Door peephole cover

Abstract

To provide a door scope cover that can accommodate various protrusion dimensions.SOLUTION: A cylindrical body 20 to surround the peephole outer edge of a door scope can extend and contract in the central axis direction of the cylindrical body 20. Thereby, a door scope cover 10 can be used with a door scope 1 that can accommodate various protrusion dimensions.SELECTED DRAWING: Figure 4

Description

Technical Field

[0007]

[0001] The present disclosure relates to a door scope cover for hiding the peephole of a door scope.

Background Art

[0002] For example, the door scope cover described in Patent Document 1 is configured to include a mounting ring, a cover piece, and the like. The mounting ring is an annular member that surrounds the indoor viewing portion of the door scope. The cover piece is a member that is swingably attached to the mounting ring.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, as shown in FIG. 2(B) of Patent Document 1, the longitudinal end portions of the door scope protrude from the door surface. And the dimensions of the portions protruding from the door surface (hereinafter referred to as protruding dimensions) are not the same in all door scopes.

[0005] Therefore, the door scope cover described in Patent Document 1, that is, the mounting ring having a thickness dimension adapted to a specific protruding dimension, cannot be used for a door scope having a protruding dimension larger than the protruding dimension.

[0006] In view of the above points, the present disclosure discloses an example of a door scope cover that can cope with various protruding dimensions.

Means for Solving the Problems

[0007] A door peephole cover for concealing the peephole (3) of the door peephole (1) should preferably have at least one of the following constituent elements: In other words, the constituent element is a cylindrical body (20) for surrounding the outer edge of the peephole (3), which is expandable and contractible in the direction of the central axis, and a cover (30) which is displaceable between a position that closes the open end (23C) of the cylindrical body (20) and a position that opens the open end (23C).

[0008] This means that the door peephole cover can accommodate door peepholes with various protrusion dimensions. Incidentally, the symbols in each of the parentheses above are just examples showing the correspondence with the specific configurations etc. described in the embodiments described later, and this disclosure is not limited to the specific configurations etc. indicated by the symbols in the parentheses above. [Brief explanation of the drawing]

[0009] [Figure 1] This is a front view of the door peephole cover according to the first embodiment. [Figure 2] This is a perspective view showing the door scope cover in the closed state when it is retracted according to the first embodiment. [Figure 3] This is a perspective view showing the door scope cover in the open state when the door scope cover is retracted according to the first embodiment. [Figure 4] This is a perspective view showing the door scope cover in the closed state when it is extended according to the first embodiment. [Figure 5] This is a perspective view showing the door scope cover in the open state when it is extended according to the first embodiment. [Figure 6] This figure shows the structure of a door peephole cover according to the first embodiment. [Figure 7] This figure shows the structure of a door scope cover according to the first embodiment. [Figure 8] This figure shows the structure of a door scope cover according to the first embodiment. [Figure 9]It is a diagram showing the structure of the door scope cover according to the first embodiment. [Figure 10] It is a diagram showing the structure of the door scope cover according to the first embodiment. [Figure 11] It is a rear - side perspective view of the door scope cover according to the first embodiment. [Figure 12] It is a perspective view of the telescopic restriction part according to the first embodiment. [Figure 13] It is a diagram showing the structure of the telescopic restriction part according to the first embodiment. [Figure 14] It is a rear - side perspective view of the door scope cover according to the first embodiment, showing a state where the second double - sided tape is attached. [Figure 15] It is a perspective view of the telescopic restriction part according to the second embodiment. [Figure 16] It is a diagram showing the structure of the telescopic restriction part according to the second embodiment. [Figure 17] It is a diagram showing the structure of the telescopic restriction part according to the second embodiment. [Figure 18] It is a perspective view showing a state where the cylindrical body according to the third embodiment is shrunk. [Figure 19] It is a perspective view showing a state where the cylindrical body according to the third embodiment is extended.

Modes for Carrying Out the Invention

[0010] The following "Embodiments of the Invention" show an example of embodiments belonging to the technical scope of the present disclosure. That is, the invention - specifying matters described in the claims are not limited to the specific configurations and structures shown in the following embodiments.

[0011] Note that the arrows and slashes indicating directions attached to each figure are described to facilitate understanding of the relationship between each figure and the shape of each member or part. Therefore, the invention shown in the present disclosure is not limited to the directions attached to each figure. The figure with slashes does not necessarily show a cross - sectional view.

