Opening and closing mechanism and underfloor inspection opening

Abstract

To improve safety without opening a lid when a downward load is applied in a first state where the lid covers a recess.SOLUTION: An opening / closing mechanism 60 includes a body base 10 having a first recess and a second recess 21, and a lid 40. A support mechanism for movably supporting the lid 40 with respect to the body base 10 is provided on a side surface defining the second recess 21 and a side surface of the lid. The side surface defining the second recess 21 is formed with a support portion 30 that contacts a lower portion of the lid 40 in a first state where the lid 40 covers the second recess 21. The support mechanism is configured such that the lid 40 can take the first state, a second state where the lid 40 is moved in a first direction from the first state, and a third state where the lid 40 is moved below the second recess 21 to open the second recess 21 in an upright state in which the lid 40 is rotated about a rotation axis G from the second state, with respect to the body base 10.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to an opening and closing mechanism for a lid provided on a floor or a floor member, etc., and an underfloor inspection opening provided with the same.

Background Art

[0002] In recent years, as an embedded weighing scale embedded in a recess formed on the floor surface, an opening (second recess) that opens into a notch formed on the upper surface of the embedded weighing scale, a space communicating with the opening, and a lid portion that covers the opening by being disposed in the notch are provided (see Patent Document 1). This embedded weighing scale is configured such that the lid portion covering the opening can be removed from the notch, and the embedded weighing scale can be removed from the floor surface using the opening.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the notch of the embedded weighing scale described in Patent Document 1 above, when the lid portion completely covers the opening, a clearance for placing a finger on the side surface of the lid portion is provided. By applying a load that deforms the lid portion so that the hole of the lid portion is crushed from the clearance side, the lock of the lock mechanism of the lid portion is released, and the lid portion can be removed from the notch. However, when such a clearance is provided, for example, it becomes easier for the user's toe to contact the vicinity of the side surface of the lid portion. That is, the lid portion is unexpectedly pushed and stepped on obliquely downward from the clearance side by the user's toe, so that the lid portion is deformed as described above and the lock is released. As a result, the lid portion is easily detached from the notch, and problems such as the user tripping occur.

[0005] Therefore, an object of the present invention is to provide an opening / closing mechanism and an underfloor inspection port that improve safety by not opening when a downward load is applied in a first state where a lid covers a recess.

Means for Solving the Problems

[0006] The opening / closing mechanism of the present invention includes a main body base having a recess opening upward, and a lid that can be arranged to cover the recess. On the side surface defining the recess and the side surface of the lid, a support mechanism is provided that supports the lid so that it can move in a first direction with respect to the main body base and rotate about a rotation axis parallel to a second direction orthogonal to the first direction. On the side surface defining the recess, a support portion that contacts the lower portion of the lid in a first state where the lid covers the recess is formed. The support mechanism is configured such that the lid can take a first state, a second state in which the lid is moved in the first direction from the first state, and a third state in which the lid is rotated about the rotation axis from the second state and moved downward to the lower side of the recess to open the recess with respect to the main body base.

[0007] According to this, in the first state (closed state) where the lid covers the recess, since the lower portion of the lid and the support portion are in contact and the lid is supported by the support portion, the lid maintains the first state even when a downward load is applied to the lid. That is, since the lid does not open, safety is maintained. The support mechanism enables the lid to take a first state to a third state (open state) with respect to the main body base (mounting base). Therefore, in the third state, the lid can be opened to open the recess. For this reason, it is suitable for forming a handle for a floor or a floor member (such as an underfloor inspection port) or forming a storage recess. Further, if another recess is provided adjacent to the recess so as to communicate with it, and a weighing scale (body composition analyzer) is installed in this other recess so as to be embedded, the user can easily remove the weighing scale from the other recess using the recess.

[0008] In the present invention, the support mechanism preferably includes a pair of protrusions protruding in the second direction from two side surfaces that define the concave portion and face each other while being spaced apart from each other in the second direction, and a pair of long holes formed on two side surfaces of the lid that are spaced apart from each other in the second direction, extending in the first direction, and into which the pair of protrusions are inserted. Thereby, the support mechanism has a simple configuration.

