Dumbbell plate

Abstract

Disadvantageously, dumbbell plates which can be fixed by means of a high force and dumbbell plates which have a dangerous non-radial outer edge are unpopular. The aim of the invention is to overcome said disadvantages. This is achieved by means of a dumbbell plate which has a handle (01) and which, when opened, can be vertically plugged onto a horizontally positioned dumbbell bar and, when plugged onto the dumbbell bar, can be transferred, via the handle (01), into a closed state, in which the dumbbell plate is force-fittingly fixed to the dumbbell bar. The dumbbell plate has a toggle-clamp mechanism which can be released comfortably and has at least one concave elastomer block (24), which can be exchanged without tools, as a handle for adjusting the elastic fixing force. A central center of gravity is ensured by balancing weights (9 and 10). A circular outer edge of the dumbbell plate is ensured in the closed state by a radial closure (15) (see figure 7). Thus, for the first time, a dumbbell plate is advantageously provided which can be operated safely and comfortably using one hand and which can be used in particular in commercial and professional fitness centers with increased customer satisfaction.

Description

[0001] -08-2024-39000001-Main Post Office-0013 07-08-2024-33000001 “Main Post Office-0013 PCT / DE2024 / 000066

[0002] RENZ-CPL-PCT Page 1 of 27 f'

[0003] weight plate

[0004] SCIENTIFIC AREA

[0005] The present invention relates to mountable and dismountable weights. Depending on the function of the weights – including crane weights, counterweights, center of gravity stabilizers, and weight plates – typical parameters include density, elasticity, impact resistance, corrosion resistance, and compatibility with adjacent materials, which are incorporated into a corresponding parameterization.

[0006] GENERAL BACKGROUND

[0007] The present invention relates to weight plates according to the preamble of the independent claims. Typically, weight plates are designed to be placed on or removed from a barbell to provide different weights for strength and conditioning training. Training equipment, methods, and advantageous and adaptable handles can be found in DE 202023002542 Ul and the documents cited therein.

[0008] DESCRIPTION OF THE STATE OF THE TECHNOLOGY

[0009] From KR 101115444 Bl, weight plates with a handle and a locking mechanism are known, which can be fixed to barbell bars with adapted retaining profiles and a locking rear grip. A disadvantage is that such plates cannot be securely fixed to the usual round barbell bars or to various established barbell bars with slightly varying outer diameters in typical gym use.

[0010] A further disadvantage is that only very expensive barbell bars can be used for precise measurements. -08-2024-39000001-Main Post-0014 07-08“2024~3300Ü001”HauP^Pos-4-OÜ14 PCT / DE2024 / 000066

[0011] RENZ-CPL-PCT Page 2 of 27 and highly accurate external dimensions; worn barbell bars quickly show slight, uneven play with established, fixed weight plates.

[0012] A further disadvantage is that training at Olympic level, where the weights must be fixed to a barbell without play and absolutely firmly, is only possible with special safety clamps that are cumbersome to attach and require great clamping force.

[0013] Another disadvantage is that with professional barbell bars, the support area for the weight plates is connected to the grip area via a bearing; with poorly balanced weight plates, this leads to twisting and turning during use; as a result, the center of gravity shifts during training, and uncontrolled compensatory movements as well as sudden changes in grip increase the risk of injury, especially for inexperienced users.

[0014] In light of these disadvantages and the existing need for a holder that can be safely operated with one hand by virtually any user on a wide range of barbells in a training studio, the applicant has already proposed several weight plates, each of which can address some of the identified disadvantages:

[0015] German patent DE 202022001378 Ul discloses weight plates with rotating and locking pawls that can engage an insertable barbell in a C-profile weight plate. The mechanisms offer one-handed operation but cannot yet provide a play-free fixation when barbells with slightly different outer diameters are used.

[0016] From DE 102022004703 A1, weight plates with a C-profile are known in which interchangeable elastomer profiles enable a secure, elastic fixation on barbell bars with slightly different outer diameters. The adverse risk of objects becoming trapped or dragged into the gap of the C-profile plate is addressed here with a two-winged, symmetrical gap closure. However, symmetrical -08-2024-39000001-Hauptpost-0015 07-08-2024-330Ü0ÜÜ1-HauPtPoSt-0015 PCT / DE2024 / 000066

[0017] RENZ-CPL-PCT Page 3 of 27

[0018] The gap between the plates creates a long, central gap in which thin, loose items protruding from the user, such as hair or clothing, can become trapped. Furthermore, the individual wings of such weight plates tend to warp or shift slightly during use. If a barbell with multiple plates is set down with the gap facing downwards, it will roll towards the less protruding segment. If a heavy barbell rolls towards the user after being set down, impact on the shin, resulting in bruising or even more serious injuries, cannot be ruled out. Another disadvantage is that a fixed weight plate has no locking mechanism or securing force; it can open even with minimal force due to unintentional activation of the locking mechanism.

[0019] German patent DE 102022004 704 Al proposes additionally adjustable handles, which allow the clamping force to be adjusted to different barbell diameters by aligning a polymer block. Furthermore, a toggle-lever mechanism provides a locking force for the holding position. The locking force of the toggle-lever mechanism proved to be a significant disadvantage; while it provides improved safety, it led to reduced acceptance among a considerable number of users. Locking mechanisms that can be operated with one hand but can only be released with considerable force are not to everyone's liking and reduce customer satisfaction, also known as customer compliance.

