Exercise device and method

Abstract

An exercise device 10 includes a weight bar 20, an arm support 40, a handle 45, and an armband connector 100. The weight bar 20 has a distal weight end 25 and a proximal support end 30. The arm support 40 is disposed at the support end 30 and has a fixing portion 43. The handle 45 is adjacent to the arm support 40. The armband connector 100 is adapted to securely attach to the arm 4 of a user 3 connected to the exercise device 10. The arm support 40 has sufficient longitudinal dimensions to provide support to the user 3's forearm 4 and adjacent wrist 7, limiting angular movement between them. The fixing portion 43 is provided for connection to the armband connector 100. The handle 45 is provided for gripping by the user 3's fingers 5 and thumb 6. The exercise device 10 is suitable for training and enhancing and / or improving overall strength, particularly upper body strength. This device 10 is particularly suitable for multidisciplinary and compound training.

Description

Technical Field

[0001] This invention relates to an exercise device for training and building and / or improving overall strength, particularly upper body strength. The invention also relates to methods of using the exercise device. This device is particularly suitable for multidisciplinary and complex training.

[0002] The device of the present invention is essentially an improvement upon the invention disclosed by the same applicant in International Patent Publication WO 2022 / 201132 (hereinafter referred to as the "prior invention"), the entire contents of which are incorporated herein by reference.

[0003] Throughout this specification, unless the context otherwise requires, the term “comprise” or its variations (such as “comprises” or “comprising”) shall be understood to mean that an integer or a set of integers is included, but does not exclude any other integer or any other set of integers. Background Technology

[0004] The following discussion of the background art is intended only to facilitate understanding of the present invention. It should be understood that this discussion does not constitute an admission or endorsement that any material mentioned is common general knowledge in the art as of the priority date of this application.

[0005] Exercise devices for improving overall physical fitness, particularly upper body fitness, are well known in the art and encompass a variety of device types. These devices may include multi-component weightlifting equipment commonly used in fitness centers, which typically employ counterweights and pulley mechanisms.

[0006] Simpler equipment, such as weight training devices, is also commonly used in the fitness industry. Barbells, dumbbells, and weighted balls (such as medicine balls and weighted balls) can all be used to train specific muscles or muscle groups and improve upper body strength in various ways.

[0007] Most weight-bearing devices are of the fixed weight type, especially barbells, dumbbells, and weighted training balls, meaning their weight is usually uniform (although some are adjustable) and generally adapted to specific training programs.

[0008] Alternative equipment includes more aerobic-focused workout gear, such as battle ropes. Battle ropes, available as single or double ropes, are heavy enough to provide aerobic training while also offering other benefits such as improved upper body strength, especially noticeable during high-intensity interval training (HIIT). These battle ropes can be fixed to a wall or the ground or held by someone else. The training principle involves moving the rope in a wave-like motion, which simultaneously improves upper and lower body strength and cardiovascular health.

[0009] However, the aforementioned devices, especially battle ropes used for HIIT training, have many drawbacks, including: requiring a large space during training, needing anchor points to secure one end, being difficult to operate, generating significant noise, requiring specialized instruction, and being expensive. Furthermore, other alternative devices for HIIT are not as effective as battle ropes.

[0010] Prior inventions disclosed several early prototype devices that tested different arm support components in order to replace battle ropes for HIIT training, ultimately leading to the invention claimed in this application.

[0011] The prior art also has the following problems: it is difficult to achieve the appropriate curvature of the device and it is impossible to determine the reasonable position of the pivot point.

[0012] In the prior invention, the method for setting the counterweight at the far end of the device was very rudimentary.

[0013] The purpose of certain embodiments of the present invention is to provide an improved exercise device to achieve the beneficial effects of improving physical explosiveness, strength and fitness, preferably by improving cardiovascular health through HIIT, while overcoming some of the shortcomings of existing exercise devices and prior inventions. Summary of the Invention

[0014] Some embodiments of the present invention relate to a first aspect, providing a training device comprising: The rod has a distal counterweight end and a proximal support end; The proximal support end includes: (i) An arm support portion, disposed at the support end of the rod body, and having a fixing portion; and (ii) A handle portion, located in the middle of the rod body, and axially aligned with the following components: (a) The arm support located near the proximal end of the handle; and (b) The distal counterweight located at the far end of the handle; in: (1) The arm support has sufficient longitudinal dimensions to provide support for the user's forearm and wrist; (2) A fixing part is provided for connecting to the armband connector to securely bind the user's arm to the arm support part; and (3) The handle is configured as follows: (a) Designed relative to the armrest for the user's hand, fingers, and thumb to grip; and (b) Continuous with the arm support, so that the arm, wrist and hand conform to the contours of the arm support and handle and lock into them to limit the angular movement between the user's arm and wrist.

[0015] Furthermore, the distal counterweight end can be bent relative to the arm support and handle to create resistance to the arm when torque is applied during rapid reciprocating motion of the hand.

[0016] Preferably, the distal counterweight end bends with the pivot point near the distal end of the handle as the fulcrum.

[0017] Preferably, the proximal support end is kept rigid relative to the distal counterweight end by a bracket structure to define the position of the pivot point.

