CN113144513A - Adjustable dumbbell - Google Patents
Adjustable dumbbell Download PDFInfo
- Publication number
- CN113144513A CN113144513A CN202011509895.3A CN202011509895A CN113144513A CN 113144513 A CN113144513 A CN 113144513A CN 202011509895 A CN202011509895 A CN 202011509895A CN 113144513 A CN113144513 A CN 113144513A
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- CN
- China
- Prior art keywords
- dumbbell
- telescopic rod
- main body
- telescopic
- sliding groove
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Classifications
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/0726—Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
- A63B21/00—Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
- A63B21/06—User-manipulated weights
- A63B21/072—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle
- A63B21/075—Dumb-bells, bar-bells or the like, e.g. weight discs having an integral peripheral handle with variable weights, e.g. weight systems with weight selecting means for bar-bells or dumb-bells
Abstract
The invention relates to an adjustable dumbbell, which comprises a dumbbell main body and dumbbell pieces accumulatively attached to two ends of the dumbbell main body, wherein the dumbbell main body comprises a holding rod and mounting parts arranged at two ends of the holding rod and used for connecting the dumbbell pieces, and further comprises a first telescopic rod and a second telescopic rod, and the number of the dumbbell pieces hung on the first telescopic rod and the second telescopic rod is controlled by extending out or retracting the first telescopic rod and the second telescopic rod in different directions from each other to two ends of the dumbbell main body, so that the weight of the dumbbell is adjusted. Wherein, first telescopic link and second telescopic link set up to the semicircle axle form, and first telescopic link and the crisscross setting of second telescopic link for the length of first telescopic link and second telescopic link has obtained the promotion of one time, has increased the quantity of adjustable dumbbell piece by a wide margin.
Description
Technical Field
The invention relates to the field of fitness equipment, in particular to a dumbbell capable of adjusting the number of dumbbell pieces, and particularly relates to an improvement on a telescopic rod structure.
Background
The dumbbell is a commonly used body-building apparatus, and an existing adjustable dumbbell, such as that proposed in patent publication No. CN111450475, is provided with two telescopic shafts which are arranged in a handle of the dumbbell in a penetrating manner, and the number of dumbbell pieces hung on the telescopic shafts is controlled by extending or retracting the telescopic shafts in different directions from two ends of the handle of the dumbbell, so that the weight of the dumbbell is adjusted. In this kind of structure, the telescopic shaft that adopts the round axle structure, the telescopic shaft pierces through the centre bore that the dumbbell handle has, its defect that has lies in: the length of the dumbbell handle is limited, for example, two round shaft type telescopic shafts are arranged in the dumbbell handle in a penetrating mode, the length of each telescopic shaft is only one half of the length of the dumbbell handle at most, the length of each telescopic shaft is limited, and the number of dumbbell pieces which can be adjusted by the telescopic shafts is greatly limited.
Disclosure of Invention
Therefore, in order to solve the problems, the invention provides an adjustable dumbbell with an optimized structure.
The invention is realized by adopting the following technical scheme:
the invention provides an adjustable dumbbell, which comprises a dumbbell main body and dumbbell pieces accumulatively attached to two ends of the dumbbell main body, wherein the dumbbell main body comprises a holding rod and mounting parts which are arranged at two ends of the holding rod and used for connecting the dumbbell pieces, and further comprises a first telescopic rod and a second telescopic rod, the first telescopic rod and the second telescopic rod penetrate into the dumbbell main body, the dumbbell main body is driven by the dumbbell main body to extend out or retract back to back from the dumbbell main body to hang the dumbbell pieces, so that the number of the dumbbell pieces at two ends of the dumbbell main body is adjusted, the first telescopic rod and the second telescopic rod are approximately in a semi-circular shaft shape, the first telescopic rod comprises a first semi-circular surface and a first diameter surface which are enclosed to form a semi-circular shaft shape, a first sliding groove which is formed in the length direction of the first telescopic rod is arranged on the first diameter surface, the second telescopic rod comprises a second semi-circular surface and a second diameter surface which are enclosed to form a semi-circular shaft shape, the dumbbell is characterized in that a second sliding groove formed in the length direction of the second telescopic rod is formed in the second diameter surface, the plane where the first diameter surface is located and the plane where the second diameter surface is located face to face, the first telescopic rod and the second telescopic rod are arranged in the dumbbell main body in a staggered mode, a first limiting block and a second limiting block which are matched with the first sliding groove and the second sliding groove respectively are fixedly arranged on the dumbbell main body, and the first limiting block and the second limiting block are in sliding fit in the first sliding groove and the second sliding groove respectively, so that circumferential rotation of the first telescopic rod and the second telescopic rod is limited.