[0009] Further, in the present invention, a protruding portion is formed on the lower surface of the lid, and a fitting concave portion into which the protruding portion fits is formed in the support portion in the first state. The fitting concave portion preferably restricts the movement of the lid in the first direction in the first state. Thereby, it becomes possible to restrict the movement of the lid in the first direction in the first state, and it becomes difficult for the lid to move in the first direction when a downward load is applied to the lid. For this reason, it becomes difficult for the lid to open inadvertently, and safety is further improved. No. In the present invention, in the moving direction when the lid moves from the first state to the second state, it is preferable that an inclined surface that inclines upward as it progresses from upstream to downstream is formed at the downstream end of the bottom surface of the fitting concave portion. Thereby, when no downward load is applied to the lid, the engagement between the protruding portion and the fitting concave portion can be easily released, the lid can be moved in the first direction, and the lid can be easily opened. For example, if a notch (depression) is formed at the upper surface position facing the protruding portion of the lid and a slight slit is formed between the concave portion of the main body base in the first state, a thin member such as a coin or a fingertip can be hooked on this slit to easily slide the lid in the first direction, and the lid can be brought into the second state.

[0010] In the present invention, in the moving direction when the lid moves from the first state to the second state, it is preferable that an inclined surface that inclines upward as it progresses from upstream to downstream is formed at the downstream end of the bottom surface of the fitting concave portion. Thereby, when no downward load is applied to the lid, the engagement between the protruding portion and the fitting concave portion can be easily released, the lid can be moved in the first direction, and the lid can be easily opened. For example, if a notch (depression) is formed at the upper surface position facing the protruding portion of the lid and a slight slit is formed between the concave portion of the main body base in the first state, a thin member such as a coin or a fingertip can be hooked on this slit to easily slide the lid in the first direction, and the lid can be brought into the second state.

[0011] The underfloor inspection port of the present invention includes a main body base having a first recess opening upward and a second recess opening upward that is disposed around the first recess and communicates with the first recess, a lid that can be disposed to cover the second recess, and a weighing scale that is detachable from the first recess. On the side surface defining the second recess and the side surface of the lid, a support mechanism is provided that supports the lid so that it can move in a first direction with respect to the main body base and rotate about a rotation axis parallel to a second direction orthogonal to the first direction. On the side surface defining the second recess, a support portion that abuts against the lower portion of the lid in a first state where the lid covers the second recess is formed. The support mechanism is configured such that the lid can assume a first state, a second state in which the lid is moved in the first direction from the first state, and a third state in which the lid is rotated about the rotation axis from the second state and moved below the second recess to open the second recess with respect to the main body base.

[0012] According to this, in the first state (closed state) where the lid covers the second recess, since the lower portion of the lid and the support portion are in contact and the lid is supported by the support portion, the lid maintains the first state even when a downward load is applied to the lid. That is, since the lid does not open, safety is maintained. The support mechanism enables the lid to assume a third state (open state) from the first state with respect to the main body base. Therefore, in the third state, the lid can be opened to open the second recess. As a result, the user can remove the weighing scale from the first recess using the second recess.

Advantages of the Invention

[0013] According to the opening and closing mechanism of the present invention, in the first state (closed state) where the lid covers the recess, since the lower portion of the lid and the support portion are in contact and the lid is supported by the support portion, the lid maintains the first state even when a downward load is applied to the lid. That is, since the lid does not open, safety is maintained. The support mechanism enables the lid to assume a third state (open state) from the first state with respect to the main body base. Therefore, in the third state, the lid can be opened to open the recess. According to the underfloor inspection opening of the present invention, in the first state (closed state) where the lid covers the second recess, since the lower part of the lid and the support part are in contact and the lid is supported by the support part, even if a downward load is applied to the lid, the lid maintains the first state. That is, since the lid does not open, safety is ensured. The support mechanism enables the lid to take the third state (open state) from the first state with respect to the main body base. Therefore, in the third state, the lid can be opened to release the second recess. For this reason, the user can remove the weighing scale from the first recess using the second recess.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Embodiments for Carrying Out the Invention

[0015] Hereinafter, a preferred embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the underfloor inspection port 1 according to the present embodiment is installed in an opening (both not shown) formed in a flat floor surface, and has an opening / closing mechanism 60 and a weighing scale 2. The weighing scale 2 is an embedded weighing scale configured to be able to measure the weight of a user. The weighing scale 2 is a digital measuring device that can acquire, in addition to the weight of the user, the amount of body fat and other biological information. The weighing scale 2 of the present embodiment is, for example, a battery-integrated weighing scale and can function independently as a weighing scale without requiring external power supply.

