TWM453545U - Structure for tube expander - Google Patents

Description

Expander structure

This creation relates to a pipe expander, especially a pipe expander structure that can be lightweight.

As shown in FIG. 4, the conventional expander includes a body 91 and a screw 92. The body 91 and the screw 92 are made of iron. The body 911 of the body 91 has a guiding slot 912 and a neck 913. There is a through hole 914 through the guide groove 912. The body 91 has a female thread portion 915 at the top end of the neck portion 913 in the through hole 914. A bearing 93 is disposed in the through hole 914 under the internal thread portion 915, and the screw 92 is screwed on the internal thread portion. 915, a handle 921 is exposed outside the body 91, and an eccentrically disposed conical head 922 is disposed in the body 91. The screw 92 is rotated by driving the handle 921, and the conical head 922 can expand the tube by eccentricity. tube. However, the conventional pipe expander has a body 91 and a screw 92 which are made of iron. Although it has good structural strength, it must be hand-held during operation, so that it is easy to handle acid in operation due to heavy weight. Therefore, how to reduce the overall weight is the main focus of this creation.

The main purpose of this creation is to solve the above problems and provide a structure of the expander, which can make the expander as a whole lightweight.

For the purposes of the foregoing, this creative department includes:

a body, made of aluminum, having a body and a neck at the top end of the body, the body having a channel into which the clip of the clamped tube member is placed, the neck having a perforation longitudinally communicating with the guide groove;

a ring body made of iron or a metal having a hardness thereon, and fixed to the top end of the neck in the perforation, the ring system being hollow and having an internal thread portion;

a bearing fixed in the perforation below the ring body;

a screw having an external threaded portion and screwed into the inner threaded portion of the ring body and extending into the body, the screw having a handle at the exposed end of the body body and having an eccentrically disposed taper at one end of the body head.

The above and other objects and advantages of the present invention will become more apparent from the detailed description and the accompanying drawings.

Of course, the present invention is allowed to differ in some of the parts, or the arrangement of the parts, but the selected embodiments are described in detail in the present specification, and the construction thereof is shown in the drawings.

(customized part)

91‧‧‧ Body 911‧‧‧ Body

912‧‧‧Guide 913‧‧‧ neck

914‧‧‧Perforated 915‧‧‧ internal thread

92‧‧‧ Screw 921‧‧‧ handle

922‧‧‧Conical head 93‧‧‧ bearing

(this part of the creation)

1‧‧‧ Body 11‧‧‧ Body

12‧‧‧ neck 13‧‧

14‧‧‧Perforated 2‧‧‧ ring body

21‧‧‧ Internal thread 3‧‧‧ bearing

4‧‧‧ screw 41‧‧‧ external thread

42‧‧‧Handle 43‧‧‧ Conical head

5‧‧‧ Pipe fittings

The first picture shows the three-dimensional appearance of the expander and the clamp of the present invention.

Figure 2 is an exploded configuration diagram of the expander of this creation.

Figure 3 is a cross-sectional view of the creation and operation.

Figure 4 is a cross-sectional view of a conventional expander.

Please refer to Fig. 1 to Fig. 3, which shows the structure of the embodiment selected for the present invention, which is for illustrative purposes only and is not limited by the structure in the patent application.

The embodiment provides a structure of a pipe expander, as shown in Figures 1 to 2, comprising a body 1, a ring body 2, a bearing 3 and a screw 4, wherein:

The body 1 shown in FIGS. 1 to 2 is made of aluminum (in the present embodiment, pure aluminum or aluminum alloy), and has a body portion 11 and a neck portion 12, and the neck portion 12 is located. The top end of the body portion 11 has a guide groove 13 having a through hole 14 that longitudinally communicates with the guide groove 13.

The ring body 2 as shown in FIGS. 2 to 3 is made of an iron material (or a metal having a hardness above the iron material, such as a steel material) in the present embodiment, and is fixed to the neck in the through hole 14. At the top end of 12, the ring body 2 is hollow and has an internal thread portion 21. As shown in FIGS. 2 to 3, the bearing 3 is also disposed in the through hole 14 and is fixed in the through hole 14 below the ring body 2.

As shown in the second to third figures, the screw 4 has an externally threaded portion 41. The externally threaded portion 41 is screwed into the internal threaded portion 21 of the ring body 2 and extends into the body 1. The screw 4 is exposed outside the body 1. One end of the body 1 has a handle 42 and a conical head 43 at one end of the body 1 is disposed eccentrically with respect to the screw 4.

As shown in FIGS. 1 and 3, when the expander of the present embodiment is operated, the pipe member 5 is clamped by the clamp block 6, and the clamp block 6 is placed in the guide groove 13 of the body portion 11, so that The tapered head 43 is aligned with the tubular member 5, and the handle 42 can be pulled to expand the end of the tubular member 5.

From the above description, it is not difficult to find that the advantage of the present invention is that, in the same structure of the expander, the material of the body 1 of the present invention is made of aluminum, and the strength of the screw 4 and the body 1 is reinforced by the ring body 2, Compared with the material of the body 91 and the screw 92 of the conventional expander, the weight of the expander of the present invention can undoubtedly achieve the weight reduction effect.

The above description of the embodiments is intended to be illustrative of the present invention and is not intended to limit the scope of the present invention.

From the above detailed description, it will be apparent to those skilled in the art that the present invention can achieve the aforementioned objectives, and has been in compliance with the provisions of the Patent Law, and has filed a patent application.

1‧‧‧ Ontology

11‧‧‧ Body

12‧‧‧ neck

13‧‧‧ Guide slot

14‧‧‧Perforation

2‧‧‧Act

21‧‧‧Threaded Department

3‧‧‧ Bearing

4‧‧‧ screw

41‧‧‧External thread

42‧‧‧handle

43‧‧‧Conical head

Claims (3)

A structure of a pipe expander, comprising:
a body, made of aluminum, having a body and a neck at the top end of the body, the body having a channel into which the clip of the clamped tube member is placed, the neck having a perforation longitudinally communicating with the guide groove;
a ring body made of iron or a metal having a hardness thereon, and fixed to the top end of the neck in the perforation, the ring system being hollow and having an internal thread portion;
a bearing fixed in the perforation below the ring body;
a screw having an external threaded portion and screwed into the inner threaded portion of the ring body and extending into the body, the screw having a handle at the exposed end of the body body and having an eccentrically disposed taper at one end of the body head. The structure of the expander according to the first aspect of the patent application, wherein the material of the body is one of pure aluminum and aluminum alloy. The structure of the expander according to the first aspect of the patent application, wherein the material of the ring body is steel.