NL1044134B1 - Bumper plate and barbell comprising at least two of such bumper plates - Google Patents
Bumper plate and barbell comprising at least two of such bumper plates Download PDFInfo
- Publication number
- NL1044134B1 NL1044134B1 NL1044134A NL1044134A NL1044134B1 NL 1044134 B1 NL1044134 B1 NL 1044134B1 NL 1044134 A NL1044134 A NL 1044134A NL 1044134 A NL1044134 A NL 1044134A NL 1044134 B1 NL1044134 B1 NL 1044134B1
- Authority
- NL
- Netherlands
- Prior art keywords
- dumbbell plate
- plate according
- rim
- reinforcing element
- weight core
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/0054—Features for injury prevention on an apparatus, e.g. shock absorbers
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/0724—Bar-bells; Hand bars
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/0726—Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B71/00—Games or sports accessories not covered in groups A63B1/00 - A63B69/00
- A63B71/0054—Features for injury prevention on an apparatus, e.g. shock absorbers
- A63B2071/0063—Shock absorbers
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B2209/00—Characteristics of used materials
Abstract
A bumper plate that is mountable on a barbell or dumbbell bar, that has a shock absorber region that absorbs impact energy when the bumper plate hits the ground surface after being dropped. The rim of the bumper plate consists of a shock absorber region and a circumferential edge that comprises a reinforcement element that is embedded therein and is made of a different material than the rim itself. During the drop of the bumper plate, momentum causes the weight core to move eccentrically downwards with respect to the rim, causing the shock absorber region to stretch at the top, and compress at the bottom in order to absorb the kinetic energy of the decelerating weight core element.
Description
BUMPER PLATE AND BARBELL COMPRISING AT LEAST TWO OF SUCH
BUMPER PLATES
The invention relates to a bumper plate comprising a metal weight core element and a rim surrounding the weight core element and that is arranged for absorbing an impact energy when the bumper plate hits the ground surface, said rim comprising a shock absorber region and a eircumferential edge surrounding the shock absorber region
Such a bumper plate is for example known from US10010741B2, and is used for strength training and weightlifting in pairs of two, mounted on both sides of a barbell or dumbbell bar, A disadvantage of the buroper plate of UST0010741B2 18 that the allowed buffer length of the shock absorber region is limited, and therefor is its noise and vibration damping capacity. lt is an object of the invention to improve the above described bumper plate. In particular it may be an object of the invention to improve the stiffness of the circumferential edge of the bumper plate, resulting in a situation where the weight core element is placed in a hanging manner inside the circamferential edge, both being connected to each other by a dampening, for example elastic, material, forming the shock absorber region as mentioned hereafter.
The fact that the metal weight core is suspended in a hanging manner inside the circumferential edge results in evenly distributed tensile stresses in the top halve of the shock absorber region, and results in a low bounce factor of the bumper plate as a result of mass inertia,
This object is achieved by providing a bumper plate according to the preamble that in accordance with the invention comprises a reinforcement element that is at least partly embedded in and extending along the circumferential edge, wherein the reinforcement clement 1s made of a different material than the circumferential edge.
The reinforcement element is preferably made of a material having a stiffness that is higher than the material of which the rim is made, preferably an at least 300 times stiffer material than the rim.
The reinforcement element may be substantially ring shaped. Said reinforcement ring may have a reinforcement rib that extends substantially perpendicular from the reinforcement ring, in particular from the inner ring or main surface thereof, and is directed inwards. The ring shaped reinforcement element may thus have a substantially T-shaped transverse cross section.
A thickness of the material layer of the circumferential edge at an outer side of the remforcernent element with respect to the weight core element may be between 1 and 20 mm, preferably between 4 and 10 mm, more preferably about 6 mm, i.e. a skin of 1 to 20 mm, preferably of 4 to 10 mm, more preferably of about 6 mm thickness may be formed over the retoforcement element,
By choosing a material for the reinforcement element that has a substantially higher stiffness then the material in the shock absorber region, the elliptical deformation of the rim upon groond impact will be lower, and therefore the damping stroke of the bumper plate will be longer than the example of US10010731B2, namely between 60 and 120 mm, As a result, i0 the amount of absorbed impact energy will be higher, whereas the material stresses will be distributed betier.
