JP4369251B2 - Locking structure of lid member for switchgear - Google Patents

Description

  The present invention relates to a shutter device including an overhead door, a door, a sliding door including a shutter, a window, a roll screen, a blind, an awning device, a gate, a gate, a sliding wall device, etc. It is related with the locking structure of the opening-and-closing device lid member preferable to apply to.

Conventionally, in this type of invention, for example, as described in Patent Document 1 as the second form, a box (12) having an opening on the front side, and the opening of the box (12) is formed into a hinged door. A lid (52) that opens and closes, a hinge pin (54) that pivotally supports the lid (12), a frame-shaped cover (50) disposed around the lid (12), and the box ( 12) An operation button (30) arranged in the inside and enabling control operation of the opening / closing body and a lock plate (58) (clasp member) on the lid (52) side are engaged with the box (12). There is a switch box provided with a locking device (56) that makes the lid (52) unopenable.
This switch box has excellent advantages such as that the operation button (30) is not exposed from the wall surface and that the mounting operation is easy by devising the support structure of the decorative plate (46) that conceals the electrical wiring. There are many.

However, according to the prior art, even when the lid (52) is closed and locked by the locking device (56), a slight third around the lid (52) is obtained by a malicious third party. When a tool such as a spatula or a shaft is inserted into the gap, and the lid (52) is forcibly pulled by the tool and pulled toward the front, the hinge pin (54) comes out of the shaft support, and as a result The lid (52) may be opened.
Japanese Patent Laid-Open No. 10-162678 (see FIGS. 3 and 4)

  The present invention has been made in view of the above-mentioned conventional circumstances, and a problem to be solved is to prevent the lid member from being forcibly opened by malicious intent and the like so that the opening / closing body is not operated illegally. An object of the present invention is to provide a locking structure for a lid member that can be opened and closed.

In order to solve the above-described problems , the present invention provides an opening communicating with an apparatus for operating an opening / closing body, a lid member capable of opening / closing the opening, and unlocking and locking from the outside provided in the lid member An opening / closing device lid member comprising: a lock mechanism to be operated; and a clasp-like member that engages with a side portion in the opening portion in association with the operation of the lock mechanism to make the closed lid member unopenable. The locking structure includes a frame member that surrounds a peripheral side surface of the lid member, and includes an outer box that is embedded in the wall surface of the casing except for the opening surface, and an inner box that is fixed in the outer box. The opening is provided on the front side of the inner box, the inner box is formed with one engaged portion for engaging and disengaging the clasp member on the side, the side and the opposed sides are formed the other engaged portion, the lid member is hinged door-like Is supported by the shaft member so as to rotate, the protruding portions facing into the inner box within the side end portion is formed, the shaft member, the side of the inner box so that its end portion can not be pulled out in the axial direction The projection is engaged with the portion in a penetrating manner, is located inside the frame member, extends between the projection piece portion of the lid member and the projection piece portion, and penetrates the projection piece portion. By engaging the other engaged portion formed on the side surface of the inner box at the end portion of the protruding piece portion which is the end portion of the inner portion and opposite to the engagement side by the clasp-like member A reverse-side engagement portion is formed to make the lid member immovable in the forward direction, and the reverse-side engagement portion is bent in the forward direction with the protruding end side of the protruding piece portion directed toward the side portion of the housing. It is, when the reverse-side engagement portion is engaged with the other engaged portion that engages so as to close or in contact with the lower edge of該被engagement portion Made is, the lid member, the shaft member arranged on the opposite side engagement portion, the engagement portion of the other of said opposite side by rotating the lid member to pivot said shaft member It is formed in a hole shape penetrating the side portion of the inner box so that the engaging portion can be engaged and disengaged, and the frame member is fixed to the opening edge of the inner box by a fixing means. Features.

The frame member is configured to have a multilayer structure including one or both of a hard layer that prevents penetration of the drill and a fiber layer that can be entangled with the drill .

  The opening communicates with an operation switch unit as a device for operating the opening / closing body, and the operation switch unit includes an opening switch for operating the opening / closing body in an opening direction. One or both of the clasp-like members are provided so as to substantially cover the front of the opening switch when the lid member is made unopenable by the clasp-like member.

Resistance means for increasing the resistance when the lock member in the locked state moves in the unlocking direction is provided, and the resistance means is related to the clasp member when moving in the unlocking direction. The sliding contact is made with the mating engaged portion, and the movement resistance is increased by friction with the inner edge portion of the engaged portion .

  The opening / closing device to which the locking structure of the present invention is applied is an opening / closing device that partitions or opens a space by opening / closing operation of the opening / closing body, and an embodiment in which the opening / closing body is used to perform only opening operation, or an opening / closing body. Includes a mode in which only the closing operation is performed, a mode in which the opening / closing body is used to perform both the opening operation and the closing operation, and the like.

