Dumbbell piece fixing structure for dumbbell

Abstract

The utility model discloses a dumbbell piece fixing structure for a dumbbell, which belongs to the technical field of sports equipment and comprises a dumbbell rod, threads are arranged on the outer surfaces of two sides of the dumbbell rod, and two symmetrically distributed fixing blocks are fixedly connected to the outer surface of the dumbbell rod. A first dumbbell piece and a second dumbbell piece are in threaded connection between the fixing blocks and the threads, locking nuts are in threaded connection with the parts, located on the threads, of the two sides of the dumbbell rod, and by introducing the first fixing assembly and the second fixing assembly, multiple fixing mechanisms are added on the basis of traditional threaded connection; according to the first fixing assembly, the clamping columns and the limiting columns are matched with the dumbbell pieces and notches and clamping grooves of the fixing blocks, the dumbbell pieces are effectively prevented from loosening and rotating in the long-time use or high-intensity movement, and the use safety is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sports equipment more particularly, relate to a dumbbell piece fixed structure for dumbbell. BACKGROUND

[0002] Dumbbell as a common fitness equipment, mainly by dumbbell piece, dumbbell rod and dumbbell piece fixing device constitute, dumbbell piece is the important component of dumbbell, is used to provide different weight selection, to adapt to the fitness needs of different users. Dumbbell rod is the support structure of dumbbell, and the dumbbell piece is installed on the dumbbell rod through the fixing device, thereby forming a complete dumbbell.

[0003] The patent with publication number CN215195233U discloses a dumbbell, relating to the technical field of sports equipment. It includes a holding rod and dumbbell piece assemblies arranged at both ends of the holding rod, which are detachably connected to the holding rod. The dumbbell piece assembly includes a detachably connected fixed plate and cover plate, and a receiving cavity is formed between the fixed plate and the cover plate. The receiving cavity contains a counterweight. The utility model provides a dumbbell that can meet the needs of users for training with multiple weights by replacing counterweights of different weights. The overall structure is simple, easy to disassemble and assemble, and the utility of a single dumbbell is higher.

[0004] Although the device has many benefits, it still has the following problems: although the dumbbell can meet the needs of users for training with multiple weights by replacing counterweights of different weights, the dumbbell piece fixing device usually uses a threaded nut or similar fastener to cooperate with a threaded groove or a clamping groove on the dumbbell rod to achieve locking function. However, this fixing method has some problems. The threaded nut is prone to looseness during long-term use or dumbbell swinging, which may cause the dumbbell piece to fall off or rotate, posing a safety hazard to the user. UTILITY MODEL CONTENTS

[0005] (I) Technical problem solved

[0006] In view of the deficiencies of the prior art, the utility model provides a dumbbell piece fixing structure for dumbbell, which solves the above problems.

[0007] (II) Technical scheme

[0008] To achieve the above purpose, the utility model provides the following technical scheme: a dumbbell piece fixing structure for dumbbell, including dumbbell rod, the both sides outer surfaces of dumbbell rod are all provided with screw threads, the outer surface of dumbbell rod is fixedly connected with two symmetrical fixed blocks, first dumbbell piece and second dumbbell piece are all screw connected between fixed block and screw thread, the both sides of dumbbell rod are all screw connected with locking nuts in the part of screw thread, further including:

[0009] The first fixing assembly is arranged on the outer surface of the fixing block and is used for connecting the fixing block and the second dumbbell piece.

[0010] The second fixing assembly is arranged between the first dumbbell piece and the second dumbbell piece and is used for connecting the first dumbbell piece and the second dumbbell piece.

[0011] Preferably, the first fixing assembly comprises a connecting seat, a clamping column, a limiting column and a notch, the fixing block is internally fixedly connected with two symmetrically distributed connecting seats, the connecting seat is movably connected with a clamping column in the inside, the outer surface of the connecting seat close to the second dumbbell piece is provided with a notch penetrating through the outer surface of the connecting seat, the outer surface of the clamping column is fixedly connected with a limiting column, and the limiting column is movably connected with the corresponding notch.

[0012] Preferably, the outer surface of the connecting seat close to the second dumbbell piece is provided with a clamping groove, and the clamping groove is movably contacted with the corresponding limiting column.

