Weight-adjustable dumbbell

Abstract

The utility model relates to the technical field of fitness equipment, and discloses a weight-adjustable dumbbell which comprises a mounting shaft, a plurality of dumbbell pieces are arranged at the two ends of the mounting shaft respectively, first locking rings are connected to the two ends of the mounting shaft in a threaded mode respectively, and limiting discs are fixedly connected to the surfaces of the first locking rings. The positions of the dumbbell pieces are fixed through the cooperation of the first locking ring and the second locking ring, the first locking ring makes contact with the surfaces of the dumbbell pieces, the dumbbell pieces are preliminarily limited, and the second locking ring is matched with a limiting disc on the first locking ring through structures such as a movable rod, a limiting buckle and a positioning hole. The first locking ring does not rotate, so that the dumbbell pieces are firmly fixed, the dumbbell pieces are effectively prevented from shaking through the combined action of primary limiting of the first locking ring and reinforcing limiting of the second locking ring, and the dumbbell pieces are prevented from shaking when the dumbbell pieces are taken up, put down or subjected to various body-building actions in daily body-building activities. And the dumbbell sheets can be stably kept at set positions.

Description

TECHNICAL FIELD

[0001] The utility model relates to body -building apparatus technical field especially, it relates to a dumbbell of adjustable weight. BACKGROUND

[0002] With the continuous improvement of people's health consciousness, body -building has become an important part of many people's daily life, and dumbbell as a common and convenient body -building equipment is loved by the majority of body -building enthusiasts.

[0003] Although the adjustable weight dumbbell is convenient for users to adjust the number of dumbbell pieces according to their own exercise needs, the fixing of the dumbbell pieces after adjusting the weight has always been a key problem. In daily fitness activities, the dumbbell often relies on the fixing device connected by the threads on both sides to realize the fixing of the dumbbell pieces. This fixing method may meet the basic fixing needs in the initial stage, but with long-term use, due to only a single fixing structure, the dumbbell is often affected by various conditions in the actual fitness scene. For example, during the process of frequently picking up and putting down the dumbbell, each contact with the ground or other objects will produce a certain impact force, which will be transmitted to the fixing device. Once this fixing device is affected by the above for a long time, the fixing effect of the dumbbell pieces will be greatly reduced, and the fixing device itself may shake, thereby driving the dumbbell pieces to shake. This shaking not only affects the exercise experience of the user and interferes with the normal fitness action rhythm, making it difficult to achieve the expected exercise effect, but also has certain safety hazards. SUMMARY

[0004] To solve the above technical problems, the utility model provides a dumbbell of adjustable weight.

[0005] The utility model adopts the following technical scheme to realize: a dumbbell of adjustable weight, including the mounting shaft, the both ends of mounting shaft all are provided with a plurality of dumbbell pieces, the both ends of mounting shaft all are connected with first locking ring, the surface of first locking ring is connected with the limiting disc fixedly, the surface of limiting disc is equipped with the circular slide groove, the surface of mounting shaft is connected with second locking ring, both sides of second locking ring are connected with the movable rod fixedly, the surface of movable rod is equipped with the built-in groove, the built-in groove is connected with the extension spring fixedly, the surface of extension spring is connected with the limiting buckle fixedly, both sides of limiting disc surface are equipped with the positioning hole, the limiting buckle is connected in the positioning hole.

[0006] Through the technical scheme, the movable rod is rotationally connected to the inside of the circular sliding groove and is matched with the circular sliding groove, so that the movable rod can smoothly move and rotate in the circular sliding groove during the installation and rotation of the second locking ring. This helps the cooperative work of the whole locking mechanism, reduces the friction and jamming between the components, improves the reliability and service life of the dumbbell structure, and makes the dumbbell more stable and convenient during the weight adjustment operation, avoiding the shaking of the dumbbell.

[0007] As a further improvement of the above scheme, the movable rod is rotationally connected to the inside of the circular sliding groove, and the movable rod is matched with the circular sliding groove.

