JP5082151B2 - Locking method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking method by which one member and another one can be kept locked even if a screw is turned and the members can be unlocked. <P>SOLUTION: A first sheet metal 3 having a slot and a claw is held by a second sheet metal 4 having screw holes and an opening. The claw part is made to project downward from the opening. From an outer face 2'' of one member 2 having a through-hole, a screw 5 is passed through the through-hole, the slot, and the screw holes. The two sheet metals 3, 4 are hung on the screw 5 and one member 2 and the other member 1 are made to approach each other while making the claw slide on the top face of a projection 7 of the other member 1. Gravity makes the claw enter a claw hole in the projection. With the two sheet metals 3, 4 kept in an immovable state to the projection 7, the screw 5 is turned to move the other member 1 and the two sheet metals 3, 4 toward the one member 2, to lock the first sheet metal 3 on a locking part 9a of the one member 2, and to fix the other member 1 and the two sheet metals 3, 4 immovably to the one member 2 in the lengthwise direction of the screw 5. <P>COPYRIGHT: (C)2012,JPO&amp;INPIT

Description

  The present invention relates to a method for locking a housing used in a security device or the like.

  In recent years, with the increase in crime, awareness of crime prevention has increased. Therefore, the installation of security devices such as security cameras is increasing in stores, offices, and condominiums.

  As a security device, for example, a security camera is arranged and protected inside a housing composed of a base and a cover. Not only the security camera but also many cases of security equipment are composed of a base and a cover. If the base and the cover are locked with a general screw that is commercially available, it can be easily opened as a matter of course, and the camera in the housing may be destroyed. Therefore, in order to prevent the base and the cover from being unlocked, screws and bolts that cannot be moved unless a special tool is used are widely used. In addition, when the bolt is inserted from the outside of the base and the base and the cover are locked, ratchet teeth are provided in the bolt head and the bolt hole of the cover, one end abuts on the ratchet teeth of the bolt, The other end is arranged with a ring-shaped claw member that comes into contact with the ratchet teeth provided in the bolt hole of the cover so that the bolt can only turn in one direction, that is, in the tightening direction. There is also a method of making it impossible to loosen the bolt once tightened (for example, Patent Document 1).

JP 2006-238889 A

  Recently, there are an increasing number of cases where special tools can be obtained by mail order through the network. Therefore, even if a special screw is used to lock the base and cover, and the screw cannot be turned unless a special tool is used, there is a risk that the base and cover will be easily unlocked. is there.

  Also, if you use bolts that cannot be loosened once tightened, the cover cannot be removed, so maintenance inside the security device cannot be performed, and in order to unlock the base and cover, the locking part is destroyed. There is no choice but convenience.

  The object of the present invention is that there is a risk that the base and cover will be unlocked even if a special screw or special tool is used, and it is convenient to lock the base and cover so that they will not come off again. It is to provide a locking method that solves the problem of becoming scarce.

  The present invention is a locking method that keeps a pair of members joined together. A first sheet metal having a long hole and a claw portion protruding in the same direction as the longitudinal direction of the long hole is a second sheet metal having a screw hole that is a through hole having an internal screw and an opening through which the claw portion can penetrate. To maintain a state in which a part of the elongated hole and the screw hole face each other and the claw portion protrudes downward through the opening. Next, from the outer surface of one member, a screw is passed through a through hole provided in one member, and is passed through a long hole in the first sheet metal and screwed into a screw hole in the second sheet metal. However, the first sheet metal and the second sheet metal are suspended from the screw by penetrating the screw hole and projecting toward the other member.

  And while making the claw part of the first sheet metal relatively slide on the upper surface of the protruding part provided on the other member and projecting toward the one member, the pair of members are brought close to each other, When the claw part reaches a position facing the claw hole provided on the upper surface of the projection part, the first sheet metal is lowered by gravity while the screw is relatively slid in the elongated hole, and the claw part is claw-holed. The first sheet metal and the second sheet metal holding the same are made immovable relative to the protrusion with respect to the longitudinal direction of the screw.

