JPS5849316Y2 - inspection door - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an inspection port that is attached to a ceiling, a wall, etc., and is used for later inspection and repair of electrical wiring and various types of piping arranged on the back side thereof.

In general, an inspection port installed on a ceiling or wall has an inner frame pivoted inside a rectangular outer frame so that it can be opened and closed freely.When installing this inspection port on the ceiling, for example, it is necessary to install the ceiling plate in advance. It is installed within the inner frame and suspended from the ceiling.

Therefore, since the work of attaching the ceiling plate to the inner frame is mainly done on-site, it is desirable that the structure of the inner frame be such that the work of attaching the ceiling plate is easy.

However, since conventional inspection ports are equipped with a locking device to keep the inner frame closed relative to the outer frame, it is necessary to make holes or notches in the ceiling board, and the inner frame As well as making the work of installing ceiling panels more complicated,
This made the inspection port look bad.

This invention provides an inspection port equipped with a locking device that eliminates the need to provide holes, cutouts, etc. in the ceiling plate in order to eliminate the drawbacks of the conventional inspection port.

Embodiments of this invention will be described below based on the accompanying drawings.

Figure 1 shows the entire inspection port of the first embodiment.
An inspection port is shown in which an inner frame 2 is pivotally attached to an outer frame 1 formed in a rectangular shape with hinge pins 8 so as to be openable and closable.

As shown in FIGS. 2 and 3, a mounting frame 9 formed approximately in the shape of a torii gate is attached to the main edge 3 of the inner frame 2 on the front end side of the swing, as shown in FIGS. 2 and 3. There is.

The mounting frame 9 is mounted so as to be located on a plane substantially parallel to the main edge 3, and a mounting portion 10 of the mounting frame 9 is shown enlarged in FIGS. 4 and 5. An actuating lever 4 having protrusions 11 projecting from both ends thereof is pivotably mounted at its center so that the actuating lever 4 rotates in a plane substantially parallel to the main edge 3. It has become.

A guide part 12 is formed on the upper part of the mounting frame 9, and extends in a straight line from side to side in the longitudinal direction of the main edge 3.A lock bar 5 is attached to the left and right guide parts 12 between the main edge 3 and the main edge. It is slidably held between the part 3 and the part 3.

A long arm 13 is suspended from the starting end of one lock par 5, and a short arm 14 is suspended from the starting end of the other lock par 5.
Long and short arms 13 and 14 are formed with elongated holes 15, respectively, and projections 11 protruding from both ends of the operating lever 4 are loosely fitted into these elongated holes 15. are doing.

Further, an operating section 6 is integrally formed at the tip of the long arm 13, and this operating section 6 projects downward beyond the base 16 of the mounting frame 9.

In this embodiment, the mounting frame 9 is provided with a mounting portion 17 for mounting the mounting frame 9 on the main edge 3 of the inner frame 2.

Also, a pair of locking pars 5 extending left and right along the longitudinal direction of the main edge 3 of the inner frame 2 are provided with guides formed on the inner frame corner fittings 18 of the inner frame 2, as shown in FIGS. 2 and 6. 19, and is adapted to be able to engage and disengage from a bar receiving portion 7 provided on an outer frame corner fitting 20 of the outer frame 1.

Therefore, in the lock device used in the inspection port of this embodiment, when the operating portion 6 is slid in the direction of the arrow 21 in the locked state shown in FIG. 4, the operating lever 4 is rotated clockwise. The left and right lockers 5 slide toward each other, and their terminal ends are separated from the bar receivers 7 of the outer frame corner fittings 20, allowing the inner frame 2 to open relative to the outer frame 1. .

On the other hand, in order to close the inner frame 2 and lock the locking device, as shown in FIG. As they rotate, the lockers 5 slide away from each other, and their terminal ends are guided by the guides 19 of the inner frame corner fittings 18 and engage with the bar receivers 7 of the outer frame corner fittings 20, and the inner frame 2 is maintained in a closed state with respect to the outer frame 1.

Therefore, according to the inspection port of this embodiment, the actuating lever 4 attached to the main edge 3 via the mounting frame 9 is attached to the main edge 3.
The locking lever 5 pivoted on both ends of the operating lever 4 engages and disengages the bar receiving portion 7 of the outer frame 1, so that the front end of the inner frame 2 rotates. Both inner and outer frames 1
, 2, the locking device can be disposed outside the main edge 3 of the inner frame 2 without increasing the distance between them.

Therefore, it is not necessary to provide holes, notches, etc. during the installation work for the plate bodies 23 such as ceiling boards and wall boards to be installed within the inner frame 2, making the work extremely easy.

