A new bowling ball core

Abstract

This utility model discloses a novel bowling ball core, comprising a spherical core body, a stepped connecting seat fixedly connected to the bottom end of the spherical core body, an elliptical opening on the surface of the spherical core body, an annular protrusion fixedly connected to the top end of the spherical core body, a cross protrusion fixedly connected to the top end of the annular protrusion, symmetrically formed long arc-shaped recesses and shield-shaped recesses on the surface of the spherical core body, and symmetrically arranged transverse protrusions and elongated protrusions on the surface of the spherical core body. The transverse protrusions are fixedly connected to the spherical core body through the shield-shaped recesses, and the elongated protrusions are fixedly connected to the spherical core body. This utility model, through the eccentric arrangement of the elliptical opening and the spherical core body, can intentionally create local mass differences, precisely adjust the core's center of gravity offset angle, and adapt to various trajectory requirements.

Description

Technical Field

[0001] This utility model relates to the field of sporting goods technology, specifically a novel bowling ball core. Background Technology

[0002] Bowling, as a sport that combines competition and entertainment, relies heavily on the structural design of its core equipment, the bowling ball. This core is not only the "weight-bearing center" but also the "center of gravity control." Firstly, the density distribution and geometric design of the core directly determine the ball's overall mass distribution. For example, a high-density area near the center enhances inertia, while a lightweight design at the edges reduces starting resistance. Secondly, structural differences in the core directly adapt to different lane environments (the high friction of wooden lanes versus the low resistance of synthetic lanes), thus affecting the ball's trajectory (such as the turning radius in oiled and unoiled areas), rotational stability (whether "wagging" occurs during high-speed rotation), and impact feedback (the impact force perceived by the player's hand and the precision of ball control). It can be said that the core's structural design is like the "heart" of a bowling ball. Every protrusion, indentation, or weight distribution gives the ball unique properties, which is not only the foundation for amateur players to achieve "easy ball control" but also the key for professional players to accurately control tactical trajectories such as "curve shots" and "straight shots". While the aforementioned applications meet users' needs to a certain extent, certain shortcomings still exist during use. Specific problems include: low precision in center of gravity control, poor trajectory adaptability, reliance on a single counterweight for center of gravity adjustment, a small offset range, and an inability to meet the precise requirements of professional players for differentiated trajectories such as "curved shots" and "straight shots." Furthermore, the fixed center of gravity mode results in insufficient adaptability to the fairway oil zone, low trajectory tolerance, and a tendency for "slippery balls" and "spin deviation" issues. Additionally, the outer polyurethane shell is often glued together with simple snap-fit ​​connections, and the bottom connector is often injection molded in parts, resulting in weak structural stability, poor assembly adaptability, and the lack of a positioning reference for the connector, which easily leads to coaxiality deviation with the shell during assembly, further exacerbating center of gravity shift. Therefore, this utility model designs a novel bowling core to solve the above problems. Summary of the Invention

[0003] This invention provides a novel bowling ball core that can effectively solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel bowling ball core, comprising a spherical core body, a stepped connecting seat fixedly connected to the bottom end of the spherical core body, an elliptical opening on the surface of the spherical core body, an annular protrusion fixedly connected to the top end of the spherical core body, a cross protrusion fixedly connected to the top end of the annular protrusion, long arc-shaped recesses symmetrically formed on the surface of the spherical core body, shield-shaped recesses symmetrically formed on the surface of the spherical core body, and transverse protrusions and elongated protrusions symmetrically arranged on the surface of the spherical core body. The transverse protrusions are fixedly connected to the spherical core body through the shield-shaped recesses, and the elongated protrusions are fixedly connected to the spherical core body.

[0005] As a preferred embodiment of the present invention, the stepped connecting seat is arranged collinearly with the central axis of the spherical core body, and the outer end face of the stepped connecting seat is a horizontal stepped surface.

[0006] As a preferred embodiment of the present invention, the center of the elliptical opening is eccentrically arranged with respect to the center of the spherical core body, and the edge of the opening is rounded with a chamfer.