[0018] Preferably, the support structure is formed of a denser material core disposed centrally within the rod body relative to the annular material body surrounding the support structure; and extends from the proximal support end to terminate at the distal end toward the handle portion, so as to position the pivot point at a position that reduces the bending of the user's hand when gripping the rod body during use.

[0019] Preferably, the proximal support end has a middle portion located at the connection between the arm support portion and the handle portion; the fixing portion is positioned close to the middle portion at an optimal distance to position the pivot point of the user's wrist at a position, so that when the fingers grip the handle portion, the arm, wrist and hand conform to the contour of the middle portion and are bound together, thereby preventing angular movement between them during rapid reciprocating movements of the hand.

[0020] By adopting this setting, the user's hand can comfortably grip the bar while the wrist remains locked relative to the forearm, thereby reducing the force and movement on the wrist when moving the bar.

[0021] In a preferred embodiment, the fixing part includes a groove disposed in the arm support part, and the groove is provided with a sliding buckle.

[0022] Preferably, the sliding buckle is a three-way sliding buckle, which has a pair of slots and a rod, with the webbing, as part of the armband connector, passing through the slots and the rod.

[0023] In this way, the arm support can accommodate the webbing of the arm connector, thereby reliably securing the support end of the stick to the user's arm.

[0024] Preferably, the distal counterweight end of the rod includes: (i) Remote counterweight assembly; (ii) The proximal end of the rod, continuous with and axially aligned with the handle portion; and (iii) A connector, which is fixedly installed at the distal end of the proximal rod and is fixedly or detachably installed on the distal counterweight assembly.

[0025] Preferably, the connector includes: an axial sleeve for fixing the distal end of the proximal rod; and an axial external insertion hole for interconnecting with the distal counterweight assembly.

[0026] Preferably, the distal counterweight assembly includes a cap and one or more counterweights disposed in an internal recess therein.

[0027] Preferably, the rod is about 250 mm to about 1200 mm long; more preferably, up to 900 mm.

[0028] Preferably, the rod is cylindrical with a diameter of 25 mm to 65 mm.

[0029] Preferably, the rod (excluding the detachable counterweight) weighs approximately 500gm to 3kg.

[0030] Preferably, the rod is made of a flexible material with elasticity.

[0031] More preferably, when the user applies torque to the rod by making a rapid reciprocating motion of the hand with the elbow as the axis, the bending range relative to the longitudinal axis of the rod in a stationary state is within about 1 degree to 45 degrees from the pivot point.

[0032] Preferably, the rod can move in multiple directions within its range of motion, and the rod can achieve approximately circular motion.

[0033] Preferably, the handle includes a grip for easy holding of the rod.

[0034] Preferably, the proximal end of the rod has an axial insert at the distal end, which can be embedded in the axial sleeve to form an insert-sleeve connection.

[0035] Preferably, the connector has an axially outward insertion hole that connects to the counterweight assembly to secure one or more counterweights to the proximal rod.

[0036] In one embodiment, the counterweight assembly is detachable and includes a chamber containing one or more counterweights, the chamber being disposed within a cover; and a sealing end that seals the opening of the cover and encapsulates the chamber and counterweights therein; wherein: (i) The cabin has multiple slots for accommodating disc-shaped counterweights that constitute one or more counterweights; and (ii) The shape of the sealing end is complementary to the shape of the axial external insertion hole of the connector, and can be inserted and reliably locked into the insertion hole.

[0037] In this embodiment, the sealing end is formed as one component of the bayonet-fit structure, and the distal insertion end is formed as another component of the bayonet-fit structure; wherein, after the two components are axially mated and pressed together, they can rotate relative to each other and be axially locked together, thereby interconnecting the counterweight assembly with the proximal rod.

[0038] Alternatively, the sealing end and axial external insertion hole can be selected from the following detachable connection structures, including: snap-locking mechanism, male / female locking mechanism, spring-loaded locking mechanism, threaded screw mechanism and push-type mechanism, to achieve the desired detachable and locking engagement.

[0039] Preferably, the counterweight components in this embodiment can be selected from a set of corresponding but different numbers of counterweights to provide counterweight components of different weights. These counterweight components can be individually replaced to fit the same proximal rod. The individual weight range of these different counterweights is from 25 grams to 1 kilogram. More preferably, 100-gram or 300-gram counterweights are used, and one to four can be selected for combination to obtain different net weights.

[0040] In another embodiment, the cap of the counterweight assembly is fixedly interconnected with the axial external insertion hole of the connector to form a groove inside, in which one or more counterweights are fixedly held.

[0041] In this embodiment, various variations of the counterweight assembly equipped with different counterweight combinations can be provided, wherein the cover is formed with an axial insertion post whose axial dimension is adapted to the outer side surface of the outer counterweight, pressing against the outer side surface to fill the gap caused by the absence of one or more counterweights in the groove.

[0042] Preferably, in this embodiment, the connector has a central protrusion formed in the axial outer insertion hole. The protrusion defines a support surface that is in contact with the inner surface of the inner counterweight to fix one or more counterweights in the groove.