[0020] The object of the present invention was therefore to overcome the disadvantages newly recognized in practical application and to provide a weight plate which, despite being securely fixable in one-handed operation, is easily removable and can be used with increased safety.

[0021] The solution to this problem is achieved according to the features of the independent claims. Advantageous embodiments are shown in -08-2024-39000001-Hauptpost-0016 07-Oß-2024“38üüOGül-HaustPosi-üülß PCT / DE2024 / 000066

[0022] RENZ-CPL-PCT Page 4 of 27 from the dependent claims and the following description.

[0023] SUMMARY OF THE INVENTION

[0024] According to the invention, a weight plate with a C-shaped base has a longitudinal slit and a handle 01. In an open state, the weight plate can be mounted vertically onto a horizontally arranged barbell. Once mounted, the weight plate can be moved into a closed state, where it is positively locked to the barbell, using the handle 01. Crucially, the weight plate has a toggle clamp mechanism with at least one handle for adjusting the elastic clamping force. Furthermore, in the closed state, the weight plate has a substantially central center of gravity. The toggle clamp mechanism is coupled to a slit closure, and the slit closure has a radial end 15. In the closed state, the radial end 15 forms a circular outer edge of the weight plate that continuously closes.

[0025] DESCRIPTION OF THE INVENTION AND ADVANTAGEOUS FEATURES

[0026] Conventional weight plates can be attached to a barbell and feature a locking mechanism. The weight plate according to the invention has a C-shaped base with a longitudinal slit and a handle 01. In its open position, the weight plate can be attached vertically to a horizontally arranged, standard barbell. Specially profiled weight plates or those with vertical retaining ribs are not necessary. Once attached, the weight plate can be moved with one hand, using the handle 01, into a closed position that is securely fixed to the barbell. Crucially, the weight plate has a toggle clamping mechanism with at least one handle for adjusting the elastic clamping force.

[0027] Toggle clamp mechanisms are generally established in the field of fixing aids for tradespeople. A characteristic of such mechanisms is that the locking mechanism, when exceeding a certain value, is... -08-2024-39000001-Hauptpost-0017 07-08-2024-380Ü0001-HauPtPDSt”0017 PCT / DE2024 / 000066

[0028] RENZ-CPL-PCT Page 5 of 27

[0029] The device closes at the point of maximum pressure. This is often referred to as an "over-the-center" closure. As a result, the closed device is subject to a counterforce, which effectively prevents accidental opening or release. Explanations of the basic principle, established designs, and supplementary assemblies can be found in documents from the trade sector, such as US2,350,034A, US2,544,329A, US2,577,029A, DE 1986495U, EP 0 243 599 Bl, DE 19931987 CI, US 6,591,719 Bl, and US 6,776,072 B2.

[0030] A mechanism for adjusting the elastic clamping force allows the clamping force of the weight plate to be adjusted in the closed position. This adjustment can be achieved, for example, by selecting and replacing at least one tool-free interchangeable elastomer block in the contact area: harder and / or thicker elastomer blocks offer increased elastic clamping forces at a fixed closing position. Alternatively, preferably in combination with the at least one interchangeable elastomer block, mechanical components allow the distance between the assemblies that forcefully enclose the barbell in the closed position to be reduced or increased.

[0031] The weight plate according to the invention has a substantially central center of gravity in the closed state; crucially, the center of gravity is aligned so close to the barbell that no effective rolling or rotational moment occurs when the barbell is set down. Furthermore, the toggle clamp mechanism is coupled with a split closure. The split closure has a radial end 15, which, in the closed state, forms a continuous circular outer edge of the weight plate. Combined with the centrally aligned center of gravity, this continuous circular outer edge ensures safe placement over the barbell without subsequent lateral rolling. For the first time, a weight plate that can be operated safely and conveniently with one hand is provided, which is particularly suitable for use in commercial and professional training studios, thus increasing customer satisfaction.-08-2024-39000001-Main Post Office-0018 07“08“2024-380ÜüÜül“Main Post Office-0018 PCT / DE2024 / 000066.

[0032] RENZ-CPL-PCT Page 6 of 27

[0033] Preferably, the toggle clamp mechanism includes a quick-release lever 20, which is located in the grip area of ​​the handle 01 and allows the closed position to be released with less force via a lever mechanism. Force-amplifying operating elements also enable people with generally lower strength to handle the weight plate safely during a strength training or rehabilitation program. This makes the weight plate usable in sports medicine rehabilitation programs, geriatric strength training programs, or in commercial studios for related customer groups in these areas.

[0034] Preferably, the weight plate has a quick-release lever with force amplification and locking function 22, which:

[0035] - is located in the grip area of ​​handle 01;

[0036] - a lever mechanism with an extended hand lever with a terminal, closing thickening, wherein furthermore

[0037] - the lever mechanism has a C-shaped locking tooth that engages a pin when closed and

[0038] The lever mechanism features an opening tooth that rotates against elastic spring force, releasing the closed position. A hand lever with a longer grip area and end thickening ensures a secure grip and release of the mechanism, even for users with exceptionally large or small hands: The extended lever provides a sufficiently large grip area, and the end thickening reliably prevents slippage during operation. Furthermore, the longer lever increases the force amplification, allowing users with limited grip strength to handle this version of the weight plate safely. Ideally, the weight plate also features additional lateral grip areas to enable users with limited grip strength to first release the plate with one hand and then to remove or attach it with two hands.

