Adjustable weight lifting equipment handle and weight lifting equipment

Abstract

The utility model provides an adjustable weightlifting equipment handle and weightlifting equipment, the adjustable weightlifting equipment handle comprises a rotary sleeve, a fixed sleeve and a telescopic shaft, the rotary sleeve is sleeved with a handle sleeve, the two ends of the handle sleeve are provided with rotary discs, and the two ends of the fixed sleeve are sleeved with installation discs; an annular driving plate is arranged on the inner side of the edge of the rotating disc, and the outer edge of the driving plate is in a wave shape to form wave crests and wave troughs. An adjusting plate is arranged in the mounting disc; one end of the adjusting plate abuts against the outer edge of the driving plate. The outer side of the adjusting plate is provided with a hanging plate, the hanging plate is arranged in the sliding groove of the installation disc in a penetrating mode, the bottom of the installation disc is provided with a semicircular half adjusting piece, and the inner sides of the two ends of the half adjusting piece are provided with hanging connection grooves corresponding to the hanging plate. When the weight lifting equipment is used for adjusting the weight, the weight increased and decreased at the two ends of the handle each time is smaller than the weight of one weight stack, the weight adjustment is refined, and the requirement of a user is met.

Description

Technical Field

[0001] This utility model relates to the field of weightlifting equipment technology, and in particular to an adjustable weightlifting equipment handle and weightlifting equipment. Background Technology

[0002] Existing weightlifting equipment, such as dumbbells and barbells, has a similar structure, with weight plates at both ends of the handle. Furthermore, the handle length of existing weightlifting equipment is generally fixed. To increase or decrease the weight, the weight plates at both ends of the handle must be manually adjusted, which is inconvenient. Therefore, adjustable-length handles have emerged on the market. These handles allow users to adjust the extension length at both ends, thereby raising or lowering different numbers of weight plates to achieve the purpose of adjusting the lifting weight. However, current adjustable-length handles can only add or remove the weight of two weight plates at a time (i.e., only one weight plate can be added or removed at each end of the handle at a time). This results in a large range of weight adjustments that does not match the user's arm strength, leading to a poor user experience.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable weightlifting equipment handle, which allows the weight increase or decrease at each end of the handle to be less than the weight of a single counterweight when adjusting the weight of the weightlifting equipment, thus achieving finer weight adjustment to meet the needs of the user.

[0005] Another objective of this utility model is to provide a weightlifting device that includes the aforementioned adjustable weightlifting device handle. This handle allows the weight to be adjusted such that the weight added or removed at each end of the handle is less than the weight of a single counterweight, thus enabling finer weight adjustment to meet the user's needs.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An adjustable weightlifting equipment handle includes a rotating sleeve, a fixed sleeve, and two telescopic shafts. The rotating sleeve is rotatably disposed on the outer periphery of the fixed sleeve, and the telescopic shafts are disposed opposite to each other inside the fixed sleeve and can slide along the axial direction of the fixed sleeve.

[0008] The rotating sleeve has two oppositely arranged spiral guide grooves on its side wall, and the fixed sleeve has two oppositely arranged straight track grooves on its side wall. The telescopic shaft has a guide shaft extending outward along the radial direction of the telescopic shaft at one end that is close to each other. The two guide shafts are respectively inserted into the two track grooves and the two guide grooves in sequence.

[0009] A handle sleeve is fitted around the outer periphery of the rotating sleeve. Rotating disks are fixedly mounted at both ends of the handle sleeve, and the rotating disks are fixedly connected to the ends of the rotating sleeve. Both ends of the fixed sleeve are located outside the rotating sleeve, and mounting disks are fitted at both ends of the fixed sleeve.

[0010] The rotating disk has an annular drive plate on its inner edge, and the outer edge of the drive plate is wavy, forming crests and troughs. The mounting disk has adjustment grooves on both sides inside, arranged parallel to the axial direction of the mounting disk. Adjustment plates that can slide along the adjustment grooves are located within the adjustment grooves. A spring is provided between one end of the adjustment plate and the inner end of the adjustment groove, causing the other end of the adjustment plate to abut against the outer edge of the drive plate. A hanging plate extending radially along the mounting disk is provided outside the adjustment plate, and the mounting disk has mounting plates on both sides that correspond to the hanging plates. The mounting plate has a corresponding sliding groove that extends in a direction parallel to the axial direction of the mounting plate. The mounting plate passes through the sliding groove, and the end of the mounting plate is located outside the sliding groove. The bottom of the mounting plate is provided with a semi-circular semi-adjusting plate. The inner sides of both ends of the semi-adjusting plate are provided with hooking grooves corresponding to the sliding groove. When the end of the adjusting plate abuts against the crest or trough of the outer edge of the driving plate, the mounting plate slides into the hooking groove. When the end of the adjusting plate abuts against the trough or crest of the outer edge of the driving plate, the mounting plate slides out of the hooking groove.