In an embodiment of the bumper plate according to the invention the reinforcement element is made of a metal (like for example aluminum) or plastic (like for example polybutylene terephthalate (PBT), glass filled polyamid (PA-CGF), Polyoxymethylene (POM), polycarbonate (PCy). These materials allow being encapsulated in the material of the circumferential edge which may be an elastic material, while maintaining a chemical/and or mechanical bond with the material of the circumferential edge.
The reinforcement element must be as light as possible to ensure the least possible unsprung mass when impacting the ground surface during a drop. At the same time, the reinforcement element must be stiff enough to maintain a mostly round or slightly oval shape of the reinforcement clement upon impact with the ground surface. This will ensure that the dampening stroke of the bumper plate is as long as possible,
In particular the reinforcement element is made of a metal or plastic that has a relatively low weight and a relatively high stiffness, compared to the material of the rim.
Practically, the metal may have a maximum density of 1500 kg/m” and/or a stiffness of 75 GPa.
Practically the plastic may have a density of 3000 kg/m? and/or a stiffness of 5 GPa.
In an embodiment of the bumper plate according to the invention the plastic is PA-GF, which chemically bonds to a variety of thermoplastic elastomers or rubbers in a moulding process.
As described above, the rim may be made of an elastic material.
For example, the elastic material may be a Thermoplastic Vulcanizate (TPV), thermoplastic urethane (TRU), or thermoplastic elastomer (TPE), styrene butadiene rubber (SBR), ethylene propylene diene monomer (EPDM), or Nitril butadiene rubber (NBR).
In an embodiment of the bumper plate according to the invention the shock absorber region comprises a circuntferential pattern of preferably evenly spaced ribs.
The ribs may define a polygonal pattern, such as a hexagonal pattern.
The pattern may define a radial length of between 60 — 100 mm, preferably about 80
Mn,
The weight core element may be made of metal, such as for example steel or cast iron.
Such metals are relatively heavy and may thus provide sufficient weight for the bumper plate.
The bumper plate may be substantially disk shaped.
The invention also relates to a barbell, comprising at least two bumper plates according to any of the preceding claims.
The mvention will be further elucidated with reference to the attached figures, in which:
FIG. 1 is a front perspective cross-section view of a bumper plate according to an exemplary embodiment of the invention.
Figure 1 shows a bumper plate 100 according to an exemplary embodiment of the invention. The bumper plate is disk shaped with a shock absorber region 101 in the rim 102 and a circumferential edge 112. The rim 102, in particular the circumferential edge 112 thereof, comprises a reinforcement element 103 that way be made of metal of plastic, and is encapsulated 104 inside an elastic material that forms the circumferential edge 112. In this embodiment the reinforcement element 103 is substantially ring-shaped. The reinforcement element may have a perpendicular rib 105 that extends inwards from the inner ring surface of the reinforcement clement 103 to increase its ring stiffness.
The shock absorber region of the vim comprises a series of holes 106 that thereby define a pattern of ribs or walls 107. The holes pass transversely through the absorber region,
The holes 106 in this example and thereby the pattern defined by the walls 107 are hexagonal, but any shape may be used. As is shown in figure 1, part of the walls 107 extend substantially radial, wherein the substantially radially extending walls 107 may be slightly declined with respect to a purely radial direction.
When the bumper plate is dropped, it huts the ground at the bottom of the outer surface 108 of the circumferential edge 112, While the reinforcement area largely remains it's original cylindrical shape, momentum causes the weight core element 109 to continue 10 move downwards. During this movement, that is eccentrical with respect to the cylindrical or slightly oval shape of the rim, the radial walls 107 in the top area of the shock absorber region are stretched out in divection 110, absorbing kinetic energy of the weight core element, and decelerating the weight core element to zero velocity, after which it rebounds back upwards.
As a result of the elastic material the radial walls 107 will return to their original length after the drop.
The outer diameter of the bumper plate is as such, that the distance 111 between the center of the bumper plate until the ground surface is between 215 and 230 mm.
Although the invention is elucidated above on the basis of a number of specific examples and embodiments, the invention is not imited thereto, Consequently, the scope of the mvention is defined by the followmg claims.
