Adjustable positioning weightlifting equipment handle and weightlifting equipment

Abstract

The utility model provides an adjustable positioning weightlifting equipment handle and weightlifting equipment, the adjustable positioning weightlifting equipment handle comprises a rotary sleeve, a fixed sleeve and two telescopic shafts, the side wall of the rotary sleeve is provided with two spiral guide grooves which are oppositely arranged; the side wall of the fixed sleeve is provided with two linear track grooves which are oppositely arranged, and the ends, close to each other, of the telescopic shafts are provided with guide shafts which extend outwards in the radial direction of the telescopic shafts. The telescopic shaft is provided with first ball plungers arranged in the radial direction of the telescopic shaft, a plurality of first positioning holes corresponding to the first ball plungers are formed in the side wall of the fixing sleeve, and ball heads of the first ball plungers are located in the first positioning holes in the normal state. In the telescopic process of the handle, positioning is accurate, the gear sense is high during gear shifting, and the situation that the next weight stack is lifted up by mistake can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of weightlifting equipment technology, and in particular to an adjustable positioning 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 for adjustment of the extension length at both ends, thereby raising different numbers of weight plates to achieve the purpose of adjusting the lifting weight. However, current adjustable-length handles suffer from inaccurate positioning during the extension and retraction process, and the shifting mechanism lacks a strong feel, sometimes accidentally raising the next weight plate.

[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 positioning handle for a weightlifting device, which provides precise positioning and a strong sense of gear shifting during the extension and retraction of the handle, thus avoiding the situation of accidentally lifting the next counterweight.

[0005] Another objective of this utility model is to provide a weightlifting device, which includes the aforementioned adjustable positioning weightlifting device handle. During the extension and retraction of the handle, the positioning is accurate, and the gear shifting feel is strong, which can prevent the next counterweight from being accidentally lifted.

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

[0007] An adjustable positioning 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 opposing spiral guide grooves on its sidewall, and the fixed sleeve has two opposing straight track grooves on its sidewall. The ends of the telescopic shafts that are close to each other have guide shafts extending radially outward from the telescopic shaft. The two guide shafts are sequentially inserted into the two track grooves and the two guide grooves. The telescopic shaft has a first ball-head plunger arranged radially along the telescopic shaft. The fixed sleeve has multiple first positioning holes corresponding to the first ball-head plunger, so that the ball head of the first ball-head plunger is normally located within the first positioning hole. The first positioning holes are evenly distributed along the axial direction of the fixed sleeve.

[0009] According to one embodiment of the present invention, a handle sleeve is fitted around the outer periphery of the rotating sleeve, and a rotating disk is fixedly provided at both ends of the handle sleeve. The rotating disk is fixedly connected to the end of the rotating sleeve. A positioning ring is provided inside the rotating disk, and a second positioning hole is provided on the outer side of the positioning ring, which is evenly distributed along the circumference of the positioning ring.

[0010] The two ends of the fixed sleeve are located outside the rotating sleeve, and each end of the fixed sleeve is fitted with a mounting plate. The mounting plate is provided with a second ball-head plunger corresponding to the second positioning hole. The second ball-head plunger is arranged in a direction parallel to the axial direction of the mounting plate, so that the ball head of the second ball-head plunger is normally located in the second positioning hole.

[0011] According to one embodiment of the present invention, the first positioning hole is provided on both opposite sides of the fixed sleeve;

[0012] The number of the first ball-head plungers is two, symmetrically arranged within the telescopic shaft; or the first ball-head plungers are double ball-head plungers.

[0013] According to one embodiment of the present invention, the number of the second ball-head plungers is multiple, and they are evenly distributed around the circumference of the mounting plate.

[0014] 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.

[0015] 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.

[0016] According to one embodiment of this utility model, the handle sleeve has fixed slots at both ends, and the rotating sleeve has positioning slots at both ends; one end of the inner wall of the central hole of the rotating disk has a key corresponding to the fixed slot, and the other end has a key corresponding to the positioning slot; the fixed sleeve has limiting slots at both ends, and the inner wall of the central hole of the mounting disk has a key corresponding to the limiting slot; there are two fixed slots, symmetrically arranged with the axis of the handle sleeve as the axis of symmetry; there are two positioning slots, symmetrically arranged with the axis of the rotating sleeve as the axis of symmetry.

[0017] And / or, the end of the guide shaft is provided with a rotating element.

