Dumbbell with adjustable balance weight

Abstract

The utility model relates to the technical field of dumbbell structures, in particular to an adjustable counterweight dumbbell, which comprises two groups of symmetrically arranged locking pieces, clamping pieces and a support, each locking piece comprises a screw rod, one end of each clamping piece close to the screw rod is defined as a working end, the working end is provided with a convex block, the convex block is meshed with the screw rod, and the other end of each convex block is exposed on the adjustable counterweight dumbbell; the support comprises a mounting plate and two limiting plates arranged on the mounting plate in parallel, the clamping piece is located between the two limiting plates and rotationally connected to the support, the clamping piece comprises a connecting part and an elastic piece, the connecting part is arranged at the end, close to the mounting plate, of the working end, and the elastic piece is arranged at the end, close to the mounting plate, of the clamping piece. The two ends of the elastic piece abut against the clamping piece and the mounting plate respectively, and pressure is applied to the elastic piece so that the connection relation between the protruding block and the screw can be controlled. The dumbbell provided by the utility model can solve the problem that the safety of a locking structure of an existing adjustable counterweight dumbbell is insufficient.

Description

[Technical Field]

[0001] This utility model relates to the field of dumbbell structure technology, and in particular to an adjustable weight dumbbell. [Background Technology]

[0002] With the rise of the national fitness craze, more and more people are paying attention to a healthy lifestyle and participating in various fitness exercises. Whether exercising at home or in a gym, dumbbells, as one of the most common fitness equipment, are in increasing demand. Quick-adjustable weighted dumbbells, due to their convenience and space-saving advantages, have become an ideal choice for home fitness. Through simple operations, such as rotating a knob or pressing a button, the weight of the dumbbells can be quickly changed, eliminating the need for screwing in screws and installing / removing weight plates like with traditional adjustable dumbbells, greatly saving adjustment time and making training more efficient. However, existing adjustable dumbbells have insufficient security in their locking mechanism, which can easily affect the stability and safety of the weight plates if the adjustment mechanism is accidentally activated, impacting user experience. [Utility Model Content]

[0003] To address the technical problem of insufficient security in the locking structure of existing adjustable weight dumbbells, this utility model provides an adjustable weight dumbbell.

[0004] The present invention provides an adjustable counterweight dumbbell, comprising two sets of symmetrically arranged locking components, locking components, and a support. Each locking component includes a screw. The end of the locking component near the screw is defined as the working end, and a protrusion is provided on the working end. The protrusion engages with the screw, and the other end is exposed on the adjustable counterweight dumbbell. The support includes a mounting plate and two parallel limiting plates on the mounting plate. The locking component is located between the two limiting plates and rotatably connected to the support. Each locking component includes a connecting part and an elastic element. The connecting part is located at the working end near the mounting plate, and the elastic element abuts against the locking component and the mounting plate at both ends. Pressure is applied to the elastic element to control the connection between the protrusion and the screw.

[0005] Preferably, a first connecting hole is provided on the connecting part, and a second connecting hole is provided on the limiting plate accordingly. The locking member also includes a connecting shaft, which is located at the first connecting hole and the second connecting hole. The connecting part and the bracket are rotatably connected through the connecting shaft.

[0006] Preferably, the edge surface of the connecting part near the screw is at a right angle and abuts against the mounting plate through the right-angled edge surface; the surface surface of the connecting part away from the screw is set at an angle to the mounting plate.

[0007] Preferably, a first mounting groove is formed on the locking member, and a second mounting groove is formed on the mounting plate accordingly, with both ends of the elastic member located in the first mounting groove and the second mounting groove, respectively.

[0008] Preferably, it also includes a handle, the handle being hollow, and first clearance grooves connected to the hollow channel are symmetrically opened at both ends of the handle. The protrusion engages with the screw through the first clearance grooves, and the first clearance grooves accommodate the locking member.

[0009] Preferably, it also includes a housing that fits over the grip and surrounds the locking member and the bracket.

[0010] Preferably, a second clearance groove is provided on the outer casing, and the end of the locking member away from the screw is exposed in the second clearance groove.

[0011] Preferably, the locking element further includes a nut located at the end of the screw away from the handle.

