100, the lever receiving portion can be provided on the door side, that is, on the part that pivots integrally with the door side wing around the central axis of the hinge, and may be provided on the door side wing or on a member other than the door side wing (something fixed to the door). Figure 10 shows the main parts of the cabinet and hinge according to the second embodiment as an example of such modifications. Note that here we will only describe the changes from the first embodiment and use the same reference numerals for common components.

[0074] The door-side wing 10 of the hinge provided in the cabinet shown in Figure 10 has a side end face 13 that faces the shaft cylinder portion 23 of the frame-side wing 20 in the axial radial direction, and a lever receiving portion 14 formed at the corner between the side end face 13 and the mounting surface 11a. The axial radial distance between the door-side mounting plate portion 11 and the shaft cylinder portion 23 of the frame-side wing 20 is determined by the distance between the side end face 13 and the outer circumference of the shaft cylinder portion 23. The side end face 13 is planar along the axial direction. The lever receiving portion 14 has a chamfered shape that does not intersect with the virtual extension surfaces of the planar side end face 13 and the mounting surface 11a.

[0075] The aforementioned corner-shaped lever receiving portion 14 is located near the shaft cylinder portion 23 of the frame-side vane 20, and can therefore be used to restrict the operation lever portion 32. In other words, the door 100 has been modified so that there is no part that contacts the operation lever portion 32 before the lever receiving portion 14 when the door is closed and rotated. The lever receiving portion 14 is located opposite the operation lever portion 32, which is in an axial position corresponding to the connected state, in the axial radial direction and around the central axis direction, and can rotate when the door is closed to a lock position that restricts the operation lever portion 32 from moving to the pin retraction position when the door is connected.

[0076] Thus, the cabinet shown in Figure 10 has, in particular, a mounting surface 11a to which the door-side wing 10 is fastened to the front surface 101 of the door 100, and a side end surface 13 that faces the shaft cylinder portion 23 of the frame-side wing 20 in a direction perpendicular to the axial direction, and the lever receiving portion 14 is formed at the corner between the mounting surface 11a and the side end surface 13. As a result, it is not necessary to provide a lever receiving portion on the door 100, and the protrusion of the lever receiving portion 14 from the side end surface 13 of the door-side wing 10 and the mounting surface 11a is avoided, so the shape of the door-side wing 10 is not complicated by the lever receiving portion 14.

[0077] Furthermore, the hinge shown in Figure 10 has a lever receiver 14 that rotates when the door is closed to a locked position that restricts the operation lever portion 32 from moving to the pin retraction position when the door-side wing 10 is connected. By using this to connect the door 100 and the housing 110, it is possible to construct a cabinet that has a door opening angle of 180° or more, the ability to remove the door 100 by pin operation, the design of the door-side wing 10, and the ability to prevent the door from coming off if the pin operation is forgotten, similar to the first embodiment, without providing a lever receiver on the door 100.

[0078] Of course, by connecting the door 100 and the housing 110 using the hinge shown in Figure 10, even if the pin turning operation is forgotten, the lever receiving portion 14 can move the operating lever portion 32 into the locking window portion 24, the shape of the door-side wing 10 does not become complicated by the lever receiving portion 14, and a cabinet can be constructed that prevents deformation of the pin 30 when the shaft portion 31 of the pin 30 is struck by the door 100.

[0079] Furthermore, if the aforementioned pin-turning operation is forgotten, it is possible to restrict the movement of the operating lever to the pin-retracted position by positioning the lever receiver axially retracted relative to the operating lever. However, in this case, the lever receiver must be axially opposed to the operating lever in the locked position, and consequently, the lever receiver of the door-side wing must protrude axially from the door-side mounting plate.

[0080] In the embodiments described above, examples were shown in which a locking window portion 24 is formed on the frame-side wing 20, but it is also possible to omit the locking window portion 24. A third embodiment as an example of this is shown in Figures 11 to 12. Here, only the changes from the first embodiment are described, and the same reference numerals are used for common components.

[0081] In the third embodiment, the axial cylinder portion 23 of the frame-side vane 20 does not have the locking window portion 24 of the first embodiment (see also Figure 1). Instead, it has a horizontal window portion 27 that extends in the direction of the central axis and is closed at one end in the direction of the central axis, and a vertical window portion 28 that intersects the other end opposite to the one end of the horizontal window portion 27 in the direction of the central axis. The closed end of the horizontal window portion 27 is changed to the end on the door 100 in the direction of opening. The horizontal window portion 27 consists of a notched portion that can restrict the axial movement and rotation toward one end in the direction of the central axis of the operating lever portion 32 when the pin 30 is in the pin retracted position. The vertical window portion 28 consists of a slit portion that provides a linear guide that guides the operating lever portion 32 in the axial direction and determines the top dead center and bottom dead center of the stroke of the linear guide. The stroke by which the pin 30 can move axially relative to the axial cylinder portion 23 of the frame-side vane 20 is the same as the stroke of the linear guide described above, as in the first embodiment. In other words, during the lifting operation of the door 100, the operating lever 32 is rotated from the horizontal window 27 to the vertical window 28, and when the finger is released from the operating lever 32, the biasing force of the elastic member 40 causes the pin 30 to abut against the slit end on the axially advancing side of the vertical window 28 from the pin retraction position and stop, thus connecting. The lifting operation is completed without having to rotate the operating lever 32 to turn the pin at that stopping position.

