JP2018526072A - Sport or exercise exercise device for hand-shaking instruments - Google Patents

Abstract

  A hollow body defining an internal volume extending through the device and a passage extending through the mass in the direction of movement (FIG. 6), or alternatively a sleeve and / or butt end containing an air slidable mass A hand-held sport or exercise practice device configured to improve a user's swing including a slidable mass having one or more passageways that allow it to be included. The slidable mass is contained within the internal volume or additional sleeve and is in contact with the inner periphery of the hollow body or sleeve. As the user swings the device, the moment of inertia of the device changes so that the swing mechanics and / or timing can be improved.

Description

Cross-reference to related applications

  The present application includes Patent Document 1 (currently Patent Document 2) filed on December 30, 2013, Patent Document 3 filed on July 11, 2014, named “Practice Bat”, and “By Hand”. Claims the benefit of the filing date of patent document 4, filed August 3, 2015, entitled “Sport or Exercise Exercise Device for Shaking Equipment”, the entire contents of which are hereby incorporated by reference. Shall be quoted in

  The present invention generally relates to exercise devices for exercise, sports, etc., and more particularly designed to improve swing timing, power, and / or mechanics, such as baseball / softball bats, rackets, golf clubs, etc. It is related with a training device to shake by hand such as.

  Practice bats, rackets, golf clubs and the like having a cylindrical or spherical stationary weight are well known. For example, many baseball practice bats primarily include “donuts” or other weights that are used to develop physical strength or practice and improve batter swing techniques. This type of structure includes bats having an unusual weight distribution as well as bats having removable or movable weights supported therein or thereon.

  For example, Patent Document 5 discloses a bat provided with an impact force multiplying device. The impact device includes an elongated hollow passage defined in a striking end of a bat in which a plurality of weighted spherical balls are freely movable. The closure plug is screwed onto the striking end of the bat to close the passage and confine the weighted ball in the passage. In an alternative embodiment, the elongated cylindrical sliding weight replaces a spherical ball. When the centrifugal force drives the weight member outwardly from the passing end far from the striking end of the bat to the striking end, the intended function is provided by a change in the bat characteristics during the swing.

  Another example includes U.S. Patent No. 6,057,056, which describes a practice bat having an elongated hollow bat for baseball practice in which an elongated longitudinal rod is supported. The chamber extends along a portion of the elongated rod and carries a slidable weight therein. While swinging the bat, the centrifugal force drives the weight outward toward the striking end of the bat.

US Non-Provisional Patent Application No. 14 / 143,804 US Pat. No. 9,095,739 U.S. Partial Continuation Application No. 14 / 329,590 US Partial Continuation No. 14 / 817,130 US Pat. No. 514,420 US Pat. No. 3,578,801

  While the aforementioned devices serve their intended purpose, there continues to be a continuing need for techniques for improved performance and practice devices.

  The present disclosure generally relates to a practice device such as a bat, racket, or club with a hollow body that defines an internal volume. The internal volume includes a slidable mass having a passage extending through the mass in the direction of movement. Furthermore, the slidable mass is contained within the internal volume of the device and is in contact with the inner circumference of the device or within the sleeve within the device, thereby circumferentially during the swing movement. Can be slidably engaged along.

  The slidable mass results in a changing (dynamic) moment of inertia (MOI). Thus, embodiments include a passage in a mass having a different diameter at each tip or in the passage, thereby controlling the rate of change of inertia (ie, a control mechanism for dynamic MOI) ) Can be provided.

  As the mass moves further away from the center of rotation, the moment of inertia changes. The following relationship represents this effect.

I = moment of inertia = moment of inertia of the _bat (I _bat ) + the product of the slider mass and the square of the distance from the center of rotation (r ² ). Therefore, I _total = I _bat + slider mass xr ² , where r increases.

