Key case

Abstract

The key case includes: a body having an opening, an internal space connected to the opening, a first hole and a second hole, the body receiving a key in the internal space for insertion and removal through the opening; a cover for switching the opening between a closed state and an open state; a latch having a first portion inserted into the first hole, a second portion inserted into the second hole, and a third portion connected to the first and second portions, the latch being moved to a first position for constraining the cover in a closed state and a second position for opening the cover, and the third portion being bent relative to the first and second portions when viewed along a straight line through the first and second holes while the latch is fixed in the first position; and a locking mechanism for securing the latch in the first position.

Description

Technical Field

[0001] This invention relates to a key box. Background Technology

[0002] For example, a keybox technology is known that can hold valuable objects such as keys. For instance, Patent Document 1 discloses a technology involving an improved structure for a keybox, characterized in that the front cover includes a dial lock for opening and closing the keybox and a hook-and-loop lock bar for locking / unlocking a padlock. Patent Document 2 discloses a technology involving a padlock for a keybox capable of storing vehicle keys, etc., in an electromagnetically shielded state.

[0003] Citation List

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent Application Publication JP5153749

[0006] Patent Document 2: Japanese Patent Application Publication JP6936484 Summary of the Invention

[0007] Technical issues

[0008] Patent Document 1's invention only relates to the convenience of the key box structure and is not intended to improve the maintainability and durability of the key box / padlock itself. Furthermore, Patent Document 2's invention only has an exterior with an electromagnetic shielding element for protecting valuables contained therein.

[0009] In view of the above background, the present invention provides an improved technology that has high maintainability and convenience in managing key boxes.

[0010] Solution to the problem

[0011] One aspect of this disclosure provides a key case comprising: a body having an opening, an internal space connected to the opening, and a first hole and a second hole through which a key to be stored is inserted into and removed from the internal space; a cover that transitions to a closed state or an open state of the opening; a hook having a first portion inserted into the first hole, a second portion inserted into the second hole, and a third portion connected to the first and second portions, the hook moving to a first position for constraining the cover in the closed state and a second position for opening the cover, wherein the third portion bends relative to the first and second portions when viewed along a straight line through the first and second holes while the hook is fixed in the first position; and a locking mechanism for securing the hook in the first position.

[0012] When viewed along a straight line passing through the first and second holes while the hook is fixed in the first position, the angle formed by the third part with the first and second parts can be an obtuse angle.

[0013] The hook and loop may have joint portions between the first portion and the third portion and between the second portion and the third portion, and the joint portions may rotate and bend relative to the first portion and the second portion.

[0014] The key box may include a dial for locking or unlocking the locking mechanism, and when a user operates the dial, the dial may apply a reaction force corresponding to the user's operation.

[0015] When the dial is rotated, it can produce a mechanical operating sound.

[0016] The key box may include multiple dials for locking or unlocking the locking mechanism, and the width of the multiple dials in the direction perpendicular to the rotation direction may be more than 3 cm and less than 5 cm.

[0017] Another aspect of this disclosure provides a key case comprising: a body having an opening, an internal space connected to the opening, a first upper hole and a second upper hole, through which a key to be stored is inserted into and removed from the internal space; a cover that transitions from one of a closed state and an open state of the opening to the other; and a hook having a first insertion portion inserted into the first upper hole and a second insertion portion inserted into the second upper hole, the hook being moved to a first position for constraining the cover in a closed state and a second position for opening the cover, wherein the body has: a first receiving space for receiving the first insertion portion; a second receiving space for receiving the second insertion portion; a first separating wall for separating the first receiving space from the internal space; and a second separating wall for separating the second receiving space from the internal space.

[0018] The key box may include: a first bottom hole disposed on the opposite side of the first top hole and disposed at the bottom of the first receiving space; and a second bottom hole disposed on the opposite side of the second top hole and disposed at the bottom of the second receiving space.

[0019] The key box may include a locking space, the locking space including a locking mechanism for securing the hook at the first position, wherein a first separating wall separates the first receiving space from the locking space, and a second separating wall separates the second receiving space from the locking space.

[0020] The key case may include a dial for locking the cover closed when the hook is secured in the first position.

[0021] The dial may have a rotating mechanism that rotates in one direction and in the opposite direction, and the rotation angle may be less than 360 degrees.

[0022] In this key case, with the opening closed by the cover, the internal space can be electromagnetically shielded by applying a shielding treatment to the main body.

[0023] Beneficial effects

[0024] According to the present invention, an improved technology with high maintainability and convenience in managing key boxes can be provided. Attached Figure Description

[0025] [ Figure 1[1] is a perspective view showing the appearance of the key box 1 according to an embodiment.

[0026] [ Figure 2 [This is a schematic side view of a prior art key box.]

[0027] [ Figure 3A [This is a top view of key box 1.]

[0028] [ Figure 3B [This is a side view of the key box 1 and the hook 10.]

[0029] [ Figure 4A [This is a front view showing the dial of key box 1.]

[0030] [ Figure 4B [This is a front view showing the interior of key box 1 with cover C removed.]

[0031] [ Figure 5 [This is a side view showing a comparison between key box 1 and the prior art.]

[0032] [ Figure 6A [This is a top view showing the hook 10 with the connector portion J.]

[0033] [ Figure 6B [This is a side view showing the hook 10 with the connector portion J.]

[0034] [ Figure 7 [This is a side view showing the hook 10 of a modified key box 1.]

[0035] [ Figure 8 [This is a front view showing the hook 10 of the key box 1 according to a variant.]

[0036] [ Figure 9 [This is a perspective view showing the appearance of the key box 21 when locked according to an embodiment.]

[0037] [ Figure 10 [Illustration 9] is a diagram showing an outline of a prior art key box 9.

[0038] [ Figure 11 [This is a perspective view showing the appearance of the key box 21 when opened according to an embodiment.]

[0039] [ Figure 12 [Illustration 1] is a cross-sectional view showing the separation wall W of the key box 21.

[0040] [ Figure 13 [Illustration 1] is a cross-sectional view of the separating wall W of a key box 21, which is another example. Detailed Implementation

[0041] 1. First Implementation Method

[0042] 1-1. Configuration

[0043] Figure 1 This is a perspective view showing the appearance of a key box 1 according to an embodiment. In this example, key box 1 (or simply key box / padlock) refers to a padlock having a key box (or padlock-type key box) capable of being locked in a state containing a specific or arbitrary key (e.g., one or more keys to a property used by a manager of a leased property). Furthermore, when locked, since both the key box and the padlock are locked, a mechanism is provided in which the key in the key box cannot be removed unless the key box body is unlocked.