[0039] Preferably, the weight plate has at least one first -08-2024-39000001-Main Post-0019 07-08-2Ü24“39000001-HauP*PaSt-0019 PCT / DE2024 / 000066

[0040] RENZ-CPL-PCT Page 7 of 27

[0041] The weight plate includes two counterweights: one 09 and a second 10. These counterweights are detachably connected to the weight plate. Detachable counterweights ensure adjustability and repairability of the weight plate when it is assembled exclusively with screws, preferably a single type of screw. Should the center of gravity shift too much during standard retrofitting or modifications to existing systems, the counterweights can be easily replaced to rebalance the plate and reliably prevent rolling after the barbell is set down.

[0042] Preferably, the gap closure is a multi-part assembly that pivots laterally during opening. In its closed state, the gap closure, designated as a gap closure 14, completely closes the remaining longitudinal gap of the weight plate with the barbell fixed in place. This multi-part gap closure, pivoting into the weight plate housing via hinges, provides a mechanically stable, radial outer edge and a completely closed gap without any vertical closing edges or mechanical play when closed. Preferably, the gap closure and housing are the same color, so that in the closed state, a visually uniform, continuous surface clearly indicates the status of the weight plate. Particularly preferably, the longitudinal gap features a visual marker that emphasizes the closing area and makes it more easily identifiable, thus simplifying operation and increasing safety.

[0043] Preferably, the handle 01 has a lifting lug 12. The lifting lug 12 is arranged transversely to the direction of extension of the handle 01 and is designed to prevent the gripping hand from slipping within the one-handed gripping area of ​​the handle 01. Advantageously, this makes the weight plate easy to handle even with sweaty hands, and the risk of injury from the gripping hand slipping is further minimized. -08-2024-39000001-Hauptpost-0020 07-08-2024-38000001-HauPtPÖSt-0020 PCT / DE2024 / 000066

[0044] RENZ-CPL-PCT Page 8 of 27

[0045] Preferably, the handle 01 is hinged to the weight plate on one side of a gripping area that can be gripped with one hand. On the opposite side of the gripping area, the handle 01 has a grip guard 23, wherein the grip guard 23 is designed as a projecting slide rail that extends into a cavity of the weight plate. The slide rail, in turn, limits the gripping area of ​​the handle 01 that can be gripped with one hand in both the open and closed positions and prevents the gripping hand from slipping completely off the handle.

[0046] Preferably, the weight plate has at least one pad 11 which is positioned at the end of the handle 01 with an ergonomically rounded gap 13. These limiting pads 11 also prevent the fingers of a gripping hand from being directly crushed or sheared if the hand slips or slides along the handle over a larger area. Even for untrained users, this reliably eliminates the risk of injury in case of accidental slippage.

[0047] Preferably, the handle for adjusting the elastic clamping force comprises at least one component selected from the group consisting of an adjustable gripper jaw 19, an interchangeable concave elastomer block 24, and an interchangeable round cord rubber. A gripper jaw 19, whose position is adjustable via a knurled screw located near the gripping area, allows the gripping mechanism to be closed and released quickly, combined with tightening or loosening the gripping force. Particularly in fitness studios, this allows weight plates to be pre-adjusted quickly and to achieve a uniform clamping force on all barbells of the same type. Tool-free interchangeable elastomer blocks 24 or round cord rubbers—especially advantageous in color-coded form—allow private users to easily and directly adjust the clamping force as part of complete equipment sets for home use.

[0048] Weight plate according to one of the preceding claims, wherein -08-2024-39000001-Main Post-0021 07-08-2024—33000Ü01-Hau$H Pcst-0021 PCT7DE2024 / 000066

[0049] RENZ-CPL-PCT, page 9 of 27, indicates that the toggle clamp mechanism has axles which include axle bushings 17 and flanged bushings 18. Axle bushings 17 and flanged bushings 18 prevent direct abrasion of the axles against the outer components of the weight plate; the axle bushings 17 and flanged bushings 18, fixed via housing screws or bolts and made of friction-bearing metal alloys, thus improve the durability of the weight plate and provide repairability in the case of screw connections.

[0050] Preferably, the toggle clamping mechanism comprises at least one coupling assembly 21, which is arranged to provide additional axes and lever travel for actuated elements of the weight plate. Lever forces for individual functions can be specified and adjusted via coupling assemblies; advantageously, additional mechanical functions such as visual indication of an effective locking mechanism, an acoustic bell signal when closing and / or opening, and closing and opening of external shields can be integrated.

[0051] Preferably, the weight plate has a display unit 25. This display unit 25 can show values ​​from a training data collection. Display units are generally known in the sports field. Suitable and advantageous display units and their functions can be found in the illustrative documents US4,842,266A, JP 10116038A, JP 2002122891A, JP2002244620A, EP1171864B1, US2003 / 0016590A, KR102003071150A, and US2005 / 0209887A. Advantageously, sensors allow at least the determination of the number of training repetitions in the sense of lifts to predetermined heights and / or predefined speeds.Particularly preferred is the display unit being interchangeable or fixable to the weight plate as a thin assembly via magnetic holding force and connectable to mobile phones and / or mobile PDAs via wireless communication; advantageously, individual training programs and / or group programs as well as events can be carried out in different locations and / or synchronized with each other, with each user having one tailored to their -08-2024-39000001-Hauptpost-0022 07-08-2024“33000001-HauPtPost-ÜÜ22 PCT / DE2024 / 000066.