[0012] Preferably, it further includes a fixing plate and a counterweight plate, the fixing plate being fixedly connected to the mounting plate and the handle, the fixing plate abutting against the outer end of the housing, the counterweight plate being detachably disposed on the outer side of the fixing plate, and the nut abutting against the fixing plate or the counterweight plate.

[0013] Preferably, the fixing plate has a mounting hole at its center, and the counterweight plate has a clearance hole that extends from the center to the edge. The fixing plate is fixedly connected to the handle through the mounting hole, and the screw passes through the clearance hole and is installed inside the handle.

[0014] Compared with the prior art, the adjustable weight dumbbell provided by this utility model has the following advantages:

[0015] 1. This utility model provides an adjustable counterweight dumbbell. The adjustment of the protrusion and screw engagement structure is achieved through the cooperation of a locking component, a locking element, and a bracket. The locking component is locked in position by rotating the locking element, preventing accidental contact and ensuring the stability of the counterweight. Specifically, the protrusion on the working end engages with the screw, with the end furthest from the working end exposed on the adjustable counterweight dumbbell. When assembling the locking element, the screw is pushed away from the connection point, causing the locking component to bounce under the action of the elastic element. This allows the protrusion to jump between the threads on the screw, quickly determining the screw position and improving adjustment efficiency. After the screw position is determined, the user can precisely adjust the locking element position by rotating the screw, or adjust the position of the working end by adjusting the exposed end of the locking component. This allows for quick determination of the locking component position by adjusting the engagement relationship between the protrusion and the screw. The bracket, composed of a limiting plate and a mounting plate, restricts and controls the rotation of the locking component. The range of motion is limited between the two limiting plates. The two ends of the elastic element abut against the mounting plate and the locking element, respectively. The elastic force on the elastic element drives the protrusion to reset when the screw moves. When no other external force is applied, the connecting part abuts against the mounting plate under the action of the elastic element, preventing the locking element from rotating excessively. This keeps the position of the protrusion stable when the screw and the protrusion are engaged, thereby enhancing the stability of the locking element and preventing the locking element from shifting under the influence of the elastic element, which would affect the stability of the connection structure. After the locking element is positioned, the locking element is rotated to make the protrusion and the screw abut against each other, thereby locking the position of the locking element. This prevents the user from accidentally touching the locking element during use, which would cause the counterweight to unlock or loosen, thus improving the safety of the overall structure. In addition, when disassembling the counterweight, the locking element needs to be rotated so that the protrusion and the screw are not abutting each other. Then, the exposed end of the locking element is pressed to release the engagement between the protrusion and the screw, allowing the screw to move freely and be pulled out.

[0016] 2. The present invention provides an adjustable counterweight dumbbell, wherein the locking part achieves a rotatable connection on the limiting plate through the cooperation of the connecting part, the limiting plate and the connecting shaft, so that the working end rotates when the exposed end of the locking part is squeezed, and the engagement relationship between the protrusion and the screw is released or locked by rotating the working end.

[0017] 3. The adjustable counterweight dumbbell provided by this utility model has a right-angled edge at one end of the connecting part near the screw. This ensures that when the locking member moves in the direction of reinforcing the engagement between the protrusion and the screw, the connecting part can always abut against the mounting plate, preventing wear or damage to the connection between the protrusion and the screw due to excessive movement. Conversely, when the locking member moves in the opposite direction, the connecting part is prevented from abutting against the mounting plate, increasing the range of rotation of the protrusion and allowing the screw to move freely. This avoids wear at the connection point caused by friction between the screw and the protrusion during movement, thus affecting the stability and service life of the overall connection structure.

[0018] 4. The adjustable counterweight dumbbell provided by this utility model has a first mounting groove and a second mounting groove that can more stably fix the end of the elastic element. When the elastic element is subjected to elastic force at both ends, the possibility of dislocation is reduced, thus avoiding affecting the stability of the adjustment process of the locking element.

[0019] 5. The present invention provides an adjustable weighted dumbbell with a handle that provides position and space for the user to grip the dumbbell. At both ends, a first clearance groove and a hollow structure are used to accommodate the cooperation structure of the protrusion and the screw, thereby realizing the connection with the locking and locking parts and improving the stability of the overall structure.