[0007] As a preferred embodiment of the present invention, the long arc-shaped depressions are symmetrically distributed in two groups along the circumference of the spherical core body, and the depth of the depressions gradually increases from the top to the middle.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: By eccentrically arranging the elliptical opening and the spherical core body, local mass difference can be deliberately created, and the core's center of gravity offset angle can be precisely adjusted to adapt to the trajectory requirements of multiple scenarios. The stepped connecting seat and the spherical core body are set on the same axis, which can disperse part of the impact force at the moment of hitting the ball and avoid the problem of traditional connecting seats easily falling off. At the same time, the horizontal stepped surface forms a clear axial positioning reference, further avoiding the offset of the center of gravity. The edge of the elliptical opening adopts a rounded transition chamfer, which can eliminate the stress concentration caused by sharp edges, making the structure more stable and extending the service life of the core. Attached Figure Description

[0009] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0010] In the attached diagram: Figure 1 This is a schematic diagram of the spherical core body in this utility model; Figure 2 This is a schematic diagram of the long arc-shaped recess in this utility model; Figure 3This is a schematic diagram of the shield-shaped recess in this utility model; Figure 4 This is a schematic diagram of the elliptical opening in this utility model; The following are labeled in the diagram: 1. Spherical core body; 2. Stepped connecting seat; 3. Elliptical opening; 4. Annular protrusion; 5. Cross protrusion; 6. Long arc-shaped depression; 7. Shield-shaped depression; 8. Horizontal protrusion; 9. Long strip protrusion. Detailed Implementation

[0011] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0012] Example: Figure 1-4 As shown, this utility model provides a technical solution: a novel bowling ball core, comprising a spherical core body 1, a stepped connecting seat 2 fixedly connected to the bottom end of the spherical core body 1, an elliptical opening 3 on the surface of the spherical core body 1, an annular protrusion 4 fixedly connected to the top end of the spherical core body 1, a cross protrusion 5 fixedly connected to the top end of the annular protrusion 4, long arc-shaped recesses 6 symmetrically formed on the surface of the spherical core body 1, shield-shaped recesses 7 symmetrically formed on the surface of the spherical core body 1, and transverse protrusions 8 and elongated protrusions 9 symmetrically arranged on the surface of the spherical core body 1. The transverse protrusions 8 are fixedly connected to the spherical core body 1 through the shield-shaped recesses 7, and the elongated protrusions 9 are fixedly connected to the spherical core body 1.

[0013] In this implementation scheme: the spherical core body 1 serves as the core load-bearing structure, integrating the mounting base of all components; the stepped connecting seat 2 is fixed to the bottom of the spherical core body 1, providing an axial connection interface; the elliptical opening 3 is formed on the surface of the spherical core body 1, creating a lateral mass loss area; the annular protrusion 4 protrudes from the top of the spherical core body 1, providing a mounting carrier for the cross protrusion 5; the cross protrusion 5 is fixed to the top of the annular protrusion 4, forming a top identification structure; the long arc-shaped recess 6 is symmetrically formed on the surface of the spherical core body 1, reducing local mass circumferentially; the shield-shaped recess 7 is symmetrically formed on the surface of the spherical core body 1, providing mounting space for the transverse protrusion 8. The shield-shaped recess 7 is embedded into the protrusion 8 and connected to the spherical core body 1 to form a local mass protrusion. The elongated protrusion 9 is directly fixed to the surface of the spherical core body 1 to form a lateral mass protrusion. The above components are integrated through the relationship of "protrusion-recess-connection" to jointly change the mass distribution and geometric contour of the core, giving the bowling ball specific physical properties. The combination of protrusions / recesses in multiple parts precisely controls the center of gravity of the core, optimizes the bowling ball's rolling trajectory, such as the differentiated performance of curved balls and straight balls. The modular structural design improves the molding processability and reduces the processing difficulty. The symmetrical distribution of surface features ensures the balance of the core, avoids eccentric shaking during rolling, and improves the stability of the shot.