[0012] At least one member or part described with a reference sign is provided, unless otherwise stated, e.g., with a statement of "one". That is, when there is no statement such as "one", two or more of such members may be provided. The door scope cover shown in the present disclosure includes at least one of the components such as the members or parts described with a reference sign and the structural parts shown in the drawings.

[0013] (First Embodiment) <1. Outline of Door Scope Cover> In the present embodiment, an example of the door scope cover according to the present disclosure is applied to a door scope used for an entrance door of an apartment house or a detached house. The door scope 1 is a wide-angle lens attached to the door 2 as shown in FIG. 6.

[0014] The door scope cover 10 is a covering member for hiding the viewing hole 3 of the door scope 1. Specifically, as shown in FIGS. 1 to 5, the door scope cover 10 is fixed to the door 2 to cover and hide the viewing hole 3.

[0015] The door scope cover 10 includes at least a cylindrical body 20 and a cover 30. The cylindrical body 20 is a cylindrical member for surrounding the outer edge of the viewing hole 3 and is telescopable in the central axis direction (see FIGS. 6 and 8). FIGS. 2 and 3 show the state where the cylindrical body 20 is most contracted. FIGS. 4 and 5 show the state where the cylindrical body 20 is most extended.

[0016] The cover 30 is displaceable between a position (see FIGS. 2 and 4) for closing the opening end 23C (see FIGS. 3 and 5) of the cylindrical body 20 and a position (see FIGS. 3 and 5) for opening the opening end 23C.

[0017] Specifically, the cover 30 is rotatably connected to the opening end 23C side of the cylindrical body 20 via a shaft portion 31 (see FIG. 6). Then, the cover 30 is displaced between the closing position (see FIGS. 2 and 4) and the opening position (see FIGS. 3 and 5) by swinging and displacing about the shaft portion 31.

[0018] <2. Detailed structure of the cylindrical body, etc. (See Figures 6-9)> <2.1 Structure of the cylindrical body> As shown in Figures 8 and 9, the cylindrical body 20 is composed of a first cylindrical portion 21, a second cylindrical portion 22, a third cylindrical portion 23, and so on. The first cylindrical portion 21, the second cylindrical portion 22, and the third cylindrical portion 23 are substantially cylindrical members that surround the outer edge of the peephole 3, as shown in Figures 6 to 9.

[0019] The second cylindrical portion 22 is a member that can be displaced relative to the first cylindrical portion 21 while its central axis coincides with the central axis of the first cylindrical portion 21. The third cylindrical portion 23 is a member that can be displaced relative to the second cylindrical portion 22 while its central axis coincides with the central axis of the second cylindrical portion 22.

[0020] Therefore, the third cylindrical portion 23 can also be displaced relative to the first cylindrical portion 21 while its central axis coincides with the central axis of the first cylindrical portion 21. The second cylindrical portion 22 is inserted into the first cylindrical portion 21 so as to be able to move in and out. The third cylindrical portion 23 is inserted into the second cylindrical portion 22 so as to be able to move in and out.

[0021] Hereinafter, the end of each cylindrical section 21-23 in the direction of the central axis that is on the side of the cover 30 will be referred to as the right end, and the end of each cylindrical section 21-23 in the direction of the central axis that is opposite to the right end will be referred to as the left end. The left end of the first cylindrical section 21 is fixed to the door 2 with annular double-sided tape 4A. The fixing work of the first cylindrical section 21, that is, the cylindrical body 20, is performed by the user of the door scope cover 10.

[0022] <2.2 Regarding each cylindrical section> An annular flange portion 21A extending radially outward is provided at the left end of the first cylindrical portion 21. The double-sided tape 4A described above is attached to the left end of the flange portion 21A. An annular flange portion 21B extending radially inward is provided at the right end of the first cylindrical portion 21.

[0023] An annular flange portion 22A extending radially outward is provided at the left end of the second cylindrical portion 22. An annular flange portion 22B extending radially inward is provided at the right end of the second cylindrical portion 22.

[0024] Then, when the second cylindrical portion 22 is displaced to the right end relative to the first cylindrical portion 21, the flange portion 21B of the first cylindrical portion 21 and the flange portion 22A of the second cylindrical portion 22 interlock with each other (hereinafter also referred to as "locking"), thereby preventing the second cylindrical portion 22 from separating from the first cylindrical portion 21.

[0025] Similarly, the left end of the third cylindrical portion 23 is provided with an annular flange portion 23A extending radially outward. The right end of the third cylindrical portion 23 is provided with an annular flange portion 23B extending radially inward.