Based on assembly and manufacturing considerations, it is preferable that the dumbbell main body has a first exposure hole and a second exposure hole at two ends thereof, the first exposure hole and the second exposure hole are respectively in a semicircular shape matching the shapes of the first telescopic rod and the second telescopic rod, and the first limiting block and the second limiting block are respectively and fixedly arranged in the first exposure hole and the second exposure hole.
Wherein, for the stability that improves first telescopic link and second telescopic link and assembly, it is preferred first telescopic link still includes the first slider of setting on first diametric plane, the second telescopic link still includes the second slider of setting on the second diametric plane, and first slider sliding connection is in the second spout, and second slider sliding connection is in first spout simultaneously, thereby first telescopic link and second telescopic link sliding connection.
Preferably, the first sliding groove is provided with a first end, the second sliding groove is provided with a second end, and when the first telescopic rod and the second telescopic rod extend out in a back-to-back mode, the first sliding block and the second sliding block can abut against the second end and the first end respectively, so that the first telescopic rod and the second telescopic rod are limited to be separated from each other.
Preferably, in order to improve the safety performance, one end of each of the first telescopic rod and the second telescopic rod, which points to the outer side of the dumbbell main body, is provided with a radially extending hooking part, and when the first telescopic rod and the second telescopic rod retract, the hooking parts can be hooked on the end faces at the two ends of the dumbbell main body, so that the first telescopic rod and the second telescopic rod are limited to retract into the dumbbell main body.
Preferably, the hooking part complements the ends of the first telescopic rod and the second telescopic rod pointing to the outer side of the dumbbell main body to be circular in order to improve the overall aesthetic property of the telescopic rod.
Preferably, the first telescopic rod and the second telescopic rod are connected with the dumbbell main body through spiral pairs in opposite rotation directions, so that the dumbbell main body is rotated to drive the first telescopic rod and the second telescopic rod to extend out of or retract into the dumbbell main body in a back-to-back mode.
Preferably, in view of manufacturing and cost, the first semi-circular surface and the second semi-circular surface are respectively provided with a first thread and a second thread with opposite rotation directions in a protruding manner, and the dumbbell main body is provided with a first spiral groove and a second spiral groove which are respectively connected with the first thread and the second thread in a matching manner.
Preferably, the first telescopic rod and the second telescopic rod have expanded diameter parts with expanded diameters at the ends pointing to the outer sides of the dumbbell main bodies.
Preferably, in order to ensure stable support of the telescopic rod on the dumbbell pieces, the dumbbell pieces are provided with clamping blocks and clamping grooves which are symmetrically arranged at 180 degrees, adjacent dumbbell pieces can be stacked at two ends of the dumbbell main body in an accumulating manner through clamping matching of the clamping blocks and the clamping grooves, and a connecting line of centers of the clamping blocks and the clamping grooves which are symmetrically arranged at 180 degrees in each group is in a plane where the first diameter surface or the second diameter surface is located.
