Dumbbell convenient for increasing dumbbell pieces

Abstract

The dumbbell comprises a dumbbell rod and a fastening sleeve, the middle of the dumbbell rod is fixedly connected with an anti-skid sleeve, the positions, close to the anti-skid sleeve, of the two ends of the dumbbell rod are symmetrically connected with balance weight discs, positioning grooves are symmetrically formed in the two ends of the dumbbell rod, and meanwhile through holes are formed in the middles of the dumbbell pieces. The inner side faces of the through holes are symmetrically connected with positioning blocks, the positioning blocks are slidably connected into the positioning grooves, the fastening sleeves are in threaded connection with the two ends of the dumbbell rod through threaded structures, the outer arc faces of the fastening sleeves are symmetrically connected with anti-skid blocks, and meanwhile transverse grooves and longitudinal grooves are formed in the surfaces of the anti-skid sleeves respectively. According to the dumbbell, the fastening sleeves, the positioning grooves, the positioning blocks and the dumbbell rod are matched, so that a plurality of groups of dumbbell pieces can be conveniently assembled and disassembled, and the assembling and disassembling efficiency of the dumbbell pieces is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fitness equipment, in particular to a dumbbell which is convenient for adding dumbbell plates. Background Art

[0002] Dumbbells are simple equipment used to enhance muscle strength training. They are mainly made of cast iron, and some are covered with a layer of rubber. They are used for muscle strength training and muscle compound movement training. In actual use, 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. Dumbbells can train a single muscle. If the weight is increased, the coordination of multiple muscles is required, and it can also be used as a muscle compound movement training.

[0003] After searching, a dumbbell for conveniently adding dumbbell plates is disclosed in the prior art (application number: CN202222439127.6). The article records that "it includes a dumbbell bar and dumbbell plates, a pair of counterweight plates are symmetrically fixedly installed on the dumbbell bar, the dumbbell plates are arranged on the outside of the counterweight plates, and there are multiple dumbbell plates. The innermost dumbbell plate is against the counterweight plate, and a threaded limiting sleeve is integrally formed on the side of the dumbbell plate facing the counterweight plate, and a threaded groove is opened on the other side of the dumbbell plate. The threaded limiting sleeves of the outer dumbbell plates of two adjacent counterweight plates are threadedly installed in the threaded groove of the inner dumbbell plate, and the middle part of the threaded limiting sleeve of each dumbbell plate is attached to and limited to the outer periphery of the dumbbell bar, the middle part of the dumbbell bar is provided with an anti-slip breathable part, and a positioning sleeve is provided on the outside of the outermost dumbbell plate."; The dumbbell is fixed by means of a threaded limiting sleeve and a threaded groove, and the threaded limiting sleeve on the outer dumbbell piece is screwed into the threaded groove of the inner dumbbell piece. After fixation, the positioning sleeve is screwed in, and so on. Multiple dumbbell pieces can be added at will, and during installation, the threads need to be tightened only when two dumbbell pieces are connected. Compared with screwing in from the beginning, the installation process can be simplified, and the dumbbell pieces can be added conveniently. At the same time, the wear on the dumbbell pieces is reduced and the service life is increased. However, when loading and unloading multiple dumbbell pieces, the user still needs to perform multiple screw connection processes, which makes the efficiency of the loading and unloading process of the dumbbell pieces need to be improved, and the dumbbell pieces will produce mutual friction on the threaded structures at both ends of the dumbbell rod during the sliding of the dumbbell pieces at the two ends of the dumbbell rod, which can easily increase the probability of wear of the threaded structures of the dumbbell pieces and the dumbbell rod. Utility Model Content

[0004] In order to overcome the defects of the prior art, a dumbbell which is convenient for adding dumbbell plates is provided to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, a dumbbell that is convenient for adding dumbbell plates is provided, comprising: a dumbbell rod and a fastening sleeve, the middle part of the dumbbell rod is fixedly connected to the anti-slip sleeve, and the positions of the two ends of the dumbbell rod near the anti-slip sleeve are symmetrically connected to the counterweight plate, and positioning grooves are symmetrically provided at the two ends of the dumbbell rod, and at the same time, a through hole is provided in the middle part of the dumbbell plate, and the inner side surface of the through hole is symmetrically connected to the positioning block, and the positioning block is slidably connected in the positioning groove, the fastening sleeve is screwed to the two ends of the dumbbell rod through a threaded structure, and the outer arc surface of the fastening sleeve is symmetrically connected to the anti-slip block, and at the same time, the surface of the anti-slip sleeve is respectively provided with transverse grooves and longitudinal grooves.

