EXPLOSION-PROOF HITTING BALL AND TRAINING DEVICE INCLUDING THE SAME

Abstract

An explosion-proof hitting ball and a training device including the same are provided, wherein the explosion-proof hitting ball includes: a tubular member made of plastic material and including an outer wall; and a ball member made of explosion-proof material and including a tubular wall and a ball wall, the tubular wall and the ball wall being transverse and connected to each other to form a chamber, the tubular wall being disposed around the tubular member and integrally connected to the outer wall by melting-connection.

Claims

1. An explosion-proof hitting ball including: a tubular member made of plastic material and including an outer wall; and a ball member made of explosion-proof material and including a tubular wall and a ball wall, the tubular wall and the ball wall being transverse and connected to each other to form a chamber, the tubular wall being disposed around the tubular member and integrally connected to the outer wall by melting-connection.

2. The explosion-proof hitting ball of claim 1, wherein the tubular member is harder than the ball member.

3. The explosion-proof hitting ball of claim 1, wherein the tubular member has a wall thickness larger than a wall thickness of the tubular wall.

4. The explosion-proof hitting ball of claim 1, wherein the sum of a wall thickness of the tubular member and a wall thickness of the tubular wall is defined as a first dimension, a wall thickness of the ball wall is defined as a second dimension, and the first dimension is larger than the second dimension.

5. The explosion-proof hitting ball of claim 1, wherein the ball member and the tubular member are made of different materials, and the tubular wall and the outer wall are made of different materials and integrally connected to each other by melting-connection.

6. The explosion-proof hitting ball of claim 1, further including a metal tube, wherein the tubular member is disposed around the metal tube.

7. The explosion-proof hitting ball of claim 2, wherein the explosion-proof hitting ball further includes a metal tube, and the tubular member is disposed around the metal tube; the tubular member has a wall thickness larger than a wall thickness of the tubular wall; the sum of a wall thickness of the tubular member and a wall thickness of the tubular wall is defined as a first dimension, a wall thickness of the ball wall is defined as a second dimension, and the first dimension is larger than the second dimension; the ball member and the tubular member are made of different materials, and the tubular wall and the outer wall are made of different materials and integrally connected to each other by melting-connection; the tubular member is protrusive beyond the ball member; the ball member is made of polyvinyl chloride (PVC) or polypropylene (PP); the ratio of the first dimension to the second dimension ranges from 1.1 to 2.0; the explosion-proof hitting ball further includes a valve member, and the valve member is disposed on the ball member and controllably in communication with the chamber and an outside of the ball member.

8. A training device including the explosion-proof hitting ball of claim 1, further including: a base; and a connection rod assembly connected to the base and the explosion-proof hitting ball.

9. The training device of claim 8, wherein the connection rod assembly includes a main portion, a blocking portion, a plug and a fixation assembly, the main portion defines an axial direction and a radial direction, the blocking portion projects in the radial direction on a side of the main portion remote from the base, the explosion-proof hitting ball is disposed around the main portion about the axial direction and abutted against the blocking portion, the plug is positioned in an opening of the main portion remote from the base, and the fixation assembly is connected to the plug and blocks the explosion-proof hitting ball in the axial direction.

10. The training device of claim 9, wherein the ball wall of the explosion-proof hitting ball includes a receiving hole, the receiving hole has a diametric dimension larger than an inner diametric dimension of the tubular wall, the plug includes a threaded hole disposed therethrough, the threaded hole is in communication with an interior of the main portion and the receiving hole, the fixation assembly includes a screw and a washer, the washer is received within the receiving hole and abutted against an end of the tubular wall, the screw is disposed through the washer and screwed to the threaded hole.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0009] FIG. 1 is a stereogram of an exemplary embodiment of the present invention;

[0010] FIG. 2 is a breakdown drawing of an exemplary embodiment of the present invention;

[0011] FIG. 3 is a partial enlargement of an exemplary embodiment of the present invention;

[0012] FIG. 4 is a cross-sectional view of FIG. 3;

[0013] FIG. 5 is a partial enlargement of FIG. 4; and

[0014] FIG. 6 is a stereogram of a screw of an exemplary embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Please refer to FIGS. 1 to 6 for an exemplary embodiment of the present invention. An explosion-proof hitting ball of the present invention includes a tubular member 1 and a ball member 2.

