JPH0625665U - Seal packing - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a seal packing that reduces frictional resistance with a connected body and improves slidability. [Structure] Embossing is applied to the outer peripheral surface or the inner peripheral surface where the annular seal packing 6 is in pressure contact with the connected body (cleaning tube 4). [Effect] A cleaning lid or the like having a seal packing can be easily inserted or externally inserted into the connected body.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a seal packing used for ensuring water-tightness by being interposed at a connecting portion of a pipe or the like.

[0002]

[Prior art]

 Generally, when connecting both synthetic resin pipes, one end of one synthetic resin pipe should be provided with an enlarged diameter receiving port, and an annular groove provided on the inner peripheral surface of the receiving port should be fitted with a seal packing before being inserted into the receiving port. The other end of the synthetic resin pipe is inserted and connected.

[0003]

[Problems to be solved by the device]

 However, since the surface of the conventional seal packing is smooth like a mirror surface, when the end of the other synthetic resin pipe is inserted into the receiving port where the seal packing is installed, the inner circumference of the seal packing is There was a case where the surface and the outer peripheral surface of the pipe were elastically adhered to each other and the pipe end could not be inserted all the way into the receiving port.

The present invention has solved the above problems, and provides a seal packing that reduces frictional resistance with a connected body and improves slidability.

[0005]

[Means for Solving the Problems]

 The seal packing of the present invention is characterized in that the outer peripheral surface or the inner peripheral surface that is in pressure contact with the connected body is embossed.

[0006]

[Action]

 Since the outer peripheral surface or the inner peripheral surface of the seal packing that is in pressure contact with the connected body is embossed, the frictional resistance with the connected body is reduced and the slidability is improved.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a vertical sectional view of a sewer pipe showing an embodiment using the seal packing of the present invention, and FIG. 2 is a sectional view showing an essential part of the present invention. In the figure, 1 is a small container made of vinyl chloride resin or the like, and receiving ports 12 and 13 are provided on opposite side walls of the small container 1. The drainage inflow pipe 2 is inserted and connected to the one receiving port 12, and the drainage outflow pipe 3 is inserted and connected to the other receiving port 13.

A receiving port 11 is provided in the upper portion of the small-sized container 1, and the lower end of the cleaning tube 4 is inserted and connected to the receiving port 11. On the other hand, a cleaning lid 5 is attached to the upper end of the cleaning pipe 4, and the cleaning lid 5 prevents the discharge of odor from the sewer pipe and the inflow of rainwater into the sewer pipe. The cleaning lid 5 has a cylindrical body 52 protruding from the lower surface of the lid main body 51, and a seal packing 6 is provided between the collar 53 provided on the outer peripheral surface of the cylindrical body 52 and the outer peripheral lower surface 54 of the lid main body 51. It is installed.

The seal packing 6 is made of an elastic material such as rubber, and an annular protrusion 61 having an arcuate cross section is provided on the outer peripheral side thereof, and the surface of the annular protrusion 61 is embossed. This embossing is to reduce the frictional resistance between the annular protrusion 61 and the inner peripheral surface of the cleaning tube 4, and it is important to form a fine uneven surface that does not impair the watertightness. . On the other hand, a recess 62 is provided on the inner peripheral side of the seal packing 6, and the compressive deformation of the annular projection 61 can be absorbed by the recess 62. Further, annular protrusions 63 having an arcuate cross section are provided on both sides of the recess 62, and the pair of annular protrusions 63, 63 elastically presses the outer peripheral surface of the cylindrical body 52 of the cleaning lid 5 to seal the seal packing 6. It prevents the rotation of.

When the seal packing 6 is attached to the cleaning lid 5 and fitted into the upper end of the cleaning tube 4, the outer diameter of the seal packing 6 is reduced to press the annular protrusion 61 against the inner peripheral surface of the cleaning tube 4. Monkey Therefore, when the cleaning lid 5 is pushed down, the annular protrusion 61 is elastically pressed against the inner peripheral surface of the cleaning tube 4 and smoothly slides, so that the cleaning lid 5 can be easily pushed. At this time, since the pair of annular projections 63, 63 provided on the inner peripheral side of the seal packing 6 elastically presses the outer peripheral surface of the cylindrical body 53 to prevent the seal packing 6 from rotating, the seal packing 6 is prevented from rotating. 6 is not twisted.

In the above embodiment, the case where the outer peripheral surface of the seal packing is pressed against and slides on the inner peripheral surface of the connected body (cleaning tube) has been described, but the inner peripheral surface of the seal packing is connected to the connected body. When sliding with pressure contact, the inner surface of the seal packing may be embossed. When the inner and outer peripheral surfaces of the seal packing are pressed against and slide on the connected body, both the inner and outer peripheral surfaces of the seal packing may be embossed. Furthermore, the seal packing is not limited to the above-mentioned shape, but may have an appropriate shape.

[0012]

[Effect of device]

 As described in detail above, in the present invention, the outer peripheral surface or the inner peripheral surface of the seal packing is embossed to reduce the frictional resistance with the connected object. It can be easily inserted or extrapolated to the inner part of the connection body.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a sewer pipe showing an embodiment using the seal packing of the present invention.

FIG. 2 is a sectional view showing an essential part of the present invention.

[Explanation of symbols]

 1 Small container 2 Drainage inflow pipe 3 Drainage outflow pipe 4 Cleaning pipe 5 Cleaning lid 6 Seal packing

Claims (1)

[Scope of utility model registration request] 1. A ring-shaped seal packing made of an elastic material such as rubber, wherein an outer peripheral surface or an inner peripheral surface which is in pressure contact with a connected body is embossed.