[0016] As shown in FIG. 1, the opening / closing mechanism 60 has a main body base 10 installed in an opening formed in the floor surface and two lids 40, and each lid 40 is configured to be openable and closable with respect to the main body base 10. The main body base 10 in the present embodiment has a substantially square planar shape, but may have any planar shape.

[0017] As shown in FIG. 2, a first recess 11 and two second recesses 21 are formed in the main body base 10. Both the first recess 11 and the second recess 21 are formed to open upward. The first recess 11 is formed at the center of the main body base 10. The two second recesses 21 are arranged around the first recess 11 and both communicate with the first recess 11. The two second recesses 21 are arranged point-symmetrically about the center point C of the main body base 10.

[0018] As shown in Fig. 3, the second recess 21 is defined by three side surfaces 22 to 24 and a bottom surface 25. The portion facing the side surface 24 of the second recess 21 is open toward the first recess 11, and the second recess 21 and the first recess 11 communicate with each other through this portion. The two side surfaces 22 and 23 have, in the plane, a first direction parallel to one side 10a of the outer shape of the main body base 10 and a vertical direction. Also, the two side surfaces 22 and 23 are arranged to face each other while being separated from each other in a second direction (a direction parallel to the other side 10b adjacent to one side of the outer shape of the main body base 10) orthogonal to the first direction. Further, the second recess 21 is formed in a substantially rectangular planar shape that is elongated in the second direction by the three side surfaces 22 to 24. The first and second directions in the present embodiment are horizontal directions, but may be slightly inclined vertically. Also, the first direction, the second direction, and the vertical direction are shown in reflection in each figure.

[0019] As shown in Fig. 3, a pair of protrusions 26 protruding in the second direction are formed on the two side surfaces 22 and 23. Although the protrusion 26 formed on the side surface 23 is not shown in Fig. 3, it is formed at a position of the side surface 23 facing the protrusion 26 formed on the side surface 22 in the second direction. That is, the pair of protrusions 26 are arranged symmetrically with respect to a center line L parallel to the first direction passing through the center point C. Also, the pair of protrusions 26 are inclined so that their tip surfaces approach the formed side surfaces 22 and 23 as they go upward. Thereby, the protrusions 26 can be easily inserted into a long hole 42 (described later) of the lid 40, and the lid 40 can be easily attached to the main body base 10.

[0020] A support portion 30 is formed in the second recess 21. The support portion 30 has a first support portion 31 and a pair of second support portions 32. The first support portion 31 is formed to protrude from the side surface 24. Further, the first support portion 31 extends in the vertical direction, the upper end thereof is located slightly above the vertical center of the side surface 24, and the lower end is connected to the bottom surface 25. A fitting recess 31b is formed at the center of the upper surface 31a of the first support portion 31 in the second direction. An inclined surface 31c that inclines upward as it moves away from the side surface 24 along the first direction is formed at one end of the bottom surface of the fitting recess 31b (the end far from the side surface 24 in the first direction). In other words, in the moving direction (left direction in FIG. 7) when the lid 40 moves from the first state to the second state as described later, an inclined surface 31c that inclines upward as it moves from the upstream to the downstream is formed at the downstream end (one end) of the bottom surface of the fitting recess 31b.

[0021] The second support portions 32 are formed to protrude from the two side surfaces 22 and 23, respectively. That is, the pair of second support portions 32 are arranged symmetrically with respect to the center line L parallel to the first direction passing through the center point C. The second support portion 32 extends in the vertical direction, the upper end thereof is located slightly above the vertical center of the side surfaces 22 and 23, and the lower end is connected to the bottom surface 25. More specifically, the second support portion 32 is formed such that its upper surface 32a is at the same height level as the upper surface 31a of the first support portion 31. The second support portion 32 is formed to extend from the center of the side surfaces 22 and 23 to the end on the side of the first recess 11 in the first direction. That is, a gap 35 is formed between the second support portion 32 and the side surface 24 in the first direction. Further, a protruding portion 32b that protrudes upward is formed on the upper surface 32a of the second support portion 32. An inclined surface 32c that inclines upward as it moves away from the side surface 24 along the first direction is formed on the protruding portion 32b.