  The present invention includes a mode in which the locking structure is disposed in the opening / closing device itself, a mode in which the locking structure is disposed in a part on the structure side where the switching device is installed, and the locking structure is provided in the switching device. The aspect etc. which are arrange | positioned at the operation body for operation are included. That is, as a specific example of an aspect in which the locking structure is disposed in the opening / closing device itself, a configuration in which the locking structure is provided in an inspection port as the opening portion, or the like can be given. In addition, as a specific example of an aspect in which the locking structure is disposed in a part on the structure side where the switchgear is installed, a device for operating the switcher on the ceiling or wall of the building where the switchgear is installed In the case where there is an inspection port that communicates, a configuration in which the locking structure is provided in the inspection port may be used. Further, when the locking structure is disposed in an operating body for operating the opening / closing device, the operating body includes a signal for opening the opening / closing body, a signal for closing the opening / closing body, and an opening / closing body in operation. The control signal for controlling the opening / closing body, such as a signal for stopping the operation, is output, and both the mode connected to the control circuit unit of the opening / closing body and the mode wirelessly connected to the control circuit unit of the opening / closing body are provided. Including. Furthermore, the operating body is configured such that the opening / closing body is operated only in the opening direction, the opening / closing body is operated only in the closing direction, and the opening / closing body is operated in the opening direction and the closing direction. Including embodiments. Furthermore, the operating body includes a mode externally attached to the surface of the housing wall surface and the opening / closing device, a mode of being embedded in the housing wall surface, the opening / closing device, and the like. From the viewpoint of improving the temperature, the switchgear itself or the vicinity of the switchgear is preferable.

  In addition, specific examples of the “device for operating the opening / closing body” include an operation switch unit for operating the opening / closing body, a signal line, an electric wire, a control circuit, a control component, and a drive for operating the opening / closing body. A power source (for example, a motor or a switch), a power transmission mechanism (for example, a chain and sprocket, a belt and a pulley, a gear, etc.) for transmitting the power of the drive source, a mechanism for manually opening and closing the open / close body by a chain, Examples include a switch or a clutch that switches the operation to a manual mode or an electric mode.

  The lock mechanism may be a mechanism that operates a portion located on the back side of the lid member by a special operation from the outside. Specific examples of the lock mechanism include a mode in which a portion located on the back side of the lid member is operated by operating a key member inserted from the outside, and an ID code storage body such as an electronic key, a magnetic card, or an IC card is externally provided. A mode in which a part located on the back side of the lid member is operated by being contacted or approached from a side, a mode in which a part located on the back side of the lid member is operated by inputting a code, etc., by a wired or wireless remote control operation A mode in which a part located on the back side of the lid member is operated is exemplified. The configuration of the part located on the back side of the lid member includes an aspect in which the part is substantially rotated, an aspect in which the part is substantially linearly moved, and an aspect in which the part is substantially rotationally and substantially linearly moved. However, in order to simplify the structure of the lock mechanism and improve the productivity, it is preferable that the part be rotated.

  Further, the clasp-like member is fixed to an operation part in the lock mechanism, and interlocks with the operation of the lock mechanism to engage a side portion in the opening to make the lid member in a closed state unopenable. If it is a member, the shape and material will not be limited, From a viewpoint of improving intensity | strength and manufacturability, Preferably it forms from a metal material.

  Further, the “end portion opposite to the engagement side by the clasp-like member” is an end portion of the lid member, and is a side that is engaged with the side portion in the opening by the clasp-like member. On the other hand, the opposite end is meant. When the lid member is configured to be opened and closed in the form of an open door, and the free end side is configured to be engaged with the side portion in the opening by the clasp-like member, the end on the opposite side is a hinged door shape. The end of the lid member on the rotating shaft side.

  The operation switch unit may be one or a plurality of switches that are operated to control the opening / closing body such as an opening operation, a closing operation, and a stop. The operation switch unit includes a pushbutton switch that opens and closes a contact when pressed, a key switch that enables an opening and closing operation of the opening and closing body by operating a key member inserted from the outside, and the like. In addition, the operation switch may be configured by only one of the push button switch and the key switch, or may be configured by both. Further, the operation switch unit is operated to lock or unlock the lock mechanism that locks or unlocks the opening / closing body by performing key operation, push button operation, remote operation, code input, or the like. The aspect etc. which output the signal for this are included. Further, when the operation switch unit is constituted by a single switch, the opening / closing body may be configured to perform only an opening operation or only a closing operation by operating the switch, or the switch is operated. A mode in which the opening / closing body is caused to perform two or more operations such as an opening operation, a closing operation, and a stop according to the number of times may be used.

Since the present invention is configured as described above, the following effects can be obtained . The lid member in the closed chain state, by engaging the latching member on the side of the opening, to and engage the opposite side engaging portion in a portion of the engaged portion and the opposite side in the same opening It becomes impossible to move forward. Accordingly, a tool such as a spatula or a shaft is inserted into the clearance around the lid member by malicious means or the like, and on the opposite side to the engagement side by the clasp member, and the lid member is forcibly pushed by the tool. It is possible to prevent the opening / closing body from being opened, and in turn, it is possible to prevent the opening / closing body from being illegally operated.

Further, scoop-like or shaft-like or the like of the tool pledged in the gap of the engaging side and the opposite side by a gap in a by buckle-like member around the cover member by malicious like, cover member acrid assertive by the tool Even if it is twisted, the end side of the shaft member is prevented from engaging and pulling out into the opening. As a result, it is possible to prevent the lid member from being forcibly opened by malicious intent and the like so that the opening / closing body is illegally operated.

Drill to the frame member from the outer portion can prevent from being penetrated obliquely. That is, when the frame member has a multilayer structure including a hard layer, penetration of the frame member by a drill can be prevented by the hard layer. Further, when the frame member is configured in a multilayer structure including a fiber layer, the fiber can be entangled in a drill that attempts to penetrate the frame member. Therefore, the frame member is obliquely drilled with a drill, and the crime time is delayed and the willingness to be committed is reduced for a malicious third party who tries to operate a device such as an operation switch unit by the tip of the drill. As a result, the opening / closing body can be prevented from being opened illegally.