That is, when making holes, notches, etc. in the plate 23 such as a ceiling plate or wall plate installed in the inner frame 2, the surface of the plate 23 will be exposed on the surface of the ceiling or wall. It is necessary to give it a beautiful appearance, which requires various kinds of detailed manual work, but this invention eliminates the need for such detailed manual work.

Furthermore, since the inspection port of this embodiment is one in which a locking device is attached to the outside of the main edge 3 of the inner frame 2, it is not limited to a frame type, but may be a joint type.

Further, according to this embodiment, by making the lock par 5 from a thin plate material such as a steel plate, the thickness of the mounting frame 9 can be made as thin as possible, and the operating part 6 of the locking device is integrated into one lock par 5. Because of this, when operating the locking device by operating the operating portion 6, the locking device operates reliably.Furthermore, when this inspection port is viewed from the front side, the operating portion 6 of the locking device is located inside the inner frame 2. Since it is located along the lower edge, it does not spoil the appearance of the inspection port.

Next, FIG. 7 shows a second embodiment of the inspection port of this invention, which has a different smell from the first embodiment. It is directly pivotally connected to the main edge 3 so that it can rotate in a plane substantially parallel to the main edge 3, and the projections 11 protruding from both ends of the actuating rail μ4 extend along the longitudinal direction of the main edge 3. The starting ends of a pair of lock pars 5 extending from one to the other are pivotally connected, and a long arm 13 is suspended from the starting end of one of the lock pars 5.

The operating portion 6 formed at the lower end of the long arm 13 passes through a through hole 25 formed in the flange portion 24 of the inner frame 2 and projects below the lower end edge of the inner frame 2.

Therefore, in the inspection port of this second embodiment, as in the case of the first embodiment, the plate body 23 such as the ceiling plate or wall plate
The plate body 23 can be attached to the inner frame 2 without creating holes or notches in the inner frame 2.
protrudes below the flange portion 24 of the flange portion 24 .
Since it slides from side to side along the line, it does not spoil the appearance of the inspection port.

As described above, this invention allows holes and notches to be created in the ceiling plate and other panels installed inside the inner frame at the inspection port installation site by providing a locking device close to the main edge on the front end of the inner frame. This eliminates the need to provide other equipment, making the installation work easier.

Further, the operating lever 4 and the locking member 5 are connected to the long and short arms 13.
Since they are connected via the elongated hole 15 provided in 14,
The lock par 5 can slide in a straight line, and can be smoothly engaged and disengaged from the bar receiving part 7.

Furthermore, a long arm 13 hanging from one lock par 5
Since the tip of the inner frame 2 is the operating part 6, the height of the protrusion from the lower edge of the inner frame 2 does not change depending on the sliding position of the operating part 6, and the operating feeling can be improved.

[Brief explanation of drawings]

FIG. 1 is a plan view of an inspection port according to the first embodiment of this invention, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a sectional view taken along the line ■-■ in FIG. FIG. 4 is an explanatory diagram showing the main parts of the locking device shown in FIG. 3 when the lock bar is engaged with the bar receiving portion, and FIG. 5 is an explanatory diagram showing the main parts of the locking device shown in FIG. 3 is an explanatory diagram showing the main parts of the locking device, FIG. 6 is a sectional view taken along the line V[-Vl in FIG. 2, and FIG. 7 is a sectional view showing the main parts of the inspection port according to the second embodiment. be. 1... Outer frame, 2... Inner frame, 3... Main edge sound doctor 4.
...Operating lever 5...Lock bar 6...Operation section,
7... Bar holder, 11... Protrusion, 13... Long arm, 14... Round arm, 15... Long hole.

Claims (1)

[Scope of utility model registration request] An inner frame is pivotally attached to an outer frame formed in a rectangular shape so as to be openable and closable, and the terminal ends of two lock bars move in opposite directions in a plane substantially parallel to the main edge on the front end side of the inner frame. into the inspection opening which is adapted to engage and disengage from the bar holder provided in the outer frame,
A long arm is suspended from the starting end of one lock bar in a cursive shape in plan view, and a short arm is suspended from the starting end of the other lock bar, and a long arm is formed along the longitudinal direction of the short arm and the long arm. A protrusion protruding from both ends of an actuation lever whose central portion is pivotally attached to the main edge of the inner frame on the front end of rotation is loosely fitted into the hole, and the long arm is connected to the lower edge of the inner frame. An inspection port characterized by projecting downward and having its tip as an operating part.