[0013] Preferably, the outer surface of the second dumbbell piece close to the fixing block is provided with a plurality of annular equidistantly distributed insertion holes, and the clamping column is inserted into the corresponding insertion hole.

[0014] Preferably, the second fixing assembly comprises a connecting column, a connecting block, a movable slot and a spring, the outer surface of the first dumbbell piece close to the second dumbbell piece is fixedly connected with two symmetrically distributed connecting blocks, the outer surface of the connecting block is provided with a movable slot on both sides, the inside of the movable slot is elastically connected with a spring, the inside of the movable slot is movably connected with a connecting column, and the spring is located in the inside of the corresponding connecting column.

[0015] Preferably, the second fixing assembly further comprises a through hole and a connecting slot, the outer surface of the second dumbbell piece close to the first dumbbell piece is provided with two symmetrically distributed connecting slots, the outer surface of the second dumbbell piece is provided with two through holes penetrating through the connecting slots, and the connecting column is inserted into the corresponding through hole.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the utility model provides a dumbbell piece fixing structure for dumbbell, has the following beneficial effects:

[0018] 1、the dumbbell piece fixing structure for dumbbell, through the introduction first fixing assembly and second fixing assembly, this design increases multiple fixed mechanism on the basis of traditional screw connection, first fixing assembly utilizes clamping column and limiting column and the notch and clamping groove of dumbbell piece and fixing block cooperation, effectively prevents the loosening and rotation of dumbbell piece in long time use or high intensity exercise, significantly improves the security of use.

[0019] 2、The dumbbell piece fixing structure for the dumbbell, through the second fixing assembly, the through hole and the connecting groove on the dumbbell piece are interacted through the connecting column, the close connection between the dumbbell pieces is further ensured, the stability can be kept even in the case of violent swinging, and the risk of the dumbbell piece falling off is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model;

[0021] Figure 2 It is a structural schematic diagram of the utility model Figure 1 It is an enlarged view of structure A in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the first fixing assembly of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the clamping groove of the utility model;

[0024] Figure 5 It is a structural schematic diagram of the plug-in hole of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the second fixing assembly of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the spring of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the connecting groove of the utility model.

[0028] In the drawing: 1, dumbbell rod; 2, thread; 3, first dumbbell piece; 4, second dumbbell piece; 5, fixed block; 6, connecting column; 7, connecting seat; 8, clamping column; 9, limiting column; 10, notch; 11, clamping groove; 12, plug-in hole; 13, through hole; 14, connecting block; 15, movable groove; 16, spring; 17, locking nut; 18, connecting groove. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0030] Please refer to Figures 1-8 The utility model provides a technical scheme:

[0031] A dumbbell piece fixing structure for a dumbbell, comprising a dumbbell rod 1, the outer surface of the two sides of the dumbbell rod 1 is provided with a thread 2, the outer surface of the dumbbell rod 1 is fixedly connected with two symmetrically distributed fixing blocks 5, the fixing block 5 and the thread 2 are threadedly connected with a first dumbbell piece 3 and a second dumbbell piece 4, the part of the two sides of the dumbbell rod 1 located at the thread 2 is threadedly connected with a locking nut 17, further comprising:

[0032] A first fixing assembly is located at the outer surface of the fixing block 5, for connecting the fixing block 5 and the second dumbbell piece 4;

[0033] A second fixing assembly is located between the first dumbbell piece 3 and the second dumbbell piece 4, for connecting the first dumbbell piece 3 and the second dumbbell piece 4, the dumbbell rod 1 is the main support structure of the dumbbell, the outer surface of the two sides of the dumbbell rod 1 is provided with a thread 2, the thread 2 is used for threadedly connecting with the dumbbell piece (the first dumbbell piece 3 and the second dumbbell piece 4) and the locking nut 17, the outer surface of the dumbbell rod 1 is further fixedly connected with two symmetrically distributed fixing blocks 5, the fixing block 5 not only provides additional structural support, but also serves as the installation basis of the first fixing assembly.

