JP2018170433A - Security box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a screw fixing structure of a lid and a body.SOLUTION: A first member, i.e., one of a lid or a body, has a nut housing part, and a second member, i.e., the other of the lid or the body, has a screw support part for supporting a screw. The nut housing part has a pair of first fixing parts facing each other provided at an interval corresponding to the shortest distance of one lateral face of the nut and one of n lateral faces in parallel with the direction of the screw hole, where each first fixing part has a protrusion protruding toward the other first fixing part facing across the nut housing space, and has a snap fit structure for allowing insertion of the nut by widening the interval, when the nut is pushed in the housing space from the outside of the protrusion, and the second member has a holding member fitting to the opposite side of the housing space of the first fixing part when the body is closed with the lid, and holding not to spread the interval of the first fixing parts.SELECTED DRAWING: Figure 10

Description

  The present invention relates to a security box.

  A security communication device (security box) fixed to a wall surface is known. The security box has a main body and a lid, and the main body and the lid are fastened with screws. The receiving part of the screw is made of resin.

Japanese Patent Laid-Open No. 2006-126396

  There is a need to make the security box smaller. However, if the security box is made smaller, there is no room in the space in the security box, so it is desirable to make the mechanism for stopping the lid (the size of the coupling structure portion using screws) as small as possible. Here, in the case of adopting a configuration in which the screw receiving portion is made of resin, there is a problem that when the number of times of opening and closing the screw is increased, the resin is worn and the screw is easily detached. Therefore, we propose a small lid stopper mechanism that uses commercially available general-purpose screws and nuts and can satisfy the ease of manufacturing / cost.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.

(1) According to one aspect of the present invention, a security box is provided. This security box includes a lid and a main body. The first member, which is one of the lid and the main body, has a nut storage portion that stores an n-angle (n is an integer of 3 or more) nut, and is the other of the lid and the main body. The second member has a screw support portion for supporting a screw, and the nut storage portion includes one side surface among n side surfaces of the nut and n sides parallel to the screw hole direction of the nut. A pair of first fixing portions facing each other provided at an interval corresponding to the shortest distance between the one side surface and the side farthest from the one side surface, each of the first fixing portions being accommodated by the nut A convex portion projecting toward the other first fixed portion facing the storage space, and when the nut is pushed into the storage space from the outside of the convex portion, the pair of first Snap fit that allows the nut to be inserted with a wide interval between the fixed parts A pair of first fixing parts having a structure, and when the lid is closed to the main body, the second member is fitted to the opposite side of the storage space of the pair of first fixing parts, A holding member that holds the pair of first fixing portions from the outside so as not to widen is provided.
When fastening with a screw, the nut rotates due to the rotation of the screw and widens the distance between the pair of first fixing portions, so that the nut may come off from the storage space. According to this aspect, when the lid is closed, the holding member of the second member holds down so that the interval between the pair of first fixing portions does not increase due to the rotation of the nut, so that the interval between the pair of first fixing portions increases. The nut is hard to come off. In addition, when the lid is not closed, the first fixing portion has a snap-fit structure, and the pressing member of the second member does not press the first fixing portion. Easy to store in the storage. In addition, since general-purpose screws and nuts that are commercially available as screws and nuts can be used, manufacturing is easy and cost can be satisfied.

(2) In the above aspect, n may be an even number, and the pair of first fixing portions may be provided at an interval corresponding to the two-surface width of the nut.
According to this embodiment, since n is an even number, the side surface of the nut and the surface of the first fixing portion on the storage space side can be made substantially parallel, and the nut can be stabilized by the pair of first fixing portions. In addition, the size of the two-surface width is defined as one side surface among the n side surfaces and one side surface farthest from the one side surface among n sides parallel to the direction of the screw hole of the nut. Equal to the shortest distance.

(3) In the above aspect, the convex portion may include a nut mounting portion for mounting the nut before being stored in the storage space, on a side opposite to the storage space.
According to this aspect, the nut before the nut is inserted into the storage space can be placed on the nut placement portion, so that it is easy to store and insert the nut thereafter, and it is difficult to eliminate the nut particularly when the nut is small.