  By rotating the screw in a state where the first sheet metal and the second sheet metal are relatively immovable with respect to the protrusion, the other member having the protrusion, the first sheet metal, and the second sheet metal Are integrally moved toward the one member so that the first sheet metal and the second sheet metal reach a predetermined position of the one member. The first sheet metal is locked by the locking portion provided on the other member, and the other member, the first sheet metal, and the second sheet metal are fixed to the one member so as not to move with respect to the longitudinal direction of the screw. To do.

  Even if the screw is turned, the locking of the one member and the other member can be easily released while the locking of the one member and the other member is maintained.

It is a disassembled perspective view of one Embodiment of the housing | casing which has a locking mechanism concerning this invention. It is a perspective view of the inner side of a base. It is a schematic block diagram of a cover, (a) is the expansion schematic of the A section of the cover of FIG. 1, (b) is a perspective view of the outer surface of a cover. It is a schematic block diagram of the slide metal plate of FIG. It is a schematic block diagram of a guide sheet metal, (a) is a schematic diagram of the state before bending the flat plate which is a material of a guide sheet metal, (b) is a perspective view of a guide sheet metal. It is a figure explaining the procedure for latching a base and a cover, Comprising: (a) is a schematic diagram which shows a mode that a built-in body and a screw are attached to a cover, (b) is when inserting a screw into a built-in body FIG. It is a cross-sectional perspective view of a housing | casing which shows a mode when it begins to insert a projection part between guides. It is a cross-sectional perspective view of a housing | casing which shows a mode when a projection part is further inserted rather than the state shown in FIG. It is a cross-sectional perspective view of a housing | casing which shows a mode when the front-end | tip of the nail | claw part of a slide sheet metal fits in the nail | claw hole of a projection part. It is a cross-sectional perspective view of a housing | casing which shows a mode when a base and a cover latch. It is a perspective view of the housing | casing which shows a mode that a key is inserted from the exterior of a cover. It is a cross-sectional perspective view of a housing | casing which shows a mode when a key is inserted in the back in a cover. It is a cross-sectional perspective view of a housing | casing which shows a mode when the latching of a base and a cover remove | deviated.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the same number is attached | subjected to the structure which has the same function in an accompanying drawing, and the description may be abbreviate | omitted.

  FIG. 1 is an exploded perspective view of an embodiment of a housing having a locking mechanism according to the present invention, and FIG. 2 is a perspective view of the inside of a base. 3A and 3B are schematic configuration diagrams of the cover, in which FIG. 3A is an enlarged schematic view of a portion A of the cover of FIG. 1, and FIG. 3B is a perspective view of the outer surface of the cover. FIG. 4 is a schematic configuration diagram of the slide sheet metal of FIG. 5A and 5B are schematic configuration diagrams of the guide sheet metal, in which FIG. 5A is a schematic view of a state before bending a flat plate that is a material of the guide sheet metal, and FIG. 5B is a perspective view of the guide sheet metal.

  Note that the casing described here is not limited to a specific application, and may be anything as long as the cover (one member) and the base (the other member) of the casing are opened and closed.

  A hollow casing having an internal space is composed of a pair of members fixed to each other, that is, a base 1 and a cover 2. As a member used for a locking mechanism for preventing the base 1 and the cover 2 from being unlocked, a slide sheet metal 3 that is a first sheet metal, a guide sheet metal 4 that is a second sheet metal, and a screw 5 Are used.

  The base 1 will be described in detail. The base 1 has an outer surface 1 ″ and an outer wall 1 ′ surrounding the outer surface 1 ″, and has a box shape in which one surface is open. As shown in FIG. 2, the base 1 is provided with a protrusion 7 that protrudes from the inside of the outer wall 1 ′ of the base 1 beyond the outer wall 1 ′. The tip 7a of the protrusion 7 has a tapered shape that tapers toward the surface where the protrusion 7 is in contact with the outer wall 1 '. And the claw hole 7b is provided in the front-end | tip part 7a.