[0006] Preferably, the dumbbell rod is in a cylindrical structure as a whole, two groups of positioning grooves are symmetrically provided at both ends of the dumbbell rod, and the four groups of positioning grooves are all in a long strip structure, and threaded structures are provided at positions close to the positioning grooves at both ends of the dumbbell rod.

[0007] Preferably, the through hole opened in the middle of the dumbbell plate has a circular structure, and the diameter of the through hole is larger than the diameters of the two ends of the dumbbell rod, and the two groups of positioning blocks fixedly connected in the through hole both have a rectangular structure.

[0008] Preferably, there are two groups of fastening sleeves, both of which are in a circular ring structure, and the threaded structure opened on the inner arc surface of the fastening sleeve corresponds to the threaded structure opened at both ends of the dumbbell rod. At the same time, the end surfaces at both ends of the fastening sleeve are respectively fixedly connected to a group of buffer layers, and the buffer layers are in a circular ring structure.

[0009] Preferably, the outer arc surface of the fastening sleeve is circumferentially surrounded by four groups of anti-sliding blocks fixedly connected at equal intervals, and the four groups of anti-sliding blocks are all rectangular structures, and the cross-section of the anti-sliding blocks is an isosceles trapezoidal structure. At the same time, the length of the anti-sliding block is equal to the axial length of the fastening sleeve.

[0010] Preferably, the anti-slip sleeve has a cylindrical structure, and a plurality of transverse grooves are provided on the outer side of the anti-slip sleeve at equal intervals along the circumferential direction, and the transverse grooves are in the shape of long strips, and the length of the transverse grooves is equal to the axial length of the anti-slip sleeve. At the same time, the cross-section of the transverse grooves is in the shape of an isosceles trapezoid, and the size of the open end of the transverse grooves is larger than the size of the bottom.

[0011] Preferably, the outer side surface of the anti-slip sleeve is provided with multiple groups of longitudinal grooves at equal intervals along the axial direction, and the longitudinal grooves are in a circular ring structure, and the longitudinal grooves are interconnected with the transverse grooves, and the longitudinal grooves and the transverse grooves are combined together to form a tic-tac-toe structure on the outer side surface of the anti-slip sleeve.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: through the cooperation of the dumbbell rod, the fastening sleeve, the positioning groove and the positioning block, the dumbbell plates can be conveniently loaded and unloaded at both ends of the dumbbell rod, thereby improving the loading and unloading efficiency of the dumbbell plates. At the same time, the cooperation of the positioning groove and the positioning block can also avoid the problem of mutual contact between the threaded structure of the dumbbell plates and the dumbbell rod during the loading and unloading of the dumbbell plates, thereby effectively reducing the probability of wear of the threaded structure of the dumbbell plates and the dumbbell rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0014] Figure 2 It is a front view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 It is a side view schematic diagram of an embodiment of the utility model.

[0016] Figure 4 It is a schematic side view of the anti-slip sleeve according to an embodiment of the utility model.

[0017] In the figure: 1. dumbbell bar; 2. dumbbell plates; 3. weight plate; 4. anti-slip cover; 5. anti-sliding block; 6. fastening cover; 7. positioning groove; 8. horizontal groove; 9. positioning block; 10. vertical groove. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4 As shown, the utility model provides a dumbbell for conveniently adding dumbbell plates, comprising: a dumbbell rod 1 and a fastening sleeve 6, the middle part of the dumbbell rod 1 is fixedly connected to the anti-slip sleeve 4, and the positions of the two ends of the dumbbell rod 1 near the anti-slip sleeve 4 are symmetrically connected to the counterweight plate 3, and positioning grooves 7 are symmetrically provided at the two ends of the dumbbell rod 1, and at the same time, a through hole is provided in the middle part of the dumbbell plate 2, and the inner side surface of the through hole is symmetrically connected to the positioning block 9, and the positioning block 9 is slidably connected in the positioning groove 7, the fastening sleeve 6 is screwed to the two ends of the dumbbell rod 1 through a threaded structure, and the outer arc surface of the fastening sleeve 6 is symmetrically connected to the anti-slip block 5, and at the same time, the surface of the anti-slip sleeve 4 is respectively provided with a transverse groove 8 and a longitudinal groove 10.

[0019] In this embodiment, when the dumbbell plate 2 needs to be installed, the positioning block 9 of the dumbbell plate 2 is first aligned with the positioning groove 7, and then the dumbbell plate 2 is pushed so that the positioning block 9 can be embedded in the positioning groove 7, and the inner side surface of the dumbbell plate 2 and the threaded structures at both ends of the dumbbell rod 1 do not contact each other, so the corresponding number of dumbbell plates 2 can be quickly added to the two ends of the dumbbell rod 1 according to actual needs, and then the fastening sleeve 6 is screwed to the two ends of the dumbbell rod 1, and during the screwing process of the fastening sleeve 6, the fastening sleeve 6 will abut the surface of the dumbbell plate 2 through the buffer layer, so that the fastening sleeve 6, the dumbbell plate 2 and the counterweight plate 3 can abut each other, thereby quickly completing the weight adjustment of the dumbbell.