(4) The said form WHEREIN: The said nut mounting part may have the concave shape fitted to the shape of the said nut.
Since the side surface of the nut is easily aligned with the first fixing portion, it is possible to suppress the nut from being fixed in an unintended direction.

(5) In the above aspect, the nut storage portion may further include a second fixing portion provided so as to sandwich the storage space in the direction of the screw hole.
According to this aspect, it is possible to prevent the nut from moving in the direction along the screw hole when fastening the screw or removing the screw.

(6) In the above aspect, the pair of first fixing portions may have a rib at a base portion on the opposite side to the storage space.
According to this aspect, the pair of first fixing portions has the ribs at the base portion on the opposite side to the storage space, and thus hardly spreads on the side opposite to the storage space.

(7) In the above aspect, the first member may further include a third fixing portion that sandwiches the pressing member together with the first fixing portion when the lid is closed to the main body.
According to this aspect, since the pressing portion is prevented from spreading at the third fixing portion, it is possible to further prevent the nut from being removed.

  The present invention can be realized in various forms. For example, the present invention can be realized in the form of a security box screwing structure in addition to the security box.

It is explanatory drawing which shows the external appearance of a security box. It is explanatory drawing which shows when the cover of a security box is opened. It is explanatory drawing which shows the external appearance when a security box is seen from diagonally downward. It is explanatory drawing which shows 4-4 cross section of FIG. It is explanatory drawing which shows schematic structure of a nut and a nut accommodating part. It is explanatory drawing which shows the state which mounted the nut in the nut mounting part in the state of FIG. It is explanatory drawing which shows the state which inserted the nut in storage space. It is the figure which looked at the state of Drawing 6 and Drawing 7 from the direction (y direction) of a screw hole. It is explanatory drawing which shows the structure of the nut accommodating part vicinity when a cover is opened. It is explanatory drawing which shows the structure of the nut accommodating part vicinity when a cover is closed. It is explanatory drawing which shows schematic structure of the nut in 2nd Embodiment, and a nut accommodating part. It is explanatory drawing which shows the structure of the nut accommodating part 105 vicinity when the lid | cover 200 in 2nd Embodiment is closed.

First embodiment:
FIG. 1 is an explanatory diagram showing the appearance of the security box 10. The security box 10 is a small box that houses the authentication device and is attached to the wall 20 near the door, for example. The security box 10 includes a main body 100 and a lid 200, and the lid 200 includes a card detection unit 250. When a person receiving authentication holds the card over the card detection unit 250, authentication is performed and the door lock is unlocked. In the present embodiment, the security box 10 includes a card detection unit 250 that detects a card. However, a detection unit other than the card detection unit 250, for example, biometric authentication using a fingerprint, a palm, or a finger vein is used. You may provide a detection part.

  FIG. 2 is an explanatory diagram showing a state where the lid of the security box 10 is opened. FIG. 3 is an explanatory diagram showing an appearance when the security box 10 is viewed obliquely from below. The security box 10 has a screw 300 at a lower portion, and by loosening the screw 300, the lid 200 can be opened and the inside of the main body 100 can be accessed. In the present embodiment, a fulcrum for rotating the lid 200 is provided on the upper side of the security box 10 so that the lid 200 is opened from the bottom to the top, but the lid 200 is rotated to the left or right side of the security box 10. A fulcrum for movement may be provided, and the lid 200 may be opened to the left or right. Further, the screw 300 may be provided on the top and bottom, left and right of the lid 200, or on the top and bottom and left and right of the lid 200, so that the lid 200 is separated from the main body 100.

  FIG. 4 is an explanatory view showing a 4-4 cross section of FIG. In the present embodiment, the screw 300 is rotatably attached by a screw support portion 210 provided inside the lid 200. The screw support portion 210 is made of resin, for example. The screw 300 can be easily removed if it is small, but it can be difficult to eliminate by attaching the screw 300 to the screw support portion 210. As the screw 300, a commercially available general-purpose screw can be used. The screw 300 of this embodiment is also referred to as a “bolt”.

