JPS6235715Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Field of industrial application) The present invention relates to a lid mounting structure for a water meter box.

(Prior Art) A conventional lid mounting structure for a water meter box will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the case 1 is provided with support shafts 3, 3 protruding inwardly from both side walls 2, 2, and on both side walls 5, 5 of the lid body 4, as shown in FIG. As shown in the figure, shaft insertion parts 6, 6 are opened on the lower surface, and shaft engagement holes 7, 7 are formed at positions moved forward by communicating with these shaft insertion parts 6, 6. Engaging pieces 8, 8 protrude. When engaging the lid body 4, the shaft insertion portion 6 is fitted from above the support shaft 3, the support shaft 3 is moved to the engagement hole 7, and the engagement piece 8
It is constructed so that it cannot escape due to Furthermore, in the middle of the lid body 4, a projection 37 coaxial with the support shaft 3 formed on the support piece 9 protruding from the end surface of the box body 1 forms a recess 38 formed on the back surface of the lid body 4 (FIG. 2). The cover 4 is fitted to support the back surface of the lid 4.

(Problems to be solved by the invention) In the configuration of the conventional water meter as described above, for example, when the buoyancy of water is applied to the lid 4 when water comes out, the lid 4
There is a risk that the support shaft 3 may be lifted and the support shaft 3 may escape from the shaft insertion port 6. Further, if the heel of a high heel or the like touches the hatched position of the lid 4 in FIG. 1 (in the direction of the arrow in FIG. 3), there is a risk that the lid 4 will rotate in the opening direction. This is because the axis 0-0 is moving away from the edge 10 of the lid 4 in order to move the support shaft 3 from the insertion port 6 to the engagement hole 7 position. Furthermore, many water meter boxes are made of vinyl chloride resin, but when exposed to sunlight for a long time, both ends of the lid 4 in the longitudinal direction bulge due to heat, causing the opening of the box 1 to bulge. There is a drawback that the lid body 4 cannot be opened because it is higher than the edge. Furthermore, the engagement hole 7
There was a problem in that the cover body 4 was deformed by solar heat and the engagement with the support shaft 3 became incomplete, further promoting warping of the cover body 4.

In view of the above-mentioned problems, the purpose of this invention is to
The amount of water that the lid will not open accidentally even if the shaded area in the diagram is pressed, that the lid will not float up when water comes out, and that it will not expand and deform due to solar heat. It is an attempt to provide a container.

[Structure of the idea]

(Means for solving the problem) The present invention provides a bearing piece that protrudes inward from near the upper end of one end wall of the box body through a small gap from both side walls,
An engaging portion is provided protruding from the upper ends of the both side walls toward the gap, and a peripheral surface parallel to the axial direction is provided from the lower surface of the lid body to be fitted into the upper opening of the box body to one end edge of the lid body. protrudingly provide a supporting shaft portion in contact with the supporting shaft portion, the supporting shaft portion is supported by the bearing piece, and an engaging projection protrudes from the end face toward the gap below the engaging portion;
A notched step portion is formed on the circumferential surface of the engaging protrusion to engage with an engaging recess formed on the lower surface of the engaging portion.

(Function) The engagement protrusion protruding from the support shaft of the lid is engaged with the lower surface of the engagement portion protruding from the box body, preventing the lid from floating, and further preventing the lid from floating around the support shaft of the lid. is provided parallel to the axial direction and in contact with one end edge of the lid body, and the axis of the support shaft portion is brought as close to the edge as possible to prevent the lid body from failing when a pressing force is applied near the edge of the lid body. Since the support shaft is supported on the bearing piece and pressed from the upper surface by the engaging portion of the box body, it will not be expanded and deformed by solar heat.

(Example) An example of the present invention will be described with reference to FIGS. 4 to 10.

