JP2018053615A - Locking structure at lower end portion of round case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a fall of a case plate when an upper side locking state of the case plate is released.SOLUTION: A lower end portion locking structure of a round case whose mounting is established by locking upper and lower end portions and is configured such that a lower locking part (tip part 720, lower bent edge 74) of a round case plate 7 takes a first pose at a first locking position relative to a lower locked part (lower case lock member 6, additional lower case-lock element 8) when the upper end of the round case is in the locking state, and the lower locking part transits from the first pose to a second pose in response to an action of the round case when the locking state of the upper end of the round case and takes a second locking position for being abutted with three points (P1, P2, and P3) of the lower locked part in order to restrict the lower locking part from being released from the lower locked part.SELECTED DRAWING: Figure 10

Description

The present invention relates to a locking structure for a lower end of a round case, and more particularly, to a lower end of a round case that can prevent the round case from falling even when the upper end of the round case is released. It relates to a stop structure.

A so-called round case is known as a shutter case such as a heavy shutter (Patent Document 1). The round case is made of a case plate that is formed by bending a metal plate in a cross-sectional arc shape, and the upper and lower ends of the bent case plate are placed on the upper case stopper provided in the housing, near the lintel, etc. It is attached by being respectively locked to the provided lower case stopper. When the upper and lower end portions of the round case are locked, the case plate is elastically deformed in a direction in which the upper end portion and the lower end portion are brought close to each other, and the locked state is maintained by the elastic force of the elastically deformed case plate expanding.

However, when the vibration exceeding the elasticity of the round case is affected by an earthquake, etc., or for some reason (such as unintentionally plastic deformation to improve workability when attaching the round case) When the elastic force is weak (in this case, the locked state of the upper end is easily released), the locked state of the upper end of the round case may be released. If the locked state of the upper end of the round case is released, the round case may fall without being held. Although it is considered that such a drop of the round case is very unlikely, it is desirable to prepare for the event.

To prevent the upper end of the round case from coming off from the upper case stopper, fix the locking part between the upper end of the round case and the upper case stopper with a screw (considering removal during maintenance). However, especially when the size of the round case is large, it is difficult for the operator to reach the upper case stopper after attaching (locking) the round case (in many cases the ceiling is used). It is also dangerous to work at a high place.

Even if the receiving member is installed outside the round case and the upper end portion of the round case is detached from the upper case stopper, it is conceivable that the round case is supported by the receiving member to prevent the round case from falling. However, the length of the round case may exceed 10 m, and the receiving member is strong enough to support the fall of the round case in a limited space in the ceiling (where there are switches and other peripheral parts). It is difficult to install. Moreover, when installing a receiving member outside a ceiling, an external appearance will be impaired.
JP 2008-297814 A

  An object of the present invention is to prevent the case plate from dropping when the upper locking state of the case plate is released.

The technical means adopted by the present invention are:
It is a locking structure of the lower end of the round case attached by locking the upper and lower ends,
The lower locking portion of the round case plate is in the first locking position in the first posture with respect to the lower locked portion when the upper end of the round case is locked.
The lower locking portion moves from the first posture to the second posture according to the behavior of the round case when the upper end of the round case is released, and the lower locking portion Taking a second locking position to contact the lower locked portion at three points so as to restrict the lower locked portion from coming off;
It is the latching structure of the lower end of a round case.

In one aspect, the lower locking portion of the round case has an L shape from the tip portion and the lower bent side of the lower inclined portion of the round case, and the tip portion is formed from the lower folding portion. A first portion closer to the curved side and a second portion farther from the lower bent side, the lower bent side from the first portion closer to the distal end portion and the distal end portion A second part on the far side,
The lower locked portion includes a bottom portion, an upper locked portion located above the first side of the bottom portion, an upper contacted portion at an upper end of a rising side on the second side of the bottom portion, A lower contacted portion at the tip of a protruding element that is located below the upper locked portion and the upper contacted portion and protrudes from the rising side toward the first side;
In the first locking position, a tip of the lower bent side is in contact with the bottom portion, and a first portion of the lower bent side is in contact with the lower contacted portion,
In the second locking position, the tip of the lower bent side is separated from the bottom, and the second portion of the lower bent side is in contact with the lower contacted portion, and the upper engaged The upper surface of the first part of the tip part contacts the stop part, and the lower surface of the second part of the tip part contacts the upper contacted part.
In one aspect, the lower surface of the second portion of the tip portion is in contact with the upper contacted portion at the first locking position.
In one mode, in the 1st locking position (the 1st posture) and the 2nd locking position (the 2nd posture), the tip part and the lower bent side are in the inclined posture. The tip portion is inclined downward from the second side toward the first side, and the lower bent side is inclined downward from the first side toward the second side.

