JP2555280Y2 - Pipe end protection cap - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention can be easily fitted into a pipe end protective cap, particularly an open end of a pipe constituting a fence, a gate, and the like, and can be firmly fixed to the pipe. The present invention relates to a pipe end protection cap that can be made.

[0002]

2. Description of the Related Art Conventionally, the following cap is disclosed in Japanese Utility Model Laid-Open No. 57-20418 as a protection cap for a pipe end to be fitted to an opening end of a pipe constituting a fence, a gate and the like. Hereinafter, this conventional cap will be described with reference to the drawings.

FIG. 4 is a sectional view showing a conventional cap A fitted into a pipe.

As shown in FIG. 4, a conventional cap A is a synthetic resin cap body 2 fitted into a pipe 1 and having one or two support legs 3 projecting from the lower surface thereof. A metal leaf spring 4 having a width greater than the inner diameter of the pipe 1 and having elasticity, and forcing the cap body 2 to which the leaf spring 4 is fixed against the elastic force of the leaf spring 4. It fits in purposely.

[0005]

However, the above-mentioned conventional cap has the following problems.

In the conventional cap, the supporting leg 3 of the cap body 2 is sandwiched between the holes of the insertion hole of the leaf spring 4. Therefore, in order to firmly attach the leaf spring 4 to the supporting leg 3, It is necessary to make the inner width of the insertion hole smaller than the width of the support leg 3 and to increase the elastic force of the leaf spring 4. Therefore, a strong force is required to fit the leaf spring 4 into the support leg 3 of the cap body 2.

Since there is no guide for inserting the cap body 2 into the pipe 1, the cap body 2 cannot be smoothly inserted into the pipe 1.

Since the cap body 2 and the inner surface of the pipe 1 are in contact only by the leaf spring 4, when an external force is applied to the cap body 2 after the fitting, the cap body 2 comes off the pipe 1 or the leaf spring 4 May be distorted.

Therefore, an object of the present invention is to be able to smoothly fit into a pipe, firmly fix it to a pipe, and to easily fit a leaf spring into a support leg of a cap body. It is an object of the present invention to provide a protective cap for a pipe end.

[0010]

According to the present invention, there is provided a protective cap for a pipe end comprising a cap body fitted into a pipe and a metal leaf spring fixed to the cap body for preventing the cap body from being pulled out. In the above, the cap body has a head, and a plurality of support legs projecting from a lower surface of an inner peripheral portion of the head and having the locking step portion for the leaf spring formed inside. The circumcircle of the support leg is
The plate spring has the same diameter as the inside diameter of the pipe, and the plate spring has a large-diameter piece having a circumscribed circle larger than the inside diameter of the pipe, and the locking step of the cap body, which opposes the elastic force of the support leg. And a locking claw to be locked.

Next, an embodiment of the pipe end protection cap of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view showing a cap body of a pipe end protection cap according to an embodiment of the present invention.
FIG. 2 is a plan view showing a leaf spring of the pipe end protection cap of one embodiment of the present invention, and FIG. 3 is fitting the pipe end protection cap of one embodiment of the present invention into the upper end opening of the column. FIG. 4 is a cross-sectional view showing a state of being bent.

The pipe end protection cap B shown in FIGS. 1 to 3 includes a cap body 5 fitted into the pipe 1, a metal leaf spring 6 fixed to the cap body 5 for preventing the cap body 5 from being pulled out. Consists of Cap body 5
Is made of synthetic resin or metal.

The cap body 5 has a head 7 having a size enough to close the upper end opening of the pipe 1, and a plurality (three in this example) of cylinders protruding from the lower surface inside the peripheral portion of the head 7. Support leg 8. A locking step 9 for a leaf spring is formed inside the support leg 8. The circumcircle of the support leg 8 is
It has the same diameter as the inner diameter of the pipe 1. This is because the cap body 5 acts as a guide when the cap body 5 is fitted into the pipe 1 as described later. The support leg 8 is formed with a reinforcing rib 10 in the axial direction. The lower end of the support leg 8 is formed in a tapered shape. This is for facilitating the fitting of the cap body 5 into the pipe 1.

The leaf spring 6 includes a plurality of (three in this example) large-diameter pieces 11 having a circumscribed circle slightly larger than the inner diameter of the pipe 1.
And a locking claw 12 formed between the large-diameter pieces 11.
The locking claw 12 has a circumscribed circle slightly larger than the inscribed circle of the support leg 8. Therefore, the locking claw 12 is locked to the locking step 9 of the cap body 5 against the elastic force of the support leg 8.

In order to fix the leaf spring 6 to the cap body 5, the locking claw 12 of the leaf spring 6 is pushed down to the locking step 9 of the support leg 8. Since the circumscribed circle of the locking claw 12 is slightly larger than the inscribed circle of the support leg 8, the leaf spring 6 pushes the support leg 8 outward.
Since the support leg 8 has elasticity, it deforms outward. Therefore, the leaf spring 6 can be fixed to the cap body 5 with a small force. For this reason, the support leg 8 is hardly flawed.

In order to fit the cap body 5 to which the leaf spring 6 has been fixed as described above into the pipe 1, the support legs 8 of the cap body 5 may be inserted in accordance with the opening at the end of the pipe 1. At this time, the support leg 8 is deformed outward due to the insertion of the leaf spring 6, but since the lower end of the support leg 8 is formed in a tapered shape, there is no hindrance to the insertion. Support leg 8
Is pressed into the pipe 1, the support legs 8 deformed outward.
Is forcibly returned to the original state.
The reference numeral 12 firmly meshes with the locking step 9 of the support leg 8. Thereby, the cap body 5 is firmly fitted into the end opening of the pipe 1.

On the other hand, when an upward pulling force acts on the cap body 5, the tip of the large-diameter piece 11 of the leaf spring 6 deformed upward due to the insertion of the cap body 5 into the pipe 1 is attached to the inner surface of the pipe 1. Since the cap body 5 is strongly caught, the cap body 5 does not come off.

[0019]

As described above, according to the protective cap for the pipe end of the present invention, it can be smoothly fitted into the pipe, and can be firmly fixed to the pipe. Useful effects are provided such that the spring can be easily fitted into the support leg of the cap body.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a cap body of a pipe end protection cap according to an embodiment of the present invention.

FIG. 2 is a plan view showing a leaf spring of the pipe end protection cap according to one embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state where the pipe end protection cap according to one embodiment of the present invention is fitted into the upper end opening of the support.

FIG. 4 is a cross-sectional view showing a state where a conventional pipe end protection cap is fitted into an upper end opening of a column.

[Explanation of symbols]

 1: pipe, 5: cap body, 6: leaf spring, 7: head, 8: support leg, 9: locking step, 10: reinforcing rib, 11: large diameter piece, 12: locking claw.

Claims (1)

(57) [Scope of request for utility model registration] 1. A pipe end protection cap comprising: a cap body fitted into a pipe; and a metal leaf spring for preventing the cap body from being pulled out, the cap body being fixed to the cap body. And a plurality of support legs, which are provided on the inner peripheral lower surface of the peripheral portion of the head and in which the locking step portion for the leaf spring is formed inside, and a circumscribed circle of the support leg is , The same diameter as the inner diameter of the pipe, the leaf spring,
A large-diameter piece having a circumscribed circle larger than the inner diameter of the pipe,
A cap for a pipe end portion, comprising: a locking claw that is locked against an elastic force of the support leg on the locking step portion of the cap body.