[0020] As a preferred embodiment, the dumbbell bar 1 is an overall cylindrical structure, two sets of positioning grooves 7 are symmetrically provided at both ends of the dumbbell bar 1, and the four sets of positioning grooves 7 are all long strip structures. At the same time, threaded structures are provided at the positions close to the positioning grooves 7 at both ends of the dumbbell bar 1.

[0021] In this embodiment, if Figure 1 , Figure 2and Figure 3 The axial length of the threaded structure opened at both ends of the dumbbell rod 1 is adapted to the length of the positioning groove 7, and then the positioning groove 7 and the threaded structure can cooperate with each other to limit the movement range of the fastening sleeve 6 and the dumbbell plate 2, and can also prevent the threaded structure from interfering with the installation of the counterweight plate 3.

[0022] As a preferred embodiment, the through hole opened in the middle of the dumbbell plate 2 is a circular structure, and the diameter of the through hole is larger than the diameter of the two ends of the dumbbell rod 1, and the two groups of positioning blocks 9 fixedly connected in the through hole are both rectangular structures.

[0023] In this embodiment, if Figure 2 and Figure 3 The size of the through hole is larger than that of the dumbbell rod 1, so that the dumbbell plate 2 and the dumbbell rod 1 can be prevented from contacting each other during the movement of the dumbbell plate 2, thereby effectively reducing the probability of wear of the threaded structure of the dumbbell plate 2 and the dumbbell rod 1. At the same time, the sizes of the positioning block 9 and the positioning groove 7 are matched, which can help enhance the stability of the connection between the dumbbell plate 2 and the dumbbell rod 1.

[0024] As a preferred embodiment, there are two groups of fastening sleeves 6, both of which are in a circular ring structure, and the threaded structure opened on the inner arc surface of the fastening sleeve 6 corresponds to the threaded structure opened at both ends of the dumbbell rod 1. At the same time, the end faces of both ends of the fastening sleeve 6 are respectively fixedly connected to a group of buffer layers, and the buffer layers are in a circular ring structure.

[0025] In this embodiment, if Figure 1 , Figure 2 and Figure 3 The buffer layer is made of soft rubber material, which can help reduce the probability of damage to the surface of the dumbbell plate 2 when the fastening sleeve 6 abuts against the surface of the dumbbell plate 2, and can also help enhance the fixing effect of the fastening sleeve 6 on the dumbbell plate 2.

[0026] As a preferred embodiment, the outer arc surface of the fastening sleeve 6 is circumferentially and evenly spaced to fix and connect four groups of anti-sliding blocks 5, and the four groups of anti-sliding blocks 5 are all rectangular in structure, and the cross-section of the anti-sliding blocks 5 is an isosceles trapezoidal structure. At the same time, the length of the anti-sliding block 5 is equal to the axial length of the fastening sleeve 6.

[0027] In this embodiment, if Figure 1 , Figure 2 and Figure 3 The setting of the anti-sliding block 5 can effectively enhance the rotation effect of the fastening sleeve 6, avoid the problem that the fastening sleeve 6 is difficult to rotate due to factors such as hand slippage, and assist in reducing the difficulty of the fastening sleeve 6 fixing the dumbbell plate 2.

[0028] As a preferred embodiment, the anti-slip sleeve 4 has a cylindrical structure, and a plurality of transverse grooves 8 are arranged on the outer side of the anti-slip sleeve 4 at equal intervals along the circumferential direction, and the transverse grooves 8 have a long strip structure, and the length of the transverse grooves 8 is equal to the axial length of the anti-slip sleeve 4. At the same time, the cross-section of the transverse grooves 8 has an isosceles trapezoidal structure, and the size of the open end of the transverse grooves 8 is larger than the size of the bottom.

[0029] In this embodiment, if Figure 2 and Figure 4 The anti-slip cover 4 is made of soft rubber material, which can help enhance the comfort of the user when holding it, and the opening of the transverse groove 8 can not only help enhance the anti-slip effect of the anti-slip cover 4, but also enhance the ventilation effect between the hand and the anti-slip cover 4 when the user holds it.

[0030] As a preferred embodiment, a plurality of groups of longitudinal grooves 10 are provided on the outer side of the anti-slip sleeve 4 in parallel with the axial direction and at equal intervals, and the longitudinal grooves 10 are in a circular ring structure, and the longitudinal grooves 10 are interconnected with the transverse grooves 8. At the same time, the longitudinal grooves 10 and the transverse grooves 8 are combined together to form a tic-tac-toe structure on the outer side of the anti-slip sleeve 4.

