Novel dumbbell capable of being quickly adjusted

Abstract

The invention discloses a novel fast-adjusting dumbbell, and relates to the technical field of fitness equipment, in particular to a novel fast-adjusting dumbbell which is characterized in that 1, the novel fast-adjusting dumbbell comprises an A-type dumbbell rod, A-type dumbbell pieces are arranged on the two sides of the A-type dumbbell rod, and A-type top covers are arranged at the top ends of the A-type dumbbell pieces, and 2, the novel fast-adjusting dumbbell comprises a B-type dumbbell rod, B-type dumbbell pieces are arranged on the two sides of the B-type dumbbell rod, and A-type top covers are arranged at the top ends of the B-type dumbbell pieces. A B-type top cover is arranged at the top end of the B-type dumbbell piece. By designing an A-type quick adjusting structure and a B-type quick adjusting structure, the problems that a traditional dumbbell is inconvenient to use and has potential safety hazards due to the fact that adjusting steps are tedious and locking is not stable are solved.

Description

Technical Field

[0001] The invention relates to the technical field of fitness equipment, in particular to a novel quick-adjustment dumbbell. Background Art

[0002] With the increasing popularity of the fitness industry, adjustable dumbbells have become a common tool in homes and gyms due to their flexibility in weight adjustment based on training needs and space-saving features. Traditional adjustable dumbbells primarily connect the weight plates to the bar through threaded connections, snap-on locking, or bolted fastening.

[0003] However, the patents in the prior art have the following disadvantages:

[0004] (1) Low adjustment efficiency: Traditional dumbbells are mostly tightened by threads or fixed with bolts. When adjusting the weight, tools (such as wrenches) are needed to disassemble or install each piece one by one. The operation is cumbersome and time-consuming, and it cannot meet the needs of quickly switching training intensity.

[0005] (2) Insufficient locking reliability: Some products only achieve locking through a single buckle or spring plate. After long-term use, the buckle may become loose due to vibration or external force impact, and the risk of dumbbell plates falling off is high, posing a safety hazard.

[0006] (3) High structural complexity: To achieve the locking function, traditional designs often require the addition of multiple components (such as complex snap-on assemblies, limit blocks, etc.), which not only increases manufacturing costs but also may lead to difficulty in assembly and inconvenience in maintenance. Summary of the Invention

[0007] The purpose of the present invention is to provide a new type of quick-adjust dumbbell. By designing two quick-adjust structures, type A and type B, the invention solves the problems of inconvenience and safety hazards caused by the complicated adjustment steps and unstable locking of traditional dumbbells.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a new quick-adjust dumbbell, independent requirement 1: comprising an A-type dumbbell rod, the A-type dumbbell rod is slender and cylindrical, and a group of A-type dumbbell components are detachably connected at both ends; the A-type dumbbell components include A-type dumbbell plates and A-type connectors, the A-type dumbbell plates are centrally provided with a through hole, the A-type connectors are provided on the inner sides of the A-type dumbbell plates, the A-type connectors are connected through the card slots of the A-type dumbbell plates, and the bottom ends (at the largest diameter) of the A-type connectors are fixedly connected to the A-type dumbbell plates (this has been completed before leaving the factory, and the user does not need to perform a secondary operation); the A-type dumbbell plates are provided with A-type top covers at the top ends, and the A-type top covers are only provided on the outermost A-type dumbbell plates;

[0009] Independent requirement 2: It includes a B-type dumbbell rod, which is a slender cylindrical rod with a group of B-type dumbbell components detachably connected at both ends; the B-type dumbbell assembly includes a B-type dumbbell plate and a B-type connector, a through hole is opened in the center of the B-type dumbbell plate, and a B-type connector is provided on the inner side of the B-type dumbbell plate, and the B-type connector is connected through the card slot of the B-type dumbbell plate, and the bottom end of the B-type connector (the largest diameter) is fixedly connected to the B-type dumbbell plate (completed before leaving the factory, and the user does not need to perform a secondary operation); a B-type top cover is provided on the top of the B-type dumbbell plate, and the B-type top cover is only provided on the outermost B-type dumbbell plate.

