High-security easy-to-install dumbbell assembly

Abstract

The present invention discloses a highly safe and easy-to-assemble and unassemble dumbbell assembly, comprising a base, a handle and a plurality of dumbbell plates. A central axis is provided in the handle, and two symmetrical telescopic tubes are sleeved on the central axis. As the handle rotates forward / reverse, the two telescopic tubes can extend / retract into the handle, and the dumbbell plates can be loaded one by one. A limit block, a limit ring and a main gear are also provided in the inner end cover. The limit ring and the main gear are both sleeved on the handle. A plurality of limit convex strips are provided on the outer edge of the limit ring. A limit block channel is formed between two adjacent limit convex strips. The top hook of the limit block is initially located in one of the limit block channels. When the dumbbell is placed on the base, the latch lifts the limit block and leaves the limit block channel. The present invention can realize the loading and unloading of dumbbell plates only by turning the handle, and the operation is convenient. Moreover, the rotation of the handle can be realized only when the dumbbell is placed on the base, and the safety is high.

Description

Technical Field

[0001] The invention relates to the field of sports exercise equipment, in particular to a highly safe and easily assembled and disassembled dumbbell assembly. Background Art

[0002] The existing dumbbells on the market include dumbbells with fixed weights and dumbbells with adjustable weights. However, when adjusting the weight of the dumbbells, the dumbbell plates need to be moved, which is complicated and inconvenient to operate. Improper operation may also cause people to fall, and the safety is not high. Summary of the invention

[0003] In order to overcome the above-mentioned shortcomings, the present invention provides a highly safe and easy-to-assemble and disassemble dumbbell assembly capable of quickly assembling and disassembling dumbbell plates.

[0004] The technical solution of the present invention is as follows:

[0005] A highly safe and easy-to-assemble and unassemble dumbbell assembly comprises a handle 1 and a plurality of dumbbell plates 7. Positioning assemblies are respectively arranged on both sides of the handle 1. The positioning assemblies comprise an inner end cover 2 and an outer end cover 3. A limiting frame 4 is arranged between the two end covers. The two ends of the handle 1 penetrate into the two inner end covers 2, and the handle 1 can rotate relative to the two inner end covers 2. A central axis 5 is arranged in the handle 1. The two ends of the central axis 5 respectively pass through the inner end covers 2 and the limiting frame 4 on both sides in sequence, and are connected to the outer end covers 3 by screws 31. Two symmetrical telescopic tubes 6 are sleeved on the central axis 5. Two symmetrical spiral grooves 11 are opened on the inner wall of the handle 1. A slider 61 cooperating with the spiral groove 11 is arranged on the outer wall of the telescopic tube 6. The slider 61 is located in the spiral groove 11 and can move and roll in the spiral groove 11 through the relative rotation of the telescopic tube and the handle. A through hole capable of allowing the telescopic tube 6 to pass through is opened along the axis in the inner end cover 1, the limiting frame 4 and the outer end cover 3. A plurality of groups of limiting grooves 41 are arranged on the surfaces of both sides of the limiting frame 4. As the handle rotates forward / reverse, the slider moves along the spiral groove, and the telescopic tube can extend / retract the handle. When the telescopic tube 6 extends out of the handle and enters the limiting frame 4, the dumbbell pieces 7 can be loaded / unloaded from the limiting groove 41 in sequence as the handle 1 rotates.

[0006] A limit block 25, a limit ring 22 and a main gear 23 are also provided in the inner end cover 2. The limit ring 22 and the main gear 23 are both sleeved on the handle 1 and can rotate with the handle 1. A plurality of limit convex strips 24 are evenly provided on the outer edge of the limit ring 22. The specific number is one more than the limit groove, which can respectively correspond to the gear position without dumbbell pieces, the gear position with one piece, the gear position with two pieces... Two adjacent limit convex strips 24 do not contact each other and form a limit block channel 26. The hook portion at the top of the limit block 25 is initially located in one of the limit block channels 26. At this time, the hook portion of the limit block clamps the limit convex strips on both sides so that the handle cannot rotate; on the base 10, there are two latches 9 on the bottom protrusions of the limit block 25 in the inner end covers 2 on both sides. When the inner end cover 2 is placed on the base 10, the latch 9 lifts the limit block 25 and leaves the limit block channel 26. At this time, the limit block has no effect on the limit ring, and the handle can rotate.

