Adjustable dumbbell with stable structure

Abstract

The utility model relates to the technical field of dumbbells, in particular to an adjustable dumbbell with a stable structure, which comprises a holding handle, transverse connecting rods are arranged at two ends of the holding handle, reinforcing ribs and a main dumbbell rod are arranged on the transverse connecting rods, a limiting baffle ring and an adjusting screw groove are arranged on the main dumbbell rod, an adjusting screw rod is in threaded connection with the inside of the adjusting screw groove, and the adjusting screw rod is in threaded connection with the limiting baffle ring. An adjusting screw rod is arranged on the holding handle, an auxiliary lengthened screw rod is arranged on the adjusting screw rod, an extrusion block is in threaded connection with the auxiliary lengthened screw rod, a hollow cavity is formed in the holding handle, a strength filler and a reinforcing frame are arranged in the hollow cavity, and an auxiliary rib plate is arranged on the reinforcing frame. According to the dumbbell, the structural stability of the holding handle on the dumbbell body is integrally improved, the auxiliary lengthened screw rod can be added and adjusted according to needs, then more required dumbbell pieces are added in a sleeving mode, the adjustability of the dumbbell rod on the dumbbell body is improved, and the structural stability between the transverse connecting rod and the main dumbbell rod is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dumbbells, in particular to an adjustable dumbbell with a stable structure. Background Art

[0002] The purpose of dumbbells is to be used for muscle strength training and muscle compound movement training. Patients with low muscle strength due to motor paralysis, pain, long-term inactivity, etc. can hold dumbbells and use the weight of the dumbbells to perform active resistance exercises to train muscle strength.

[0003] The dumbbell body is generally composed of a dumbbell bar, bell plates, and baffles, and a grip handle is set in the center of the dumbbell bar.

[0004] At present, the handles of the existing dumbbell bodies are used for a long time, which is prone to structural deformation, greatly reducing the structural stability of the handles on the dumbbell bodies. In addition, some strength exercisers need to add a large number of weight plates, but the length of the dumbbell bar is limited and cannot be adjusted, which greatly reduces the adjustability of the dumbbell bar on the dumbbell body.

[0005] The above problems are widespread and urgently need to be improved. Utility Model Content

[0006] The utility model aims to solve the above-mentioned shortcomings in the prior art and proposes an adjustable dumbbell with stable structure.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A structurally stable adjustable dumbbell is designed, comprising a gripping handle, transverse connecting rods are arranged at both ends of the gripping handle, the transverse connecting rods are provided with reinforcing ribs and a main dumbbell rod, the main dumbbell rod is provided with a limit ring and an adjusting screw groove, an adjusting screw is threadedly connected to the adjusting screw groove, a secondary extension screw is arranged on the adjusting screw, an extrusion block is threadedly connected to the secondary extension screw, a hollow cavity is arranged in the gripping handle, a strength filler and a reinforcement frame are arranged in the hollow cavity, and a secondary rib plate is arranged on the reinforcement frame.

[0009] Furthermore, the strength filler is filled in the hollow cavity, and the strength filler is a powdered granular silicon nitride filler, which has excellent structural strength and further improves the anti-deformation stability of the gripping handle.

[0010] Furthermore, the cross-section of the reinforcement frame is an X-shaped structure and is stably welded to the inner wall of the hollow cavity. The number of the auxiliary ribs is four and they are firmly welded to the corners of the X-shaped reinforcement frame. The auxiliary ribs and the reinforcement frame are both made of hard alloy steel with high strength and no deformation.

[0011] Furthermore, the cross-section of the reinforcing ribs is a triangular structure and the number is four symmetrical. The reinforcing ribs are arranged between the transverse connecting rod and the main dumbbell rod. The reinforcing ribs are made of 12Cr1 MoV alloy steel and have high strength and are not deformed.

[0012] Furthermore, the outer wall of the main dumbbell rod is provided with an external thread, and the extrusion block is provided with a screw hole. The extrusion block is threadedly connected to the auxiliary extension screw rod through the screw hole. The top view cross-section of the extrusion block is a regular hexagonal structure, which makes it convenient for fingers to rotate the extrusion block.

[0013] Furthermore, the outer diameter of the main dumbbell rod when viewed from above is the same as the outer diameter of the auxiliary extension screw when viewed from above, which not only enables the weight plates to be sleeved on both the main dumbbell rod and the auxiliary extension screw, but also enables the extrusion blocks to be threadedly connected to the main dumbbell rod and the auxiliary extension screw through the screw holes.

[0014] Furthermore, a rotating block is provided on the auxiliary extension screw, and a finger pressure groove is opened on the rotating block. The finger pressure groove is two arc-shaped grooves that are symmetrical on the left and right. The auxiliary extension screw can be easily driven to rotate by inserting fingers into the finger pressure grooves on both sides and rotating.