[0026] When the third cylindrical portion 23 is displaced to the right end relative to the second cylindrical portion 22, the flange portion 22B of the second cylindrical portion 22 and the flange portion 23A of the third cylindrical portion 23 lock together, thereby preventing the third cylindrical portion 23 from separating from the second cylindrical portion 22.

[0027] In this embodiment, a locking projection 21C is provided on the inner circumferential surface of the left end of the first cylindrical portion 21. The locking projection 21C is a projection that prevents the second cylindrical portion 22 from detaching from the left end and can be locked into the stepped portion 22C of the flange portion 22A.

[0028] Furthermore, the locking projection 21C in this implementation protrudes less from the inner surface of the first cylindrical portion 21 as it approaches the left end. Therefore, the assembler of the door scope cover 10 can easily insert the second cylindrical portion 22 into the first cylindrical portion 21 during assembly.

[0029] In this embodiment, the external dimensions of the cover 30 are larger than those of the third cylindrical portion 23. Therefore, the third cylindrical portion 23 is prevented from detaching from the second cylindrical portion 22 from the left end. The external dimensions of the cover 30 are smaller than those of the second cylindrical portion 22.

[0030] <2.3 Rotation Restriction Section> As shown in Figure 10, the door scope cover 10 according to this embodiment is provided with at least one (or more in this embodiment) rotation restricting portion 24. Each rotation restricting portion 24 functions to restrict one of two cylindrical portions that slide in contact with each other from rotating about the central axis relative to the other cylindrical portion.

[0031] In other words, each rotation restricting unit 24 has the function of restricting the rotation of the second cylindrical portion 22 relative to the first cylindrical portion 21 around its central axis, and the function of restricting the rotation of the third cylindrical portion 23 relative to the second cylindrical portion 22 around its central axis.

[0032] Each rotation restricting portion 24 in this embodiment is configured to have a projection 24A and a locking portion 24B, etc. Each projection 24A is provided on the outer cylinder portion and is a convex portion that protrudes from the outer cylinder portion toward the inner cylinder portion.

[0033] Each projection 24A in this embodiment is composed of a ridge extending in the direction of the central axis. The outer cylinder portion refers to the outermost cylinder portion of two cylinder portions that slide in contact with each other. The inner cylinder portion refers to the innermost cylinder portion of two cylinder portions that slide in contact with each other.

[0034] Each locking portion 24B is provided on the inner cylinder and is a stepped portion that contacts each projection 24A in the circumferential direction. Each locking portion 24B is locked to the corresponding projection 24A by sliding contact with it.

[0035] <2.4 Expansion Control Section> As shown in Figure 11, the door scope cover 10 according to this embodiment includes an expansion / contraction restricting portion 25. The expansion / contraction restricting portion 25 functions to restrict the displacement of the inner cylinder portion relative to the outer cylinder portion in the direction of the central axis.

[0036] In other words, the expansion / contraction restricting portion 25 has the function of restricting the displacement of the second cylindrical portion 22 relative to the first cylindrical portion 21 in the direction of the central axis, and the function of restricting the displacement of the third cylindrical portion 23 relative to the second cylindrical portion 22 in the direction of the central axis.

[0037] In other words, the expansion and contraction restricting portion 25 according to this embodiment, as shown in Figure 12, has at least one (in this embodiment, multiple) locking portion 25A and wedge portions 25B and 25C, and is a member that can be attached to and detached from the cylindrical body 20.

[0038] The locking portion 25A is a flange-shaped portion that hooks onto and locks the left end of the first cylindrical portion 21, as shown in Figure 13. The wedge portion 25B is a portion that presses against the inner circumferential surface 21D of the first cylindrical portion 21 and the outer circumferential surface 22D of the second cylindrical portion 22. The wedge portion 25C is a portion that presses against the inner circumferential surface 21E of the second cylindrical portion 22 and the outer circumferential surface 23D of the third cylindrical portion 23.

[0039] Specifically, the thickness dimension T1 of the wedge portion 25B (see Figure 12) is larger than the gap dimension between the inner circumferential surface 21D of the first cylindrical portion 21 and the outer circumferential surface 22D of the second cylindrical portion 22. Similarly, the thickness dimension T2 of the wedge portion 25C (see Figure 12) is larger than the gap dimension between the inner circumferential surface 21E of the second cylindrical portion 22 and the outer circumferential surface 23D of the third cylindrical portion 23.

