JPH0517956U - Packing for waterproof connector - Google Patents

Abstract

(57) [Summary] [Object] The present invention provides an annular packing for a waterproof connector, in which an engaging projection is easily engaged with an engaging hole of a connector housing. [Structure] A hemispherical head portion 1a is formed on a locking projection 1 provided on one side of an annular packing A in the axial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to the structure of a waterproof connector packing used in a vehicle wire harness or the like.

[0002]

[Prior Art]

In FIG. 5, a is an annular packing made of soft rubber for a waterproof connector, and a plurality of locking protrusions b are integrally provided. The locking projection b has a conical head b ₁ as shown in FIG. 6, and the conical head b ₁ tends to have an axial length L ₁ larger than the diameter L ₂ . In the process of mounting the annular packing a on the connector housing C, when the locking protrusion b is out of the locking hole d (FIG. 7), pushing it by the jig e causes an increase in frictional force, resulting in a conical shape. The head portion b ₁ remains in the connector housing C, and it is necessary to take it out and re-install it (FIG. 8).

[0003]

[Problems to be solved by the device]

 The present invention has been made paying attention to the above points so that the locking projection of the packing can be easily engaged with the locking hole of the connector housing.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, in the present invention, a locking projection having a hemispherical head portion is provided for the packing, and the axial length of the hemispherical head portion is made smaller than its diameter. Characterize.

[0005]

[Action]

 The hemispherical head slides on the wall of the connector housing with a small frictional force.

[0006]

【Example】

In FIG. 1, A is an annular packing for a waterproof connector made of a soft rubber material, and has a locking projection 1 that integrally projects on one side in the axial direction. A hemispherical head 1a is formed at the front end of the locking projection 1, and the axial length L _{1 of the} hemispherical head 1a is smaller than the diameter L ₂ (FIG. 2).

In the process of mounting the annular packing A in the connector housing B, when the locking protrusion 1 is out of the locking hole B ₁ , when it is pushed in by the jig e, the length L ₁ is small and spherical. As a result, the hemispherical head portion 1a having a small frictional force is relatively smoothly engaged with the locking hole B ₁ .

[0008]

[Effect of the device]

 As described above, the present invention is characterized in that the packing is provided with the locking projection having the hemispherical head, and the axial length of the hemispherical head is smaller than its diameter. Therefore, there is an effect that the hemispherical head portion of the locking projection easily engages with the locking hole of the connector housing.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the same locking protrusion.

FIG. 3 is a perspective view showing a state in which the connector housing is mounted.

FIG. 4A is a sectional view showing a mounting process with respect to the connector housing, and FIG. 4B is a sectional view at the time of completion of mounting.

FIG. 5 is a perspective view showing a conventional annular packing.

FIG. 6 is a cross-sectional view of the same locking protrusion.

FIG. 7 is a cross-sectional view showing a mounting process with respect to the above connector housing.

FIG. 8 is a cross-sectional view showing an incompletely mounted state of the above.

[Explanation of symbols]

 A Annular packing 1 Locking protrusion 1a Hemispherical head

Claims (1)

[Scope of utility model registration request] 1. A packing for a waterproof connector, characterized in that a locking projection having a hemispherical head is provided for the packing, and the axial length of the hemispherical head is smaller than its diameter.