Rotary positioning type dumbbell combined structure and dumbbell

Abstract

The utility model discloses a rotary positioning type dumbbell combined structure and a dumbbell adopting the combined structure, the rotary positioning type dumbbell combined structure comprises a dumbbell piece body, and at least one of radial protrusions or radial grooves is arranged on the left side face and the right side face of the dumbbell piece body; the radial groove is matched with the radial bulge; according to the utility model, the positioning bulge is arranged in the radial groove; the radial protrusion is provided with a radial elastic piece, and the radial elastic piece is provided with a positioning groove facing the positioning protrusion. By means of the structural arrangement, when the radial protrusions and the radial grooves are connected in an inserted mode and screwed in a suspended mode, the positioning protrusions extrude the radial elastic pieces to deform, locking positioning is achieved through insertion matching of the positioning grooves and the positioning protrusions after elastic force is overcome, and the dumbbell piece body combined in a suspended mode can be prevented from loosening under the condition that no external force exists through locking positioning.

Description

Technical Field

[0001] The utility model belongs to the technical field of sports equipment, and particularly relates to a rotary positioning dumbbell combination structure and a dumbbell. Background Art

[0002] Dumbbells are a common equipment for arm training. During use, in order to adjust the weight of the dumbbells, the most common method is to add or remove dumbbell plates by plugging or screwing.

[0003] The disadvantages of users using the threaded suspension method to add or remove dumbbell plates are: low operating efficiency, and the dumbbell plates after suspension are easy to loosen during continuous use or shaking, posing a safety hazard. The loosened dumbbell plates will shake as a whole, affecting the user experience.

[0004] When users use the plug-in method to add or remove dumbbell plates, they can refer to the product structure disclosed in the utility model patent with patent number 2022205212694. The disadvantage of this structure is that the plug-in structure and the switch structure are easy to loosen, and there will be a safety problem of the dumbbell plates loosening; the applicant applied for a dumbbell plate fixing method combining a rotary clamp and a top lock in April 2024. When adding or removing dumbbell plates with a dumbbell of this structure, it is necessary to combine the hanging twisting action with the horizontal switch driving action. The operation is relatively cumbersome and there is still room for improvement.

[0005] Based on consumer feedback, technical developers in this field need to further improve the dumbbell plate locking structure based on the existing rotatable and detachable dumbbell plates. The purpose is to remove the horizontal locking structure and directly position the dumbbell plates through the rotating structure, so as to solve new technical problems encountered in the existing technology. Utility Model Content

[0006] In order to overcome the shortcomings of the existing technology, this patent application discloses a rotationally positioned dumbbell combination structure and a dumbbell. The dumbbell plates adopt an independent suspended and locked structure, and an elastic positioning component is provided on the suspended and locked structure. The purpose of the improvement is to improve the operational convenience and safety of the dumbbell after assembly.

[0007] To achieve the above technical objectives, the present invention adopts the following specific solutions: a rotary positioning dumbbell assembly structure, which includes a dumbbell plate body, and at least one of a radial protrusion or a radial groove is provided on the left and right side surfaces of the dumbbell plate body;

[0008] The radial groove and the radial protrusion are matched; the outer end surface of the radial groove is evenly provided with two or more groove end axial blocking plates, and the inner side of the groove end axial blocking plates is provided with an inner plug-in groove; the outer end surface of the radial protrusion is evenly provided with two or more protrusion end axial blocking plates, and the inner side of the protrusion end axial blocking plates is provided with an outer plug-in groove;

[0009] A positioning protrusion is provided in the radial groove; a radial spring piece is provided on the radial protrusion, a positioning groove is provided on the radial spring piece facing the positioning protrusion, and a first anti-slip protrusion and a second anti-slip protrusion are respectively provided on the left and right sides of the positioning groove.

[0010] A fixing frame is provided inside the dumbbell plate body, an elastic component is radially fixed inside the fixing frame, and an end portion of the elastic component contacts the radial spring piece and applies force to the radial spring piece.

[0011] The radial spring piece and the radial protrusion are designed as an integrated whole. A blocking portion is provided on the side panel where the radial protrusion is provided, and the blocking portion is used to achieve blocking and limiting of the outer side surface of the radial spring piece.

[0012] A positioning gap is provided between the positioning protrusion and the axial blocking plate at the end of the groove, and the positioning gap is plugged and matched with the first anti-slip protrusion at the edge of the positioning groove.