[0040] Therefore, at the contact point between the wedge portion 25B and the outer circumferential surface 22D of the second cylindrical portion 22, a frictional force is generated that restricts the displacement of the second cylindrical portion 22. Similarly, at the contact points between the inner circumferential surface 21E of the second cylindrical portion 22 and the outer circumferential surface 23D of the third cylindrical portion 23 and the wedge portion 25C, a frictional force is generated that restricts the displacement of the second cylindrical portion 22 and the third cylindrical portion 23.

[0041] The gap dimension between the inner circumferential surface 21D of the first cylindrical portion 21 and the outer circumferential surface 22D of the second cylindrical portion 22 is the protruding dimension of the flange portion 21B with respect to the inner circumferential surface 21D. The gap dimension between the inner circumferential surface 21E of the second cylindrical portion 22 and the outer circumferential surface 23D of the third cylindrical portion 23 is the protruding dimension of the flange portion 22B with respect to the inner circumferential surface 21E.

[0042] Furthermore, "pressure welding" refers to a state in which contact occurs with a contact pressure equal to or greater than a predetermined contact pressure. The predetermined contact pressure refers to the contact pressure at which a "frictional force" is generated that is sufficient to restrict the displacement of the second cylindrical portion 22 and the third cylindrical portion 23 relative to the expansion and contraction restricting portion 25.

[0043] <2.5 Marker> As shown in Figure 1, at least one (two in this embodiment) marker 26 is provided on the outer circumferential surface of the cylindrical body 20 (flange portion 21A in this embodiment). Each marker 26 constitutes a mark indicating a direction perpendicular to the central axis of the cylindrical body 20.

[0044] In this embodiment, each marker 26 is a protrusion extending from the flange portion 21A, and is configured such that the direction of extension of the protrusion coincides with the direction perpendicular to the central axis of the cylindrical body 20.

[0045] Furthermore, the rotation center O1 of the cover 30 and the center of the open end 23C are located on the imaginary line Lo. The imaginary line Lo is an imaginary line that is perpendicular to the central axis of the cylindrical body 20 and coincides with the extension direction of each marker 26.

[0046] <3. Features of the door scope cover according to this embodiment> The cylindrical body 20 surrounding the outer edge of the peephole 3 is expandable and contractible in the direction of the central axis, as shown in Figures 2 and 4. This allows the door scope cover 10 according to this embodiment to accommodate door scopes 1 with various protrusion dimensions. Note that the expansion / contraction restricting part 25 is not necessary when the cylindrical body 20 is used in its extended state.

[0047] The door scope cover 10 is equipped with an expansion / contraction restricting section 25 that restricts the expansion and contraction of the cylindrical body 20. This prevents the cylindrical body 20 from expanding or contracting at unintended times, such as when opening or closing the cover 30, when a user uses the door scope cover 10 by retracting the cylindrical body 20.

[0048] Incidentally, the reasons why the cylindrical body 20 expands or contracts at times unintended by the user include, for example, the inertial force acting on the cylindrical body 20 when the door 2 is opened or closed, and the impact force when the door 2 collides with the door frame (not shown).

[0049] The door peephole cover 10 includes a rotation restricting part 24 that restricts one of the two cylindrical parts, which slide in contact with each other, from rotating about its central axis relative to the other cylindrical part. This prevents the center of the opening end 23C from shifting significantly relative to the center of the peephole 3 when the user extends the cylindrical body 20.

[0050] The door scope cover 10 is equipped with a marker 26 that forms a guide indicating a direction perpendicular to the central axis of the cylindrical body 20. As a result, when the user fixes the door scope cover 10 to the door 2 so that the extension direction of the marker 26 coincides with the vertical direction, the rotation center O1 of the cover 30 and the center of the opening end 23C are automatically positioned on a vertical line.

[0051] Furthermore, when the door scope cover 10 is attached to the door 2 such that "the rotation center O1 of the cover 30 and the center of the opening end 23C are located on a vertical line," "the cover 30 will not shift to either the left or the right."

[0052] Furthermore, when using the door scope cover 10 according to this embodiment with the cylindrical body 20 in a reduced size, the user can also attach the second double-sided tape 4B to the inside of the double-sided tape 4A, as shown in Figure 14.

