Double-walled bat structure

Abstract

This invention relates to a double-walled baseball bat structure comprising: an outer tube having a hitting section and a tapered section with a gradually narrowing outer diameter; an inner tube integrally formed from carbon fiber material, with a grip section at one end, a connecting section with a gradually widening outer diameter at one end of the grip section, and a through section with a uniform outer diameter at one end of the connecting section, the through section having an annular boss such that the outer diameter of the annular boss is larger than the outer diameter of the through section of the inner tube; and an elastic material disposed on the upper part of the inner tube, on one side of the annular boss.

Description

Technical Field

[0001] This invention relates to baseball bats, and in particular to a double-sleeved baseball bat structure that can reduce volume. Prior Technology

[0002] To improve hitting ability, there are various bat structures on the market, each offering different functional requirements. For example, as revealed in US7014580, US8632428, or US10220277, these previous cases each disclose different structural designs and improve different functions. Summary of the Invention

[0003] The main objective of this invention is to provide a double-walled bat structure that can improve control of the shot and reduce noise.

[0004] To achieve the aforementioned main objectives, the double-walled baseball bat structure of the present invention comprises: an outer tube having a hitting section with a uniform outer diameter, one end of which is provided with an end cap, and the other end with a tapered section with a gradually decreasing outer diameter; an inner tube integrally formed from carbon fiber material, one end of which is provided with a grip section, one end of which is provided with a connecting section with a gradually expanding outer diameter, and one end of which is provided with a through section with a uniform outer diameter, the through section having an annular boss such that the outer diameter of the annular boss is larger than the outer diameter of the through section of the inner tube; and an elastic material disposed on the inner tube on one side of the annular boss.

[0005] With the above structure, the present invention can increase ball control when hitting the ball by utilizing the softness of its outer tube, while also increasing the force of hitting the ball by utilizing the protrusions provided on the inner tube. At the same time, the elastic material is used to absorb the sound generated when hitting the ball, thereby achieving the purpose of improving ball control and reducing noise. Simple Explanation of the Diagram

[0006] Figure 1 is a three-dimensional schematic diagram of the present invention.

[0007] Figure 2 is a partial three-dimensional schematic diagram of the inner tube of the present invention.

[0008] Figure 3 is a cross-sectional view along section line 3-3 in Figure 1.

[0009] Figure 4 is a magnified view of a portion of Figure 3.

[0010] Figure 5 is similar to Figure 4, and is a schematic diagram of another elastic material setting state. Implementation

[0011] The applicant hereby clarifies that, in this specification, including the embodiments described below and the claims in the claims, all directional terms are based on the directions shown in the drawings. Secondly, in the embodiments and drawings to be described below, the same element reference numerals represent the same or similar elements or their structural features, and the directions referred to in the specification are for illustrative purposes only and are not intended to be limiting.

[0012] Please refer to Figures 1 to 5. The double-layer sleeve bat structure of the present invention includes: an outer tube 10 made of carbon fiber material, the outer tube 10 having a hitting section 11 with a uniform outer diameter, one end of the hitting section 11 having an end cap 12, and the other end of the hitting section 11 having a tapered section 13 with a gradually decreasing outer diameter.

[0013] An inner tube 20, integrally formed from carbon fiber material, has a handle section 21 at one end, a connecting section 22 with a gradually widening outer diameter at one end of the handle section 21, and a through section 23 with a uniform outer diameter at one end of the connecting section 22. An annular boss 24 is provided on the through section 23, with the outer diameter of the annular boss 24 being larger than the outer diameter of the through section 23 of the inner tube. The inner tube 20 is fitted inside the outer tube 10 with its through section 23 and connected to the tapered section 13 of the outer tube with its connecting section 22. The position of the annular boss 24 corresponds to the striking section 11 of the outer tube, preferably in the middle section of the striking section 11, also known as the striking sweet spot. A gap is left between the through section 23 and the outer tube 10, and the two are separate and do not contact each other.

[0014] An elastic material 30 is disposed on the inner tube 20, located on one side of the annular protrusion 24. The elastic material 30 can be a foamed material, such as foam, foamed plastic, or rubber, which is a sound-absorbing and elastic material. The elastic material 30 can be annular, arc-shaped, or block-shaped, and its position can be on the side of the annular protrusion 24 near the grip section 21 or on the side of the annular protrusion 24 away from the grip section 21.

[0015] With the structure of this invention, the outer tube 10 has a lower hardness than the inner tube 20 and the annular protrusion 24, making the outer tube 10 more flexible and allowing it to deform upon impact. This significantly improves ball control and shock absorption. Furthermore, the annular protrusion 24 effectively limits the degree of rebound, ensuring that the ball speed does not exceed the maximum limit set by the Baseball Association. The gap between the inner tube 20 and the outer tube 10, as well as the inclusion of the elastic material 30, effectively reduce the sound during impact.

[0016] In this invention, the elastic material 30 can also be provided in two forms, which are simultaneously provided on both sides of the annular protrusion 24, that is, the annular protrusion 24 is located between the two elastic materials 30, as shown in the figure. This will result in better noise reduction and vibration damping effects.

[0017] 10: External pipe

[0018] 11: Striking Section

[0019] 12: End cap

[0020] 13: Conical segment

[0021] 20: Inner tube

[0022] 21: Grip section

[0023] 22: Connecting segment

[0024] 23: Crossing Section

[0025] 24: Annular boss

[0026] 30: Elastic material

Claims

1. A double-walled baseball bat structure, comprising: an outer tube having a hitting section with a uniform outer diameter, one end of the hitting section having an end cap, and the other end having a tapered section with a gradually narrowing outer diameter; an inner tube integrally formed from carbon fiber material, one end of the inner tube having a grip section, one end of the grip section having a connecting section with a gradually widening outer diameter, one end of the connecting section having a through section with a uniform outer diameter, the inner tube passing through the outer tube and connected to the tapered section of the outer tube by its connecting section, the through section having an annular boss such that the outer diameter of the annular boss is larger than the outer diameter of the through section of the inner tube.

2. The double-walled bat structure as described in claim 1, wherein the hardness of the annular boss is greater than the hardness of the outer tube striking section.

3. The double-walled bat structure as described in claim 1, wherein the position of the annular boss corresponds to the hitting section of the outer tube.

4. The double-walled bat structure as described in claim 3 further includes an elastic material disposed on the inner tube, located on one side of the annular boss.

5. The double-sleeve bat structure as described in claim 4, wherein the elastic material is disposed on the side of the annular boss near the grip section.

6. The double-sleeve bat structure as described in claim 4, wherein the elastic material is disposed on the side of the annular boss away from the grip section.

7. The double-walled baseball bat structure as described in claim 1 further includes two elastic materials disposed on the upper part of the inner tube, on both sides of the annular boss, such that the annular boss is positioned between the two elastic materials.

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