The temporary, the lid member through the drill or the like, by operating the opening switch by the tip, such as the drill, if crime that opens the closing member is attempted, in front of the open switch lock mechanism and the distillate Since one or both of the metal members are provided, penetration by a drill or the like is prevented by these lock mechanisms and clasp members. Therefore, it is possible to prevent the opening / closing body from being opened illegally by operating the opening switch with a drill or the like penetrating.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
The opening / closing device cover member locking structure according to the present embodiment is disposed in or inside an opening or in a building / structure such as a house, building, warehouse, factory, underground shopping center, tunnel, vehicle loading platform, etc. An operation body used in a so-called shutter device that partitions and opens the space inside the housing by opening and closing the part will be described as an example applied to an operation body for controlling the opening and closing body.

  The operating body A includes a casing 10 having an opening 10a on the front side (upper side according to FIG. 1), a lid member 20 that opens and closes the opening 10a in a door shape, and a key provided from the outside provided on the lid member 20. A lock mechanism 30 that is operated, and a clasp-like member 40 that engages with the side portion 12a in the housing 10 in conjunction with the rotational movement of the lock mechanism 30 so that the closed lid member 20 cannot be opened. And a plurality of operation switch portions 50 arranged inside the housing 20 with respect to the lid member 20 in the closed state, and operation of these operation switch portions 50 enables control of an opening / closing body (not shown).

The housing 10 includes an opening 10a communicating with the operation switch 50 for operating the opening / closing body, and is configured in a substantially box shape with the opening 10a facing the front side (upper side in FIG. 1).
And this housing | casing 10 is a frame member surrounding the outer side surface of the outer case 11 embedded in the housing | casing wall surface q except for the opening part surface, the inner case 12 fastened in this outer case 11, and the cover member 20 13, and a lid member 20 is pivotally supported on the front side in the inner box 12 so as to be rotatable.

  The outer box 11 is formed in a substantially rectangular box shape having an opening on the front side, a bracket 11a having a substantially L-shaped cross section is fixed to the inner side surface of the side part, and the bottom of the inner box 12 is mounted on the front side surface of the bracket 11a. Is screwed.

The inner box 12 has an opening on the front side and is formed in a substantially rectangular box shape that is slightly smaller than the outer box 11, and is one of four side portions arranged in a substantially rectangular frame shape (reference numeral in the figure). An engaged portion 12a1 for engaging and disengaging a clasp-like member 40 described later is formed on the side portion indicated by 12a.
Further, in the inner box 12, an engaged portion 12b1 for engaging and disengaging a reverse side engaging portion 25 of the lid member 20 described later is formed on the side portion 12b facing the side portion 12a.

Moreover, the receiving member 12e is being fixed to the side part 12a of this inner box 12 so that it may contact | abut to the protruding piece part 21 of the lid member 20 to be closed.
According to the illustrated example, the receiving member 12e is continuously provided so as to correspond to the substantially entire length of the protruding piece portion 21, but may be divided into a plurality of parts.
According to the receiving member 12e, the closed lid member 20 can be prevented from being forcibly pushed into the inside of the housing 10 and being damaged by an external pressing force due to malicious intentions or the like.

The engaged portion 12a1 only needs to be configured to be able to engage and disengage the free end side of the clasp-like member 40 to be described later. According to the illustrated example, the engaged portion 12a1 is formed in a substantially rectangular hole shape that can penetrate the side portion 12a. Yes.
Further, the engaged portion 12b1 may be configured so as to be able to engage and disengage the reverse side engaging portion 25 of the lid member 20 that rotates with the shaft member 60 as a fulcrum. A plurality of rectangular holes are formed so as to correspond to the plurality of opposite-side engaging portions 25.
These engaged portions 12a1 and side portions 12b are not limited to the through holes as shown in the illustrated example. For example, a recessed portion, a recessed groove, or the like may not be formed through the side portions 12a and the side portions 12b. It is.

Further, an operation switch unit 50 is penetrated and attached to the bottom surface of the inner box 12. The operation switch unit 50 includes a plurality of switches such as a stop switch 51, an open switch 52, and a close switch 53, and each switch is a so-called push button switch that opens and closes an internal contact by a push operation from the outside. Electrical wiring is provided to a control unit (not shown) outside the operation body A.
Among these switches, the opening switch 52 is arranged so that the front side thereof is covered with the clasp-like member 40 and the lock mechanism 30.
According to the arrangement of the opening switch 52, if the lid member 20 is intentionally drilled with a drill drilling tool or the like (for example, a hand drill or an electric drill), the drill of the tool or the like is directed toward the opening switch 52. Perforation can be blocked by the clasp-like member 40 and the lock mechanism 30.

  And the inner box 12 of the said structure engages the shaft member 60 mentioned later to the both sides 12c and 12d (refer FIG. 5) which cross | intersect the side part 12a and the side part 12b, and this shaft member The lid member 20 is rotatably supported by 60.

The frame member 13 is formed by integrating a metal member having a substantially inverted L-shaped cross section into a substantially rectangular frame shape, and is fixed to the opening edge of the inner box 12 by a fixing means such as welding.
The inner surface side of the frame member 13 has a multilayer structure including hard layers 13a and 13b that prevent penetration of a drill such as a drill drilling tool and a fiber layer 13c that can be entangled with the drill.