[0018] This utility model also provides a weightlifting device, including the above-mentioned adjustable positioning 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.

[0019] 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.

[0020] 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.

[0021] Compared with the prior art, the advantages and beneficial effects of the embodiments of this utility model are as follows:

[0022] The adjustable positioning weightlifting device handle and weightlifting device provided in this embodiment have multiple positioning holes corresponding to the extension distance of the telescopic shaft during use. When the telescopic shaft is in a certain position, rotating the rotating sleeve drives the telescopic shaft to slide within the fixed sleeve. This requires overcoming the spring force of the first ball plunger, causing the ball head of the first ball plunger to be pushed back into the first ball plunger. After the telescopic shaft slides a fixed distance, the ball head of the first ball plunger falls back into the next first positioning hole and serves as a positioning device, remaining at that position while producing a metallic clicking sound. The user can determine how many fixed distances the telescopic shaft has moved by rotating the rotating sleeve and by the clicking sound. Furthermore, when the user does not operate the rotating sleeve, the telescopic shaft can also remain at a specific position due to the positioning between the ball head of the first ball plunger and the first positioning hole, preventing the telescopic shaft from moving. When applied to dumbbells or barbells with adjustable weight plates, each setting can be accurately positioned, preventing axial swaying of the telescopic shaft due to fit gaps, thus preventing weight plates from falling off and pulling the next dumbbell plate up. Attached Figure Description

[0023] 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:

[0024] Figure 1 A schematic diagram of the appearance of the adjustable positioning weightlifting device handle provided in an embodiment of this utility model;

[0025] Figure 2 An assembly diagram of the adjustable positioning weightlifting device handle provided for an embodiment of this utility model;

[0026] Figure 3 A schematic diagram of the rotating sleeve of the adjustable positioning weightlifting equipment handle provided in an embodiment of this utility model;

[0027] Figure 4 A schematic diagram of the structure of the fixing sleeve for the handle of the adjustable positioning weightlifting equipment provided in an embodiment of this utility model;

[0028] Figure 5 A schematic diagram of the telescopic shaft of the adjustable positioning weightlifting equipment handle provided in an embodiment of this utility model;

[0029] Figure 6 A schematic diagram of the structure of an adjustable positioning weightlifting device handle provided in another embodiment of this utility model;

[0030] Figure 7 A schematic diagram of the handle sleeve of an adjustable positioning weightlifting device handle provided in another embodiment of the present invention;

[0031] Figure 8 A schematic diagram of the rotating disk of the adjustable positioning weightlifting device handle provided in another embodiment of the present invention;

[0032] Figure 9 A schematic diagram of another angle of the rotary disk of the adjustable positioning weightlifting device handle provided in another embodiment of the present invention;

[0033] Figure 10 A schematic diagram of the mounting plate for the adjustable positioning weightlifting equipment handle provided in another embodiment of the present invention;

[0034] Figure 11 A schematic diagram of the mounting plate of the adjustable positioning weightlifting equipment handle at another angle, according to another embodiment of the present invention;

[0035] Figure 12 A schematic diagram of the structure of the adjustable positioning weightlifting device handle provided in another embodiment of the present invention;

[0036] Figure 13 This is a schematic diagram of the structure of the weightlifting equipment provided in an embodiment of the present utility model;

[0037] Figure 14 A schematic diagram of the structure of the counterweight plate of the lifting equipment provided in this embodiment of the utility model;

[0038] Figure 15 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.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Rotating sleeve; 11. Guide groove; 12. Positioning groove; 13. Shaft retaining ring; 2. Fixed sleeve; 21. Track groove; 22. First positioning hole; 23. Limiting groove; 24. Limiting hole; 25. Shaft retaining ring; 26. Notch; 3. Telescopic shaft; 32. Guide shaft; 321. Rotating component; 33. First ball-head plunger; 34. Positioning groove; 4. Handle sleeve; 41. Fixed groove; 5. Rotary disk; 51. Positioning ring Body; 511, Second positioning hole; 52, Rib; 6, Mounting plate; 60, Locking plate; 601, Locking hole; 602, Locking groove; 603, Spring; 604, Locking plate; 61, Second ball-head plunger; 62, Threaded positioning hole; 63, Blind hole; 7, 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

[0041] 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.

[0042] 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.