The invention has the following beneficial effects: according to the dumbbell piece adjusting device, the first telescopic rod and the second telescopic rod are arranged in the semicircular shaft shape, and the first telescopic rod and the second telescopic rod are arranged in a staggered mode, so that the lengths of the first telescopic rod and the second telescopic rod are doubled, and the number of adjustable dumbbell pieces is greatly increased.
Drawings
FIG. 1 is a schematic view of an adjustable dumbbell according to an embodiment;
FIG. 2 is a schematic view of the first dumbbell pieces at the two ends of the dumbbell body and the dumbbell body in the embodiment;
FIG. 3 is a schematic illustration of a dumbbell sheet in an embodiment;
FIG. 4 is a schematic illustration of an example dumbbell body;
FIG. 5 is a cross-sectional view of the dumbbell body in the example;
FIG. 6 is an exploded view of the dumbbell body in the example;
FIG. 7 is a schematic view of an embodiment of a telescoping rod assembly;
FIG. 8 is a schematic view of a second telescoping pole in the example;
FIG. 9 is a cross-sectional view of the telescoping rod assembly of the embodiment;
FIG. 10 is a schematic view of an embodiment in which the dumbbell sheet mounting plate is mounted on one end of the dumbbell body;
FIG. 11 is a schematic view of a second telescoping rod and dumbbell piece in an embodiment;
FIG. 12 is a schematic view of the fixed assembly of the grip and flange drive of the embodiment;
FIG. 13 is a schematic view (angle one) of a flange drive of an embodiment;
FIG. 14 is a schematic view of a flange drive of an embodiment (angle two);
FIG. 15 is a schematic view of an embodiment planetary gear system;
FIG. 16 is an exploded view of an embodiment planetary gear system;
FIG. 17 is a sectional view of the gear shaft in the embodiment.
Detailed Description
To further illustrate the various embodiments, the invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. Those skilled in the art will appreciate still other possible embodiments and advantages of the present invention with reference to these figures. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The invention will now be further described with reference to the accompanying drawings and detailed description.
Referring to fig. 1-2, as a preferred embodiment of the present invention, an adjustable dumbbell is provided, which includes a dumbbell main body 10 having an "I" shape and a plurality of dumbbell pieces 20 installed at two ends of the dumbbell main body 10, wherein a first dumbbell piece 20 at two ends of the dumbbell main body 10 is fixedly connected to the dumbbell main body 10, and the remaining dumbbell pieces 20 are accumulatively installed on the first dumbbell piece 20 at two ends of the dumbbell main body 10, as shown in fig. 3, a dovetail and a dovetail groove are symmetrically provided at 180 ° on both left and right end faces of each dumbbell piece, and the accumulation of dumbbell pieces is realized by the matching connection of the dovetail and the dovetail groove on adjacent dumbbell pieces.
Referring to fig. 4 to 6, the dumbbell main body 10 includes a grip 1, flange transmission members 2 fixedly disposed at both ends of the grip 1, a planetary gear system 4 drivingly connected to the flange transmission members 2, and a telescopic rod assembly 6 extending through the interior of the dumbbell main body 10, the flange transmission members 2 and the planetary gear system 4 are butted to serve as mounting portions at both ends of the dumbbell main body 10 for connection to dumbbell plates, the telescopic rod assembly 6 includes a first telescopic rod 61 and a second telescopic rod 62 having substantially semicircular shaft shapes, the dumbbell main body 10 is driven by the flange transmission members 2 and the planetary gear system 4 by rotating the grip 1, and finally the first telescopic rod 61 and the second telescopic rod 62 are synchronously and oppositely extended or retracted, the first telescopic rod 61 and the second telescopic rod 62 hang dumbbell plates through central holes of the dumbbell plates, thereby adjusting the number of dumbbell plates at both ends of the dumbbell main body 10, specifically, referring to fig. 7-9, the telescopic rod assembly 6 comprises a first telescopic rod 61 and a second telescopic rod 62 with similar structures and approximately semi-circular shaft shapes, wherein the first telescopic rod 61 and the second telescopic rod 62 are arranged in a staggered way and are connected in a sliding way. Taking the second telescopic rod 62 as an example, the second telescopic rod 62 includes a second semicircular surface 620 and a second diameter surface 621 which are enclosed into a semicircular shaft shape, the second semicircular surface 620 is provided with a second convex thread 622, the second thread 622 can be matched with a spiral groove 462 of