[0082] The lever receiving portion 106 is the part of the window portion 103 of the door 100 that rotates to a locked position facing the operating lever portion 32 in the axial direction when the door is closed, as shown in Figure 12 (in the illustrated example, the edge on the axially retracted side of the window portion 103). When the door 100 is opened and closed in the connected state shown in Figure 11, the door side of the door 100, including the window portion 103, does not come into contact with the operating lever portion 32 which is abutting the slit end of the vertical window portion 28 due to the biasing force of the elastic member 40. Therefore, the lever receiving portion 106 of the door 100 does not push the operating lever portion 32 in the closing rotation direction when the door is closed, but rotates to a locked position so as to face the axially retracted side of the operating lever portion 32 each time the door 100 is closed. Therefore, not only when the door 100 is in the closed position at a predetermined closed position, but also when it is in the partially closed position at an open angle where a lock position is established between the operating lever portion 32 and the lever receiving portion 106, the pin 30 cannot move to the pin retraction position on its own due to the restriction of the lever receiving portion 106 of the door 100, such as during an earthquake.

[0083] As described above, in the cabinet according to the third embodiment, a lever receiving portion 106 is provided on the door side (door 100) that pivots to a locked position axially opposite to the operating lever portion 32 when the door is closed. Therefore, it is not necessary to form a locking window portion on the axial cylinder portion 23 of the frame side vane 20 as in the first embodiment, and the pin turning operation can be eliminated. In the third embodiment, an example is shown in which the lever receiving portion 106 is formed on the door 100, but it is also possible to form it on the frame side vane. A fourth embodiment as an example is shown in Figures 13 to 16. Here, only the changes from the third embodiment are described, and the same reference numerals are used for common components.

[0084] The door-side wing 10 according to the fourth embodiment has a lever receiving portion 15 at a position that overlaps in the axial direction with the space formed by the window portion 103 of the door 100. The lever receiving portion 15 is made up of the axially retracted end face of a notch formed at the corner between the mounting surface 11a and the side end face 13 of the door-side wing 10. The lever receiving portion 15 is a flat surface that extends in the axial direction at a position higher in the axial direction than the axially retracted edge (lower end edge) of the window portion 103. The mounting surface 11a and the side end face 13 of the door-side wing 10 are extended in order to position the lever receiving portion 15 in a position that overlaps with the window portion 103. The mounting surface 11a is extended toward the side approaching the shaft cylinder portion 23 of the frame-side wing 20, and the side end face 13 is extended in a curved shape along the shaft cylinder portion 23 so as not to interfere with the shaft cylinder portion 23 of the frame-side wing 20.

[0085] In the connection state shown in Figure 13, even when the door 100 is opened or closed, the door side, including the door-side vane 10 and lever receiver 15, does not come into contact with the operating lever portion 32 which is abutting against the slit end of the vertical window portion 28 due to the biasing force of the elastic member 40. Therefore, the lever receiver 15 of the door-side vane 10 does not push the operating lever portion 32 in the closing rotation direction when the door is closed, but each time the door 100 is closed, it rotates to a locked position so that it faces the axially retracted side of the operating lever portion 32 at a position higher in the axial direction than the axially retracted edge (lower edge) of the window portion 103. For this reason, when the door 100 is in the closed state described above, and when it is in a partially closed state at an opening angle where the locked position is established between the operating lever portion 32 and the lever receiver 15, the pin 30 cannot escape to the pin retracted position on its own due to an earthquake or the like, due to the restriction of the lever receiver 15 of the door-side vane 10.

[0086] Thus, in the cabinet according to the fourth embodiment, a lever receiving portion 15 is provided on the door-side vane 10 that pivots to a locked position axially opposite to the operating lever portion 32 when the door is closed. Therefore, it is not necessary to form a locking window portion on the axial cylinder portion 23 of the frame-side vane 20 as in the first embodiment, eliminating the need for pin turning. Furthermore, since the lever receiving portion 15 is formed at the corner between the mounting surface 11a and the side end surface 13, it is not necessary to provide a lever receiving portion on the door 100, thus avoiding the lever receiving portion 15 protruding from the side end surface 13 and mounting surface 11a of the door-side vane 10.

[0087] The embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. Accordingly, the scope of the invention is indicated by the claims and all modifications within the meaning and scope equivalent to the claims are intended.