  Various other objects and advantages of the present invention will become apparent from the following description thereof. Accordingly, to the accomplishment of the above objects, the present invention includes the features fully described below and particularly pointed out in the claims in the detailed description of the preferred embodiments. However, the description only discloses some of the various ways in which the invention can be implemented.

FIG. 4 shows a front perspective view of an embodiment of a slidable mass for the bat of the present invention. FIG. 2 shows a rear perspective view of the embodiment of the slidable mass for the bat of the present invention shown in FIG. 1. FIG. 2 shows a front elevation view of the embodiment of the slidable mass shown in FIG. 1. FIG. 3 shows a rear elevation view of the embodiment of the slidable mass shown in FIG. 2. FIG. 3 shows a side view of an embodiment of the bat of the present invention. FIG. 6 shows a cross-sectional view along the line AA of the embodiment shown in FIG. 5. 7 shows an enlarged cross-sectional view of the slidable mass of the embodiment shown in FIG. Fig. 5 shows an alternative embodiment of a slidable mass. FIG. 9 illustrates a cross-sectional view of a bat utilizing the slidable mass and accessory sleeve of FIG. 2 shows an embodiment of a bat. Section AA of FIG. 10 is shown. Shows the handle and neck of the exercise device. Section AA of FIG. 12 is shown. FIG. 14 shows detail B of FIG. Detail C of FIG. 13 is shown. A slidable mass is shown. Fig. 5 shows another slidable mass embodiment.

  1-4 and 6, a slidable mass 2 having a passage 4 extending through the mass in the direction of movement M is shown. The slidable mass 2 is typically cylindrical (but oval and other shapes are possible) and is made of a metal such as steel or aluminum depending on the amount of weight required. . Although not shown in the drawings, it is possible to include multiple lumps 2 or use a “stackable” or “nested” mass instead of a single slidable mass to It should be understood that the ability to customize both weight and “feel” can be provided. A coating or lubricant can be used on the bat mass 2 and / or the inner surface to facilitate sliding.

  The mass 2 further includes an outer surface 6 that preferably includes one or more seals 8 to provide a smooth sliding motion. For example, a pair of seals arranged on the outer periphery of the mass 2 in proximity to each end of the mass can be used. In the completed practice bat, the seal 8 is shown in FIGS. 6 and 7 and is a material that contacts the inner circumference of the bat and allows sliding relative to the inner surface of the bat, as further detailed below. For example, nylon or polytetrafluoroethylene. Although the seal has been shown to be an annular structure, any other configuration that contacts the inner circumference of the bat and allows the mass 2 to slide can be used.

  The passage 4 extending through the slidable mass 2 preferably has a different diameter at each end of the mass, such as a diameter 10 and a diameter 12 in FIGS. 3 and 4, respectively. Different diameter openings can extend a predetermined distance through the mass 2 as shown, for example, in FIG. 6, thereby giving the passages different diameters. By having different diameters for the passages, the speed of movement of the mass 2 can be more precisely controlled and has various effects during the swinging motion. For example, if the mass is located near the center of rotation at the start of the swing, the smaller inertia allows for controlled and enhanced bat angular acceleration. Under the force of centripetal acceleration, the mass slides outward. The hole provides a way to control the speed at which the mass moves towards the end of the bat, with the aim of optimizing the position of the sweet spot (ball hitting center) during the bat-ball collision, and the mass is further outward Provides increased inertia to help practice swinging swings when moving.

  5-7, there is shown an embodiment of the bat 20 of the present invention that utilizes the sliding mass described above. The bat has a relatively thick barrel portion 22 at the apex of an end cap 24 (which acts as a stop for the mass 2 and can be made of, for example, rubber or similar material), a joint style or handle taper portion 26, and a handle. A portion 28 is included. Various bat styles can be used depending on the desired characteristics and the ability to change or change the slidable mass 2 with or without an end cap.

