JP3104557B2 - Ceiling inspection lid fixing structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for fixing an inspection lid on a ceiling of a unit room or the like, and more particularly, to a structure in which the inspection lid is prevented from rising by a fixture.

[0002]

2. Description of the Related Art In a unit room such as a unit bathroom, an inspection opening 2 is provided in a ceiling panel 1 as shown in FIG. 6 for performing construction, electric work, duct connection work for a ventilation fan, maintenance and inspection, and the like. An inspection lid 3 is attached to the inspection port 2. 4 is a wall panel.

The inspection lid 3 is fitted into the inspection port 1 from above. The inspection lid is held by the ceiling panel 1 by engaging a hook piece (not shown) projecting outward from the periphery of the inspection lid with the edge of the inspection port from above.

[0004] The inspection lid is prevented from floating by wind pressure when the entrance door of the unit room is closed, or the inspection lid is prevented from floating even if it is mischievously pressed from below. For this purpose, the inspection lid is fixed by a fixing tool.

[0005] As such an inspection lid fixing structure, Japanese Utility Model 5-
No. 7392, as shown in FIG. 7, an opening 7 is drilled near the inspection port 6 of the ceiling panel 5, and the edge of the inspection lid 10 is formed with a rod from the upper end of the shaft 8 inserted into the opening 7. An arrangement for holding down is disclosed. A flange 11 is provided at the lower end of the shaft 8, and the flange 11 is in contact with the lower surface of the periphery of the opening 7.

[0006] The flange-like edge 10a of the inspection lid 10 is
It is placed on the upper end of the upright piece 12 at the edge of the inspection opening 6 via a sealing material 13, and is pressed down from above by the rod 9.

[0007]

In the prior art structure shown in FIG. 7, it is necessary to ensure that the rod 9 covers the upper side of the edge 10a in order to firmly fix the inspection lid 10. Become. In Japanese Utility Model Publication No. 5-7392, it is disclosed that a display means for indicating the direction of the rod 9 is provided on the flange 5. However, the state of the rod 9 hooked to the edge 10a is determined from the inside of the unit room. There is a disadvantage that the state of fixation of the inspection lid 10 cannot be directly checked from the inside view because it is not directly visible.

[0008]

According to a first aspect of the present invention, there is provided a ceiling inspection lid fixing structure in which an inspection lid fitted to an inspection port of a ceiling from above is locked to an edge of the inspection port by a fixture. The present invention relates to a ceiling inspection lid fixing structure that prevents the inspection lid from rising.

[0009] The inspection lid is provided with an insertion hole for the fixture in the vicinity of the outer edge. The fixing device includes a shaft body inserted through the insertion hole, an upper locking body provided on the shaft body and locked on an upper surface of an inspection lid around the insertion hole, and a lower side of the shaft portion. possess a lower engaging member which extends to the edge lower surface of the ceiling of the access door is provided, the lower side engagement Tometai is along the lower surface of the inspection lid
And a plate surface on the upper side of the plate-like body.
At the boundary between the outer edge of the inspection lid and the edge of the inspection opening.
Characterized in that a convex portion is provided .

[0010] Ceiling inspection cover fixing structure 請 Motomeko 2, the inspection lid is fitted from above to the ceiling of the access door to engage with the edge of the inspection opening by fasteners, of the inspection lid the raised In the ceiling inspection lid fixing structure that prevents the inspection lid, the inspection lid is provided with an insertion hole for the fixing tool in the vicinity of the outer edge, and the fixing tool has a shaft inserted through the insertion hole and a ceiling. An upper locking body which is disposed on the upper surface side, is fitted with the shaft body, and is locked to an upper surface of the inspection lid around the insertion hole; and an inspection port of the ceiling provided below the shaft portion. possess the edge lower surface until the extended the lower engaging member, said lower engagement Tometai is along the lower surface of the inspection lid
And a plate surface on the upper side of the plate-like body.
At the boundary between the outer edge of the inspection lid and the edge of the inspection opening.
Protrusions are those characterized that you have provided the.

Claims3Ceiling inspection lid fixing structure
2In the above, a flange portion is provided at an upper end portion of the shaft body.In
The upper locking body is vertically moved through the upper part of the shaft body.
A cylindrical shape having an inner hole extending in the direction
The locking body has a slit that is cut down from the upper end face.
Tongues which are flexible between the slits.
And the flange of the shaft body elastically couples the tongue piece.
It has an outer shape that can pass through the inner hole while expanding and deforming.
And the collar portion is locked on the upper surface of the upper locking body.
It is characterized by.