[0011] According to one embodiment of the present invention, a semi-fixed piece is fixedly provided on the top of the mounting plate, and the semi-fixed piece is connected to the two ends of the semi-adjusting piece to form a ring.

[0012] According to one embodiment of the present invention, the handle sleeve is provided with fixed grooves at both ends, and the rotating sleeve is provided with positioning grooves at both ends; one end of the inner wall of the center hole of the rotating disk is provided with a key corresponding to the fixed groove, and the other end is provided with a key corresponding to the positioning groove; the fixed sleeve is provided with limiting grooves at both ends, and the inner wall of the center hole of the mounting disk is provided with a key corresponding to the limiting groove.

[0013] According to one embodiment of the present invention, there are two fixed slots, which are symmetrically arranged with the axis of the handle sleeve as the axis of symmetry; there are two positioning slots, which are symmetrically arranged with the axis of the rotating sleeve as the axis of symmetry.

[0014] According to one embodiment of the present invention, a rotating element is provided at the end of the guide shaft.

[0015] According to one embodiment of the present invention, the top of the telescopic shaft is provided with a plurality of positioning grooves, which are evenly distributed along the axial direction of the telescopic shaft; the top of both ends of the fixed sleeve are provided with notches corresponding to the positioning grooves; the mounting plate is provided with a vertically sliding locking plate, the locking plate has a locking hole in the middle and is fitted onto the end of the fixed sleeve; the top of the locking hole of the locking plate normally passes through the notch and is located in the positioning groove; the bottom of the mounting plate is provided with a locking groove corresponding to the locking plate, and the bottom of the locking plate passes through the locking groove and is located outside the mounting plate.

[0016] According to one embodiment of the present invention, a spring is provided between the top of the lock plate and the top of the mounting plate, and a lock plate extends downward from the top of the lock hole.

[0017] This utility model also provides a weightlifting device, including the above-mentioned adjustable weightlifting device handle and a plurality of counterweight plates; the counterweight plates are provided with a through hole in the middle for the telescopic shaft to pass through.

[0018] According to one embodiment of the present invention, a dovetail-shaped slot is provided on one side of the counterweight plate, and a block corresponding to the shape of the slot is provided on the other side of the counterweight plate; an mounting plate is fixedly provided on the outside of the mounting plate, and an mounting groove or mounting block corresponding to the slot or block is provided on the outside of the mounting plate.

[0019] According to one embodiment of the present invention, the slot includes a first segment and a second segment connected sequentially from top to bottom, the first segment being V-shaped and the second segment being rectangular.

[0020] Compared with the prior art, the advantages and beneficial effects of the embodiments of this utility model are as follows:

[0021] In use, the adjustable weightlifting equipment handle and the weightlifting equipment provided in this embodiment of the invention allow the rotating disk to rotate synchronously with the handle sleeve. The peaks and troughs of the outer edge of the drive plate cause the adjusting plate to reciprocate axially, which in turn drives the hanging plate to reciprocate axially, allowing it to slide into and out of the mounting slot of the semi-adjustable plate. When the hanging plate slides into the mounting slot, the semi-adjustable plate is connected to the adjustable weightlifting equipment handle; when the hanging plate slides out of the mounting slot, the semi-adjustable plate is not connected to the adjustable weightlifting equipment handle. This ensures that when adjusting the weight of the weightlifting equipment, the weight increase or decrease at each end of the handle is less than the weight of a single counterweight, achieving finer weight adjustment to meet the user's needs. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an undue limitation of this utility model. Wherein:

[0023] Figure 1 A schematic diagram of the appearance of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0024] Figure 2 An assembly diagram of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the adjustable weightlifting equipment handle provided in an embodiment of the present utility model;

[0026] Figure 4 A partially enlarged schematic diagram of the internal structure of the adjustable weightlifting equipment handle provided in this embodiment of the utility model;

[0027] Figure 5 A schematic diagram illustrating the installation of the semi-adjustable plate of the adjustable weightlifting equipment handle provided in this embodiment of the utility model;

[0028] Figure 6 A schematic diagram showing the installation of the other angle of the half-adjustment piece of the adjustable weightlifting equipment handle provided in this embodiment of the utility model;