[0031] In this embodiment, if Figure 2 and Figure 4 The longitudinal grooves 10 are provided so that the plurality of transverse grooves 8 can be interconnected, which can not only reduce the interference of hand sweat on the user's holding of the anti-slip cover 4, but also help enhance the anti-slip and breathable effect of the surface of the anti-slip cover 4.

[0032] The dumbbell for conveniently adding dumbbell plates of the utility model can conveniently load and unload multiple groups of dumbbell plates 2 through the cooperation of the fastening sleeve 6, the positioning groove 7, the positioning block 9 and the dumbbell rod 1, thereby improving the loading and unloading efficiency of the dumbbell plates 2 and simplifying the operation process of dumbbell weight adjustment.

Claims

1. A dumbbell that is convenient for adding dumbbell plates, comprising: A dumbbell bar (1) and a fastening sleeve (6), characterized in that: the middle of the dumbbell bar (1) is fixedly connected to the anti-slip sleeve (4), and the two ends of the dumbbell bar (1) are symmetrically connected to the counterweight plate (3) near the anti-slip sleeve (4), and the two ends of the dumbbell bar (1) are symmetrically provided with positioning grooves (7), and the middle of the dumbbell plate (2) is provided with a through hole, and the inner side surface of the through hole is symmetrically connected to the positioning block (9), and the positioning block (9) is slidably connected in the positioning groove (7), the fastening sleeve (6) is screwed to the two ends of the dumbbell bar (1) through a threaded structure, and the outer arc surface of the fastening sleeve (6) is symmetrically connected to the anti-slip block (5), and the surface of the anti-slip sleeve (4) is respectively provided with a transverse groove (8) and a longitudinal groove (10).

2. A dumbbell for conveniently adding dumbbell plates according to claim 1, characterized in that: The dumbbell rod (1) is in the form of a cylindrical structure as a whole. Two groups of positioning grooves (7) are symmetrically provided at both ends of the dumbbell rod (1), and the four groups of positioning grooves (7) are all in the form of long strips. Meanwhile, thread structures are provided at positions close to the positioning grooves (7) at both ends of the dumbbell rod (1).

3. A dumbbell for conveniently adding dumbbell plates according to claim 1, characterized in that: The through hole in the middle of the dumbbell plate (2) is of a circular structure, the diameter of the through hole is larger than the diameters of the two ends of the dumbbell rod (1), and the two groups of positioning blocks (9) fixedly connected in the through hole are both of a rectangular structure.

4. A dumbbell for conveniently adding dumbbell plates according to claim 1, characterized in that: There are two groups of fastening sleeves (6), both of which are in a circular ring structure, and the threaded structure provided on the inner arc surface of the fastening sleeve (6) corresponds to the threaded structure provided on the two ends of the dumbbell rod (1), and at the same time, the end surfaces at both ends of the fastening sleeve (6) are respectively fixedly connected to a group of buffer layers, and the buffer layers are in a circular ring structure.

5. A dumbbell for conveniently adding dumbbell plates according to claim 1, characterized in that: The outer arc surface of the fastening sleeve (6) is circumferentially surrounded by four groups of anti-sliding blocks (5) fixedly connected at equal intervals, and the four groups of anti-sliding blocks (5) are all rectangular in structure, and the cross-section of the anti-sliding blocks (5) is an isosceles trapezoidal structure, and the length of the anti-sliding blocks (5) is equal to the axial length of the fastening sleeve (6).

6. A dumbbell for conveniently adding dumbbell plates according to claim 1, characterized in that: The anti-slip sleeve (4) is in a cylindrical structure, and a plurality of transverse grooves (8) are provided on the outer side surface of the anti-slip sleeve (4) at equal intervals along the circumferential direction, and the transverse grooves (8) are in a long strip structure, and the length of the transverse grooves (8) is equal to the axial length of the anti-slip sleeve (4). At the same time, the cross section of the transverse grooves (8) is in an isosceles trapezoidal structure, and the size of the open end of the transverse groove (8) is larger than the size of the bottom.

7. A dumbbell for conveniently adding dumbbell plates according to claim 1, characterized in that: The outer side surface of the anti-slip sleeve (4) is provided with a plurality of groups of longitudinal grooves (10) at equal intervals and in parallel along the axial direction, and the longitudinal grooves (10) are in a circular ring structure, and the longitudinal grooves (10) are interconnected with the transverse grooves (8), and the longitudinal grooves (10) and the transverse grooves (8) are combined together to form a tic-tac-toe structure on the outer side surface of the anti-slip sleeve (4).

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