[0022] Since the two lids 40 have the same configuration, only one lid 40 will be described. As shown in FIG. 4, the lid 40 is capable of covering the second recess 21 and, as shown in FIG. 5, is also capable of opening the second recess 21. As shown in FIG. 6, the lid 40 is a plate-shaped member having a substantially rectangular parallelepiped shape that is long in the second direction. Long holes 42 and cutouts 43 are respectively formed in both side surfaces 41 of the lid 40 in the second direction. These pair of long holes 42 and pair of cutouts 43 are also formed symmetrically with respect to the center line L parallel to the first direction passing through the center point C shown in FIG. 4.

[0023] As shown in FIG. 6, the long hole 42 extends in the first direction and is formed to a size into which the protrusion 26 can be inserted. By the pair of long holes 42 and the pair of protrusions 26, as shown in FIGS. 4, 5, and 7, a support mechanism is configured to support the lid 40 so as to be movable in the first direction with respect to the main body base 10 and rotatable about a rotation axis G (i.e., the central axis of the protrusion 26) parallel to the second direction.

[0024] Due to such a pair of long holes 42 and a pair of protrusions 26, the lid 40 can successively take the first state shown in FIG. 7(a), the second state shown in FIG. 7(b), and the third state shown in FIG. 7(c) with respect to the main body base 10. More specifically, as shown in FIG. 7(a), the first state is a state (closed state) in which the lid 40 covers the second recess 21 so that the upper part of the second recess 21 is closed. The second state is a state in which, as shown in FIG. 7(b), the lid 40 is moved leftward in the drawing (the direction in which the lid 40 approaches the first recess 11) along the first direction, and the upstream end (the right end in the drawing) of the moving direction of the lid 40 is just moved to a position that does not overlap the first support portion 31 along the vertical direction. The third state is an open state in which, as shown in FIG. 7(c), the lid 40 is rotated about the rotation axis G by about 90° from the second state so that the right end of the lid 40 is disposed in the gap 35, and is moved below the second recess 21 to open the second recess 21.

[0025] As shown in Fig. 7(a), the notch 43 of the lid 40 is formed at the end on the side of the first recess 11 rather than the center of the lid 40 in the first direction when the lid 40 is in the first state. Further, the notch 43 is formed such that an inclined surface 43a capable of abutting against the entire inclined surface 32c of the protruding portion 32b is formed on the lid 40 when the lid 40 is in the first state.

[0026] As shown in Fig. 6, the lid 40 has a protruding plate portion 44. As shown in Fig. 7(a), when the lid 40 is in the first state, the protruding plate portion 44 is disposed at the upper end of the end on the side of the first recess 11 of the lid 40 and protrudes from the side surface on the side of the first recess 11 of the lid 40 toward the first recess 11. The protruding plate portion 44 has a smaller thickness than other portions of the lid 40 in the vertical direction, and an inclined surface 44a is formed on its lower surface. With such a protruding plate portion 44, when the lid 40 is in the first state, it is possible to cover the upper end of the first recess 11 side of the second recess 21. Further, since the inclined surface 44a is formed on the protruding plate portion 44, as shown in Fig. 7(b), when the lid 40 changes from the first state to the second state, the inclined surface 44a can easily ride over the upper corner of the weighing scale 2, and the lid 40 can be smoothly changed from the first state to the second state. Further, since the inclined surface 32c is also formed on the protruding portion 32b, the lid 40 can be more smoothly changed from the first state to the second state. Further, since the inclined surface 43a that inclines following the inclined surface 32c is formed in the notch 43, when the lid 40 is in the first state, the support area of the lid 40 increases and the lid 40 becomes stable. The upper surface 31a of the first support portion 31 and the upper surfaces 32a of the pair of second support portions 32 abut against the lower surface of the lid 40 when the lid 40 is in the first state and support the lid 40 from below.