[0029] Figure 7 A schematic diagram of the internal structure of the handle sleeve of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0030] Figure 8 A schematic diagram of the internal assembly of the handle sleeve of the adjustable weightlifting equipment handle provided in an embodiment of the present utility model;

[0031] Figure 9 A schematic diagram of the rotating sleeve of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0032] Figure 10 A schematic diagram of the structure of the fixing sleeve for the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0033] Figure 11 A schematic diagram of the telescopic shaft of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0034] Figure 12 A schematic diagram of the handle sleeve of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0035] Figure 13 A schematic diagram of the rotating disk of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0036] Figure 14A schematic diagram of another angle of the rotary disk of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0037] Figure 15 A schematic diagram of the mounting plate for the adjustable weightlifting equipment handle provided in an embodiment of this utility model;

[0038] Figure 16 A schematic diagram of the mounting plate of the adjustable weightlifting equipment handle provided in an embodiment of the present utility model from another angle;

[0039] Figure 17 A schematic diagram of the structure of an adjustable weightlifting device handle provided in another embodiment of the present invention;

[0040] Figure 18 This is a schematic diagram of the structure of the weightlifting equipment provided in an embodiment of the present utility model;

[0041] Figure 19 A schematic diagram of the structure of the counterweight plate of the lifting equipment provided in this embodiment of the utility model;

[0042] Figure 20 This is a structural schematic diagram of the counterweight plate of the weightlifting equipment provided in an embodiment of the present utility model from another angle.

[0043] Explanation of reference numerals in the attached figures:

[0044] 1. Rotating sleeve; 11. Guide groove; 12. Positioning groove; 13. Shaft retaining ring; 2. Fixed sleeve; 21. Track groove; 23. Limiting groove; 24. Limiting hole; 25. Shaft retaining ring; 26. Notch; 3. Telescopic shaft; 32. Guide shaft; 321. Rotating component; 34. Positioning groove; 4. Handle sleeve; 41. Fixed groove; 5. Rotating disk; 52. Rib; 53. Drive plate; 6. Mounting disk; 60. Locking plate; 601. Locking hole; 602 603. Locking groove; 604. Spring; 605. Locking plate; 61. Threaded positioning hole; 62. Adjusting groove; 63. Adjusting plate; 64. Hanging plate; 655. Rolling bearing; 66. Spring; 67. Slide groove; 68. Semi-adjusting plate; 681. Hanging groove; 69. Semi-fixed plate; 700. Counterweight plate; 71. Through hole; 72. Slot; 721. First section; 722. Second section; 723. Limiting stop; 73. Locking block; 731. Guide slope; 74. Mounting plate. Detailed Implementation

[0045] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. Various examples are provided by way of explanation of the present invention and not by way of limitation. In fact, those skilled in the art will recognize that modifications and variations can be made to the present invention without departing from the scope or spirit of the invention. For example, a feature shown or described as part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desirable that the present invention encompass such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0046] In the description of this utility model, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are only used to distinguish different components. Words such as "comprising" or "including" mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected," "linked," and "set up" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a direct connection or an indirect connection through intermediate components; a wired connection, a radio connection, or a wireless communication signal connection. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0047] like Figure 1 , Figure 2 , Figures 7-12 As shown, this utility model embodiment provides an adjustable lifting equipment handle, including a rotating sleeve 1, a fixed sleeve 2, and two telescopic shafts 3. The rotating sleeve 1 is rotatably disposed on the outer periphery of the fixed sleeve 2, and the telescopic shafts 3 are disposed opposite to each other inside the fixed sleeve 2 and can slide along the axial direction of the fixed sleeve 2. The side wall of the rotating sleeve 1 has two opposing spiral guide grooves 11, and the side wall of the fixed sleeve 2 has two opposing linear track grooves 21. The ends of the two telescopic shafts 3 that are close to each other have guide shafts 32 extending radially outward along the telescopic shafts 3, and the two guide shafts 32 are respectively inserted into the two track grooves 21 and the two guide grooves 11. A handle sleeve 4 is fitted on the outer periphery of the rotating sleeve 1, and rotating disks 5 are fixedly mounted at both ends of the handle sleeve 4. The rotating disks 5 are fixedly connected to the ends of the rotating sleeve 1. The two ends of the fixed sleeve 2 are located outside the rotating sleeve 1, and mounting disks 6 are fitted on both ends of the fixed sleeve 2.