  FIG. 5 is an explanatory diagram showing a schematic configuration of the nut 310 and the nut storage unit 105. The nut storage portion 105 is formed in the main body 100 and includes a pair of first fixing portions 110 facing each other and two second fixing portions 120 and 125 facing each other. The nut storage portion 105 stores the nut 310 in a storage space 150 formed by being surrounded by the pair of first fixing portions 110 and the two second fixing portions 120 and 125. In the present embodiment, a small hexagonal nut having a size of several millimeters or less is used as the nut 310. If it is a hexagon nut, a commercially available general purpose nut can be used. However, the nut may be an n-corner (n is an integer of 3 or more).

  The two first fixing portions 110 are resin members, and are provided at intervals corresponding to the two-surface width of the nut 310. In the case of a hexagonal nut, the side surface of the nut 310 can be substantially parallel to the surface of the first fixing portion 110 on the storage space 150 side, so that the nut 310 can be stably held by the first fixing portion 110. This also applies to an n-corner nut with an even number n. Each of the first fixing portions 110 includes a base portion 116 fixed to the main body 100 and a convex portion 112 that protrudes toward the other opposing first fixing portion 110 on the opposite side of the base portion 116. The interval between the tops of the two convex portions 112 is smaller than the two-surface width of the nut 310. Therefore, the convex part 112 makes it difficult to remove the nut 310 stored in the storage space 150 in the z direction. A nut mounting portion 114 for mounting the nut 310 before being stored in the storage space 150 is formed on the opposite side (z direction) of the convex portion 112 from the storage space 150. The nut mounting portion 114 has a concave shape that fits with the shape of the nut 310 so that the nut 310 is stabilized when the nut 310 is mounted thereon. Further, the side surface of the nut 310 can be easily aligned with the first fixing portion 110 after the nut 310 is inserted into the storage space 150. The nut mounting portion 114 may have a shape that is stabilized by sandwiching the nut 310 with a protrusion protruding to the opposite side of the storage space 150 in addition to the concave shape. Note that the nut mounting portion 114 may not be provided. The base 116 includes a rib 118 on the side opposite to the storage space 150. By providing the rib 118, the first fixing part 110 can be hardly spread. However, the base 116 may not include the rib 118. In addition, a space in which the first fixing part 110 can expand is vacant on the opposite side (outside in the x direction) of the storage space 150 of the first fixing part 110.

  The two second fixing portions 120 and 125 are resin members, and are provided at an interval of a dimension between two facing surfaces that are perpendicular to the direction (y direction) of the screw hole 315 in the nut 310. A nut 310 can be fitted between the two second fixing portions 120 and 125. The two second fixing portions 120 and 125 prevent the nut 310 from moving in the direction along the screw hole 315 when the screw 300 is inserted into the nut 310. The height of the second fixing parts 120 and 125 in the z direction is lower than the position of the screw hole 315 in the z direction so that the screw 300 can be inserted into the screw hole 315 of the nut 310 housed in the housing space 150. In addition, in the position which does not overlap with the screw hole 315 when viewed from the direction of the screw hole 315, the height of the second fixing portions 120 and 125 may be higher than the position of the screw hole 315 in the z direction. In the present embodiment, since the two second fixing portions 120 and 125 have slightly different shapes, they are given different reference numerals, but may have the same shape.

  FIG. 6 is an explanatory view showing a state in which the nut 310 is placed on the nut placing portion 114 in the state of FIG. If the nut mounting portion 114 is provided, the nut 310 before being stored in the storage space 150 can be temporarily mounted on the nut mounting portion 114 as shown in FIG. Easy to store. In particular, when the small nut 310 is inserted, it is preferable to provide the nut mounting portion 114. The nut 310 before insertion can be stabilized, and the nut 310 can be hardly lost.

