JPH0575357U - Protective cap for pipe end - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a pipe end protection cap that can be easily fitted into an open end of a pipe and can be firmly fixed to the pipe. [Structure] Cap body 5 fitted in pipe 1
And a leaf spring 6 fixed to the cap body 5.
The cap body 5 has a plurality of support legs 8.
The circumscribed circle of the support leg 8 has the same diameter as the inner diameter of the pipe 1, and the leaf spring 6 has a large-diameter piece 11 having a circumscribed circle larger than the inner diameter of the pipe 1 and the elastic force of the support leg 8 on the cap body 5. And a locking claw 12 that is locked against it.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention is a pipe end protection cap, in particular, a pipe end protection cap that can be easily fitted into the open end of a pipe constituting a fence, a gate, or the like, and that can be firmly fixed to the pipe. It is about.

[0002]

[Prior Art]

 Conventionally, the following cap is disclosed in Japanese Utility Model Laid-Open No. 57-20418 as a pipe end protection cap that is fitted into the open end of a pipe that constitutes a fence, a gate, or the like. Hereinafter, this conventional cap will be described with reference to the drawings.

FIG. 4 is a cross-sectional view showing a conventional cap A fitted in a pipe.

As shown in FIG. 4, the conventional cap A is a synthetic resin cap main body 2 fitted into the pipe 1 and having one or two supporting legs 3 protruding from the lower surface thereof, and the supporting leg 3 It consists of a metal plate spring 4 having a width larger than the inner diameter of the pipe 1 and having an elastic force, which is firmly fitted to the cap body 2 to which the plate spring 4 is fixed and is forced against the elastic force of the plate spring 4. It is something that fits in.

[0005]

[Problems to be solved by the device]

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

In the conventional cap, the support leg 3 of the cap body 2 is sandwiched between the hole edges of the insertion holes of the leaf spring 4, so that the leaf spring 4 and the support leg 3 can be firmly attached to each other. It is necessary to make the inner width of the insertion hole narrower than the width of the support leg 3 so as 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 with each other only by the leaf spring 4, when an external force is applied to the cap body 2 after the fitting, the cap body 2 is disengaged from the pipe 1 or The spring 4 may be distorted.

Therefore, the object of the present invention is to be able to be fitted smoothly in the pipe, but only to be firmly fixed to the pipe, and moreover, the leaf spring can be fitted easily to the supporting leg of the cap body. The purpose is to provide a protective cap for the end of the pipe.

[0010]

[Means for Solving the Problems]

 This invention is a protective cap for a pipe end, which comprises a cap body fitted in a pipe, and a metal plate spring for preventing the cap body from being pulled out, which is fixed to the cap body. And a plurality of support legs projectingly provided on the lower surface on the inner side of the peripheral portion of the head portion and having the leaf spring engaging step portion formed therein, and the circumscribed circle of the support leg is , A large-diameter piece having the same diameter as the inner diameter of the pipe and having a circumscribing circle larger than the inner diameter of the pipe, and the elastic step of the support leg on the locking step of the cap body. It is characterized in that it has a locking claw that is locked against.

Next, an embodiment of a protective cap for pipe ends according to the present invention will be described with reference to the drawings.

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

The pipe end protection cap B shown in FIGS. 1 to 3 includes a cap body 5 fitted in the pipe 1 and a metal leaf spring 6 fixed to the cap body 5 for preventing the cap body 5 from being pulled out. It consists of The cap body 5 is made of synthetic resin or metal.

The cap body 5 has a head portion 7 having a size that closes the upper end opening of the pipe 1 and a plurality of cylindrical members (three in this example) protruding from the inner surface of the peripheral portion of the head portion 7. Support legs 8 and. Inside the supporting leg 8, a leaf spring locking step 9 is formed. The circumscribed circle of the support leg 8 has the same diameter as the inner diameter of the pipe 1. This is to act as a guide when the cap body 5 is fitted into the pipe 1, as will be described later. Reinforcing ribs 10 are formed on the support legs 8 in the axial direction thereof. 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 circumscribing circles slightly larger than the inner diameter of the pipe 1, and locking claws 12 formed between the large-diameter pieces 11. have. 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.

To fix the leaf spring 6 to the cap body 5, the locking claw 12 of the leaf spring 6 is pushed 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, but since the support leg 8 has elasticity, It transforms in one direction. Therefore, the leaf spring 6 can be fixed to the cap body 5 with a weak force. Therefore, the support leg 8 is unlikely to be flawed.

In order to fit the cap main body 5 to which the leaf spring 6 is fixed in this way into the pipe 1, the support leg 8 of the cap main body 5 may be inserted in alignment with the end opening of the pipe 1. At this time, the support leg 8 is deformed outward by the insertion of the leaf spring 6, but since the lower end of the support leg 8 is formed in a tapered shape, the insertion is not hindered. When the support leg 8 is press-fitted into the pipe 1, the support leg 8 deformed outward is forcibly returned to its original state, so that the locking claw 12 of the leaf spring 6 is locked by the locking step of the support leg 8. Firmly meshes with the part 9. As a result, the cap body 5 is firmly fitted in the end opening of the pipe 1.

On the other hand, when an upward pulling force is applied to the cap body 5, the tip of the large-diameter piece 11 of the leaf spring 6 that is deformed upward due to the insertion of the cap body 5 into the pipe 1 causes the inner surface of the pipe 1 to move. The cap body 5 does not come out because it is strongly caught by.

[0019]

[Effect of the device]

 As described above, according to the pipe end protection cap of the present invention, the pipe end can be smoothly fitted into the pipe and can be firmly fixed to the pipe. It has a useful effect that it can be easily fitted into the supporting leg of the.

[Brief description of 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 in the pipe end protection cap according to the embodiment of the present invention.

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

FIG. 4 is a cross-sectional view showing a state in which 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)

[Scope of utility model registration request] 1. A pipe end protection cap comprising a cap body fitted in a pipe and a metal plate spring for preventing the cap body from being pulled out, which is fixed to the cap body, wherein the cap body is a head. And a plurality of support legs projectingly provided on the lower inner surface of the peripheral portion of the head portion and having the leaf spring locking step formed inside, and the circumscribed circle of the support legs 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 protective cap for pipe ends, wherein the locking step portion of the cap body has a locking claw that is locked against the elastic force of the support leg.