Claims (15)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1044134A NL1044134B1 (en) | 2021-08-27 | 2021-08-27 | Bumper plate and barbell comprising at least two of such bumper plates |
PCT/NL2022/050479 WO2023027579A1 (en) | 2021-08-27 | 2022-08-22 | Bumper plate and barbell comprising at least two of such bumper plates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1044134A NL1044134B1 (en) | 2021-08-27 | 2021-08-27 | Bumper plate and barbell comprising at least two of such bumper plates |
Publications (1)
Publication Number | Publication Date |
---|---|
NL1044134B1 true NL1044134B1 (en) | 2023-03-15 |
Family
ID=79269893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1044134A NL1044134B1 (en) | 2021-08-27 | 2021-08-27 | Bumper plate and barbell comprising at least two of such bumper plates |
Country Status (2)
Country | Link |
---|---|
NL (1) | NL1044134B1 (en) |
WO (1) | WO2023027579A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170304671A1 (en) * | 2016-04-20 | 2017-10-26 | Progressive Weights, LLC | Weight systems for exercise equipment |
CN207168924U (en) * | 2017-07-27 | 2018-04-03 | 盛骏懿 | A kind of barbell with defencive function |
US10010741B2 (en) | 2016-07-28 | 2018-07-03 | Sound Shore Innovations L.L.C. | Quiet bumper plate |
CN108704256A (en) * | 2018-07-13 | 2018-10-26 | 高密市德力特鞋材有限公司 | A kind of rubber coated round dumbbell and preparation method thereof |
US20200360755A1 (en) * | 2018-01-31 | 2020-11-19 | Sound Shore Innovations L.L.C. | Modified weight training equipment |
-
2021
- 2021-08-27 NL NL1044134A patent/NL1044134B1/en active
-
2022
- 2022-08-22 WO PCT/NL2022/050479 patent/WO2023027579A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170304671A1 (en) * | 2016-04-20 | 2017-10-26 | Progressive Weights, LLC | Weight systems for exercise equipment |
US10010741B2 (en) | 2016-07-28 | 2018-07-03 | Sound Shore Innovations L.L.C. | Quiet bumper plate |
CN207168924U (en) * | 2017-07-27 | 2018-04-03 | 盛骏懿 | A kind of barbell with defencive function |
US20200360755A1 (en) * | 2018-01-31 | 2020-11-19 | Sound Shore Innovations L.L.C. | Modified weight training equipment |
CN108704256A (en) * | 2018-07-13 | 2018-10-26 | 高密市德力特鞋材有限公司 | A kind of rubber coated round dumbbell and preparation method thereof |
Also Published As
Publication number | Publication date |
---|---|
WO2023027579A1 (en) | 2023-03-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3174377B2 (en) | Fitting type bumper for air spring | |
US5236027A (en) | Wheel assembly | |
US4681304A (en) | Deflection jounce bumper for strut suspension | |
US6435540B1 (en) | Gas inflator for an airbag for reducing vibration in a steering column | |
JP2004520992A (en) | Two-stage rebound cushion for body mounting | |
JP2016500142A (en) | Damper | |
NL1044134B1 (en) | Bumper plate and barbell comprising at least two of such bumper plates | |
EP1190183B1 (en) | Air spring bumper utilizing a combination of materials | |
US6186486B1 (en) | Jounce bumper plate | |
EP2088009A2 (en) | Air spring piston | |
CN212171834U (en) | Damping mute wheel and movable equipment | |
CN212171835U (en) | Damping mute wheel and movable equipment | |
US3977271A (en) | Steering wheel | |
US4373746A (en) | Leg protector for passenger in vehicle | |
US6732775B1 (en) | Elastic wheel | |
JP6081776B2 (en) | Non-pneumatic tire | |
CN212194931U (en) | Damping mute wheel and movable equipment | |
CN212194932U (en) | Damping mute wheel and movable equipment | |
CN211390868U (en) | Vehicle frame limiting block | |
CN111284272A (en) | Damping mute wheel and movable equipment | |
CN111284273A (en) | Damping mute wheel and movable equipment | |
CN111284274A (en) | Damping mute wheel and movable equipment | |
JPH0133312B2 (en) | ||
US6782930B2 (en) | Elastic wheel | |
JP3972297B2 (en) | Vibration control device with foreign matter discharge function |