The hard layers 13a and 13b are formed by fixing a hard material that is difficult to drill with a drill, such as hardened steel or ceramic material, to the inner surface of the frame member 13. According to the illustrated example, the hard layer 13a has a cross-section. The substantially reverse L-shaped frame member 13 is disposed on the inner surface of the front side portion, and the hard layer 13 b is disposed on the inner surface of the side portion of the frame member 13.
According to this configuration, if the frame member 13 is intentionally drilled with a drill drilling tool or the like, the tip of the drill such as the drill drilling tool cannot easily penetrate the hard layer 13a or the hard layer 13b. Therefore, the criminal act which tries to operate the operation switch part 50 with the front-end | tip of the drill penetrated diagonally with respect to the frame member 13 can be prevented.

In addition, the fiber layer 13c may be formed by bundling a large number of fibers having a length enough to be entangled with the drill tip of the drill drilling tool, and more preferably fire resistance, flame resistance, heat resistance, and the like. For example, rock wool fiber, glass fiber, aramid fiber, etc. are used. The fiber layer 13c is fixed so as to cover the inner surfaces of the hard layers 13a and 13b.
According to the fiber layer 13c, if the frame member 13 is intentionally drilled by a drill drilling tool or the like, the fibers of the fiber layer 13c are entangled with the tip side of the drill. Therefore, it is possible to reduce the willingness to commit a criminal who tries to operate the operation switch unit 50 with the tip of a drill that is inserted obliquely into the frame member 13.

  In the present embodiment, the hard layers 13a and 13b, the fiber layer 13c, and the fiber layer 13c are provided inside the frame member 13, thereby effectively preventing penetration by a drill and improving crime prevention. However, from the viewpoint of reducing the component cost, one of the hard layers 13a and 13b and the fiber layer 13c is omitted, or one of the hard layer 13a and the hard layer 13b is omitted. It is also possible.

Further, the lid member 20 is formed by bending, for example, a metallic substantially rectangular plate-like member so that projecting pieces 21, 22, 23, and 24 (see FIG. 3) facing the inside of the housing 10 are formed on the side ends thereof. It is formed integrally.
These projecting pieces 21, 22, 23, and 24 improve the bending strength of the lid member 20 to prevent deformation and destruction due to criminal acts and the like, and in the gap around the lid member 20 are screwdrivers. Such as a spatula-like tool or a shaft-like tool is inserted to prevent the lid member 20 from being forcibly opened.
That is, if there are no projecting piece portions 21, 22, 23, 24, the tip of the tool or the like inserted in the gap around the lid member 20 is hung on the back side of the lid member 20, and the lid member 20 May be forcibly opened, but such an opening operation can be prevented by the above configuration.

Further, of the projecting piece portions 21, 22, 23, 24, the projecting piece portion 21 adjacent to the side portion 12 a of the housing 10 engaged by the clasp-like member 40 penetrates the clasp-like member 40. A possible through hole 21 a is formed to constitute a reinforcing portion for reinforcing the clasp-like member 40.
According to the protruding piece portion 21 (reinforcing portion), a criminal act or the like in which a tool or the like is inserted into the gap between the lid member 20 and the side portion 12a and the lid member 20 is forcibly opened can be prevented. .
That is, if there is no projecting piece portion 21 (reinforcing portion), the clasp-like member 40 receives a bending force on the base end side due to the principle of the lever when the forcible opening operation is performed as described above. As a result, the base end side may be bent and deformed, or the base end side may be detached from the lock mechanism 30.
However, according to the present embodiment, since the clasp-like member 40 passes through the protruding piece 21 (reinforcing portion) and the side portion 12a of the housing 10, the forcible ridges as described above are used. When there is an act of opening, the force applied to the clasp-like member 40 becomes a substantially shearing force. For this reason, the clasp-like member 40 is not easily subjected to the bending force due to the principle of the lever and opposes the tearing force depending on the thickness thereof, so that it is not easily deformed or detached.

Further, it is the end of the lid member 20 and the end opposite to the engagement side by the clasp-like member 40 (in other words, the end of the lid member 20, and the clasp-like member 40 by the casing 10. The opposite side engagement portion 25 is formed on the opposite side with respect to the side engaged with the housing 10 to make the lid member 20 immovable in the forward direction by engaging in the housing 10. ing.
The reverse side engaging portion 25 is formed by bending the protruding end side of the protruding piece portion 22 facing the protruding piece portion 21 (reinforcing portion) of the lid member 20 toward the side portion 12b of the housing 10. The protruding end side is formed so as to be engaged with and disengaged from the engaged portion 12b1 of the side portion 12b. The opposite engagement portion 25 is formed so as to approach or contact the lower edge of the engaged portion 12b1 when engaged with the engaged portion 12b1.
According to the reverse side engaging portion 25, even if the shaft member 60 is damaged due to forcible opening of the lid member 20, the reverse side engaging portion 25 is engaged with the engaged portion 12 b 1 of the housing 10. Therefore, it is possible to prevent the lid member 20 from being opened forward (upward according to FIG. 1).
In addition, when there is a criminal act of forcibly pressing the lid member 20 from the outside toward the bottom surface of the housing 10 (downward according to FIG. 1) and pushing the lid member 20 into the housing 10 The opposite-side engaging portion 25 and the lower edge of the engaged portion 12b1 come into contact with each other to counter the pressing force. Therefore, it is possible to prevent the lid member 20 from being damaged by a strong pressing force from the outside.

