Patent Application
20250205542
The present invention relates to the technical field of exercise apparatuses, especially a dumbbell handle, a dumbbell and a dumbbell base.
A dumbbell is a piece of commonly used fitness equipment, and currently dumbbells commercial available are divided into fixed-weight dumbbells and adjustable dumbbells. Among them, for the adjustable dumbbells, dumbbells of different weights are made by adjusting a number of weight plates. Usually, for the adjustable dumbbells, a plurality of weight options are provided on the dumbbells, during use, by stretching or reducing the dumbbell handle to increase or remove weight plates, the dumbbells can have different weights and can be used conveniently for exercise in different stages. However, the number of adjustable options for the dumbbells are usually dependent on the weight plates that can be installed in either sides of the dumbbells, and for each option the weight is a sum of the weight of the two weight plates and the dumbbell handle, and by such configuration, the adjustable dumbbells have few adjustable options, and during use, frequently, as the weight differences between the options are big than what the user can bear for each increase, especially for women who are weak in strength, the dumbbell cannot satisfy the requirements of users satisfactorily.
In view of the technical problem that the adjustable dumbbells have few adjustable options, and the weight adjusted by each option is too big, the present invention provides a dumbbell, a dumbbell handle and a dumbbell base, and with which the adjustable options of the dumbbell can be increased efficiently, and the problem that the weight increased or reduced by each adjustment is too big can be overcome.
To address the foregoing problems, the technical solutions that the present invention provides are:
A dumbbell handle, comprising: a handle body, wherein a first cavity is provided in the handle body; a gear rotation assembly, wherein the gear rotation assembly comprises a planetary gear mechanism and a gear shaft, the planetary gear mechanism is sleeved over an end of the gear shaft, another end of the gear shaft is sleeved in the first cavity of the handle body; the gear shaft is provided with a second cavity, at least one first protruding block is respectively provided on both ends of the second cavity of the gear shaft; a stretchable shaft, wherein the stretchable shaft is sleeved in the second cavity in the gear shaft, at least one threaded slot engaging with the at least one first protruding block is provided in the stretchable shaft, by rotating the planetary gear mechanism the gear shaft is driven to rotate and the stretchable shaft is driven to move axially in the second cavity of the gear shaft; a cam disc mechanism, wherein the cam disc mechanism comprises a drive disc and a driven disc, the drive disc and the driven disc are engaged by sliding, a flexible piece is provided at a side of the driven disc far away from the drive disc, the drive disc is sleeved over an end of the gear shaft, the drive disc is driven to rotate by the gear shaft and drives the driven disc to make reciprocating linear movement.
In the present invention, an attachment of the dumbbell is half in weight to a weight plate, the driven disc is configured to engage with the attachment, the planetary gear mechanism comprises a ring gear, a sun gear and three planet gears, and is applied in the dumbbell handle. During use, by rotating the planetary gear mechanism, the gear shaft is driven to rotate, due to the at least one first protruding block provided respectively at both ends of the second cavity of the gear shaft and the threaded slots provided in the stretchable shaft for engaging with the at least one first protruding block, when the gear shaft rotates, the stretchable shaft is driven to make axial movement in the second cavity of the gear shaft, that is, stretching and retraction of the stretchable shaft in the second cavity; as the drive disc is sleeved over an end of the gear shaft, and a flexible piece is provided at a side of the driven disc far away from the drive disc, the drive disc is driven to rotate by rotation of the gear shaft, so that the driven disc is driven to make reciprocating linear movement along an axial direction of the gear shaft, so as to realize connection and separation of the driven disc and the attachment of the dumbbell. For the foregoing dumbbell handle, by using the planetary gear mechanism (comprising a ring gear, a sun gear and three planet gears), and taking use of the multiple relationship between the number of teeth of the ring gear and the number of teeth of the planet gears, the stretchable shaft in the dumbbell handle can be adjusted by a smaller thread pitch, so that the stretchable shaft can be accurately and quickly extended and retracted, the quick adjustment of the weight plates is made possible, that is, the adjustment of the weight options of the dumbbell; in the meanwhile, by the engagement between the cam disc structure and the gear shaft and the gear shaft and the stretchable shaft, the stretchable shaft can be extended or retracted in the dumbbell handle (adjusting the weight options of the dumbbell), engagement and separation between the driven disc and the attachment of the dumbbell can be realized, so that assembly and disconnection of the attachment of the dumbbell can be done, compared with conventional adjustable dumbbell, by the assembly and detachment of the attachment of the dumbbell, the adjustable options are increased, and the problem that as the adjustable weight between each of the options is too big and goes beyond the weight that users can bear to increase and exercise effects are affected, especially for women who are weak in strength has been overcome.