[0012]

In the ceiling inspection lid fixing structure according to the first to third aspects, the fixture is supported by the inspection lid via the upper locking body.
The lower locking body of this fixture extends to the lower surface of the edge of the inspection port on the ceiling, thereby preventing the inspection lid from rising. Since the lower locking body can be directly viewed from below the ceiling (for example, from the indoor side of the unit room), it is directly visually confirmed that the lower locking body surely covers the lower surface of the edge of the inspection opening. You can check.

[0013] Further , a projection is provided at the boundary between the inspection lid and the inspection opening.
So even if some torque is applied to the fixture
The fixing device does not rotate and the inspection lid must be securely fixed.
it can. Also, turn the fixture to fix the inspection lid
And a slight clicking sensation when the projection engages the boundary
Occurs and is sensed by the fingertips of the fixed worker. This allows
The fixer must acknowledge that the fixture has been rotated to the proper angle.
You can easily find out .

In the second and third aspects, the shaft body and the upper locking body are separate bodies, and the shaft body is fitted to the upper locking body.

According to a third aspect of the present invention, the upper portion of the shaft is pushed into the cylindrical upper locking member, and the flange at the upper end of the shaft is passed through the upper locking member and locked on the upper surface of the upper locking member. By doing so, the shaft body is locked by the upper locking body .

[0016]

Embodiments will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of a ceiling inspection cover fixing structure according to the embodiment, and FIG. 2 is a cross-sectional view showing the embodiment structure (II- in FIG. 1).
FIG. 2 is a sectional view of a portion along line II).

An inspection port 16 is provided on the ceiling panel 15,
A standing piece 17 is raised from the edge of the inspection port 16.

An edge 18a of an inspection lid 18 attached to the inspection opening 16 covers an upper side of the standing piece 17 via a sealing material 19. In this embodiment, the ceiling panel 15
The inspection lid 18 is made of a steel plate and a heat insulating material such as a gypsum board.

An insertion hole 20 is provided near the outer edge of the inspection cover 18, and a fixing tool 21 is inserted from below. The fixing tool 21 includes a substantially disk-shaped lower locking body 22, a shaft 23 rising from the upper surface of the lower locking body 22, and an upper locking body 24 provided above the shaft 23. It has.

The upper locking member 24 and the insertion hole 20 have a ground shape in plan view, and the insertion hole 20 is slightly upward so that the upper locking member 24 can pass through the insertion hole 20. It is larger than the locking body 24.

In this embodiment, a pair of pillars 25 are erected from both ends in the longitudinal direction of the upper locking body 24, and a projecting portion 26 protrudes outward from the outer surface of the upper end of each pillar 25. Have been. The outer distal end of the overhang 26 protrudes outward beyond both ends of the upper locking body 24.

The distance between the outer ends of the overhangs 26 is
It is larger than the maximum inner diameter of the insertion hole 20. Therefore, when the upper locking body 24 is inserted into the insertion hole 20, the legs 25 bend in the approaching direction. When the overhang portion 26 passes through the insertion hole 20, the pillar 25 returns to its original shape,
The projecting portion 26 projects to the upper surface side of the insertion hole 20.

A ridge 27 extends in the diameter direction on the upper surface of the lower locking member 22. The extending direction of the ridge 27 is orthogonal to the longitudinal direction of the upper locking body 24.

In order to fix the inspection lid 18 with the fixing tool 21, the upper locking body 24 is inserted into the insertion hole 20 until the lower locking body 22 hits the lower surface of the inspection lid 18, and then about 9
It is only necessary to rotate the 0 ° fixture 21 in the θ direction in FIG. As a result, the lower locking body 22 is locked around the lower surface of the edge of the inspection port 16 of the ceiling panel 15 as shown in FIG. 2, and the inspection lid 18 is prevented from floating.

The degree of engagement of the lower locking member 22 with the ceiling panel 15 can be visually checked directly from the room side of the unit room. Therefore, it is easy to check that the inspection lid 18 is firmly fixed by the fixing tool 21. Can be.