[0044] Here, the operation and management method of the key box will be described using an example of a rented property. For example, the manager can attach (i.e., lock) the key box 1, which is used to enclose the keys, to an outdoor fence (in one example, wire mesh). Furthermore, when a property visitor wishes to observe the rented property, the manager can retrieve the key from the key box and guide the person to an empty room. That is, in the normal state where the property is not being observed, the manager can manage the keys on-site while ensuring security. On the other hand, when a property viewing task occurs, the manager can smoothly guide the individual to an empty room without having to carry the key. This is a convenient operating method, for example, in the case where there is no resident manager at the property. The components of the key box 1 will then be described.

[0045] In this example, the key case 1 includes a hook 10 and a body 100. In this example, the hook 10 is a metal fitting used to hook the key case onto an object (locked position) during locking. Note that this is what is called a "hook," and it typically has a U-shaped form. In this example, the hook 10 is divided into several parts: a first part 11, a second part 12, and a third part 13. Note that in this example, the first part 11, the second part 12, and the third part 13 have an integral shape, and this shape of the hook 10 is obtained, for example, by bending a rod-shaped member. In this example, the first part 11 includes a locking portion for locking a padlock (not shown), and locking is performed by engaging with the key case with the integrated lock. In this example, the second part 12 is positioned substantially parallel to the first part 11 and can engage with the key case similarly to the first part 11. Note that... Figure 1 A key case in a locked state is shown, with both the first portion 11 and the second portion 12 engaged with the key case body 100. In this example, the third portion 13 is for suspending the key case body on an object and is physically connected to the first portion 11 and the second portion 12 described above. The body 100 will now be described.

[0046] In this example, the body 100 represents the housing of the key box 1 itself. In this example, when the key box 1 is unlocked, the first part 11 is detached from the body 100, and the second part 12 rotates within the second hole H2, thereby making detachment (or attachment) from the object possible. In this example, the body 100 is provided with a first hole H1 and a second hole H2, and during locking, the first part 11 is inserted into the first hole H1.

[0047] In this example, the key box 1 has an internal space A within the body 100, which is a space for receiving the key 2. The internal space A is connected to and formed by an opening O, which is the entrance to the interior. In this example, the user can remove the key 2 from the internal space A through this opening O. Note that when locking / unlocking the padlock, i.e., when the hook 10 engages / disengages from the body 100, user operation is required, for example, according to a locking mechanism provided in the internal space A. In this example, the locking mechanism includes, for example, a mechanism for securing the hook 10 at its engagement position with the body 100 (an example of a first position). More specifically, it is a mechanism in which engagement / disengagement of the hook 10 from the body 100 is performed, for example, by a latch (not shown) operable only from the internal space A. Details will be described later.

[0048] In this example, the main body 100 is provided with a cover C for closing the opening O. When locked, the user inserts the key 2 into the main body 100 and then closes the cover C (or opens the cover C when the key 2 is removed). In this example, the user can lock (or unlock) the key box by operating a dial key (simplified in the accompanying drawings) attached to the front of the cover C. In this example, the cover C represents the component for opening and closing the key box, and as described above, the cover C can change the opening O to a closed or open state.

[0049] Here, the third part 13 will be described again. In this example, the boundary portion between the third part 13 and the first part 11 and the second part 12 has a structure in which, at the position where the hook 10 is fixed to the body 100 (an example of the first position), when viewed from a straight line (not shown) passing through the first hole H1 and the second hole H2, the third part 13 is curved relative to the first part 11 and the second part 12. The arrangement and function of the third part 13, including the aforementioned boundary portion, will be described later. Next, the problem of key boxes in the related art will be described.

[0050] Figure 2This is a schematic side view illustrating a key box in the prior art. In this example, key box 9 (or body 900) represents a key box in the prior art. Here, when performing operations at the rental property as described above, key box 9 may be stored (locked) outdoors, for example, due to installation location, space, or convenience. In this case, it is locked in a state where hooks are suspended from objects such as fences, wire mesh, walls, or railings that serve as boundary lines between the rental property and its neighboring residences, parking lots (bicycle parking lots), etc. Note that these facilities are ancillary facilities that are part of the house of the corresponding rental property.

[0051] Furthermore, the fence 3, as an example of an object, has a grid-like shape and a structure comprising vertical grids 31 and horizontal grids 32a and 32b. In this example, Figure 2 The diagram shows the key box 9 locked by a hook on the fence 3. In this example, the hook 90 is hooked onto the vertical grid 31 and supported by the horizontal grid 32a, and as shown... Figure 2 As shown, viewed from the side, the key box 9 is fixed relative to the fence 3 in an inclined direction.

[0052] Here, assuming the key box is positioned outdoors as described above, Figure 2 The arrows indicate the direction of raindrops falling relative to the cover C9 of the key case. In this example, when the key case 9 is viewed from the side, if the main body 900 is fixed in an inclined direction relative to the fence 3, the cover C9 of the key case is exposed to raindrops, making it easy for rainwater to enter through gaps in, for example, the opening / closing section, the dial section, or the cover. In this example, the intrusion of rainwater can lead to corrosion of the keys enclosed in the key case and corrosion / damage to the key case / padlock itself. Therefore, the purpose of the key case 1 according to this embodiment is to solve such problems.

[0053] Figure 3A This is a top view of the key case 1. In this example, the third part 13 of the hook 10 is connected to the first part 11 and the second part 12, respectively. In this example, when viewed from above, the third part 13 is curved and therefore has a structure that protrudes behind the rear surface of the key case body (upward in the figure).

[0054] Furthermore, each intersection of the dotted and dashed lines in the figure represents the center of each of the first part 11 and the second part 12, or the center of each of the first hole H1 and the second hole H2, and also represents the boundary portion of the third part 13 with the first part 11 and the second part 12. The term "site" in the figure refers to the viewpoint from the dashed line in the figure, that is, the viewpoint on the straight line passing through the first hole H1 and the second hole H2. In this example, the hook 10 has a structure in which the third part 13 is curved relative to the first part 11 and the second part 12 when viewed from this straight line. Here, the viewpoint from the "site" on this straight line will be described, that is, the viewpoint when viewing the key box 1 from a lateral direction.