Optionally, the threaded slots comprise alternately connected flat threaded slots and diagonal threaded slots, and a thread pitch of the flat threaded slots is smaller than or equals a thread pitch of the diagonal threaded slots.
Optionally, the drive disc is provided with a hollow pillar that is sleeved over the end of the gear shaft, an end of the hollow pillar is provided with a ring boss, first crests and first troughs are provided intermittently and circumferentially along the ring boss, the driven disc is provided with a second hollow pillar, and the second hollow pillar is sleeved over the first hollow pillar, an attachment supporting piece is provided outside the second hollow pillar, second crests and second troughs are provided intermittently and circumferentially on an end of the second hollow pillar close to the ring boss, the first crests and the second troughs are correspondingly provided, and the first troughs and the second crests are correspondingly provided.
Optionally, the flexible piece is correspondingly provided beside the attachment supporting piece.
Optionally, at least one first groove is provided in the gear shaft, a position of the at least one first groove is provided corresponding to the at least one first protruding block, and at least one first bulge meshing with the at least one first groove is corresponding provided on the drive disc.
Optionally, the present invention further comprises at least one first flange and at least one second flange, both ends of the dumbbell handle are provided with the at least one first flange, the at least one first flange at an end of the handle body is connected rotatably with the planetary gear mechanism; the planetary gear mechanism comprises a ring gear, a sun gear and three planet gears, the ring gear and the sun gear engage with the planet gears; the cam disc mechanism is provided on the second flange, the second flange engages with the ring gear by clearance fit, and the at least one first flanges, the planetary gear mechanism and the at least one second flange are fixed by threaded rods.
Optionally, the present invention further comprises a connection pin assembly, wherein a connection groove is provided along an edge of the at least one second flange far away from the gear mechanism, the connection pin assembly is slidably provided in the connection groove, so as to connect the ring gear and the stretchable shaft.
In the meanwhile, the present invention further provides a dumbbell, wherein the dumbbell comprises the dumbbell handle, attachments of the dumbbell and weight plates are evenly provided at both ends of the dumbbell handle, and the attachments of the dumbbell are provided in between first weight plates close to the dumbbell handle and the cam disc mechanism.
Optionally, supporting grooves for connection and engagement with the at least one driven disc are provided in the attachments of the dumbbell.
Furthermore, the present invention provides a dumbbell base, and the dumbbell base is configured to place the dumbbell, a supporting structure is provided on the dumbbell base and the supporting structure engages with the dumbbell base for adjusting a length of the dumbbell handle.
With the technical solutions provided in the present invention, compared with the prior art, the present invention has the following beneficial effects:
To further understand the present invention, a detailed description is given to the present invention in conjunction with the drawings and the embodiments.
Hereinafter a detailed description will be given to the present invention in conjunction with the drawings and the embodiments. It shall be comprehensible that, the embodiments given here are only used to understand the present invention rather than to limit the present invention. Further, it shall be noted that, to ease description, in the drawings only those related to the present invention are shown. In the present invention, terms such as first, second, are used to make it convenient to describe the technical solutions of the present invention, and are not intended for limitation; they are general terms and shall not be construed to limit the technical solutions of the present invention. It shall be understood that, the embodiments and features in the embodiments of the present invention can be combined together. In the description of the present invention, it shall be explained that, spatial or directional relationships indicated by terms “central”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner” and “outer” are spatial or directional relationships as indicated in the drawings, only to ease and simplify description of the present invention, rather than indicating that the device or component must have a specific direction, or be manufactured and operated in a specific direction, therefore shall not be taken as restriction on the present invention. Furthermore, terms “first”, “second”, “third” are only for description, and shall not be understood to indicate or imply relative importance. Unless indicated or limited explicitly otherwise, terms “installation”, “connection”, “connected” shall be understand broadly, for example, connection can be fixed connection or detachable connection or integral connection; connection can be mechanical connection, electrical connection; connection can be direct connection or indirect connection via an intermediate medium, or internal communication between two parts. For those of ordinary skill in the art, the specific contents of the foregoing terms in the present invention can be understood as per specific conditions. The technical solutions in the same embodiment or the technical solutions in different embodiments can be combined or arranged to form new technical solutions without contradiction, and the new technical solutions are covered in the protection scope of the present invention.