  Next, the cover 2 will be described in detail. The cover 2 has an outer surface 2 ″ and an outer wall 2 ′ surrounding the outer surface 2 ″, and has a box shape in which one surface is open. As shown in FIG. 3 (a), the outer wall 2 ′ of the cover 2 protrudes vertically from the inside of the outer wall 2 ′ at a position corresponding to the protrusion 7 of the base 1, and from the outer surface 2 ″ to the outer wall 2 ′. Two guides 9 extending in the direction toward the front end of the head are provided in parallel with a distance therebetween. The distance between the guides 9 is substantially the same as the width of the protrusion 7 of the base 1, and the protrusion 7 of the base 1 can be inserted between the guides 9 along the guide 9. Furthermore, each guide 9 is provided with a groove 9a. The groove 9a serves as a locking portion for locking the slide metal plate 3. Further, on the side of the two guides 9 that are not opposed to each other, a side wall 10 that is parallel to the guide 9 and protrudes from the guide 9 is provided. Further, as shown in FIG. 3 (b), the outer surface 2 ″ of the cover 2 is provided with a recess 11, and a screw hole 11 a that is a through hole penetrating the cover 2 is provided at the center of the recess 11. It has been. Further, an insertion port 12 penetrating the cover 2 is provided on the outer surface 2 ″ of the cover 2 at a position between the one guide 9 and the one side wall 10.

  Note that the distance from the tip of the outer wall 1 ′ of the base 1 to the claw hole 7 b of the protrusion 7 is substantially equal to the distance from the tip of the outer wall 2 ′ of the cover 2 to the groove 9 a.

  Next, the slide sheet metal 3 will be described in detail. As shown in FIG. 4, the slide metal plate 3 has three rectangular flat plates having different long sides, and a flat plate having the longest second side along the long side of the longest long plate. Furthermore, it has a shape in which flat plates with the shortest long sides are arranged. That is, a two-step portion 3 a is formed on the slide sheet metal 3. The flat plate portion with the shortest long side becomes the claw portion 3c, the flat plate portion with the second longest side becomes the fitting portion 3b, and the flat plate portion with the longest long side becomes the hook portion 3d. The width of the claw portion 3c is the same as that of the claw hole 7b provided in the protrusion 7 of the base 1, and the claw portion 3c can be inserted into the claw hole 7b. The height of the claw portion 3 c is lower than the height of the guide 9 of the cover 2. Further, the width of the fitting portion 3b must be larger than the interval between the guides 9 of the cover 2. Furthermore, an elongated hole-shaped opening 3e extending in the same direction as the direction in which the claw 3c protrudes is provided at the center of the slide metal plate 3. Note that the width of the slide metal plate 3, that is, the width of the hanging portion 3 d is smaller than the width between the side walls 10 of the cover 2. Further, the thickness of the slide metal plate 3 is smaller than the width of the groove 9 a of the guide 9 of the cover 2.

  Next, the guide sheet metal 4 will be described in detail.

  As shown in FIG. 5B, the guide sheet metal 4 has a configuration in which a rectangular flat plate-like material is bent in two. The flat plate material of the guide sheet metal 4 is provided with a notch 4a on one long side, an opening extending in a direction parallel to the short side at the center, and a fitting part 3b and a claw part 3c of the slide sheet metal 3 are provided. A slide sheet metal hole 4b to be inserted is provided, and two holes 4c, which are through holes in which screw grooves are formed, are further provided. In other words, the flat plate material of the guide sheet metal 4 has a line-symmetric shape at the center of the long side. And this flat plate is along the long side along the two long sides (side parallel to the short side of the guide metal plate 4) of the slide metal plate hole 4b or at a position spaced from the two long sides, The guide sheet metal 4 is formed by being bent in a direction in which the holes 4c approach each other. The slide sheet metal 3 is disposed in the gap 13 formed by bending, and the slide sheet metal 3 is held by the guide sheet metal 4. Further, the width of the guide metal plate 4 (the length of the short side in FIG. 4A) is smaller than the width of the side walls 10 of the cover 2. Further, the width of the guide sheet metal 4 at the position where the notch 4 a is provided is smaller than the width of the slide sheet metal 3. The thickness of the guide metal plate 4 in the actual usage form is the thickness of the flat plate × 2 + the thickness of the gap 13, and this value is larger than the width of the groove 9 a of the guide 9 of the cover 2.

  The screw 5 used in the present embodiment does not need to be a special screw, and may be a normal commercially available screw.

  Next, a procedure for actually locking the base 1 and the cover 2 will be described.