[0027] As shown in Fig. 5, the lid 40 has a protrusion 47. As shown in Fig. 7(a), when the lid 40 is in the first state, the protrusion 47 is formed to protrude downward from the lower surface of the lid 40 and is disposed at the end on the side farthest from the first recess 11 of the lid 40. Further, the protrusion 47 is formed to have a size that can be accommodated in the fitting recess 31b when the lid 40 is in the first state. Also, the fitting recess 31b engages with the protrusion 47 when the lid 40 is in the first state to restrict the movement of the lid 40 in the first direction. Thereby, when a person's weight is applied to the lid 40, the movement of the lid 40 in the first direction in the first state can be restricted, the lid 40 can be prevented from being inadvertently opened, and the safety as a floor member is further improved.

[0028] Further, since the inclined surface 31c is formed in the fitting recess 31b, the engagement between the protrusion 47 and the inclined surface 31c can be released and the lid 40 can easily move in the first direction (toward the first recess 11) when no downward load is applied to the lid 40.

[0029] Subsequently, the operation of the lid 40 when removing the weighing scale 2 will be described. As shown in Fig. 1, normally, when the under-floor inspection opening 1 is installed in the opening of the floor surface, the two lids 40 are in the first state and the upper parts of the respective second recesses 21 are closed. At this time, the weighing scale 2 is disposed in the first recess 11. When removing the weighing scale 2 from the first recess 11, first, the lid 40 in the first state shown in Fig. 7(a) is changed to the second state shown in Fig. 7(b). That is, the user slides one of the two lids 40 slightly from the first state toward the first recess 11 side. That is, the lid 40 is moved in the first direction (left direction in Fig. 7(b)) to the second state. A notch (depression) is formed at the upper surface position of the lid 40 facing the protrusion 47, and a slight slit 48 is formed between the side surface 24 of the second recess 21 of the main body base 10 in the first state (see Fig. 4). By hooking a thin member such as a coin or a fingertip on this slit 48 and pushing the lid 40 toward the first recess 11 (the first direction), the engagement between the protrusion 47 of the lid 40 and the fitting recess 31b of the support portion 30 can be released, the lid 40 can be slid to the first recess 11 side, and the lid 40 can be set to the second state (Fig. 7(b)).

[0030] Next, as shown in FIG. 7(c), the user rotates the lid 40 about the rotation axis G from the second state to an upright state so that the right end of the lid 40 is disposed in the gap 35. After that, the user moves the upright lid 40 downward to approach the bottom surface 25 of the second recess 21 to bring it into a third state. Thus, the lid 40 assumes the third state from the first state, and the upper part of the second recess 21 is opened. After that, the other lid 40 is also made to assume the third state from the first state in the same manner as one lid 40. Then, the user inserts a finger or the like between each lid 40 and the weighing scale 2, grips the side surface of the weighing scale 2, and lifts and removes it from the first recess 11. Thus, the removal operation of the weighing scale 2 is completed. Note that the operation of attaching the weighing scale 2 to the first recess 11 is performed in the reverse order of this removal operation.

[0031] As described above, in the lid opening and closing mechanism of the present invention, the lid and the main body (mounting) base are relatively movable and rotatable by the engagement of a pair of long holes provided on both side walls of the lid and a pair of protrusions (shafts) provided at both ends of the opening wall of the main body base. When a load is applied from above with the lid closing the opening of the main body base, the convex portion (protruding portion) at the lower end of the tip of the lid engages with the (fitting) concave portion in the opening of the main body base, thereby prohibiting the lid from moving in the horizontal direction (first direction) and the tip side from sinking. When opening the lid, the lid is slid slightly toward the rear end side along the long hole to release the engagement of the convex and concave portions, and the lid is rotated by pushing in the tip so that the rear end of the lid on the sliding direction side stands up. Then, the standing lid is pushed into the lower part of the main body base from the tip and stored, so that an opening can be formed in the main body base. Further, in the opening and closing mechanism 60 of the underfloor inspection port 1 of the present invention, in the first state where the lid 40 covers the second concave portion 21, the lower part of the lid 40 and the support portion 30 are in contact with each other and the lid 40 is supported by the support portion 30. Therefore, even if a downward load is applied to the lid 40, the lid 40 maintains the first state. That is, since the lid 40 does not open, safety is ensured. The support mechanism (a pair of long holes 42 and a pair of protrusions 26) enables the lid 40 to take the third state via the second state with respect to the main body base 10. Therefore, in the third state, the lid 40 can be opened to open the second concave portion 21. For this reason, when the weighing scale 2 is installed in the first concave portion 11, the user can remove the weighing scale 2 from the first concave portion 11 by using the second concave portion 21.