[0007] Preferably, a spring 30 is connected between the lower clamping block 8 and the support plate 29. When the spring 30 is not subjected to force, the hook portion of the top of the limit block is located in the limit block channel. When the latch lifts the limit block, the spring is squeezed and contracted, and the hook portion of the top of the limit block leaves the limit block channel. When the limit block is separated from the latch, the spring rebounds and pulls the hook portion of the top of the limit block back into the limit block channel. This design enables the limit block to ensure that unless the limit block is lifted by external force, the hook portion of the top of the limit block is located in the limit block channel at any angle of the dumbbell, ensuring high safety.

[0008] A scale gear 32 is also provided in the inner end cover 2, which is meshed with the main gear 23, and a scale is provided on the inner side of the scale gear 32. A scale dial opening 20 for displaying the weight gear of the dumbbell is also provided on the inner side of the inner end cover 2. The gear scale number on the scale gear corresponds to the number of the limit block channels. When the scale dial opening displays the gear number, the hook of the limit block is located above the limit block channel corresponding to the gear. At this time, the handle is lifted and the latch is released. Under the action of gravity, the hook of the limit block is stuck in the corresponding limit block channel, such as: when the first gear is displayed, it means there is no dumbbell plate, and when the second gear is displayed, it means one dumbbell plate.

[0009] The dumbbell piece 7 is opened at the top, and a slot 71 is opened downward from the opening. The dumbbell piece 7 is clamped in a group of limit slots of the limit frame 4 through the slot 71; a center hole 72 is also opened in the center of the dumbbell piece 7, and the diameter of the center hole 72 is greater than the width of the slot 71. The width of the slot 71 is greater than the diameter of the central axis 5 and smaller than the outer diameter of the telescopic tube 6. The diameter of the center hole 72 is at least equal to the outer diameter of the telescopic tube 6. That is, when the telescopic tube is not extended, only the central axis passes through the dumbbell plate, and the diameter of the central hole of the dumbbell plate is larger than the central axis. Therefore, when the handle is lifted, the central axis will slide out of the slot and the dumbbell plate will not be lifted; when the telescopic tube is extended, the diameter of the telescopic tube is larger than the width of the slot. Therefore, the telescopic tube will be stuck in the dumbbell plate when passing through the dumbbell plate, and will not slide out of the slot when the handle is lifted, thereby realizing the loading of the dumbbell plate, and as the telescopic tube is rotated, when more and more extended, the dumbbell plates will be stuck one by one from the inside to the outside in turn to increase the weight of the dumbbell; similarly, by rotating the handle in the opposite direction, the telescopic tube gradually retracts into the handle, and the user can adjust the number of dumbbell plates according to actual needs.

[0010] A circle of bosses 12 is provided at the center of the inner wall of the handle 1, so that the bosses can limit the slider in the spiral groove to ensure that it does not rotate too much inward. The distance between the inner and outer end covers, that is, the length of the limit frame, is smaller than the length of the telescopic tube 6, which ensures that the telescopic tube will not fall out of the handle due to excessive rotation of the handle when extended.

[0011] The inner end cover 2, the limiting frame 4 and the outer end cover 3 on the same side are connected as a whole by fastening bolts 100 in sequence.

[0012] A counterweight is also provided inside the outer end cover 3 .

[0013] The dumbbell pieces 7 are polygonal shapes that are easier to place and less likely to roll, including but not limited to triangles, quadrilaterals, and pentagons.

[0014] The beneficial effects of the present invention are:

[0015] The present invention can realize loading and unloading of dumbbell plates by rotating the handle only, and there is no need to move the dumbbell plates separately, so the operation is convenient. Moreover, the handle can be rotated only when the dumbbell is placed on the base. When the dumbbell leaves the base, the limit block will fall under the action of gravity, and the hook of the limit block will clamp the limit ring so that the handle cannot be rotated, so the safety is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0017] Figure 1 is a schematic diagram of the present invention;

[0018] Figure 2 is a cross-sectional view of a dumbbell;

[0019] Figure 3 yes Figure 2 Schematic diagram of local A;

[0020] Figure 4 This is a schematic diagram when there is no dumbbell plate on one side;

[0021] Figure 5 It is a schematic diagram of the structure inside the inner end cover;

[0022] Figure 6 is a schematic diagram of the base;

[0023] Figure 7 It is a schematic diagram of dumbbell plates. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0025] In the description of the invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the invention.