[0013] An inner radial baffle is provided at the end of the inner plug-in slot.

[0014] An outer radial baffle is provided at the end of the outer plug-in slot.

[0015] A dumbbell includes a handle, with a plurality of dumbbell plates symmetrically fixed on both sides of the handle, wherein the outer surface of the inner dumbbell plate directly fixed to the handle is provided with one of a radial protrusion or a radial groove; the inner surface of the end dumbbell plate is provided with one of a radial protrusion or a radial groove; the outer surface of the inner dumbbell plate matches the inner surface of the end dumbbell plate;

[0016] A plurality of middle dumbbell piece bodies located between the inner dumbbell piece body and the end dumbbell piece body are respectively provided with radial protrusions and radial grooves on the left and right side surfaces.

[0017] A screw mark is provided on the radial groove and the radial protrusion or on one of the radial groove and the radial protrusion, and the screw mark is used to guide the operator to screw and lock.

[0018] The beneficial effects of the present invention are as follows: the present invention discloses a rotational positioning dumbbell combination structure and a dumbbell using the combination structure, the rotational positioning dumbbell combination structure includes a dumbbell plate body, at least one of a radial protrusion or a radial groove is provided on the left and right side surfaces of the dumbbell plate body; the radial groove and the radial protrusion are matched; the present invention provides a positioning protrusion in the radial groove; a radial spring piece is provided on the radial protrusion, and a positioning groove is provided on the radial spring piece facing the positioning protrusion. With the above structural arrangement, when the radial protrusion and the radial groove are plugged and screwed together, the positioning protrusion is squeezed and deformed by the positioning protrusion, and after overcoming the elastic force, the positioning groove and the positioning protrusion are plugged and matched to achieve locking positioning. This locking positioning can prevent the dumbbell plate body from loosening in the absence of external force after the suspension and screwing.

[0019] The utility model arranges the locking positioning structure inside the radial protrusion and the radial groove. When used on a dumbbell, the positioning and locking can be achieved simultaneously when two adjacent dumbbell plates are suspended and twisted together, thereby avoiding the need for an external locking mechanism and being more convenient to operate than the existing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the internal structure of the radial groove on the dumbbell plate body;

[0021] Figure 2 Schematic diagram of the internal structure of the radial protrusion on the dumbbell plate body;

[0022] Figure 3 This is a schematic diagram of the radial spring reset drive structure;

[0023] Figure 4 Schematic diagram of the dumbbell combination structure;

[0024] In the accompanying drawings, 1, dumbbell piece body, 11, buckle protrusion, 12, blocking portion, 13, middle dumbbell piece body, 14, inner dumbbell piece body, 15, end dumbbell piece body, 2, side panel I, 21, radial groove, 22, screw mark, 23, Buckle slot, 3. Side panel II, 31. Radial protrusion, 4. Axial blocking plate at the groove end, 41. Inner plug-in groove, 42. Inner radial baffle, 5. Positioning protrusion, 51. Positioning gap, 6. Axial blocking plate at the protrusion end, 61. Outer plug-in groove, 62. Outer radial baffle, 7. Radial spring piece, 71. Positioning groove, 72. First anti-slip protrusion, 73. Second anti-slip protrusion, 74. Force-applying surface, 8. Fixed frame, 81. Spring fixing compartment, 82. Spring, 9. Handle. DETAILED DESCRIPTION

[0025] The present invention is described in detail below through specific embodiments. However, it should be noted that the following specific implementation methods do not impose technical limitations on the present technical solution. Those skilled in the art can make further technical extensions under the guidance of the following technical solution.

[0026] It should be noted that in the description of the embodiments of the present invention, the terms "radial," "axial," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the embodiments of the present invention and to simplify the description. They do not indicate or imply that the devices referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limitations on the embodiments of the present invention. Furthermore, the terms "first" and "second" are used solely to rank the number of components and should not be construed as indicating or implying relative importance.

[0027] Example 1:

[0028] A rotary positioning dumbbell combination structure, as shown in the attached Figure 1 、 2 As shown in FIG. 3 , it includes a dumbbell plate body 1 , and at least one of a radial protrusion 31 or a radial groove 21 is provided on the left and right sides of the dumbbell plate body 1 ; the radial groove 21 and the radial protrusion 31 are matched.