[0020] 6. The present invention provides an adjustable weighted dumbbell with an outer shell covering the locking parts and the outer periphery of the support, protecting the two and their connection structure from external interference. Furthermore, the outer shell is easily disassembled and installed on the handle, facilitating maintenance.

[0021] 7. The present invention provides an adjustable counterweight dumbbell with a second recessed groove on the outer shell. One end of the locking member is located in the second recessed groove and exposed, so that the user can adjust the position of the protrusion by pressing the exposed end.

[0022] 8. The present invention provides an adjustable counterweight dumbbell, in which the user can adjust the locking element by means of the nut at the end of the screw.

[0023] 9. The present invention provides an adjustable counterweight dumbbell, wherein a fixed plate is fixed to the handle, and a counterweight plate is installed on the fixed plate according to the user's weight requirements. After installation, the counterweight plate is fixed by nuts to ensure the stability of the overall structure.

[0024] 10. The present invention provides an adjustable counterweight dumbbell, wherein the fixing plate is fixedly connected to the handle through the mounting hole to maintain the stability of the fixing plate, thereby allowing the counterweight plate to be connected to the screw through the clearance hole to realize the adjustment of the dumbbell weight. [Attached Image Description]

[0025] Figure 1 This is a schematic diagram of an adjustable weighted dumbbell structure provided in the first embodiment.

[0026] Figure 2 This is a schematic cross-sectional view of an adjustable weighted dumbbell provided in the first embodiment.

[0027] Figure 3 This is a schematic diagram of the bracket and connector structure provided in the first embodiment.

[0028] Figure 4 This is a schematic diagram of an adjustable weighted dumbbell explosion provided in the first embodiment.

[0029] Figure 5 This is a schematic diagram of the bracket, snap-fit ​​component, grip, and fixing plate structure provided in the first embodiment.

[0030] Explanation of reference numerals in the attached diagram:

[0031] 1. Locking component; 2. Positioning component; 3. Bracket; 4. Handle; 5. Housing; 6. Fixing plate; 7. Counterweight;

[0032] 11. Screw; 12. Nut; 21. Working end; 22. Connecting part; 23. Elastic element; 24. Connecting shaft; 25. First mounting groove; 31. Mounting plate; 32. Limiting plate; 41. First clearance groove; 51. Second clearance groove; 61. Mounting hole; 71. Clearance hole; 72. Fixing hole; 73. Handle;

[0033] 211, protrusion; 221, first connecting hole; 311, second mounting groove; 321, second connecting hole.

Detailed Implementation Methods

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.

[0035] It should be noted that the terms "first" and "second" in the specification and claims of this utility model are used to distinguish different objects, rather than to describe a specific order.

[0036] It should be noted that when an element is said to be "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is said to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0037] In this invention, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this invention and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0038] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this utility model based on the specific circumstances.

[0040] Please see Figure 1 , Figure 2 and Figure 3 The first embodiment of this utility model provides an adjustable weight dumbbell, including two sets of symmetrically arranged locking members 1, locking members 2, and brackets 3. The locking member 1 includes a screw 11. The end of the locking member 2 near the screw 11 is defined as the working end 21. A protrusion 211 is provided on the working end 21, which engages with the screw 11. The other end is exposed on the adjustable weight dumbbell. The bracket 3 includes a mounting plate 31 and two parallel limiting plates 32 on the mounting plate 31. The locking member 2 is located between the two limiting plates 32 and rotatably connected to the bracket 3. The locking member 2 includes a connecting part 22 and an elastic member 23. The connecting part 22 is provided at the end of the working end 21 near the mounting plate 31. The two ends of the elastic member 23 abut against the locking member 2 and the mounting plate 31, respectively. By applying pressure to the elastic member 23, the connection relationship between the protrusion 211 and the screw 11 is controlled.