the gear shaft 46 on the planetary gear system 4 to realize spiral transmission between the second telescopic rod 62 and the dumbbell main body 10, the second diameter surface 621 is provided with a second sliding groove 624 which is arranged along the length direction of the second telescopic rod 62, the second sliding groove 624 is provided with a second tail end 6241, the second diameter surface 621 is provided with a second convex sliding block 625 which is matched with the second sliding groove 624 in shape, one end of the second telescopic rod 62 which points to the outer side of the dumbbell main body 10 is provided with a second hooking part 623 which extends into a semicircular shape along the radial direction of the second telescopic rod 62, the second hooking part 623 supplements one end of the second telescopic rod 62 which points to the outer side of the dumbbell main body 10 into a circular shape matched with a central hole of a dumbbell sheet to improve the overall aesthetic property of the telescopic rod, as shown in fig. 5, the second hooking part 623 is exposed from the dumbbell body 10, and when the second telescopic rod 62 is retracted into the dumbbell body 10, the second hooking part 623 can hook on the end face of the dumbbell body 10, thereby restricting the second telescopic rod 62 from being retracted into the dumbbell body 10 and preventing the dumbbell pieces from falling off the second telescopic rod 6. The first telescopic rod 61 and the second telescopic rod 62 have similar structures, and have the same structures of the first semicircular surface, the first diameter surface, the first sliding groove, the first end, the first sliding block and the first hooking part as the second semicircular surface 620, the second diameter surface 621, the second sliding groove 624, the second end 6241, the second sliding block 625 and the second hooking part 623, and the first telescopic rod 61 and the second telescopic rod 62 are only different in that the screw threads (such as the second screw thread 622) on the first telescopic rod 61 and the second telescopic rod 62 are opposite in rotation direction, so that when the holding rod 1 rotates, the first telescopic rod 61 and the second telescopic rod 62 can extend or retract in different directions.
When the first telescopic rod 61 and the second telescopic rod 62 are assembled, the first diameter surface and the second diameter surface 621 are approximately oppositely attached, the second sliding block 625 is inserted into the first sliding groove, the first sliding block is inserted into the second sliding groove 624, so that the first telescopic rod 61 and the second telescopic rod 62 are connected in a sliding manner, the movement of the first telescopic rod 61 and the second telescopic rod 62 is further limited by the guiding effect of the sliding grooves, and the stability of movement and assembly of the first telescopic rod 61 and the second telescopic rod 62 is improved. When the first telescopic rod 61 and the second telescopic rod 62 extend away from each other, the second end 6241 of the second sliding groove 624 and the first end of the first sliding groove respectively form a limiting stop for the first sliding block and the second sliding block 625, so that the first telescopic rod 61 and the second telescopic rod 62 are limited in the extending direction, and the first telescopic rod 61 and the second telescopic rod 62 are prevented from being separated from each other to cause potential safety hazards. The first sliding slot and the second sliding slot 624 are further used for forming a circumferential limit for the first telescopic rod 61 and the second telescopic rod 62, as shown in fig. 10 and 5, a dumbbell sheet mounting plate 5 for fixedly mounting dumbbell sheets is arranged at both ends of the dumbbell body 10, a telescopic rod exposing hole 51 is arranged on the dumbbell sheet mounting plate 5, the first telescopic rod 61 or the second telescopic rod 62 can extend out of the dumbbell body 10, the telescopic rod exposing hole 51 is a semi-circular shape matching the shape of the first telescopic rod 61 or the second telescopic rod 62, a limit block 52 matching the shape of the first sliding slot and the second sliding slot 624 is fixedly arranged in the telescopic rod exposing hole 51, the limit block 52 is matched in the first sliding slot or the second sliding slot 624 to form a circumferential limit for the first telescopic rod 61 and the second telescopic rod 62, so that the first telescopic rod 61 and the second telescopic rod 62 form a circumferential limit and can extend and retract along the axial direction thereof in a linear motion (if the first telescopic rod 61 and the second telescopic rod 62 are not circumferentially limited, the first and second telescopic bars 61 and 62 are extended and contracted in a spiral motion, which is not desirable).