[0029] In practical applications, such as Figure 4 In the dumbbell, only one of the radial protrusions 31 or the radial grooves 21 is provided on the two inner dumbbell plate bodies 14 arranged on the left and right sides of the handle 9; only one of the radial protrusions 31 or the radial grooves 21 is provided on the two end dumbbell plate bodies 15 located at the ends of the dumbbell; and on the plurality of middle dumbbell plates 13, radial protrusions 31 and radial grooves 21 are respectively provided on the left and right side surfaces.

[0030] The two sides of the dumbbell body 1 are respectively provided with a side panel Ⅰ2 and a side panel Ⅱ3. Figure 3 As shown, a snap groove 23 is provided on the outer diameter of the side panel I2 and the side panel II3, and a plurality of snap protrusions 11 are correspondingly provided on the dumbbell plate body 1, and the combination of the two is achieved by docking the snap groove 23 with the plurality of snap protrusions 11.

[0031] In embodiment 1, a radial groove 21 is provided at the axis center of the side panel I2, as shown in FIG. Figure 1 、 3As shown, two groove end axial blocking plates 4 are evenly distributed on the outer end surface of the radial groove 21, and an inner plug-in groove 41 is provided on the inner side of the groove end axial blocking plate 4. The end of the inner plug-in groove 41 is provided with an inner radial baffle 42. This structure can form an inner plug-in groove 41 with a single end opening on the inner side of the groove end axial blocking plate 4, and when the radial groove 21 and the radial protrusion 31 are screwed and locked, fixed-point locking can be achieved, and there will be no loosening after hanging and screwing.

[0032] like Figure 2 、 3 As shown, corresponding to the radial grooves 21, two protrusion-end axial blocking plates 6 are evenly distributed on the outer end surface of the radial protrusion 31. The inner side of the protrusion-end axial blocking plates 6 is provided with an outer plug-in groove 61. The end of the outer plug-in groove 61 is provided with an outer radial blocking plate 62, which has the same function as the inner radial blocking plate 42.

[0033] The improvement of the present invention is that: Figure 1 As shown, a positioning protrusion 5 is provided in the radial groove 21; a radial spring piece 7 is provided on the periphery of the radial protrusion 31, and a positioning groove 71 is provided on the radial spring piece 7 facing the positioning protrusion. The positioning protrusion 5 cooperates with the positioning groove 71 to achieve locking. When engaging and disengaging, the radial elastic force on the radial spring piece 7 needs to be overcome.

[0034] In this embodiment, in order to ensure smooth locking of the positioning protrusion 5 and the positioning groove 71, the positioning protrusion 5 adopts a cylindrical structure, the positioning groove 71 is arranged in an arc shape, and a first anti-slip protrusion 72 and a second anti-slip protrusion 73 are respectively provided on the left and right sides of the positioning groove 71.

[0035] When two adjacent dumbbell plate bodies 1 are combined, the radial grooves 21 and radial protrusions 31 on the adjacent dumbbell plates 3 correspond coaxially and are radially staggered to achieve axial insertion. The groove end axial blocking plate 4 is screwed into the outer plug-in groove 61, and the protrusion end axial blocking plate 6 is synchronously screwed into the inner plug-in groove 41. When the screwing state reaches the point where the inner radial baffle 42 and the outer radial baffle 62 are squeezed into one, the two are combined. During this process, the positioning protrusion 5 is synchronously locked with the positioning groove 71 to achieve positioning locking. The positioning protrusion 5 squeezes the first anti-slip protrusion 72 to offset the elastic force of the radial spring piece 7 and then falls into the positioning groove 71. When separated, the positioning protrusion 5 squeezes the first anti-slip protrusion 72 to offset the elastic force of the radial spring piece 7 and then slides out of the positioning groove 71.

[0036] This structure is more stable than the plug-in structure in the prior art. At the same time, the axial switch on the outer diameter can be removed. The connection of the dumbbell body is achieved through the combination of the radial groove 21 and the radial protrusion 31, and the positioning protrusion 5 is locked with the positioning groove 71.

[0037] Based on the above structure, the present invention further designs both the groove-end axial blocking plate 4 and the protrusion-end axial blocking plate 6 to have a gradually varying thickness structure, with the thickness gradually increasing from the radial end to the radial interior of the blocking plate body. The blocking plate body herein refers to the groove-end axial blocking plate 4 and the protrusion-end axial blocking plate 6 themselves. This structural arrangement allows the groove-end axial blocking plate 4 and the protrusion-end axial blocking plate 6 to become increasingly tighter as they are screwed together, further enhancing the secure connection between the two.