[0034] Further, the first fixing assembly comprises a connecting seat 7, a clamping column 8, a limiting column 9 and a notched opening 10, the inside of the fixing block 5 is fixedly connected with two symmetrically distributed connecting seats 7, the inside of the two connecting seats 7 is movably connected with a clamping column 8, the outer surface of the two connecting seats 7 close to the second dumbbell piece 4 is provided with a notched opening 10 penetrating the outer surface of the connecting seat 7, the outer surface of the two clamping columns 8 is fixedly connected with a limiting column 9, the two limiting columns 9 are movably connected with the corresponding notched openings 10, when the second dumbbell piece 4 is initially installed in place, the user can push the clamping column 8 to make it penetrate the connecting seat 7 and be inserted into the insertion hole 12 of the second dumbbell piece 4, and at the same time, the limiting column 9 also enters the notched opening 10.

[0035] Further, the outer surface of the two connecting seats 7 close to the second dumbbell piece 4 is provided with a clamping groove 11, the two clamping grooves 11 are movably contacted with the corresponding limiting columns 9, when the limiting column 9 penetrates the notched opening 10, the clamping column 8 is rotated to make the limiting column 9 change from vertical to horizontal and be located in the clamping groove 11, thereby providing additional fixing effect.

[0036] Further, the outer surface of the two second dumbbell pieces 4 close to the fixing block 5 is provided with a plurality of annular equidistantly distributed insertion holes 12, the two clamping columns 8 are inserted into the corresponding insertion holes 12 to make the clamping column 8 penetrate the connecting seat 7 and be inserted into the insertion hole 12 of the second dumbbell piece 4.

[0037] Further, the second fixing assembly comprises the connecting column 6, the connecting block 14, the movable slot 15 and the spring 16, the outer surfaces of the first dumbbell piece 3 and the second dumbbell piece 4 close to each other are fixedly connected with two symmetrically distributed connecting blocks 14, the outer surfaces of the two sides of the two connecting blocks 14 are both provided with the movable slot 15, the interiors of the four movable slots 15 are all elastically connected with the spring 16, the interiors of the four movable slots 15 are all slidably connected with the connecting column 6, the four springs 16 are located in the interiors of the corresponding connecting columns 6, when the two dumbbell pieces are placed together, the connecting block 14 enters into the connecting slot 18, in the process of the connecting block 14 moving inward, the connecting column 6 extrudes the spring 16, when the connecting column 6 contacts with the through hole 13, the spring 16 has no extrusion force at this time, and then the connecting column 6 passes through the through hole 13.

[0038] Further, the second fixing assembly further comprises the through hole 13 and the connecting slot 18, the outer surfaces of the first dumbbell piece 3 and the second dumbbell piece 4 close to each other are both provided with two symmetrically distributed connecting slots 18, the outer surface of the second dumbbell piece 4 is provided with two through holes 13 penetrating through the connecting slots 18, the four connecting columns 6 are inserted into the corresponding through holes 13, so that the connecting column 6 passes through the through hole 13, the connecting column 6 will be firmly kept in the connecting slot 18, thereby the two dumbbell pieces are tightly connected together.

[0039] Working principle: when the staff needs to use the dumbbell piece fixing structure for dumbbell, the dumbbell rod 1 is used as the main body support structure of the dumbbell, the outer surfaces of the two sides are provided with threads 2, the threads 2 are used for threaded connection with the dumbbell pieces (the first dumbbell piece 3 and the second dumbbell piece 4) and the locking nuts 17, the outer surfaces of the dumbbell rod 1 are further fixedly connected with two symmetrical fixed blocks 5, the fixed blocks 5 not only provide additional structural support, but also serve as the installation basis of the first fixing assembly, when installing the dumbbell pieces, the user first threadedly connects the first dumbbell piece 3 and the second dumbbell piece 4 to the two sides of the dumbbell rod 1 respectively until they are adjacent to the fixed blocks 5, in the process, since the threads 2 on the dumbbell rod 1 match the threaded holes in the dumbbell pieces, the dumbbell pieces can be firmly fixed on the dumbbell rod 1, the outer surfaces of the second dumbbell piece 4 close to the fixed blocks 5 are provided with a plurality of annular equidistant distribution insertion holes 12, when the second dumbbell piece 4 is initially installed in place, the user can push the clamping column 8 to make it pass through the connecting seat 7 and insert into the insertion hole 12 of the second dumbbell piece 4, at the same time, the limiting column 9 also enters the slot 10, when the limiting column 9 passes through the slot 10, the clamping column 8 is turned, so that the limiting column 9 changes from vertical to horizontal and is located in the clamping groove 11, providing additional fixing effect, when the two dumbbell pieces are placed together, the connecting block 14 enters the connecting groove 18, in the process of moving the connecting block 14 inward, the connecting column 6 extrudes the spring 16, when the connecting column 6 contacts the through hole 13, the spring 16 has no extrusion force at this time, so that the connecting column 6 passes through the through hole 13, the connecting column 6 is firmly retained in the connecting groove 18, so as to tightly connect the two dumbbell pieces together, in order to ensure that the dumbbell pieces do not loosen or fall off during use, the user can threadedly connect the locking nuts 17 on the two sides of the dumbbell rod 1 at the threaded connection part 2, the locking nuts 17 further press the dumbbell pieces on the dumbbell rod 1, providing additional fixing effect.