  FIG. 7 is an explanatory view showing a state in which the nut 310 is inserted into the storage space 150. When the nut 310 is pushed in the negative z direction from the outside of the convex portion 112 and pushed into the storage space 150, the pair of first fixing portions 110 are pushed by the nut 310 and are opposite to the storage space 150 (x direction). As a result, the gap between the pair of first fixing portions 110 increases, and the nut 310 is stored in the storage space 150. When the nut 310 is stored in the storage space 150, the first fixing unit 110 returns to the original state from the state in which the interval is widened by the elasticity of the first fixing unit 110. When the first fixing portion 110 returns to the original state, the projections 112 make the nut 310 difficult to remove. In other words, the first fixing part 110 has a snap-fit structure that prevents the nut 310 from being fitted and removed. Further, since the interval between the convex portions 112 of the first fixing portion 110 is smaller than the size of the nut 310, the nut 310 cannot be removed from the storage space 150 unless a force for removing the nut 310 is applied. When the nut 310 is moved in the positive z direction from the storage space 150, the first fixing portion 110 is pushed by the nut 310, spreads on the opposite side (x direction) from the storage space 150, and removes the nut 310 from the storage space 150. Can do.

  FIG. 8 is a view of the states of FIGS. 6 and 7 as seen from the direction of the screw hole 315 (y direction). The solid line is the state of FIG. 6 in which the nut 310 is placed on the nut placing portion 114, and the broken line is the state of FIG. 7 in which the nut 310 is housed in the housing space 150. When the nut 310 is inserted into the storage space 150, the first fixing portion 110 once expands in the direction indicated by the arrow (x direction), and returns to the original state after the nut 310 is stored. Further, the nut 310 housed in the housing space 150 due to the snap-fit structure of the first fixing part 110 is unlikely to be detached from the housing space 150 due to the convex portion 112.

FIG. 9 is an explanatory diagram showing a configuration in the vicinity of the nut storage portion 105 when the lid 200 is opened. FIG. 10 is an explanatory diagram showing a configuration in the vicinity of the nut storage portion 105 when the lid 200 is closed. 9 and 10, for convenience of explanation, the screw 300, the screw support portion 210, and the second fixing portion 120 on the near side are not shown. The lid 200 has a pressing member 230 made of resin. The pressing member 230 is provided at an interval at which the two first fixing portions 110 can be sandwiched from both sides in the x direction. When the lid 200 is closed, as shown in FIG. 10, the first fixing portion 110 is fitted at a position sandwiched from the opposite side (x direction) of the convex portion 112. When the lid 200 is closed, the pressing member 230 is arranged so that the first fixing portion 110 of the main body 100 does not expand on the opposite side (x direction) to the storage space 150 (FIG. 5 and the like). Press from (x direction). When the pressing member 230 is not provided, the nut 310 is rotated by the rotation of the screw 300, and the first fixing portion 110 is expanded in the x direction. As a result, the nut 310 may be detached from the storage space 150. On the other hand, when the holding member 230 is present, when the screw 300 is inserted into the screw hole 315 of the nut 310, the nut 310 is rotated by the rotation of the screw 300, and the first fixing portion 110 is to be expanded in the x direction. However, the gap between the pair of first fixing portions 110 is not widened by the pressing member 230. Therefore, when the screw 300 is fastened, the nut 310 can be hardly detached from the storage space 150.

  When the lid 200 is opened, as shown in FIG. 9, the pressing member 230 moves together with the lid 200 and is not positioned on the opposite side of the convex portion 112 of the first fixing portion 110. As a result, since the first fixing portion 110 is not pressed by the pressing member 230, it is possible to spread on the opposite side (x direction) from the convex portion 112. In the state shown in FIG. 9, the first fixing portion 110 can expand in the x direction, so that the nut 310 can be removed. The pressing member 230 may be made of metal in addition to resin.