According to the illustrated example, a plurality of reverse side engaging portions 25 are provided at equal intervals in the longitudinal direction of the projecting piece portion 22 (see FIG. 3), and are engaged in correspondence with the plurality of reverse side engaging portions 25. By providing a plurality of portions 12b1, the penetrating area of the side portion 12b by the engaged portion 12b1 is reduced and the strength reduction of the side portion 12b is reduced. However, this reverse side engaging portion 25 is single. It is also possible.
As a preferable aspect in which the single reverse-side engaging portion 25 is provided, a single reverse-side engaging portion 25 is provided so as to be continuous over substantially the entire length of the projecting piece portion 22, and is covered in correspondence with the reverse-side engaging portion 25. What is necessary is just to set it as the structure which also makes the engaging part 12b1 single. According to this configuration, since the bent-shaped opposite-side engaging portion 25 is continuous over substantially the entire length of the protruding piece portion 22, a tool or the like is inserted deeply between the protruding piece portion 22 and the frame member 13 by malicious means or the like. It is possible to prevent the act of forcibly opening the lid member 20 by hanging the tip side of the tool on the back side of the lid member 20.

Further, similarly to the hard layers 13a and 13b and the fiber layer 13c of the frame member 13 described above, a hard layer 26 that prevents penetration of the drill and a fiber layer 27 that can be entangled with the drill are disposed on the inner surface of the lid member 20. Has been.
Further, the lid member 20 has a shaft member 60 disposed on the opposite engagement portion 25 side.

The shaft member 60 is engaged with the inside of the housing 10 so that both end sides thereof do not come off from the housing 10 in the axial direction, and supports the lid member 20 so as to rotate in the form of an open door.
More specifically, the shaft member 60 extends between the projecting piece portion 23 and the projecting piece portion 24 of the lid member 20, passes through the projecting piece portions 23 and 24, and rotates with respect to the lid member 20. Freely configured.
Each of the one end side and the other end side of the shaft member 60 is supported by penetrating the inner box 12 and bent in a direction intersecting the penetrating direction outside the inner box 12 as shown in FIG. Thus, the bending portion 61 is configured.
According to the configuration of the shaft member 60, even if the cover member 20 is forcibly opened by malicious intent, the shaft member 60 is pulled out of the housing 10 and the cover member 20 is opened. Can be prevented.

And the lock mechanism 30 is being fixed to the cover member 20 of the said structure at the approximate center side of the surface of the front side.
The lock mechanism 30 has an internal configuration that fits in a concavo-convex shape in the radial direction with a key member 31 that is inserted and rotated from the outside, and has an output shaft 32 that protrudes toward the inside of the housing 10 by a rotation operation of the key member 31. This is a so-called lock that is pivoted to the output shaft 32, and the base end side of the clasp-like member 40 is integrally attached to the output shaft 32.

The clasp-like member 40 is formed by bending or pressing a metal material so as to be close to the side of the lock mechanism 30 and the back of the lid member 20 (substantially Z-shaped according to the illustrated example). ). The clasp-like member 40 may be in contact with one or both of the side portion of the lock mechanism 30 and the back portion of the lid member 20 as long as it can move in conjunction with the operation of the lock mechanism 30. Good.
The clasp-like member 40 has its tip side penetrated into the through hole 21a of the projecting piece 21 (reinforcing part) in the lid member 20, and the tip side is further covered with the side portion 12a of the casing 10. The engaging portion 12a1 is engaged in a penetrating manner.
Further, the clasp-like member 40 has a closed portion 41 that substantially closes a gap between the inner edge of the through hole 21a and the engaged portion 12a1 of the housing 10 when the lid member 20 cannot be opened on the distal end side. An engaging recess 42 that engages with the inner edge of the inner surface is integrally formed (see FIG. 3).

More specifically, the closing portion 41 is formed in the housing 10 so as to substantially close the gap c for the clasp-like member 40 to enter and leave the through hole 21a in a state where the lock mechanism 30 is locked. And protrudes toward the gap c (upward according to FIG. 3).
The engaging recess 42 is an inner edge of the engaged portion 12a1 of the housing 10 in a state where the lock mechanism 30 is locked, and is an edge on the locking direction side of the clasp-like member 40 (according to FIG. 3). It is recessed so as to fit the lower edge).

According to the structure of the clasp-like member 40, when the lid member 20 is opened at a substantially right angle (see FIG. 4), the ratio that the space in the housing 10 is occupied by the clasp-like member 40 is small. Therefore, the operability of the operation switch unit 50 is good.
That is, if the clasp-like member 40 has a shape along a substantially straight line without a bent portion, the tip side of the clasp-like member 40 is a space in the vicinity of the operation switch portion 50 (indicated by a two-dot chain line in FIG. 4). Since it is located in the space s), a hand when operating the operation switch unit 50 touches the distal end side of the clasp-like member 40 and impairs the operability. It is difficult to touch the distal end side of the clasp-like member 40 and the operability of the operation switch unit 50 is good.
As another means for improving the operability of the operation switch unit 50, the depth dimension of the lock mechanism 30 itself (in other words, the dimension protruding to the bottom side of the housing 10) is shortened, and the clasp-like member 40 is Although it may be formed in a substantially straight shape, the above-described configuration is effective because the depth dimension is relatively long due to the structure in which the key member 31 is complicatedly engaged inside in a normal lock.

