JP3708071B2 - Screw type housing - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention provides, for example, an inner peripheral surface in order to form a space in the upper part of an on-off valve mounting portion so as to operate the on-off valve from the ground in an on-off valve mounting portion attached to a water pipe or a sewer pipe embedded in the ground. An outer cylindrical body having an internal thread portion and an inner cylindrical body having an external thread portion threadedly engaged with the internal thread portion on the outer peripheral surface. By rotating the inner cylindrical body with respect to the outer cylindrical body, the height of the inner cylindrical body is increased. The present invention relates to a threaded casing made of cast iron that is buried in the ground so that the thickness can be adjusted.
[0002]
[Prior art]
As this conventional screw type housing, for example, one disclosed in Japanese Patent Laid-Open No. 9-184146 is known. That is, what is disclosed in the publication is that an outer cylindrical body having a female threaded portion on an inner peripheral surface and an inner cylindrical body having a threaded portion on an outer peripheral surface are screwed together by both screw portions, In a screw-type housing in which a stop member can be engaged from the inside in a groove formed in the female thread to adjust the height at a proper position An opening that penetrates the inner cylinder is formed in the inner cylinder, a distal end protrudes outward from the opening, and a stop member that can be engaged with a groove formed in the female thread of the outer cylinder is disposed on the inner side of the inner cylinder. It is attached.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-184146
[Problems to be solved by the invention]
However, such a screw-type housing is engaged with the groove formed in the female thread portion of the outer cylinder by engaging the tip of the stop member that protrudes from the opening of the inner cylinder, and the height of the inner cylinder is adjusted. Although the inner cylinder is prevented from rotating, the position of the groove formed in the female thread portion of the outer cylinder is hidden by the inner cylinder so that it cannot be confirmed with the eyes. At present, the tip of the stop member is aligned with the groove of the outer cylinder, but there is a problem that it takes time to align the tip of the stop member and the groove of the outer cylinder.
[0005]
The present invention solves such a problem, and an object of the present invention is to provide a screw-type housing that can easily align the distal end portion of the stop member and the groove portion of the outer cylindrical body. .
[0006]
[Means for Solving the Problems]
In order to solve this problem, the present invention relates to an inner cylinder body in which an outer cylinder body having a female thread portion on an inner peripheral surface and an inner cylinder body having a thread portion on an outer peripheral surface are screwed together by both screw portions. In order to adjust the height of the inner cylinder, an opening that penetrates the inside and outside is formed in the inner cylinder, the tip protrudes outward from the opening, and the groove is formed in the female thread of the outer cylinder. A screw-type housing in which a stop member capable of being fitted is rotatably mounted around a horizontal axis inside the inner cylinder, and protrudes inward from the inner surface to the lower end of the groove forming portion of the outer cylinder The gist is that the alignment pieces to be integrated are provided integrally.
[0007]
With this configuration, since the alignment piece protruding inward from the inner surface is integrally provided at the lower end of the groove forming portion of the outer cylindrical body, the alignment of the distal end portion of the stop member and the groove portion of the outer cylindrical body is performed. Can be easily performed, and workability can be improved.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
1 to 8, reference numeral 1 denotes an iron-cast outer cylindrical body having a female threaded portion 2 on the inner peripheral surface from the upper end to the lower end, and 3 denotes a threaded engagement with the female threaded portion 2 of the outer cylindrical body 1. An iron-cast inner cylinder having a threaded portion 4 on the outer peripheral surface at the lower end, and the outer cylinder 1 and the inner cylinder 3 constitute a screw-type housing whose height can be adjusted. A groove portion 5 extending in the axial direction of the outer cylindrical body 1 is formed on the inner peripheral surface of the outer cylindrical body 1 so as to divide the female thread portion 2 at a position equally divided into four in the circumferential direction. In order to stop the rotation of the cylindrical body 3 and adjust the upper end height of the inner cylindrical body 3, an opening 6 penetrating the inside and outside is formed at the location where the male thread portion 4 is provided in the vicinity of the lower end of the inner cylindrical body 3. The top end 7a of the upper end protrudes outward from the opening 6, and a stop member 7 engageable with the groove 5 of the outer cylinder 1 is attached to the inner side of the inner cylinder 3, and the stop member 7 The distal end portion 7a protrudes from the opening 6 and can be engaged with the groove 5 from the inside. More specifically, the stop member 7 is attached to a horizontal shaft 9 supported by a bearing portion 8 provided on the inner surface in the vicinity of the lower end of the inner cylinder 3 so that the intermediate portion in the vertical direction can be freely rotated. Is projected outward from the opening 6 to engage with the groove 5 of the outer cylinder 1.