In one aspect, the lower locked portion is
A bottom portion, an upper locked portion located above the first side of the bottom portion, and a rising side on the second side of the bottom portion, between the upper locked portion and the rising side A first member adapted to receive the lower locking portion from an opening;
A projecting element that extends from the second side toward the first side, and a second member that is detachably attached to the first member that has received the lower locking portion;
In the first locking position, the tip of the lower bent side abuts on the bottom portion of the first member, and the lower bent portion touches the lower contacted portion of the tip of the projecting element of the second member. The first part of the side is in contact,
In the second locking position, the tip of the lower bent side is separated from the bottom of the first member, and the second bent side of the second bent side is separated from the lower contacted portion of the second member. The upper surface of the first portion of the distal end portion is in contact with the upper locked portion of the first member, and the lower surface of the second portion of the distal end portion is formed on the second member. The upper end of the rising side or the upper end of the rising side of the first member abuts.
In one aspect, the second member is detachably attached to the first member by a screw.
In one aspect, the second member is a screw.
In one aspect, the upper end of the rising side of the second member forms the upper contact portion,
In a state where the second member is mounted on the first member, the height of the upper end of the rising side of the second member is at least higher than the height of the lower surface of the upper locked portion of the first member. The protruding element protrudes from the rising side of the second member toward the first side.
In one aspect, the upper end of the rising side of the first member forms the upper contact portion, and the second member is a screw that is screwed to the rising side of the first member, and the screw The tip of is the lower contacted portion. The protruding element is a screw protruding from the rising side of the first member toward the first side. In this case, since it is only necessary to attach a screw to the first member, the number of parts can be reduced, and workability can be improved.

In one aspect, the lower locking portion is received from the opening of the first member, so that the lower locking portion is in a pre-locking position with respect to the first member, and at least the lower locking portion is in the pre-locking position. The tip of the side bent side is in contact with the bottom of the lower locked portion,
By attaching the second member to the first member, the inclined surface of the lower bent side comes into contact with the lower contacted portion of the tip of the projecting element and is pushed to the first side, The lower locking portion changes from the pre-locking position to the first locking position.

  In the present invention, the lower side locking portion of the round case moves upward according to the behavior (deformation / rotation) of the round case when the upper end of the round case is released. The second position moves from the first position to the second position and contacts the lower locked portion at three points so as to restrict the lower locking portion from coming off the lower locked portion. Taking the locking position prevents the round case from falling off the upper locking state.

  In the second locking position, the upper surface of the first portion of the distal end portion of the lower locking portion is in contact with the upper locked portion, and the lower surface of the second portion is in contact with the upper pressed portion. Further, the further deformation / rotation of the round case restricts the lower locking portion from rotating further upward to maintain the second posture, and the lower bent side of the lower locking portion is the tip of the protruding element. The lower locking portion of the round case is restricted from moving to the second side so that the lower locking portion at the second locking position comes out. By holding the second locking position, it is possible to prevent the round case from falling off the upper locking state.

  By inserting the lower locking portion into the first member before the second member is attached to the first member, the workability when inserting the round case is the same as the conventional method, and the second member is Since it is detachably attached to the first member, it can be easily removed for inspection and repair. Further, since the second member can be composed of a relatively small member, the appearance is not impaired.

It is a longitudinal cross-sectional view of the opening upper part part which shows a shutter case, and the lower side latching | locking part of a case board exists in a 1st latching position with respect to a lower side latching | locking part. It is a front view of a shutter case. It is a side view of an additional lower case stopper element. FIG. 4 is a plan view and a front view of the additional lower case stopper element shown in FIG. 3. It is a longitudinal cross-sectional view of the opening upper part part which shows a shutter case, and the lower side latching | locking part of a case board exists in a pre latching position with respect to a lower case stopper. It is a figure which shows the attachment state of a case board, the upper side latching | locking part of a case board is latched by the upper case stopper, and the lower latching part of a case board is pre-locking with respect to a lower case stopper In position. It is a figure which shows the attachment state of a case board, the upper side latching | locking part of a case board is latched by the upper case stopper, and the lower side latching | locking part of a case board is 1st with respect to a lower side latching | locking part. In the locked position. 7 shows the behavior (deformation / rotation) of the case plate when the upper locking portion of the case plate is disengaged from the upper case stopper, and the lower locking portion of the case plate is the lower locked portion. In the second locking position relative to the part. FIG. 8 is a partially enlarged view of FIG. 7, showing a locked state (first locking position) between the lower locking portion and the lower locked portion of the case plate. It is the elements on larger scale of FIG. 8, Comprising: It is a figure which shows the latching state (2nd latching position) of the lower side latching | locking part and lower side latching | locking part of a case board. It is a longitudinal cross-sectional view of the opening upper part part which shows the shutter case (lower side latching | locking part exists in a 1st latching position) which concerns on other embodiment, and the lower side latching | locking part of a case board is a lower side engagement It is in the first locking position with respect to the stop. It is a figure which shows the attachment state of the case board which concerns on other embodiment, the upper side latching | locking part of a case board is latched by the upper case stopper, and the lower latching part of a case board is a lower case stopper In the pre-locking position. It is a figure which shows the attachment state of the case board which concerns on other embodiment, The upper side latching | locking part of a case board is latched by the upper side case stopper, and the lower side latching part of a case board is a lower side latched In the first locking position relative to the part. FIG. 13 shows the behavior (deformation / rotation) of the case plate when the upper locking portion of the case plate is detached from the upper case fixing material, and the lower locking portion of the case plate is the lower locked portion. In the second locking position relative to the part. FIG. 14 is a partially enlarged view of FIG. 13, showing a locked state (first locking position) between the lower locking portion and the lower locked portion of the case plate. It is the elements on larger scale of FIG. 14, Comprising: It is a figure which shows the latching state (2nd latching position) of the lower side latching | locking part and lower side latching | locking part of a case board.

FIG. 1 is a longitudinal sectional view of an upper part of a building opening (including a shutter case according to the present embodiment), and FIG. 2 is a front view thereof. On the wall W, the left and right brackets 1 are provided so as to be opposed to each other in the form of a take-out with an interval in the opening width direction positioned above the ceiling C. A winding shaft 2 is supported between the left and right brackets 1, and a shutter curtain 3 guided by a guide rail G into the shutter case above the building opening is wound around the winding shaft 2.