[0055] Figure 3B This is a side view of the key box 1 and the hook 10. In this example, Figure 3B This shows the state of the key box 1 when viewed from the side (from...) Figure 3A (From the viewpoint of the "site" in the text). In this example, the third part 13 of the hook 10 is connected to the first part 11. In this example, when the key case 1 is viewed laterally from the position where the hook 10 is fixed to the body 100 (example of the first position), the boundary portion having the first part 11 is bent relative to the first part 11. Note that in the first position, the body 100 constrains the hook 10 at its fixed position to the body 100, i.e., in the closed state of the cover C.

[0056] Here, the boundary portion is curved such that when the key box 1 is viewed laterally, the angle of the curved boundary portion, i.e., the smaller angle (less than 180 degrees) formed by the third portion 13 and the first portion 11, is an obtuse angle (greater than 90 degrees and less than 180 degrees). In this example, boundary B precisely corresponds to the curved corner portion and specifically represents the center of the corner. Furthermore, regarding the dotted lines in the figure, the vertical line represents the center line of the first portion 11, while the horizontal line represents a line perpendicular to that center line. Therefore, the intersection point at this time is represented as boundary B between the first portion 11 and the third portion 13. The second portion 12 is not explicitly shown in this figure because, when viewed from the direction shown in the figure, the second portion 12 is in a position overlapping with the first portion 11. In this example, the second portion 12 connects to the third portion 13 in the same state and at the same angle as the first portion 11 (not shown).

[0057] On the other hand, when the lock is released and the cover C is opened, the hook 10 moves to the position where the first part 11 emerges from the first hole H1, i.e., the position where the constraint on the body 100 is released (example of the second position). In this example, in the second position, since the second part 12 remains inserted in the second hole H2 and does not fall out, the hook 10 is in a state where it can rotate about the second part 12. Alternatively, both the first part 11 and the second part 12 can be completely separated from the body 100, and the hook 10 itself can move to a position in a free state relative to the body 100 (example of the second position). Figure 3B For ease of observation, only an enlarged view of a single hook 10 in the second position is shown. In this example, the first part 11 of the hook 10 has a locking part 111 at its lower end. In this example, the locking part 111 has a locking mechanism for locking the padlock, that is, for securing the hook 10 to the body 100, and the locking part 111 can be locked by engaging with a lock (or an integrated key box). The unlocking / locking mechanism in the locking part 111 will be described later. Next, the opening / closing function of the dial lock in the key box 1 will be described.

[0058] Figure 4A This is a front view showing the dial of key box 1. In this example, Figure 4A The diagram shows the key case 1 as viewed from the front. In this example, the cover C serves as the cover for the main body 100 and can be positioned as follows: Figure 4A The inner key is sealed in the locked state of the closed opening O (not shown). Therefore, the cover C has an opening / closing function for removing the key restrained in the body 100. For example, regarding the opening / closing function of the cover C, the opening / closing of the cover can be performed by a rotation method, a sliding method, or a pushing method. Here, the cover C includes an opening / closing lever L and dials D (D1, D2, D3, and D4) to perform the above-described opening / closing operation.

[0059] In this example, the open / close lever L represents a knob used to open and close the cover C when the key case is released from its locked state. Figure 4A In the case of the open / close lever L, there is a mechanism in which the cover C can be easily removed when, for example, the user moves the knob in the direction of the arrow while the dial lock is released.

[0060] In this example, dial D has the function of locking / unlocking the key box. For example, a mechanism is provided in which, when four dials are assigned the numbers 0 to 9 ( Figure 4A When D1, D2, D3 and D4 in the key box are rotated and arranged in a predetermined number (order), the locked state of the key box 1 is released.

[0061] As described above, the user can open the cover C and remove the key from inside by operating the dial D and moving the knob of the open / close lever L. Furthermore, by performing the above operation in reverse, the user can seal the key inside, i.e., lock the key case. Next, the attachment / removal of the hook 10 will be described.

[0062] Figure 4B This is a front view showing the interior of the main body 100, with the cover C removed. In this example, Figure 4B It shows Figure 4A The cover C is removed and the opening O on the front of the key box 1 is opened (exposed). Here, the attachment / removal mechanism of the hook 10 will be described.

[0063] In this example, the body 100 functions as a lock in addition to housing the key. Therefore, when locked, for example, the body 100 and the first part 11 of the hook 10 engage with each other, thereby preventing a malicious third party from removing the "hook" from the object. In this example, a latch LL, representing a locking mechanism for securing the hook 10 to the body 100, is attached to the interior of the body 100. The latch LL will be described here.

[0064] In this example, the latch LL has a locking mechanism for engaging / releasing with / from the hook 10 or the first part 11 (particularly the locking part 111), and the hook 10 can be attached / detached by, for example, by a user physically operating the latch LL. Furthermore, in the closed state of the cover C, i.e., in the locked state with the dial locked, the latch LL is similar to a key being housed in the internal space A of the body 100, preventing a person unaware of the combination from physically accessing the latch LL. That is, the key case 1 has a structure in which the hook 10 cannot be removed from the body 100 in the first position unless the dial lock provided on the cover C is released. As described above, by providing such a mechanism, the key case ensures security as a lock. Regarding the latch LL, the second part 12 may be provided with a similar portion (not shown), or the locking part 111 in the first part 11 may be the latch LL itself (not shown).

[0065] The overall configuration of key box 1 has been described above. Next, an example of locking key box 1 to an outdoor facility will be described.

[0066] Figure 5 This is a side view showing a comparison between key box 1 and the prior art. In this example, key box 1 represents the key box of the present invention, while key box 9 represents a key box in the prior art. In this example, similar to... Figure 2 , Figure 5The diagram shows the various key boxes locked to fence 3. In this example, the locking of key box 1 is related to... Figure 2 Similarly, the hook 10 is hooked onto the vertical grid 31 and supported by the horizontal grid 32a. However, in this hook 10, because the first part 11 and the third part 13 are bent to form an obtuse angle, when viewed from the side, the first part 11 is fixed in a horizontal (parallel) direction relative to the fence 3, as shown. Figure 5 As shown. Along with this, the main body 100 and the cover C, which are horizontally joined to the first part 11, are also fixed in the horizontal direction.

