Adjustable weight lifting equipment handle and weight lifting equipment
By setting staggered guide grooves and track grooves on the handle of the weightlifting equipment, combined with the staggered design of the telescopic shaft, the problem of insufficient extension length of the existing handle is solved, and a greater lifting weight and better balance are achieved.
Patent Information
- Application Number
- CN202520031446.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing adjustable handles have a limited maximum extension length, which restricts the number of weight plates that can be lifted, thus limiting the maximum lifting weight of the weightlifting equipment.
An adjustable weightlifting equipment handle was designed. By setting staggered guide grooves and track grooves on the rotating sleeve and the fixed sleeve, combined with the staggered arrangement of the telescopic shaft, the maximum extension length of the handle is increased, thereby increasing the number of adjustable counterweight plates.
The increased maximum extension length of the handle allows for the lifting of more weight plates, increasing the maximum lifting weight of the weightlifting equipment, and maintaining better balance with the same extension length.
Smart Images
Figure CN223760318U_ABST
Abstract
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 lifting 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 and adjusting the lifting weight. However, the maximum extension length of current adjustable-length handles is relatively small, limiting the maximum number of weight plates that can be raised, thus limiting the maximum lifting weight of the weightlifting equipment.
[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 invention is to provide an adjustable handle for weightlifting equipment, which can increase the maximum extension length of the handle. When applied to weightlifting equipment with an adjustable number of counterweights, it can lift more counterweights and increase the maximum lifting weight of the weightlifting equipment.
[0005] Another objective of this invention is to provide a weightlifting device that includes the aforementioned adjustable weightlifting device handle, which can lift a greater number of counterweight plates and increase the maximum lifting weight of the weightlifting device.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An adjustable weightlifting equipment handle includes a handle sleeve, a rotating sleeve, a fixed sleeve, and two telescopic shafts. The handle sleeve is sleeved on the outer periphery of the rotating sleeve and fixedly connected to both ends of the rotating sleeve. The rotating sleeve is rotatably disposed on the outer periphery of the fixed sleeve. The telescopic shafts are disposed opposite to the fixed sleeve and can slide along the axial direction of the fixed sleeve.
[0008] The side wall of the rotating sleeve is provided with two opposing spiral guide grooves, and the two guide grooves are staggered in the axial direction of the rotating sleeve at their ends that are close to each other.
[0009] The side wall of the fixed sleeve is provided with two straight track grooves arranged opposite each other, and the two track grooves are staggered in the axial direction of the fixed sleeve at their ends that are close to each other.
[0010] The telescopic shafts are provided with protrusions extending outward along the axial direction of the telescopic shafts at their respective ends, and the protrusions of the two telescopic shafts are staggered in the axial direction of the fixed sleeve; the protrusions are provided with guide shafts extending outward along the radial direction of the telescopic shafts, and the two guide shafts are respectively inserted into the two track grooves and the two guide grooves in sequence.
[0011] According to one embodiment of the present invention, a rotating element is provided at the end of the guide shaft.
[0012] According to one embodiment of the present invention, a rotating disk is fixedly provided at both ends of the handle sleeve, and the rotating disk is fixedly connected to the end of the rotating sleeve; both ends of the fixed sleeve are located outside the rotating sleeve, and both ends of the fixed sleeve are fitted with mounting plates.
[0013] 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.
[0014] 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.
[0015] 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.
[0016] 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.