[0010] Furthermore, an A-type button 1 is provided at the top of the A-type top cover, an A-type spring 1 is provided at the lower end of the A-type button, an A-type card bead 1 is provided at the side of the A-type top cover, and the A-type top cover moves the A-type card bead 1 by pressing the A-type button 1 and squeezing the A-type spring 1, and an A-type spring 2 is provided at the lower end of the A-type top cover.

[0011] Furthermore, an A-type connector is provided between the A-type dumbbell rod and the A-type dumbbell plate. The top of the A-type connector is provided with an external hexagon and the bottom end is provided with an internal hexagon. When connected, the outer A-type dumbbell plate is connected to the external hexagon at the top of the A-type connector, and the inner A-type dumbbell plate is inserted and connected to the internal hexagon at the bottom end of the A-type connector to prevent the A-type dumbbell plate from rotating. The top of the A-type connector is provided with an A-type button 2, the lower end of the A-type button 2 is provided with an internal hexagon. The A-type button 2 is parallel to the internal hexagon in a natural state, and the lower end of the A-type button 2 is provided with an A-type spring 3. The side of the A-type connector is provided with an A-type clamping bead 2, and the A-type clamping bead 2 is embedded in the circular hole of the A-type connector and then clamped in the button groove and sealed.

[0012] Furthermore, a B-type button is provided at the top of the B-type top cover, a B-type spring is provided at the lower end of the B-type button, a B-type card is provided on the side of the B-type top cover, and the B-type top cover moves the B-type card by pressing the B-type button to squeeze the B-type spring, a B-type spring is provided at the lower end of the B-type top cover, and a B-type card slot is provided at the top of the B-type top cover.

[0013] Furthermore, a B-type connector is provided between the B-type dumbbell rod and the B-type dumbbell plate. The top of the B-type connector is provided with an external hexagon and the bottom end is provided with an internal hexagon. When connected, the outer B-type dumbbell plate is connected to the external hexagon at the top of the B-type connector, and the inner B-type dumbbell plate is inserted and connected to the internal hexagon at the bottom end of the B-type connector to prevent the B-type dumbbell plate from rotating. A pin hole is provided at the bottom end of the B-type lever, a B-type lever is provided at the upper end of the pin hole, and a B-type pin is provided on the side of the pin hole. The B-type pin is moved by moving the B-type lever, a B-type spring three is provided at the lower end of the B-type pin, and a B-type slot two is provided at the bottom end of the B-type connector.

[0014] Furthermore, the bottom end of the A-type connector is fixedly connected to the A-type dumbbell plate (assembly is completed before leaving the factory, and the user does not need to perform a secondary operation); when in use, the top end of the A-type connector is aligned with the center hole of the handle end of the A-type dumbbell rod, and pushed in axially along the rod body until the A-type dumbbell plate contacts the end face of the A-type dumbbell rod; then, the A-type button 2 at the top end of the A-type connector is pressed, and the button presses down the A-type spring 3, driving the A-type clamping bead 2 to retract into the interior of the connector (out of the circular hole on the A-type connector), keeping the pressed state and completely inserting the A-type connector into the A-type dumbbell rod; after releasing the A-type button 2, the A-type spring 3 resets and pushes the A-type clamping bead 2 to pop out, insert into the circular hole of the A-type connector and clamp into the preset slot in the A-type dumbbell rod, completing the axial locking of the first group of A-type dumbbell plates and the A-type dumbbell rod.

[0015] Furthermore, the central through hole of the A-type top cover is aligned with the outer central hole of the outermost A-type dumbbell plate group, and is pushed in axially along the rod body until all A-type dumbbell plate groups are covered. Then, the A-type button 1 on the top of the A-type top cover is pressed, and the button presses down the A-type spring 1, driving the A-type card bead 1 to retract into the inside of the top cover (out of the positioning slot at the end of the A-type dumbbell plate). The pressed state is maintained and the A-type top cover is completely inserted into the end of the A-type dumbbell plate. After releasing the A-type button 1, the A-type spring 1 is reset to push the A-type card bead 1 to pop out and snap into the positioning slot at the end of the A-type dumbbell plate, completing the fixation of the A-type top cover and the A-type dumbbell plate. Among them, the A-type spring 2 at the bottom end of the A-type top cover is in contact with the top of the uppermost A-type dumbbell plate in a natural state, providing slight pressure to prevent loosening.