[0053] Incidentally, users can optionally attach the double-sided tape 4B. In other words, it is up to the user whether or not to attach the double-sided tape 4B. When the double-sided tape 4B is attached, the second cylindrical portion 22 and the third cylindrical portion 23 are also fixed to the door 2 via the double-sided tape 4B, as shown in Figures 6 and 7.

[0054] (Second Embodiment) The expansion / contraction restricting section 25 in the above-described embodiment utilized frictional force. In contrast, the expansion / contraction restricting section 25 in this embodiment mechanically restricts the expansion and contraction of the cylindrical body 20 by locking the expansion / contraction restricting section 25 with the second cylindrical section 22 and the third cylindrical section 23.

[0055] The following description concerns the differences between this embodiment and the expansion / contraction restricting section 25 according to the above embodiment. Note that components identical to those in the above embodiment are denoted by the same reference numerals. Therefore, redundant explanations are omitted in this embodiment.

[0056] As shown in Figure 15, in the expansion / contraction restricting portion 25 of this embodiment, a second locking portion 25D and a third locking portion 25E are provided instead of the wedge portions 25B and 25C. The locking portion 25A is locked to the left end side of the first cylindrical portion 21, similar to the first embodiment.

[0057] When the expansion / contraction restricting portion 25 is attached to the cylindrical body 20, the second locking portion 25D is locked to the flange portion 22A of the second cylindrical portion 22 (see Figure 16), and the third locking portion 25E is locked to the flange portion 23A of the third cylindrical portion 23 (see Figure 17).

[0058] (Third embodiment) The cylindrical body 20 in the above-described embodiment was composed of multiple cylindrical sections. In contrast, the cylindrical body 20 in this embodiment is composed of a cylindrical member having a bellows-shaped expandable section 27, as shown in Figures 18 and 19.

[0059] As a result, the cylindrical body 20 according to this embodiment can also be deformed to expand and contract in the direction of the central axis. Note that components identical to those in the above-described embodiment are denoted by the same reference numerals. Therefore, redundant explanations are omitted in this embodiment.

[0060] (Other embodiments) The first cylindrical portion 21, the second cylindrical portion 22, and the third cylindrical portion 23 in the above-described embodiment were substantially cylindrical members. However, the disclosure is not limited thereto. That is, the disclosure may be, for example, elliptical, rectangular, conical, or pyramidal.

[0061] The rotation restricting portion 24 according to the above embodiment had a configuration in which a projection 24A was provided on the outer cylinder portion and a locking portion 24B was provided on the inner cylinder portion. However, the present disclosure is not limited thereto. In other words, the disclosure may be, for example, (1) a rotation restricting part having a projection 24A on the inner cylinder and a locking part 24B on the outer cylinder, (2) a rotation restricting part having one projection and a groove into which the projection is slidably fitted, or (3) a configuration in which the rotation restricting part 24 is eliminated.

[0062] In the embodiment described above, an expansion / contraction restricting portion 25 was provided. However, this disclosure is not limited thereto. That is, the disclosure may also include, for example, a configuration in which the expansion / contraction restricting portion 25 is abolished, or a configuration in which the expansion / contraction restricting portion 25 is abolished and the expansion / contraction of the cylindrical body 20 is restricted only by the second double-sided tape 4B.

[0063] The expansion / contraction restricting portion 25 in the above-described embodiment was composed of a separate member that could be attached to or removed from the cylindrical body 20. However, the disclosure is not limited thereto. That is, the disclosure may include, for example, a configuration in which, of two cylindrical portions that slide in contact with each other, one cylindrical portion is provided with a snap-fit ​​type locking portion that can be locked to a locking portion provided on the other cylindrical portion.

[0064] In the embodiments described above, it was assumed that the door scope cover 10 would be fixed to the door 2 such that the extension direction of each marker 26 coincided with the vertical direction. However, the disclosure is not limited thereto. That is, the disclosure may also include, for example, a configuration in which the door scope cover 10 is fixed to the door 2 such that the extension direction of the marker 26 coincides with the horizontal direction.

[0065] Each marker 26 in the above-described embodiment was composed of a ridge integrally molded with the first cylindrical portion 21. However, the disclosure is not limited thereto. That is, the disclosure may also include, for example, a marker composed of a groove molded in the first cylindrical portion 21, a marker composed of printing or transfer, or a configuration in which such a marker is eliminated.

[0066] The cylindrical body 20 according to the first embodiment was composed of three cylindrical sections. However, the disclosure is not limited thereto. That is, the disclosure may be composed of, for example, at least two cylindrical sections that are displaceable relative to each other in the direction of the central axis. In other words, the cylindrical body 20 may be composed of two cylindrical sections, or of four or more cylindrical sections.