[0043] In any embodiment, preferably, the rod body includes: an inner honeycomb core composed of a pair of longitudinal inner core halves, defining a proximal rod portion defining a proximal support end and a distal counterweight end; a support structure for maintaining the rigidity of the proximal support end; and an outer covering shell that combines the inner honeycomb cores together and connects to the proximal end of the fixing structure to form an integrated portion for connection to the distal counterweight portion.

[0044] Preferably, the scaffold structure is formed by a network of cavities within an internal honeycomb core, with a lower density in the proximal support end.

[0045] Preferably, the support structure consists of an inner longitudinal extension made of solid material and an annular portion with a smaller volume cavity inside the proximal support end; in contrast, the proximal rod portion has a cavity with a larger volume inside.

[0046] Preferably, the additional counterweights are color-coded to facilitate their selection and use.

[0047] Preferably, the exercise device is provided as a pair of rods.

[0048] Other embodiments of the present invention relate to a second aspect, providing a method for manufacturing an exercise device according to any one of the preceding claims, comprising: Using axial positioning pins and axial grooves, two complementary core halves are interlocked and joined together, aligned and forming a honeycomb structure with transverse cavities inside, forming the inner core of the rod. The axial sleeve and proximal end cap of the connector are respectively fitted onto the axial insert of the core half and the axial insert opposite to it; The entire component is compressed and molded by heating, combining the internal honeycomb core half, proximal end cap, and connectors to form an integrated proximal support end and a proximal rod that is chemically bonded to the distal counterweight component.

[0049] Preferably, the method includes: forming an inner core having a support structure having a denser material core disposed centrally within the inner core relative to an annular material body surrounding the support structure; and extending the denser material core from a proximal support end to a distal end terminating at the handle portion of the rod, thereby positioning the pivot point at a position that reduces hand bending when gripping the rod during use after such formation. Attached Figure Description

[0050] The various embodiments and examples of the present invention will be described with reference to the following accompanying drawings. These drawings are merely exemplary and do not constitute a limitation on the scope of this disclosure.

[0051] Figure 1 A schematic diagram illustrating the use of a standard battle rope, which is part of the prior art.

[0052] Figure 2 This is a schematic diagram illustrating the use of a rod instead of a standard battle rope for training, according to a main embodiment of the training device of the present invention.

[0053] Figure 3 This is a front perspective view of the rod body according to a main embodiment of the present invention, wherein the rod body is connected to the armband connector and is in a locked position with the user's arm.

[0054] Figure 4 for Figure 3 The bottom perspective view of the rod shown shows that the arm strap connector is not installed on the arm support.

[0055] Figure 5 for Figure 4 The bottom view of the rod shown.

[0056] Figure 6 for Figure 3 The side view of the bar shown shows the counterweight attached to the distal counterweight end.

[0057] Figure 7 for Figure 6The partial side view of the end of the rod shows that the fixing part of the arm support is located near the middle part relative to the proximal end of the proximal support.

[0058] Figure 8 A perspective view showing the support structure and honeycomb structure of the core half common to all embodiments.

[0059] Figure 9 for Figure 8 Longitudinal sectional view of the lower half of the core.

[0060] Figure 10 For along Figure 5 A longitudinal sectional view of the rod body of the main embodiment of the present invention, taken from section AA.

[0061] Figure 11 is Figure 6 The figure shown is a cross-sectional view of the rod body in a main embodiment of the present invention, wherein: Figure 11A This is a view taken along section AA of the handle portion; Figure 11B This is a view taken along the BB section of the arm support; Figure 11C This is a view taken along the CC section at the far end of the counterweight.

[0062] Figure 12 The front perspective view of a single rod, according to the main embodiment of the preferred embodiment, shows the state of the detachable counterweight assembly removed from the distal end.

[0063] Figure 13A and Figure 13B This is an exploded view of the counterweight assembly in the detachable embodiment, showing its different components: Figure 13A This is a frontal perspective view of the counterweight assembly. Figure 13B This is a rear perspective view of the counterweight assembly in opposition.

[0064] Figure 13C and Figure 13D This is a perspective view of the counterweight assembly in its fully assembled state, where: Figure 13C This is a frontal perspective view; Figure 13D This is a rear perspective view with the view opposite the center.

[0065] Figures 13E to 13H This is a partial longitudinal sectional view of the counterweight end, showing different counterweight combinations and the different stages of disassembly / installation, release / fixation of the counterweight assembly and the proximal rod, wherein: Figure 13E The counterweight assembly for the four-disc counterweight combination is in the installed and locked engagement state with the connector socket; Figure 13F The counterweight assembly for the three-disc counterweight combination is in the installed and locked engagement state with the connector socket; Figure 13G The counterweight assembly for a single-disc counterweight combination is in an installed and locked engagement state with the connector socket; Figure 13H It is a counterweight component consisting of two discs, which is in a state of being detached from the connector socket and fully released after unlocking.

[0066] Figure 14 The following is a side perspective view of a single bar according to another embodiment of the preferred method, showing that the distal end of the exercise device has a fixed weight assembly that can accommodate a heavier weight combination.

[0067] Figure 15 This is a side perspective view similar to Figure 11 but without the outer casing.