  As described above, according to the present embodiment, the main body 100 has the pair of first fixing portions 110 that are arranged to face each other with a gap corresponding to the two-surface width of the nut 310, and each of the first fixing portions 110. The fixing portion 110 has a convex portion 112 that protrudes toward the first fixing portion 110 facing the base portion 116 of the first fixing portion of the storage space 150 in which the nut 310 is stored. Since the first fixing portion 110 has a snap-fit structure that allows the insertion of the nut 310 by increasing the interval between the first fixing portions 110 when the nut 310 is pushed from the outside of the convex portion 112. The nut 310 can be easily stored in the storage space 150 of the main body 100. The protrusion 112 makes it difficult for the nut 310 to come off the storage space 150 in a state where the nut 310 is stored in the storage space 150. Further, when the lid 200 is closed to the main body 100, the pressing member 230 is fitted to the opposite side of the storage space 150 of the two first fixing portions 110, and is pressed from the outside so that the interval between the first fixing portions 110 is not widened. Here, when the lid 200 is closed and the screw 300 is inserted into the screw hole 315 of the nut 310 to stop the lid, the nut 310 is rotated by the rotation of the screw 300 and the first fixing portion 110 is to be expanded. . However, in the present embodiment, since the pressing member 230 presses from the outside so that the interval between the first fixing portions 110 does not widen, the nut 310 can be hardly detached from the storage space 150.

  According to the present embodiment, since the nut mounting portion 114 is provided, the nut 310 before being stored in the storage space 150 is mounted on the nut mounting portion 114, so that the nut 310 is stabilized, and then the nut 310 is The nut 310 can be easily stored in the storage space 150 by being pushed into the storage space 150.

  According to this embodiment, in the direction of the screw hole 315, it has the 2nd fixing | fixed part 120,125 provided so that the storage space 150 might be pinched | interposed from ay direction. As a result, when the screw 300 is inserted into the nut 310, the nut 310 can be fixed by the second fixing portions 120 and 125 so that the nut 310 does not move in the y direction.

  According to the present embodiment, the first fixing portion 110 has the rib 118 on the base portion 116 on the side opposite to the storage space 150. By providing the rib 118, the first fixing part 110 can be hardly spread, and the nut 310 stored in the storage space 150 can be hardly removed.

Second embodiment:
FIG. 11 is an explanatory diagram showing a schematic configuration of the nut 310 and the nut storage unit 105 in the second embodiment. The difference from the first embodiment is that a third fixing portion 130 is provided. The third fixing portion 130 is on the opposite side of the storage space 150 of the first fixing portion 110 from the first fixing portion 110 at a predetermined interval. The holding member 230 (FIG. 9) can be inserted between the third fixing part 130 and the first fixing part 110.

  FIG. 12 is an explanatory diagram showing a configuration in the vicinity of the nut storage portion 105 when the lid 200 in the second embodiment is closed. In the first embodiment, the pressing member 230 presses the first fixing portion 110 from the outside so that the rotation of the nut 310 does not spread the first fixing portion 110. In the second embodiment, the third fixing portion 130 further presses the pressing member 230 so that the pressing member 230 does not spread. Therefore, when the lid 200 is closed, the nut 310 can be more easily removed than in the first embodiment. Note that when the lid 200 is opened, the first fixing portion 110 can expand. Therefore, as in the first embodiment, the nut 310 can be easily fitted into the storage space 150 or the nut 310 can be removed from the storage space 150. It can be easily removed. That is, according to the present embodiment, the nut 310 is difficult to be removed when the lid 200 is closed, and the nut 310 is fitted in the storage space 150 when the lid 200 is opened. Thus, the nut 310 can be easily removed and the nut 310 can be easily replaced.

  In the above embodiment, of the main body 100 and the lid 200, one main body 100 is the first member having the nut housing portion 105 that houses the nut 310, and the other lid 200 has the screw support portion 210 that supports the screw 300. However, the main body 100 is a second member having a screw support portion 210 that supports the screw 300, and the lid 200 has a nut storage portion 105 that stores the nut 310. You may comprise as a member.

  In the above embodiment, the nut 310 is fixed using the second fixing portions 120 and 125 so that the nut 310 does not move in the direction of the screw hole 315. Instead of providing the second fixing portions 120 and 125, the size in the direction parallel to the direction of the screw hole 315 of the first fixing portion 110 is made larger than the size in the direction parallel to the direction of the screw hole 315 of the nut 310. The first fixing part 110 may be provided with a flange that protrudes in the direction of the storage space 150 so as to sandwich the nut 310 from both sides in the direction of the screw hole 315. The movement of the nut 310 in the direction along the screw hole 315 can be suppressed by the flange.