[0016] The tubular member 1 is made of plastic material and includes an outer wall 11. The ball member 2 is made of explosion-proof material, the ball member 2 includes a tubular wall 21 and a ball wall 22, the tubular wall 21 and the ball wall 22 are transverse and connected to each other to form a chamber 24, and the tubular wall 21 is disposed around the tubular member 1 and integrally connected to the outer wall 11 by melting-connection. Preferably, the ball member 2 is made of polymer, such as polyvinyl chloride (PVC) or polypropylene (PP), the ball member 2 and the tubular member 1 are made of different materials, and the tubular wall 21 and the outer wall 11 are made of different materials and integrally connected to each other by melting-connection so that they are strongly connected to each other.

[0017] Preferably, the tubular member 1 is harder than the ball member 2. As such, when the tubular member 1 is disposed around an object, the harder tubular member 1 is not easy to damage and provides a strong support for supporting the ball member 2.

[0018] The tubular member 1 has a wall thickness larger than a wall thickness of the tubular wall 21 so that the tubular member 1 is durable and not easy to break. In this embodiment, the sum of a wall thickness of the tubular member 1 and a wall thickness of the tubular wall 21 is defined as a first dimension, a wall thickness of the ball wall 22 is defined as a second dimension, and the first dimension is larger than the second dimension. For example, the ratio of the first dimension and the second dimension ranges from 1.1 to 2.0.

[0019] Preferably, the tubular member 1 is protrusive beyond the ball member 2. When the explosion-proof hitting ball is disposed around a rod body, the tubular member 1 will contact a stop element first. When the explosion-proof hitting ball rotates relative to the rod body, the friction will concentrate on the harder tubular member 1, which can effectively maintain the structural integrity of the ball member 2 and service life.

[0020] The explosion-proof hitting ball further includes a metal tube 3, and the tubular member 1 is disposed around the metal tube 3, wherein the metal tube 3 has properties of low friction and good durability so that the explosion-proof hitting ball can smoothly move along the rod body. When the explosion-proof hitting ball is disposed around a rod body having low friction for hitting training, the explosion-proof hitting ball can smoothly rotate about the rod body to eliminate the impact force. Since the tubular member 1 made of plastic material has a relatively large frictional resistance than the metal tube 3, the tubular member 1 can rotate with the metal tube 3.

[0021] The explosion-proof hitting ball further includes a valve member 25, and the valve member 25 is disposed on the ball member 2 and controllably in communication with the chamber 24 and an outside of the ball member 2. As such, the user can inflate or deflate the ball member 2 to obtain a required air pressure in the chamber 24 according to various requirements, which can control the hardness of the ball member 2.

[0022] The invention further provides a training device. The training device includes the explosion-proof hitting ball, a base 4 and a connection rod assembly 5. The connection rod assembly 5 is connected to the base 4 and the explosion-proof hitting ball.

[0023] The connection rod assembly 5 includes a main portion 51, a blocking portion 52, a plug 53 and a fixation assembly 55. The main portion 51 is preferably retractable and defines an axial direction 61 and a radial direction 62. The blocking portion 52 projects in the radial direction 62 on a side of the main portion 51 remote from the base 4, the explosion-proof hitting ball is disposed around the main portion 51 about the axial direction 61 and abutted against the blocking portion 52. In this embodiment, the blocking portion 52 is abutted against the tubular member 1, the plug 53 is positioned in an opening of the main portion 51 remote from the base 4, and the fixation assembly 55 is connected to the plug 53 and blocks the explosion-proof hitting ball in the axial direction 61 so that the explosion-proof hitting ball cannot disengage form the main portion 51 during hitting training.

[0024] The ball wall 22 of the explosion-proof hitting ball includes a receiving hole 23, the receiving hole 23 has a diametric dimension larger than an inner diametric dimension of the tubular wall 21, the plug 53 includes a threaded hole 54 disposed therethrough, the threaded hole 54 is in communication with an interior of the main portion 51 and the receiving hole 23, the fixation assembly 55 includes a screw 56 and a washer 57, the washer 57 is received within the receiving hole 23 and abutted against an end of the tubular wall 21, and the screw 56 is disposed through the washer 57 and screwed to the threaded hole 54. Preferably, a side surface of the screw 56 facing the washer 57 includes a plurality of toothed portions 561, and the plurality of toothed portions 561 urge the washer 57 to effectively avoid disengagement of the screw 56.

[0025] Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not to be limited except as by the appended claims.