[0032] Since the support mechanism that enables the lid 40 to take the first to third states with respect to the main body base 10 is composed of a pair of long holes 42 and a pair of protrusions 26, the support mechanism has a simple structure.

[0033] The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications are possible as long as they are within the scope described in the claims. For example, in the above-described embodiment, the support mechanism that enables the lid 40 to sequentially assume the first to third states with respect to the main body base 10 is constituted by a pair of elongated holes 42 and a pair of protrusions 26. However, a pair of protrusions formed to protrude from both side surfaces of the lid 40 in the second direction and guide grooves formed on the side surfaces 22, 23 of the second recess 21, into which the pair of protrusions are inserted and which enable the lid 40 to be moved so as to sequentially assume the first to third states with respect to the main body base 10 may constitute the support mechanism.

[0034] Further, the protruding portion 47 may not be formed on the lower surface of the lid 40. In this case, the fitting recess 31b may not be formed in the first support portion 31.

Explanation of Reference Numerals

[0035] 1 Floor inspection port 2 Weighing scale 10 Main body base 11 First recess 21 Second recess (recess) 22 - 24 Side surfaces 26 Protrusion 30 Support portion 31b Fitting recess 31c Inclined surface 40 Lid 41 Side surface 42 Elongated hole 47 Protruding portion 60 Opening / closing mechanism

Claims

1. A main body base having a recess opening upward, and a lid that can be arranged to cover the recess, on the side surface defining the recess and the side surface of the lid, a support mechanism is provided that supports the lid so as to be movable in a first direction with respect to the main body base and rotatable about a rotation axis parallel to a second direction orthogonal to the first direction, on the side surface defining the recess, a support portion that abuts against the lower portion of the lid is formed in a first state where the lid covers the recess, The support mechanism is configured such that the lid can take a first state, a second state in which the lid is moved in the first direction from the first state, and a third state in which the lid is rotated about the rotation axis from the second state and moved downward of the recess to open the recess. An opening / closing mechanism characterized by that.

2. The support mechanism is, a pair of protrusions protruding in the second direction from two side surfaces that face each other while being separated from each other in the second direction on the side surface defining the recess, and a pair of long holes formed in two side surfaces of the lid that are separated from each other in the second direction, extending in the first direction and into which the pair of protrusions are inserted. The opening / closing mechanism according to claim 1, characterized by that.

3. A protruding portion is formed on the lower surface of the lid, and a fitting recess into which the protruding portion fits is formed in the support portion in the first state, The fitting recess restricts the movement of the lid in the first direction in the first state. The opening / closing mechanism according to claim 1 or 2, characterized by that.

4. In the moving direction when the lid moves from the first state to the second state, an inclined surface that inclines upward as it proceeds from upstream to downstream is formed at the downstream end of the bottom surface of the fitting recess. The opening / closing mechanism according to claim 3, characterized by that.

5. A main body base having a first concave portion opening upward and a second concave portion arranged around the first concave portion and communicating with the first concave portion and opening upward, A lid that can be arranged to cover the second concave portion, And a weighing scale that can be attached to and detached from the first concave portion, On the side surface defining the second concave portion and the side surface of the lid, a support mechanism is provided that supports the lid so as to be movable in a first direction with respect to the main body base and rotatable about a rotation axis parallel to a second direction orthogonal to the first direction, On the side surface defining the second concave portion, a support portion that abuts against the lower portion of the lid is formed in a first state where the lid covers the second concave portion, The support mechanism is configured such that the lid can take a first state, a second state in which the lid is moved in the first direction from the first state, and a third state in which the lid is rotated about the rotation axis from the second state and moved below the second concave portion to open the second concave portion with respect to the main body base. The inspection port under the floor is characterized by this.

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