  First, the slide sheet metal 3 is inserted into the gap 13 of the guide sheet metal 4 from the notch 4a of the guide sheet metal 4 so that a part of the hanging portion 3d of the slide sheet metal 3 is exposed, and slides from the slide sheet metal hole 4b of the guide 4. It arrange | positions on the guide 9 of the cover 2 in the state which the fitting part 3b and the nail | claw part 3c of the sheet metal 3 protruded (refer FIG. 6). At this time, it arrange | positions so that the notch 4a of the guide sheet metal 4 may be located in the direction in which the insertion port 12 of the cover 2 mentioned above is provided. Hereinafter, a state in which the slide metal plate 3 is inserted into the gap 13 of the guide metal plate 4 is referred to as an “integrated body 20”. Then, the built-in body 20 is arranged on the upper surface of the guide 9 on the tip 2 ′ side of the cover 2 relative to the groove 9a so as to be perpendicular to the direction in which the guide 9 extends, and between the guides 9 The claw portion 3c is disposed. At this time, the fitting portion 3 b of the slide metal plate 3 is in contact with the upper surface of the guide 9.

  In this state, the screw 5 is inserted from the outer surface 2 '' of the cover 2 through the screw hole 11a of the recess 11, and the tip of the screw 5 passes through the hole 4c of the guide metal plate 4 and the opening 3e of the slide metal plate 3. Let That is, the tip of the screw 5 penetrates the built-in body 20 and protrudes toward the base 1. Moreover, since the screw groove is dug in the hole 4c of the guide sheet metal 4, when the screw 5 is turned in the tightening direction, the built-in body 20 moves in the direction of the groove 9a, and when the screw 5 is turned in the loosening direction, the screw is assembled. The body 20 moves in the direction opposite to the groove 9a. Since the built-in body 20 is disposed between the side walls 10 of the cover 2, the guide metal plate 4 collides with the side wall 10 when the screw 5 is rotated. It does not rotate with the screw 5.

  Next, without rotating the screw 5, the tip 7 a of the protrusion 7 of the base 1 is inserted between the guides 9 along the inside of the outer wall 2 ′ of the cover 2 as shown in FIG. Go. When the protruding portion 7 is inserted as it is, the slide metal plate 3 has the elongated hole-shaped opening 3e extending in the same direction as the direction in which the claw portion 3c protrudes, so that the tapered shape of the distal end portion 7a of the base 1 is formed. The claw portion 3c of the slide metal plate 3 is lifted along the surface that has been removed (see FIG. 8). When the projection 7 is further inserted, the tip of the tab 3c of the slide metal plate 3 is fitted into the tab 7b of the projection 7 of the base 1 by its own weight (see FIG. 9). In this state, when the screw 5 is rotated in the tightening direction, the claw portion 3c of the slide metal plate 3 is fitted in the claw hole 7b of the projection portion 7, so that the built-in body 20 and the base 1 move together in the direction of the groove 9a. .

  When the screw 5 is further rotated in the tightening direction, the outer wall 1 ′ of the cover 1 and the outer wall 2 ′ of the base 2 come into contact with each other, and the slide sheet metal hole of the guide sheet metal 4 is inserted into the gap 9 a of the guide 9 of the cover 2. The slide metal plate 3 falls from 4b by its own weight, and the fitting portion 3b is fitted. At this time, the claw portion 3c of the slide metal plate 3 is not only inserted into the claw hole 7b of the base 1 but completely fitted (see FIGS. 10A and 10B). Then, by further rotating the screw 5 in the tightening direction, the base 1 and the cover 2 come into strong contact with each other, and the fitting portion 3b of the slide metal plate 3 fitted in the groove 9a of the guide 9 forms the groove 9a. The guide 9 is in strong contact with the surface of the guide 9 facing the tip of the outer wall 2 ′. This prevents the screw 5 from loosening. Since the width of the guide sheet metal 4 is larger than the width of the groove 9, it does not fit into the groove 9.

  As described above, the locking (locking) of the base 1 and the cover 2 is completed. In this state, even if the screw 5 is tightened or loosened, the slide metal plate 3 is fitted in the groove 9a of the guide 9 and is inserted into the claw hole 7b of the protrusion 7 of the base 1. Since the tab 3c of the slide metal plate 3 is fitted, the base 1 and the cover 2 cannot be unlocked.