[0068] Figure 16 For along Figure 15 A longitudinal sectional view taken from the vertical axial plane shows the structural configuration of the interlocking structure, connectors and counterweight assembly of the core half, viewed from the inside of the connectors towards the inner web.

[0069] Figure 17 for Figure 14 A partial longitudinal sectional perspective view of the proximal end of the rod and the distal end of the counterweight, viewed from the axially outward insertion hole.

[0070] Figure 18 The following is a side perspective view of a single bar according to another embodiment of the preferred method, showing that the distal end of the exercise device has a fixed counterweight assembly that can accommodate a medium weight combination.

[0071] Figure 19 For along Figure 18 The longitudinal sectional view taken from the EE section shows the interlocking structure of the core half, the structural configuration of the connectors and counterweight assembly, and the four-disc counterweight combination.

[0072] Figure 20 For the purpose of combining Figure 18 and Figure 19 Another embodiment of the described best implementation is a partial longitudinal sectional view of the proximal rod and the distal counterweight end.

[0073] Figures 21A to 21C This is a longitudinal sectional view of different embodiments of the connector and counterweight assembly, showing different counterweight combinations, wherein: Figure 21A The overmolded cap is shown, with its axial insert pressing against the outer surface of the three-disc counterweight assembly; Figure 21BThe overmolded cap is shown, with its axial insert pressing against the outer surface of the single-disc counterweight assembly; Figure 21C The diagram shows an overmolded cap with its axial insert pressing against the outer surface of a two-disc counterweight assembly.

[0074] Figure 22 This is an exploded perspective view of the components to be assembled during the construction of the exercise device, according to yet another embodiment of the preferred method. Detailed Implementation

[0075] The following description refers to the preferred embodiment of the present invention and several specific embodiments thereof. It should be noted that in the descriptions of different embodiments, the same reference numerals are used to denote the same or similar features.

[0076] As mentioned above, there are many types of training devices. In the context of this invention, the battle rope is the device with the highest similarity to the bar disclosed herein. The two can be compared and referenced for use in conducting high-intensity interval training.

[0077] Figure 1 The illustration shows a scenario where personnel 3 routinely use battle rope 1. This type of battle rope 1 can be freely placed, meaning it can be placed directly on the ground without being connected to any object, or held by someone else at the non-use end, swinging in a wave-like motion under its own weight. Its drawbacks are: these battle ropes are usually very heavy, prone to shifting during use, and require a large amount of space; even when fixed to a ground or wall support, they can pose a safety hazard to others; they are also noisy during use and inconvenient to operate and store.

[0078] In contrast, the exercise device of the present invention in the following embodiments avoids the above-mentioned drawbacks.

[0079] The best and preferred embodiments of the present invention are as follows: Figure 2 As shown, it can be used to perform with Figure 1 Similar to the training with the battle rope 1. At this time, the user 3 uses a pair of training devices 10 according to the main embodiment to perform exercises similar to... Figure 1 The exercises shown are the same or similar. Using one or more exercise devices 10 in the form of bars eliminates the need for bulky battle ropes, overcoming space requirements and safety concerns. Furthermore, each exercise device 10 in this embodiment can support a wider variety of training programs.

[0080] The accompanying drawings illustrate three types of rods based on the principles of the best and preferred embodiments of the present invention: (i) Figures 3 to 1 The rod shown in Figure 3 uses a detachable counterweight assembly, which includes different combinations of four 100-gram counterweights. (ii) Figures 14 to 17The rod shown employs a fixed counterweight assembly to accommodate heavier counterweights. This assembly comprises different combinations of three 300-gram counterweights; and (iii) Figures 18 to 2 The rod shown in Figure 1 uses a fixed counterweight assembly to accommodate a lower weight of counterweight. This assembly contains different combinations of four 100-gram counterweights.

[0081] Each of the three types of exercise devices 10 typically includes a bar 20, a distal counterweight end 25, a proximal support end 30, and an armband connector 100.

[0082] The proximal support end 30 near the person using the exercise device 10 has an arm support portion 40 and a handle portion 45. The handle portion 45 is located in the middle of the bar body 20 and is axially aligned with the following components: (i) the arm support portion 40 located at the proximal end 45a of the handle portion; and (ii) the distal counterweight end 50 located at the distal end 45b of the handle portion.

[0083] The distal counterweight end 25 has a proximal rod portion 26, a connector 28, and a distal counterweight assembly 50. The proximal rod portion 26 is continuous with and axially aligned with the handle portion 45. The connector 28 is fixedly mounted to the distal end 26a of the proximal rod portion 26. In one embodiment, the connector 28 is releasably mounted to the distal counterweight assembly 50; in other embodiments, the connector 28 is fixedly mounted to the distal counterweight assembly 50.

[0084] The connector 28 is provided with an axial sleeve 28a for fixing the distal end 26a of the proximal rod 26; and an axial external insertion hole 35 for interconnection with the distal counterweight assembly 50. The distal end 26a of the proximal rod 26 has an axial insert 32a that can be inserted into the axial sleeve 28a to form an insert-hole connection.