[0052] RENZ-CPL-PCT Page 10 of 27 can use a display unit aligned with personal data and capabilities.

[0053] Further advantages arise from the exemplary embodiments. The features and advantages described above and the following exemplary embodiments are not to be considered limiting combinations of features unless explicitly described as such. Additional advantageous features and combinations of features, as explained in the prior art and the documents cited therein, as well as in the description and established in the scientific field, can be implemented within the scope of the independent claims in the claimed subject matter, either individually or in different combinations, without departing from the scope of the invention.

[0054] BRIEF DESCRIPTION OF THE FIGURES

[0055] The figures, abbreviated as Fig., illustrate, using schematic diagrams, ....

[0056] Fig. 1: advantageous embodiment of a weight plate according to the invention in open and closed state in wireframe and 3D view;

[0057] Fig. 2: 3D detail view of the mechanism arranged inside the weight plate according to Figure 1 with enlarged view of a sub-assembly with detachable screw connection (inset);

[0058] Fig. 3: 3D view of a cost-effective simplified design with cast shell and screw-in components;

[0059] Fig. 4: Wire mesh and 3D view of an advantageous embodiment with quick-release lever with force amplification and locking function

[0060] Fig. 5: Wire mesh view of an advantageous embodiment -08-2024-39000001-Main Post Office-0023 07-08“2024-38000ü01"HauPiPBst-0023 PCT / DE2024 / 000066

[0061] RENZ-CPL-PCT Page 11 of 27 of a weight plate with coupling assembly 21 and 3D partial view of internal subassemblies, which are connected to each other via the coupling assembly 21 via fixed and movable axes;

[0062] Fig. 6: Wire mesh view of an advantageous embodiment of a weight plate with handle protection 23 and wire mesh partial view of the quick-release lever arranged in the handle area with force amplification and locking function 22;

[0063] Fig. 7: 3D view of an advantageous weight plate for industrial use composed of many uniform components with counterweights and replaceable concave elastomer blocks 24;

[0064] Fig. 8: Wire mesh detail view of the interaction of interconnected components of a quick-release lever with force amplification and locking function 22;

[0065] Fig. 9: 3D view of an advantageous embodiment of a weight plate according to the invention with display unit 25.

[0066] Fig. 10: 3D view of two basic components of a holding magazine, wireframe view of a compound holding magazine with inserted weight plate comprising handle 01, first counterweight 09, second counterweight 10 and replaceable concave elastomer blocks 24, and 3D view of an advantageous embodiment of an assembled holding magazine for six weight plates according to the invention with handle 01, first counterweight 09, second counterweight 10 with three inserted weight plates and three unoccupied magazine slots.

[0067] Fig. 11: Four advantageous weight plates according to the invention as shown in Fig. 7, mounted on a conventional barbell bar, each with handle 01, first counterweight 09, second counterweight 10 and radial end 15. -08-2024-39000001-Hauptpost-0024 07-08-2024-38000001-HauPtPost-0024 PCT / DE2024 / 000066

[0068] RENZ-CPL-PCT Page 12 of 27

[0069] DETAILED EXPLANATION OF THE INVENTION USING EXAMPLES OF EXECUTION

[0070] In an advantageous embodiment, a weight plate according to the invention has a C-shaped base with a longitudinal slit and a handle 01, which, in an open state, can be mounted perpendicularly onto a horizontally arranged barbell. Mounted on the barbell, it can be moved via the handle 01 into a closed state, where it is positively locked to the barbell. The weight plate has a toggle clamp mechanism with at least one handle for adjusting the elastic clamping force. In the closed state, the center of gravity is substantially central. Furthermore, the toggle clamp mechanism is coupled to a slit lock. The slit lock has a radial end 15, wherein the radial end 15, in the closed state, forms a circular outer edge of the weight plate that continuously closes. The toggle clamp mechanism also has a quick-release lever with force amplification and a locking function 22, which:

[0071] - is located in the grip area of ​​handle 01;

[0072] - a lever mechanism with an extended hand lever with a terminal, closing thickening, wherein furthermore

[0073] - the lever mechanism has a C-shaped locking tooth that engages a pin when closed and

[0074] - the lever mechanism has an opening tooth that can be rotated against elastic spring force and releases the closed state; the weight plate comprises at least one first counterweight 09 and one second counterweight 10, the counterweights being detachably connected to the weight plate; the gap closure has a multi-part assembly that pivots laterally during opening, which, as a gap closure 14, completely closes the remaining longitudinal gap of the weight plate when the barbell is fixed in the closed state; -08-2024-39000001-Hauptpost-0025 07“08-2024-38000001-HaUPtPosi-002S PCT / DE2024 / 000066

[0075] RENZ-CPL-PCT Page 13 of 27 the handle 01 has a handle lifting lug 12, wherein the handle lifting lug 12 is arranged transversely to the extension direction of the handle 01 and is designed to secure a one-hand gripping area of ​​the handle 01 against slippage of a gripping hand; at least one pad 11 is arranged to limit the end of the handle 01 with an ergonomically rounded gap 13; the handle for adjusting the elastic fixing force comprises at least one tool-free replaceable component, selected from the group consisting of replaceable concave elastomer block 24, replaceable round cord rubber; wherein the toggle clamp mechanism further comprises a first fixed axis 02, a first movable axis 03, a second movable axis 04, a second fixed axis 05 and is connected via the second fixed axis 05 to the gap clasp comprising a third movable axis 06, a fourth movable axis 07 and a third fixed axis 08;the weight plate has a housing 16, preferably a cast housing, which encloses the toggle clamping mechanism and the gap clasp.;