[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] The adjustable weightlifting equipment handle and the weightlifting equipment provided in this embodiment of the invention, when in use, increase the maximum extension length of the telescopic shaft due to the staggered arrangement of the two guide shafts. That is, a handle of equal length increases the maximum extension length of the telescopic shaft. When used on dumbbells or barbells with adjustable weight plates, this increases the number of adjustable weight plates, thereby adjusting the adjustable weight of the dumbbells or barbells. Conversely, under the condition of the same maximum extension length of the telescopic shaft, the handle of this invention can be shortened. When used on dumbbells or barbells with adjustable weight plates, the weight of the dumbbells or barbells can be closer to the center of gravity, reducing the torque of the weight plates at both ends. This allows for better lateral balance when holding the dumbbells or lifting the barbell during exercise. 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 structure of the adjustable weightlifting equipment handle provided in this embodiment of the 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 A schematic diagram of the rotating sleeve of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;
[0026] Figure 4 A schematic diagram of the structure of the fixing sleeve for the adjustable weightlifting equipment handle provided in an embodiment of this utility model;
[0027] Figure 5 A schematic diagram of the telescopic shaft of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;
[0028] Figure 6 A schematic diagram of the handle sleeve of the adjustable weightlifting equipment handle provided in an embodiment of this utility model;
[0029] Figure 7 This is a schematic diagram of the structure of an adjustable weightlifting device handle provided in another embodiment of the present invention;
[0030] Figure 8 A schematic diagram of the rotating disk of an adjustable weightlifting equipment handle provided in another embodiment of the present invention;
[0031] Figure 9 A schematic diagram of another angle of the rotary disc of the adjustable weightlifting equipment handle provided in another embodiment of the present invention;
[0032] Figure 10 A schematic diagram of the mounting plate for an adjustable weightlifting equipment handle provided in another embodiment of the present invention;
[0033] Figure 11 A schematic diagram of the mounting plate of the adjustable weightlifting equipment handle from another angle, according to another embodiment of the present invention;
[0034] Figure 12 A schematic diagram of the structure of an adjustable weightlifting device handle provided in another embodiment of the present invention;
[0035] Figure 13 This is a schematic diagram of the structure of the weightlifting equipment provided in an embodiment of the present utility model;
[0036] Figure 14 A schematic diagram of the structure of the counterweight plate of the lifting equipment provided in this embodiment of the utility model;
[0037] 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.
[0038] Explanation of reference numerals in the attached figures:
[0039] 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; 31. Protrusion; 32. Guide shaft; 321. Rotating component; 34. Positioning groove; 4. Handle sleeve; 41. Fixed groove; 5. Rotating disk; 52. Rib; 6. Mounting disk; 60. Locking plate; 601. Locking hole; 602. Locking groove; 603. Spring; 604. Locking piece; 62. Threaded positioning hole; 7. Counterweight piece; 71. Through hole; 72. Slot; 721. First section; 722. Second section; 723. Limiting stop; 73. Locking block; 731. Guide slope; 74. Mounting piece. Detailed Implementation
[0040] 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.
[0041] 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.
[0042] like Figures 1-6As shown, this utility model embodiment provides an adjustable lifting equipment handle, including a rotating sleeve 1, a fixed sleeve 2, two telescopic shafts 3, and a handle sleeve 4. The handle sleeve 4 is sleeved on the outer periphery of the rotating sleeve 1 and fixedly connected to both ends of the rotating sleeve 1. The rotating sleeve 1 is rotatably disposed on the outer periphery of the fixed sleeve 2. The telescopic shafts 3 are disposed opposite 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, with the ends of the two guide grooves 11 being staggered in the axial direction of the rotating sleeve 1. The side wall of the fixed sleeve 2 has two opposing linear track grooves 21, with the ends of the two track grooves 21 being staggered in the axial direction of the fixed sleeve 2. The ends of the two telescopic shafts 3 are provided with protrusions 31 extending outward along the axial direction of the telescopic shafts 3, and the protrusions 31 of the two telescopic shafts 3 are staggered in the axial direction of the fixed sleeve 2. The protrusion 31 is provided with a guide shaft 32 extending radially outward along the telescopic shaft 3, and the two guide shafts 32 are staggered in the axial direction of the fixed sleeve 2. The two guide shafts 32 are respectively inserted into the two track grooves 21 and the two guide grooves 11 in sequence.