[0016] Furthermore, the largest diameter part of the bottom end of the B-type connector is fixedly connected to the B-type dumbbell piece (this has been completed before leaving the factory and the user does not need to perform a secondary operation).

[0017] Furthermore, the top of the B-type connector is aligned with the center hole of the handle end of the B-type dumbbell rod, and is pushed in axially along the rod body until the B-type dumbbell plate contacts the end face of the B-type dumbbell rod; then the B-type lever at the top of the B-type connector is pressed, and the lever presses down the B-type spring three, driving the B-type pin to retract into the inside of the connector (out of the pin hole on the B-type connector), maintaining the pressed state and completely inserting the B-type connector into the B-type dumbbell rod. After releasing the B-type lever, the B-type spring three resets and pushes the B-type pin to pop out, insert into the pin hole of the B-type connector and jam into the preset slot in the B-type dumbbell rod, completing the axial locking of the first set of B-type dumbbell plates and the B-type dumbbell rod.

[0018] Furthermore, the central through hole of the B-type top cover is aligned with the outer central hole of the outermost B-type dumbbell plate group, and is pushed in axially along the rod body until all B-type dumbbell plate groups are covered, and then the B-type button on the top of the B-type top cover is pressed, and the button presses down the B-type spring 1, driving the B-type clamping bead 1 to retract into the inside of the top cover (out of the positioning slot at the end of the B-type dumbbell plate), and the pressed state is maintained and the B-type top cover is completely inserted into the end of the B-type dumbbell plate; after releasing the B-type button, the B-type spring 1 resets and pushes the B-type clamping bead 1 to pop out, and snap into the positioning slot at the end of the B-type dumbbell plate, completing the fixation of the B-type top cover and the B-type dumbbell plate; wherein, the B-type spring 2 at the bottom end of the B-type top cover contacts the top of the uppermost B-type dumbbell plate in a natural state, providing slight pressure to prevent loosening.

[0019] The present invention provides a novel quick-adjust dumbbell, which has the following beneficial effects:

[0020] 1. Efficient and convenient installation and disassembly, flexible adjustment:

[0021] Type A dumbbell: Through the button 2 and the card bead 2 of the A-type connector and the spring 3, pressing button 2 can quickly unlock the axial lock of the dumbbell plate, and the dumbbell plate can be pushed in or pulled out along the axial direction of the rod body, which saves effort; the button 1 and the card bead 1 of the A-type top cover are linked by spring 1. Pressing button 1 can unlock the top cover. Spring 2 automatically pushes out the top cover after unlocking, avoiding the effort of manual removal and significantly improving adjustment efficiency.

[0022] Type B dumbbell: The lever and pin of the Type B connector cooperate with spring three. By toggling the lever, you can control the extension and retraction of the pin to quickly lock or unlock the dumbbell plates. The button and the card bead of the Type B top cover are linked by spring one. After pressing the button to unlock the top cover, spring two assists in ejecting it. At the same time, the cooperation between the card bead and the dumbbell bar slot ensures that the top cover fits tightly. No tools are required during the entire installation and disassembly process, which meets the needs of quickly switching training weights.

[0023] 2. Multiple locking mechanisms, high reliability:

[0024] Type A dumbbell: The second bead of the A-type connector is inserted into the round hole of the connector and clamped into the preset slot in the dumbbell rod, forming an axial lock for the first dumbbell piece; the first bead of the A-type top cover is clamped into the positioning slot at the end of the dumbbell piece. The double locking prevents the dumbbell piece from loosening and falling off during exercise, ensuring safe use.

[0025] B-type dumbbells: The first dumbbell plate is locked in place via the lever of the outer B-type connector. When the dumbbell plate is in place, its end face presses into the center hole at the top of the outer connector. This hole is designed as a locking structure that mates with the end of the lever, effectively preventing the lever from moving backward, thereby securing the first dumbbell plate. Simultaneously, the locking bead of the B-type top cover engages the positioning slot at the end of the dumbbell plate, further locking the relative position of the plate and the top cover. The outer and inner connectors form a physical connection through the center hole at the top, ultimately creating a dual protection mechanism of "lever lock + top cover lock," significantly reducing the risk of dumbbell plates falling out due to accidental collisions.