[0076] In a further, advantageous embodiment, a weight plate according to the invention, as illustrated in Figure 1, has a handle 01 which is connected via a first, fixed axis 02 to several fixed and movable axes. Here, a first movable axis 03, a second movable axis 04, and a second fixed axis 05 connect the pivoting mechanisms necessary for the mechanism of a toggle clamp, in which two opposing, adjustable gripping jaws, each with an interchangeable elastomer block 24, enable symmetrical fixation of an insertable barbell.The interchangeable concave elastomer block 24 is advantageously manufactured in one piece and features a continuous spatial shape that combines cord-like projections with a concave fixing recess; this allows the elastomer block to be replaced or exchanged without tools in a single operation, despite being fixed via three spaced, interlocking locking structures. Color-coded -08-2024-39000001-Hauptpost-0026 07-0Ö-2Ü24-3Süüm 01-HauiitPQ5i-0Ü26 PCT / DE2024 / 000066.

[0077] RENZ-CPL-PCT Page 14 of 27

[0078] Elastomer blocks of varying hardness and / or thickness allow for easy and direct adjustment of the clamping force. Furthermore, this embodiment features two opposing, adjustable gripping jaws 19, enabling a secure clamping force over a wide range of barbell sizes, even for slightly different barbells.

[0079] A third movable axis 06, a fourth movable axis 07, and a third fixed axis 08 provide the pivot points of a multi-part gap closure, which is directly articulated to the mechanism connected to the handle 01 via the third movable axis 06 and is operated in conjunction with the opening and closing. When closing an attached, open weight plate, a radial end cap 15 formed on an articulated assembly of the gap closure pivots out; when the closure engages, the components of the gap closure completely cover the previously open gap through which the weight plate could be released in the open state, and the radial end cap 15 is arranged to provide a continuous outer edge of the weight plate.The first counterweight 09 and second counterweight 10 are arranged laterally and flush with the outer edge of the weight plate; the respective mass of the counterweights is designed for a central center of gravity when closed with the adjustable gripping jaws 19 extended symmetrically. By opening the closure, the handle 01 can be swung out while simultaneously pivoting the gap lock and releasing the gap, thus returning the weight plate from the closed to the open position. When the open weight plate is then lifted, the gripping hand rests on a pad 11, which is mounted on a handle lifting lug 12 and provides a secure partial grip for the lifting hand via an ergonomically rounded section 13.Figure 2 further illustrates in 3D detail view the mechanism arranged inside the weight plate with an enlarged view of a sub-assembly with a detachable screw connection (inset); here the fixed axles are formed via axle bushings 17 and flange bushings 18, wherein the axle bushings -08-2024-39000001-Hauptpost-0027 07“08=2024“330ÜOOÜl~HauP4Pösi-'Ü027 PCT / DE2024 / 000066.

[0080] RENZ-CPL-PCT Page 15 of 27

[0081] The outer plates of the weight plate are each fixed by a screw or bridge connection (not shown) that connects them. The axle bushings 17 and flange bushings 18 allow for the separate definition of the materials rubbing and sliding against each other. This ensures precise and durable functionality of the mechanism, even with inexpensive, roughly manufactured outer plates where the flange bushings might tilt or seize on the outside, thanks to the set friction-bearing function of the axle bushings 17 on the flange bushings 18. The movable axles are either manufactured uniformly from components of the same metals or each comprise at least two washers that adjust the friction-bearing properties of the sliding surfaces in the same direction. The handle 01 and radial end cap 15 can be easily and almost wear-free pivoted in and out synchronously via the axles and joints provided in this way.Furthermore, the adjustable gripper jaws 19 are adjustable via adjusting screws that can be used in the closed position; to set the gripping force, a user will first completely retract the gripper jaws, place the weight plate on top and close, retract the gripper jaws until they rest against the enclosed barbell and then, with the weight plate open, tighten at least one of the two adjusting screws by a normal, additional amount to ensure a normal fixation of the weight plate on the respective barbell.

[0082] A simplified, cost-effective design with a cast shell and screw-in components, as shown in Figure 3, provides for an outer enclosing shell, which can be manufactured by casting, injection molding, or injection molding and, if necessary, subsequent sintering. Against this background, the present document also discloses advantageous weight plates according to the invention, which are at least partially, and for particularly lightweight versions almost entirely, made of non-metallic materials. In this cost-effective design, the housing 16 is manufactured as an enclosing unit; components and assemblies such as the first counterweight 09, the second counterweight 10, or fixed axles are connected via -08-2024-39000001-Hauptpost-0028 07-08-2024-33000001-HauPt 51-0028 PCT / DE2024 / 000066

[0083] RENZ-CPL-PCT Page 16 of 27 The simplified representation of the screws allows for fixing; in a particularly cost-effective design, the cast housing consists of two mirror-symmetrical halves which can be connected to each other via screws, permanently allowing the complete opening of the housing for repairs in cases of severe misuse. A replaceable concave elastomer block 24 can be fixed via an internally enclosed bracket manufactured as part of the surrounding housing.