[0088] In the embodiments disclosed herein, an example is shown in which a window is provided by partially cutting out the corner connecting the end portion and the front portion of the door in the axial direction. However, unlike Patent Document 1, this invention does not require the operating lever portion to protrude through from one side of the door to the other. For example, in the fourth embodiment, instead of cutting out the corner connecting the end portion 102 and the front portion 101 of the door to provide a window 103, the corner may be receded and deformed so as not to interfere with the operating lever portion 32 or the protruding portion 22a when the door 100 is opened and closed. The same applies to other embodiments. [Explanation of symbols]

[0089] 10 Door-side wing 11a Mounting surface 12 Shaft cylinder part 13 Side end face 14, 15, 104, 106 Lever receiving part 20 Frame side wing 23 Shaft cylinder part 24 Locking window section 24a Engagement edge 30 pins 31 Shaft 32 Operating lever section 40 Elastic members 100 doors 101 Front part 110 cabinets

Claims

1. It comprises a door, a housing, and a hinge connecting the door and the housing. The hinge comprises a door-side wing attached to the door, a frame-side wing attached to the housing, a pin axially movable with respect to the shaft cylinder portion of the frame-side wing and the shaft cylinder portion of the door-side wing, and an elastic member that biases the pin in a direction that maintains a connected state between the shaft cylinder portion of the frame-side wing and the shaft cylinder portion of the door-side wing. The shaft portion of the pin, which serves as the central axis of rotation between the frame-side wing and the door-side wing, is positioned in front of the front portion of the door that is fastened to the door-side wing. In a cabinet in which, with the door open, the door can be moved to a pin retraction position that allows it to be removed in a direction perpendicular to the axial direction by a pin movement operation in which the pin operating lever portion is moved axially against the biasing force of the elastic member, The elastic member is positioned between the frame-side wing and the pin. A cabinet characterized in that a lever receiving portion is provided on the door side, which rotates when the door is closed to a locked position that restricts the operation lever portion from moving to the pin retraction position when the door is connected.

2. The shaft cylinder portion of the frame-side vane has a locking window portion that restricts the axial forward and backward movement of the operating lever portion when it is in the connected state. The cabinet according to claim 1, wherein if the operating lever portion is stopped in a position detached from the locking window portion in the connected state, the operating lever portion is pushed into the locking window portion by the lever receiving portion which rotates to the locked position.

3. The cabinet according to claim 2, wherein the engaging edge of the locking window portion that restricts the axial retraction movement of the operating lever portion is inclined toward the axial retraction side toward the direction toward disengaging from the locking window portion in the direction of the central axis.

4. The cabinet according to claim 1, wherein the lever receiving portion pivots to the locked position when the door is closed, facing the operating lever portion in the axial direction.

5. The door-side wing has a mounting surface that is fastened to the front surface of the door, and a side end surface that faces the axial cylinder portion of the frame-side wing in a direction perpendicular to the axial direction. The cabinet according to any one of claims 1 to 4, wherein the lever receiving portion is formed at the corner between the mounting surface and the side end surface.

6. The device comprises a door-side vane attached to a door, a frame-side vane attached to a housing, a pin axially movable with respect to the shaft cylinder portion of the frame-side vane and the shaft cylinder portion of the door-side vane, and an elastic member that biases the pin in a direction that maintains a connected state between the shaft cylinder portion of the frame-side vane and the shaft cylinder portion of the door-side vane. The shaft portion of the pin, which serves as the central axis of rotation between the frame-side wing and the door-side wing, is positioned in front of the front portion of the door that is fastened to the door-side wing. In a hinge in which the door-side wing and the frame-side wing can be moved to a pin-retracted position that allows them to be separated in a direction perpendicular to the axial direction by a pin-movement operation that moves the pin's operating lever portion in the axial direction against the biasing force of the elastic member, The elastic member is positioned between the frame-side wing and the pin. A hinge characterized in that the door-side vane has a lever receiving portion that rotates when the door is closed to a locked position that restricts the operation lever portion from moving to the pin retraction position when the door is connected.

7. The shaft cylinder portion of the frame-side vane has a locking window portion that restricts the axial forward and backward movement of the operating lever portion when it is in the connected state. The hinge according to claim 6, wherein when the operating lever portion is stopped in a position detached from the locking window portion in the connected state, the operating lever portion is pushed into the locking window portion by the lever receiving portion which rotates to the locked position.

8. The hinge according to claim 7, wherein the engaging edge of the locking window portion that restricts the axial retraction movement of the operating lever portion is inclined toward the axial retraction side toward the direction toward disengaging from the locking window portion in the direction of the central axis.

9. The hinge according to claim 6, wherein the lever receiving portion pivots during door closing rotation to the locked position which faces the operating lever portion in the axial direction.

10. The door-side wing has a mounting surface that is fastened to the front surface of the door, and a side end surface that faces the axial cylinder portion of the frame-side wing in a direction perpendicular to the axial direction. The hinge according to any one of claims 6 to 9, wherein the lever receiving portion is formed at the corner between the mounting surface and the side end surface.

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