JP4488925B2 - cabinet - Google Patents

Description

  The present invention relates to a cabinet that prevents a door from closing when unlocked.

  A conventional cabinet will be described with reference to the drawings. FIG. 5 is an explanatory diagram of a cabinet for high-voltage underground distribution lines as an example of a cabinet, FIG. 5 (a) is a perspective plan view, FIG. 5 (b) is a perspective side view, and FIG. 5 (c) is a door removed. FIG. FIG. 6 is an explanatory view of a conventional locking metal fitting, FIG. 6 (a) is a plan view, and FIG. 6 (b) is an explanatory view of a movement range of the bag.

  As shown in FIGS. 5A, 5 </ b> B, and 5 </ b> C, the high-voltage underground power distribution cabinet 1000 includes a cabinet 100 ′ and a switch 200. The cabinet 100 ′ further includes a lock fitting 10 ′, a cabinet body 20, and a door 30. A switch 200 is accommodated in the cabinet body 20. The cabinet body 20 is pivotally supported by a hinge (not shown) so that the door 30 can be opened and closed on the left side. Further, as shown in FIGS. 5A and 5B, locking metal fittings 10 ′ are arranged at two upper and lower locations on the center side of the door 30, and the door 30 is locked to the cabinet body 20.

As shown in detail in FIGS. 6 (a) and 6 (b), this locking fitting 10 'is formed with a collar 11, a stopper 12, and a keyhole 13a formed with a collar body 11a and an L-shaped locking portion 11b. A rotation screw 13, a pair of nuts 14, a pair of rod fixing nuts 15, and a rotation stopper 16 are provided. And it locks to the collar receiver 21 integrally formed in the cabinet main body 20. FIG.
The hook 11 is sandwiched between a pair of hook fixing nuts 15 and fixed to the rotating screw 13, and the hook 11 is also rotated integrally by the rotation of the rotating screw 13. The rotating screw 13 is screwed into a pair of nuts 14. One of the nuts 14 is fixed to a rotation stopper 16 that is prevented from moving with respect to the door 30, and the rotation screw 13 rotates with reference to the pair of nuts 14. As shown in FIG. 6 (b), the flange 11 fixed to the rotating screw 13 rotates once with the stopper 12 as a starting point when there is no restriction, but usually from the unlocked state to the locked state. Move the range.

Next, the locking operation will be described with reference to the drawings. FIG. 7 is an explanatory view of the movement of the heel, FIG. 7 (a) is a diagram showing the unlocked state, FIG. 7 (b) is a diagram showing the locked state, and FIG. 7 (c) is a diagram showing the downward state. . These drawings are enlarged views of part A in FIG.
In the unlocked state, as shown in FIG. 7A, the collar 11 comes into contact with the stopper 12 and the L-shaped locking portion 11 b of the collar 11 is detached from the collar receiver 21. At this time, the stopper 12 is stable with the collar 11 leaning against it.
In the locked state, as shown in FIG. 7 (b), the L-shaped locking portion 11 b of the flange 11 has entered the flange receiver 21. At the time of locking, it is stable with the hook 11 leaning against the hook receiver 21.

The locking operation will be described. When locking is performed after installation of the cabinet 100 ′ or after maintenance inspection, a maintenance worker or the like inserts a special tool or a flat-blade screwdriver that fits into the keyhole 13 a after the door 30 is closed, and turns the screw. If 13 is rotated, as shown in FIG.7 (b), the L-shaped latching | locking part 11b will enter into the collar receiver 21, and will be in a locked state. In the locked state, the door 30 cannot be opened and closed.
The prior art of the cabinet 100 ′ is such.

  As another conventional technique, for example, Patent Document 1 (Japanese Patent No. 2821380, name of invention “cabinet”) is known. In this prior art, the door is pivotally supported by hinges at both right and left ends, and the upper end on the center side of the door when the door is closed in a double-open cabinet that locks the upper and lower ends of the closed door to the cabinet body. Between the bracket and the cabinet body, and is mounted between the engagement bracket and the cabinet body side. The cabinet includes a spring that biases backward.

Japanese Patent No. 2821380 (paragraph numbers 0006 to 0011, FIGS. 1 to 9)

  In the prior art cabinet 100 ′ shown in FIGS. 5 to 7, various operations are generally performed with the door 30 opened at the time of inspection after installation of the cabinet or normal maintenance inspection. When the door 30 is shaken by mistake during such work (for example, when the tool storage band attached to the operator's waist collides with the door 30), the vibration of the door 30 causes the lock 10 '. 7 (a) may be rotated in the direction of arrow a, and further rotated in the direction of arrow b in FIG. 7 (c) to rotate the collar 11 to a downward state. It was. If the door 30 is closed and locked in such a situation, for example, the door 11 is further rotated in the direction b from the state of FIG. For this reason, the operator may mistakenly be locked and leave without notice. In this way, there is a risk of misunderstanding that it is locked although it is not locked.