[0043] like Figures 1-5 As shown, this embodiment of the utility model provides an adjustable positioning weightlifting device 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 is provided with two oppositely arranged helical guide grooves 11, and the side wall of the fixed sleeve 2 is provided with two oppositely arranged linear track grooves 21. The ends of the two telescopic shafts 3 that are close to each other are provided with 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 in sequence. The telescopic shaft 3 is provided with a first ball head plunger 33 (or spring ball) arranged radially along the telescopic shaft 3. The side wall of the fixed sleeve 2 is provided with a plurality of first positioning holes 22 corresponding to the first ball head plunger 33. The plurality of first positioning holes 22 are evenly distributed along the axial direction of the fixed sleeve 2, and the ball head of the first ball head plunger 33 is normally located in the first positioning hole 22.

[0044] When using the adjustable positioning weightlifting device handle provided in this embodiment, rotating the rotating sleeve 1 causes the spiral guide groove 11 on the rotating sleeve 1 to drive the guide shaft 32 to move axially along the track groove 21 of the fixed sleeve 2. This, in turn, causes the two telescopic shafts 3 to slide in opposite directions within the fixed sleeve 2, thus extending and retracting, resulting in a handle with adjustable length. Each first positioning hole 22 corresponds to multiple positions, representing the extension distance of the telescopic shaft 3. When the telescopic shaft 3 is in a certain position, rotating the rotating sleeve 1 drives the telescopic shaft 3 to slide within the fixed sleeve 2. This requires overcoming the spring force of the first ball plunger 33, causing the ball head of the first ball plunger 33 to be pushed back into the first ball plunger 33. After the telescopic shaft 3 slides a fixed distance (the distance between the two first positioning holes 22), the ball head of the first ball plunger 33 falls back into the next first positioning hole 22 and serves as a positioning device, remaining at that position, while simultaneously producing a metallic clicking sound. Users can determine the distance the telescopic shaft 3 has moved by by observing the resistance and clicking sound when rotating the rotating sleeve 1. When the user is not operating the rotating sleeve 1, the telescopic shaft 3 can remain stationary at a specific position due to the positioning between the ball head of the first ball plunger 33 and the first positioning hole 22, preventing movement of the telescopic shaft 3. When applied to dumbbells or barbells with adjustable weight plates, each position can be accurately positioned, preventing axial swaying of the telescopic shaft 3 due to clearances, thus preventing weight plates from falling off and lifting the next dumbbell plate.

[0045] In one embodiment of this utility model, in order to further improve the moving accuracy and positioning accuracy of the telescopic shaft 3, there are two first ball plungers 33, which are symmetrically arranged, or the first ball plungers 33 are double ball plungers; correspondingly, the first positioning holes 22 are provided on both opposite sides of the fixed sleeve 2.

[0046] like Figure 2 , Figure 5 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.

[0047] like Figure 6As shown, to further improve the movement accuracy and positioning precision of the telescopic shaft 3, in one embodiment of this utility model, a handle sleeve 4 is fitted around the outer periphery of the rotating sleeve 1. A rotating disk 5 is fixedly mounted at both ends of the handle sleeve 4, and the rotating disk 5 is fixedly connected to the end of the rotating sleeve 1. A positioning ring 51 is provided inside the rotating disk 5, and second positioning holes 511 are evenly distributed circumferentially around the outer side of the positioning ring 51. Both ends of the fixed sleeve 2 are located outside the rotating sleeve 1, and a mounting disk 6 is fitted at both ends of the fixed sleeve 2. The mounting disk 6 is provided with a second ball-head plunger 61 corresponding to the second positioning hole 511. The second ball-head plunger 61 is arranged in a direction parallel to the axial direction of the mounting disk 6, so that the ball head of the second ball-head plunger 61 is normally located within the second positioning hole 511. In this embodiment, each second positioning hole 511 corresponds to the length extended by the telescopic shaft 3, forming different stops. When the handle sleeve 4 rotates, it functions similarly to the interaction between the first ball plunger 33 and the first positioning hole 22. Similarly, the second ball plunger 61 and the second positioning hole 511 ensure precise positioning during gear adjustment and produce a clicking sound when the gear is engaged. Applied to dumbbells or barbells with adjustable weight plates, this allows for accurate positioning of each gear, preventing axial swaying of the telescopic shaft due to clearances, thus preventing weight plates from falling off and lifting the next dumbbell plate. Preferably, there are multiple second ball plungers 61, evenly spaced around the circumference of the mounting plate 6. Furthermore, the first positioning hole 22 and the second positioning hole 511 correspond, ensuring that when the ball head of the first ball plunger 33 is in one of the first positioning holes 22, the ball head of the second ball plunger 61 is simultaneously in the corresponding second positioning hole 511, further enhancing gear positioning accuracy. The second ball plunger 61 is arranged axially rather than radially because: if it were radially arranged, the elasticity would be too low when it engages with the plastic rotating disk 5, resulting in a lack of tactile feedback (the feeling of preventing the handle sleeve 4 from rotating to other positions). Conversely, excessive elasticity would partially lift the plastic rotating disk 5, affecting its appearance. Furthermore, plastic parts develop grooves over time due to wear, reducing the tactile feedback. In this embodiment, the second ball plunger 61 is axially arranged, engaging with the iron positioning ring 51, providing tactile feedback even with low elasticity; the rotating disk 5's outer shell remains undeformed, preserving its appearance; and the iron-on-iron material combination prevents rapid wear.