[0041] Understandably, in this embodiment, the adjustment of the engagement structure between the protrusion 211 and the screw 11 is achieved through the mutual cooperation between the locking member 2, the locking member 1, and the bracket 3. The position of the locking member 2 is locked by rotating the locking member 1, preventing accidental contact with the locking member 2 from affecting the stability of the counterweight 7. Specifically, the protrusion 211 on the working end 21 engages with the screw 11, with the end away from the working end 21 exposed on the adjustable counterweight dumbbell. When assembling the locking member 1, the screw 11 is pushed away from the connecting part 22, and the locking member 2 bounces under the action of the elastic member 23. The protrusion 211 bounces within the threads of the screw 11, allowing for quick determination of the screw 11's position and improving adjustment efficiency. Once the screw 11's position is determined, the user can precisely adjust the position of the locking member 1 by rotating the screw 11, or adjust the position of the working end 21 by adjusting the exposed end of the locking member 2. This allows for quick determination of the locking member 2's position by adjusting the engagement relationship between the protrusion 211 and the screw 11. The bracket 3, composed of the limiting plate 32 and the mounting plate 31, restricts and controls the rotation of the locking member 2, limiting its range of motion. Between the two limiting plates 32, the two ends of the elastic element 23 abut against the mounting plate 31 and the locking element 2 respectively. The elastic force on the elastic element 23 drives the protrusion 211 to reset when the screw 11 moves. When no other external force is applied, the connecting part 22 abuts against the mounting plate 31 under the action of the elastic element 23, preventing the locking element 2 from rotating excessively. This keeps the position of the protrusion 211 stable when the screw 11 engages with the protrusion 211, thereby enhancing the stability of the locking element 2 and preventing the locking element 2 from shifting under the influence of the elastic element 23, which would affect the stability of the connection structure. After determining the position of the locking element 1, the locking element 1 is rotated to make the protrusion 211 abut against the screw 11, thereby locking the position of the locking element 2. This prevents the user from accidentally touching the locking element 2 during use, which could cause the counterweight 7 to unlock or loosen, thus improving the overall structural safety. In addition, when disassembling the counterweight 7, the locking element 1 needs to be rotated so that the protrusion 211 and the screw 11 are in a non-abutting state. Then, the exposed end of the locking element 2 is pressed to release the engagement between the protrusion 211 and the screw 11, allowing the screw 11 to move freely and thus pull out the screw 11.

[0042] Furthermore, a first connecting hole 221 is provided on the connecting part 22, and a corresponding second connecting hole 321 is provided on the limiting plate 32. The locking member 2 also includes a connecting shaft 24, which is located in the first connecting hole 221 and the second connecting hole 321. The connecting part 22 and the bracket 3 are rotatably connected through the connecting shaft 24. The locking member 2 achieves a rotatable connection on the limiting plate 32 through the cooperation of the connecting part 22, the limiting plate 32 and the connecting shaft 24, thereby pushing the protrusion 211 to make the working end 21 rotate when the exposed end of the locking member 2 is pressed or the screw 11 is assembled.

[0043] Preferably, the dimensions of the connecting shaft 24 are stepped, and the two second connecting holes 321 are of different sizes and are set to correspond to the dimensions of the two ends of the connecting shaft 24. This reduces the possibility of the connecting shaft 24 slipping out of the first connecting hole 221 and the second connecting hole 321 during the rotation of the locking member 2, and improves the stability and safety of the locking member 2 in the process of rotating and adjusting the position of the protrusion 211.

[0044] Furthermore, the edge surface of the connecting part 22 near the screw 11 is at a right angle and abuts against the mounting plate 31 through the right angle edge surface; the surface surface of the part away from the screw 11 is set at an angle to the mounting plate 31.

[0045] Understandably, when assembling the locking component 1, the screw 11 pushes the protrusion 211, causing the locking component 2 to bounce. When the locking component 2 bounces back to its original position, the right-angled surface structure on the connecting part 22 allows the connecting part 22 to abut against the mounting plate 31, preventing damage or disruption to the connection between the protrusion 211 and the screw 11 due to excessive engagement. When disassembling the locking component 1, the structure with its surface angled to the mounting plate 31 prevents the connecting part 22 from abutting against the mounting plate 31, increasing the range of rotation of the protrusion 211. This allows the screw 11 to move freely without being affected by the protrusion 211, preventing friction between the screw 11 and the protrusion 211 during movement from causing wear at the connection point and affecting the stability and service life of the overall connection structure.