The bracket 1 is formed from a rectangular plate body having an upper edge 10, a lower edge 11, a base end edge 12, and a front end edge 13, and a base end piece 120 is bent at the base end edge 12. The base end piece 120 is brought into contact with the wall body W and fixed with bolts B, whereby the plate body extends vertically from the wall body W. In this specification, when a certain element has a part close to the wall body W and a part far from the wall body W, the side near the wall body W is the first side, and the side far from the wall body W is the second side. That's it.

A lower piece 110 is bent at the lower edge 11 of the bracket 1, and between the left and right brackets 1, between the longitudinal central portions of the lower piece 110, both end portions in the length direction of the mounting member 4 are located. Each is fixed. The attachment member 4 is a square pipe having a square shape in cross section from the upper surface 40, the lower surface 41, the first vertical surface 42 on the first side, and the second vertical surface 43 on the second side (see FIG. 9 and the like).

As shown in FIG. 1, the mounting member 4 is provided with a long support member 14 extending in the opening width direction, and the lintels 15 and 16 are opposed to each other near the ceiling C above the building opening. The shutter curtain 3 passes between them. The support member 14 is provided with a smoother 17 and an emergency switch 18 positioned above the lintel 15.

Between the corners formed by the upper edge 10 and the base end edge 12 of the left and right brackets 1 (that is, the upper part on the first side of the bracket 1), both ends in the length direction of the upper case stopper 5 are fixed. Has been. The lower case stopper 6 is fixed to the second vertical surface 43 which is the second side portion of the attachment member 4 over the length direction.

The shutter case is formed by connecting a plurality of curved case plates (so-called round cases) 7 in the opening width direction, with the upper and lower case stoppers 5 and 6 at the upper and lower ends of each case plate 7, respectively. By attaching to, the accommodation space of the shutter curtain 3 wound up by the winding shaft 2 is formed between the inner surface of the case plate 7 and the wall body W.

The case plate 7 is elastically deformed in the direction in which the upper and lower end portions are brought closer to each other so that the upper locking portion and the lower locking portion are locked to the upper locked portion and the lower locked portion, respectively, and elastically deformed. The locked state is maintained by the elastic force of the case plate being expanded (in the direction in which the upper and lower ends are separated). The number of case plates 7 constituting the shutter case can be changed depending on the opening width dimension and the width dimension of each case board, and is not limited. In the illustrated embodiment, the case plates 7 are attached so that the end portions overlap each other, but the overlapping mode (which of the adjacent case plates is positioned on the outside and the inside) is not limited to the illustrated mode. Moreover, the edge of adjacent case plates may be brought into contact with each other so as not to overlap.

In the present embodiment, after the lower locking portion of the case plate 7 is locked to the lower case stopper 6, the additional lower case fixing element 8 is provided on the lower case stopper 6, thereby The case plate is prevented from falling when the upper locking state is released. In the illustrated example, the additional lower case stopper element 8 is fixed to the lower case stopper 6 by screws 9. That is, a lower locked portion is formed from the lower case stopper 6 and the additional lower case stopper element 8.

As shown in FIG. 6 and the like, the case plate (round case) 7 has an arcuate portion 70 and an upwardly inclined shape from the upper end of the arcuate portion 70 toward the first side (wall body W) in a sectional view or a side view. The upper inclined portion 71 that extends, the lower inclined portion 72 that extends downward from the lower end of the arc-shaped portion 70 toward the first side (wall body W), and the upper end of the upper inclined portion 71 are folded upward. It consists of an upper bent side 73 and a lower bent side 74 that is folded back at the tip of the lower inclined portion 72 toward the lower end. In the present embodiment, an upper locking portion is formed from the distal end portion 710 of the upper inclined portion 71 and the upper bent side 73, and the lower side from the distal end portion 720 of the lower inclined portion 72 and the lower bent side 74. A locking portion is formed. In the present embodiment, the upper inclined portion 71 and the lower inclined portion 72 are planes that extend in a straight line shape in cross section. The case plate 7 according to the present embodiment is a case plate for a heavy shutter, and is generally formed from a 5 to 20 kg steel plate, depending on the size.

As shown in FIG. 2, the upper case stopper 5 is a long material extending in the opening width direction, and has a vertical side 50 extending along the wall W and a lower end of the vertical side 50 in a sectional view or a side view. A lower side 51 extending horizontally from the upper side to the second side, an upper side 52 extending horizontally from the upper end of the vertical side 50 toward the second side, and an upper vertical side 53 depending from the tip of the upper side 52 (See FIG. 6). The protruding dimension of the lower side 51 (going from the first side to the second side) is larger than the protruding dimension of the upper side 52. An opening for receiving the upper locking portion of the case plate 7 is formed between the lower end of the upper vertical side 53 and the upper surface of the lower side 51, and the upper vertical side 53 of the upper case stopper 5 is located on the upper side of the case plate 7. It becomes the to-be-latched part which a latching part latches.

With reference to FIG. 6, the locking between the upper locking portion (the upper bent side 73 + the tip portion 710 of the upper inclined portion 71) of the case plate 7 and the upper case stopper 5 will be described. The upper bent side 73 is inserted from the opening between the lower end of the upper vertical side 53 and the lower side 51 of the upper case stopper 5 and is locked to the upper vertical side 53 of the upper case stopper 5. In the locked state, the lower end of the upper vertical side 53 is in contact with the upper surface of the tip portion 710 of the upper inclined portion 71 of the case plate 7. The shape and configuration of the upper case stopper and the shape and configuration of the upper locking portion are not limited to the illustrated modes.