[0043] When using the adjustable weightlifting equipment handle provided in this embodiment, rotating the handle sleeve 4 causes the rotating sleeve 1 to rotate. The spiral guide groove 11 on the rotating sleeve 1 can drive the guide shaft 32 to move along the axial direction of the fixed sleeve 2 in the track groove 21 of the fixed sleeve 2, thereby driving the two telescopic shafts 3 to slide in opposite directions in the fixed sleeve 2 for extension and retraction, thus obtaining a handle with adjustable length. Because the ends of the two telescopic shafts 3 are provided with axially extending protrusions 31, and the two protrusions 31 are staggered, and the guide shaft 32 is provided on the protrusions 31, the two guide shafts 32 are also staggered. This increases the maximum extension length of the telescopic shafts 3 (the extension length of the telescopic shafts 3 is the distance between the guide shafts 32 and the outer end of the track groove 21). That is, the handle of the same length increases the maximum extension length of the telescopic shafts 3. When used on dumbbells or barbells with adjustable weight plates, the number of adjustable weight plates can be increased (the number of weight plates is adjusted by the extension length of the telescopic shafts 3), thereby adjusting the adjustable weight of the dumbbells or barbells. Conversely, under the condition that the maximum extension length of the telescopic shafts 3 is the same, the handle of this utility model can be shortened. When used on dumbbells or barbells with adjustable weight plates, the weight of the dumbbells or barbells can be closer to the center of gravity, reducing the torque of the weight plates at both ends. When holding the dumbbells or lifting the barbell, the left and right balance can be better maintained. Furthermore, the first ends of the two guide grooves 11 on the rotating sleeve 1 of this utility model are staggered, and the third ends of the two track grooves 21 on the fixed sleeve 2 are staggered, which can cooperate with the staggered guide shafts 32 to increase the maximum extension length of the telescopic shaft 3.
[0044] like Figures 3-5 As shown, in a preferred embodiment of this utility model, the first ends of the two guide grooves 11 are located on opposite sides of the rotating sleeve 1, i.e., the angle difference between them is 180 degrees. Similarly, the two track grooves 21 are located on opposite sides of the fixed sleeve 2, and the angle difference between them is also 180 degrees; the two guide shafts 32 are located within the two track grooves 21, and therefore the angle difference between them is also 180 degrees.
[0045] 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.
[0046] like Figure 7 As shown, to further improve the movement accuracy and positioning precision of the telescopic shaft 3, in one embodiment of this utility model, a rotating disk 5 is fixedly provided at both ends of the handle sleeve 4, and the rotating disk 5 is fixedly connected to the end of the rotating sleeve 1. The rotating disk 5 can be marked with gear numbers to correspond to the telescopic length of the telescopic shaft 5. The user only needs to look at the gear number on the rotating disk 5 to know the telescopic length of the telescopic shaft and position it at that gear, thus improving positioning accuracy. In addition, the rotating disk 5 can also be used as a hand guard. The two ends of the fixed sleeve 2 are located outside the rotating sleeve 1, and each end of the fixed sleeve 2 is fitted with a mounting plate 6, which is used to connect to the counterweight plate of a weightlifting device (such as a dumbbell or barbell). The mounting plate 6 and the rotating disk 5 are rotatably abutted against each other.
[0047] like Figure 1 , Figure 2 , Figure 6 As 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.
[0048] like Figure 8 , Figure 9As shown, in one embodiment of this utility model, the rotating disk 5 is shaped like a weight, with evenly distributed numbers of stops on its inclined surface. Each rotation of an angle changes the stop by one. Applied to dumbbells or barbells with adjustable counterweights, the number of stops can be changed according to the number of stops and the weight being adjusted. Specifically, a 22.5-degree rotation of the handle sleeve 4 corresponds to one stop, with a total of 16 stops. The values on the stops 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.
[0049] Furthermore, such as Figures 7-9 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. Preferably, there are two positioning slots 12 at the end of the rotating sleeve 1, with an angle difference of 180 degrees (i.e., symmetrically arranged about the axis of the rotating sleeve 1), allowing for interchangeability of the left and right molds. Similarly, there are two fixing slots 41 at the end of the handle sleeve 4, with an angle difference of 180 degrees (symmetrically arranged about the axis of the handle sleeve 4), 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.