[0048] When the adjustable weightlifting equipment handle of this utility model is applied to dumbbells or barbells with adjustable weight plates, in order to make the dumbbell weight adjustment more precise for each level, a half-adjustment plate (weighing less than a single weight plate, for example, half the weight of a single weight plate) is added. For example, if each weight plate weighs 1 kg, existing dumbbells or barbells with adjustable weight plates increase or decrease the weight by 2 kg each time (adding or removing one weight plate at each end), while in the embodiment of this utility model, the weight increase or decrease each time is the weight of one weight plate (i.e., adding or removing the weight of one half-adjustment plate at each end, i.e., 0.5 kg, for a total increase or decrease of 1 kg). Specifically, as... Figures 1-6 As shown, the inner edge of the rotating disk 5 is provided with an annular drive plate 53, and the outer edge of the drive plate 53 is wavy, forming crests and troughs. The mounting disk 6 has adjustment grooves 64 on both sides inside, arranged in a direction parallel to the axial direction of the mounting disk 6. An adjustment plate 65, which can slide along the adjustment groove 64, is provided within the adjustment groove 64. A spring 66 is provided between one end of the adjustment plate 65 and the inner end of the adjustment groove 64, so that the other end of the adjustment plate 65 abuts against the outer edge of the drive plate 53. A hanging plate 651 extending radially along the mounting disk 6 is provided on the outer side of the adjustment plate 65. The mounting disk 6 has corresponding sliding grooves 67 on both sides, extending in a direction parallel to the axial direction of the mounting disk 6. The hanging plate 651 passes through the sliding groove 67, and its end is located outside the sliding groove 67. The bottom of the mounting plate 6 is provided with a semi-circular semi-adjustable plate 68. The inner sides of both ends of the semi-adjustable plate 68 are provided with a mounting groove 681 corresponding to the sliding groove 67. When the end of the adjusting plate 65 abuts against the crest or trough of the outer edge of the drive plate 53, the mounting plate 651 slides into the mounting groove 681. When the end of the adjusting plate 65 abuts against the trough or crest of the outer edge of the drive plate 53, the mounting plate 651 slides out of the mounting groove 681.

[0049] When the adjustable lifting equipment handle provided in this embodiment is in use, rotating the rotating sleeve 1 via the handle sleeve 4 drives the guide shaft 32 to move axially within the track groove 21 of the fixed sleeve 2, thereby causing the two telescopic shafts 3 to slide in opposite directions within the fixed sleeve 2 for extension and retraction, thus obtaining a handle with adjustable length. When the rotating disk 5 rotates synchronously with the handle sleeve 4, the crests and troughs of the outer edge of the drive plate 53 cause the adjusting plate 65 to reciprocate axially, driving the hanging plate 651 to reciprocate axially, thereby allowing it to slide into and out of the mounting groove 681 of the semi-adjusting plate 68. When the mounting plate 651 slides into the mounting groove 681, the semi-adjustable piece 68 is connected to the adjustable weightlifting equipment handle. When the mounting plate 651 slides out of the mounting groove 681, the semi-adjustable piece 68 is not connected to the adjustable weightlifting equipment handle. When applied to weightlifting equipment with an adjustable number of counterweights, the rotating disk 5 rotates one position, and the telescopic shaft 3 extends or retracts by half the thickness of a counterweight. Simultaneously, the drive plate 53 completes one peak-to-trough transition, and the adjusting plate 65 moves back and forth along the axial direction of the mounting plate 6 once (i.e., the transition between sliding in and out of the mounting groove 681). For example, if the thickness of the counterweight is 13 mm, the rotating disk 5 rotates 22.5 degrees for each adjustment position, and the telescopic shaft 3 moves in and out 6.5 mm. Each counterweight weighs 1 kg, and the semi-adjustable piece 68 weighs half the weight of the counterweight, i.e., 0.5 kg. Assuming the weight of the lifting equipment is 10 kg, the hanging plate 651 does not slide into the mounting slot 681 (i.e., it does not carry the half-adjustment piece 68). The end of the telescopic shaft 3 extends into the outermost counterweight piece by half its thickness. Rotating the handle sleeve 4 one stop forward causes the telescopic shaft 3 to extend outward by half the thickness of the counterweight piece. The number of counterweight pieces carried by the adjustable lifting equipment handle remains unchanged, but the weight of two half-adjustment pieces 68, i.e., 1 kg, will increase. Continuing to rotate one stop forward, the telescopic shaft will extend into the next counterweight piece by half its thickness, thus adding the weight of two counterweight pieces. However, at the same time, the hanging plate 651 slides out of the mounting slot 681, reducing the weight of two half-adjustment pieces 68. The same principle applies to rotating in the opposite direction, ensuring that the weight adjusted by each rotation is the weight of two half-adjustment pieces 68, achieving fine adjustment of the weight to meet the user's needs.