  When the door is not locked, the door 30 is pushed by a strong wind, or a child or the like leans on the road, and the cabinet is damaged due to excessive turning of the door. There is also a possibility that the storage device is pushed by the door 30 and is damaged. In this case, repair is necessary, but large repair work such as on-site welding work is extremely difficult, and improvement measures have been demanded.

  On the other hand, when the door is not locked, the door 30 is blown and opened by a strong wind, and wind, rain, or snow may enter and damage internal equipment. There was also a request to avoid as much as possible replacement of internal equipment at the installation site. In addition, when the door 30 is opened, the high-voltage charging unit is exposed to the outside, and there is a risk of exposing surrounding people to danger.

  Further, when the ridge 11 is in the downward state in FIG. 7C, for example, an internal device such as the switch 200 and a part of the ridge 11 interfere with each other when the door 30 is closed. When closed, the collar 11 collides with the internal device, and both the internal device and the lock fitting 10 'may be damaged. Further, in order to avoid collision, it is a design restriction to prevent an interference part from occurring, and there is a problem that miniaturization and the like are hindered.

Further, the cabinet of Patent Document 1 is a locking mechanism including a pressure releasing mechanism and has an advantage that the door does not open even when the internal pressure is increased, but the engaging pin is inserted and removed. There has been a demand for a locking mechanism that does not involve insertion and removal, such as the locking mechanism 10 ′ shown in FIGS.
Furthermore, in order to avoid significant design changes, there has been a demand to utilize the configuration of the prior art as much as possible.

  Therefore, the present invention has been made to solve the above-described problems, and its purpose is to ensure that the door is not closed by a simple mechanism so that the door is not closed when the bag is accidentally turned downward. Is to provide a cabinet to be played.

The cabinet according to claim 1 of the present invention is:
In a cabinet having a door that is supported so as to be openable and closable with respect to the cabinet body, and a locking bracket that locks the closed door to the hook receiver of the cabinet body.
This locking bracket is
A rotating part supported rotatably with respect to the door;
A hook having a locking part which is adapted to rotate together with the rotary part and is inserted into the hook receiver of the cabinet body;
A rod-shaped stopper provided on the door;
A pin is provided, and a downward-preventing bracket that is pivotally supported by the stopper,
With
When the downward-preventing bracket is stopped at the rotation position by rotation, the pin is removed from the rotation path of the heel so that the heel can freely rotate, and when stopped at the downward-prevention position by rotation, the pin is It is characterized in that it appears on the rotating path to prevent the downward movement of the bag and to make the cabinet body and the bag collide when the door is closed.

A cabinet according to claim 2 of the present invention is
The cabinet of claim 1,
The downward-preventing metal fitting is characterized in that the position is determined by contacting the rotational portion at the rotational position and the downward-preventing position.

A cabinet according to claim 3 of the present invention is:
The cabinet according to claim 2,
The downward-preventing metal fitting is characterized in that a force that abuts on the rotating portion is applied by a force that attempts to rotate by its own weight at the rotating position and the preventing position.

  According to the cabinet of the present invention, it is possible to provide a cabinet that is securely locked by a simple mechanism so that the door is not closed when the bag is accidentally turned downward.

The best mode for carrying out the cabinet of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a cabinet of this embodiment, FIG. 1 (a) is a perspective plan view, and FIG. 1 (b) is a front view. In addition, the structure which overlaps with a prior art attaches | subjects the same code | symbol, and demonstrates easily.
As shown in FIGS. 1A and 1B, the cabinet 100 includes a lock fitting 10, a cabinet body 20, and a door 30. The door 30 can be opened and closed as indicated by the arrow A direction. The cabinet 100 can be applied to various devices. For example, in the case of a high voltage underground distribution cabinet, a switch 200 is accommodated in the cabinet body 20 as shown in FIG.

  Thus, compared with the prior art, although the cabinet 100 differs in the structure of the locking metal fitting 10, the other cabinet main body 20 and the door 30 are the same structures, and the overlapping description is abbreviate | omitted. Such locking metal fittings 10 are arranged at two locations on the upper and lower sides of the door 30, and the door 30 is locked to the cabinet body 20.

  Then, the locking metal fitting 10 of this form is demonstrated. FIG. 2 is an explanatory view of a locking metal fitting mounted on the cabinet of this embodiment, FIG. 2 (a) is a plan view, and FIG. 2 (b) is an explanatory view of a movement range of the heel and the downward-preventing metal fitting. FIG. 3 is an explanatory view of the downward-preventing metal fitting and the ridge, FIG. 3 (a) is an explanatory perspective view of the unlocked state, and FIG. 3 (b) is an explanatory perspective view of the downward-preventing state. In addition, about the structure which overlaps with the locking metal fitting 10 'of a prior art, the same code | symbol is attached | subjected and description is abbreviate | omitted and it demonstrates focusing on a difference especially.