[0015] The utility model provides an adjustable dumbbell with a stable structure, which has the following beneficial effects:

[0016] 1. The utility model improves the structural stability of the handle on the dumbbell body as a whole by arranging a hollow cavity structure with a strength filler in the handle and arranging a reinforcement frame structure with secondary ribs in the hollow cavity.

[0017] 2. The utility model provides a transverse connecting rod with a main dumbbell rod on the gripping handle, and provides an external thread and an adjusting screw groove on the main dumbbell rod, and then provides a secondary extension screw structure with an adjusting screw in the adjusting screw groove. For people who do strength training, the secondary extension screw can be added and adjusted as needed, and then more weight plates can be installed as needed, thereby improving the adjustability of the dumbbell rod on the dumbbell body.

[0018] 3. The utility model further improves the structural stability between the transverse connecting rod and the main dumbbell rod by symmetrically arranging the reinforcing rib structure between the transverse connecting rod and the main dumbbell rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a vertical cross-sectional view of the overall structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 For the utility model Figure 1 Enlarged view of point B in the middle;

[0022] Figure 4 For the utility model Figure 1 View from point C in the middle;

[0023] Figure 5 For the utility model Figure 1 Enlarged view of point D in the middle.

[0024] In the figure: 1 transverse connecting rod; 11 reinforcing rib; 2 holding handle; 21 hollow cavity; 22 strength filling material; 3 reinforcement frame; 31 secondary rib plate; 4 main dumbbell bar; 41 limit retaining ring; 42 adjusting screw groove; 43 external thread; 5 adjusting screw; 6 secondary extension screw; 7 extrusion block; 71 screw hole; 8 rotation block; 81 finger pressure groove. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-5 A structurally stable adjustable dumbbell comprises a gripping handle 2, wherein transverse connecting rods 1 are arranged at both ends of the gripping handle 2, wherein the transverse connecting rod 1 is provided with reinforcing ribs 11 and a main dumbbell rod 4, wherein the main dumbbell rod 4 is provided with a limit ring 41 and an adjusting screw groove 42, wherein an adjusting screw 5 is threadedly connected to the adjusting screw groove 42, wherein a secondary extension screw 6 is arranged on the adjusting screw 5, wherein an extrusion block 7 is threadedly connected to the secondary extension screw 6, wherein a hollow cavity 21 is arranged in the gripping handle 2, wherein a strength filler 22 and a reinforcement frame 3 are arranged in the hollow cavity 21, wherein the reinforcement frame 3 is provided with a secondary rib plate 31.

[0027] In detail, the strength filler 22 is filled in the hollow cavity 21 . The strength filler 22 is a powdered granular silicon nitride filler with excellent structural strength, which further improves the anti-deformation stability of the gripping handle 2 .

[0028] Furthermore, the cross-section of the reinforcement frame 3 is an X-shaped structure and is stably welded to the inner wall of the hollow cavity 21. The number of the auxiliary ribs 31 is four and they are firmly welded to the corners of the X-shaped reinforcement frame 3. The auxiliary ribs 31 and the reinforcement frame 3 are both made of hard alloy steel, which has high strength and does not deform, and can be firmly welded to the hollow cavity 21 of the metal gripping handle 2. When the gripping handle 2 is gripped by external force, the X-shaped reinforcement frame 3 and the auxiliary ribs 31 structure arranged inside can improve the overall structural stability and strength of the gripping handle 2.

[0029] Furthermore, the cross-section of the reinforcing rib 11 is a triangular structure and there are four symmetrical reinforcing ribs 11. The reinforcing rib 11 is arranged between the transverse connecting rod 1 and the main dumbbell rod 4. The reinforcing rib 11 is made of 12Cr1 MoV alloy steel, which has high strength and no deformation, thereby greatly improving the structural stability between the transverse connecting rod 1 and the main dumbbell rod 4.

[0030] In more detail, the outer wall of the main dumbbell rod 4 is provided with an external thread 43, and the extrusion block 7 is provided with a screw hole 71. The extrusion block 7 is threadedly connected to the auxiliary extension screw 6 through the screw hole 71. The top view cross-section of the extrusion block 7 is a regular hexagonal structure. The regular hexagonal structure facilitates the fingers to rotate the extrusion block 7, and the extrusion block 7 is driven by the threaded transmission to extrude the bell plate, thereby ensuring the installation and limit stability of the bell plate.