[0046] Furthermore, a first mounting groove 25 is formed on the locking member 2, and a corresponding second mounting groove 311 is formed on the mounting plate 31. The two ends of the elastic member 23 are respectively located in the first mounting groove 25 and the second mounting groove 311. The first mounting groove 25 and the second mounting groove 311 can more stably fix the ends of the elastic member 23, reducing the possibility of dislocation when elastic force is applied to both ends of the elastic member 23, and avoiding affecting the stability of the adjustment process of the locking member 2.

[0047] In this embodiment, Figure 2The upper and lower parts of the two sets of locking parts 2 and screw 11's mating structure respectively demonstrate the engagement and disengagement states of the protrusion 211 and screw 11. When the locking part 1 is assembled, the locking part 1 is pushed to the designated position, and the locking part 2 bounces back to its original position under the elastic force of the elastic member 23. After resetting, the right-angled surface of the connecting part 22 abuts against the mounting plate 31. Under the support of the surface of the connecting part 22 and the elastic force of the elastic member 23, the locking part 2 has no room for movement, limiting the possibility of the protrusion 211 moving in the direction of excessive clamping with the screw 11, and protecting the engagement connection structure between the protrusion 211 and the screw 11. When the locking part 1 is disassembled, pressure is applied to the exposed end of the locking part 2 in the direction close to the mounting plate 31, and the locking part 2 rotates in the direction away from the screw 11. At the same time, the elastic member 23 is squeezed, and the protrusion 211 avoids the screw 11. There is space between the connecting part 22 and the mounting plate 31, and the locking part 2 has a large range of movement. At this time, the screw 11 can be freely disassembled.

[0048] Please see Figure 1 , Figure 2 and Figure 5 The adjustable weighted dumbbell also includes a handle 4, which is hollow. Symmetrically, first recessed grooves 41 are formed at both ends of the handle 4, connecting to the hollow channel. Protrusions 211 are located in the first recessed grooves 41 and engage with the screw 11. The first recessed grooves 41 accommodate the locking member 2. The handle 4 provides position and space for the user to grip the dumbbell, and the first recessed grooves 41 and the hollow structure at both ends accommodate the engagement structure of the protrusions 211 and the screw 11, achieving connection with the locking member 2 and the locking member 1, thus improving the overall structural stability.

[0049] Furthermore, the adjustable weight dumbbell also includes a fixed plate 6, with the handle 4 fixedly connected to the center of the fixed plate 6, so that the screw 11 can be exposed through the first clearance groove 41 via the fixed plate 6. The mounting plate 31 is fixedly connected to the side of the fixed plate 6 near the handle 4, and the protrusion 211 can pass through the first clearance groove 41 and connect to the screw 11.

[0050] Understandably, the two sets of symmetrically arranged locking parts 1, locking parts 2, brackets 3 and fixing plates 6 are respectively connected to the two ends of the handle 4 to maintain the balance of the two ends of the handle 4 and help users train scientifically.

[0051] It should be noted that the length of the first clearance groove 41 is greater than the length of the working end 21, and the first clearance groove 41 can provide rotation space for the working end 21, so as to avoid the working end 21 from contacting or bumping with the first clearance groove 41 when rotating, which would cause wear to the locking part 2 and the handle 4.

[0052] Please see Figure 1 , Figure 2 and Figure 4A mounting hole 61 is provided in the center of the fixing plate 6. The fixing plate 6 is fixedly connected to the handle 4 through the mounting hole 61, so as to maintain the stability of the fixing plate 6.

[0053] Furthermore, the adjustable weight dumbbell also includes a housing 5, which is fitted onto the handle 4 and surrounds the locking member 2 and the support 3. The housing 5 covers the outer periphery of the locking member 2 and the support 3, protecting them and their connecting structure from external interference. Moreover, the housing 5 is easily disassembled and installed on the handle 4, facilitating maintenance.

[0054] Furthermore, a second clearance groove 51 is provided on the outer casing 5, and the end of the locking member 2 away from the screw 11 is exposed in the second clearance groove 51, so that the user can adjust the position of the protrusion 211 by pressing the exposed end of the locking member 2.