[0084] In a further, advantageous embodiment according to Figure 4, a weight plate according to the invention has a handle 01 with a quick-release lever featuring force amplification and a locking function 22; the quick-release lever 22 is integral and, when the handle 01 is gripped around a closed weight plate, is arranged to be rotated against a spring force via a fixed axis. The thumb profile, spring force, and lever travel are mutually adjustable and can be individually set and manufactured to an optimum for users; user-specific designs for regular individual use by experienced users can thus be provided.

[0085] In a further, advantageous embodiment, a weight plate according to the invention, as shown in Figure 5, has a coupling assembly 21; the coupling assembly 21 connects internal sub-assemblies via fixed and movable axes and allows lever forces to be varied over a wider range and additional functions, which can be triggered synchronously with opening and / or closing, to be mechanically planned and integrated, analogous to the radial end cap 15. Thus, as illustrated here, a handle 01 with a quick-release lever 20 can be brought into interaction with an additional stop and locking bar via the coupling assembly 21: In the closed state, a bar through the coupling assembly 21 secures the mechanism against further rotation beyond a locking point and simultaneously serves as an interlocking structure for a spring-loaded locking mechanism. -08-2024-39000001-Main Post Office-0029 0 / “08~2024“33000001“Main Post Office ““0028 PCT / DE2024 / 000066

[0086] RENZ-CPL-PCT Page 17 of 27

[0087] In a further, advantageous embodiment according to Figure 6, a weight plate according to the invention has a handle guard 23 and a quick-release lever with force amplification and a locking function 22 arranged in the handle area; the quick-release lever with force amplification and locking function can be gripped more easily via an extended handle with a thickened end and operated with one hand. Assuming a fully open state according to Inset A, operation of the quick-release lever 22 causes a rear-engaging clasp to be pivoted out of the surrounding position according to Inset B with increased leverage.In the advantageous variant illustrated here with first counterweight 09, second counterweight 10, two interchangeable elastomer blocks 24 and a grip protector 23 and a radial end cap 15, a transition from open to closed state and vice versa can be brought about safely and repeatedly even by less strong or more experienced users, whereby the grip area, which is completely and permanently enclosed by the grip protector, also reliably prevents a gripping and holding hand from slipping.

[0088] In a further advantageous embodiment according to Figure 7, an advantageous weight plate for industrial use, composed of many uniform components, has counterweights and replaceable concave elastomer blocks 24; outer plates with preferably mirror-symmetrically arranged threads on the one hand and bores with countersinks on both sides on the other hand allow for easy and error-free combination; screw connections always enable easy and direct repair, reuse, and replacement of individual or wear components; consistently single-piece components made of only one material ensure simple and direct recyclability. A quick-release lever with force amplification offers a high level of user comfort and enables even inexperienced or less strong users to safely and regularly exchange, close, and open the weight plate.First counterweight 09 and second counterweight 10 (not -08-2024-39000001-Main Post-0030 07”08“2024-33000001-Main Post Office. as t-0030 PCT / DE2024 / 000066

[0089] RENZ-CPL-PCT Page 18 of 27 visible; illustrated by dotted line) ensure a central center of gravity, which reliably prevents unwanted rolling when quickly lowering the weight. Furthermore, a radial end cap 15 provides a continuous outer edge when closed and additionally improves safety during use. When closed, replaceable concave elastomer blocks 24, arranged on both sides of a grippable barbell, allow for tool-free, manual renewal and / or adjustment of the holding force. These one-piece, color-coded elastomer blocks provide five different holding forces (AA, AB, AC, BB, BC, and CC) across three different hardness grades A to C.The detachably and separably connected components enable simplified, cost-effective mass production of an ecologically superior design. This design simplifies training for the user and reliably prevents injuries caused by incorrect posture or misuse, resulting in significant financial advantages, particularly in commercial applications such as fitness studios and fitness programs. Figure 11 illustrates its use on a conventional barbell: Four advantageous weight plates according to the invention are evenly distributed on a standard barbell. The handle 01, the first counterweight 09, the second counterweight 10, and, in the case of the pair of weight plates furthest from the viewer, the radial end 15 are highlighted by reference numerals. The weight plates can be easily and directly removed / attached with one hand using the handle 01.

[0090] As shown in Figure 8, the interaction of the interconnected components of a quick-release lever with force amplification and locking function 22 can be illustrated by arrows in a wireframe detail view. In the illustrated version, the handle 01 includes a handle guard 23, which is arranged in the outerly enclosing weight plate via a central, closed elongated hole surrounding a bolt or screw of the weight plate. The quick-release lever with force amplification and locking function 22 is operated according to the arrow shown -08-2024-39000001-Hauptpost-0031 07-08-2024”33000001-HauPtP□st-0031 PCT / DE2024 / 000066

[0091] RENZ-CPL-PCT Page 19 of 27

[0092] (viewed from left to right, the first arrow) encompasses and is pulled towards the handle 01, so that simultaneously a) a rearward-engaging segment is swung out via a fixed pivot axis and the engagement is released (viewed from left to right, illustrated by the second arrow) and b) a projecting element is placed against a further bolt via the fixed pivot axis and, with further actuation of the quick-release lever 22, the handle 01 is lifted over the further bolt serving as a counter-support (viewed from left to right, illustrated by the third arrow) and the lock is released.