[0085] like Figures 11A to 11C As shown, the rod 20 is formed from an inner honeycomb core 16 encased within an outer shell 14. Ideally, as... Figure 8 As shown, it includes a pair of longitudinal inner core halves 16a and 16b. The core half 16 is integrally formed to form the body of the proximal support end 30 and the proximal rod 26 of the distal counterweight end 25.

[0086] The honeycomb core 16 includes a grid of cavities 22 with varying volumes in a honeycomb structure to reduce the weight of the rod 20 while maintaining its strength, and defines a support structure 48 that keeps the proximal support end 30 rigid.

[0087] The support structure 48 is formed of a denser core of material disposed centrally within the rod 20 relative to the annular material body surrounding the support structure. This denser core extends from the proximal support end 30 to terminate distally toward the handle portion 45, defining a pivot point so that the distal end 26a of the proximal rod portion 26 can bend about this pivot point with relative movement of the distal counterweight end 25. This pivot point is specifically positioned to reduce bending of the user's hand when gripping the rod.

[0088] In this embodiment, cavities 22 of different patterns are arranged and combined to form an annular material body surrounding the central axial portion of the internal honeycomb core 16, thereby forming a support structure 48. Compared to the proximal rod portion 26 of the core, the cavity arrangement density within the proximal support end 30 of the core 16 is lower. Furthermore, the support structure 48 is composed of an inner longitudinally extending portion made of solid material and an annular portion having cavities 22 with smaller volumes within the proximal support end 30, while the proximal rod portion 26 has a larger volume cavity disposed therein.

[0089] like Figure 8 As shown, the core halves 16 have complementary shapes: the upper core 16a has a series of laterally protruding positioning pins 18a along its central axis; the lower core 16b has a series of corresponding axial grooves 18b. When the two are interlocked, the positioning pins can be embedded in the grooves.

[0090] Furthermore, the upper core 16a is provided with an outer peripheral protrusion 52b, and the lower core 16b is provided with an outer peripheral groove. When the two are interlocked, the protrusion and the groove cooperate with each other in a similar manner.

[0091] The support structure 48 can also be formed in other ways. In another embodiment, the core is made of materials with different hardness grades to increase the material mass around the core in the center of the rod. This method can replace or be used in conjunction with different cavity or unit density pattern structures.

[0092] The distal counterweight assembly 50 includes a cover 44 and one or more counterweights 42 in the form of counterweight discs. An axially outward insertion hole 35 is interconnected with the counterweight assembly 50 to fix the counterweights to the proximal rod 26.

[0093] The following description will use different types of rods to illustrate different embodiments of the counterweight assembly 50 and the connector 28.

[0094] At the proximal support end 30, the arm support portion 40 includes a proximal cap 41 with an end cap 41a for fitting onto the opposing axial insert 32b, and a fixing portion 43 for connection to the armband connector 100 via a webbing 110. The webbing 110, as part of the armband connector 100, cooperates with the arm support portion 40 to securely bind the bar to the arm 4 of the user 3 of the exercise device 10, such as... Figure 2As shown in Figure 11, the handle 45 is specially designed for the user 3's hand, fingers 5, and thumb 6 to hold.

[0095] The arm support 40 has sufficient longitudinal dimensions and is larger than the handle 45 to provide support for the user's arm 4 and adjacent wrist 7. The handle 45 is continuous with the arm support 40 and has a tapered middle portion 47, or in an alternative embodiment a stepped portion, so that the outer peripheral surface of the stick gradually narrows from the arm support 40 to the handle 45. This design allows the arm, wrist, and hand to conform to the contours of the arm support 40 and the handle 45, forming a locking engagement to limit angular movement between the user's arm and wrist, thereby supporting the user's wrist 7 to remain in a proper position and reducing the stress on the wrist when gripping the stick 20.

[0096] With this structure, the user 3 of the exercise device 10 can comfortably hold the bar 20 with their hand, while the wrist 7 and arm 4 remain locked, reducing wrist stress when using the bar.

[0097] The fixing part 43 includes a groove 48 disposed in the arm support part 40, and a sliding buckle 49 is provided in the groove 48. The sliding buckle 49 is a three-way sliding buckle, which has a pair of slots 49A and a rod 49B, and the webbing part 120 of the webbing 110 passes through the slots and the rod.

[0098] The armband connector 100 includes a webbing 110 and a forearm-wrist support 130, the support being molded to fit the overall shape of the outer side of the forearm near the user's wrist. The webbing portion 120, which is part of the webbing 110, has a fastener 140 at its end for securely engaging and binding the support 130 to the outer side of the user's forearm 4 and wrist.

[0099] In this embodiment, the fastener 140 is a snap-lock type and includes a hook-and-loop fastener (Velcro™ type) for tightening and adjustment.

[0100] Furthermore, the webbing portion 120 is adapted to be threaded through the sliding buckle 49, and the end of the webbing is fastened. By tightening the fasteners at the brace 130 on the outside of the user's forearm 4 and wrist 7, the support end of the rod can be reliably bound to the inside of the user's forearm and wrist, thereby clamping the forearm and wrist in a fixed position so that the user can hold the handle portion 45 of the rod 20 with their fingers 5 and thumb 6.