  Next, a procedure for unlocking the base 1 and the cover 2 will be described.

  A key 30 is used to unlock (unlock) the base 1 and the cover 2. The key 30 is a trapezoidal flat plate in which two adjacent corners are at right angles, and the sides where both ends are not perpendicular form a tapered portion 30a of the key 30 (see FIG. 12).

  First, the screw 5 is loosened a little. As described above, the insertion surface 12 is provided in the outer surface 2 ″ of the cover 2, and the key 30 is inserted from the insertion port 12 (see FIG. 11).

  As the key 30 is inserted from the insertion opening 12, the tapered portion 30a at the tip of the key 30 and the hook portion 3d of the slide metal plate 3 exposed from the notch 4a of the guide metal plate 4 come into contact with each other. When the key 30 is further inserted, the slide metal plate 3 is lifted along the tapered portion 30 a of the key 30. Then, the claw portion 3 c of the slide sheet metal 3 is detached from the claw hole 7 b of the protrusion portion 7 of the base 1. In this state, the base 1 and the cover 2 can be unlocked by moving the base 1 in the direction opposite to the cover 2.

  By doing so, the base 1 and the cover 2 can be locked using commercially available screws and tools. Once the base 1 and the cover 2 are locked, the base 1 and the cover 1 can be turned even if the screw is turned. The cover 2 cannot be unlocked. Therefore, the crime prevention property of the crime prevention device can be improved. Further, since the lock between the base 1 and the cover 2 can be released with the key 30, maintenance and the like can be easily performed. For example, in the case of a security device, even if a user other than the user or administrator of the security device has the key 30, there is a possibility that the base 1 and the cover 2 are unlocked. Therefore, the key 30 must be strictly managed by a user or an administrator.

  Since the present invention is a lock mechanism that locks the base 1 and the cover 2 using the weight of the slide metal plate 3, the lock mechanism can be used mainly for a housing that is used over a wall. However, instead of using the weight of the slide metal plate, the lock mechanism of the present invention can be used for any housing by pressing the slide metal plate 3 and the guide metal plate 4 against the guide 9 of the cover 2 with a spring or the like. be able to.

  A part or all of the above-described embodiment can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1) A locking method for keeping a pair of members joined to each other,
A first sheet metal having a long hole and a claw portion protruding in the same direction as the longitudinal direction of the long hole, a second metal plate having a screw hole that is a through hole having an internal screw and an opening through which the claw portion can pass. And holding the state where the claw portion protrudes downward through the opening while a part of the elongated hole and the screw hole are opposed to each other,
From the outer surface of one member, a screw is passed through a through hole provided in the one member and through the long hole of the first sheet metal, and is screwed into the screw hole of the second sheet metal. The first sheet metal and the second sheet metal are suspended from the screw by penetrating the screw hole and projecting toward the other member.
The pair of members approach each other while the claw portion of the first sheet metal is relatively slid on the upper surface of the protrusion provided on the other member and protruding toward the one member. Then, when the claw portion reaches a position facing a claw hole provided on the upper surface of the projection, the first sheet metal is subjected to gravity while sliding the screw relatively in the elongated hole. The claw portion is caused to descend into the claw hole and the first metal plate and the second metal plate holding the claw portion are immovable relative to the protrusion in the longitudinal direction of the screw. West,
By rotating the screw in a state where the first sheet metal and the second sheet metal cannot move relative to the protrusion, the other member having the protrusion and the first member are rotated. The sheet metal and the second sheet metal are integrally moved so as to approach further toward the one member,
When the first sheet metal and the second sheet metal reach a predetermined position of the one member, the first sheet metal is engaged by a locking portion provided at the predetermined position of the one member. And locking the other member and the first sheet metal and the second sheet metal with respect to the one member so as to be immovable with respect to the longitudinal direction of the screw. .

  (Supplementary Note 2) By lifting only the first member with a key member and allowing the claw portion to escape from the claw hole, the first sheet metal and the second sheet metal that holds the first sheet metal are moved in the longitudinal direction of the screw. The locking method according to supplementary note 1, wherein the lock can be released by allowing movement relative to the protrusion with respect to the direction.