[0048] like Figure 7As 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.

[0049] like Figure 8 , Figure 9 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 the thickness of one counterweight, thus adding or removing counterweights.

[0050] Furthermore, such as Figure 3 , Figure 6 , Figures 8-9 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 and the positioning ring 51. 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 also provide axial positioning for the positioning ring 51, as well as allow it to be inserted into the groove on the inner side of the positioning ring 51 to position its rotation direction, so that it can rotate synchronously with the rotating disk 5.

[0051] like Figure 4 , Figure 6 , Figures 10-11As 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 installation 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. Further, the mounting plate 6 has a circular blind hole 63 for installing the second ball-head plunger 61.

[0052] like Figure 12As shown, to prevent the telescopic shaft 3 from moving axially during use of the adjustable positioning weightlifting device handle and ensure safe operation, in one embodiment of this utility model, 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 positioning lifting device 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 readjust its length. 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 telescopic handle mechanism 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.

[0053] like Figure 13 As shown, this utility model also provides a weightlifting device, including the aforementioned adjustable and positioning weightlifting device handle and several counterweight plates 7. (As shown...) Figures 14-15 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.

[0054] like Figures 14-15As 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 positioning weightlifting 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 movement 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 positioning weightlifting equipment handle. In addition, the mounting plate 74 also has the following functions: 1. The maximum and minimum total weight of the lifting equipment can be changed by changing the weight of the mounting plate 74; 2. The adjustable positioning lifting equipment handle and the counterweight plate 7 are connected by the mounting plate 74. If it is necessary to replace the counterweight plate 7 with a different weight, the same handle can be used, and only the mounting plate 74 needs to be replaced for connection and use. The appearance structure of the mounting plate 74 adopts the method of wrapping 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 moved 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 lifting 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.

[0055] like Figures 10-11 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. The manufacturing process of the mounting piece 74 can be adjusted according to market requirements, such as casting, sheet metal processing, or injection molding.

[0056] To prevent the counterweights from jamming together due to poor engagement when they are connected via slots and blocks, such as... Figures 14-15As 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.

[0057] 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 positioning weight lifting apparatus handle, characterized by, 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.

2. The adjustable positioning weight equipment handle of claim 1, wherein, The telescopic shafts are provided with first ball head plungers arranged along the radial direction of the telescopic shafts, and the side wall of the fixed sleeve is provided with a plurality of first positioning holes corresponding to the first ball head plungers, so that the ball heads of the first ball head plungers are normally located in the first positioning holes. The outer periphery of the rotating sleeve is provided with a handle sleeve, and the two ends of the handle sleeve are fixedly provided with rotating discs which are fixedly connected with the ends of the rotating sleeve.

3. An adjustable positioning weight equipment handle according to claim 1 or 2, characterized in that, The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs.

4. The adjustable positioning weight equipment handle of claim 2, wherein, The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs.

5. The adjustable positioning weight equipment handle of claim 2, wherein, The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs.

6. An adjustable positioning weight equipment handle according to claim 5, wherein, The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs.

7. The adjustable positioning weight equipment handle of claim 2, wherein, The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are provided with mounting discs. The two ends of the fixed sleeve are located outside the rotating sleeve, and the two ends of the fixed sleeve are 8. A weight lifting device characterized by, The adjustable positioning weight lifting equipment handle according to any one of claims 2-7 and a plurality of weight plates are comprised; the weight plates are provided with through holes in the middle 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 plate, and the outer side of the mounting plate 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 comprises 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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