[0093] As shown in Figure 9, a further advantageous embodiment of a weight plate according to the invention comprises a display unit 25, interchangeable concave elastomer blocks 24, and a radial end cap 15. The weight plate, illustrated in its closed state, has a preferably detachably integrated display unit 25, which displays at least time intervals (time), repetitions (reps), training rounds (round), and the current participant (player) of a training program; advantageously, several display units 25 can be synchronized; with synchronized, detachable display units, the current training progress and score can be displayed both internally for the current user and externally for the entire training group; force and impulse sensors can advantageously record the precision and quality of use and display it live in the sense of a game-like competition;particularly preferred in parallel competitions of several users in a training group, who compete against each other simultaneously with several devices, whereby display units synchronized to each individual user exchange data with a central training program via radio signal;

[0094] According to Figure 10, a modularly expandable holding magazine for weight plates according to the invention can be assembled from two basic components, viewed from top left to bottom right in the first 3D view; a first circular segment basic component with -08-2024-39000001-Hauptpost-0032 07-08-2024=38000001=HauPiPost=0032 PCT / DE2024 / 000066

[0095] RENZ-CPL-PCT Page 20 of 27 A first, smooth base component can be connected to a second, concave base component with a central support rib and smooth base surface via synchronously positioned bores and a suitable connecting rod. Advantageously, the base components are made of an impact-resistant, durable, fully colored thermoplastic, particularly preferably food-grade polyethylene. Six first base components can be alternately combined with five second base components via the indicated connecting channels to form a magazine for five weight plates according to the invention.The wireframe view of Figure 10 illustrates the position of an open weight plate according to the invention in a composite holding magazine; with seven first basic components and six second basic components, the holding magazine for six weight plates, illustrated in 3D view with three inserted weight plates, comprising handle 01, first counterweight 09, second counterweight 10 and interchangeable concave elastomer blocks 24, can be assembled; three magazine positions of the magazine holder are not occupied in the illustrated version.Advantageously, the holding magazine illustrated here is used both as a holder and as shipping packaging made of fully dyed polyethylene; fully dyed polyethylene is tough, impact-resistant, does not show scratches visually, does not scratch inserted weight plates, dampens forces even with strong impulses and can be almost completely recycled in a closed material flow via established recycling cycles; analogous to a deposit system, holding magazines that can be assembled and disassembled without tools can thus accompany the weight plates according to the invention in an environmentally friendly and durable manner throughout the entire value chain and reduce the environmental burden.

[0096] INDUSTRIAL APPLICABILITY

[0097] Weight plates that can be fixed with high force are a disadvantage, as are...

[0098] Weight plates with non-radial, dangerous outer edge -08-2024-39000001-Main Post-0033 07-Ü8-2Ü24"38000001 “Main Post-0033 PCT / DE2024 / 000066

[0099] RENZ-CPL-PCT Page 21 of 27 unpopular.

[0100] The task is to overcome the disadvantages.

[0101] The solution involves a weight plate with a handle 01, which can be placed vertically onto a horizontally positioned barbell in the open position and, once placed on the barbell, can be closed and securely fixed to the barbell via the handle 01. The weight plate features an easily releasable toggle clamp mechanism with at least one tool-free replaceable concave elastomer block 24 as a handle for adjusting the elastic clamping force. Counterweights 9 and 10 ensure a central center of gravity. A radial end cap 15 ensures a circular outer edge of the weight plate when closed.

[0102] Advantageously, this provides for the first time a weight plate that can be operated safely and conveniently with one hand, which is particularly useful in commercial and professional training studios with increased customer satisfaction.

[0103] -08-2024-39000001-Main Post Office-0034 07-08-2024'-380Ü0ÜÜ1-Main Plague-0034 PCT / DE2024 / 000066

[0104] RENZ-CPL-PCT Page 22 of 27

[0105] REFERENCE MARK LIST DESCRIPTION

[0106] 01 Handle

[0107] 02 first fixed axis

[0108] 03 first movable axis

[0109] 04 second movable axis

[0110] 05 second fixed axis

[0111] 06 third movable axis

[0112] 07 fourth movable axis

[0113] 08 third fixed axis

[0114] 09 first counterweight

[0115] 10 second counterweight

[0116] 11 cushions

[0117] 12 Handle lifting nose

[0118] 13 ergonomically rounded section

[0119] 14 Gap closure

[0120] 15 radial termination

[0121] 16 Housings, preferably cast housings

[0122] 17 axle bushings

[0123] 18 Flangbuchse

[0124] 19 adjustable gripper jaws

[0125] 20 quick-release levers

[0126] 21 Coupling assembly

[0127] 22 quick-release levers with force amplification and locking function

[0128] 23 Handle protection

[0129] 24 interchangeable concave elastomer blocks

[0130] 25 Display Unit

Claims

-08-2024-39000001-Main Post Office-0036 07-Ü8-2024-380Ü00Ü1-Main Post Office-tPD51-0038 PCT / DE2024 / 000066 RENZ-CPL-PCT Page 23 of 27 REQUIREMENTS 1. A weight plate with a C-shaped base, a longitudinal slit, and a handle (01), which in an open state can be mounted vertically onto a horizontally arranged barbell and, when mounted, can be moved via the handle (01) into a closed state, which is force-fitted to the barbell, characterized in that the weight plate has a toggle clamping mechanism with at least one handle for adjusting the elastic clamping force; the weight plate has a substantially central center of gravity in the closed state; the toggle clamping mechanism is coupled with a slit closure and the slit closure has a radial end (15), wherein the radial end (15) in the closed state forms a continuously closing circular outer edge of the weight plate.