[0050] Specifically, such as Figure 1 , Figure 2 , Figure 5 , Figure 6As shown, the semi-adjustable plate 68 is semi-circular in shape and wraps around the outer periphery of the mounting plate 6. In order to achieve the integration of the counterweight plate and the adjustable lifting equipment handle, in one embodiment of the present invention, a semi-fixed plate 69 is fixedly provided on the top of the mounting plate 6. When the adjustable lifting equipment handle carries the semi-adjustable plate 68, the semi-fixed plate 69 is connected to the two ends of the semi-adjustable plate 68 and forms a ring.

[0051] like Figure 1 , Figure 2 As shown, in one embodiment of this utility model, one side of the semi-adjusting piece 68 and the semi-fixed piece 69 is an inclined surface, smoothly transitioning with the inclined surface of the rotating disk 5. The manufacturing process of the semi-adjusting piece 68 and the semi-fixed piece 69 can be adjusted according to market requirements, such as casting, sheet metal processing, or injection molding. Preferably, the semi-adjusting piece 68 and the semi-fixed piece 69 are designed with oblique cuts at the semi-circular interface position, which allows the semi-adjusting piece 68 to separate smoothly from the mounting disk 6.

[0052] In one embodiment of this utility model, a raised ring is provided at the outer end of the mounting plate 6, and the inner walls of the semi-adjusting plate 68 and the semi-fixed plate 69 are provided with annular grooves corresponding to the raised ring, which can provide axial positioning for the semi-adjusting plate 68 and the semi-fixed plate 69. In addition, the semi-fixed plate 69 can also serve the following functions: 1. Adding counterweight to change the weight of the lifting equipment; 2. A pointer indicator can be set in the middle to cooperate with the gear numbers on the rotating plate 5 to serve as a gear indicator.

[0053] like Figure 4 As shown, in one embodiment of the present invention, in order to reduce friction, the end of the adjusting plate 65 is provided with a rolling bearing 652 for abutting against the outer edge of the driving plate 53.

[0054] like Figure 8 , Figure 11 As shown, in order to reduce friction, in one embodiment of the present invention, the end of the guide shaft 32 is provided with a rotating component 321, such as a rolling bearing, a copper sleeve, a roller, etc. The rotating component 321 rolls against the side wall of the guide groove 11 and the track groove 21, making the sliding of the telescopic shaft 3 smoother.

[0055] like Figure 12As shown, in one embodiment of this utility model, the handle sleeve 4 has two elongated fixing slots 41 at both ends to securely position with the key in the through hole in the center of the rotating disk 5, achieving synchronous rotation and improving processing efficiency. Furthermore, for anti-slip purposes, the surface of the handle sleeve 4 where the user grips can be knurled to obtain a fishnet-shaped anti-slip texture, an elongated anti-slip texture, or various customized anti-slip patterns, etc., with the texture varying according to market demand. Additionally, the surface of the handle sleeve 4 can be chrome-plated with iron and covered with rubber or plastic, etc., allowing for anti-slip treatment of the handle sleeve 4 with various materials according to market needs.

[0056] like Figure 13 , Figure 14 As shown, in one embodiment of this utility model, the rotating disk 5 is shaped like a weight, with evenly distributed numbered positions on its inclined surface. Combined with the second positioning hole 511 and the second ball-head plunger 61, each rotation angle changes the position. Applied to dumbbells or barbells with adjustable counterweights, the number of positions can be changed according to the number of positions and the weight being adjusted. Specifically, a 22.5-degree rotation of the handle sleeve 4 corresponds to one position, with a total of 16 positions. The values ​​on the positions can be adjusted according to the total weight requirement. Rotating the rotating sleeve 1 via the handle sleeve 4 drives the telescopic shaft 3 to move linearly through the spiral guide groove 11. In this embodiment, each 22.5-degree rotation of the handle sleeve 4 causes a single telescopic shaft 3 to move linearly forward and backward by half the thickness of a counterweight, allowing for the addition or removal of half-adjustment plates and counterweight plates.

[0057] Furthermore, such as Figure 3 , Figures 13-14 As shown, the rotating disk 5 has a key at one end facing the handle sleeve 4 for positioning and connecting with the fixing slot 41 at the end of the handle sleeve 4, which serves to rotate and position the handle sleeve 4. The other end has a key for positioning and connecting with the positioning slot 12 at the end of the rotating sleeve 1, which serves to position and position the rotating sleeve 1 radially. The rotating sleeve 1 also has a shaft retaining ring 13 at its end for axial positioning of the rotating disk 5. Preferably, there are two positioning slots 12 at the end of the rotating sleeve 1, with an angle difference of 180 degrees (i.e., opposite to each other), allowing for interchangeability of the left and right molds. Furthermore, the rotating disk 5 has evenly distributed ribs 52 inside, which can support and fix the structure of the rotating disk 5, and position its rotation direction so that it can rotate synchronously with the rotating disk 5.