  The slidable mass shown in this embodiment does not contact any structure in the barrel portion 22 except the inner periphery 30 and the end cap 24 on which it slides (other embodiments have no end cap). In some cases, the mass contacts the end of the barrel portion 22). Therefore, during the bat user's swing, air passes through the passage 4 and the mass 2 moves (M) towards the butt end / end cap.

  While not intending to limit this disclosure to any particular mechanism of action, the following description of the mechanism of the bat of the present invention is provided. The slidable mass 2 provides an MOI with a small dynamic moment of inertia (MOI) before starting the swing. In the motion of swinging the bat, centripetal acceleration acts on the bat causing variations in the position of the slidable mass, which increases the MOI as the swing progresses.

  In other words, the small MOI at the beginning of the swing allows the batter to achieve a higher swing speed with more control up to the point of contact with the ball. For the increasing MOI of the part after the swing, the bat user will practice swinging off the swing after the ball and bat contact.

The moment of inertia is a physical property that provides a measure of the body's resistance to changes in its angular rotational speed. The determination of MOI is accomplished by defining a group of small individual mass particles (the sum of which is equal to the total mass) and determining the distance (r _i ) of the mass particles (m _i ) from the specified axis of rotation. Is done. In this case, the MOI can be calculated as follows.

  Here, N is the total number of separate particles, and the subscript p is the point where the rotation axis pass is finished.

  Thus, the bat of the present invention moves by the movement of the mass by centripetal acceleration towards the closed volume of air at the end of the bat. The movement of the moving slidable mass compresses the air into a smaller volume with higher pressure, causing the air to flow through a passage through the center of the mass. The passageway provides a control mechanism for sliding speed and thus limits the change in MOI. Thus, the swing force can be customized for various batter strengths and other attributes.

  FIGS. 8 and 9 show an alternative embodiment of a slidable mass and accessory sleeve for use within the bat of the present invention. A generally cylindrical sleeve 40 (which can be made from any rigid material such as metal, but is preferably made from an elastic material such as urethane) is nested within the inner surface 30 of the barrel portion 22. As such, it can be added inside the bat. The sleeve provides an additional channel that includes a slidable mass so that dents or other damage to any barrel portion 22 does not interfere with the sliding motion of the mass.

  The sleeve 40 can include a hole so that air can be released from the sleeve as the slidable mass 44 moves toward the hole 42. In this embodiment of the slidable mass, the passage 50 exists through the mass 44 to allow air transfer during mass movement, and the weight 46 is detachable in the internally threaded portion 48. Attached to. The weight 46 is removable to facilitate the use of various weights according to the user's choice.

  FIG. 9 shows a cross-sectional view of a bat utilizing the sleeve and the slidable mass of FIG. Due to the tapered conical shape and length of the weight 46, depending on the bat, it can penetrate the tapered portion 26 of the bat and even reach the end of the handle portion 28. Thus, when the slidable mass 44 and attached weight 46 move approximately the length of the bat from the handle to the end cap 24, the user experiences an improved swing motion.

  While the bat 20 and the sleeve 40 can be designed such that the end cap 24 and the handle portion 28 stop the movement of the slidable mass 44 so that the slidable mass 44 is contained within the sleeve 40, the sliding The sleeve 44 also includes an end that fits in the opening and around the sleeve 40 so that a possible mass 44 is included and the sleeve is positioned with a space between the sleeve of the bat and the inner surface 30. Attachments 52 (eg, plugs) and 54 (eg, grommets) can also be included. The end fitting can be an additional part or formed in one piece with the sleeve.

  In addition, a bat with a hollow interior and a removable end cap, a cylindrical sleeve that fits in a nested arrangement within the hollow interior, and a slidable mass configured to slide within the sleeve A kit is provided. A combination of removable weights, end fittings, and other accessories can further be included.