[0067] On the other hand, in key box 9, viewed from the side, hook 90 is fixed in an inclined direction relative to fence 3. At this time, the main body 900 of key box 9, attached to hook 90, is also fixed in an inclined direction, similar to hook 90. ​​In this example, assuming the raindrops fall in the same direction, comparing the two key boxes, it can be seen that the area of ​​the cover C of key box 1 exposed to raindrops is smaller than that of the cover of key box 9.

[0068] As described above, compared to key cases according to the prior art, the key case 1 with the improved hook 10 can prevent rainwater from entering the gaps in the opening / closing section, the dial section, or the cover. Therefore, corrosion of the keys enclosed inside the key case, as well as corrosion and damage to the key case body, can be prevented, and the key case can be safely stored without being easily damaged even when it is managed outdoors.

[0069] 1-2. Variation Examples

[0070] This invention is not limited to the embodiments described above and is capable of various modifications. Some variations will be described below. Two or more substances described below can be used in combination.

[0071] (1) Key box 1

[0072] The component configuration, material configuration, and functional configuration of the key case 1 are not limited to those illustrated in the embodiments. The key case 1 can have any component configuration, material configuration, and functional configuration, as long as it can achieve the required function. For example, the components constituting the first part 11, the second part 12, and the third part 13 of the hook 10 can be made of different materials or the same material. In addition, the second part 12 can have a locking part 111 similar to the first part 11. Furthermore, the cover C can have a material and function with excellent waterproof and hydrophilic properties. In addition, the main body 100 of the key case 1 may not have the cover C, the opening O, and / or the internal space A in a first position.

[0073] (2) Hook and loop 10

[0074] The hook 10 is not limited to the hook 10 illustrated in the embodiments. The hook 10 can have any component configuration, material configuration, and functional configuration, as long as it can achieve the desired function. Here, an example in which the hook 10 is bent by, for example, an engagement mechanism will be described.

[0075] Figure 6A This is a top view showing the hook 10 with the connector portion J. In this example, Figure 6A The diagram illustrates the state of the key box 1 as viewed from above. In this example, the third portion 13 of the hook 10 is connected to the first portion 11 and the second portion 12 via a connector portion J. In this example, the connector portion J has a joint function, for example, used in robotic arm technology. In this example, a connector refers to a mechanism for connecting links (e.g., the first portion 11 and the third portion 13) to each other and for rotating (or vice versa) the third portion 13 relative to the first portion 11 about the axis of rotation of the connector portion J. In this example, in Figure 6A In the process, the two joint portions J in the first part 11 and the second part 12 rotate simultaneously, thereby adjusting the angle of the joint portion J.

[0076] Figure 6B This is a side view showing the hook 10 with the connector portion J. In this example, Figure 6B The diagram shows the key box 1 as viewed from the side. In this example, the dashed lines in the diagram represent the vertical line of the center line of the first part 11 and the horizontal line perpendicular to that center line, respectively. Furthermore, the intersection of the vertical and horizontal lines represents the rotation center (i.e., the axis of rotation) of the connector part J.

[0077] When the key box is viewed laterally, the connector portion J is bent relative to the first portion 11. Here, the connector portion J can rotate within a range where the angle of the connector portion J (i.e., the angle formed by the third portion 13 and the first portion 11 when the key box is viewed laterally) is an obtuse angle (greater than 90 degrees and less than 180 degrees). Figure 6B The diagram illustrates the state in which the angle of connector J changes from a wider obtuse angle to a narrower obtuse angle. This angle change is performed, for example, by a user's hand. Furthermore, even when a certain amount of force is applied in the rotational direction, connector J is fixed to maintain this angle. That is, in a more preferred example, it is desirable to adjust the upper limit of the connector load so that a human hand can change the angle of connector J, but this angle does not change during locking (in its natural state).

[0078] In addition, Figure 6B In the figure, when viewed from the direction shown, the second part 12 is positioned overlapping the first part 11, and therefore is not explicitly shown. In this example, the second part 12 is connected to the connector part J in the same manner as the first part 11 (not shown).

[0079] As described above, the hook 10 with its improved connector portion J allows the user to freely adjust the angle even when locked to an outdoor object. Therefore, compared to key cases according to the prior art, the key case 1 is able to prevent rainwater from entering the gaps in the opening / closing portion, the dial portion, or the cover.

[0080] In this example, the rotation range of the hook 10 with the connector portion J is not limited to the aforementioned obtuse angle range (more than 90 degrees and less than 180 degrees). In this example, when the key box is viewed from the lateral direction, the connector portion J enables the angle formed by the first portion 11 (second portion 12) and the third portion 13 to be precisely 180 degrees; that is, when viewed from the side, the connector portion J makes the first portion 11 (second portion 12) and the third portion 13 appear as a straight line. Therefore, when storing the key box 1, the user can save space in the storage location. Alternatively, when selling the key box 1, packaging materials (packages) can be reduced, which is very convenient. Furthermore, when the key box is viewed from the lateral direction, the connector portion J enables the angle formed by the first portion 11 (second portion 12) and the third portion 13 to be 0 degrees; that is, when viewed from the side, the connector portion J makes the first portion 11 and the third portion 13 appear in a folded state. In this state, the aforementioned storage or sale can be performed.

[0081] Furthermore, as another variation of, for example, the first part 11 (or the second part 12) of the hook 10, the locking part 111 may have a locking gear. In this example, the locking gear includes a locking mechanism in the locking part 111 and represents an adjustment mechanism for adjusting the length of the hook 10 when locked to an object. Here, the locking gear will be described.

[0082] Figure 7 This is a side view showing the hook 10 of a modified key case 1. In this example, Figure 7 The image shows the state of the hook 10 of the key case 1 when viewed from the side. In this example, the locking gear LG is mounted on, for example, the locking portion 111 of the first portion 11. Figure 7 With the hook 10 in the second position, the locking gear LG refers to the gear-shaped member provided on the locking part 111. The locking gear LG can be integrally formed with the locking part 111.

[0083] In this example, for instance, with the hook 10 in the first position, i.e., with the hook constrained by the body, the locking gear LG can adjust the length of the hook 10. In this example, the length of the hook 10 refers, for example, to its length in a direction (or simply "longitudinal") parallel to the centerline of the first portion 11 (or the second portion 12). Figure 7With the hook 10 in the first position, the locking gear LG can adjust the length of the hook 10 in two stages, such as a first length or a second length. Therefore, for example, even if the object used to lock the key case is a door handle, the length of the hook 10 can be adjusted to correspond to the outer diameter of the object. Thus, for example, it can prevent the hook 10 from being easily removed from the object, and can further enhance the security of the lock. In addition, the hook 10 can be attached to various objects, improving the operability of the key case. The adjustment of the length of the hook 10 by the locking gear LG is not limited to the two stages mentioned above, and can be adjusted to any length. Furthermore, for example, the length of the hook 10 can be changed by the locking gear before locking, and during locking, the length of the hook 10 is fixed and maintained at the length adjusted before locking.