[0026] 3. Strong structural stability and adaptability:

[0027] The dumbbell plates fit tightly to the dumbbell rod through the connector (the outer side of the A-type connector fits to the inner side of the dumbbell plates, and the outer side of the B-type connector fits to the inner side of the dumbbell plates). When multiple dumbbell plates are arranged axially along the rod, there is no gap and the overall load-bearing is uniform.

[0028] Both Type A and Type B dumbbell bars are slender cylindrical, with detachable dumbbell plates at both ends. Users can increase or decrease the number of dumbbell plates according to training needs (such as installing 1-5 plates on one side) and flexibly adjust the weight (such as 2kg-10kg) to adapt to training scenarios with different strength levels.

[0029] 4. Detailed design optimizes user experience:

[0030] The second A-type top cover spring is only used to automatically push out the top cover after unlocking. It has no additional buffering function to prevent the top cover from popping out uncontrollably due to excessive spring elasticity.

[0031] The combination of B-type top cover spring one and spring two ensures that the top cover can be removed smoothly after the card bead is unlocked, and limits the axial movement of the top cover through the cooperation between the card bead and the card slot, taking into account both operational convenience and locking reliability.

[0032] The clearance between the center hole of the dumbbell plate and the dumbbell rod ensures smooth and unobstructed pushing, thus improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0034] Figure 1 This is a schematic diagram of the overall structure of Type A of the present invention;

[0035] Figure 2 Schematic top view of the A-type top cover of the present invention;

[0036] Figure 3 Schematic diagram of the anatomy of the A-type roof of the present invention;

[0037] Figure 4 Schematic top view of the A-type connector of the present invention;

[0038] Figure 5 Schematic diagram of the anatomy of the type A connector of the present invention;

[0039] Figure 6 This is a schematic diagram of the overall structure of Type B of the present invention;

[0040] Figure 7 Schematic top view of the B-type top cover of the present invention;

[0041] Figure 8 Schematic diagram of the anatomy of the B-type roof of the present invention;

[0042] Figure 9 Schematic top view of the B-type connector of the present invention;

[0043] Figure 10 This is a schematic diagram of the anatomy of the new practical B-type connector. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0045] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] Example 1: Assembly and use of type A quick-adjust dumbbell assembly

[0047] This embodiment takes the A-type dumbbell as the core to demonstrate the implementation process of its quick adjustment function.

[0048] Parts preparation: The A-type dumbbell rod 1 is a slender cylinder with a diameter of 30mm and a length of 1200mm (the surface is anti-slip treated); there are 6 A-type dumbbell plates 2, each with a thickness of 20mm and an outer diameter of 80mm, and a through hole with a diameter of 25mm in the center; the A-type connector 11 is a stepped shaft structure with an external hexagonal top (diameter of 32mm), an internal hexagonal bottom (diameter of 28mm), a height of 40mm, and a mounting hole (diameter of 5mm) for the A-type bead 2 14 on the side; the A-type top cover 3 is disc-shaped, with a diameter of 90mm and a center through hole of 25mm in diameter. The top is provided with an A-type button 7 (diameter of 15mm, height of 10mm), the side is provided with an A-type bead 9 (diameter of 6mm), and the bottom is provided with an A-type spring 2 10 (compression stroke of 5mm).

[0049] Assembly steps:

[0050] Fixing the A-type connector and the dumbbell plate: Before leaving the factory, the bottom end (hexagonal end) of the A-type connector 11 has been fixedly connected with the central through hole of the innermost A-type dumbbell plate 2 by interference fit (to ensure that the user does not need to perform a secondary operation).

[0051] To install the first set of dumbbell plates: align the top (external hexagonal end) of the A-type connector 11 with the center hole (28mm diameter) at the handle end of the A-type dumbbell rod 1, and push it in axially along the rod until the A-type dumbbell plate 2 is in contact with the end face of the dumbbell rod. At this time, press the A-type button 2 12 (12mm diameter, 8mm height), and the A-type spring 3 13 (compression stroke 3mm) at its lower end is compressed, driving the A-type bead 2 14 to retract into the connector (out of the preset slot in the dumbbell rod). Keep pressing the connector to fully insert the dumbbell rod; after releasing the button 2, the spring 3 resets, the bead 2 pops out and snaps into the slot (6mm diameter) of the dumbbell rod, completing the axial locking of the first set of dumbbell plates (to prevent sliding).

[0052] Stack multiple sets of dumbbell plates: Repeat the above steps to stack the remaining 5 A-type dumbbell plates in sequence on the other end of the A-type dumbbell rod. Each plate is locked to the dumbbell rod through the A-type connector 11 (because the bottom end of the connector is already fixed to the dumbbell plate, only the top end needs to be installed and locked).

[0053] Fix the A-type top cover: align the center through hole of the A-type top cover 3 with the outer center hole of the outermost dumbbell plate (diameter 25mm), and push it in along the axial direction of the rod until all dumbbell plates are covered; press the A-type button 1 7, and the A-type spring 1 8 (compression stroke 4mm) at its lower end is compressed, driving the A-type clamping bead 1 9 to retract into the inside of the top cover (out of the positioning slot at the end of the dumbbell plate, diameter 6mm), and keep the pressing state to completely insert the top cover; after releasing the button 1, the spring 1 resets, the clamping bead 1 pops out and snaps into the positioning slot of the dumbbell plate, completing the fixing of the top cover (at the same time, the A-type spring 2 10 at the bottom end of the top cover contacts the top of the uppermost dumbbell plate, providing a slight pressure of 0.5N to prevent loosening).

[0054] Usage effect: Users can quickly remove or stack dumbbell plates by pressing button two and button one according to training needs (single adjustment takes only 5 seconds), and the internal and external hexagonal design of the A-type connector effectively prevents the dumbbell plates from rotating, ensuring stability during use.

[0055] Example 2: Quick Locking and Adjustment of Type B Quick Adjust Dumbbell Assembly

[0056] This embodiment takes the B-type dumbbell as the core, highlighting the difference in locking structure (lever + latch design) between the B-type dumbbell and the A-type dumbbell.

[0057] Parts preparation: The B-type dumbbell rod 4 is a slender cylinder with a diameter of 32mm and a length of 1100mm; there are 8 B-type dumbbell plates 5, each with a thickness of 18mm and an outer diameter of 85mm, and a through hole with a diameter of 28mm in the center; the B-type connector 20 is a stepped shaft structure, with an external hexagonal corner at the top (diameter 35mm), an internal hexagonal corner at the bottom (diameter 30mm), and a height of 45mm. The side is provided with mounting holes for the B-type lever 21 (length 20mm, width 8mm) and the B-type pin 23 (diameter 7mm); the B-type top cover 6 is disc-shaped, with a diameter of 95mm and a center through hole with a diameter of 28mm. A B-type button 15 (diameter 18mm, height 12mm) is provided at the top, a B-type card bead 17 (diameter 7mm) is provided on the side, and a B-type spring 2 18 (compression stroke 6mm) is provided at the bottom.

[0058] Assembly steps:

[0059] Fixing the B-type connector and the dumbbell piece: Before leaving the factory, the bottom end (hexagonal end) of the B-type connector 20 has been fixedly connected with the central through hole of the innermost B-type dumbbell piece 5 by interference fit.

[0060] Install the first set of dumbbell plates: align the top end (external hexagonal end) of the B-type connector 20 with the center hole (30mm in diameter) at the handle end of the B-type dumbbell rod 4, and push it in along the axial direction of the rod body until the dumbbell plates are in contact with the end surface of the dumbbell rod; press the B-type lever 21 (press down 10mm), and the B-type spring three 22 at its lower end (compression stroke 5mm) is compressed, driving the B-type pin 23 to retract into the inside of the connector (out of the preset pin hole in the dumbbell rod, diameter 7mm), and keep the pressing state to completely insert the connector into the dumbbell rod; after releasing the lever, the spring three resets, the pin pops out and snaps into the pin hole of the dumbbell rod, completing the axial locking of the first set of dumbbell plates.