  Furthermore, according to the structure of the clasp-like member 40, in a state where the lock mechanism 30 is locked (the state shown in FIG. 3), the drill is obliquely penetrated through the frame member 13 and the tip of the drill is further moved. When a criminal act of passing the clearance c in the through hole 21a and operating the operation switch unit 50 with the tip of the drill is to be performed, the tip of the drill to be inserted into the housing 10 is blocked. It can be blocked by the part 41.

  Further, according to the structure of the clasp-like member 40, the clasp-like member 40 is forcibly pulled out from the engaged portion 12a1 when there is a malicious opening of the lid member 20. Can be prevented by fitting between the engaging recess 42 of the clasp-like member 40 and the edge of the engaged portion 12a1 of the housing 10.

  The operating body A having the above configuration shows a particularly preferable aspect in which an example of the locking structure of the opening / closing device lid member according to the present invention is applied. However, the configuration of each part described above may be replaced or used in combination with other configurations. Is possible. Although these will be described in detail below, the same reference numerals are used for components that are substantially the same as those of the operation tool A1 described above, and redundant detailed description is omitted.

The operation body B shown in FIG. 6 has one end side and the other end side of the shaft member 60 described above formed in a substantially straight shape without the bending portion 61, and a C-shaped stopper is provided on each of the one end side and the other end side. A stop member 62 such as a ring or an E-type retaining ring is engaged so as not to move in the axial direction.
According to the operating body B, similarly to the operating body A described above, it is possible to prevent the shaft member 60 from being pulled out by a forceful opening operation, and the shaft member 60 is prevented from being pulled out by mounting the stop member 62. A simple and highly productive structure can be obtained.

In addition, the operating body C shown in FIG. 7 has one end side and the other end side of the shaft member 60 described above formed in a substantially straight shape without the bending portion 61, and each of the one end side and the other end side is formed inside. It is fixed to the box 12 by welding.
According to this operation body B, since the shaft member 60 is firmly integrated with the inner box 12, it is possible to more effectively prevent the shaft member 60 from being pulled out by a forceful opening operation.

Further, the operating body D shown in FIG. 8 has a configuration in which the clasp-like member 40 in the operating body A is replaced with a clasp-like member 40 ′, and the arrangement of the stop switch 51 and the opening switch 52 is reversed.
The clasp-like member 40 ′ is close to the side of the lock mechanism 30 and the back of the lid member 20 by bending or pressing a metal material in substantially the same manner as the clasp-like member 40. It is formed in a shape (for example, a substantially Z shape), and its distal end side is passed through the through hole 21a of the projecting piece portion 21 (reinforcing portion) in the lid member 20, and the engaged portion 12a1 of the side portion 12a of the casing 10 is engaged. Is engaged in a penetrating manner.
And this clasp-like member 40 'is arrange | positioned so that the front of the open | release switch 52 may be substantially covered by the site | part of a base end side, when the cover member 20 is made unopenable.
Furthermore, this clasp-like member 40 ′ has a closing portion 41 ′ that substantially closes the gap with the inner edge of the through hole 21a engaged by the clasp-like member 40 when the lid member 20 is made unopenable, An engaging recess 42 that engages with the inner edge of the engaged portion 12a1 of the housing 10 in an uneven shape is integrally formed.
The closing portion 41 ′ has a distal end of the clasp-like member 40 ′ so that the clasp-like member 40 ′ substantially fills the gap c for entering and exiting the through-hole 21 a with the lock mechanism 30 locked. The side is formed in a wide shape toward the gap c side. More specifically, the edge on the gap c side at the distal end side of the clasp-like member 40 ′ has an arc shape that is close to or slidably contacts the inner edge of the through hole 21a, or It is formed in an inclined shape.

According to the above configuration, the clasp-like member 40 ′ has substantially the same effect as the clasp-like member 40, and is relatively wide in shape. Moreover, the area that prevents the drill that tries to penetrate the lid member 20 from the front side due to malicious intent or the like is wide.
In this operation body D, the stop switch 51 and the opening switch 52 are arranged oppositely to those shown in the figure, so that the lock mechanism 30 more effectively prevents the drilling action toward the opening switch 52. It is good.

Further, the operating body E shown in FIG. 9 omits the through hole 21 a in the lid member 20 described above, and is provided with a reinforcing portion 28 on the back side of the lid member 20, so that the clasp member 40 is substantially parallel to the lid member 20. The clasp-like member 40 ″ is replaced.
The reinforcing portion 28 is a member that approaches or comes into contact with the clasp-like member 40 engaged with the side portion of the housing 10 from the back side in the housing, and is integrated with the lid member 20. It is a member provided.
More specifically, the reinforcing portion 28 protrudes in a substantially L-shaped cross section from the back surface of the lid member 20 toward the bottom portion of the housing 10, and from the inner side of the housing 10 to the clasp-like member 40 ″. (Refer to FIG. 10) The reinforcing portion 28 is disposed on the lid member 20 so as to be disposed close to the engaged portion 12a1 ′ of the side portion 12a of the housing 10. It is fixed on the back side.
According to the configuration of the reinforcing portion 28, it acts in substantially the same manner as the protruding piece portion 21 (reinforcing portion) having the above-described through hole 21 a, and when there is a forcible opening operation with respect to the lid member 20, It is possible to prevent deformation and detachment of the metal member 40 ″.
Moreover, since the clasp-like member 40 ″ can be reinforced only by fixing the reinforcing portion 28 to the lid member 20 by a fixing means such as welding, the manufacturing portion is excellent and the reinforcing portion 28 is compared with the existing operation body. It is also possible to improve crime prevention by wearing.