11 is the box body, which is made of acrylonitrile butadiene styrene copolymer resin and has front and rear end walls 1;
2, 12 and left and right side walls 13, 13, it is formed into a rectangular tube shape. Top opening 3 of one end wall 12
Both side walls 1 from a position slightly below the opening edge 14 of 5
A pair of bearing pieces 16, 16 are protruded inwardly through a small gap 15, 15 from the inner surfaces of 3, 13, and the inner ends of the bearing pieces 16, 16 are slightly curved upward and protrude. Portions 17, 17 are formed. (As shown in FIG. 5, the bearing pieces 16, 16 have grooves 36,
36 to provide elasticity) Further, between the bearing pieces 16, 16, an intermediate bearing piece 18 is provided to protrude inward from the end wall 12, and between the bearing pieces 16, 16 and the intermediate bearing piece 18, the end wall They are integrally connected by a reinforcing piece 19 that protrudes from 12 and has a downwardly inclined tip. Furthermore, a series of engaging edges 20 are provided on the other end wall 12 and both side walls 13, 13 of the box body 11 to protrude inward at approximately the same height as the bearing piece 16, and the engagement edges 20 are provided on the other end wall 12 and both side walls 13, 13, and project inwardly at substantially the same height as the bearing piece 16. Insertion gaps 21, 21 are left between the tip of the piece 17. Furthermore, the box body 11
The bearing piece 16,
16 and the engaging portion 2 integrally toward the gap 15, 15.
2, 22 are provided in a protruding manner, one end of the engaging pieces 22, 22 is formed integrally with the upper end of one end wall 12, and the other end is connected to the engaging edge 20 via a downwardly bent step portion 23, 23. Guide edges 24, 24 are connected to the end portions and are formed on the lower surfaces of the engaging portions 22, 22 by rising upwardly along the back surfaces of the step portions 23, 23 and curved toward the bearing pieces 16, 16 side. The inner ends of the guide edges 24, 24 are deeply notched upward to form engagement recesses 25, 25.

Reference numeral 26 denotes a lid, which is made of glass fiber-reinforced polyester resin and has an opening 3 on the top surface of the box body 11.
It is a plate-shaped body that is fitted into the box body 5, and notches 27, 27, into which the engaging portions 22 of the box body 11 are respectively fitted, are formed on both side edges of one end.
Support shaft portions 29 are provided at both ends of the lower surface so that the circumferential axial direction is on the same plane as the edge 28 where 7 and 27 are formed at both ends.
29 are integrally formed, a coaxial intermediate shaft portion 30 is formed between the support shaft portions 29, 29, and the support shaft portions 29,
29, the intermediate shaft portion 30 is attached to the bearing piece 1 of the box body 11
6, 16 are supported on intermediate bearing pieces 18, and their peripheral surfaces are inscribed in the end wall 12 of the box body 11, and are connected in series by reinforcing pieces 31 in the axial direction. Further, engagement protrusions 32, 32 are provided protruding from the end faces of the support shafts 29, 29 toward the gaps 15, 15 between the side walls 13, 13, and the respective engagement protrusions 3
Cutout step portions 33, 33 are formed on the circumferential surfaces of 2, 32 to be engaged with the engagement recesses 25, 25 of the engagement portions 22, 22 of the box body 11 when the lid body 26 is closed. The other three edges 34 of the lid 26 are fitted onto the engaging edges 20 of the box body 11, and are configured so that the top surface of the lid 26 and the opening edge 14 of the box body 11 are on the same plane. There is.

In addition, in Figure 7, Distance between protruding piece 17 and guide edge 24 ;A Height of engagement protrusion 32 ; B Distance between bearing piece 16 and engagement recess 25 ;C Width of engagement protrusion 32 ;D Then, A>B C>D D>A It is becoming.

Next, the operation of the above embodiment will be explained.

First, when the lid body 26 is to be engaged with the box body 11, the lid body 26 is vertically inserted into the box body 11 as shown by the chain line in FIG.
1, insert the engaging protrusions 32 at both ends below the engaging parts 22, 22 from the insertion gaps 21, 21 in front of the bearing pieces 16, 16, and then When the lid 26 is pulled up until the engaging protrusions 32, 32 come into contact with the guide edges 24, 24 on the lower surfaces of the engaging parts 22, 22, and the lid 26 is moved in parallel toward the end wall 12 in this state, The supporting shaft portions 29, 29 and the intermediate shaft portion 30 of the lid body 26 are supported on the bearing pieces 16, 16 and the intermediate bearing piece 18, respectively, as shown by the chain lines in FIG. The above operation is performed while keeping the lid 26 in a substantially vertical position. Next, while folding the lid 26 onto the box body 11,
When the lid body 26 is fitted onto the engagement edge 20 of the box body 11, the top surface of the lid body 26 becomes flush with the opening edge 14 of the box body 11, and the outer peripheral surfaces of the support shafts 29, 29 and the intermediate shaft 30 When approaching the end wall 12 of the main body 11, the notch steps 33, 33 of the engaging protrusions 32 at both ends engage with the engaging recesses 25, 25 on the lower surface of the engaging parts 22, 22 of the box main body 11, and the lid closes. The notches 27, 27 of the body 26 form the box body 1.
The lid body 26 is engaged with the box body 11 as shown by the chain line in FIG.

Next, when opening the lid 26, when the lid 26 is pulled up using the support shafts 29, 29 as fulcrums, the support shafts 29,
Bearing pieces 16, 16 each having a cylindrical surface 29 with a curved tip
The planar outer circumferential surfaces of the support shaft parts 29, 29 and the intermediate shaft part 30 are rotated and raised by the bearing pieces 16, 16,
It is supported on the intermediate bearing piece 18 and maintained in an open state.