[0061] Stacking multiple sets of dumbbell plates: Repeat the above steps, and stack the remaining 7 B-type dumbbell plates in sequence on the other end of the B-type dumbbell rod, and each plate is locked to the dumbbell rod through the B-type connector 20. Fix the B-type top cover: align the center through hole of the B-type top cover 6 with the outer center hole (diameter 28mm) of the outermost dumbbell plate, and push it in along the axial direction of the rod body until all the dumbbell plates are covered; press the B-type button 15, and the B-type spring 16 (compression stroke 5mm) at its lower end is compressed, driving the B-type bead 17 to retract into the inside of the top cover (out of the positioning slot at the end of the dumbbell plate, diameter 7mm), and keep the pressing state to completely insert the top cover; after releasing the button, the spring 1 resets, the bead pops out and snaps into the positioning slot of the dumbbell plate, completing the fixing of the top cover (the B-type spring 2 18 at the bottom end of the top cover contacts the top of the uppermost dumbbell plate, providing a slight pressure of 0.8N to prevent loosening).

[0062] Usage effect: The B-type dumbbell adopts a locking structure of lever + pin. Compared with the button + bead design of type A, it is more suitable for the rapid adjustment of large-size dumbbell plates (the single adjustment force is smaller, which is suitable for users with less strength). The cooperation between the pin and the pin hole further enhances the locking reliability and avoids the risk of loosening during heavy weight training.

[0063] Example 3: Mixed Adjustment and Scenario Application of Type A and Type B Dumbbells

[0064] This embodiment demonstrates how users can mix and match Type A and Type B components according to training needs to achieve flexible switching of multiple weight gears.

[0065] Scenario requirements: The user needs to perform three types of exercises: dumbbell bench press (requires a heavier weight), dumbbell curl (requires a medium weight), and dumbbell lateral raise (requires a lighter weight), and needs to quickly switch the dumbbell plate combination.

[0066] Adjustment process:

[0067] Dumbbell bench press (heavy weight): select B-type dumbbell bar 4, install 4 B-type dumbbell plates 5 (each weighing 5 kg), and lock them with B-type top cover 6 through B-type connector 20 (total weight 4×5 kg=20 kg).

[0068] Dumbbell curl (medium weight): Replace with an A-type dumbbell bar 1, install 3 A-type dumbbell plates 2 (each weighing 3 kg) + 1 B-type dumbbell plate 5 (5 kg), lock the A-type plates through the A-type connector 11 and the B-type connector 20 to lock the B-type plates (total weight 3×3 kg + 5 kg = 14 kg).

[0069] Dumbbell lateral raise (light weight): Use only the A-type dumbbell bar 1, install two A-type dumbbell plates 2 (each weighing 2 kg), and lock them through the A-type connector 11 and the A-type top cover 3 (total weight 2×2 kg=4 kg).

[0070] Switching advantages:

[0071] The A-type component is locked by a button + card bead, which is suitable for the quick removal of small weight plates (single finger press can be completed);

[0072] The B-type component is locked by a lever + pin, which is suitable for the stable fixation of heavy weight plates (the pin depth is 10mm, which has stronger shear resistance);

[0073] When used in combination, the universal center hole (25-30mm diameter) of Type A and Type B dumbbell bars is designed to be compatible with both connectors, enabling cross-type combinations to meet diverse training needs.

[0074] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A novel quick-adjust dumbbell, comprising an A-type dumbbell bar (1), characterized in that: The A-type dumbbell rod (1) is in the shape of an elongated cylinder, and a group of A-type dumbbell components are detachably connected at both ends; the A-type dumbbell component comprises an A-type dumbbell plate (2) and an A-type connector (11); a through hole is provided at the center of the A-type dumbbell plate (2); an A-type connector (11) is provided on the inner side of the A-type dumbbell plate (2); the A-type connector (11) is connected through a slot of the A-type dumbbell plate (2); the bottom end (the largest diameter) of the A-type connector (11) is fixedly connected to the A-type dumbbell plate (2) (this has been completed before leaving the factory, and the user does not need to perform a secondary operation); an A-type top cover (3) is provided at the top end of the A-type dumbbell plate (2), and the A-type top cover (3) is only provided on the outermost A-type dumbbell plate (2); The invention discloses a novel quick-adjust dumbbell, comprising a B-type dumbbell rod (4), characterized in that: the B-type dumbbell rod (4) is slender and cylindrical, and a group of B-type dumbbell components are detachably connected at both ends; the B-type dumbbell components comprise B-type dumbbell pieces (5) and B-type connectors (20), a through hole is provided at the center of the B-type dumbbell pieces (5), a B-type connector (20) is provided on the inner side of the B-type dumbbell pieces (5), the B-type connector (20) is connected through a slot of the B-type dumbbell pieces (5), and the bottom end (the largest diameter point) of the B-type connector (20) is fixedly connected to the B-type dumbbell pieces (5) (this is completed before leaving the factory, and the user does not need to perform a secondary operation); a B-type top cover (6) is provided at the top end of the B-type dumbbell pieces (5), and the B-type top cover (6) is only provided on the outermost B-type dumbbell pieces (5).