  Referring to FIGS. 10 and 11, a sports or exercise practice device 60 (which swings with one hand or both, such as a bat, racket, or golf club), which includes a hollow body defining an internal volume and a slidable mass 62. Can be realized with the instrument). In this embodiment, the hollow body includes a magnet 64 disposed at the handle end (shown as the tapered end of the device 60), and the slidable mass 62 is slidable by the magnetic force on the magnet 64. At least a magnetic portion configured to receive the mass 62. To swing off the slidable mass 62 from the magnet 64, the user applies a swing force.

  The slidable mass 62 is contained within and slides within a generally cylindrical sleeve 66 having a first end and a second end. The generally cylindrical sleeve 66 is defined to include polygons and other shapes (eg, octagonal sleeves) that approximate a cylinder. The generally cylindrical sleeve 66 is arranged so as to be nested with the inner periphery 68 of the hollow body, and is held in a nested arrangement by, for example, a plurality of columns 70.

  As shown in FIGS. 12-15, the practice device 71 features a hollow interior volume with a sleeve 72 arranged in a configuration nested with an inner surface 74 by struts 76. Sleeve 72 further includes a pair of openings (78 and 80) disposed proximal to each end of the sleeve. Preferably, the larger opening was positioned closest to the handle end 81 of the device 71 so that the slidable mass 82 inside the sleeve can return more quickly to the handle end. Alternatively, the pair of openings can be at the butt end (eg, the opening 85 of the end cap 84) and at the opposite end of the sleeve (eg, the opening 78).

  Because of the struts 76, the slidable mass 82 does not contact any structure in the hollow body except for the inner surface of the generally cylindrical sleeve and the end cap 84 of the device (or end fitting of the sleeve).

  Further, as shown in FIGS. 16 and 17, the slidable mass 90 can include longitudinal passages 92 with different diameters at each end, or the slidable mass 94 can be There may be a passage in the outer layer 96 that forms a notch or notch 98 that allows for air displacement when sliding. Alternatively, the notch 98 may be included on the outer periphery of the sliding mass 94 and not included in the additional outer layer.

  Various changes in the details and parts described may be made by those skilled in the art within the principles and scope of the invention as described herein and defined in the accompanying claims. Thus, although the invention has been illustrated and described herein as to what is considered the most practical and preferred embodiment, deviations can be made therefrom within the scope of the invention. Thus, it is not to be limited to the details disclosed herein, but is to be given the full scope of the claims to include any and all equivalent methods and products.

Claims (7)

A sports or exercise practice device configured to swing with one or both hands of a user,
A hollow body defining an internal volume;
A slidable mass, wherein the slidable mass is contained within and slides within a generally cylindrical sleeve having a first end and a second end; and The generally cylindrical sleeve is nested within an inner periphery of the hollow body, and the sleeve is disposed at least one pair disposed proximal to each sleeve end or at the device end and opposite end of the sleeve. An opening, and one of the at least one pair of openings is larger than the other slidable mass;
A training device with   The practice device according to claim 1, wherein the substantially cylindrical sleeve is held in a nested arrangement by a plurality of support columns.   The slidable mass does not contact any structure in the hollow body except for an inner surface of the generally cylindrical sleeve and an end cap of the device or an end fitting of the sleeve. Practice equipment.   The practice device of claim 1, wherein a magnet is disposed at a handle end, and the slidable mass includes at least a magnetic portion configured to receive the slidable mass by a magnetic force on the magnet. . A sports or exercise practice device configured to swing with one or both hands of a user,
A hollow body defining an internal volume in the practice device;
A slidable mass having a passage extending through the mass in the direction of movement, wherein the slidable mass is contained within the internal volume, and the passage extending through the mass comprises: A slidable mass having a different diameter at each end of the mass;
A training device with   The hollow body includes a magnet disposed at a handle end of the device, and the slidable mass receives the slidable mass by a magnetic force on the magnet and swings by the user 6. The practice device of claim 5, comprising at least a magnetic portion configured to swing off the slidable mass from the magnet upon application of force.   The practice device of claim 5, wherein the slidable mass does not contact any structure in the hollow body except for an inner surface of the internal volume and an end cap of the device.

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