[0058] like Figure 3 , Figure 10 , Figures 15-16As shown, in one embodiment of this utility model, the mounting plate 6 is disc-shaped. The mounting plate 6 has a central hole with a key for positioning with the fixing sleeve 2. Correspondingly, the fixing sleeve 2 has limiting slots 23 at both ends, distributed 180 degrees opposite each other, allowing the mounting plate 6 to be used laterally, reducing production costs and improving installation efficiency. Additionally, the outer end of the mounting plate 6 has two symmetrical threaded positioning holes 62 arranged radially along the mounting plate 6 for mounting and positioning with the fixing sleeve 2. Correspondingly, the fixing sleeve 2 also has corresponding limiting holes 24 at both ends for bolt-fixed connection. Furthermore, the end of the fixing sleeve 2 is provided with a shaft retaining ring 25 to limit the mounting plate 6 axially.

[0059] like Figure 3 , Figure 4 , Figure 7 , Figure 16 , Figure 17As shown, to prevent the telescopic shaft 3 from moving axially during use of the adjustable weightlifting equipment handle and ensure safe operation, in one embodiment of this invention, the top of the telescopic shaft 3 is provided with several positioning grooves 34, which are evenly distributed along the axial direction of the telescopic shaft 3. The top of both ends of the fixing sleeve 2 are provided with notches 26 corresponding to the positioning grooves 34. The mounting plate 6 is provided with a vertically sliding locking plate 60, which has a locking hole 601 in its middle and is fitted onto the end of the fixing sleeve 2. The top of the locking hole 601 of the locking plate 60 normally passes through the notch 26 and is located within the positioning groove 34. The bottom of the mounting plate 6 is provided with a locking groove 602 corresponding to the locking plate 60, and the bottom of the locking plate 60 passes through the locking groove 602 and is located outside the mounting plate 6. When the telescopic shaft 3 is adjusted to the predetermined length, the locking plate 60, under the action of gravity, allows the top of its locking hole 601 to fall into the positioning groove 34 of the telescopic shaft 3 and the notch 26 of the fixing sleeve 2, preventing the telescopic shaft 3 from moving axially. After the adjustable lifting equipment handle is used, it is placed on the ground or a special base with a protrusion corresponding to the locking plate 60. The locking plate 60 at the bottom of the mounting plate 6 is lifted, and the top of the locking hole 601 of the locking plate 60 separates from the positioning groove 34 and the notch 26, allowing the telescopic shaft 3 to be readjusted. Preferably, to ensure the locking effect, a spring 603 is provided between the top of the locking plate 60 and the top of the mounting plate 6, which normally presses the locking plate 60 down, preventing the locking plate 60 from unlocking from the telescopic shaft 3 when the adjustable lifting equipment handle is flipped, thus preventing the telescopic shaft 3 from moving axially. Furthermore, to improve the locking effect, the top of the locking hole 601 of the locking plate 60 protrudes downward to form a locking piece 604, which corresponds to the shape of the positioning groove 34. The locking plate 60 cooperates with the spring 603 mounted on the mounting plate 6. Under the elastic force of the spring 603, the locking piece 604 of the locking plate 60 is locked in the positioning groove 34 of the telescopic shaft 3, achieving a self-locking function and gear locking. For example, after the weightlifting equipment has adjusted the number of counterweights, the length of the telescopic shaft 3 can be automatically locked after it is lifted from the base, preventing the counterweights from falling off due to the rotation of the handle sleeve 4 during movement.

[0060] like Figure 18 As shown, this utility model also provides a weightlifting device, including the aforementioned adjustable weightlifting device handle and a plurality of counterweight plates 7. As... Figures 19-20 As shown, the counterweight plate 7 has a through hole 71 in the middle for the telescopic shaft 3 to pass through. The weightlifting device can be a dumbbell or a barbell. By adjusting the length of the telescopic shaft 3, the number of counterweight plates 7 hanging on the telescopic shaft 3 can be adjusted, thereby adjusting the weight of the weightlifting device.