2. The novel quick-adjust dumbbell according to claim 1, characterized in that: The top of the A-type top cover (3) is provided with an A-type button (7), the lower end of the A-type button (7) is provided with an A-type spring (8), the side of the A-type top cover (3) is provided with an A-type clamping bead (9), the A-type cover plate (3) moves the A-type clamping bead (9) by pressing the A-type button (7) to squeeze the A-type spring (8), and the lower end of the A-type top cover (3) is provided with an A-type spring (10).

3. The novel quick-adjust dumbbell according to claim 1, characterized in that: An A-type connector (11) is provided between the A-type dumbbell rod (1) and the A-type dumbbell plate (2). The top of the A-type connector (11) is provided with an outer hexagon and the bottom is provided with an inner hexagon. When connected, the outer A-type dumbbell plate (2) is connected to the outer hexagon at the top of the A-type connector (11), and the inner A-type dumbbell plate (2) is inserted and connected to the inner hexagon at the bottom of the A-type connector (11) to prevent the A-type dumbbell plate (2) from rotating. The top of the A-type connector (11) is provided with an A-type button 2 (12). The lower end of the A-type button 2 (12) is provided with an inner hexagon. The A-type button 2 (12) is parallel to the inner hexagon in a natural state. The lower end of the A-type button 2 is provided with an A-type spring 3 (13). The side of the A-type connector (11) is provided with an A-type clamping bead 2 (14). The A-type clamping bead 2 (14) is caught in the round hole of the A-type connector (11) and then clamped in the button groove and sealed.

4. The novel quick-adjust dumbbell according to claim 1, characterized in that: The top of the B-type cover plate (6) is provided with a B-type button (15), the lower end of the B-type button (15) is provided with a B-type spring (16), the side of the B-type cover plate (6) is provided with a B-type card bead (17), the B-type cover plate (6) moves the B-type card bead (17) by pressing the B-type button (15) to squeeze the B-type spring (16), the lower end of the B-type cover plate (6) is provided with a B-type spring (18), and the top of the B-type cover plate (6) is provided with a B-type card slot (19).

5. The novel quick-adjust dumbbell according to claim 1, characterized in that: A B-type connector (20) is provided between the B-type dumbbell rod (4) and the B-type dumbbell plate (5). The top of the B-type connector (20) is provided with an outer hexagon and the bottom is provided with an inner hexagon. When connected, the outer B-type dumbbell plate (5) is connected to the outer hexagon of the top of the B-type connector (20), and the inner B-type dumbbell plate (5) is inserted and connected to the inner hexagon of the bottom of the B-type connector (20) to prevent the B-type dumbbell plate (5) from rotating. A latch hole is provided at the bottom end of the B-type lever (21). The upper end of the latch hole is provided with a B-type lever (21). A B-type latch (23) is provided on the side of the latch hole. The B-type latch (23) is moved by moving the B-type lever (21). The lower end of the B-type latch (23) is provided with a B-type spring three (22). The bottom end of the B-type connector (20) is provided with a B-type slot two (24).