[0008] Through the technical scheme, the movable rod can smoothly move and rotate in the circular sliding groove during the installation and rotation of the second locking ring.

[0009] As a further improvement of the above scheme, the positioning hole is matched with the limiting buckle.

[0010] Through the technical scheme, the matching of the positioning hole and the limiting buckle is the key to effectively fix the dumbbell piece. This matching relationship ensures that the limiting buckle can be accurately clamped into the positioning hole during the installation of the second locking ring, thereby reliably positioning the limiting disc and the first locking ring, preventing the first locking ring from rotating, and indirectly stabilizing the position of the dumbbell piece.

[0011] As a further improvement of the above scheme, the surface of the first locking ring is in contact with the dumbbell piece, and the installation shaft is fixedly connected with a blocking ring on both sides.

[0012] Through the technical scheme, the surface of the first locking ring is in contact with the dumbbell piece, which directly participates in the fixing process of the dumbbell piece and cooperates with the whole locking structure, enhancing the stability of the dumbbell piece on the installation shaft. The blocking ring on both sides of the installation shaft cooperates with the first locking ring, further limiting the position of the dumbbell piece, preventing unnecessary movement of the dumbbell piece in the axial direction, and improving the safety and stability of the dumbbell structure.

[0013] As a further improvement of the above scheme, the dumbbell piece is located in the middle of the first locking ring and the blocking ring.

[0014] Through the technical scheme, the dumbbell piece is located in the middle of the first locking ring and the blocking ring, and this positional relationship limits the dumbbell piece in all directions. In the transverse direction, the first locking ring and the blocking ring play a blocking role; in the longitudinal direction, the whole locking structure ensures that the first locking ring does not rotate to fix the dumbbell piece. This layout makes the dumbbell piece stable during use, avoids shaking or displacement, and improves the user's experience.

[0015] As a further improvement of the above scheme, the middle of the installation shaft is fixedly connected with a friction sleeve.

[0016] By the technical scheme, the friction sleeve fixedly connected to the middle part of the mounting shaft plays an important role. When the user holds the dumbbell for body building training, the friction sleeve can increase the friction between the user's hand and the mounting shaft, prevent the dumbbell from sliding in the hand, improve the stability and safety of the user holding the dumbbell, and also help the user better control the movement direction and strength of the dumbbell.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] The utility model discloses a first locking ring and second locking ring cooperate to fix the position of dumbbell piece, and the first locking ring contacts the surface of dumbbell piece, and the first locking ring plays a primary location function to dumbbell piece, and the second locking ring cooperates with the limiting disc on the first locking ring through movable rod, limiting buckle and positioning hole structure, so that the first locking ring does not rotate, thereby firmly fixing dumbbell piece, and through the primary location of the first locking ring and the reinforcing location of the second locking ring, effectively prevent dumbbell piece from shaking, whether in daily fitness activities or in various fitness actions, dumbbell piece can stably keep in the given position. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the whole structure schematic diagram of the utility model;

[0020] Figure 2 It is the structure schematic diagram of the blocking ring of the utility model;

[0021] Figure 3 It is the structure schematic diagram of the positioning hole of the utility model;

[0022] Figure 4 It is the structure schematic diagram of the second locking ring of the utility model;

[0023] Figure 5 It is the structure schematic diagram of the limiting buckle of the utility model.

[0024] Main symbol explanation:

[0025] 1, mounting shaft;2, dumbbell piece;3, first locking ring;4, limiting disc;5, second locking ring;6, movable rod;7, built-in slot;8, extension spring;9, limiting buckle;10, positioning hole;11, circular slide groove;12, blocking ring;13, friction sleeve. DETAILED DESCRIPTION

[0026] Below, combining the drawings and specific implementation, the utility model is further described, and it is explained that under the premise of not conflicting, the following described each embodiment or each technical feature can be combined to form a new embodiment.

[0027] Embodiment:

[0028] Please combine Figures 1-5 The adjustable weight dumbbell of the embodiment comprises a mounting shaft 1, a plurality of dumbbell plates 2 are arranged at both ends of the mounting shaft 1, a first locking ring 3 is threadedly connected to each end of the mounting shaft 1, a limiting disc 4 is fixedly connected to the surface of the first locking ring 3, a circular sliding groove 11 is formed in the surface of the limiting disc 4, a second locking ring 5 is threadedly connected to the surface of the mounting shaft 1, movable rods 6 are fixedly connected to the two sides of the second locking ring 5, an internal groove 7 is formed in the surface of the movable rod 6, a telescopic spring 8 is fixedly connected to the inside of the internal groove 7, a limiting buckle 9 is fixedly connected to the surface of the telescopic spring 8, positioning holes 10 are formed in the two sides of the surface of the limiting disc 4, and the limiting buckle 9 is clamped in the inside of the positioning hole 10. When the second locking ring 5 is installed, the movable rod 6 moves towards the limiting disc 4 in the process of rotating the second locking ring 5, and because the movable rod 6 is matched with the circular sliding groove 11, the movable rod 6 can enter the sliding groove. When entering, the limiting buckle 9 is retracted into the internal groove 7 under the action of the telescopic spring 8 due to the pressure of the inner wall of the sliding groove. Continue to rotate the second locking ring 5, and the movable rod 6 rotates in the circular sliding groove 11. When reaching the position of the positioning hole 10, the limiting buckle 9 is clamped into the positioning hole 10 under the action of spring return, so that the second locking ring 5 is installed on the mounting shaft 1, the limiting buckle 9 positions the limiting disc 4 and the first locking ring 3, the position of the first locking ring 3 is fixed, thereby fixing the position of the dumbbell plate 2, and avoiding the dumbbell plate 2 from falling during exercise.

[0029] The movable rod 6 is rotatably connected to the inside of the circular sliding groove 11, the movable rod 6 is matched with the circular sliding groove 11, and the movable rod 6 is rotatably connected to the inside of the circular sliding groove 11 and matched, which enables the movable rod 6 to move smoothly in the circular sliding groove 11 in the process of rotation.

[0030] The positioning hole 10 is matched with the limiting buckle 9, and when the movable rod 6 is rotated to the appropriate position, the matched positioning hole 10 and limiting buckle 9 can accurately realize clamping, so that the second locking ring 5 can be fixed on the mounting shaft 1, and the limiting disc 4 and the first locking ring 3 are positioned to fix the position of the dumbbell plate 2.

[0031] The surface of the first locking ring 3 is in contact with the dumbbell plate 2, and the mounting shaft 1 is fixedly connected with a blocking ring 12 on both sides. The surface of the first locking ring 3 is in contact with the dumbbell plate 2, so that the first locking ring 3 can directly block the dumbbell plate 2, and the blocking ring 12 on both sides of the mounting shaft 1 further limits the position of the dumbbell plate 2.

[0032] The dumbbell plate 2 is located in the middle of the first locking ring 3 and the blocking ring 12, and the dumbbell plate 2 is located in the middle of the first locking ring 3 and the blocking ring 12. This structural design can limit the movement of the dumbbell plate 2 from multiple directions, and ensure the stability of the dumbbell during use.

[0033] The middle part of the mounting shaft 1 is fixedly connected with a friction sleeve 13, which can increase the friction force when the user holds the dumbbell, and can prevent the dumbbell from slipping in the hand, thereby improving the safety and comfort of use.