[0061] like Figures 19-20As shown, in one embodiment of this utility model, one side of the counterweight 7 is provided with a dovetail-shaped groove 72, and the other side of the counterweight 7 is provided with a locking block 73 corresponding to the shape of the groove 72. A mounting plate 74 is fixedly provided on the outer side of the mounting plate 6. The outer side of the mounting plate 74 is provided with a mounting groove or mounting block corresponding to the locking block 73 or the groove 72, for connection with each counterweight 7. In this embodiment, the mounting plate 74 is fixedly connected to the adjustable lifting equipment handle. Each counterweight 7 and the mounting plate 74 are interconnected axially on the telescopic shaft 3. When the telescopic shaft 3 carries a certain number of counterweights 7, the telescopic shaft 3 limits the radial upper limit of each counterweight 7. The mounting plate 74, the groove 72, and the locking block 73 of the counterweight 7 can limit the axial movement of each counterweight 7, ensuring the connection stability between each counterweight 7 and the adjustable lifting equipment handle. In addition, the mounting plate 74 also has the following functions: 1. The maximum and minimum total weight of the weightlifting equipment can be changed by altering the weight of the mounting plate 74; 2. The mounting plate 74, combined with the semi-adjustable plate 68 and semi-fixed plate 69, forms a whole, improving aesthetics and coordination; 3. The adjustable weightlifting equipment handle and counterweight plate 7 are connected by the mounting plate 74. If different weight counterweight plates 7 need to be replaced, the same handle can be used, and only the mounting plate 74 needs to be replaced for connection and use. The mounting plate 74, semi-fixed plate 69, and semi-adjustable plate 68 adopt a method of wrapping around the handle mounting plate 6, making the appearance more integrated, improving the coordination and aesthetics of the appearance, and also allowing the weight to be shifted towards the center of gravity. The small distance between the inner sides of the left and right counterweight plates 7 improves the left and right balance of the weightlifting equipment during use. The counterweight plate 7 of the weightlifting equipment provided in this embodiment of the utility model has the functions of preventing detachment and loosening. The cooperation between the slot 72 and the block 73 of the counterweight plate 7 and the cooperation between the telescopic shaft 3 and the through hole 71 of the counterweight plate 7 realizes the positioning of 6 degrees of freedom: the cooperation between the slot 72 and the block 73 of the counterweight plate 7 realizes the positioning of 4 degrees of freedom in the longitudinal and transverse directions; the cooperation between the telescopic shaft 3 and the through hole 71 of the counterweight plate 7 realizes the positioning of 2 degrees of freedom in the vertical direction.

[0062] like Figures 15-16 As shown, in one embodiment of this utility model, the side of the mounting plate 6 is provided with bolt holes for connecting with the mounting piece. Additionally, the bottom of the mounting piece 74 is provided with a slot corresponding to the locking groove 602, allowing the locking plate 60 to enter and exit. Furthermore, for ease of assembly, the locking plate 60 can be configured as a split type, with one part located within the mounting plate 6 and the other part within the mounting piece 74. Further, the inner side of the mounting piece 74 is provided with a slot to accommodate the sliding stroke of the hanging plate 651. The manufacturing process of the mounting piece 74 can be adjusted according to market requirements, such as casting, sheet metal processing, or injection molding.