The first extension rod 61 and the second extension rod 62 have first ends (such as the first end 626 of the second extension rod 62 in fig. 8) with diameters enlarged toward the outer side of the dumbbell body 10, and the first ends are arranged with diameters enlarged such that the first ends can be stopped by the hole ends of the inner holes of the dumbbell body 10 when the first ends are retracted into the inner holes of the dumbbell body 10, specifically, the first ends are stopped by the hole ends of the axial holes of the gear shaft 46 in the embodiment.
As shown in fig. 11, in the present embodiment, it is preferable that the connecting line of the centers of the dovetail groove and the dovetail block symmetrically arranged at 180 ° on each end surface of the dumbbell piece is in the plane where the first diameter surface or the second diameter surface 621 is located, because the dovetail groove and the dovetail block are arranged, the movement of the dumbbell piece in the circumferential direction and the axial direction is limited by the fit of the dovetail groove and the dovetail block, and the dumbbell piece can only be separated from each other in the direction of the connecting line of the centers of the dovetail groove and the dovetail block, so that the connecting line of the centers of the dovetail groove and the dovetail block is arranged in the plane where the first diameter surface or the second diameter surface 621 is located, and it can be ensured that the first telescopic rod 61 and the second telescopic rod 62 can most stably support the dumbbell piece, and the dumbbell piece cannot fall off during the use of the dumbbell.
Referring to fig. 12-17, the specific operating principles of the flange transmission 2 and the planetary gear system 4 of this embodiment are as follows. The holding rod 1 is tubular, and it has a centre bore and supplies telescopic link subassembly 6 to wear to stretch, and the surface of holding rod 1 has concave convex lines to increase the frictional force that the user gripped, and holding rod 1 and flange driving medium 2 are fixed assembly together, and flange driving medium 2 is roughly funnel-shaped that has centre bore 201, including outer shell 21, still include and form in this outer shell 21 enclose close inside screw hole 25, first bolt 26 that forms, and first bolt 26 is protruding to stretch along flange driving medium 2's axial. The outer shell 21 is in a contracted cone shape and comprises a small-caliber end facing the holding rod 1 and a large-caliber end facing the planetary gear system 4, wherein the small-caliber end is fixedly assembled with the holding rod 1, and the outer diameter of the large-caliber end is approximately equal to that of the outer shell 41 of the planetary gear system 4, so that the large-caliber end is in butt joint with the outer shell 41 of the planetary gear system 4 to approximately seal the planetary gear and prevent dust from entering the planetary gear.