With reference to
In the present embodiment, a weight of attachments of the dumbbell is usually a half of the weight of weight plates 35, the at least one driven disc 11 is configured to be connected with the attachments 12 of the dumbbell, the planetary gear mechanism 3 comprises a ring gear 27, a sun gear 28 and three planet gears 29, and is applied in the dumbbell handle. During use, by rotating the planetary gear mechanisms 3 to drive the gear shaft 4 to rotate, as at least one first protruding block 6 is provided on both ends of the second cavity 5 of the gear shaft 4, threaded slots 8 corresponding to the at least one first protruding block 6 are provided in the stretchable shaft 7, the gear shaft 4 rotates and drives the stretchable shaft 7 to move axially in the second cavity 5 of the gear shaft 4, that is, extension and retraction of the stretchable shaft 7 in the second cavity 5; as the at least one drive disc 10 is sleeved over the gear shaft 4, the flexible piece 21 is provided at a side of the at least one driven disc 11 away from the at least one drive disc 10, the at least one drive disc 10 is driven to rotate by the gear shaft 4, and drives the at least one driven disc 11 to make reciprocating linear movements along an axial direction of the gear shaft 4, so as to connect or separate the at least one driven disc 11 and the attachments 12 of the dumbbell. For the foregoing dumbbell handle, by using the planetary gear mechanism 3 (comprising a ring gear 27, a sun gear 28 and three planet gears 29), and taking use of the multiple relationship between the number of teeth of the ring gear 27 and the number of teeth of the sun gear 28, the stretchable shaft 7 in the dumbbell handle can be adjusted by a smaller thread pitch, quick extension and retraction of the stretchable shaft 7 in the dumbbell handle can be done accurately, so as to realize fast adjustment of the number of weight plates, that is, adjustment of the weight options of the dumbbell; in the meanwhile, by cooperation relationships of the cam disc mechanisms, the flexible pieces 21 and the gear shafts 4 and the gear shafts 4 and the stretchable shafts 7, the stretchable shafts 7 can be retractable in the dumbbell handle (to adjust the weight options of the dumbbell), connection and separation of the at least one driven disc 11 and the attachments 12 of the dumbbell can be realized, assembly and detachment of the attachments 12 of the dumbbell can be realized, compared with conventional adjustable dumbbells, without requiring rotating the dumbbell handle 1, assembly and detachment of the attachments 12 of the dumbbell can be realized, the number of adjustable weight options is increased and the problem that due to the fact that the weight adjusted by changing the weight options is too big and goes beyond the weight that users can afford to increase and exercise effects are influenced, especially for women who are weak in strength can be overcome.
With reference to
In the present embodiment, by rotation of the planetary gear mechanism 3, the gear shaft 4 is driven to rotate, the at least one first protruding block 6 on the gear shaft 4 slides in the flat threaded slots 13, the gear shaft 4 drives the at least one drive disc 10 of the cam disc mechanism to rotate, the at least one drive disc 10 slides against the at least one driven disc 11, the at least one driven disc 11 makes reciprocating linear movement along a direction away from the at least one drive disc 10 and close to the attachment 12 of the dumbbell, until the at least one driven disc 11 is connected with the attachment 12 of the dumbbell, when adjusting to a neighboring weight option, the at least one first protruding block 6 of the gear shaft 4 transits from the flat threaded slots in the stretchable shaft 7 to the diagonal threaded slots 14 in the stretchable shaft 7, the gear shaft 4 drives the at least one drive disc 10 of the cam disc mechanism to rotate, so as to have the at least one driven disc 11 to make linear movement in a direction close to the at least one drive disc 10 and far away from the attachment 12 of the dumbbell, the at least one driven disc 11 is separated from the attachment 12 of the dumbbell. When the at least one first protruding block 6 slides in the flat threaded slots in the stretchable shaft 7, the stretchable shaft 7 does not extend or retract in the second cavity 5, therefore, when the first protruding block 6 transits between sliding into the diagonal threaded slots 14 to sliding out of the diagonal threaded slots 14, correspondingly, a length that the stretchable shaft 7 extends or retracts is exactly a thickness of a piece of weight plate. In this way, the weight plates 35 can be accurately adjusted as the length that the stretchable shaft 7 extends or retracts every time corresponds to an axial length of the diagonal threaded slots.