Furthermore, if the lid body 26 tries to float up when water comes out, the engaging protrusions 32, 32 of the lid body 26
1, and the notch steps 33, 33 are engaged with the engagement recesses 25, 25, so the lid body 26 is pushed up from below (water due to the buoyancy of the engaging protrusion 3
2 and 32 do not move within the engagement parts 22 and 22, and the engagement protrusions 32 and 32 are inserted into the insertion gaps 21 and 21.
The lid body 26 will not come off from the box body 11 by escaping from the box body 11.

Furthermore, since the peripheral surfaces of the support shafts 29, 29 of the lid body 26 are inscribed in the end wall 12 of the box body 11, the axis of rotation thereof is located close to the end wall 12 of the box body 11, Therefore, even if the edge 28 of the lid 26 is stepped on with a high heel in the direction of the arrow in FIG. 10, there is no danger that the lid 26 will open.

Also, if the lid body 26 is exposed to solar heat for a long time,
The supporting shafts 29, 29 at both ends of the lid body 26 are supported from below by the bearing pieces 16, 16 of the box body 11, and the engaging protrusions 32, 32 protruding from the end surfaces of the supporting shafts 29, 29 are supported from the top surface. The engaging portion 22 of the box body 11,
22, it is difficult to deform due to thermal expansion, and since the intermediate shaft portion 30 is supported by the intermediate bearing piece 18, the central portion does not bulge downward. Therefore, the lid body 26 will not be deformed due to thermal expansion and will not be able to be opened.

[Effect of idea]

According to the present invention, a bearing piece is provided inwardly protruding from near the upper end of one end wall of the box body, and a support shaft portion is formed on the bearing piece on the lower surface of one end edge of the lid body so that the axial direction is parallel to this edge. and an engaging protrusion protruding from the end face of the support shaft, an engaging protrusion protruding from the upper end of the box body into the gap between the box body and the bearing piece. Since the lid protrudes downward, the support shaft of the lid is supported on the bearing piece, and the engaging protrusion of the bearing piece is located below the engaging part of the case body, so the lid floats up when water comes out. If the engagement protrusion becomes loose, the engagement protrusion engages with the engagement part to prevent the lid from floating and separating from the box body, and furthermore, the engagement protrusion engages with the engagement part to prevent the lid from floating and separating from the box body. By engaging the notch step portion of the mating projection, movement of the lid body is prevented, and the effect of preventing separation from the box body is further ensured. In addition, since the circumferential surface of the support shaft of the lid is in contact with the end wall of the box body parallel to the axial direction, the support points will approach even if the edge of the lid is pushed from the top surface. Because of this, there is no risk of it rotating unexpectedly. Furthermore, the end edge of the lid body has a support shaft formed at both ends supported on a bearing piece, and engaging protrusions protruding from both ends of the support shaft are pressed from the top surface by the engagement parts of the box body. Because of this, it is difficult to expand and deform due to solar heat, and the lid will not become unable to open due to deformation.

[Brief explanation of the drawing]

1 to 3 are explanatory diagrams of a conventional water metering box, FIG. 4 is an exploded perspective view of a water metering box showing an embodiment of the present invention, and FIG. 5 is a plan view of the main body of the same box. 6th
The figure is a longitudinal sectional side view of the same as the above, Fig. 7 is a longitudinal sectional side view of a part of the same as the above, Fig. 8 is a back view of the same as the upper cover body, Fig. 9 is a side view of the same as the above, and Fig. 10 is taken along the line X-X of Fig. 8. It is an enlarged sectional view. DESCRIPTION OF SYMBOLS 11... Box body, 12... End wall, 13... Side wall, 15... Gap, 16... Bearing piece, 22... Engaging portion, 25... Engaging recess, 26... Lid body, 28 …
...End edge, 29...Spindle portion, 32...Engagement protrusion, 3
3...Notch step.

Claims (1)

[Scope of utility model registration request] A bearing piece is provided protruding inward from near the upper end of one end wall of the box body through a small gap with both side walls, and an engaging portion is provided protruding from the upper end of the both side walls toward the gap, A support shaft portion whose peripheral surface is in contact with the axial direction is provided on one end edge of the lid body to protrude from the lower surface of the lid body to be fitted into the top opening, and this support shaft portion is supported by the bearing piece. At the same time, an engaging protrusion projects downward from the end face of the engaging part toward the gap, and a notched step portion on the circumferential surface of the engaging protrusion engages with an engaging recess formed on the lower surface of the engaging part. A water metering box characterized by having the following shapes: