JPH07118240B2 - Instrument lid opening and closing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for opening and closing an operation lid portion such as a water heater using gas, kerosene, or the like as a heat source.

2. Description of the Related Art Generally, water heaters and the like that use gas or kerosene as a heat source have come to be installed beside the entrance of general households or pipe shafts of condominiums as appliances become smaller. When installed on the side of the entrance or on the pipe shaft of a condominium, in order to prevent general passers-by from easily turning off the power switch of the equipment by mischief, conventionally, as shown in Fig. 11, the exterior front plate 23
The operation lid 24 is provided on the, and the operation lid 24 is fixed by the screw 25. FIG. 12 is a detailed view of a conventional operation lid portion, in which a part of the exterior front plate 23 is end-faced by punching inward.
Up and down so that 26 fits into the bent square hole 27,
A back plate 28 whose left and right sides are bent in a substantially shape is fixed to the front plate of the exterior by spot welding or the like and then painted. Back plate
An elongated hole 29 that penetrates vertically is provided on the left side of 28, and the operation lid 24 is connected to the elongated hole 29 of the back plate through a pin 30. The operation lid 24 can be opened and closed around the pin 30 as shown by the arrow in FIG. The power lamp 31 and the combustion lamp 32 are
This is for checking whether the equipment is operating normally by pressing the power switch 33 during the trial run, but it is not necessary except during the trial run (check with the lamps provided on the remote control installed in the kitchen etc. It is often the case that the operation lid is not opened and checked.) After the trial run, it was fixed to the screw hole 34 of the back plate 28 with the screw 25. FIG. 13 is a detailed view of the screw portion of the conventional operation lid.The operation lid 24 is fixed by a screw 25 and a speed nut 35 which are knurled to facilitate rotation and can be loosened even if the screw 25 is loosened. The screw 25 does not fall by itself.

The problem to be solved by the invention However, at first glance, such a screw fastening configuration is obvious that the operation lid 24 can be opened by loosening the screw.
In many cases, a child or a drunk person was mischievous, opened the operation lid even when the machine was in use, and turned off the power switch without permission.

Furthermore, from a design perspective, the image that you receive is the machine itself, no matter how you consider the design of the screw.
I couldn't get out of my blunt image.

The present invention solves such a conventional problem, and provides an opening / closing device for an operation lid which is not opened by tampering and which is neat in design.

Means for Solving the Problems The present invention comprises an openable / closable operation lid for covering an operation portion of an instrument, and an operation lid lever for slidingly exposing and covering an opening / closing handle portion of the operation lid. The lever has a retaining portion formed at an end portion for engaging with a sliding hole of a device and a relief taper portion on the side opposite to the retaining portion.

Action When it is necessary to open the operation cover by trial operation etc. by the above means, first raise the operation cover lever to expose the tapered part of the operation cover lever so that a finger or a nail can be inserted between the operation cover lever and the operation cover. When a gap is created and you put your finger or nail in this gap to open the operation lid, and when you want to keep it closed to prevent tampering, lower the operation lid lever to lower the operation lid and the operation lid lever. Are substantially coplanar and the clearance between the operation lid and the operation lid lever is reduced. It should be noted that the operation lid lever has a retaining portion at the lower end portion that engages with the sliding hole of the instrument, and a taper portion for escape is formed on the side opposite to this retaining portion, so it is easy to insert and It is designed to prevent slipping out.

Embodiment Hereinafter, an operation lid of one embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 1, an operation lid 2 is provided on the exterior front plate 1a of the instrument 1, and an operation lid lever 3 that slides up and down is arranged on the right side of the operation lid 2.

FIG. 2 is an exploded view of the operation lid portion 1b, which is vertically and horizontally mounted so as to be fitted to the outside of the square hole portion 5 in which the end face 4 is bent by punching inward at a part of the exterior front plate 1a. The back plate 6 bent into a substantially letter shape is spot-welded to the exterior front plate 1a and then painted. On the left side of the back plate 6, there is an elongated hole 7 penetrating vertically, and the operation lid 2 is connected to the elongated hole 7 of the back plate 6 via a pin 8 formed in a substantially letter shape. The operation lid 2 can be opened and closed around the pin 8 as indicated by the arrow.

The power lamp 9 and the combustion lamp 10 are for confirming whether or not the equipment is operating normally by pressing the power switch 11 at the time of trial operation, but it is not necessary except during the trial operation (remote control installed in the kitchen etc. Since it is often confirmed by the lamps provided in, and the operation lid is not opened one by one, it is preferable to prevent the operation lid from being tampered with after the trial run to prevent tampering.

Although the power lamp 9 and the combustion lamp 10 have elongated holes 12, a transparent cover (not shown) is attached to the lamp to make it easier to see and to prevent rainwater from entering.

A claw 13 is spot-welded to the back side of the operation lid 2, and when the operation lid 2 is closed, the claw 13 engages with the elongated hole 14 provided in the back plate 6 as shown in FIG. It has become.

On the right side of the back plate 6, sliding holes 15 and 16 are formed on the upper and lower sides.

When the operation lid lever 3 is inserted through the slide hole 15 and then passes through the slide hole 16, the retaining portion 18 of the operation lid lever 3 is caught and cannot be pulled out. On the right side of the operation lid 2, there is an opening and closing handhold portion 2a, and the operation lid lever 3 is inserted into the front side of the opening and closing handhold portion 2a.