[0101] Therefore, the fixing part 43 is positioned at an optimal distance from the middle part 47, positioning the pivot point of the user's wrist at a certain position, so that the arm, wrist, and hand conform to the contour of the middle part. In this way, when the user's fingers grip the handle, the webbing part can bind the arm, wrist, and hand together, preventing angular movement between them during the user's rapid reciprocating movements of the hand.

[0102] In this embodiment, as Figure 8 and Figure 9 As shown, the distal counterweight assembly 50 is detachable and includes a chamber 48 containing one or more counterweights arranged in the form of counterweight discs 42. The chamber 48 consists of two halves 48a and 48b, with its distal end 48c being a closed end and its proximal end 48d being an open end, which can accommodate different combinations of counterweight discs 42.

[0103] A sealing end 34 is installed on the open end 48d of the hull 48. The sealing end has an outwardly extending hollow rod 52 for insertion into the axial external insertion hole 35 of the connector 38, and a circumferential flange 55 for assembly onto the proximal end 48d of the hull 48. The circumferential flange 55 has multiple transverse openings 55a, and its outer surface has a set of corresponding snap fasteners 56, so that the sealing end 34 can be firmly locked into place, closing the two halves of the hull together.

[0104] The cap 44 is then encapsulated and molded to bond it to the circumferential flange 55 of the compartment 48 and the sealing end 34, so as to encapsulate the compartment 48 and one or more counterweights inside it.

[0105] The hull 48 has multiple slots 46 for internally accommodating one or more counterweight discs 42, such as... Figure 9 A, Figure 9 B and Figure 9 E to Figure 9 As shown in H.

[0106] The hollow rod 52 of the sealing end 34 is complementary in shape to the axial external insertion hole 35 of the connector, and can be inserted therein to achieve a secure locking engagement.

[0107] In this structure, the sealing end 34 is provided with a radial inner flange 52a and forms an opening 52b. The two together constitute one component of the snap-fit ​​structure, and the axial outer insertion hole 35 constitutes the other component of the snap-fit ​​structure.

[0108] The axially extending hole 35 has an inner boss 56, an extension rod 54 whose cross-sectional shape matches the opening 52b, a sliding plate 59, and an offset spring 60. The offset spring 60 offsets the sliding plate 59 axially outward along the extension rod 54, so that when the two parts of the bayonet fitting structure are axially mated and pressed together, they can rotate relative to each other and be axially locked together. In this way, the counterweight assembly 50 is interconnected with the proximal rod 26 to form an integral rod with a counterweight end.

[0109] In other embodiments, the sealing end and the axial external insertion hole can adopt a variety of different mating structures, which can be selected from the following detachable connection mechanisms: snap-locking mechanism, concave-convex mating locking mechanism, spring-loaded locking mechanism, threaded screw mechanism and pushing mechanism, to achieve the required detachable locking engagement.

[0110] In one embodiment, the counterweight component 50 may be made of the same material as the rod 20; or in an alternative embodiment, a metal counterweight may be used, or even a combination of metal and elastomer / plastic.

[0111] In this embodiment, the detachable weight 50 is selected from a set of corresponding designs but different quantities of weights to provide weight components with different weights. These weight components can be individually replaced to fit the same proximal bar. The weight range of a single weight is 25 grams to 500 grams. In one embodiment, the 25-gram to 100-gram low-weight specifications are suitable for children; in other embodiments, 100-gram and 300-gram weights are provided for adults, and one to four weights can be selected for combination to obtain different net weights.

[0112] In this embodiment, the counterweight component 50 is color-coded for easy identification and retrieval.

[0113] In an alternative embodiment of the preferred embodiment, the second and third rods are respectively equipped with fixed counterweight components 50' and 50'' to accommodate heavy and medium-weight counterweights, respectively, which will be combined with Figures 14 to 17 and Figures 18 to 2 1. Explain each separately.

[0114] In these alternative embodiments, the caps 44' and 44" of the counterweight assemblies 50' and 50" are overmolded and fixedly connected to the axial external insertion holes 35' and 35" of the connectors 28' and 28" to form internal grooves in which one or more counterweights can be fixedly held. The counterweights still adopt the structure of counterweight discs 42' and 42" but are no longer located in the chamber, but are directly received in the axial external insertion holes 35' and 35" of the connectors 28' and 28".

[0115] In these embodiments, different numbers of counterweights can be used to form counterweight assemblies of various specifications 50', 50'". The caps 44', 44'" are provided with axial insertion parts 44a, 44b or 44c, whose axial dimensions are adapted to the outer side surface 42a of the outer counterweight, and can press against and fit against the outer side surface 42a to fill the gap caused by the absence of one or more counterweights in the groove.

[0116] Two types of rods 20' and 20'" equipped with fixed counterweight components 50' and 50" are used to accommodate heavy and medium-weight counterweights. The difference is that the embodiment of the second type of rod 20' can accommodate a heavy counterweight such as a single 300-gram weight, and its connector 28' has a flared structure to accommodate a large outer diameter counterweight disc. Therefore, the diameter of the axial external insertion hole 35' is larger than the diameter of the proximal rod portion 26', and an inner step 35a is formed on the inner end of the axial external insertion hole 35' to cooperate in supporting the outer periphery of the inner side surface 42b' of the inner counterweight disc in a fixed position.