[0084] Furthermore, as another variation, the shape of the hook 10 can be handled in any way when the key case is viewed from the front. In this embodiment, the hook 10 is described as having a structure that bends when the key case is viewed from the lateral direction (when viewed from a straight line passing through the first hole H1 and the second hole H2 with the hook 10 fixed in the first position). On the other hand, when viewed from a direction perpendicular to the virtual plane formed by the first part 11 and the second part 12, that is, when the key case is viewed from the front, the shape of the hook 10 can be freely processed (or can be bent) into various height-designed shapes, such as heart-shaped, star-shaped, or cat-shaped.

[0085] Figure 8 This is a front view showing the hook 10 of a modified key case 1. In this example, Figure 8 The image shows the hook 10 of the key case 1 when viewed from the front. In the components constituting the hook 10 in this example, for example, the third portion 13 is machined into a heart shape. Here, for ease of observation, only the boundary portion between the third portion 13 and the first portion 11 (second portion 12) is simply drawn. Therefore, for example, by combining with the hook 10 in this embodiment, the third portion 13 can have a structure that bends when viewed from a straight line passing through the first hole H1 and the second hole H2 while the hook 10 is fixed in the first position. As described above, in this variation, the hook 10 can have a more attractive appearance to the user, and the user's willingness to purchase can be enhanced during sales.

[0086] (3) Main body 100

[0087] The main body 100 is not limited to those shown in the embodiments. In this example, the main body 100 may be integrally formed with at least a portion of the first part 11 or the second part 12. Furthermore, the shape of the opening O or the capacity of the internal space A in the main body 100 is not limited, and it may have a shape or capacity capable of closing the key 2 according to the form of the key 2. Additionally, the cover C may have any shape or opening / closing structure, and for example, the opening / closing direction of the cover C is not limited to up, down, left, right, and diagonal, and can be any direction. In this example, the opening / closing mechanism of the cover C may be a structure completely separate from the main body, except for rotary, sliding, or push types.

[0088] (4) Dial D / Open / Close lever L

[0089] The dial D and the on / off lever L are not limited to those shown in the embodiments. In this example, the dial D or the on / off lever L can be installed in a location other than the cover C. First, the locking method can be a button type instead of a dial type.

[0090] Furthermore, when using key box 1 outdoors, from the perspective of work safety and convenience, the user, as the manager, can operate the key box while wearing gloves (work gloves). In this example, if the user is wearing gloves, there is a problem that the user cannot smoothly lock / unlock the key box. To solve this problem, in addition to the above-described implementation, an improved configuration of dial D can be introduced.

[0091] In this example, dial D can be modified to, for example, a dial with a larger size than a normal dial, or the spacing between each dial can be widened. In this example, since it is conceivable that a user would perform dial operations while wearing gloves or work gloves, the dial size can be adjusted according to the size of the fingers while wearing gloves, etc. In this example, in Figure 4A In this example, the longitudinal length of the dial D (a set of multiple dials D1 to D4) is preferably, for example, 3 cm or more and 5 cm or less. Additionally, the lateral length of the dial D is preferably, for example, 2 cm or more and 4 cm or less. In this example, "longitudinal (direction)" includes, for example, a direction perpendicular to the rotation direction of the multiple dials (D1 to D4) (e.g., Figure 4A (As shown). Furthermore, a mechanism can be provided that transmits a physical response (pushing sensation, reaction force) to the user's fingers through a glove when the dial D is operated, or a mechanism can be implemented to generate a mechanical operating sound. As described above, in the above example, a key box 1 with high convenience can be provided to the user even when managing the key box outdoors.

[0092] Furthermore, the dial lock itself may have, for example, a latch for securing the hook 10 (with... Figure 4B (Different from the latch LL in the original text), and may have a mechanism (not shown) in which the hook 10 is automatically locked when the dial D is locked. This eliminates the need for the user to manually operate the latch during locking / unlocking, thus improving convenience.

[0093] (5) Key 2

[0094] Key 2 is not limited to those keys exemplified in the embodiments. In this example, key 2 can be of any type and can be used for various purposes and in various forms, as long as it can be stored in the internal space A of the main body 100, such as a property key, equipment key, spare key, or card key. Furthermore, the object to be stored in the internal space A does not have to be the key in the primary location, and can be any of various items such as valuables, tools, and documents.

[0095] 2. Second Implementation Method

[0096] In key cases, external factors that could adversely affect valuable items inside, such as rainwater intrusion, can be considered. In this embodiment, an improved technique is provided to prevent water from entering the interior of the key case.

[0097] 2-1. Configuration

[0098] Figure 9 This is a perspective view showing the appearance of the key box 21 when locked according to an embodiment. In this example, the key box 21 (or simply key box) refers to a padlock-type key box that can be locked to an object such as a door, fence, or railing while a valuable item such as a key is contained inside.

[0099] Padlock key boxes are typically used outdoors and are useful, for example, for on-site management of keys to be observed by the manager of the rental property, for temporary storage of car or motorcycle keys during outdoor recreation, and for the outdoor management of small valuables.

[0100] When using a padlock-type key case outdoors, it is exposed to rain and wind, thus requiring effective protection for the valuables inside from various environmental factors. Therefore, this invention provides an improved technique to prevent water from entering the key case.

[0101] The key case 21 has a body 210 and a hook 220. In this example, the body 210 represents the housing of the key case 21 itself. The hook 220 is a metal fitting used to hook the key case onto an object (locked position) when locked.

[0102] The body 210 has a first upper hole H1 and a second upper hole H2. The first upper hole H1 and the second upper hole H2 are holes for securing the hook 220 to the body 210. When the first upper hole H1 and the second upper hole H2 are not distinguished and are mentioned together, they are simply referred to as "upper holes". Details of the upper holes will be described later.