The planetary gear system 4 includes an outer housing 41, an inner ring gear 42 provided inside the outer housing 41, a bearing iron ring 43, a planetary gear 44, a planetary carrier 45, and a gear set 46 as a sun gear. The gear shaft 46 comprises an integrated shaft and a first gear 461, the gear shaft 46 has a hollow shaft hole, an inner wall of the shaft hole is provided with an inward concave spiral groove 462, and the spiral groove 462 is used for matching with an external thread on the first telescopic rod 61 or the second telescopic rod 62, so that the gear shaft 46 drives the first telescopic rod 61 and the second telescopic rod 62 to extend or retract when rotating. The planet carrier 45 is a revolving body with a cross section approximately in a shape of "T", the planet gears 44 are rotatably sleeved on the planet carrier 45, a planet carrier mounting hole 414 is formed on the outer casing 41, the planet carrier 45 is inserted and fixed on the planet carrier mounting hole 414, and therefore the planet gears 44 are mounted on the outer casing 41 through the planet carrier 45. In this embodiment, five planetary gears 44 are circumferentially arranged, and in other embodiments, other suitable numbers of planetary gears may be selected according to the load applied to the planetary gears. The ring gear 42 is engaged with the planetary gears 44, the outer housing 41 has a central hole 412 for fitting with the gear shaft 46, one end of the gear shaft 46 is inserted into the central hole 412, and the first gear 461 on the gear shaft 46 is engaged with the planetary gears 44, so that the ring gear 42, the planetary gears 44, the planet carrier 45 and the first gear 461 form a planetary gear mechanism, the first gear 461 serves as a sun gear, and when the ring gear 42 is actively rotated, the first gear 461 is passively rotated, and the planetary gears form an upshift transmission relationship.
The bearing iron ring 43 is assembled and fixed with the ring gear 42, wherein the end surface of the ring gear 42 is provided with a convex column 421 which protrudes along the axial direction of the ring gear, the bearing iron ring 43 is provided with an insertion hole 431 corresponding to the convex column 421, and the convex column 421 is inserted into the insertion hole 431 to realize the matching of the bearing iron ring 43 and the ring gear 42. The bearing iron ring 43 is further fixedly assembled with the flange transmission member 2, wherein the inner gear ring 42 and the bearing iron ring 43 are respectively provided with a first slot 423 and a second slot 433 at corresponding positions for the first bolt 26 to be inserted and matched, the bearing iron ring 43 is provided with a through hole 432, the position of the through hole 432 corresponds to the screw hole 25 of the flange transmission member 2, when the flange transmission member 2 is jointed with the planetary gear system 4, the first bolt 26 is aligned to be inserted into the first slot 423 (the second slot 433) to complete positioning, and then a screw passes through the through hole 432 to be locked in the screw hole 25, so that the bearing iron ring 43, the inner gear ring 42 and the flange transmission member 2 are connected into a whole. In order to facilitate the installation and locking of the screws, a groove 422 for giving way for the screws is further formed on the outer ring of the inner gear ring 42, and screw insertion holes 415 are formed on the outer shell 41. Through the assembly relation that bearing iron ring 43, ring gear 42 and flange driving medium 2 link as an organic whole for when rotating flange driving medium 2, can rotate ring gear 42, and because flange driving medium 2 and holding rod 1 fixed assembly, when consequently rotating holding rod 1, can rotate ring gear 42, and then through the transmission of planetary gear mechanism, make gear shaft 46 rotate, gear shaft 46 rethread spiral groove 462 in its axle hole and the external screw thread fit on first telescopic link 61 or the second telescopic link 62, drive first telescopic link 61 and second telescopic link 62 and stretch or contract.
The outer side of the outer shell 41 is fixedly connected with the dumbbell sheet 20 through the dumbbell sheet mounting plate 5 in a threaded manner, so that the outer shell 41 can be kept still when the grip 1 is rotated by using the gravity of the dumbbell sheet.
When this embodiment utilizes holding rod 1 to rotate, rotate in step with holding rod 1 fixed assembly's flange driving medium 2, flange driving medium 2 drive planetary gear system 4 for gear shaft 46 rotates, through planetary gear's transmission, realizes holding rod 1 and rotates less angle, and gear shaft 46 just can rotate great angle, thereby controls telescopic link assembly 6's flexible high-efficiently, accurately.