  In the above embodiment, a hexagonal nut is used as the nut 310, but an n-angle nut (n is an integer of 3 or more) such as a triangle nut, a square nut, a pentagon nut, and a heptagon nut may be used. Note that n is preferably an even number. When n is an even number, the two first fixing portions 110 are provided at an interval corresponding to the width of the two surfaces of the nut 310, so that the side surface of the nut 310 and the surface of the first fixing portion 110 on the storage space 150 side Are substantially parallel, and the nut 310 is easily fixed by the pair of first fixing portions 110. In the case where n is an odd number, the two first fixing portions 110 have one of the n side surfaces of the nut 310 and n side portions parallel to the direction of the screw holes 315 of the nut 310. They are provided at an interval corresponding to the shortest distance between one side surface and the farthest side. In this way, the direction of the nut 310 can be fixed in a fixed direction. Here, when n is an even number, the width of the two surfaces of the nut 310 is that of one of the n side surfaces of the nut 310 and the number of n sides parallel to the direction of the screw hole 315 of the nut 310. Equal to the shortest distance between one side and the farthest side. Therefore, regardless of whether n is an odd number or an even number, the pair of first fixing portions 110 is configured so that one of the n side surfaces of the nut 310 is parallel to the direction of the screw hole 315 of the nut 310. It can be said that it is provided at an interval corresponding to the shortest distance between one side surface of the individual sides and the side farthest from the side surface.

  The present invention is not limited to the above-described embodiment, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features of the embodiments corresponding to the technical features in each embodiment described in the summary section of the invention are intended to solve part or all of the above-described problems, or part of the above-described effects. Or, in order to achieve the whole, it is possible to replace or combine as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 10 ... Security box 20 ... Wall 100 ... Main body 105 ... Nut accommodating part 110 ... 1st fixing | fixed part 112 ... Protruding part 114 ... Nut mounting part 116 ... Base 118 ... Rib 120, 125 ... 2nd fixing | fixed part 130 ... 3rd fixing Part 150: Storage space 200 ... Lid 210 ... Screw support part 230 ... Holding member 250 ... Card detection part 300 ... Screw 310 ... Nut 315 ... Screw hole 4-4 ... Cross section x ... Direction y ... Direction z ... Direction

Claims (7)

A security box,
A lid,
The body,
With
The first member which is one of the lid and the main body has a nut storage portion for storing an n-angle nut (n is an integer of 3 or more),
The second member that is the other of the lid and the main body has a screw support portion that supports a screw,
The nut storage part is
An interval corresponding to the shortest distance between one side surface among the n side surfaces of the nut and the side farthest from the one side surface among the n sides parallel to the direction of the screw hole of the nut. A pair of first fixing portions facing each other, each of the first fixing portions projecting toward the other first fixing portion facing each other across a storage space in which the nut is stored. A pair having a snap-fit structure that allows the nut to be inserted by increasing a distance between the pair of first fixing portions when the nut is pushed into the storage space from the outside of the convex portion. The first fixing part of
The second member is fitted to the opposite side of the storage space of the pair of first fixing portions when the lid is closed to the main body, and the interval between the pair of first fixing portions does not widen. So that it has a pressing member to be pressed from the outside,
Security box. The security box according to claim 1,
N is an even number;
The pair of first fixing portions are provided at an interval corresponding to the two-surface width of the nut.
Security box. The security box according to claim 1 or 2,
The convex portion includes a nut mounting portion for mounting the nut before being stored in the storage space on the side opposite to the storage space.
Security box. The security box according to claim 3,
The nut mounting portion has a concave shape that fits into the shape of the nut.
Security box. The security box according to any one of claims 1 to 4,
The nut storage portion further includes a second fixing portion provided so as to sandwich the storage space in the direction of the screw hole.
Security box. In the security box according to any one of claims 1 to 5,
The pair of first fixing portions have ribs on a base portion opposite to the storage space.
Security box. In the security box according to any one of claims 1 to 6,
The first member further includes a third fixing portion that sandwiches the pressing member together with the first fixing portion when the lid is closed to the main body.
Security box.

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