[0117] In the case of the third type of rod body 20” embodiment, it can accommodate a medium weight counterweight such as a single 100-gram piece. Its connector 28” does not have a flared structure, so the diameter of the axial external insertion hole 35” is equivalent to the outer diameter of the proximal rod portion 26”, thus the radial dimension is smaller, corresponding to the formation of a smaller inner step 35a”.

[0118] For details, please refer to the following structure. Figure 10 , Figures 11A to 11C Thus, in this embodiment, the connector 28” has a central protrusion 57 formed in the axially outer insertion hole 35. The protrusion 57 defines a support surface 57a, which is adjacent to the inner surface 42b of the inner counterweight. Together with the smaller inner step 35a”, it fixes one or more counterweights in the groove.

[0119] The method of forming the bar 20 of the exercise device 10 will be further described with reference to manufacturing a third type of bar 20" having fixed counterweight components 50', 50" for accommodating medium counterweights.

[0120] As shown in Figure 23, the main components forming the rod have been assembled, including the core halves 16a and 16b of the core 16, the fixing part 43, the distal counterweight assembly 50, the proximal cap 41, the end cap 41a, and the outer covering shell 14.

[0121] The method includes: (i) The core halves 16a and 16b are interlocked and joined using locating pins 18a and axial grooves 18b, aligning and forming a honeycomb structure with transverse cavities, such as... Figure 8 As shown in Figure 11; (ii) The axial sleeve 28a of the connector 28 and the proximal end cap 41 are respectively fitted onto the axial insert 32a and the opposite axial insert 32b of the core half 16. (iii) The two halves of the outer shell 14 are covered by an outer layer molded around the structure; and (iv) The entire assembly is compressed and molded by heating, combining the internal honeycomb core half 16 with the proximal cap 41 and connector 28 to form an integrated proximal support end 30 and a proximal rod 26 chemically bonded to the distal counterweight assembly.

[0122] The method also includes: An inner core with a support structure 48 is formed, the support structure having a denser material core, the material core being centrally located within the inner core 16 relative to the annular material body surrounding the support structure; and A denser core of material is extended from the proximal support end 30 to the distal end terminating toward the handle portion 45 of the rod body 20, thereby positioning the pivot point at a position that reduces hand flexion when gripping the rod body 20 during use after this formation.

[0123] Because the structure includes a support structure 48, the distal counterweight end 25 is flexible relative to the arm support portion 40 and the handle portion 45 to generate resistance to the arm when torque is applied during rapid reciprocating movements of the hand. Therefore, the bending of the distal counterweight end occurs with a pivot point 58 located near the distal end 45b of the handle portion 45 as the fulcrum.

[0124] The rod 20 is made of a flexible polymer material. A thermocompression molding process creates a chemical bond between the polymer material and the metal components of the rod. This process allows for bonding of non-uniform walls, which is impossible using injection molding.

[0125] In one embodiment, ethylene propylene diene monomer (EPDM) rubber with a Shore hardness of 65 ± 5 is used as the polymer material. Alternative materials include blended thermoplastic polymers, such as a combination of nylon + polyurethane ± Seblex (7848, a low-flow, oil-extended thermoplastic styrene-modified polypropylene).

[0126] As mentioned above, additional counterweights can also be made of the same materials, suitable metals, or metal / elastomer composite structures.

[0127] The bar 20 is available in various lengths and weights to suit different user needs. For example, the standard length for men and women is, but is not limited to, 480 mm, while for children it is 300 mm. The length is not limited to these ranges and can be increased from approximately 300 mm to approximately 900 mm or 1200 mm. The latter length is particularly suitable for professional athletes or specific sports scenarios, such as martial arts (martial arts training). Similarly, the bar 20 is also available in various diameters to suit different training programs and user needs. Exemplary diameter ranges are from 25 mm to 60 mm.

[0128] Although various embodiments have been described in conjunction with specific exemplary models, it will be apparent that many modifications and changes can be made to these embodiments without departing from the broader scope of the present invention. Therefore, this specification and the accompanying drawings should be considered illustrative rather than restrictive. The accompanying drawings, which form part of this specification, illustrate specific embodiments that may practice the subject matter by way of example rather than limitation. The illustrated embodiments have been described in sufficient detail to enable those skilled in the art to implement the teachings disclosed herein. Other embodiments may be utilized and derived therefrom, with structural and logical substitutions and changes made without departing from the scope of this disclosure. Therefore, the description of these embodiments should not be construed as restrictive, and the scope of the embodiments is defined only by the appended claims and their full equivalents.

[0129] For ease of writing, embodiments of the subject matter of this invention may be referred to individually or collectively as "inventions." If multiple inventions or inventive concepts are disclosed, this designation is not intended to voluntarily limit the scope of protection of this application to any single invention or inventive concept. Therefore, although specific embodiments have been illustrated and described herein, it should be understood that any arrangement capable of achieving the same purpose may replace the illustrated specific embodiments. This disclosure is intended to cover all modifications and variations of the embodiments. Those skilled in the art, upon reading the foregoing, will readily recognize the combinations of the above embodiments and other embodiments not specifically described herein.