In the embodiment, the first telescopic rod 61 and the second telescopic rod 62 in the shape of two semicircular shafts are arranged, so that the extension range of the telescopic rod assembly is expanded under the limit of the limited length of the dumbbell body 10, and more dumbbell pieces can be mounted.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides an adjustable dumbbell, includes dumbbell main body and the dumbbell piece of accumulatively attaching at dumbbell main body both ends, dumbbell main body includes the holding rod and sets up the installation department that is used for connecting the dumbbell piece at the holding rod both ends, still includes first telescopic link and second telescopic link, and first telescopic link and second telescopic link are worn inside dumbbell main body, through first telescopic link of dumbbell main body drive and second telescopic link liftoff back on the back stretch out or retract dumbbell main body is with hanging up the dumbbell piece to adjust the quantity of the dumbbell piece at dumbbell main body both ends, its characterized in that:
the first telescopic rod and the second telescopic rod are approximately in a semi-circular shaft shape, the first telescopic rod comprises a first semi-circular surface and a first diameter surface which are enclosed to be in a semi-circular shaft shape, a first sliding groove which is arranged along the length direction of the first telescopic rod is arranged on the first diameter surface, the second telescopic rod comprises a second semi-circular surface and a second diameter surface which are enclosed to be in a semi-circular shaft shape, a second sliding groove which is arranged along the length direction of the second telescopic rod is arranged on the second diameter surface,
the dumbbell comprises a dumbbell body, a first sliding groove and a second sliding groove are formed in the dumbbell body, the first sliding groove is formed in the dumbbell body, the second sliding groove is formed in the dumbbell body, the first diameter surface is located on the plane, the second diameter surface is located on the plane, the first telescopic rod and the second telescopic rod are arranged in the dumbbell body in a staggered mode, a first limiting block and a second limiting block which are matched with the first sliding groove and the second sliding groove respectively are fixedly arranged on the dumbbell body, and the first limiting block and the second limiting block are in sliding fit with the first sliding groove and the second sliding groove respectively so as to.
2. The adjustable dumbbell of claim 1, wherein: the dumbbell comprises a dumbbell body and is characterized in that a first exposure hole and a second exposure hole are formed in two ends of the dumbbell body, the first exposure hole and the second exposure hole are used for exposing the first telescopic rod and the second telescopic rod, the first exposure hole and the second exposure hole are respectively in a semicircular shape matched with the appearance of the first telescopic rod and the appearance of the second telescopic rod, and a first limiting block and a second limiting block are respectively fixedly arranged in the first exposure hole and the second exposure hole.
3. The adjustable dumbbell of claim 1, wherein: first telescopic link is still including setting up the first slider on first diameter face, the second telescopic link is still including setting up the second slider on the second diameter face, and first slider sliding connection is in the second spout, and second slider sliding connection is in first spout simultaneously, thereby first telescopic link and second telescopic link sliding connection.
4. The adjustable dumbbell of claim 3, wherein: the first sliding groove is provided with a first tail end, the second sliding groove is provided with a second tail end, and when the first telescopic rod and the second telescopic rod extend out in a back-to-back mode, the first sliding block and the second sliding block can abut against the second tail end and the first tail end respectively, so that the first telescopic rod and the second telescopic rod are limited to be separated from each other.
5. The adjustable dumbbell of claim 1, wherein: one ends, pointing to the outer side of the dumbbell main body, of the first telescopic rod and the second telescopic rod are provided with hook stopping portions extending in the radial direction, and when the first telescopic rod and the second telescopic rod retract, the hook stopping portions can be hooked on end faces at two ends of the dumbbell main body, so that the first telescopic rod and the second telescopic rod are limited to retract into the dumbbell main body.
6. The adjustable dumbbell of claim 5, wherein: the hooking part complements the ends of the first telescopic rod and the second telescopic rod, which point to the outer side of the dumbbell main body, into a circular shape.
7. The adjustable dumbbell of claim 1, wherein: the first telescopic rod and the second telescopic rod are connected with the dumbbell main body through screw pairs with opposite rotation directions, so that the dumbbell main body is rotated to drive the first telescopic rod and the second telescopic rod to extend out of or retract into the dumbbell main body in a back-to-back mode.