  As shown in detail in FIGS. 2 (a), 2 (b) and 3 (a), the locking metal fitting 10 of this embodiment has a flange 11 formed with a flange main body 11a and an L-shaped locking portion 11b, and a stopper 12. , A rotation screw 13 in which a keyhole 13 a is formed, a pair of nuts 14, a pair of hook fixing nuts 15, and a rotation stopper 16. And it locks to the collar receiver 21 integrally formed in the cabinet main body 20. FIG. Up to this point, the configuration is the same as that of the prior art. This embodiment is different in that a downward-preventing metal fitting 17 is provided.

As shown in FIGS. 2A and 2B and FIG. 3A, the downward-preventing metal fitting 17 includes a support portion 17a, a main body 17b, an L-shaped piece 17c, and a pin 17d.
The support portion 17a has a function of being rotatably supported with respect to the stopper 12, and specifically, is a cylindrical slide bearing portion that is inserted into the stopper 12 that is a round bar. As described above, since the stopper 12 determines the movement limit of the flange 11, the support portion 17 a is not located at a location where the flange 11 contacts. In this embodiment, as shown in FIG. 2A, the support portion 17a is disposed at a position in contact with the door 30 (the base side of the stopper 12), and the flange 11 is disposed at a position away from the door 30 (the front end side of the stopper 12). It is arranged to eliminate the interference between the two. In addition, in order to ensure rotation, the support part 17a is good to use the member which is hard to rust, such as resin, an oil-containing member, and stainless steel, and has high sliding performance.

The support portion 17a is provided with a main body 17b.
The L-shaped piece 17c is connected to the main body 17b, and particularly indicates an L-shaped bent portion.
The pin 17d protrudes from the L-shaped piece 17c on the side away from the door 30 (the front end side of the stopper 12) as shown in FIG. 2A, and is seen from the plane as shown in FIG. A part of the ridge 11 overlaps.

  Next, door operation using this downward-preventing metal fitting will be described with reference to the drawings. FIG. 4 is an operation explanatory view of the locking metal fitting, FIG. 4 (a) is an explanatory view of the unlocked state, FIG. 4 (b) is an explanatory view of the downward state, and FIG. FIG. 4D is an explanatory view of the downward-preventing state.

The downward-preventing metal fitting 17 is viewed from the door 30 side in the direction of arrow B as shown in FIG. 2B, and viewed from the cabinet body 20 side in the direction of arrow D as shown in FIG. 3A. Rotate. Further, the bag 11 also rotates in the direction of arrow C as shown in FIG. Such a downward-preventing metal fitting 17 is configured to stably stop at a position as shown in FIGS. 3A and 4A (because the hook 11 is rotatable, Called). At this time, as shown in FIG. 4A, the body 17 b is subjected to its own weight to generate a moment in the direction of arrow E, and the body 17 b is stable in a state where it is in contact with the rotating screw 13.
Further, the downward-preventing metal fitting 17 is configured to stably stop at the positions shown in FIGS. 3A, 3B, 4C, and 4D (the downward direction of the hook 11). This is referred to as the downward-preventing position. At this time, as shown in FIG. 4C, the body 17 b is subjected to its own weight to generate a moment in the direction of the arrow G, and the body 17 b is stabilized in a state where it is in contact with the rotating screw 13. In this way, the rotation range of the downward-preventing metal fitting 17 is determined.

Next, an operation using such a locking metal fitting 10 will be described.
When a maintenance worker or the like inserts a special tool or a flat-blade screwdriver that fits into the keyhole 13a into the cabinet 100 in a locked state as shown in FIG. The L-shaped locking portion 11b is detached from the receiver 21, and the unlocked state is obtained as shown in FIGS. 2 (b) and 4 (a). In the unlocked state, the door 30 can be opened and closed.

  Then, the door 30 is opened. At this time, if nothing is done, the door 30 may be vibrated during the operation, which may result in a downward state as shown in FIG. Therefore, a downward prevention process is performed when the door 30 is opened. As shown in FIG. 3A, the downward-preventing metal fitting 17 is rotated in the direction of arrow D from the rotational position (see FIG. 4A) to the downward-preventing position (in the direction of arrow G in FIG. 4C). (See Rotation Reference). The pin 17d appears on the rotation path of the rod 11 and enters a downward-preventing state where the pin 17d stops at the downward-preventing position that prevents the downward movement of the rod 11. A maintenance worker or the like performs maintenance work in this state.