[0040] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A dumbbell plate fixing structure for dumbbells, comprising a dumbbell bar (1), characterized in that: The dumbbell bar (1) has threads (2) on both outer surfaces. Two symmetrically distributed fixing blocks (5) are fixedly connected to the outer surface of the dumbbell bar (1). A first dumbbell plate (3) and a second dumbbell plate (4) are threadedly connected between the fixing blocks (5) and the threads (2). Locking nuts (17) are threadedly connected to the portions of the dumbbell bar (1) on both sides of the thread (2). The dumbbell bar (1) also includes: The first fixing components are all located on the outer surface of the fixing block (5) and are used to connect the fixing block (5) and the second dumbbell plate (4); The second fixing components are located between the first dumbbell plate (3) and the second dumbbell plate (4) and are used to connect the first dumbbell plate (3) and the second dumbbell plate (4); The first fixing component includes a connecting seat (7), a snap-fit ​​post (8), a limiting post (9), and a slot (10). The fixing block (5) has two symmetrically distributed connecting seats (7) fixedly connected inside. The two connecting seats (7) are movably connected to the snap-fit ​​post (8) inside. The outer surfaces of the two connecting seats (7) that are close to the second dumbbell plate (4) are provided with slots (10) that penetrate the outer surface of the connecting seat (7). The outer surfaces of the two snap-fit ​​posts (8) are fixedly connected to the limiting post (9). The two limiting posts (9) are movably connected to the corresponding slots (10). The second fixing component includes a connecting post (6), a connecting block (14), a movable groove (15), and a spring (16). Two symmetrically distributed connecting blocks (14) are fixedly connected to the outer surfaces of the first dumbbell plate (3) and the second dumbbell plate (4). Movable grooves (15) are provided on both sides of the outer surfaces of the two connecting blocks (14). Springs (16) are elastically connected inside the four movable grooves (15). Connecting posts (6) are slidably connected inside the four movable grooves (15). The four springs (16) are located inside the corresponding connecting posts (6).

2. The dumbbell plate fixing structure for dumbbells according to claim 1, characterized in that: Both of the connecting seats (7) and the outer surface of the second dumbbell plate (4) are provided with snap-fit ​​grooves (11), and the two snap-fit ​​grooves (11) are in contact with the corresponding limiting post (9).

3. The dumbbell plate fixing structure for dumbbells according to claim 1, characterized in that: The outer surfaces of the two second dumbbell plates (4) that are close to the fixing block (5) are provided with multiple annularly distributed insertion holes (12), and the two locking pins (8) are inserted into the corresponding insertion holes (12).

4. The dumbbell plate fixing structure for dumbbells according to claim 1, characterized in that: The second fixing component also includes through holes (13) and connecting grooves (18). The outer surfaces of the second dumbbell plate (4) and the first dumbbell plate (3) are respectively provided with two symmetrically distributed connecting grooves (18). The outer surface of the second dumbbell plate (4) is provided with two through holes (13) that penetrate the connecting grooves (18). The four connecting posts (6) are inserted into the corresponding through holes (13).

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