8. The adjustable dumbbell of claim 7, wherein: the dumbbell is characterized in that a first thread and a second thread with opposite rotation directions are convexly arranged on the first semicircular surface and the second semicircular surface respectively, and the dumbbell main body is provided with a first spiral groove and a second spiral groove which are in matched connection with the first thread and the second thread respectively.
9. The adjustable dumbbell of claim 1, wherein: one ends of the first telescopic rod and the second telescopic rod, which point to the outer side of the dumbbell main body, are provided with expanding parts with expanded diameters.
10. The adjustable dumbbell of claim 1, wherein: the dumbbell pieces are characterized in that the two side end faces of the dumbbell pieces are provided with clamping blocks and clamping grooves which are symmetrically arranged at 180 degrees, adjacent dumbbell pieces can be accumulatively stacked at the two ends of the dumbbell main body through clamping matching of the clamping blocks and the clamping grooves, and a connecting line of centers of the clamping blocks and the clamping grooves which are symmetrically arranged at 180 degrees in each group is in a plane where the first diameter surface or the second diameter surface is located.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011509895.3A CN113144513A (en) | 2020-12-18 | 2020-12-18 | Adjustable dumbbell |
| US17/345,165 US20220193479A1 (en) | 2020-12-18 | 2021-06-11 | Adjustable dumbbell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011509895.3A CN113144513A (en) | 2020-12-18 | 2020-12-18 | Adjustable dumbbell |
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| Publication Number | Publication Date |
|---|---|
| CN113144513A true CN113144513A (en) | 2021-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011509895.3A Pending CN113144513A (en) | 2020-12-18 | 2020-12-18 | Adjustable dumbbell |
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| Country | Link |
|---|---|
| US (1) | US20220193479A1 (en) |
| CN (1) | CN113144513A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225307A (en) * | 2022-01-20 | 2022-03-25 | 南通乐爱康健康科技有限责任公司 | Quick-adjusting body-building dumbbell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD998729S1 (en) * | 2021-10-22 | 2023-09-12 | Hebei Juchu Sports Goods Co., Ltd. | Dumbbell |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7413533B2 (en) * | 2006-02-08 | 2008-08-19 | Asai Regent Limited | Adjustable dumbbell |
| US9504868B2 (en) * | 2011-06-01 | 2016-11-29 | Ping Liu | Dumbbell glide apparatus with weight adjusting key |
| US8784283B2 (en) * | 2012-06-05 | 2014-07-22 | Personality Gym Ab | Weight apparatus including weight adjustment arrangement |
| US11179594B2 (en) * | 2019-11-14 | 2021-11-23 | Floriey Industries International Co. | Adjustable dumbbell |
| JP7166661B2 (en) * | 2020-05-28 | 2022-11-08 | パーソナリティー・ジム・アーベー | adjustable weight lifting device |
| CN112190872B (en) * | 2020-09-14 | 2021-09-07 | 山东亿迈健康产业集团有限公司 | Adjustable dumbbell and using method thereof |
| EP4129422A1 (en) * | 2021-08-02 | 2023-02-08 | Jiangxi EQI Industrial Co.Ltd | Weight adjustable dumbbell |
| CN114028764A (en) * | 2021-11-02 | 2022-02-11 | 王美媛 | Dumbbell set |
-
2020
- 2020-12-18 CN CN202011509895.3A patent/CN113144513A/en active Pending
-
2021
- 2021-06-11 US US17/345,165 patent/US20220193479A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114225307A (en) * | 2022-01-20 | 2022-03-25 | 南通乐爱康健康科技有限责任公司 | Quick-adjusting body-building dumbbell |
Also Published As
| Publication number | Publication date |
|---|---|
| US20220193479A1 (en) | 2022-06-23 |
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