As shown in FIG. 2, the lower case stopper 6 is a long material extending in the opening width direction, and from a horizontal bottom 60 and a first side end of the bottom 60 in a sectional view or a side view. The first vertical side 61 rising vertically, the second vertical side 62 rising vertically from the second side end of the bottom side 60, and the short length extending horizontally from the upper end of the first vertical side 61 toward the second side And an upper horizontal side 63 (see FIG. 9). In the illustrated embodiment, the second vertical side 62 is lower than the first vertical side 61, and the height dimension of the second vertical side 62 is smaller than the height dimension of the first vertical side 61. The extension dimension of the upper horizontal side 63 is smaller than the width dimension of the bottom side 60. An opening for receiving the lower locking portion of the case plate 7 is formed between the tip of the upper horizontal side 63 and the tip of the second vertical side 62, and the case is formed in the internal space of the lower case stopper 6 from the opening. The lower locking part of the plate 7 is received. The lower case stopper 6 is attached by fixing (for example, welding) the first vertical side 61 to the second vertical surface 43 of the attachment member 4.

With reference to FIGS. 5 and 6, initial locking between the lower locking portion of the case plate 7 (the lower bent side 74 and the tip portion 720 of the lower inclined portion 72) and the lower case stopper 6. Will be described. The tip portion 720 and the lower bent side 74 of the lower inclined portion 72 are inserted from the opening between the upper horizontal side 63 and the second vertical side 62 of the lower case stopper 6, and the lower side of the lower locking portion. The tip of the bent side 74 is brought into contact with and locked to the second side end of the bottom 60 of the lower case stopper 6, that is, the corner of the bottom 60 and the second vertical side 62. This state is a pre-locking position of the lower locking portion of the case plate 7. As described below, by attaching the additional lower case stopper element 8 to the lower case stopper 6, the lower locking portion of the case plate 7 changes from the pre-locking position to the first locking position.

The additional lower case stopper element 8 is a long material extending in the opening width direction, and in this embodiment, the length dimension is shorter than the width dimension of one case plate 7, and at least one case plate 7. One additional lower case stop element 8 is attached. As shown in FIG. 3, the additional lower case stopper element 8 includes a horizontal base 80, a vertical side 81 that rises vertically from the second side end of the base 80, and an intermediate portion in the height direction of the vertical side 81. And an intermediate horizontal side 82 extending horizontally from the first side toward the first side.

As shown in FIGS. 3 and 4, in the present embodiment, in a long metal member having a L-shaped cross-sectional view from a horizontal base and a vertical rising side, the rising side is at a predetermined portion in the length direction. An intermediate horizontal side is formed by bending 90 degrees so as to face the bottom side, and a vertical side is formed from the remaining portion of the rising side. That is, the vertical side 81 includes a low-back portion 811 and a high-back portion 810, and an intermediate horizontal side 82 extends from the upper end of the low-back portion 811. In the illustrated embodiment, a low-back portion 811 and an intermediate horizontal side 82 are formed between the high-back portions 810 on both sides in the length direction (see FIG. 4).

The width dimension of the bottom side 80 of the additional lower case stopper element 8 is smaller than the width dimension of the bottom side 60 of the lower case stopper member 6, and the height dimension to the intermediate horizontal side 82 of the additional lower case stopper element 8 (low The height dimension of the back portion 811 is slightly larger than the height dimension of the second vertical side 62 of the lower case stopper 6, and the height dimension (high profile portion 810) of the vertical side 81 of the additional lower case stopper element 8. Is higher than the height dimension of the first vertical side 61 of the lower case stopper 6. The projecting dimension of the intermediate horizontal side 82 of the additional lower case stopper element 8 is smaller than the width dimension of the bottom side 60 of the lower case stopper material 6 and larger than the width dimension of the bottom side 80 of the additional lower case stopper element 8 ( The relative size relationship between the protruding dimension of the intermediate side 82 and the width dimension of the bottom side 80 is arbitrary.) The position of the front end of the intermediate horizontal side 82 of the additional lower case stopper element 8 extends to a position close to the vertical plane passing through the front end of the upper horizontal side 63 of the lower case stopper 6 (at the front end of the upper horizontal side 63). On the other hand, the front end of the intermediate horizontal side 82 is slightly located on the second side). The height dimension of the first vertical side 61 of the lower case stopper 6 and the height dimension of the vertical side 81 of the additional lower case stopper element 8 may be substantially the same. For example, the upper surface of the upper horizontal side 63 of the lower case stopper 6 and the upper end of the vertical side 81 of the additional lower case stopper element 8 may be located at the same height (in this case, the upper end of the vertical side 81 is The height of the upper horizontal side 63 is higher than the lower surface of the upper horizontal side 63).

The additional lower case stopper 8 is fixed to the lower case stopper 6 in a state where the case plate 7 is locked to the upper case stopper 5 and the lower case stopper 6 (FIGS. 5 and 6). . The additional lower case stopper element 8 causes the lower part of the vertical side 81 (the lower part of the high back part 810 and the low back part 811) to abut the outer surface of the second vertical side 62 of the lower case stopper 6 and the bottom side 80 is The lower part of the vertical side 81 and the second vertical side 62 of the lower case stopper 6 are connected by the screw 9 in a state of being in contact with the lower surface of the bottom side 60 of the lower case stopper 6. In the illustrated embodiment, one additional lower case-stop element 8 is fixed to the case plate 7 by screws 9 at three positions with a distance in the length direction (see FIG. 2).