[0050] like Figure 4 , Figure 7 , Figures 10-11 As 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, which connect to the key on the inner wall of the central hole of the mounting plate 6. These limiting slots can be distributed 180 degrees opposite each other, making the mounting plate 6 usable from both sides, reducing production costs and improving installation efficiency. In addition, 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 fixed connection by bolts. Furthermore, the end of the fixing sleeve 2 is also provided with a shaft retaining ring 25 to limit the mounting plate 6 axially.
[0051] like Figure 5 , Figure 11 , Figure 12As 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 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.
[0052] like Figure 13 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 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.
[0053] 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 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 adjustable weightlifting equipment handle and the counterweight plate 7 are connected by the mounting plate 74. If different weights of 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 adopts 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-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.
[0054] 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 74. 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.
[0055] 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.
[0056] 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 adjustable weight lifting equipment handle comprises a handle sleeve, a rotating sleeve, a fixed sleeve and two telescopic shafts, the handle sleeve is sleeved on the outer periphery of the rotating sleeve and is fixedly connected with both ends of the rotating sleeve, 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 helical guide grooves arranged oppositely, and the ends of the two guide grooves close to each other are staggered in the axial direction of the rotating sleeve. The side wall of the fixed sleeve is provided with two linear track grooves arranged oppositely, and the ends of the two track grooves close to each other are staggered in the axial direction of the fixed sleeve. The end of the telescopic shaft close to each other is provided with a protruding part extending outward along the axial direction of the telescopic shaft, and the protruding parts of the two telescopic shafts are staggered in the axial direction of the fixed sleeve; the protruding part is provided with a guide shaft extending outward along the radial direction of the telescopic shaft, and the two guide shafts are sequentially inserted into the two track grooves and the two guide grooves, respectively.
2. The adjustable weight lifting apparatus handle of claim 1, wherein, The end of the guide shaft is provided with a rotating part.
3. An adjustable weight lifting apparatus handle according to claim 1 or 2, wherein, Both ends of the handle sleeve are fixedly provided with a rotating disc, the rotating disc is fixedly connected with the end of the rotating sleeve, both ends of the fixed sleeve are located outside the rotating sleeve, and both ends of the fixed sleeve are sleeved with a mounting disc.
4. The adjustable weight lifting apparatus handle of claim 3, 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 both ends of the fixed sleeve is provided with a notch corresponding to the positioning groove; the mounting disc is 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 passes through the notch and is located in the positioning groove; the bottom of the mounting disc is provided with a lock groove corresponding to the lock plate, and the bottom of the lock plate passes through the lock groove and is located outside the mounting disc.
5. The adjustable weight lifting apparatus handle of claim 4, wherein, The spring is arranged between the top of the lock plate and the top of the mounting disc, and the top of the lock hole extends downward and is provided with a lock piece.
6. The adjustable weight lifting apparatus handle of claim 3, wherein, Both ends of the handle sleeve are provided with a fixed slot, both ends of the rotating sleeve are provided with a positioning slot; one end of the inner wall of the center 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; both ends of the fixed sleeve are provided with a limiting slot, and the inner wall of the center hole of the mounting disc is provided with a key corresponding to the limiting slot.
7. The adjustable weight lifting apparatus handle of claim 6, wherein, The number of the fixed slots is two, and the handle sleeve is symmetrically arranged with the axis as the symmetric axis; the number of the positioning slots is two, and the rotating sleeve is symmetrically arranged with the axis as the symmetric axis.
8. A weight lifting device characterized by, The adjustable weight lifting equipment handle comprises a handle sleeve, a rotating sleeve, a fixed sleeve and two telescopic shafts, the handle sleeve is sleeved on the outer periphery of the rotating sleeve and is fixedly connected with both ends of the rotating sleeve, 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.
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 to the shape of 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.