6. The novel quick-adjust dumbbell according to claim 1, characterized in that: The bottom end of the A-type connector (11) is fixedly connected to the A-type dumbbell plate (2) (the assembly has been completed before leaving the factory, and the user does not need to perform a secondary operation); when in use, the top end of the A-type connector (11) is aligned with the center hole of the handle end of the A-type dumbbell rod (1), and pushed in along the axial direction of the rod body until the A-type dumbbell plate (2) contacts the end surface of the A-type dumbbell rod (1); then, the A-type button 2 (12) at the top end of the A-type connector (11) is pressed, and the button presses down the A-type spring 3 (13), driving The second A-type clamping bead (14) is retracted into the connector (disengaged from the circular hole on the A-type connector), and the A-type connector (11) is kept pressed and completely inserted into the A-type dumbbell rod (1); after releasing the second A-type button (12), the third A-type spring (13) is reset to push the second A-type clamping bead (14) to pop out, insert into the circular hole of the A-type connector (11) and clamp into the preset slot in the A-type dumbbell rod (1), completing the axial locking of the first group of A-type dumbbell plates (2) and the A-type dumbbell rod (1).

7. The novel quick-adjust dumbbell according to claim 1, characterized in that: The central through hole of the A-type top cover (3) is aligned with the outer central hole of the outermost A-type dumbbell plate (2) group, and is pushed in along the axial direction of the rod body until all the A-type dumbbell plates (2) are covered. Then, the A-type button (7) at the top of the A-type top cover (3) is pressed down. The button presses down the A-type spring (8), driving the A-type card bead (9) to retract into the inside of the top cover (to disengage from the positioning card slot at the end of the A-type dumbbell plate (2)). The pressing state is maintained and the A-type top cover (3) is completely closed. After the end of the A-type dumbbell piece (2) is inserted and the A-type button (7) is released, the A-type spring (8) is reset to push the A-type card bead (9) to pop out and snap into the positioning card slot at the end of the A-type dumbbell piece (2), thereby completing the fixation of the A-type top cover (3) and the A-type dumbbell piece (2). In a natural state, the A-type spring (10) at the bottom end of the A-type top cover (3) contacts the top of the uppermost A-type dumbbell piece (2), providing slight pressure to prevent loosening.

8. The novel quick-adjust dumbbell according to claim 1, characterized in that: The bottom end (the largest diameter point) of the B-type connector (20) is fixedly connected to the B-type dumbbell piece (5) (this has been completed before leaving the factory, and the user does not need to perform a secondary operation).

9. The novel quick-adjust dumbbell according to claim 5, characterized in that: The top end of the B-type connector (20) is aligned with the center hole of the handle end of the B-type dumbbell rod (4), and is pushed in along the axial direction of the rod body until the B-type dumbbell piece (5) contacts the end face of the B-type dumbbell rod (4); then the B-type lever (21) at the top end of the B-type connector (20) is pressed, and the lever presses down the B-type spring three (23), driving the B-type latch (22) to retract into the connector (out of the latch hole on the B-type connector), and the pressing state is maintained and the B-type connector (20) is completely inserted into the B-type dumbbell rod (4). After the B-type lever (21) is released, the B-type spring three (23) is reset to push the B-type latch (22) to pop out, insert into the latch hole of the B-type connector (20) and clamp the preset slot in the B-type dumbbell rod (4), completing the axial locking of the first group of B-type dumbbell pieces (5) and the B-type dumbbell rod (4).

10. The novel quick-adjust dumbbell according to claim 1, characterized in that: The central through hole of the B-type top cover (6) is aligned with the outer central hole of the outermost B-type dumbbell piece (5) group, and is pushed in along the axial direction of the rod body until all the B-type dumbbell pieces (5) are covered. Then, the B-type button (15) at the top of the B-type top cover (6) is pressed, and the button presses down the B-type spring (16), driving the B-type card bead (17) to retract into the inside of the top cover (to disengage from the positioning card slot at the end of the B-type dumbbell piece (5)). The pressing state is maintained and the B-type top cover (6) is completely closed. Insert the end of the B-type dumbbell piece (5); after releasing the B-type button (15), the B-type spring 1 (16) resets and pushes the B-type card bead (17) to pop out, and is locked into the positioning card slot at the end of the B-type dumbbell piece (5), completing the fixation of the B-type top cover (6) and the B-type dumbbell piece (5); wherein, the B-type spring 2 (18) at the bottom end of the B-type top cover (6) contacts the top end of the uppermost B-type dumbbell piece (5) in a natural state, providing slight pressure to prevent loosening.

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