At this time, the tip of the intermediate horizontal side 82 of the additional lower case stopper element 8 comes into contact with the inclined surface of the lower bent side 74 of the case plate 7 in the pre-locking position with the lower case stopper 6, By pushing into the first side, the lower locking portion of the case plate 7 moves from the pre-locking position to the first locking position (FIGS. 1, 7, and 9). The upper locking portion of the case plate 7 is locked to the upper case stopper 5, and the lower end locking portion (the tip portion 720 and the lower bent side 74) of the case plate 7 is the lower locked portion (lower case). The state where the stopper 6 and the additional lower case stopper element 8) are locked at the first locking position is the normal mounting state (FIG. 1).

In the first locking position, the lower locking portion is in the first posture, and the distal end portion 720 and the lower bent side 74 are in the inclined posture. Here, in the distal end portion 720, a side closer to the lower bent side 74 is a first portion 720A, a side farther from the lower bent side 74 is a second portion 720B, and the lower bent side 74 has a distal end portion 720. The side closer to the first portion 74A is the first portion 74A, and the side farther from the tip portion 720 is the second portion 74B. When the lower locking portion is locked to the lower locked portion, the first portion 720A is located on the first side, the second portion 720B is located on the second side, and the first portion 74A is The first side and the second portion 74B are located on the second side. In addition, these 1st site | parts and 2nd site | parts prescribe | regulate the relative positional relationship of two site | parts. When the lower locking portion is in the first posture, the tip portion 720 is inclined downward toward the tip (from the second side to the first side), and the second portion 720B is on the upper side and the second side. The first portion 720A is located on the lower side and the first side. The lower bent side 74 is inclined downward toward the tip (from the first side to the second side), the first part 74A is located on the upper side and the first side, the second part 74B is located on the lower side, and Located on the second side.

As shown in FIG. 9, at the first locking position, the tip of the lower bent side 74 abuts the upper surface of the bottom 60 of the lower case stopper 6 in the lower locking portion of the case plate 7. The tip of the intermediate horizontal side 82 of the additional lower case stopper element 8 is in contact with the upper part (the first part 74A close to the tip part 720) of the lower bent side 74 in the inclined attitude, and the inclined attitude The upper end of the vertical side 81 (high-back portion 810) of the additional lower case stopper element 8 is in contact with the lower surface of the second portion 720B of the distal end portion 720. Thus, in the illustrated embodiment, the lower locking portion (the tip portion 720, the lower bent side 74) of the case plate 7 is the lower locked portion (the lower case stopper 6, the additional lower case stopper). Locked to element 8) at three points. The upper surface of the tip portion 720 and the upper horizontal side 63 of the lower case stopper 6 are separated from each other. In addition, when the height of the vertical side 81 (high-back portion 810) of the additional lower case stopper element 8 is relatively low, the lower surface of the distal end portion 720 in the first inclined position at the first locking position. And the upper end of the vertical side 81 (high profile portion 810) of the additional lower case stopper element 8 may be spaced apart (as will be described later, at least in the second locking position, the tip portion in the second inclined posture) 720 and the upper end of the vertical side 81 of the additional lower case stopper element 8 abut).

The present embodiment provides means for preventing the case plate 7 from falling off when the upper locking state of the case plate 7 is released. This means will be described with reference to FIGS. .

In FIG. 7, the upper locking portion of the case plate 7 is locked to the upper case stopper 5, and the lower locking portion is the lower locked portion (lower case stopper 6, additional lower case stopper). The element 8) is locked in the first locking position. As shown in FIG. 9, at the first locking position, the tip of the lower bent side 74 is in contact with the upper surface of the bottom 60 of the lower case stopper 6, and is intermediate between the additional lower case stopper element 8. The tip of the horizontal side 82 is in contact with the upper part (position close to the tip part 720) of the lower bent side 74 in the inclined posture, and is added to the lower surface of the second part 720B of the tip part 720 in the inclined posture. The upper end of the vertical side 81 (high profile portion 810) of the lower case stopper element 8 is in contact. The upper surface of the first portion 720A of the tip portion 720 and the upper horizontal side 63 of the lower case stopper 6 are separated from each other.

In the attached state of FIG. 7, when the upper bent side 73 of the case plate 7 is detached from the upper vertical side 53 of the upper case stopper due to vibration or the like, the case plate 7 that has been elastically deformed in the locked state expands. And return to the front (in the direction away from the upper case stopper 5, that is, the second side) and rotate downward under its own weight.

At this time, the tip portion 720 of the lower locking portion is inclined while the lower surface of the second portion 720B of the tip portion 720 of the lower locking portion contacts the upper end of the vertical side 81 of the additional lower case locking element 8. The tip of the lower bent side 74 moves away from the upper surface of the bottom 60 of the lower case stopper 6 along with the movement, and the first portion of the tip portion 720 of the lower locking portion is moved. The upper surface of the portion 720A abuts against the tip of the upper horizontal side 63 from below, and the tip of the intermediate horizontal side 82 of the additional lower case stopper element 8 is the first portion 74A above the lower bent side 74 of the inclined posture. It moves relatively from the state which contacted, and contacts the lower 2nd site | part 74B (FIG. 8, FIG. 10).

As shown in FIGS. 8 and 10, the locking position of the lower locking portion of the case plate 7 with respect to the lower locked portion (the lower case locking material 6 and the additional lower case locking element 8) is the second locking. Position. At the second locking position, the tip of the intermediate horizontal side 82 of the additional lower case stopper element 8 is in contact with the inclined surface of the second portion 74B of the lower bent side 74 in the inclined posture (contact point P1). ), The tip of the upper horizontal side 63 of the lower case stopper 6 is in contact with the upper surface of the first part 720A of the tip part 720 in the tilted position (contact point P2), and the first part of the tip part 720 in the tilted position The upper end of the vertical side 81 (high profile portion 810) of the additional lower case stopper element 8 is in contact with the lower surface of the two portions 720B (contact point P3). That is, in the second locking position, the lower locking portion is in contact with the lower locked portion at three points. In the second locking position, the lower locking portion (the tip portion 720, the lower bent side 74) is in the second posture. The inclination angle (see FIG. 10) in the second posture of the lower locking portion when the horizontal plane is 0 degree (see FIG. 10) is smaller than the inclination angle (see FIG. 9) in the first posture with respect to the horizontal.

The lower locking portion moves from the first locking position to the second locking position according to the behavior of the round case when the locking state of the upper end of the case plate 7 (round case) is released. The behavior of the round case is expanded by elastic recovery from the upper and lower locked states (acts so that the upper end of the round case moves forward with the lower end of the round case as a fulcrum), and forward and downward rotation due to its own weight Further expansion due to its own weight (depending on the relationship between rigidity / elastic force and its own weight) can be included. Although the case plate 7 can be deformed so as to be further opened from the state of FIG. 8 due to the relationship between the rigidity and the own weight, the lower locking portion and the lower engaged portion in which the weight of the case plate 7 is in the second locking position. Even when acting on the stopper, the upper surface of the first portion 720A of the tip portion 720 of the lower locking portion contacts the lower surface of the upper horizontal side 63 at the contact point P2, and the first portion 720 of the tip portion 720 of the lower locking portion. The second posture of the lower locking portion is maintained by the lower surface of the two portions 720 </ b> B coming into contact with the upper end of the vertical side 81 at the contact point P <b> 3, and upward on the tip side of the lower inclined portion 72 of the case plate 7. Rotation (upward slipping) is restricted. In addition, the tip of the intermediate horizontal side 82 comes into contact with the inclined surface of the lower bent side 74 of the lower side locking part at the contact point P1, so that the second side of the lower side locking part at the second locking position is reached. Movement to the side (the direction to exit) is restricted.

As described above, when the upper locking state of the case plate 7 is released, the lower locking portion moves from the first locking position to the second locking position according to the behavior of the case plate 7, The upper surface of the first portion 720A of the distal end portion 720 of the side locking portion is in contact with the lower surface of the upper horizontal side 63 at the contact point P2, and the lower surface of the second portion 720B of the distal end portion 720 of the lower locking portion is the vertical side 81. The second inclined posture of the lower locking portion is maintained by abutting with the upper end of the lower end of the lower end portion of the case plate 7, and the upper inclined side of the lower inclined portion 72 of the case plate 7 is rotated upward (disengaged upward). In addition, the tip of the intermediate horizontal side 82 comes into contact with the inclined surface of the second portion 74B of the lower bent side 74 of the lower side locking portion at the contact point P1, so that the second locking position is reached. The movement of a certain lower locking portion to the second side (the direction of withdrawal) is restricted, and thus the second locking position of the lower locking portion is maintained, Fall case plate 7 engaged state side is out is prevented.

Another embodiment of the present invention will be described with reference to FIGS. In another embodiment, after the lower locking portion of the case plate 7 is locked to the lower case stopper 6 ', an additional lower case fixing element 8' is provided on the lower case stopper 6 '. The case plate is prevented from falling when the upper side of the case plate is released. That is, a lower locked portion is formed from the lower case stopper 6 'and the additional lower case stopper element 8'.

The lower case stopper 6 ′ is a long material extending in the opening width direction. As shown in FIGS. 12 and 15, in the cross-sectional view or the side view, the horizontal base 60 ′ and the base 60 ′ The first vertical side 61 ′ rising vertically from the first side end, the second vertical side 62 ′ rising vertically from the second side end of the bottom side 60 ′, and the first vertical side 61 ′ from the upper end of the first vertical side 61 ′ And a short upper horizontal side 63 ′ extending horizontally toward the second side. In the illustrated embodiment, the second vertical side 62 ′ is taller than the first vertical side 61 ′, and the height dimension of the second vertical side 62 ′ is higher than the height dimension of the first vertical side 61 ′. Is also big. The extension dimension of the upper horizontal side 63 ′ is smaller than the width dimension of the bottom side 60 ′. An opening is formed between the tip of the upper horizontal side 63 'and the tip of the second vertical side 62' to receive the lower locking portion of the case plate 7, and the inside of the lower case stopper 6 'is formed from the opening. The lower locking portion of the case plate 7 is received in the space. The lower case stopper 6 ′ is attached by fixing (for example, welding) the first vertical side 61 ′ to the second vertical surface 43 of the attachment member 4.

The additional lower case stopper element 8 ′ is a screw, and the screw is locked at a position below the second vertical side 62 ′ of the lower case stopper 6 ′ (in the pre-locking position on the lower case stopper 6 ′). Attached to a portion corresponding to the position of the lower bent side 74) so as to extend horizontally from the second side toward the first side. The position of the tip of the screw of the additional lower case stopper element 8 ′ extends to a position close to the vertical plane passing through the tip of the upper horizontal side 63 ′ of the lower case stopper 6 ′ (the tip of the upper horizontal side 63 ′). On the other hand, the tip of the screw is slightly located on the second side). At least one screw, preferably a plurality, is attached to one case plate 7 as the additional lower case stopper element 8 ′.

The initial locking between the lower locking portion of the case plate 7 (the lower bent side 74 and the tip portion 720 of the lower inclined portion 72) and the lower case stopper 6 'will be described. As shown in FIG. 12, the tip portion 720 and the lower bent side 74 of the lower inclined portion 72 are removed from the opening between the upper horizontal side 63 ′ and the second vertical side 62 ′ of the lower case stopper 6 ′. The tip of the lower bent side 74 of the lower locking portion is inserted and locked onto the bottom side 60 'of the lower case stopper 6'. The lower surface of the second portion 720B of the inclined tip portion 720 of the lower locking portion is in contact with the upper end of the second vertical side 62 ′ of the lower case stopper 6 ′. By attaching the additional lower case stopper element 8 ′ to the lower case stopper 6 ′, the lower locking portion of the case plate 7 changes from the pre-locking position to the first locking position.

At the pre-locking position, when the additional lower case stopper element 8 ′ is attached to the lower case stopper 6 ′, the tip of the screw comes into contact with the lower bent side 74 of the case plate 7 at the pre-locking position. By pushing into the first side, the lower locking portion of the case plate 7 moves from the pre-locking position to the first locking position (FIGS. 11, 13, and 15). The state where the upper locking portion of the case plate 7 is locked to the upper case stopper 5 and the lower end locking portion of the case plate 7 is locked to the lower locked portion at the first locking position is a normal state. It will be in an attachment state (FIG. 11).

As shown in FIG. 15, in the first locking position, at the lower locking portion of the case plate 7, the tip of the lower bent side 74 contacts the upper surface of the bottom 60 'of the lower case stopper 6'. The tip of the screw constituting the additional lower case stopper element 8 ′ is in contact with the inclined surface of the first portion 74A of the lower bent side 74 in the inclined posture, and the tip portion 720 in the inclined posture. The upper end of the second vertical side 62 'of the lower case stopper 6' is in contact with the lower surface of the second portion 720B. Thus, in the illustrated embodiment, the lower locking portion (the tip portion 720, the lower bent side 74) of the case plate 7 is the lower locked portion (the lower case stopper 6 ′, the additional lower case). It is locked to the stop element 8 ') at three points. The upper surface of the first portion 720A of the distal end portion 720 and the upper horizontal side 63 ′ of the lower case stopper 6 ′ are separated from each other. In the first locking position, the lower surface of the second portion 720B of the tip portion 720 in the inclined posture may be separated from the upper end of the second vertical side 62 ′ of the lower case stopper 6 ′.

In the attached state of FIG. 15, when the upper bent side 73 of the case plate 7 is detached from the upper vertical side 53 of the upper case stopper due to vibration or the like, the case plate 7 that has been elastically deformed in the locked state expands. And return to the front (in the direction away from the upper case stopper 5, that is, the second side) and rotate downward under its own weight.

At this time, the lower end portion of the lower locking portion 72 is in contact with the lower surface of the second portion 720B of the distal end portion 720 of the lower inclined portion 72 and the upper end of the second vertical side 62 'of the lower case stopper 6'. 720 moves so that the inclination gradient becomes smaller, and with the movement, the tip of the lower bent side 74 is separated from the upper surface of the bottom side 60 'of the lower case stopper 6', and the tip of the lower locking portion The upper surface of the first portion 720A of the portion 720 contacts the tip of the upper horizontal side 63 ′ from below, and the tip of the screw of the additional lower case stopper element 8 ′ is located on the upper side of the inclined lower bent side 74. It moves relatively from the state in contact with the first part 74A and comes into contact with the lower second part 74B (FIGS. 14 and 16).

14 and 16, in the second locking position of the lower locking portion of the case plate 7 with respect to the lower locked portion (lower case locking material 6 ′, additional lower case locking element 8 ′). The tip of the screw of the additional lower case stopper element 8 ′ is in contact with the inclined surface of the second portion 74B of the lower bent side 74 of the lower locking portion in the inclined posture (contact point P1), The tip of the upper horizontal side 63 ′ of the lower case stopper 6 ′ is in contact with the upper surface of the first portion 720 A of the tip portion 720 of the lower locking portion in the inclined posture (contact point P 2). The upper end of the second vertical side 62 ′ of the lower case stopper 6 ′ is in contact with the lower surface of the second portion 720B of the tip portion 720 of a certain lower locking portion (contact point P3). That is, in the second locking position, the lower locking portion is in contact with the lower locked portion at three points. In the second locking position, the lower locking portion (the tip portion 720, the lower bent side 74) is in the second posture. The inclination angle (see FIG. 16) in the second posture of the lower locking portion when the horizontal plane is 0 degree (see FIG. 16) is smaller than the inclination angle (see FIG. 15) in the first posture with respect to the horizontal.

