JPH0538145Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an opening/closing mechanism for a meter box lid.

[Conventional technology]

The lid of the meter box that houses instruments such as water meters is opened for meter reading and inspection, but in some cases it may be removed from the meter box. Therefore, it is not enough for the meter box lid opening/closing mechanism to simply be able to open and close the lid, but it is also required to have a structure that allows the lid to be attached and removed as necessary.

Conventionally, the opening/closing mechanism for the meter box lid has been to provide a plate-shaped bracket provided at the edge of the opening of the meter box with a notch-like recessed part with a uniform opening width, and to insert the lid into the recessed part. The provided support shaft is removable and the lid is conventionally configured to open and close vertically around the support shaft fitted into the recess.

[The problem that the idea aims to solve]

However, in the past, when opening and closing the lid, the spindle would come out of the recess, causing the lid to unnecessarily come off the meter box, and when the lid was opened and then removed, the lid would close naturally due to its weight. There were many times when I ended up doing something wrong. This resulted in the annoyance of having to put the lid back on after it came off, and the annoyance of having to hold the lid in your hand until the meter reading or inspection was completed.

This idea was made in view of the above circumstances,
Meter boxes that allow the lid to be quickly attached and removed, but which can prevent the lid from unnecessarily coming off when the lid is opened, or prevent the lid from closing naturally even if you release your hand when opening the lid. The purpose of this invention is to provide a mechanism for opening and closing the lid.

[Means to solve the problem]

The meter box lid opening/closing mechanism according to the present invention has the following configuration. In other words, the cross-sectional shape of the support shaft provided on the lid is formed into an elliptical or oblong shape with the long axis facing in the thickness direction of the lid, and the recess provided in the bracket is located between the entrance and exit of the support shaft and the support shaft. a support part, a step is formed between the support part and the entrance, and the opening width of the entrance is set to be the same as or longer than the short axis of the support shaft and shorter than the long axis; The opening width dimension of the step between the entrance and the support part is set to be the same as or longer than the short axis dimension of the above-mentioned support shaft and shorter than the long axis dimension, and the opening width dimension of the support part is set to be the same as the short axis dimension of the above-mentioned support shaft. The length of the supporting portion is set to be equal to or longer than the long axis dimension, and the length of the support portion is set to be longer than the short axis dimension of the support shaft.

[Effect]

In the above configuration, when attaching the lid to the meter box, put the lid upright and place the long axis of the support shaft horizontally, fit the support shaft into the entrance and exit of the recessed groove, and then move the lid toward the open side. With the long axis of the support oblique, drop the support shaft into the stepped part and fit it into the support part. To remove the lid from the meter box, follow the reverse procedure.

When the support shaft is fitted into the support portion, the lid can be opened and closed around the support shaft. Then, when you pull the spindle towards the front of the support and open the lid, the maximum opening angle of the lid will be 90 degrees or more, and when the lid is opened at an angle of 90 degrees or more, the lid will close naturally due to its weight. This will be prevented.

〔Example〕

1 is a plan view of a meter box 2 with a lid 1 attached thereto, the left half of FIG. 2 is a side view thereof, and the right half of the same figure is a longitudinal sectional side view thereof. The lid 1 has a rectangular shape, and has a protrusion 3 at each end of one side thereof.
3 are provided, and support shafts 4, 4 protrude from these protrusions 3, 3, respectively.

As shown in FIG. 3, the support shaft 4 has an elliptical cross-sectional shape (or may be an elliptical shape), and its long axis is in the thickness direction of the lid 1. Note that the direction of the long axis does not necessarily have to be exactly in the thickness direction of the lid 1, but only needs to be oriented in the thickness direction of the lid 1.
l ₁ and l ₂ indicate the length and short axis of the support shaft 1, respectively. In the figure, reference numeral 5 denotes a plate-shaped bracket, which is provided at the edge of the opening of the meter box 2 shown in FIGS. 1 and 2. This bracket 5 has an opening 6 for the support shaft 4 and a support portion 7 for the support shaft 4.
A recessed portion 9 having a notch shape is provided, and a step is formed between the support portion 7 and the entrance/exit 6. The opening width dimension L ₁ of the entrance/exit 6 is set to be the same as or longer than the short axis dimension L ₂ of the support shaft 4 and shorter than the major axis dimension L ₁ , and the width between the entrance/exit 6 and the support part 7 is set to The opening width dimension _L3 of the stepped portion 8 is set to be the same as or longer than the short axis dimension _l2 of the support shaft 4 and shorter than the major axis dimension _l1 , and the opening width dimension _l2 of the support shaft portion 7 is set to The long axis dimension l of the support shaft 4 is set to be the same as or longer than ₁ , and the length dimension H of the support part 7 is
is set longer than the short axis dimension _l2 of the support shaft.