[0026] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figure 1-3The high-safety easy-to-assemble and disassemble dumbbell assembly shown comprises a handle 1 and a plurality of dumbbell plates 7. Positioning assemblies are respectively arranged on both sides of the handle 1. The positioning assemblies comprise an inner end cover 2 and an outer end cover 3. A limit frame 4 is arranged between the two end covers. The inner end cover 2, the limit frame 4 and the outer end cover 3 on the same side are connected as a whole by fastening bolts 100 in sequence. The two ends of the handle 1 penetrate into the two inner end covers 2, and the handle 1 can rotate relative to the two inner end covers 2. A central axis 5 is arranged in the handle 1. The two ends of the central axis 5 respectively penetrate the inner end covers 2 and the limit frame 4 on both sides in sequence, and are connected to the outer end covers 3 by screws 31. Two symmetrical telescopic tubes 6 are sleeved on the central axis 5. Two symmetrical spiral grooves 11 are opened on the inner wall of the handle 1. A slider 61 cooperating with the spiral groove 11 is arranged on the outer wall of the telescopic tube 6. The slider 61 is located in the spiral groove 11 and can move and roll in the spiral groove 11 through the relative rotation of the telescopic tube and the handle. As the handle rotates forward / reverse, the slider moves along the spiral groove, and the telescopic tube can extend / retract into the handle.

[0028] A through hole is provided along the axis in the inner end cover 1, the limit frame 4 and the outer end cover 3 to allow the telescopic tube 6 to pass through. Figure 4 As shown, a plurality of groups of limiting grooves 41 are provided on the surfaces of both sides of the limiting frame 4. As the handle rotates forward / reverse and the slider moves along the spiral groove, the telescopic tube can extend / retract the handle. When the telescopic tube 6 extends out of the handle and enters the limiting frame 4, the dumbbell pieces 7 can be loaded / unloaded from the limiting grooves 41 in sequence as the handle 1 rotates. A limiting block 25, a limiting ring 22 and a main gear 23 are also provided in the inner end cover 2. The limiting ring 22 and the main gear 23 are both mounted on the handle 1 and can rotate with the handle 1. A plurality of limiting ridges 24 are evenly provided on the outer edge of the limiting ring 22. The specific number is one more than the limiting grooves, which can respectively correspond to the gear position without dumbbell pieces, the gear position with one piece, the gear position with two pieces... Two adjacent limiting ridges 24 do not contact each other and form a limiting block channel 26. The hook portion of the top of the limiting block 25 is initially located in one of the limiting block channels 26. At this time, the hook portion of the limiting block clamps the limiting ridges on both sides so that the handle cannot rotate. As shown Figure 6As shown, the base is provided with a groove for placing dumbbell pieces, and there are two pins 9 on the bottom of the limit block 25 corresponding to the inner end covers 2 on both sides of the base 10. When the inner end cover 2 is placed on the base 10, the pin 9 lifts the limit block 25 and leaves the limit block channel 26. At this time, the limit block has no effect on the limit ring, and the handle can be rotated. A spring 30 is also connected between the lower block 8 and the support plate 29. When the spring 30 is not under force, the hook part of the limit block top is located in the limit block channel. When the pin lifts the limit block, the spring is squeezed and contracted, and the hook part of the limit block top leaves the limit block channel. When the limit block is separated from the pin, the spring rebounds and pulls the hook part of the limit block top back into the limit block channel. This design enables the limit block to fall quickly under the dual action of tension and gravity when it leaves the base, and unless the limit block is lifted by external force, the hook part of the limit block top is located in the limit block channel at any angle of the dumbbell, ensuring high safety.

[0029] like Figure 5 As shown, a graduated gear 32 is also provided inside the inner end cover 2, the graduated gear 32 is meshed with the main gear 23, and a scale is provided on the inner side of the graduated gear 32. A graduated dial 20 for displaying the weight positions of dumbbells is also provided on the inner side of the inner end cover 2. The number of gear scales on the graduated gear corresponds to the number of limit block channels. When the gear number is displayed on the graduated dial, the hook of the limit block is located above the limit block channel corresponding to the gear. At this time, the handle is lifted and the latch is released. Under the action of gravity, the hook of the limit block is stuck in the corresponding limit block channel, such as: when the first gear is displayed, it indicates that there is no dumbbell plate, and when the second gear is displayed, it indicates one dumbbell plate.