  (Additional remark 3) The lock method of Additional remark 2 which inserts the said key member from the insertion port provided in said one member at the time of lock release.

  (Supplementary Note 4) The side portion of the first sheet metal is at least partially exposed from the side portion of the second sheet metal, and the key member is moved to the second side of the first sheet metal when the lock is released. 4. The locking method according to appendix 3, wherein the portion is exposed to a portion exposed from a side portion of the sheet metal.

  (Additional remark 5) The claw part which protruded from the said opening of the said 2nd sheet metal, and the said protrusion part of the said other member are located between the two guides provided at intervals in said one member The locking method according to any one of appendix 1 to appendix 4.

  (Supplementary note 6) The locking method according to supplementary note 5, wherein a groove is provided in the guide of the one member as the locking portion so that the first sheet metal is fitted.

  (Appendix 7) The second sheet metal is disposed between two side walls respectively provided on the side of the guide of the one member, and the second sheet metal is rotated by the side wall along with the rotation of the screw. The locking method according to appendix 5 or 6, wherein blocking is performed.

(Supplementary Note 8) A lock mechanism that keeps a pair of members joined to each other,
A first sheet metal having a long hole and a claw portion protruding in the same direction as the longitudinal direction of the long hole;
A second metal plate having a screw hole that is a through hole having an inner screw and an opening through which the claw portion can pass, and capable of holding the first metal plate;
From the outer surface of one member, it penetrates the through hole provided in the one member, penetrates the long hole of the first sheet metal, and is screwed into the screw hole of the second sheet metal By penetrating through the screw hole and projecting toward the other member, the first sheet metal and the second sheet metal are arranged such that a part of the elongated hole and the screw hole face each other, and the claw portion opens the opening. A screw that can be suspended while maintaining a state of protruding downward via,
A projection provided on the other member and projecting toward the one member, and opposed to the claw portion of the first sheet metal projecting downward through the opening of the second sheet metal An upper surface at a position where the first sheet metal and the second sheet metal holding the upper sheet metal are held with respect to the protrusion in the longitudinal direction of the screw. And a protrusion having a claw hole that is relatively immovable,
The first sheet metal is provided at a predetermined position of the one member, and the first sheet metal and the second sheet metal holding the first sheet metal are immovable with respect to the longitudinal direction of the screw. A locking portion to be fixed to
Having a locking mechanism.

  (Supplementary Note 9) An unlocking key that comes into contact with the first sheet metal in a state in which the claw part has entered the claw hole and lifts the first sheet metal to cause the claw part to escape from the claw hole. The locking mechanism according to appendix 8, further comprising a member.

  (Supplementary note 10) The lock mechanism according to supplementary note 9, wherein the one member is provided with an insertion port into which the key member can be inserted.

  (Supplementary Note 11) The second sheet metal is provided with a notch so that a part of the side portion of the first sheet metal is exposed from the second sheet metal while the first sheet metal is held. The lock mechanism according to any one of appendix 8 to appendix 10.

  (Supplementary note 12) The locking mechanism according to any one of Supplementary notes 8 to 11, wherein two guides are provided on the one member with an interval in which the protrusion of the other member can be inserted. .

  (Supplementary note 13) The lock mechanism according to supplementary note 12, wherein a groove into which the first sheet metal is fitted is provided in the guide as the locking portion.

  (Supplementary note 14) The locking mechanism according to supplementary note 12 or supplementary note 13, wherein a side wall having an interval at which the second sheet metal can be arranged is provided on a side portion of the guide of the one member.

  (Supplementary note 15) The lock mechanism according to supplementary note 9, wherein the tip of the key member has a tapered shape.

DESCRIPTION OF SYMBOLS 1 Base 1 'Outer wall of base 1''Outer surface of base 2 Cover 2' Outer wall of cover 2 '' Outer surface of cover 3 Slide sheet metal 3a Notch 3b Fitting 3c Claw 3d Hang 3e Opening 4 Guide sheet 4a Notch 4b Slide plate hole 4c Hole 7 Projection 7a Tip 7b Claw hole 9 Guide 9a Groove 10 Side wall 11 Recess 11a Screw hole 12 Insertion port 13 Clearance 20 Built-in body 30 Key 31 Tapered part

Claims (10)

