Fixation Structure of Sleeve Tool

Abstract

A fixation structure of a sleeve tool is provided and includes a universal joint and a universal socket. The universal joint has a surface and a universal joint hole thereunder. The universal joint hole holds therein a spring and a ball. The universal joint has a radial length including a distance by which the ball protrudes from the surface. The universal socket has a connection hole for receiving and engaging with the universal joint and has an inner side. A recess is disposed under the inner side of the universal socket. The connection hole has a hole diameter. The ratio of the radial length to the hole diameter is greater than 0.902 to prevent the ball from retracting completely into the recess even when a user pulls the universal joint 20 by hand, thereby preventing the universal joint from escaping from the connection hole of the universal socket.

Claims

1. A fixation structure of a sleeve tool, comprising: a universal joint having a surface and having a universal joint hole under the surface, the universal joint hole holding therein a spring and a ball, wherein the universal joint has a radial length which includes a distance by which the ball protrudes from the surface; and a universal socket having a connection hole adapted to receive and engage with the universal joint and having an inner side, wherein a recess is disposed under the inner side of the universal socket, the connection hole having a hole diameter, and a ratio of the radial length to the hole diameter is greater than 0.902.

2. The fixation structure of a sleeve tool according to claim 1, wherein the hole diameter is defined as a distance between two opposing inner sides in the connection hole.

3. The fixation structure of a sleeve tool according to claim 1, wherein a recess is disposed under the inner side and adapted to engage with the ball and fix the ball in place.

4. The fixation structure of a sleeve tool according to claim 1, wherein the ratio of the radial length to the hole diameter ranges from 0.902 to 1.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0017] FIG. 1 (PRIOR ART) is a perspective view of a sleeve tool capable of bending.

[0018] FIG. 2 (PRIOR ART) is a cross-sectional view of the assembled sleeve tool capable of bending.

[0019] FIG. 3 (PRIOR ART) is a cross-sectional view, taken from another view angle, of the assembled sleeve tool capable of bending.

[0020] FIG. 4 is a cross-sectional view of a preferred embodiment of the present disclosure.

[0021] FIG. 5 is a cross-sectional view of a preferred embodiment of the present disclosure from another view angle.

DETAILED DESCRIPTION OF THE INVENTION

[0022] Referring to FIG. 4 and FIG. 5, the present disclosure provides a fixation structure of a sleeve tool, which essentially comprises a universal joint 20 and a universal socket 30.

[0023] The universal joint 20 is substantially cubic in shape. The universal joint 20 has a surface 21 and has a universal joint hole 22 under the surface 21. The universal joint hole 22 holds therein a spring 23 and a ball 24. The spring 23 has one end abutting against the bottom side of the universal joint hole 22. The spring 23 has the other end abutting against the ball 24 to push the ball 24, such that the ball 24 protrudes from the surface 21. The universal joint 20 has a radial length 25 which includes a distance by which the ball 24 protrudes from the surface 21. In this embodiment, the depth of the universal joint hole 22 which holds therein the spring 23 and the ball 24 is relatively reduced, such that the ball 24 is pushed by the spring 23 and thus protrudes further from the surface 21, thereby increasing the radial length 25.

[0024] A connection hole 31 is disposed under the end side of the universal socket 30 and adapted to receive and engage with the universal joint 20. The universal socket 30 has an inner side 32 which surrounds the connection hole 31. A hole diameter 33 is defined as the distance between two opposing inner sides 32 in the connection hole 31. The ratio of the radial length 25 to the hole diameter 33 is greater than 0.902, such that the universal joint 20 cannot escape from the connection hole 31 of the universal socket 30. A recess 34 is disposed under each inner side 32 and adapted to engage with the ball 24 and thereby fix the ball 24 in place.

[0025] In this embodiment, the hole diameter 33 is 6.54 mm, whereas the radial length 25 is 5.9 mm. The ratio (X) of the radial length 25 to the hole diameter 33 is calculated as follows:

radial length 5.9 mm: hole diameter 6.54 mm=5.9/6.54=0.90214

[0026] Therefore, the ratio (X) of the radial length 25 to the hole diameter 33 is 0.90214. Since the ratio of the radial length 25 to the hole diameter 33 is greater than the 0.902, the universal joint 20 cannot be mounted in place in the connection hole 31 of the universal socket 30 by hand but must be pressed into the connection hole 31 of the universal socket 30 with a hydraulic machine or pressing machine. After being fitted to each other with the hydraulic machine or pressing machine, the universal joint 20 and the universal socket 30 cannot be separated by hand. Therefore, the present disclosure is effective in ensuring that the universal joint 20 and the universal socket 30 cannot be separated by hand.

[0027] Furthermore, the ratio of the radial length 25 to the hole diameter 33 must be less than 1; thus, the ratio of the radial length 25 to the hole diameter 33 must range from 0.902 to 1 in order to ensure that the universal joint 20 and the universal socket 30 cannot be separated by hand.

[0028] In the second embodiment, the radial length 25 of the connection hole 31 is reduced, such that the ratio of the radial length 25 to the hole diameter 33 is greater than 0.902.

[0029] The structural features and connections thereof in a preferred embodiment of the present disclosure are described above. The usage and achievable advantages of the present disclosure are described below.

[0030] Referring to FIG. 5, the universal joint 20 is mounted in place in the connection hole 31 of the universal socket 30 with the hydraulic machine or pressing machine, such that the ball 24 is engaged with and fixed to the recess 34. The spring 23 abuts against the ball 24, so as to fix the universal joint 20 and the universal socket 30 in place.

[0031] Since the ratio of the radial length 25 to the hole diameter 33 is greater than 0.902, a user pulls the universal joint 20 by hand to enable the ball 24 to protrude further from the surface 21 of the universal joint 20 but not to retract completely into the recess 34, and thus the universal joint 20 is prevented from escaping from the connection hole 31 of the universal socket 30.