In the above configuration, the lid 1 is connected to the meter box 2.
When installing the lid 1 vertically and the long axis of the support shaft 4 horizontally as shown in Fig. 4a, insert the support shaft 4 into the entrance 6 of the recessed part 9, and then as shown in Fig. 4b. With the lid 1 slightly tilted toward the opening side and the long axis of the support shaft 4 oblique, the support shaft 4 is dropped into the stepped portion 8 and fitted into the support portion 7. Place lid 1 on meter box 2
To remove it from the machine, follow the reverse procedure.

When the support shaft 4 is fitted into the support portion 7 as shown in FIG. 4c, the lid 1 can be opened and closed around the support shaft 4. Then, as shown in Fig. 5, when the support shaft 4 is pulled toward the front side of the support part 7 and the lid 1 is opened, the maximum opening angle A of the lid 1 becomes 90 degrees or more, and the lid 1 closes naturally due to its weight. This will be prevented.

[Effect of idea]

As described above, according to the meter box lid opening/closing mechanism according to the present invention, when opening and closing the lid attached to the meter box, the step prevents the support shaft from coming out of the recessed portion. This prevents a situation where the lid comes off unnecessarily. Nevertheless, when attaching the lid to the meter box, all you have to do is stand the lid up, fit its spindle into the opening of the recess, then tilt the lid slightly and drop the spindle into the support section through the step. Because it is sufficient,
The work of installing the lid is not so complicated as compared to the conventional method, and the lid can be easily removed from the meter box by simply reversing the above procedure. Furthermore, when the lid is attached,
The lid can be opened to an opening angle of 90 degrees or more, thereby preventing the lid from closing automatically due to its weight once opened during meter reading or inspection. Therefore, the trouble of having to put the removed lid back on,
This eliminates the hassle of having to hold the lid in your hand until the meter reading or inspection is complete.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the meter box 2 with the lid 1 attached, the left half of Fig. 2 is a side view thereof, the right half of the same figure is a vertical side view thereof, and Fig. 3 is a side view showing the lid and bracket. Figures 4a to 4c are explanatory diagrams showing the procedure for attaching the lid to the meter box.
The figure is an explanatory view showing the state when the lid is opened to the maximum opening angle. 1... Lid, 2... Meter box, 4... Support shaft, 5... Bracket, 6... Doorway, 7... Support section, 8... Step section, 9... Recessed section, L ₁ ... Doorway Opening width dimension of L ₂ ... Opening width dimension of support part,
L ₃ ... Opening width dimension of the step part, H ... Length dimension of the support part, l ₁ ... Long axis dimension of the support shaft, l ₂ ... Short axis dimension of the support shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] A plate-shaped bracket is provided at the edge of the opening formed in the meter box, and a support shaft provided in the lid is fitted into and removed from a notch-shaped recess provided in this bracket. In a meter box lid opening/closing mechanism in which the lid swings open and close around the support shaft fitted in the recess, the cross-sectional shape of the support shaft is such that the long axis is It is formed in an oval or oval shape facing in the thickness direction of the lid, and
The recessed part has an entrance/exit for the support shaft and a support part for the support shaft, and a step is formed between the support part and the entrance/exit, and the opening width dimension of the entrance/exit is the same as or larger than the short axis dimension of the support shaft. is long and set shorter than the major axis dimension, and the opening width dimension of the step between the entrance and the support part is set to be the same as or longer than the minor axis dimension of the support shaft and shorter than the major axis dimension. , the opening width dimension of the support part is set to be the same as or longer than the long axis dimension of the above-mentioned support shaft, and further, the length dimension of the support part is set to be longer than the short axis dimension of the above-mentioned support shaft. A distinctive feature is the opening/closing mechanism of the meter box lid.