[0103] Furthermore, the main body 210 has a cover C for closing an opening (not shown) for inserting and removing a key from the interior of the main body. This opening will be described later. The cover C is a component for switching the opening between a closed and an open state. For example, after storing a key in the main body 210, the user can restrain the hook 220 with the cover C closed. The position of the hook 220 at this time is referred to as the first position.

[0104] On the other hand, for example, when the key is removed, the user opens cover C. In this example, the user can lock (or unlock) cover C by operating the dial D attached to the front of cover C.

[0105] Dial D is a component used to lock the cover C with its opening closed when the hook 220 is fixed in the first position. Dial D includes a rotating mechanism. When the cover C is locked, the user can open the cover C by aligning dial D with a preset number and lowering the open / close switch S.

[0106] The hook 220 is a U-shaped metal fitting composed of multiple components, namely a first insertion portion 221 and a second insertion portion 222. The shape of the hook 220 can be virtually any shape, but it is desirable that the hook 220 be machined such that when the key case body is suspended from an object, the body 210 is perpendicular to the ground. Figure 9 In the middle, the U-shaped part of the hook 220 is shown as a curved shape.

[0107] The first insertion portion 221 is the portion that is inserted into the first upper hole (corresponding to the first portion 11 in the first embodiment). In this example, the first insertion portion 221 includes a locking portion (not shown) for locking the padlock and performs locking by engaging with the body 210 of the key box.

[0108] The second insertion portion 222 is the portion that is inserted into the second upper hole (corresponding to the second portion 12 in the first embodiment). In this example, the second insertion portion 222 is positioned substantially parallel to the first insertion portion 221 and has the same function as the first insertion portion 221. Note that... Figure 9 The key case is shown in a state where the hook 220 is locked and either the first insertion portion 221 or the second insertion portion 222 is engaged with the body 210 of the key case.

[0109] In this example, when the padlock is unlocked, the first insertion portion 221 is disengaged from the body 210, and the second insertion portion 222 rotates within the second upper hole H2, thereby enabling it to be detached from (or attached to) an object. The position of the hook 220 at this time is referred to as the second position. When the hook 220 is in the second position, the user can open the cover C at will. Note that regarding the hook 220, when the first insertion portion 221 and the second insertion portion 222 are not distinguished, they are simply referred to as the "insertion portion".

[0110] Figure 10 This is a schematic diagram illustrating a key box 9 in the prior art. In this example, key box 9 represents a key box in the prior art. The body 91 of key box 9 is provided with holes H91 and H92 for inserting hooks. The figure shows the state in which the first insertion portion 921 and the second insertion portion 922 of the hook are inserted into holes H91 and H92, respectively. Note that, due to Figure 10 It is a simplified diagram, so the cover attached to the main body 91 is not shown.

[0111] The internal space 990 is a space for storing keys, etc., within the main body 91. In this example, the first insertion portion 921 of the hook is inserted into the internal space 990 through the hole H91. The guide G is a component used to guide the first insertion portion 921.

[0112] Here, when the key box 9 is stored outdoors, if raindrops R fall in the direction shown, it is conceivable that the raindrops R will enter the internal space 990 through the gap between holes H91 and H92. In this case, the raindrops R will accumulate at the bottom of the internal space 990, and there is a risk of damaging the keys or valuables. Therefore, in this invention, a key box structure is provided to solve these problems.

[0113] Figure 11 This is a perspective view showing the appearance of the key case 21 according to an embodiment when opened. In this example, the key case 21 has an internal space 250 within a body 210, which is a space for accommodating the key 2. The internal space 250 is a space connected to and formed by an opening O, which is the entrance to the interior. The opening O refers to the outer edge of the internal space 250 relative to the entrance of the body 210, that is, the portion corresponding to the "edge".

[0114] In this example, the user can insert and remove the key 2 into the internal space 250 through the opening O. Locking or unlocking the padlock (i.e., engagement or disengagement of the body 210 and the hook 220) is performed using a locking mechanism (not shown) (e.g., a latch) located in the internal space 250.

[0115] Here, the locking mechanism includes, for example, a mechanism for securing the hook 220 at its engagement position with the body 210 (an example of the first position). More specifically, it is a mechanism in which engagement or disengagement between the hook 220 and the body 210 is performed by a latch (not shown) operable only from the internal space 250. Details will be described later.

[0116] In this example, the main body 210 is provided with a cover C for closing the opening O, and when locked, the user can close the cover C after the key 2 is placed in the main body 210 (or open the cover C when the key 2 is removed). The cover C is a component for opening and closing the key box and can switch the opening O to a closed state and an open state.

[0117] As above Figure 9 As shown, the user locks cover C by operating a dial attached to cover C. That is, cover C will not open unless the dial is aligned with a preset number, and the padlock cannot be unlocked if cover C is not opened. This structure ensures the security of the key box 21. Next, the structure for preventing water from entering the interior of the key box will be described.

[0118] Figure 12 This is a cross-sectional view showing the separating wall W of the key box 21. In this example, Figure 12 This is a plan view showing the key box 21 when cut in a direction perpendicular to the ground (not shown) as viewed from the front. Descriptions of the first upper hole H1, the second upper hole H2, the first insertion portion 221, the second insertion portion 222, and the internal space 250 are omitted.

[0119] Receiving spaces 201 and 202 are spaces for respectively accommodating corresponding insertion portions (i.e., the first insertion portion 221 and the second insertion portion 222) in the main body. Receiving space 201 is an example of the first receiving space, and receiving space 202 is an example of the second receiving space. At this time, each insertion portion is inserted into each upper hole.

[0120] Separating walls W1 and W2 are walls having outer wall surfaces corresponding to the outer walls of the interior space 250. Separating wall W1 is an example of a first separating wall, and separating wall W2 is an example of a second separating wall. In this example, surface F1 and surface F2 are the outer wall surfaces of separating walls W1 and W2, respectively. That is, a structure is obtained that separates each receiving space from the interior space through the separating walls and the outer wall surfaces.

[0121] Furthermore, the locking space 300 is a space equipped with a locking mechanism that can secure the hook 220 to the body 210, i.e., lock the padlock, and Figure 12In this figure, the locking space 300 is arranged adjacent to (or shares a portion of) the receiving space 201 that receives the first insertion portion 221. Furthermore, in this figure, surfaces F1 and F2 are shown as examples corresponding to the structure of the outer wall of the locking space 300. In this example, the locking space 300 is located near the upper opening, which is a concern due to the structure of the key box. Therefore, it is desirable for each separating wall to separate at least a portion (or all) of each receiving space from the locking space 300.