[0014] Furthermore: In an optional embodiment, the stepped connecting seat 2 is arranged collinearly with the central axis of the spherical core body 1, and the outer end face of the stepped connecting seat 2 is a horizontal stepped surface.

[0015] In this embodiment: the stepped connecting seat 2 and the spherical core body 1 are arranged coaxially to ensure that the center of the connecting seat coincides with the center of the ball. The horizontal stepped surface of the stepped connecting seat 2 forms an axial positioning reference to avoid the core center of gravity shift caused by the eccentricity of the connecting seat, ensuring the consistency of the bowling ball's rolling trajectory. The horizontal stepped surface provides a clear installation position for external components such as the ball shell, improving production efficiency. The coaxial design disperses axial stress and prevents the connection part from cracking due to eccentric force.

[0016] Furthermore: In an optional embodiment, the center of the elliptical opening 3 is eccentrically arranged with respect to the center of the spherical core body 1, and the opening edge is chamfered with a rounded transition.

[0017] In this embodiment, the center of the elliptical opening 3 is eccentrically positioned with respect to the center of the spherical core body 1, intentionally creating a local mass offset. The rounded transition chamfer at the edge of the opening eliminates sharp edges and disperses stress concentration areas. By precisely adjusting the center of gravity of the core through the eccentric opening, the design of special trajectories such as the "curved ball" of a bowling ball can be achieved. The rounded chamfer avoids stress concentration, improves the impact resistance of the opening, and extends the life of the core. The eccentric opening changes the surface airflow distribution and helps optimize rolling resistance characteristics for the actual scenario of the bowling lane.

[0018] Furthermore: In an optional embodiment, two sets of long arc-shaped depressions 6 are symmetrically distributed along the circumference of the spherical core body 1, and the depth of the depressions gradually increases from the top to the middle.

[0019] In this embodiment, two sets of long arc-shaped depressions 6 are symmetrically distributed around the spherical core body 1, forming a symmetrical mass loss area. The depth of the depressions gradually increases from the top to the middle, creating a mass gradient that is shallower at the top and deeper at the bottom. This changes the rotational inertia distribution of the core, and the mass gradient optimizes the rotational inertia, making the bowling ball's initial spin smoother and its continuous spin more stable. The symmetrical distribution of the two sets of depressions avoids mass loss on one side, ensuring balance during rolling and preventing "spin deviation." The unique mass distribution allows players to more accurately perceive the change in the center of gravity when hitting the ball, improving the control experience.

[0020] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel bowling ball core, characterized in that: The device includes a spherical core body (1), with a stepped connecting seat (2) fixedly connected to the bottom end of the spherical core body (1). An elliptical opening (3) is provided on the surface of the spherical core body (1). An annular protrusion (4) is fixedly connected to the top end of the spherical core body (1). A cross protrusion (5) is fixedly connected to the top end of the annular protrusion (4). A long arc-shaped recess (6) is symmetrically provided on the surface of the spherical core body (1). A shield-shaped recess (7) is symmetrically provided on the surface of the spherical core body (1). A transverse protrusion (8) and a long strip protrusion (9) are symmetrically provided on the surface of the spherical core body (1). The transverse protrusion (8) is fixedly connected to the spherical core body (1) through the shield-shaped recess (7). The long strip protrusion (9) is fixedly connected to the spherical core body (1).

2. The novel bowling ball core according to claim 1, characterized in that: The stepped connecting seat (2) is arranged collinearly with the spherical core body (1), and the outer end face of the stepped connecting seat (2) is a horizontal stepped surface.

3. The novel bowling ball core according to claim 1, characterized in that: The center of the elliptical opening (3) is eccentrically arranged with the center of the spherical core body (1), and the edge of the opening adopts a rounded transition chamfer.

4. The novel bowling ball core according to claim 1, characterized in that: The long arc-shaped depressions (6) are symmetrically distributed in two groups along the circumference of the spherical core body (1), and the depth of the depressions gradually increases from the top to the middle.

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