  Under such circumstances, a maintenance worker or the like accidentally collides with the door 30, and the hook 11 rotates from the state shown in FIG. 4C in the direction of arrow H as shown in FIG. Even if it becomes the downward prevention state as shown in b), the pin 17d receives the collar 11 and enters the downward prevention state. And even if the door 30 is closed without noticing after the work is completed, as shown in FIG. 2 (b), the hook 30 collides with the hook receiver 21 of the cabinet body 20, so that the door 30 is not closed. As a result, the maintenance worker recognizes that the rod 21 has rotated, and then returns the rod 11 again (the state shown in FIG. 4C), and then returns the downward-preventing metal fitting 17 (the state shown in FIG. 4A), and the pin The door 30 is closed after the door 17d is released from the rotation path of the rod 11 to be unlocked. Thus, the situation where the door 30 is accidentally closed by the downward-preventing metal fitting 17 is avoided.

  In this description, it has been described that the scissors 11 are in the state shown in FIG. 4C during the maintenance work. However, the scissors may be in the downward-preventing state in FIG. 4D during the maintenance work. In either case, the door 30 can be prevented from being accidentally closed during the work.

Such a cabinet 100 has the following advantages.
(1) The maintenance worker can securely lock the door 30 of the cabinet 100. Therefore, the cabinet 100 and the equipment inside the cabinet 100 are securely protected.
(2) In the state where the cage 11 is in the downward state as shown in FIG. 4B, even when the internal device such as the switch 200 and a part of the cage 11 interfere with each other when the door 30 is closed, In this embodiment, since the state is prevented from being directed downward when an abnormality occurs, there is no possibility of damage to internal devices. Furthermore, since there is no interference, design restrictions are eliminated, and the cabinet can be downsized.
(3) Compared with the prior art shown in FIGS. 5 to 7, it is only necessary to add a downward-preventing metal fitting, and the configuration of the prior art can be utilized as much as possible.

BRIEF DESCRIPTION OF THE DRAWINGS It is the schematic of the cabinet of the best form for implementing this invention, Fig.1 (a) is a perspective top view, FIG.1 (b) is a front view. It is explanatory drawing of the locking metal fitting mounted in the cabinet of the best form for implementing this invention, FIG. 2 (a) is a top view, FIG.2 (b) is explanatory drawing of the movement range of a ridge and a downward prevention metal fitting It is. FIG. 3A is a perspective explanatory view of the unlocked state, and FIG. 3B is a perspective explanatory view of the downward-prevented state. FIG. 4A is an explanatory diagram of the unlocked state, FIG. 4B is an explanatory diagram of the downward state, FIG. 4C is a movement explanatory diagram of the downward-preventing metal member, and FIG. (D) is explanatory drawing of a downward prevention state. It is explanatory drawing of the cabinet for high voltage underground distribution lines which is an example of a cabinet, FIG.5 (a) is a perspective top view, FIG.5 (b) is a perspective side view, FIG.5 (c) is the front view which removed the door It is. It is explanatory drawing of the locking metal fitting of a prior art, Fig.6 (a) is a top view, FIG.6 (b) is explanatory drawing of the movement range of a collar. FIGS. 7A and 7B are diagrams illustrating the movement of the bag, FIG. 7A is a diagram illustrating the unlocked state, FIG. 7B is a diagram illustrating the locked state, and FIG. 7C is a diagram illustrating the downward state.

Explanation of symbols

100: Cabinet 10: Locking bracket 11: 鉤 11a: 鉤 main body 11b: L-shaped locking portion 12: Stopper 13: Rotating screw 13a: Key hole 14: Nut 15: 鉤 fixing nut 16: Rotating stopper 17: Downward Prevention bracket 17a: Support portion 17b: Main body 17c: L-shaped piece 17d: Pin 20: Cabinet main body 21: Reed holder 30: Door 200: Switch

Claims (3)

In a cabinet having a door that is supported so as to be openable and closable with respect to the cabinet body, and a locking bracket that locks the closed door to the hook receiver of the cabinet body.
This locking bracket is
A rotating part supported rotatably with respect to the door;
A hook having a locking part which is adapted to rotate together with the rotary part and is inserted into the hook receiver of the cabinet body;
A rod-shaped stopper provided on the door;
A pin is provided, and a downward-preventing bracket that is pivotally supported by the stopper,
With
When the downward-preventing bracket is stopped at the rotation position by rotation, the pin is removed from the rotation path of the heel so that the heel can freely rotate, and when stopped at the downward-prevention position by rotation, the pin is A cabinet that appears on the rotation path to prevent the downward movement of the bag and to cause the cabinet body and the bag to collide when the door is closed. The cabinet of claim 1,
The cabinet is characterized in that the position of the downward-preventing metal fitting is determined by coming into contact with the rotational portion at the rotational position and the downward-preventing position. The cabinet according to claim 2,
The cabinet according to claim 1, wherein the downward-preventing metal fitting is provided with a force that abuts on the rotating portion by a force that attempts to rotate by its own weight at the rotating position and the preventing position.

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