It is to be noted that the fixing tool 21 is set at about 90 ° in the direction of the arrow θ.
When turned, the ridge 27 enters the boundary between the inspection lid 18 and the edge of the inspection port 16. At this time, a slight click feeling occurs,
It is felt by the operator's fingertips. Thereby, the operator can feel that the fixing tool 21 has turned to the lock position with a tactile sensation. Further, in a fixed state in which the ridge 27 enters the boundary as shown in FIG. 2, even if a slight rotational force is applied to the fixing tool 21, the fixing tool 21 does not rotate, and the locking of the fixing tool 21 is performed. Is never released.

In this embodiment, when the fixing device 21 is turned so that the longitudinal direction of the upper locking body 24 coincides with the longitudinal direction of the insertion hole 20 in order to release the lock of the fixing device 21, FIG. As described above, the overhang portions 26, 26 are hooked on both ends of the insertion hole 20, and the fixing tool 21 does not fall off from the inspection lid 18. Therefore, when performing the work above the ceiling with the inspection lid 18 removed, the fixture 21 is prevented from falling off or lost. It is to be noted that the fixing tool 21 is attached to the inspection lid 18 in advance, and then the inspection lid 1 is
It is also possible to use a method of fitting 8 to the inspection port 16.

FIG. 4 is an exploded perspective view of a ceiling inspection cover fixing structure according to another embodiment, and FIG. 5 is a cross-sectional view showing the structure of the embodiment (a cross-sectional view taken along line VV in FIG. 4). ).

In this embodiment, the fixture 21A has a shaft 23A which is thicker than the shaft 23 of the above embodiment. An arc-shaped portion 20a is provided in the insertion hole 20A so that the thick shaft 23A can pass through.

Other configurations of the embodiment of FIGS. 4 and 5 are the same as those of FIGS. 1 and 2, and the same reference numerals indicate the same parts. 4 and 5, the same operation and effect as those of the structure shown in FIGS.

After the fixture 21A is inserted into the insertion hole 20A, when the fixture 21 is rotated in the direction of the arrow θ, the outer peripheral surface of the shaft 23A is in contact with the inner peripheral surface of the arc-shaped portion 20a. As a result, the fixture 21A rotates extremely smoothly. The positioning of the fixing tool 21A is also performed so that the fixing tool 21A is always located at the arc-shaped portion 20a of the insertion hole 20A.

Another embodiment will be described with reference to FIGS.

The fixing tool 21B of the present embodiment is
2 and the shaft body 23B are integrated, and the upper locking body 24
B is separate from these. The upper locking body 24B is cylindrical and has a plurality of rows (4 in this embodiment) from the upper end face.
By cutting the slits 31), four flexible tongue pieces 32 are formed.

At the upper end of the shaft 23B, there is provided a flange 33 which is inserted into the upper locking body 24B while pushing the tongue piece 32 as shown in FIG. When the flange 33 passes through the upper locking body 24B, the tongue piece 32 returns to its original shape, and the flange 33 is locked on the upper surface of the upper locking body 24B. The side peripheral surface of the flange 33 is tapered, and the upper inner surface of the upper locking body 24B is also tapered.

The insertion hole 20B through which the shaft 23B is inserted
Is a circular hole.

The other construction of this embodiment is the same as that of the embodiment shown in FIGS. 1 to 3, and the same reference numerals indicate the same parts.
With the structure of FIGS. 8 to 10, the same operation and effect as those of the structure of FIGS. According to the present embodiment, even if the fixing tool 21B is turned, the fixing tool 21B does not fall out of the insertion hole 20B.

FIG. 11 is a structural view of a differently shaped upper locking body 24C which can be used in the structure of the embodiment shown in FIGS. This upper locking body 24C is also cylindrical, and the slit 3
5, the tongue piece 34 is formed. A step 3 for locking the flange 33 is provided in the middle of the inner hole of the upper locking body 24C.
6 are provided. The lower surface of this step portion 36 is tapered surface 3
6a.

The above embodiment is an example of the present invention, and the present invention can have a configuration other than that shown. For example, in the embodiment shown in FIGS. 1 to 5, the overhang portion 26 is connected to the upper locking members 24 and 24A via the pillar 25, but the overhang portion is directly from the side surface of the upper locking member 24. May be protruded. In addition, fixture 2
A projection-like projection may be provided in place of the projection 27 of the lower locking body 22 of the first, second, and first 21A and 21B. This lower locking body 22
It is clear that the shape of the can be other than circular.
A concave groove with which a tool such as a flathead screwdriver is engaged may be provided on the lower surface of the lower locking body 22. Furthermore, the eighth to tenth
In the illustrated embodiment, the peripheral side surface of the flange 33 and the upper locking body 24
Both upper inner surfaces of B are tapered, but the taper may be provided on at least one of them.