[0055] Furthermore, the outer end of the outer shell 5 abuts against the outer periphery of the connection between the fixed plate 6 and the handle 4, thereby enabling the locking member 2 to work stably under the protection of the outer shell 5 and reducing external interference.

[0056] Furthermore, the locking component 1 also includes a nut 12, which is located at the end of the screw 11 away from the handle 4. The user can adjust the locking component 1 by rotating the nut 12 at the end of the screw 11. By rotating the nut 12, the screw 11 and the protrusion 211 are locked or unlocked, making the cooperation structure between the locking component 1 and the locking component 2 more stable and improving the safety of the user during exercise.

[0057] Furthermore, the adjustable counterweight dumbbell also includes a counterweight plate 7, which is detachably mounted on the outside of the fixed plate 6. The nut 12 abuts against the fixed plate 6 or the counterweight plate 7. The counterweight plate 7 is installed on the fixed plate 6 according to the user's weight requirements. After installation, the counterweight plate 7 is fixed by the nut 12 to ensure the stability of the overall structure.

[0058] Understandably, in order to improve the stability and safety of the counterweight 7, after assembling the counterweight 7, the locking member 1 is pushed to the position where the nut 12 abuts against the counterweight 7, and the locking member 1 is rotated to lock the connection structure between the screw 11 and the locking member 2, thereby restricting the axial position of the counterweight 7.

[0059] Furthermore, a clearance hole 71 is provided on the weight plate 7, which extends from the center to the edge. The screw 11 passes through the clearance hole 71 and is installed inside the handle 4, so that the weight plate 7 can be connected to the screw 11 through the clearance hole 71 to achieve the adjustment of the dumbbell weight.

[0060] Furthermore, a handle 73 is provided at the end of the counterweight 7 away from the clearance hole 71. The counterweight 7 has a certain weight, and the user can move the counterweight 7 through the handle 73.

[0061] It should be noted that when multiple counterweight plates 7 are set on the fixing plate 6, the fixing plate 6 and the counterweight plates 7, as well as the counterweight plates 7, are connected by a locking structure to restrict the movement of the counterweight plates 7 in the radial direction, so as to prevent the counterweight plates 7 from rotating or loosening during use and affecting the safety of the adjustable counterweight dumbbell.

[0062] Optionally, the fixing plate 6 and the counterweight plate 7, as well as the counterweight plates 7, can be fixed by positioning screws or a stamping structure.

[0063] Furthermore, corresponding fixing grooves and fixing holes 72 are respectively opened on the fixing plate 6 and the counterweight plate 7. After the counterweight plate 7 is installed, the fixing grooves and fixing holes 72 are connected by positioning screws to realize the range of motion of the counterweight plate 7 in the radial direction, so as to avoid the counterweight plate 7 rotating around the screw 11 during the movement, which would affect the training effect.

[0064] Furthermore, at least one pair of opposing limiting posts and limiting grooves are stamped on the counterweight plate 7. During assembly, they are connected by corresponding limiting posts and limiting grooves on different counterweight plates 7, and corresponding limiting posts / limiting grooves are opened on the fixing plate 6 to connect the counterweight plates 7, thereby fixing their positions.

[0065] Please see Figures 1 to 5 The working principle of the adjustable weight dumbbell provided in the first embodiment of this utility model is as follows:

[0066] The handle 4 is symmetrically connected to two fixed plates 6 at both ends. The bracket 3 is fixedly connected to the fixed plate 6, providing rotation space for the locking component 2 and rotatably connected to the locking component 2 through the connecting shaft 24. The outer shell 5 covers the bracket 3 and the locking component 2 to protect the locking component 2 during operation. The end of the locking component 2 away from the working end 21 is exposed outside the outer shell 5 for user operation. When the user applies pressure to the locking component 1 in the direction close to the fixed plate 6, the locking component 2 bounces and avoids, causing the screw 11 to reach the position where the nut 12 and the counterweight 7 abut against each other. After assembly The protrusion 211 re-engages with the screw 11 to fix the position of the screw 11, and the connection between the screw 11 and the protrusion 211 is locked by rotating the nut 12, so that the adjustable counterweight dumbbell remains stable during use; when disassembling, the user applies pressure to the exposed end of the locking part 2 in the direction close to the fixing plate 6, and the working end 21 moves away from the screw 11 to release the engagement relationship between the protrusion 211 and the screw 11, so that the screw 11 can move freely in the handle 4, realizing the quick disassembly of the locking part 1 and the counterweight 7.