[0122] The locking mechanism is designed to engage with the first insertion portion 221 and secure the hook 220 to the body 210. Conversely, when the hook 220 is removed from the body 210, the latch LL can be activated when the cover C (not shown) is open. In addition to the operation method described in the example above, the locking mechanism can also be configured with any other mechanism.

[0123] Bottom holes E1 and E2 are holes located at the bottom of each receiving space and are arranged on opposite sides of each upper hole (i.e., Figure 12 (Lower side of the body 210). Bottom hole E1 is an example of a first bottom hole, and bottom hole E2 is an example of a second bottom hole. Each receiving space communicates with the outside of the body 210 via a corresponding bottom hole.

[0124] Here, when the key box 21 is used outdoors or in a locked state, rainwater can be expected to enter through the first upper hole H1 and the second upper hole H2. At this time, the separation walls W1 and W2 physically separate the internal space 250 from the spaces communicating with the first upper hole H1 and the second upper hole H2 (e.g., the receiving spaces 201 and 202), thereby preventing water from entering the internal space 250. Furthermore, since surfaces F1 and F2 act not only as outer walls of the internal space 250 but also as outer walls of the locking space 300, they effectively suppress the intrusion, diffusion, and flow of rainwater. This water-proof structure is maintained even when the cover C is open. Therefore, based on the structure of the separation walls described above, the receiving space can always be separated from the internal space (or the receiving space can be separated from the locking space), and valuables and the locking mechanism housed within the main body can be protected from water intrusion.

[0125] Note that if the amount of rainwater that has entered the containment space is small, or if the water droplets themselves are dry or have evaporated, there is no problem even if the water does not drain from the containment space. On the other hand, the bottom holes E1 and E2 function as drain outlets to automatically drain rainwater that has entered the containment space. Therefore, there is no need for cumbersome drainage from the first upper hole H1 and the second upper hole H2, and it is desirable to prevent corrosion of the hook 220 and water intrusion into the locking space 300.

[0126] Figure 13 This is a cross-sectional view showing the separation wall W of the key box 21 in another example. In this example, Figure 13 Indicates something similar to Figure 12 A cross-sectional view is shown. Here, a structural example will be described where the dial is directly attached to the body 210 instead of the cover.

[0127] In this configuration, dial D is integrated with the locking mechanism, and locking (or unlocking) the padlock and closing (or opening) the cover can be performed by a single mechanism. For example, a user can simultaneously unlock the padlock and open the cover by aligning dial D with a preset number.

[0128] The cover lock CL is a component used to secure the cover (not shown) to the key case body and is mounted on, for example, a locking mechanism. In this case, any mechanism can be used; however, for example, the user can unlock the cover lock CL by aligning the dial D with a preset number, and can open the cover by pressing an open / close switch (not shown), etc.

[0129] Here, besides the path of raindrops entering through the first upper hole H1 and the second upper hole H2, it is also conceivable that rainwater could enter the locking space 301 along the gap of the dial D. Therefore, for example, the receiving space 201 and the locking space 301 can share at least a portion of the space. In this case, a separating wall W1 is provided as shown in the figure, and the receiving space 201 and the locking space 301 are spatially connected. Based on this structure, even if water is allowed to intrude into the locking space 301, the water can be discharged intact into the receiving space connected to the locking space. Thus, damage caused by water intrusion can be suppressed.

[0130] In a simpler model, the interior space 250 only needs to be isolated from other spaces by a partition wall, and the structure and shape of the partition wall can be changed in any way. As mentioned above, even in this case, the key box 21 is able to more effectively prevent water from entering the interior space 250. Furthermore, rainwater can be effectively drained even when the locking space 301 is flooded along the dial D.

[0131] 2-2. Variation

[0132] This invention is not limited to the embodiments described above, and various modifications are possible. Some modifications will be described below. Two or more substances described below can be used in combination.

[0133] (1) Key box 21

[0134] The components, materials, structure, and shape of the key case 21 are not limited to those illustrated in the embodiments. The key case 21 can have any configuration, as long as it achieves the required function. For example, the body 210 and the cover C can have materials and functions with excellent water resistance. In this example, a waterproof gasket can be provided at the opening O (or cover C) of the internal space 250, in which valuables are stored. Thus, since the opening O and the cover C are in close contact with each other, the water resistance inside the key case can be ensured. Note that any material can be used for the waterproof gasket.

[0135] (2) Main body 210

[0136] The main body 210 is not limited to those bodies illustrated in the embodiments. In this example, the main body 210 can take any structure, as long as it is a structure for separating the receiving space of the hook 220 connected to the upper hole from the internal space of the main body when rainwater enters from the upper hole. Furthermore, the components, materials, structure, and shape of the separation wall can be of any kind. For example, as materials for the separation wall, metal-based materials such as aluminum, materials subjected to a waterproof coating (waterproofing treatment), plastic-based materials such as polycarbonate, rubber-based materials such as silicone rubber, or fibrous materials such as polyurethane-coated fabrics can be used. Alternatively, the waterproofing treatment can be applied to the outer wall surface.

[0137] In addition to waterproofing, the main body 210 can also be made of a material with excellent electromagnetic shielding properties for the internal space. For example, the materials used for the main body 210 and the cover C can be metal, composite materials using plastics, glass fiber, carbon fiber, or ceramic. In this example, the main body 210 and the cover C can have a shielded exterior, such as metal foil shielding, metal mesh shielding, electroplating, paint shielding, or conductive polymer treatment including carbon nanotubes. Therefore, since keys and other objects enclosed in the internal space are electromagnetically shielded, physical access by malicious third parties can be prevented.

[0138] Note that the lid C can have any shape or opening / closing structure. For example, the opening / closing direction of the lid C is not limited to up, down, left, right, and diagonal directions, and can be any direction. In this example, the opening / closing mechanism of the lid C can be a structure that is completely separate from the main body, except for rotary, sliding, or push types.

[0139] (3) Hook and loop 220

[0140] The hook 220 is not limited to the hook exemplified in this embodiment. The hook 220 can have any component, material, structure, and shape, as long as it achieves the desired function. The hook 220 can be moved to a first position for securing the cover in a closed state and a second position for opening the cover, but the movement of the hook 220 can be performed in any manner. The hook 220 can be detached from the body 210. Furthermore, engagement or disengagement between the hook 220 and the locking mechanism can be achieved through any structure.