[0130] Obviously, the settings described in the above embodiments can be adapted to other similar exercise devices.

Claims

1. A training device, comprising: The rod has a distal counterweight end and a proximal support end; The proximal support end includes: (i) An arm support portion, disposed at the support end of the rod body, and having a fixing portion; and (ii) A handle portion, disposed in the middle of the rod body, and axially aligned with: a. The arm support located near the proximal end of the handle portion; and b. The distal counterweight end located at the distal end of the handle portion; in: (i) The arm support has sufficient longitudinal dimensions to provide support for the user's forearm and wrist; (ii) The fixing part is provided for connection to the armband connector for securing the arm of the user connected to the exercise device; and (iii) The handle portion is configured as follows: a. Positioned relative to the arm support for the user's hand, fingers, and thumb to grip; and b. Continuous with the arm support, such that the arm, wrist, and hand conform to and lock into the contours of the arm support and the handle to limit angular movement between the user's arm and wrist. Furthermore, the distal counterweight end is bendable relative to the arm support and the handle to create resistance to the arm when torque is applied during rapid reciprocating motion of the hand.

2. The exercise device of claim 1, wherein, The distal counterweight end bends with a pivot point near the distal end of the handle as the fulcrum.

3. An exercise device according to claim 1 or 2, wherein, The proximal support end is kept rigid relative to the distal counterweight end by a bracket structure to define the position of the pivot point.

4. The exercise device of claim 3, wherein, The support structure is formed by a denser core of material disposed centrally within the rod body relative to the annular material body surrounding the support structure; and extends from the proximal support end to terminate at the distal end toward the handle portion, so as to position the pivot point at a position that reduces the bending of the user's hand when gripping the rod body during use.

5. Exercise device according to any of the preceding claims, wherein, The proximal support end has a middle portion located at the connection between the arm support portion and the handle portion; the fixing portion is positioned close to the middle portion at an optimal distance to position the pivot point of the user's wrist at a certain position, so that when the fingers grip the handle portion, the arm, wrist and hand conform to the contour of the middle portion and are bound together, thereby preventing angular movement between them during rapid reciprocating movements of the hand.

6. Exercise device according to any of the preceding claims, wherein, The counterweight assembly is detachable and includes: a chamber containing one or more counterweights, the chamber being disposed inside the cover; and a sealing end that seals the opening of the cover and encapsulates the chamber and the counterweights therein; wherein: A) The cabin has multiple slots for accommodating the disc-shaped counterweights that constitute the one or more counterweights; and B) The shape of the sealing end is complementary to the shape of the axial external insertion hole of the connector, and can be embedded and reliably locked into the insertion hole.

7. The exercise device of claim 6, wherein, The sealing end forms one component of the bayonet engagement, and the distal insertion end forms another component of the bayonet engagement; wherein, after the two components are axially mated and pressed together, they can rotate relative to each other and be axially locked together, thereby interconnecting the counterweight assembly with the proximal rod.

8. Exercise device according to any of the preceding claims, wherein, The cap of the counterweight assembly is fixedly interconnected with the axial external insertion hole of the connector to form a groove inside, thereby fixing and holding the one or more counterweights within the groove.

9. The exercise device of claim 9, wherein, Various variations of the counterweight assembly with different counterweight combinations are available, wherein the cover is formed with an axial insert portion having a corresponding axial dimension, pressing against the outer surface of the outer counterweight to fill the gap caused by the absence of one or more counterweights in the groove.

10. Exercise device according to any of the preceding claims, wherein, The rod body includes: an inner honeycomb core, consisting of a pair of longitudinal inner core halves, defining the proximal rod portion of the proximal support end and the distal counterweight end; and an outer covering shell, which combines the inner honeycomb core together and connects to the proximal end of the fixed structure to form an integrated part, which is connected to the distal counterweight part.

11. Exercise device according to any of the preceding claims, when referring to claim 3 or 4, wherein, The support structure is composed of a cavity array or cavity network within an internal honeycomb core, with a lower density within the proximal support end.

12. The exercise device of claim 11, wherein, The support structure consists of an inner longitudinal extension made of solid material and an annular portion with a smaller cavity inside the proximal support end. In contrast, the cavity inside the proximal rod portion has a larger volume.

13. A method of manufacturing an exercise device according to any one of the preceding claims, comprising: Using axial positioning pins and axial grooves, two complementary core halves are interlocked and joined together, aligned and forming a honeycomb structure with transverse cavities inside, forming the inner core of the rod. The axial sleeve and proximal end cap of the connector are respectively fitted onto the axial insert of the core half and the axial insert opposite to it; The entire component is compressed and molded by heating, combining the internal honeycomb core half, the proximal end cap, and the connector to form an integrated proximal support end and a proximal rod that is chemically bonded to the distal counterweight component.

14. The method of claim 13, further comprising forming an inner core having a support structure having a denser material core disposed centrally within the inner core relative to an annular material body surrounding the support structure; and extending the denser material core from the proximal support end to a distal end terminating toward the handle portion of the rod, to position the pivot point at a position that reduces hand flexion when gripping the rod in use after such formation.

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