In addition, according to the said operation body E, although the preferable example which made the reinforcement part 28 adjoin to the to-be-engaged part 12a1 'was shown, the position (the lock mechanism 30 side) where the reinforcement part 28 was separated from the to-be-engaged part 12a1'. It is also possible to adopt an embodiment arranged in ().
Moreover, the shape of the reinforcement part 28 is not limited to the said aspect, For example, it is good also as an aspect fixed cyclically | annularly with respect to the cover member 20. FIG.

Further, the operating body F shown in FIG. 11 shows an example in which a resistance means is configured by replacing the engaged portion 12a1 having a substantially rectangular hole shape in the operating body A with an engaged portion 12a1 ″.
This resistance means only needs to be configured to increase the resistance when the locked clasp member 40 moves in the unlocking direction. The metal member 40 is configured to be in sliding contact with the engaged portion 12a1 ".
The engaged portion 12a1 ″ is formed in a substantially mountain shape so that the inner edge portion substantially parallel to the moving direction of the clasp-like member 40 is in sliding contact with the clasp-like member 40 at the midpoint thereof. According to the illustrated example, only one of the two opposing inner edge portions is formed in a substantially mountain shape, but both inner edge portions may be formed in a substantially mountain shape.
According to the resistance means, when the clasp-like member 40 moves in the unlocking direction, the movement resistance increases due to friction with the inner edge of the engaged portion 12a1 ″. Thus, the rotating lock mechanism also has a large operating resistance when rotating in the unlocking direction, so that it is difficult to perform criminal acts such as biking on the lock mechanism 30.
In addition, according to the above-described preferred example, the inner edge of the engaged portion 12a1 ″ is formed in a substantially mountain shape. A favorable click feeling can be obtained when the top of the inner edge of the shape is exceeded, and therefore the operation feeling during the unlocking operation is good.
In addition, since the clasp-like member 40 moves along the path bent along the substantially mountain-shaped inner edge, it is elastically slightly deformed during the movement.
Further, according to FIG. 11, the closing portion 41 of the clasp-like member 40 is omitted for clarity, but the closing portion 41 is preferably provided in the same manner as the operation body A.

Further, the operating body G shown in FIGS. 12 and 13 has a configuration in which the resistance means is replaced with another mode.
The resistance means in the operating body G engages the engaging / disengaging portion 71a with the clasp-like member 40 so that the clasp-like member 40 in the locked state cannot be moved, and this engagement state is exposed to the outside. And a locking / unlocking mechanism 70 that is released by the operation of the operation unit 71b.
The locking engagement / disengagement mechanism 70 includes a rocking member 71 that rocks one end side and the other end side in the longitudinal direction in a substantially seesaw shape, and an elastic body 72 that biases the rocking member 71. Become. In addition, according to the example of illustration, in order to ensure the space of the locking / unlocking mechanism 70, the fiber layer 13c has been partially or entirely omitted.
The swing member 71 is a substantially long integral member having an engagement / disengagement portion 71 a on one end side and an operation portion 71 b on the other end side, and a midway portion in the longitudinal direction is a shaft on the back side of the frame member 13. The engaging / disengaging portion 71a is supported so as to be able to be engaged / disengaged with the locked clasp-like member 40, and the operation portion 71b is passed through the frame member 13 and exposed to the outside.
According to the illustrated example, the elastic body 72 is a compression spring in which one end side is locked to the back side of the operation portion 71b of the swinging member 71 and the other end side is locked to a stationary part such as an opening edge of the outer box 11. It is. The elastic body 72 may be, for example, rubber, an elastic synthetic resin, a tension spring, a leaf spring, or the like as long as the elastic body 72 is biased in a direction in which the operation portion 71b is exposed to the outside of the frame member 13.
According to this operating body G, the engagement / disengagement part 71a of the swinging member 71 is engaged with the locked clasp member 40, so that the clasp member 40 cannot be moved in the unlocking direction.
During the normal unlocking operation, the operator presses the operating portion 71b, so that the engagement / disengagement portion 71a is detached from the clasp-like member 40, and the unlocking mechanism 30 is unlocked while this released state is maintained. By doing so, the clasp-like member 40 moves in the unlocking direction.
Therefore, a third party who wants to kick the lock mechanism 30 by malicious means must operate the operation unit 71b with one hand and perform a picking operation with a special tool with the other hand. That is, criminal acts such as picking can be made difficult.
In the operating body G, the engaged portion 12a1 may be replaced with the engaged portion 12a1 "of the operating body F to make criminal acts such as picking more difficult.

The resistance means is not limited to the mode of the operating body F or the operating body G as long as the resistance is increased when the clasp-like member in the locked state moves in the unlocking direction. The clasp-like member 40 when moving in the unlocking direction may be urged in the locking direction.
As a specific example in this case, an elastic body is engaged with the distal end side or the base end side of the clasp-like member 40, and the clasp-like member 40 in a locked state is urged in the locking direction by the elastic body. A coil spring having one end fixed to the lock mechanism 30 and the other end fixed to the clasp-like member 40 is disposed around the lock mechanism 30, and the twist direction when the coil spring is restored to the spring shape A mode in which the clasp-like member 40 in the locked state is urged in the locking direction by the urging force of is provided.
In addition, according to the operation body F, the resistance means has shown a preferable example in which the clasp member 40 is slidably contacted with the inner edge of the engaged portion 12a1 ″. An aspect in which the side surface and the bottom surface of the box 12 are slidably contacted, an aspect in which the clasp-like member 40 is slidably in contact with the back surface of the lid member 20, and the clasp-like member 40 is slid on the side surface of the lock mechanism 30. It is also possible to adopt a mode in which the clasp-like member 40 is slidably brought into contact with other immovable parts, such as a mode in which it is brought into contact.