[0034] The implementation principle of the adjustable weight dumbbell in the embodiment of the application is as follows: first, a person puts the corresponding dumbbell piece 2 on both ends of the mounting shaft 1 according to the actual weight requirement, the dumbbell piece 2 is limited in the area between the blocking ring 12 and the end of the mounting shaft 1, then the first locking ring 3 is threadedly connected on both ends of the mounting shaft 1, so that the surface of the first locking ring 3 is in contact with the dumbbell piece 2, thereby limiting and fixing the dumbbell piece 2, and the limiting disc 4 fixedly connected on the first locking ring 3 is also installed in place, then the person starts to install the second locking ring 5, and rotates the second locking ring 5, since the mounting shaft 1 and the second locking ring 5 are threadedly connected, during the rotation process, the movable rod 6 fixedly connected on both sides of the second locking ring 5 moves towards the limiting disc 4, because the movable rod 6 is matched with the circular sliding groove 11 on the surface of the limiting disc 4, the movable rod 6 can smoothly enter the circular sliding groove 11, and when entering the circular sliding groove 11, the limiting buckle 9 in the built-in groove 7 on the surface of the movable rod 6 is retracted into the built-in groove 7 under the action of the extension spring 8, the second locking ring 5 is continuously rotated, at this time, the movable rod 6 continuously rotates in the circular sliding groove 11, when the movable rod 6 rotates to the position of the positioning hole 10 on the surface of the limiting disc 4, since the positioning hole 10 is in a penetrating state, the limiting buckle 9 is clamped into the positioning hole 10 under the reset of the extension spring 8, so that the second locking ring 5 is successfully installed on the mounting shaft 1, and the limiting buckle 9 positions the limiting disc 4 and the first locking ring 3 connected on the surface of the limiting disc 4, so that the first locking ring 3 cannot rotate, thereby fixing the position of the dumbbell piece 2, and preventing the dumbbell piece 2 from falling in the subsequent fitness process, when the user uses the dumbbell to perform fitness actions, the user holds the middle part of the mounting shaft 1, since the middle part of the mounting shaft 1 is fixedly connected with the friction sleeve 13, the friction sleeve 13 increases the friction force when the user holds the dumbbell, thereby preventing the dumbbell from slipping in the hand, and improving the safety and comfort of use.

[0035] The above embodiment is only a preferred embodiment of the application, and cannot be used to limit the protection scope of the application, and any non-essential changes and replacements made by those skilled in the art on the basis of the application all belong to the protection scope of the application.

Claims

1. An adjustable weight dumbbell, characterized by, The utility model relates to a dumbbell with locking function, including installation axle (1), both ends of installation axle (1) are provided with a plurality of dumbbell piece (2), both ends of installation axle (1) are threadedly connected with first locking ring (3), the surface of first locking ring (3) is fixedly connected with limiting disc (4), the surface of limiting disc (4) is equipped with circular slide groove (11), the surface of installation axle (1) is threadedly connected with second locking ring (5), both sides of second locking ring (5) are fixedly connected with movable rod (6), the surface of movable rod (6) is equipped with built-in groove (7), the inside of built-in groove (7) is fixedly connected with telescopic spring (8), the surface of telescopic spring (8) is fixedly connected with limiting buckle (9), both sides of limiting disc (4) surface are equipped with positioning hole (10), limiting buckle (9) is clamped in the inside of positioning hole (10).

2. A weight-adjustable dumbbell as recited in claim 1, wherein: The movable rod (6) is rotatably connected in the circular slide groove (11), and the movable rod (6) is matched with the circular slide groove (11).

3. A weight-adjustable dumbbell as recited in claim 1, wherein: The positioning hole (10) is matched with the limiting buckle (9).

4. A weight-adjustable dumbbell as recited in claim 1, wherein: The surface of the first locking ring (3) is in contact with the dumbbell piece (2), and the two sides of the installation axle (1) are fixedly connected with the blocking ring (12).

5. A weight-adjustable dumbbell as recited in claim 1, wherein: The dumbbell piece (2) is located in the middle of the first locking ring (3) and the blocking ring (12).

6. A weight-adjustable dumbbell as recited in claim 1, wherein: The middle of the installation axle (1) is fixedly connected with the friction sleeve (13).

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