[0009]
By the way, the alignment piece 10 which protrudes inward at right angles from the inner surface is integrally provided at the lower end of the formation portion of each of the four groove portions 5 of the outer cylindrical body 1.
Reference numeral 11 denotes an iron-cast lid that fits into the upper end opening 3a of the inner cylinder 3 in order to close the upper end opening 3a of the inner cylinder 3, and fits into the upper end opening 3a of the inner cylinder 3. In this state, the top surface is flush with the upper end surface of the inner cylinder 3. An engagement piece 13 that engages with a ring-shaped engagement portion 12 provided inside the upper end of the inner cylinder 3 is rotatably supported by a shaft 14 on the back surface of the lid 11. Thus, the lid 13 can be freely opened and closed between the closed state and the open state with the engaging piece 13 engaged with the ring-shaped engaging portion 12. That is, the lid body 11 is connected to the inner cylinder body 3 so as to be freely opened and closed. When the lid body 11 is closed, the movement of the lid body 11 inside the upper end of the inner cylinder body 3 is engaged with the engagement piece 13 in a ring shape. It can be stopped by engagement with the portion 12.
[0010]
The screw-type casing configured to be height-adjustable by the outer cylinder 1 and the inner cylinder 3 has a mounting portion for an on-off valve (not shown) attached to a water pipe or a sewer pipe embedded in the ground. It is buried in the ground to cover from above. At that time, it is necessary to adjust the height so that the upper end of the inner cylinder 3 is flush with the ground surface. In this case, the tip 7 a of the stop member 7 is moved from the opening 6 to the inside of the inner cylinder 3. The height is adjusted by rotating the inner cylinder 3 in the retracted state, that is, in the unlocked state. When the height is adjusted, the opening 6 needs to overlap with any of the grooves 5. At that time, the position of the groove 5 can be confirmed by the alignment piece 10, and the alignment of the opening 6 and the groove 5 can be confirmed. The tip 7a of the stop member 7 is finally protruded from the opening 6 and the tip 7a is locked in the groove 5 located outside the opening 6.
[0011]
As a result, the inner cylinder 3 is locked to the outer cylinder 1, and the large vehicle is placed on the lid 11 while the upper end opening 3 a of the inner cylinder 3 is closed by the lid 11. Thus, even when a rotating force is applied to the lid body 11, the rotation of the lid body 11 is stopped by the engagement between the engagement piece 13 and the ring-shaped engagement portion 12 of the inner cylinder body 3, and further the inner cylinder body 3 is stopped by the engagement between the end portion 7 a of the stop member 7 and the groove portion 5.
[0012]
【The invention's effect】
As described above, according to the present invention, since the alignment piece protruding inward from the inner surface is integrally provided at the lower end of the groove forming portion of the outer cylinder, the distal end portion of the stop member and the outer cylinder Positioning of the groove part of the body can be easily performed, and workability can be improved.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view of a screw-type housing according to an embodiment of the present invention.
FIG. 2 is a perspective view of an outer cylindrical body of the screw type housing as viewed from above.
FIG. 3 is a perspective view of an outer cylindrical body of the screw type housing as viewed from below.
FIG. 4 is a longitudinal sectional view showing a state when adjusting the height of the inner cylinder relative to the outer cylinder of the screw-type housing.
FIG. 5 is a longitudinal sectional view showing a locked state after adjusting the height of the inner cylindrical body with respect to the outer cylindrical body of the screw type housing;
FIG. 6 is a perspective view of the lock portion viewed from the inside.
FIG. 7 is a plan view showing a locked state after adjusting the height of the inner cylinder relative to the outer cylinder of the screw-type housing.
FIG. 8 is a longitudinal sectional view showing a state where a lid is placed on the upper end of the inner cylinder of the screw type housing.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Female thread part 3 Inner cylinder 3a Opening part 4 Male thread part 5 Groove part 6 Opening part 7 Stopping member 7a Tip part 8 Bearing part 9 Shaft 10 Positioning piece 11 Lid 12 Ring-shaped engagement part 13 Joint 14 axis

Claims (1)

In order to adjust the height of the inner cylinder by screwing together an outer cylinder having a female threaded portion on the inner peripheral surface and an inner cylinder having a threaded portion on the outer peripheral surface, A through hole is formed in the inner cylinder, and a stop member that protrudes outward from the opening and engages with a groove formed in the female thread of the outer cylinder is provided inside the inner cylinder. A screw-type housing that is rotatably mounted around a horizontal axis is integrally provided with an alignment piece that protrudes inwardly from the inner surface at the lower end of the groove forming portion of the outer cylindrical body. A screw-type housing characterized by that.

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