The case plate 7 can be deformed so as to be further opened from the state of FIG. 14 due to the relationship between the rigidity and the own weight, but the lower locking portion and the lower engaged portion where the weight of the case plate 7 is in the second locking position. Even if it acts on the stopper, the upper surface of the first part 720A of the tip part 720 of the lower locking part contacts the lower surface of the tip of the upper horizontal side 63 ′ at the contact point P2, and the tip part of the lower locking part Since the lower surface of the second portion 720B of 720 contacts the upper end of the second vertical side 62 ′ at the contact point P3, the second inclined posture of the lower locking portion is maintained, and the lower inclined portion of the case plate 7 The upward rotation (disengagement upward) of the distal end side of 72 is restricted. Further, the lower end of the second locking position is brought into contact with the inclined surface of the lower bent side 74 of the lower locking portion by the contact of the tip of the screw of the additional lower case locking element 8 'at the contact point P1. The movement of the locking portion toward the second side (the direction of pulling out) is restricted.

As described above, when the upper locking state of the case plate 7 is released, the lower locking portion moves from the first locking position to the second locking position according to the behavior of the case plate 7, The upper surface of the first portion 720A of the distal end portion 720 of the side locking portion is in contact with the lower surface of the distal end of the upper horizontal side 63 ′ at the contact point P2, and the lower surface of the second portion 720B of the distal end portion 720 of the lower locking portion is By making contact with the upper end of the second vertical side 62 'at the contact point P3, the second inclined posture of the lower locking portion is maintained, and the tip side of the lower inclined portion 72 of the case plate 7 is rotated upward. (Disengagement upward) is restricted, and the tip of the screw of the additional lower case stopper element 8 ′ contacts the inclined surface of the lower bent side 74 of the lower locking portion at the contact point P1, The movement of the lower locking portion in the second locking position to the second side (the direction in which the lower locking portion is pulled out) is restricted, and thus the second locking position of the lower locking portion. There is maintained, dropping of the case plate 7 above the locked state is out is prevented.

5 Upper case stopper 6 Lower case stopper (first member)
60 Bottom (bottom)
61 First vertical side 62 Second vertical side (rising side)
63 Upper horizontal side (upper locked part)
7 Case plate (round case)
72 Lower inclined portion 720 Tip portion 720A First portion 720B Second portion 74 Lower bent side 74A First portion 74B Second portion 8 Additional lower case stopper element (second member)
81 Vertical edge (rising edge)
82 Middle horizontal side (protruding element)
8 'Additional lower case stopper element (second member, protruding element)
P1 Contact point P2 of the second bent side and lower contacted part P2 Upper surface of the first part of the tip part and contact point P3 of the upper locked part P3 Lower surface and upper part of the second part of the tip part Contact point of contact part

Claims (4)

It is a locking structure of the lower end of the round case attached by locking the upper and lower ends,
The lower locking portion of the round case plate is in the first locking position in the first posture with respect to the lower locked portion when the upper end of the round case is locked.
The lower locking portion moves from the first posture to the second posture according to the behavior of the round case when the upper end of the round case is released, and the lower locking portion Taking a second locking position that comes into contact with the lower locked portion at three points so as to restrict disengagement from the lower locked portion;
Locking structure at the lower end of the round case. The lower locking portion of the round case has an L shape from a tip portion and a lower bent side of the lower inclined portion of the round case, and the tip portion is a side closer to the lower bent side. And a second part far from the lower bent side, the lower bent side being a first part closer to the tip part and a second part far from the tip part. With parts,
The lower locked portion includes a bottom portion, an upper locked portion located above the first side of the bottom portion, an upper contacted portion at an upper end of a rising side on the second side of the bottom portion, A lower contacted portion at the tip of a protruding element that is located below the upper locked portion and the upper contacted portion and protrudes from the rising side toward the first side;
In the first locking position, a tip of the lower bent side is in contact with the bottom portion, and a first portion of the lower bent side is in contact with the lower contacted portion,
In the second locking position, the tip of the lower bent side is separated from the bottom, and the second portion of the lower bent side is in contact with the lower contacted portion, and the upper engaged The upper surface of the first part of the tip part contacts the stop part, and the lower surface of the second part of the tip part contacts the upper contacted part,
The locking structure of the lower end of the round case of Claim 1. The lower locked portion is
A bottom portion, an upper locked portion located above the first side of the bottom portion, and a rising side on the second side of the bottom portion, between the upper locked portion and the rising side A first member adapted to receive the lower locking portion from an opening;
A projecting element that extends from the second side toward the first side, and a second member that is detachably attached to the first member that has received the lower locking portion;
In the first locking position, the tip of the lower bent side abuts on the bottom portion of the first member, and the lower bent portion touches the lower contacted portion of the tip of the projecting element of the second member. The first part of the side is in contact,
In the second locking position, the tip of the lower bent side is separated from the bottom of the first member, and the second bent side of the second bent side is separated from the lower contacted portion of the second member. The upper surface of the first portion of the distal end portion is in contact with the upper locked portion of the first member, and the lower surface of the second portion of the distal end portion is formed on the second member. The upper end of the rising side, or the upper end of the rising side of the first member abuts,
The locking structure of the lower end of the round case of Claim 2. The lower locking portion is received from the opening of the first member and is in a pre-locking position with respect to the first member, and at the pre-locking position, at least of the lower bent side The tip is in contact with the bottom of the lower locked portion,
By attaching the second member to the first member, the inclined surface of the lower bent side comes into contact with the lower contacted portion of the tip of the projecting element and is pushed to the first side, The lower locking portion is the first locking position from the pre-locking position.
The locking structure of the lower end of the round case of Claim 3.

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