  In the above-described embodiment, a specific example in which the locking structure of the opening / closing device lid member according to the present invention is applied to the opening of the operating body for operating the opening / closing device is shown. It can also be applied to inspection ports provided in the storage case of the take-up shaft in the device, inspection ports arranged on the structure side where the switchgear is installed (for example, the ceiling or wall of a building), etc. is there.

Sectional drawing which looked at an example of the operation body to which the locking structure of the switchgear lid member concerning this invention was applied from the downward side. Sectional drawing which looked at the same operation body from the side surface side. (III)-(III) sectional view taken on the line in FIG. It is a front view which shows the state which open | released the cover member in the same operation body, and has shown the principal part notched. FIG. 2 is a cross-sectional view taken along line (V)-(V) in FIG. 1, showing an example of a shaft member mounting structure. Sectional drawing which shows an example which used the axial member as another aspect in the locking structure of the switchgear lid member concerning this invention. Sectional drawing which shows an example which used the axial member as another aspect in the locking structure of the switchgear lid member concerning this invention. Sectional drawing which shows an example which made the clasp-like member another aspect in the locking structure of the switchgear cover member concerning this invention. Sectional drawing which shows an example which made the reinforcement part the other aspect in the locking structure of the switchgear cover member concerning this invention. (X)-(X) sectional view taken on the line in FIG. The principal part sectional drawing which shows an example provided with the resistance means in the locking structure of the switchgear cover member concerning this invention. The principal part notch front view which shows an example which made the resistance means another aspect in the locking structure of the switchgear lid member concerning this invention. (XIII)-(XIII) sectional view taken on the line in FIG.

Explanation of symbols

10: Housing 10a: Opening 12a: Side 12a1: Engaged part 12a1 ": Engaged part (resistance means)
13a: Hard layer 13c: Fiber layer 20: Lid member 21: Projection piece (reinforcement part)
21a: Through hole 25: Reverse side engagement portion 28: Reinforcement portion 30: Lock mechanism 40, 40 ': Clasp-like member 41, 41': Closure portion 50: Operation switch portion 52: Release switch 60: Shaft member 70: Locking engagement / disengagement mechanism 71a: engagement / disengagement unit 71b: operation unit A, B, C, D, E, F, G: operation body

Claims (4)

An opening communicating with a device for operating the opening and closing body, a lid member capable of opening and closing the opening, a lock mechanism provided on the lid member that is unlocked and locked from the outside, and an operation of the lock mechanism In the locking structure of the opening / closing device lid member provided with a clasp-like member that engages with a side portion in the opening portion in conjunction with the lid portion and makes the lid member in a closed state unopenable,
A housing comprising a frame member surrounding a peripheral side surface of the lid member, and an outer box embedded in a wall surface of the casing except for the opening surface, and an inner box fixed in the outer box. Prepared,
The opening is provided on the front side of the inner box,
The inner box has one engaged portion for engaging and disengaging the clasp-like member on its side, and the other engaged portion is formed on the side facing the side. And
The lid member is supported by a shaft member so as to rotate in the shape of a hinged door, and a projecting piece portion facing inward of the inner box is formed at a side end portion thereof,
The shaft member is engaged with the side portion of the inner box in a penetrating manner so that the end portion side thereof does not come off in the axial direction, and is located inside the frame member. And penetrates these protrusions,
The other engaged portion is an end portion of the protruding portions of the opposite side which is formed on a side surface of the inner box with respect to the engagement side by the latching member comprising an end portion of the protrusion portion in the lid member A reverse engagement portion is formed which makes the lid member immovable in the forward direction by engaging with
The reverse side engaging portion is bent toward the front side with the protruding end side of the protruding piece portion toward the side portion of the housing, and the other engaged portion with which the reverse side engaging portion engages, When engaged, it is formed so as to approach or contact the lower edge of the engaged portion,
The lid member arranges the shaft member on the reverse engagement portion side,
The other engaged portion has a hole shape penetrating the side portion of the inner box so that the reverse engaging portion can be engaged and disengaged by rotating the lid member with the shaft member as a fulcrum. Is formed,
The frame member is fixed to the opening edge of the inner box by a fixing means, and the opening / closing device lid member locking structure.   The said frame member is comprised by the multilayered structure containing one or both layers among the hard layer which prevents penetration of a drill, and the fiber layer which can be entangled with a drill. Locking structure of the opening / closing device lid member. The opening communicates with an operation switch unit as a device for operating the opening / closing body, and the operation switch unit includes an opening switch for operating the opening / closing body in an opening direction,
One or both of the lock mechanism and the clasp-like member are provided so as to substantially cover the front of the opening switch when the lid member is not opened by the clasp-like member. The locking structure of the opening / closing device lid member according to claim 1 or 2.   Resistance means for increasing the resistance when the lock member in the locked state moves in the unlocking direction is provided, and the resistance means is related to the clasp member when moving in the unlocking direction. The sliding part is brought into sliding contact with the mating engaged part, and the movement resistance is increased by friction with the inner edge part of the engaged part. Locking structure of the open / close device lid member.

Images