[0063] To prevent the counterweights from jamming together due to poor engagement when they are connected via slots and blocks, such as... Figures 19-20As shown, in one embodiment of this utility model, the slot 72 includes a first segment 721 and a second segment 722 connected sequentially from top to bottom. The first segment 721 is V-shaped, and the second segment 722 is rectangular. The first segment 721 can guide the counterweight 7 into the slot 72 below it when the counterweight 7 does not properly engage with the block 73, thus ensuring a good connection and preventing the oblique block from getting stuck due to spatial misalignment with the oblique slot. Furthermore, there is a rounded transition surface between the first segment 721 and the second segment 722. Furthermore, the bottom of the second segment 722 is a non-through design, forming a limiting edge 723 at the bottom, which ensures accurate alignment of the through holes 71 after multiple counterweights 7 are engaged, avoiding inaccurate positioning of the through holes 71 and difficulty in adjusting the position. Furthermore, the bottom of the block 73 has a downwardly inclined guide slope 731 to facilitate insertion into the slot 72.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable weight lifting apparatus handle, characterized by, The device comprises a rotating sleeve, a fixed sleeve and two telescopic shafts, the rotating sleeve is rotatably arranged on the outer periphery of the fixed sleeve, and the telescopic shafts are oppositely arranged in the fixed sleeve and can slide along the axial direction of the fixed sleeve. The side wall of the rotating sleeve is provided with two oppositely arranged helical guide grooves, the side wall of the fixed sleeve is provided with two oppositely arranged linear track grooves, and the ends of the telescopic shafts close to each other are provided with guide shafts extending outward along the radial direction of the telescopic shafts, and the two guide shafts are sequentially inserted into the two track grooves and the two guide grooves, respectively. The outer periphery of the rotating sleeve is sleeved with a handle sleeve, the two ends of the handle sleeve are fixedly provided with rotating discs, and the rotating discs are fixedly connected with the ends of the rotating sleeve; the two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are sleeved with mounting discs. The inner side of the edge of the rotating disc is provided with an annular driving plate, the outer edge of the driving plate is wavy, forming wave crests and wave troughs; the inside of the mounting disc is provided with adjusting grooves arranged along the direction parallel to the axial direction of the mounting disc, the adjusting grooves are provided with adjusting plates which can slide along the adjusting grooves; a spring is arranged between one end of the adjusting plate and the inner end of the adjusting groove, so that the other end of the adjusting plate abuts against the outer edge of the driving plate; the outer side of the adjusting plate is provided with a hanging plate extending along the radial direction of the mounting disc, the two sides of the mounting disc are provided with sliding grooves corresponding to the hanging plate, and the sliding grooves extend along the direction parallel to the axial direction of the mounting disc; the hanging plate is arranged in the sliding groove, and the end of the hanging plate is located outside the sliding groove; the bottom of the mounting disc is provided with a semicircular half adjusting piece, and the inner sides of the two ends of the half adjusting piece are provided with hanging grooves corresponding to the sliding grooves; when the end of the adjusting plate abuts against the wave crest or the wave trough of the outer edge of the driving plate, the hanging plate slides into the hanging groove; when the end of the adjusting plate abuts against the wave trough or the wave crest of the outer edge of the driving plate, the hanging plate slides out of the hanging groove.

2. The adjustable weight lifting apparatus handle of claim 1, wherein, The top of the mounting disc is fixedly provided with a half fixing piece, and the half fixing piece is connected with the two ends of the half adjusting piece and forms an annular shape.

3. An adjustable weight lifting apparatus handle according to claim 1 or 2, wherein, The two ends of the handle sleeve are provided with fixed slots, the two ends of the rotating sleeve are provided with positioning slots, one end of the inner wall of the central hole of the rotating disc is provided with a key corresponding to the fixed slot, and the other end is provided with a key corresponding to the positioning slot; the two ends of the fixed sleeve are provided with limiting slots, and the inner wall of the central hole of the mounting disc is provided with a key corresponding to the limiting slot.

4. The adjustable weight lifting apparatus handle of claim 3, wherein, The number of the fixed slots is two, and the handle sleeve is symmetrically arranged with the axis as the symmetry axis; the number of the positioning slots is two, and the rotating sleeve is symmetrically arranged with the axis as the symmetry axis.

5. The adjustable weight lifting apparatus handle of claim 1 or 2, wherein, The end of the guide shaft is provided with a rotating piece.

6. The adjustable weight lifting apparatus handle of claim 1 or 2, wherein, The top of the telescopic shaft is provided with a plurality of positioning grooves which are uniformly distributed along the axial direction of the telescopic shaft; the top of the two ends of the fixed sleeve is provided with a notch corresponding to the positioning groove; the mounting disc is internally provided with a lock plate which can vertically slide, the middle of the lock plate is provided with a lock hole and is sleeved on the end of the fixed sleeve; the top of the lock hole of the lock plate normally penetrates through the notch and is located in the positioning groove; the bottom of the mounting disc is provided with a lock slot corresponding to the lock plate, the bottom of the lock plate penetrates through the lock slot and is located outside the mounting disc.

7. The adjustable weight lifting apparatus handle of claim 6, wherein, The top of the lock plate and the top of the mounting disc are provided with a spring, and the top of the lock hole is provided with a lock piece which extends downward.

8. A weight lifting device characterized by, The adjustable weight lifting equipment handle according to any one of claims 1 to 7 and a plurality of weight plates are included; the middle of the weight plate is provided with a through hole for the telescopic shaft to pass through.

9. The weight lifting apparatus of claim 8, wherein, One side of the weight plate is provided with a dovetail-shaped clamping groove, and the other side of the weight plate is provided with a clamping block corresponding in shape to the clamping groove; the outer side of the mounting disc is fixedly provided with a mounting piece, and the outer side of the mounting piece is provided with a mounting groove or a mounting block corresponding to the clamping block or the clamping groove.

10. The weight lifting apparatus of claim 9, wherein, The clamping groove includes a first section and a second section connected in sequence from top to bottom, the first section is V-shaped, and the second section is rectangular.

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