A locking method that keeps a pair of members joined together,
A first sheet metal having a long hole and a claw portion protruding in the same direction as the longitudinal direction of the long hole, a second metal plate having a screw hole that is a through hole having an internal screw and an opening through which the claw portion can pass. And holding the state where the claw portion protrudes downward through the opening while a part of the elongated hole and the screw hole are opposed to each other,
From the outer surface of one member, a screw is passed through a through hole provided in the one member and through the long hole of the first sheet metal, and is screwed into the screw hole of the second sheet metal. The first sheet metal and the second sheet metal are suspended from the screw by penetrating the screw hole and projecting toward the other member.
The pair of members approach each other while the claw portion of the first sheet metal is relatively slid on the upper surface of the protrusion provided on the other member and protruding toward the one member. Then, when the claw portion reaches a position facing a claw hole provided on the upper surface of the projection, the first sheet metal is subjected to gravity while sliding the screw relatively in the elongated hole. The claw portion is caused to descend into the claw hole and the first metal plate and the second metal plate holding the claw portion are immovable relative to the protrusion in the longitudinal direction of the screw. West,
By rotating the screw in a state where the first sheet metal and the second sheet metal cannot move relative to the protrusion, the other member having the protrusion and the first member are rotated. The sheet metal and the second sheet metal are integrally moved so as to approach further toward the one member,
When the first sheet metal and the second sheet metal reach a predetermined position of the one member, the first sheet metal is engaged by a locking portion provided at the predetermined position of the one member. And locking the other member and the first sheet metal and the second sheet metal with respect to the one member so as to be immovable with respect to the longitudinal direction of the screw. .   The first sheet metal and the second sheet metal holding the first sheet metal and the second sheet metal holding the same are lifted with respect to the longitudinal direction of the screw by lifting only the first member by the key member and allowing the nail portion to escape from the nail hole. The locking method according to claim 1, wherein the lock can be released by making it relatively movable with respect to the protrusion. A locking mechanism that keeps a pair of members joined together,
A first sheet metal having a long hole and a claw portion protruding in the same direction as the longitudinal direction of the long hole;
A second metal plate having a screw hole that is a through hole having an inner screw and an opening through which the claw portion can pass, and capable of holding the first metal plate;
From the outer surface of one member, it penetrates the through hole provided in the one member, penetrates the long hole of the first sheet metal, and is screwed into the screw hole of the second sheet metal By penetrating through the screw hole and projecting toward the other member, the first sheet metal and the second sheet metal are arranged such that a part of the elongated hole and the screw hole face each other, and the claw portion opens the opening. A screw that can be suspended while maintaining a state of protruding downward via,
A projection provided on the other member and projecting toward the one member, and opposed to the claw portion of the first sheet metal projecting downward through the opening of the second sheet metal An upper surface at a position where the first sheet metal and the second sheet metal holding the upper sheet metal are held with respect to the protrusion in the longitudinal direction of the screw. And a protrusion having a claw hole that is relatively immovable,
The first sheet metal is provided at a predetermined position of the one member, and the first sheet metal and the second sheet metal holding the first sheet metal are immovable with respect to the longitudinal direction of the screw. A locking portion to be fixed to
Having a locking mechanism.   The lock member further has a key member for unlocking which comes into contact with the first sheet metal in a state where the claw part has entered the claw hole and lifts the first sheet metal so that the claw part escapes from the claw hole. The locking mechanism according to claim 3.   The lock mechanism according to claim 4, wherein the one member is provided with an insertion port into which the key member can be inserted.   The notch is provided in the 2nd sheet metal so that a part of side part of the 1st sheet metal may be exposed from the 2nd sheet metal in the state where the 1st sheet metal was held. The locking mechanism according to any one of 3 to 5.   The locking mechanism according to any one of claims 3 to 6, wherein two guides are provided on the one member with an interval in which the protruding portion of the other member can be inserted.   The locking mechanism according to claim 7, wherein a groove for fitting the first sheet metal is provided in the guide as the locking portion.   The lock mechanism according to claim 7 or 8, wherein a side wall having an interval at which the second sheet metal can be arranged is provided on a side portion of the guide of the one member.   The lock mechanism according to claim 4, wherein a tip end of the key member has a tapered shape.

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