Therefore, in the present embodiment, by controlling the at least one first protruding block 6 to engage alternately with the flat threaded slots 13 and the diagonal threaded slots 14 in the stretchable shaft 7, quick assembly and detachment of the attachments of the dumbbell can be done. In the meanwhile, as the thread pitch of the flat threaded slots 13 is smaller than or equals the thread pitch of the diagonal threaded slots 14, by such configuration complete separation of the at least one driven disc 11 and the attachments 12 of the dumbbell can be efficiently promised. During application, the flat threaded slots 13 extend circumferentially along the stretchable shaft 7 and are perpendicular to an extension direction of the stretchable shaft, and by such configuration, when the at least one first protruding block 6 slides against the flat threaded slots 13 the stretchable shaft 7 does not move only the at least one drive disc 10 is driven to move. In another special embodiment, all the flat threaded slots can be parallel to each other and are parallel to end surfaces of the stretchable shaft.
With reference to
In the present embodiment, the first crests 17 and the second crests 19 are the same in size and shape, the first troughs 18 and the second troughs 20 are the same in size and shape, an angle between neighboring first crests 17 is bigger than or equals an angle that the at least one drive disc 10 is rotated for adjusting to a next weight option, at the initial position, the first crests 17 are provided corresponding to the second troughs 20, and the first troughs 18 are provided corresponding to the second crests 19. During use, rotating the planetary gear mechanism 3 to drive the gear shaft 4 to rotate, the at least one first protruding block 6 on the gear shaft 4 slides in the flat threaded slots 13 in the stretchable shaft 7, the gear shaft 4 drives the at least one drive disc 10 of the cam disc mechanism to rotate, the first crests 17 of the at least one drive disc 10 leave the second troughs 20 of the at least one driven disc 11 to the second crests 19, and drive the at least one driven disc 11 to make linear movement to a direction away from the at least one drive disc 10 and close to the attachment 12 of the dumbbell, until the attachment supporting pieces 22 of the at least one driven disc 11 are connected with the attachment 12 of the dumbbell, at this time, the at least one first protruding block 6 on the gear shaft 4 is exactly at ends of the flat threaded slots 13 of the stretchable shaft 7 (starting portions of the diagonal threaded slots), the attachment 12 of the dumbbell is assembled to the dumbbell handle; when adjusting to the next weight option, the at least one first protruding block 6 will slide in the diagonal threaded slots 14 in the stretchable shaft 7, the gear shaft 4 drives the at least one drive disc 10 of the cam disc mechanism to rotate, the first crests 17 of the at least one drive disc 10 will slide from the second crests 19 of the at least one driven disc 10 to the second troughs 20, under action of the flexible pieces, the at least one drive disc 11 will make linear movements to a direction close to the at least one drive disc 10 and far away from the attachment 12 of the dumbbell, until the first crests 17 and the first troughs 18 of the at least one drive disc 10 correspond respectively to the second troughs 20 and the second crests 19 of the at least one driven disc 11 so that the attachment supporting pieces 22 on the at least one driven disc 11 will be completely separated from the attachment 12 of the dumbbell.
With reference to
With reference to
With reference to
During actual application, as shown in
During application, as shown in
With reference to
With reference to
During actual application, positioning bulges are provided at the first weight plates 35 close to the dumbbell handle, third grooves 36 are provided in the stretchable shaft along a longitudinal direction of the stretchable shaft, the positioning bulges engage with the third grooves 36 to prevent the stretchable shaft from rotating.
With reference to
With reference to
During application, the supporting assembly comprises at least one second protruding block, and a dimension of the second protruding block is reduced gradually along with a reduction of distance to the connection pin assembly. A dimension of the second protruding block in an upper portion is smaller than a dimension of the connection slots 34, and the dimension of the second protruding block is gradually decreased along with a reduction in distance to the connection pin assembly. A cross section of the second protruding block is a trapezoid. By such configuration, the supporting assembly can support to a better extent the connection pin assembly. Specifically, when the assembled dumbbell is placed on the dumbbell support of the dumbbell base, the supporting assembly will support the connection pin assembly, so that the connection pin assembly is separated from the ring gear 27, rotating the ring gear 27, the gear shaft 4 will rotate correspondingly, and drive the stretchable shaft 7 to stretch or retract, so as to realize quick adjustment of the weight plates 35 and the installation and disconnection of the attachments 12 of the dumbbell 12.
In the foregoing paragraphs, a description is given to the present invention and embodiments thereof, the description is not restrictive, those shown in the drawings are some of the embodiments of the present invention, and the actual structures are not limited thereto. Therefore, all structural improvements and embodiments similar to the technical solutions of the present invention made by those of ordinary skill in the art without involving creative effort and departing from the essence of the present invention shall fall into the protection scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202121503854.3 | Jul 2021 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2021/117190 | 9/8/2021 | WO |