[0030] like Figure 7 As shown, the dumbbell piece 7 has an opening at the top, and a slot 71 is provided downward from the opening, and the dumbbell piece 7 is clamped in a set of limit slots of the limit frame 4 through the slot 71; Figure 4 The dumbbell plate shown in the figure has a center hole 72 in the center of the dumbbell plate 7. The diameter of the center hole 72 is larger than the width of the slot 71. The width of the slot 71 is larger than the diameter of the central axis 5 and smaller than the outer diameter of the telescopic tube 6. The diameter of the center hole 72 is at least equal to the outer diameter of the telescopic tube 6. That is, when the telescopic tube is not extended, only the central axis passes through the dumbbell plate, and the diameter of the center hole of the dumbbell plate is larger than the central axis. Therefore, when the handle is lifted, the central axis will slide out of the slot and the dumbbell plate will not be lifted; and when the telescopic tube is extended, the diameter of the telescopic tube is larger than the width of the slot. Therefore, the telescopic tube will be stuck in the dumbbell plate when passing through the dumbbell plate, and will not slide out of the slot when the handle is lifted, so as to achieve loading of the dumbbell plate. As the telescopic tube is rotated, when more and more of the telescopic tube is extended, the dumbbell plates will be stuck one by one from the inside to the outside in turn to increase the weight of the dumbbell; similarly, when the handle is rotated in the opposite direction, the telescopic tube gradually retracts into the handle, and the user can adjust the number of dumbbell plates according to actual needs.

[0031] A circle of bosses 12 is provided at the center of the inner wall of the handle 1, so that the bosses can limit the slider in the spiral groove to ensure that it does not rotate too much inward. The distance between the inner and outer end covers, that is, the length of the limit frame, is smaller than the length of the telescopic tube 6, which ensures that the telescopic tube will not fall out of the handle due to excessive rotation of the handle when extended.

[0032] When the handle of the present invention does not rotate, each dumbbell piece is at the bottom, and the limit frame is at the top, and the dumbbell pieces are inserted through the slots, the limit slots and the limit frame. At this time, when the handle is picked up, the dumbbell pieces are separated from the limit frame, and the dumbbell is lifted without dumbbell pieces. Since a counterweight block 21 is also provided in the outer end cover, even if the dumbbell pieces are not carried, the dumbbell can be lifted to do easy exercise; when the handle is turned, the telescopic tube extends out and penetrates into the center hole of the dumbbell piece, and as it keeps rotating in the same direction, the telescopic tube will successively penetrate from the first piece to the last piece of dumbbell piece. In this process, the user can choose to turn the handle and stop rotating according to the number of dumbbell pieces actually required. At this time, when the handle is picked up, the required number of dumbbell pieces will be worn on the telescopic tube. On the contrary, the dumbbell pieces can be removed by rotating the handle in the opposite direction. That is, the present invention can realize the loading and unloading of dumbbell pieces only by rotating the handle, without moving the dumbbell pieces separately, and is easy to operate. The design of the limit ring at the end of the handle, the limit block below, and the pin on the base ensures that the handle can only be rotated when the dumbbell is placed on the base. When the dumbbell leaves the base, the limit block will fall under the action of gravity, and the hook of the limit block will clamp the limit ring so that the handle cannot be rotated, which is highly safe. In addition, a main gear is set at the end of the handle, so when the handle is rotated, the limit ring, the main gear and the scale gear are linked, and the scale dial can display the gear position while loading and unloading the dumbbell pieces.