[0031] In general, the outer diameter of the main dumbbell rod 4 when viewed from above is the same as the outer diameter of the auxiliary extension screw 6 when viewed from above, which not only enables the weight plates to be sleeved on the main dumbbell rod 4 and the auxiliary extension screw 6, but also enables the extrusion block 7 to be threadedly connected to the main dumbbell rod 4 and the auxiliary extension screw 6 through the screw hole 71.

[0032] Finally, the auxiliary extension screw 6 is provided with a rotating block 8, and the rotating block 8 is provided with a finger pressure groove 81. The finger pressure groove 81 is two arc-shaped grooves that are symmetrical on the left and right. The fingers are inserted into the finger pressure grooves 81 on both sides and rotated, which can conveniently drive the auxiliary extension screw 6 to rotate, thereby realizing the threaded connection of the auxiliary extension screw 6 to the adjusting groove 42 to realize threaded installation. At the same time, the overall length between the auxiliary extension screw 6 and the main dumbbell rod 4 can be adjusted by threaded rotation at a later stage to cooperate with the length adjustment required by the exerciser for exercise.

[0033] Working method: By arranging a hollow cavity 21 structure with a strength filler 22 in the gripping handle 2, and arranging a reinforcement frame 3 structure with secondary ribs 31 in the hollow cavity 21, the structural stability of the gripping handle 2 on the dumbbell body is improved as a whole.

[0034] Moreover, for people who do strength training, more weight plates are needed. In this case, the adjusting screw 5 with the auxiliary extension screw 6 can be threadedly connected to the adjusting screw groove 42, and then a certain number of weight plates can be sleeved on the main dumbbell rod 4 and the auxiliary extension screw 6 and pressed into contact with the limit ring 41, and then the extrusion block 7 is threadedly connected to the auxiliary extension screw 6 through the screw hole 71 until it is pressed into contact with the other end surface of the weight plate.

[0035] The above operation can be used to increase the auxiliary extension screw 6 and adjust it as needed, and then the required number of more weight plates can be added, thereby improving the adjustability of the dumbbell rod on the dumbbell body.

[0036] In addition, by symmetrically arranging the reinforcing ribs 11 between the transverse connecting rod 1 and the main dumbbell rod 4, the structural stability between the transverse connecting rod 1 and the main dumbbell rod 4 is further improved.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A structurally stable adjustable dumbbell, comprising a grip handle (2), characterized in that: The two ends of the gripping handle (2) are provided with transverse connecting rods (1), the transverse connecting rods (1) are provided with reinforcing ribs (11) and a main dumbbell rod (4), the main dumbbell rod (4) is provided with a limit ring (41) and an adjusting screw groove (42), the adjusting screw groove (42) is internally threadedly connected with an adjusting screw rod (5), the adjusting screw rod (5) is provided with a secondary extension screw rod (6), the secondary extension screw rod (6) is threadedly connected with an extrusion block (7), the gripping handle (2) is provided with a hollow cavity (21), the hollow cavity (21) is provided with a strength filler (22) and a reinforcement frame (3), and the reinforcement frame (3) is provided with a secondary rib plate (31).

2. The structurally stable adjustable dumbbell according to claim 1, characterized in that: The strength filler (22) is filled in the hollow cavity (21), and the strength filler (22) is a powdery granular silicon nitride filler.

3. The structurally stable adjustable dumbbell according to claim 1, characterized in that: The cross section of the reinforcement frame (3) is an X-shaped structure and is stably welded to the inner wall of the hollow cavity (21); the number of the secondary ribs (31) is four and they are stably welded to the corners of the X-shaped reinforcement frame (3).

4. The structurally stable adjustable dumbbell according to claim 1, characterized in that: The cross section of the reinforcing rib (11) is a triangular structure and the number of the reinforcing ribs is four symmetrical ones. The reinforcing ribs (11) are arranged between the transverse connecting rod (1) and the main dumbbell rod (4).

5. The structurally stable adjustable dumbbell according to claim 1, characterized in that: The outer wall of the main dumbbell rod (4) is provided with an external thread (43), the extrusion block (7) is provided with a screw hole (71), the extrusion block (7) is threadedly connected to the auxiliary extension screw rod (6) through the screw hole (71), and the top view cross section of the extrusion block (7) is a regular hexagonal structure.

6. The structurally stable adjustable dumbbell according to claim 1, characterized in that: The outer diameter of the main dumbbell rod (4) when viewed from above is the same as the outer diameter of the auxiliary extended screw rod (6) when viewed from above.

7. The structurally stable adjustable dumbbell according to claim 1, characterized in that: The auxiliary extension screw rod (6) is provided with a rotating block (8), and the rotating block (8) is provided with a finger pressure groove (81), and the finger pressure groove (81) is two arc-shaped grooves that are symmetrical on the left and right.

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