[0067] Compared with the prior art, the adjustable weight dumbbell provided by this utility model has the following advantages:

[0068] 1. This utility model provides an adjustable counterweight dumbbell. The adjustment of the protrusion and screw engagement structure is achieved through the cooperation of a locking component, a locking element, and a bracket. The locking component is locked in position by rotating the locking element, preventing accidental contact and ensuring the stability of the counterweight. Specifically, the protrusion on the working end engages with the screw, with the end furthest from the working end exposed on the adjustable counterweight dumbbell. When assembling the locking element, the screw is pushed away from the connection point, causing the locking component to bounce under the action of the elastic element. This allows the protrusion to jump between the threads on the screw, quickly determining the screw position and improving adjustment efficiency. After the screw position is determined, the user can precisely adjust the locking element position by rotating the screw, or adjust the position of the working end by adjusting the exposed end of the locking component. This allows for quick determination of the locking component position by adjusting the engagement relationship between the protrusion and the screw. The bracket, composed of a limiting plate and a mounting plate, restricts and controls the rotation of the locking component. The range of motion is limited between the two limiting plates. The two ends of the elastic element abut against the mounting plate and the locking element, respectively. The elastic force on the elastic element drives the protrusion to reset when the screw moves. When no other external force is applied, the connecting part abuts against the mounting plate under the action of the elastic element, preventing the locking element from rotating excessively. This keeps the position of the protrusion stable when the screw and the protrusion are engaged, thereby enhancing the stability of the locking element and preventing the locking element from shifting under the influence of the elastic element, which would affect the stability of the connection structure. After the locking element is positioned, the locking element is rotated to make the protrusion and the screw abut against each other, thereby locking the position of the locking element. This prevents the user from accidentally touching the locking element during use, which would cause the counterweight to unlock or loosen, thus improving the safety of the overall structure. In addition, when disassembling the counterweight, the locking element needs to be rotated so that the protrusion and the screw are not abutting each other. Then, the exposed end of the locking element is pressed to release the engagement between the protrusion and the screw, allowing the screw to move freely and be pulled out.

[0069] 2. The present invention provides an adjustable counterweight dumbbell, wherein the locking part achieves a rotatable connection on the limiting plate through the cooperation of the connecting part, the limiting plate and the connecting shaft, so that the working end rotates when the exposed end of the locking part is squeezed, and the engagement relationship between the protrusion and the screw is released or locked by rotating the working end.

[0070] 3. The adjustable counterweight dumbbell provided by this utility model has a right-angled edge at one end of the connecting part near the screw. This allows the connecting part to fully abut against the mounting plate when the locking member moves in the direction of elongating the elastic member and reinforcing the meshing relationship between the protrusion and the screw, preventing wear or damage to the connection between the protrusion and the screw due to excessive movement. Conversely, when the locking member moves in the opposite direction, the connecting part is prevented from abutting against the mounting plate, increasing the range of rotation of the protrusion and allowing the screw to move freely. This avoids wear at the connection point caused by friction between the screw and the protrusion during movement, thus affecting the stability and service life of the overall connection structure.

[0071] 4. The adjustable counterweight dumbbell provided by this utility model has a first mounting groove and a second mounting groove that can more stably fix the end of the elastic element. When the elastic element is subjected to elastic force at both ends, the possibility of dislocation is reduced, thus avoiding affecting the stability of the adjustment process of the locking element.

[0072] 5. The present invention provides an adjustable weighted dumbbell with a handle that provides position and space for the user to grip the dumbbell. At both ends, a first clearance groove and a hollow structure are used to accommodate the cooperation structure of the protrusion and the screw, thereby realizing the connection with the locking and locking parts and improving the stability of the overall structure.