[0039]

According to the ceiling inspection lid fixing structure of the first to third aspects, the locked state of the inspection lid by the fixture can be directly visually confirmed. It also prevents the fixture from rotating in the unlock direction.
Can be stopped and the fixture
You can easily know that it has rotated to an angle.

According to the ceiling inspection lid fixing structure of the second and third aspects, it is possible to prevent the fixing tool from dropping out of the insertion hole and to prevent the fixing tool from being lost when the inspection lid is mounted or re-mounted.

According to the structure of the third aspect , the shaft body can be easily fitted to the upper locking body .

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a ceiling inspection lid fixing structure according to an embodiment.

FIG. 2 is a cross-sectional view taken along a line II-II in FIG.

FIG. 3 is a cross-sectional view showing a state in which a fixing tool 21 is engaged with an insertion hole.

FIG. 4 is an exploded perspective view of a ceiling inspection lid fixing structure according to another embodiment.

FIG. 5 is a cross-sectional view taken along a line VV in FIG. 4;

FIG. 6 is a perspective view of a unit room.

FIG. 7 is a sectional view showing a conventional example.

FIG. 8 is an exploded perspective view of a ceiling inspection lid fixing structure according to still another embodiment.

FIG. 9 is a cross-sectional view taken along a line IX-IX in FIG. 8;

FIG. 10 is a perspective view showing an engagement relationship between an upper locking body and a shaft body in FIG. 8;

11A and 11B are configuration diagrams of an upper locking body 24C, wherein FIG. 11A is a side view, FIG. 11B is a plan view, and FIG. 11C is a view C of FIG.
It is sectional drawing which follows the -C line.

[Explanation of symbols]

 15 Ceiling panel 16 Inspection port 18 Inspection cover 20, 20A, 20B Insertion hole 21, 21A, 21B Fixture 22 Lower locking body 23, 23A, 23B Shaft body 24, 24A, 24B, 24C Upper locking body 26 Overhang Department

Claims (3)

(57) [Claims] 1. A fitting is made from above to an inspection port of a ceiling.
The inspection lid is locked to the edge of the inspection port by a fixture, and
The ceiling inspection lid fixed structure that prevented the inspection lid from rising
The inspection lid is provided with an insertion hole for the fixture near the outer edge.
The fixing device has a shaft inserted through the insertion hole and an upper portion of the shaft.
Side and is locked to the upper surface of the inspection lid around the insertion hole
Inspection of the upper locking body and the ceiling provided below the shaft portion
A lower locking member extending to the lower surface of the edge of the mouth.And The lower locking body is a plate-like body extending along the lower surface of the inspection lid.
And the outer edge of the inspection lid
A projection is provided at the boundary between the
 The ceiling inspection lid fixing structure characterized by that. 2. It is fitted from above into the ceiling inspection port.
The inspection lid is locked to the edge of the inspection port by a fixture, and
The ceiling inspection lid fixed structure that prevented the inspection lid from rising
The inspection lid is provided with an insertion hole for the fixture near the outer edge.
The fixing device includes a shaft inserted through the insertion hole and an upper surface of a ceiling.
Side, the shaft body is fitted, and the insertion hole is
An upper locking body locked to the upper surface of the surrounding inspection lid;
It is provided on the lower side and extends to the lower surface of the edge of the inspection port of the ceiling
With the lower locking bodyAnd The lower locking body is a plate-like body extending along the lower surface of the inspection lid.
And the outer edge of the inspection lid
A projection is provided at the boundary between the
 The ceiling inspection lid fixing structure characterized by that. 3. The method of claim 2, Ri Contact with the flange portion is provided at the upper end of the shaft body, the upper engaging Tometai extends in the vertical direction upper part of the shaft body is penetrated bore The upper locking body has a plurality of slits cut in a downward direction from the upper end surface, and a space between the slits is a flexible tongue. The flange of the shaft has an outer shape capable of passing through the inner hole while elastically expanding and deforming the tongue piece, and the flange is engaged with the upper surface of the upper locking body. A ceiling inspection lid fixing structure characterized by being stopped.