[0067] The expansion / contraction restricting portion 25 according to the first embodiment had a configuration that included a locking portion 25A in addition to wedge portions 25B and 25C. However, the disclosure is not limited thereto. That is, the disclosure may also have a configuration in which, for example, the locking portion 25A is eliminated.

[0068] In the first embodiment, the wedge portion 25B was pressed against the inner circumferential surface 21D of the first cylindrical portion 21 and the outer circumferential surface 22D of the second cylindrical portion 22, and the wedge portion 25C was pressed against the inner circumferential surface 21E of the second cylindrical portion 22 and the outer circumferential surface 23D of the third cylindrical portion 23.

[0069] However, the disclosure is not limited thereto. That is, the disclosure may also be configured such that, for example, the locking portion 25A is locked to the left end of the first cylindrical portion 21, the wedge portion 25B is pressed against the outer circumferential surface 22D of the second cylindrical portion 22, and the wedge portion 25C is pressed against the outer circumferential surface 23D of the third cylindrical portion 23.

[0070] The door scope cover 10 according to the above embodiment was fixed to the interior side of the door. However, this disclosure is not limited thereto. That is, the disclosure is also applicable, for example, to a door scope cover fixed to the exterior side of the door.

[0071] Furthermore, this disclosure is not limited to the embodiments described above, but is sufficient to be consistent with the intent of the disclosures described in the embodiments described above. Therefore, it may be a configuration in which at least two of the embodiments described above are combined, or a configuration in which any of the illustrated components or components described with reference numerals in the embodiments described above are omitted. [Explanation of Symbols]

[0072] 1... Door peephole 2...door 10... Door peephole cover 20...Cylinder 21...First cylindrical part 22...Second cylinder part 23...Third cylinder part 24... Rotation restricting section 25... Expansion control section

Claims

1. In a door peephole cover, A cylindrical body for surrounding the outer edge of the aforementioned peephole, comprising a cylindrical body that is expandable and contractible in the direction of the central axis, A cover that is displaceable between a position that closes the open end of the cylindrical body and a position that opens the open end, The cylindrical body is equipped with an expansion / contraction restricting section that restricts expansion and contraction, The aforementioned cylindrical body is A cylindrical first cylindrical portion for surrounding the outer edge of the aforementioned peephole, A cylindrical second cylindrical portion for surrounding the outer edge of the peephole, wherein the second cylindrical portion is displaceable relative to the first cylindrical portion while its central axis coincides with the central axis of the first cylindrical portion. A door peephole cover comprising at least the following:

2. The second cylindrical portion is inserted into the first cylindrical portion so as to be able to extend and retract. The aforementioned expansion / contraction restricting portion is a member that can be detachably attached to the cylindrical body, Furthermore, the expansion and contraction restricting section is The wedge portion has contact with the inner circumferential surface of the first cylindrical portion and the outer circumferential surface of the second cylindrical portion to generate a frictional force that restricts the displacement of the second cylindrical portion. The door peephole cover according to claim 1.

3. The expansion and contraction restricting portion has, in addition to the wedge portion, a locking portion that engages with one end of the first cylindrical portion in the direction of the central axis. The door peephole cover according to claim 2.

4. The door scope cover according to any one of claims 1 to 3, further comprising a rotation restricting portion that restricts the second cylindrical portion from rotating about a central axis relative to the first cylindrical portion.

5. The door scope cover according to any one of claims 1 to 3, further comprising a marker provided on the outer circumferential surface of the cylindrical body, which constitutes a mark indicating a direction perpendicular to the central axis of the cylindrical body.

6. The aforementioned expansion / contraction restricting portion is a member that can be detachably attached to the cylindrical body, Furthermore, the expansion and contraction restricting section is A first locking portion that is locked to one end of the first cylindrical portion in the direction of the central axis, and Having a second locking portion that engages with the second cylindrical portion The door peephole cover according to claim 1.

7. In a door peephole cover, A cylindrical body for surrounding the outer edge of the aforementioned peephole, comprising a cylindrical body that is expandable and contractible in the direction of the central axis, The cylindrical body is provided with a cover that is displaceable between a position that closes the open end and a position that opens the open end, The aforementioned cylindrical body is a door viewer cover composed of a cylindrical member having a bellows-like expandable section.

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