[0033] The above is based on the present invention as an inspiration. Through the above description, relevant staff can make various changes and modifications without departing from the technical idea of ​​this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A highly safe and easy-to-assemble and disassemble dumbbell assembly, comprising a base (10), a handle (1) and a plurality of dumbbell plates (7), characterized in that: Positioning components are provided on both sides of the handle (1), the positioning components comprising an inner end cover (2) and an outer end cover (3), a limiting frame (4) is provided between the two end covers, the two ends of the handle (1) are inserted into the two inner end covers (2), and the handle (1) can rotate relative to the two inner end covers (2); a central axis (5) is provided in the handle (1), the two ends of the central axis (5) respectively pass through the inner end covers (2) and the limiting frame (4) on both sides in sequence, and are respectively connected to the outer end covers (3) on both sides by screws (31); two symmetrical telescopic tubes (6) are sleeved on the central axis (5), the inner wall of the handle (1) is provided with two symmetrical spiral grooves (11), the outer wall of the telescopic tube (6) is provided with a slider (61) matched with the spiral groove (11), the slider (61) is located in the spiral groove (11) and can move and roll in the spiral groove (11); A through hole capable of allowing the telescopic tube (6) to pass through is provided along the axis in the inner end cover (2), the limiting frame (4) and the outer end cover (3), and a plurality of groups of limiting grooves (41) are provided on the surfaces of both sides of the limiting frame (4); As the handle (1) rotates forwards or reverses, the two telescopic tubes (6) can extend or retract into the handle (1) while the slider (61) moves along the spiral groove (11). When the telescopic tubes (6) extend out of the handle and enter the limiting frame (4), the dumbbell plates (7) can be loaded or unloaded in sequence as the handle (1) rotates. A limit block (25), a limit ring (22) and a main gear (23) are also provided in the inner end cover (2). The limit ring (22) and the main gear (23) are both sleeved on the handle (1) and can rotate with the handle (1). A plurality of limit convex strips (24) are provided on the outer edge of the limit ring (22). Two adjacent limit convex strips (24) do not contact each other and form a limit block channel (26). The hook portion at the top of the limit block (25) is initially located in one of the limit block channels (26). Two latches (9) are provided on the base (10) corresponding to the bottom protrusions of the limit blocks (25) in the inner end covers (2) on both sides. When the inner end cover (2) is placed on the base (10), the latches (9) lift the limit block (25) and leave the limit block channel (26). A graduated gear (32) is also provided inside the inner end cover (2), the graduated gear (32) meshing with the main gear (23), and a graduation is provided on the inner side of the graduated gear (32), and a graduated plate opening (20) is also provided on the inner side of the inner end cover (2); the number of gear scales on the graduated gear (32) corresponds to the number of the limit block channels (26); When the scale plate mouth displays the gear position number, the hook portion of the limit block (25) is located above the limit block channel (26) corresponding to the gear position. At this time, the handle is lifted and the latch is released. Under the action of gravity, the limit block hook is stuck in the corresponding limit block channel (26). When the handle (1) is rotated, the limit ring (22), the main gear (23) and the scale gear (32) are linked, so that the scale plate mouth (20) can display the gear position while loading and unloading the dumbbell plate (7); The dumbbell plate (7) has an opening at the top and a slot (71) is provided downward from the opening. The dumbbell plate (7) is clamped in a group of limit slots (41) of the limit frame (4) through the slot (71). A center hole (72) is also provided at the center of the dumbbell plate (7). The diameter of the center hole (72) is greater than the width of the slot (71). The width of the slot (71) is greater than the diameter of the central axis (5) and smaller than the outer diameter of the telescopic tube (6). The diameter of the center hole (72) is at least equal to the outer diameter of the telescopic tube (6).

2. The high-safety easy-to-assemble and disassemble dumbbell assembly according to claim 1 is characterized in that: A latch hole (27) is also provided at the bottom of the inner end cover (2), and the latch (9) can be inserted into the latch hole (27). The limit block (25) is located in the latch hole (27). Two clamping blocks (8) are also provided on one side of the limit block (25). A support plate (29) protrudes from the latch hole (27) toward the limit block (25). The support plate (29) is located between the two clamping blocks (8), and when the upper clamping block (8) falls on the support plate (29), the hook portion of the limit block (25) is located in the limit block channel (26).

3. The high-safety easy-to-assemble and disassemble dumbbell assembly according to claim 2 is characterized in that: A spring (30) is also connected between the lower clamping block (8) and the supporting plate (29).

4. The high-safety easy-to-assemble and disassemble dumbbell assembly according to claim 1 is characterized in that: A circle of bosses (12) is provided at the center of the inner wall of the handle (1), and the distance between the inner and outer end covers is less than the length of the telescopic tube (6).

5. The high-safety easy-to-assemble and disassemble dumbbell assembly according to claim 1 is characterized in that: The inner end cover (2), the limiting frame (4) and the outer end cover (3) on the same side are connected as a whole in sequence by fastening bolts (100).

6. The high-safety easy-to-assemble and disassemble dumbbell assembly according to claim 1 is characterized in that: A counterweight (21) is also provided inside the outer end cover (3).

7. The high-safety easy-to-assemble and disassemble dumbbell assembly according to claim 1 is characterized in that: The dumbbell plate (7) is a polygon, including a triangle, a quadrilateral, and a pentagon.

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