FIG. 4 shows a front view of the operation lid lever 3.

The top portion 19 of the operation lid lever 3 has a T-shaped portion having a dimension B larger than the lateral width A of the sliding hole 15 of the back plate 6, and below the T-shaped portion is the lateral width of the sliding hole 15. Width C slightly smaller than A
Has a width of, and extends. Reference numeral 20 denotes an operation portion provided with a corrugated cross-section for easy operation when the operation lid lever 3 is slid up and down. (Of course, it is not necessary. If it is not necessary, it will be less noticeable.) 21 is a tapered portion that is thin on the left side and that allows a finger or a nail to easily enter when opening the operation lid 2. The cross section XY of FIG. 4 is shown in FIG.

FIG. 6 shows a sectional view at the time of inserting the operation lid lever 3 into the back plate 6. The upper section of the operation lid lever 3 is molded with a dimension F slightly smaller than the depth D of the sliding hole 15 of the back plate 6, and the operation lid lever 3 is dimensioned G slightly smaller than the depth E of the sliding hole 16. The lower cross section of is molded. The operation lid lever 3 has a retaining portion 18 at the bottom, an F taper portion 18a on the back side, an I taper portion 18b on the front side, and the thickness J of the retaining portion 18 is equal to that of the sliding hole 16. It is smaller than the depth E. Of course, the height K from the rear surface of the operation lid lever 3 to the top of the retaining portion 18 is larger than the sliding hole E, and by making the operation lid lever 3 with resin (for example, PBT),
When the stopper portion 18 is inserted, it bends easily so that it can be inserted easily. As shown in FIG. 4, the retaining portions 18 are provided at two places on the left and right,
The width is narrower toward the bottom, making it easier to insert.

FIG. 7 is a left side view of the operation lid lever 3, showing a taper portion.
It shows that part 21 is thin.

FIG. 8 shows a state in which the operation lid 2 is closed and the operation lid lever 3 is also lowered. The portion of the operation lid lever 3 having a thickness of F is exposed, so if the clearance 22 between the operation lid 2 and the operation lid lever 3 is made small, the operation lid 2 can be opened with a finger or a nail. Is difficult.

In FIG. 9, the operation lid lever 3 is raised (the operation lid lever 3
The lower step portion of the operation lever 3 is in contact with the sliding hole 16), and the taper portion 21 of the operation lever 3 is exposed, so that the clearance 22 between the operation lid 2 and the operation lid lever 3 becomes large, so This shows that the claw can be hooked on the handle portion 2a of the operation lid 2 to facilitate opening.

In FIG. 10, the operation lid lever 3 is raised and the operation lid 2 is
Shows the open state diagram.

EFFECTS OF THE INVENTION As described above, in the operation lid portion of the present invention, the finger or the nail is inserted into the tapered portion of the operation lid lever and the clearance between the operation lid lever generated by sliding the operation lid lever, and the operation lid is opened. ,
On the other hand, when closing the operation lid to prevent tampering,
The claw on the back side of the operation lid fits into the long hole of the back plate and enters the locked state, and by sliding the operation lid lever, the clearance between the operation lid and the operation lid lever is reduced, and the operation lid is opened. The operation cover lever has a clearance preventing part for engaging a sliding hole of a device and a relief taper on the opposite side to the clearance, so that a clearance for inserting a finger or a nail is eliminated. Therefore, it has the following effects.

After sliding the operation cover lever, insert your finger or nail into the taper part of the operation cover lever and the clearance of the operation cover to open the operation cover. Therefore, it is possible to surely prevent mischief.

The retaining portion of the operation lid lever is easy to enter when the operation lid lever is inserted, and the retaining portion is surely retained.

Since the retaining portion of the operation lid lever is not configured to fit into the sliding hole, if the operator releases the operation lid lever, the operation lid lever will drop with a stone and the operation lid lever will not be caught in the middle.

[Brief description of drawings]

FIG. 1 is an external view of an embodiment of the present invention, FIG. 2 is an exploded view of an operation lid portion of the present invention, FIG. 3 is a partial sectional view of the operation lid, and FIG. 4 is a front view of the operation lid lever. 5 and 5 are sectional views of the XY plane of FIG. 4, FIG. 6 is a sectional view of the operation lid lever portion, FIG. 7 is a left side view of the operation lid lever, and FIG. 8 is the operation lid. FIG. 9 is a state diagram when the operation lid lever is raised, FIG. 10 is a state diagram in which the operation lid lever is raised and the operation lid is opened, and FIG. 11 is an external view of a conventional example, FIG. 12 is an exploded view of a conventional operation lid portion, and FIG. 13 is a sectional view of the conventional operation lid portion. 1 ... Instrument, 2 ... Operation lid, 3 ... Operation lid lever, 16 ...
… Sliding hole, 17 …… Opening and closing claw part, 18 …… Detachment prevention part, 18a…
… Tapered part.

Claims (1)

[Claims] 1. An openable / closable operation lid for covering an operation portion of an instrument,
The operation lid lever is provided with an operation lid lever that exposes and covers the opening / closing handle of the operation lid by sliding, and the operation lid lever has an end portion with a retaining portion that engages with the sliding hole of the device and a side opposite to the retaining portion. A device lid opening / closing device that has a relief taper.