2. Weight plate according to the preceding claim, characterized in that the toggle clamp mechanism comprises a quick-release lever (20) which is arranged in the grip area of ​​the handle (01) and enables the closed state to be released with less force via a lever mechanism.

3. Weight plate according to claim 1, characterized in that the toggle clamp mechanism has a quick-release lever with force amplification and closing function (22) which: - is located in the grip area of ​​the handle (01); - a lever mechanism with an extended hand lever with a terminal, closing thickening, wherein furthermore - the lever mechanism has a C-shaped locking tooth that engages a pin when closed and - the lever mechanism has an opening tooth that can be rotated against elastic spring force, releasing the closed state.

4. Weight plate according to one of the preceding claims, characterized in that the weight plate comprises at least a first counterweight (09) and a second counterweight (10), wherein the counterweights are detachably connected to the weight plate. -08-2024-39000001-Main Post Office-0037 07-08-2024-33000001-Main Post Office-0037 PCT / DE2024 / 000066 RENZ-CPL-PCT Page 24 of 27 5. Weight plate according to one of the preceding claims, characterized in that the gap closure has a multi-part assembly which pivots outwards laterally during opening, which is arranged as a gap closure (14) in the closed state with fixed barbell bar completely closing the remaining longitudinal gap of the weight plate.

6. Weight plate according to one of the preceding claims, characterized in that the handle (01) has a handle lifting lug (12), wherein the handle lifting lug (12) is arranged transversely to the extension direction of the handle (01) and is designed to secure a one-hand gripping area of ​​the handle (01) against slipping of a gripping hand.

7. Weight plate according to one of claims 1 to 5, characterized in that the handle (01) is hinged to the weight plate on one side of a one-hand gripping area and has a handle guard (23) on the opposite side of the gripping area, wherein the handle guard (23) is designed as a projecting slide rail that extends into a cavity of the weight plate, wherein the slide rail is designed to limit the one-hand gripping area of ​​the handle (01) in both the open and closed states and to prevent a gripping hand from slipping off.

8. Weight plate according to one of the preceding claims, characterized in that at least one pad (11) is arranged to limit the end of the handle (01) with an ergonomically rounded distance (13).

9. Weight plate according to one of the preceding claims, characterized in that the handle for adjusting the elastic fixing force comprises at least one component, that at least one component is selected from the group consisting of adjustable gripper jaw (19), replaceable concave elastomer block (24), replaceable round cord rubber.

10. Weight plate according to claim 1, characterized in that the weight plate has a toggle clamping mechanism with at least one -08-2024-39000001-Main Post Office-0038 07-08-2024”33ÜOOOO1-Main Post Office “0038 PCT / DE2024 / 000066 RENZ-CPL-PCT Page 25 of 27 has a handle for adjusting the elastic clamping force; the weight plate has a substantially central center of gravity in the closed state; the toggle clamp mechanism is coupled with a gap closure and the gap closure has a radial end (15), wherein the radial end (15) forms a continuously closing circular outer edge of the weight plate in the closed state; the toggle clamp mechanism has a quick-release lever with force amplification and closing function (22), which: - is located in the grip area of ​​the handle (01); - a lever mechanism with an extended hand lever with a terminal, closing thickening, wherein furthermore - the lever mechanism has a C-shaped locking tooth that engages a pin when closed and - the lever mechanism has an opening tooth that can be rotated against elastic spring force and releases the closed state; the weight plate comprises at least one first counterweight (09) and one second counterweight (10), wherein the counterweights are detachably connected to the weight plate; the gap closure has a multi-part assembly that pivots laterally during opening, which, as a gap closure (14), completely closes the remaining longitudinal gap of the weight plate when the barbell is fixed in the closed state; the handle (01) has a grip lifting lug (12), wherein the grip lifting lug (12) is arranged transversely to the extension direction of the handle (01) and is designed to secure a one-hand gripping area of ​​the handle (01) against slippage of a gripping hand; at least one pad (11) is arranged to limit the end of the handle (01) with an ergonomically rounded gap (13);the handle for adjusting the elastic fixing force comprises at least one tool-free replaceable component selected from the group consisting of replaceable concave elastomer block (24), replaceable round cord rubber; wherein the toggle clamp mechanism further comprises a first fixed axis (02), a first movable axis (03), a second movable axis (04), a second fixed axis (05) and, via the second fixed axis (05) with the gap clasp, comprising a third movable axis (06), a fourth movable axis (07) and a third fixed axis (08); -08-2024-39000001-Main Post Office-0039 07-08-2024-38000001-Main Post Office Pest-0038 PCT / DE2024 / 000066 RENZ-CPL-PCT page 26 of 27 is connected; the weight plate has a housing (16), preferably a cast housing, which encloses the toggle clamping mechanism and the gap clasp.

11. Weight plate according to one of the preceding claims, characterized in that the toggle clamp mechanism has axles which comprise axle bushings (17) and flange bushings (18).

12. Weight plate according to one of the preceding claims, characterized in that the toggle clamp mechanism comprises a coupling assembly (21) which is arranged to provide additional axes and lever paths for actuable elements of the weight plate.

13. Weight plate according to one of the preceding claims, characterized in that the weight plate has a display unit (25) wherein values ​​of a training value recording can be displayed via the display unit (25).

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