[0038] In this embodiment, the radial spring piece 7 has a certain restoring elastic force. When the radial spring piece 7 is provided, it is designed as an integral part with the radial protrusion 31. A blocking portion 12 is provided on the side panel II3 where the radial protrusion 31 is provided. The blocking portion 12 realizes the blocking and limiting of the outer side of the radial spring piece 7. The dumbbell body 1 is provided with a fixing frame 8 inside. A spring fixing chamber 81 is radially provided inside the fixing frame 8. A spring 82 is fixed in the spring fixing chamber 81. The radial spring piece 7 is provided with a force-applying surface 74 that is in pressurized contact with the end of the spring 82.

[0039] A positioning gap 51 is provided between the radial spring piece and the axial blocking plate 4 at the slot end. The positioning gap 51 is plugged and matched with the first anti-slip protrusion 72 at the edge of the positioning slot 71 .

[0040] Example 2:

[0041] A dumbbell adopts the above-mentioned rotating positioning dumbbell combination structure.

[0042] like Figure 4 As shown, it includes a handle 9, and a plurality of dumbbell plate bodies 1 are symmetrically fixed on both sides of the handle 9. A radial groove 21 is provided on the outer side of the inner dumbbell plate body 14 directly fixed to the handle; a radial protrusion 31 is provided on the inner side of the end dumbbell plate body 15;

[0043] A plurality of middle dumbbell plate bodies 13 located between the inner dumbbell plate body 14 and the end dumbbell plate body 15 are provided with radial protrusions 31 and radial grooves 21 on the left and right side surfaces, respectively.

[0044] A screw mark 22 is provided in the radial groove 21 , and the utility model guides the operator to screw and lock through the screw mark 22 .

[0045] It is easier for those skilled in the art to observe and clearly identify the screwing direction based on the screwing mark 22 , thereby further guiding the operator to assemble multiple dumbbell plate bodies 1 .

Claims

1. A rotary positioning dumbbell combination structure, characterized by: The dumbbell plate comprises a dumbbell plate body, and at least one of a radial protrusion and a radial groove is provided on the left and right sides of the dumbbell plate body; The radial groove and the radial protrusion are matched; the outer end surface of the radial groove is evenly provided with two or more groove end axial blocking plates, and the inner side of the groove end axial blocking plates is provided with an inner plug-in groove; the outer end surface of the radial protrusion is evenly provided with two or more protrusion end axial blocking plates, and the inner side of the protrusion end axial blocking plates is provided with an outer plug-in groove; A positioning protrusion is provided in the radial groove; a radial spring piece is provided on the radial protrusion, a positioning groove is provided on the radial spring piece facing the positioning protrusion, and a first anti-slip protrusion and a second anti-slip protrusion are respectively provided on the left and right sides of the positioning groove.

2. The rotary positioning dumbbell assembly structure according to claim 1, characterized in that: A fixing frame is provided inside the dumbbell plate body, an elastic component is radially fixed in the fixing frame, and an end of the elastic component contacts the radial spring piece and applies force to the radial spring piece.

3. The rotary positioning dumbbell assembly structure according to claim 1, characterized in that: The radial spring piece and the radial protrusion are designed as an integrated whole. A blocking portion is provided on the side panel where the radial protrusion is provided, and the blocking portion is used to achieve blocking and limiting of the outer side surface of the radial spring piece.

4. The rotary positioning dumbbell assembly structure according to claim 1, characterized in that: A positioning gap is provided between the positioning protrusion and the axial blocking plate at the end of the groove, and the positioning gap is plugged and matched with the first anti-slip protrusion at the edge of the positioning groove.

5. The rotary positioning dumbbell assembly structure according to claim 1, characterized in that: An inner radial baffle is provided at the end of the inner plug-in slot.

6. The rotary positioning dumbbell assembly structure according to claim 1, characterized in that: The end of the outer plug-in slot is provided with an outer radial baffle.

7. A dumbbell, characterized in that: The rotary positioning dumbbell assembly structure as claimed in any one of claims 1 to 6 is adopted between the middle dumbbell plate body, the inner dumbbell plate body and the end dumbbell plate body.

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