[0141] As another variation, the shape of the hook 220 can be processed in any way. In this embodiment, the key box 21 is described as having a structure in which, when the hook 220 is fixed in the first position, it is bent when viewed from the lateral direction, i.e., from a straight line passing through the first and second upper holes. However, the shape of the hook 220 can be any shape, such as a non-bent shape.

[0142] (4) Internal space, accommodating space and locking space

[0143] The internal space, receiving space, and locking space are not limited to the spaces illustrated in the embodiments. In this example, the internal space may be configured to be isolated from other spaces by a separating wall, may accommodate various components (e.g., sensors), or may have a structure that isolates or protects it from the external environment. Although the receiving space has been described as a space for accommodating each insertion portion, it may have any other function, and for example, at least a portion of the function of the locking mechanism may be housed in the receiving space. Depending on the structure of the locking mechanism, the locking space may be installed at any location on the body 210.

[0144] (5) Bottom hole E

[0145] The bottom hole E is not limited to the bottom hole illustrated in the embodiment. In this example, multiple bottom holes E may be provided, or the bottom holes E may have a grid shape, etc. Furthermore, the bottom hole E may be provided with a cover portion for free drainage, etc. For example, by opening and closing this cover portion only during drainage, dust and the like can be prevented from entering from the outside during normal time.

[0146] (6) Dial D

[0147] The dial D is not limited to the dial illustrated in this embodiment. In this example, the dial D may be installed in a location different from that of the cover C. Furthermore, the locking method of the key box may not be dial-based, but may be button-based, etc.

[0148] Furthermore, dial D has a rotation axis and includes a mechanism capable of rotating about the axis. The user performs the operation of aligning numbers (e.g., numbers from 0 to 9) to a specific position by rotating dial D in one direction and the opposite direction of rotation about the axis. However, if water or other substances adhere to the dial, the hand may slip, and the rotation control of dial D may not be performed well. Therefore, a limitation can be provided on the rotation angle of dial D. That is, instead of a structure where dial D normally continues to rotate about the axis, a structure can be adopted in which dial D cannot rotate further after rotating a predetermined angle in one direction (or the opposite direction). In this case, the rotation angle of dial D is preferably less than 360 degrees at most, or preferably less than 315 degrees, less than 270 degrees, less than 225 degrees, or less than 180 degrees. For this purpose, for example, a rotation control mechanism using a stop or the like can be employed. As described above, it is possible to prevent dial D from rotating too much and causing operational errors by the user.

[0149] 3. Variation Example

[0150] This invention is not limited to the embodiments described above, and various modifications are possible. For example, parts described in the first embodiment and parts described in the second embodiment can be used in combination. For example, in having Figure 6A The rotating hook 10 shown or Figure 8 The key case of the heart-shaped hook 10 shown can be used to shield the main body. Furthermore, any combination is possible.

[0151] List of reference numerals

[0152] 1…Key box, 10…Hook and loop, 11…First part, 111…Locking part, 12…Second part, 13…Third part, 100…Body, C…Cover, O…Opening, A…Internal space, H1…First hole, H2…Second hole, B…Boundary, L…Open / close lever, D (D1, D2, D3 and D4) dial, J…Connector, LL…Latch, 2…Key, 3…Fence, 31…Vertical grid, 32 (32a, 32b and 32c)…Horizontal grid, 9…Key Key box, 90…hook and loop, 900…body, C9…cover part, LG…locking gear, 21…key box, 210…body, 220…hook and loop, 221, 222…insertion part, 250…internal space, 201, 202…accommodating space, 300, 301…locking space, H…top hole, E…bottom hole, W…separation wall, F…surface (outer wall surface), O…opening, C…cover, S…on / off switch, D…dial, L…latch, CL…cover lock, 2…key

Claims

1. A key box, the key box comprising: The main body has an opening, an internal space connected to the opening, and a first hole and a second hole, wherein a key that is inserted and removed through the opening is stored in the internal space. A cover, which transitions from one of the closed state and the open state of the opening to the other; A hook having a first portion inserted into a first hole, a second portion inserted into a second hole, and a third portion connected to the first and second portions, the hook being moved to a first position for constraining the cover in a closed state and a second position for opening the cover, wherein, when viewed along a straight line passing through the first and second holes while the hook is fixed in the first position, the third portion is bent relative to the first and second portions; as well as A locking mechanism is provided to secure the hook and loop at the first position.

2. The key box according to claim 1, wherein, When viewed along a straight line passing through the first and second holes while the hook is fixed in the first position, the angle formed by the third part with the first and second parts is an obtuse angle.

3. The key box according to claim 1, wherein, The hook and loop have joint portions between the first portion and the third portion, and between the second portion and the third portion, respectively. The joint portion rotates and bends relative to the first and second portions.

4. The key box according to claim 1, wherein the key box includes a dial for locking or unlocking the locking mechanism. in, When a user operates the dial, the dial applies a reaction force corresponding to the user's operation.

5. The key box according to claim 4, wherein, When the dial is turned, it produces a mechanical operating sound.

6. The key box according to claim 1, further comprising: Multiple dials, used to lock or unlock the locking mechanism. The width of the plurality of dials in the direction perpendicular to the rotation direction is more than 3 cm and less than 5 cm.

7. The key box according to claim 1, in, The subject includes: A first accommodating space for accommodating the first portion; and a second accommodating space for accommodating the second portion; and A first separation wall, used to separate the first accommodating space from the internal space; and a second separation wall, used to separate the second accommodating space from the internal space.

8. The key box according to claim 7, further comprising: A first bottom hole is located on the opposite side of the first hole and at the bottom of the first receiving space; as well as The second bottom hole is located on the opposite side of the second hole and at the bottom of the second receiving space.

9. The key box according to claim 7, further comprising: A locking space, wherein the locking space is provided with a locking mechanism for fixing the hook and loop at the first position. The first separating wall separates the first accommodating space from the locking space, and the second separating wall separates the second accommodating space from the locking space.

10. The key box according to claim 7, further comprising: A dial for locking the cover closed when the hook is fixed in the first position.

11. The key box according to claim 10, wherein, The dial has a rotating mechanism that rotates in one direction and in the opposite direction, and the rotation angle is less than 360 degrees.

12. The key box according to claim 7, wherein, The main body is shielded so that the internal space is electromagnetically shielded when the opening is closed by the cover.

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