[0073] 6. The present invention provides an adjustable weighted dumbbell with an outer shell covering the locking parts and the outer periphery of the support, protecting the two and their connection structure from external interference. Furthermore, the outer shell is easily disassembled and installed on the handle, facilitating maintenance.

[0074] 7. The present invention provides an adjustable counterweight dumbbell with a second recessed groove on the outer shell. One end of the locking member is located in the second recessed groove and exposed, so that the user can adjust the position of the protrusion by pressing the exposed end.

[0075] 8. The present invention provides an adjustable counterweight dumbbell, in which the user can adjust the locking element by means of the nut at the end of the screw.

[0076] 9. The present invention provides an adjustable counterweight dumbbell, wherein a fixed plate is fixed to the handle, and a counterweight plate is installed on the fixed plate according to the user's weight requirements. After installation, the counterweight plate is fixed by nuts to ensure the stability of the overall structure.

[0077] 10. The present invention provides an adjustable counterweight dumbbell, wherein the fixing plate is fixedly connected to the handle through the mounting hole to maintain the stability of the fixing plate, thereby allowing the counterweight plate to be connected to the screw through the clearance hole to realize the adjustment of the dumbbell weight.

[0078] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable weighted dumbbell, characterized in that: It includes two sets of symmetrically arranged locking components, locking components, and brackets. The locking component includes a screw. The end of the locking component near the screw is defined as the working end. A protrusion is provided on the working end. The protrusion engages with the screw. The other end is exposed on the adjustable counterweight dumbbell. The bracket includes a mounting plate and two parallel limiting plates on the mounting plate. The locking member is located between the two limiting plates and rotatably connected to the bracket. The locking member includes a connecting part and an elastic member. The connecting part is located at the working end near the mounting plate. The two ends of the elastic member abut against the locking member and the mounting plate respectively. By applying pressure to the elastic member, the connection relationship between the protrusion and the screw is controlled.

2. The adjustable weight dumbbell as described in claim 1, characterized in that: The connecting part has a first connecting hole, and the limiting plate has a corresponding second connecting hole. The locking component also includes a connecting shaft, which is located in the first connecting hole and the second connecting hole. The connecting part and the bracket are rotatably connected through the connecting shaft.

3. The adjustable weight dumbbell as described in claim 2, characterized in that: The edge surface of the connecting part near the screw is at a right angle and abuts against the mounting plate through the right-angled edge surface; the surface of the end away from the screw is set at an angle to the mounting plate.

4. The adjustable weight dumbbell as described in claim 1, characterized in that: The locking member has a first mounting groove, and the mounting plate has a corresponding second mounting groove. The two ends of the elastic member are located in the first mounting groove and the second mounting groove, respectively.

5. The adjustable weight dumbbell as described in claim 1, characterized in that: It also includes a handle, which is hollow, and first clearance grooves are symmetrically opened at both ends of the handle to connect with the hollow channel. The protrusion engages with the screw through the first clearance groove, and the first clearance groove accommodates the locking component.

6. The adjustable weight dumbbell as described in claim 5, characterized in that: It also includes a housing that fits over the grip and surrounds the locking element and the bracket.

7. An adjustable weighted dumbbell as described in claim 6, characterized in that: A second clearance groove is provided on the outer shell, and the end of the locking member away from the screw is exposed in the second clearance groove.

8. An adjustable weighted dumbbell as described in claim 6, characterized in that: The locking element also includes a nut located at the end of the screw away from the grip.

9. An adjustable weighted dumbbell as described in claim 8, characterized in that: It also includes a fixing plate and a counterweight plate. The fixing plate is fixedly connected to the mounting plate and the handle. The fixing plate abuts against the outer end of the housing. The counterweight plate is detachably disposed on the outer side of the fixing plate. The nut abuts against the fixing plate or the counterweight plate.

10. An adjustable weighted dumbbell as described in claim 9, characterized in that: The fixing plate has a mounting hole in the center, and the counterweight plate has a clearance hole that runs from the center to the edge. The fixing plate is fixedly connected to the handle through the mounting hole, and the screw passes through the clearance hole and is installed inside the handle.

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