CN114931721A - Weight-adjustable dumbbell - Google Patents
Weight-adjustable dumbbell Download PDFInfo
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- CN114931721A CN114931721A CN202210715275.8A CN202210715275A CN114931721A CN 114931721 A CN114931721 A CN 114931721A CN 202210715275 A CN202210715275 A CN 202210715275A CN 114931721 A CN114931721 A CN 114931721A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 40
- 230000002457 bidirectional effect Effects 0.000 claims description 11
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 2
- 230000004913 activation Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 210000003205 muscle Anatomy 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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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
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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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- Support Devices For Sliding Doors (AREA)
- Invalid Beds And Related Equipment (AREA)
Abstract
A weight-adjustable dumbbell comprises a base, wherein a vertical plate is fixed on the base, a horizontal sliding rail is fixed on the vertical plate, a weight adjusting frame is arranged on the horizontal sliding rail in a sliding mode, and a dumbbell component is placed on the weight adjusting frame; a first sliding groove is arranged on the horizontal sliding rail, and a convex block is arranged in the first sliding groove; be equipped with the runner No. one on horizontal slide rail, a runner connects gradually a transmission shaft, No. two transmission shafts, No. two runners, a plurality of gear drive, telescopic cylinder and two side racks, and then is connected with the centre gripping shell, and the centre gripping shell realizes being close to, keeping away from under the telescopic cylinder effect that two vertical directions set up, dismantles and installs the counter weight. The invention realizes the arbitrary automatic adjustment of a plurality of balance weights; the fixed buckle and the connected related mechanism increase the stability of the counterweight during disassembly.
Description
Technical Field
The invention belongs to the field of fitness equipment, and particularly relates to a weight-adjustable dumbbell.
Background
Dumbbells are a simple device used for strengthening muscle strength training. The muscle training device is used for muscle strength training and muscle compound action training. The dumbbell can be held by hands for patients with low muscle strength caused by paralysis, pain, long-term inactivity and the like, and the weight of the dumbbell can be used for performing resistance active exercise and training the muscle strength. Dumbbells can train a single muscle; if the weight is increased, the coordination of a plurality of muscles is needed, and the training can also be used as a muscle compound action training. Dumbbells typically have both a fixed weight and an adjustable weight. Firstly, a dumbbell with fixed weight is cast by pig iron, the middle of the dumbbell is provided with an iron bar, and two ends of the dumbbell are provided with solid balls for exercise. Secondly, the dumbbell can be adjusted, similar to a reduced barbell, and round iron sheets with different weights are sleeved at two ends of a short iron rod, and the length of the short iron rod is about 40-45 cm. The dumbbell with fixed weight can not adjust the weight, and when training is carried out, dumbbells with multiple weights are usually required to be prepared, which is very inconvenient; adjustable dumbbell, though can adjust weight, but usually for artifical the dismantlement when using, it is comparatively time-consuming, take place the accident that the dumbbell piece dropped easily at the dismantlement in-process to current adjustable dumbbell is after using a period, because rotation friction each other between the dumbbell piece, can make fastening nut not hard up, though can use the fixer to fix, but the position of dumbbell piece can be taken up to the fixer, causes the unable dumbbell that adds of dumbbell piece and can not reach anticipated weight.
Patent CN108721831A discloses a dumbbell weight adjusting device, and the technical scheme that the device adopted is: the dumbbell comprises a dumbbell body and dumbbell supporting devices, wherein a dumbbell rod is arranged in the dumbbell body, first dumbbell pieces are arranged at two ends of the dumbbell rod, a second dumbbell piece is tightly attached to the outer side surface of each first dumbbell piece, a third dumbbell piece is tightly attached to the outer side surface of each second dumbbell piece, and a fourth dumbbell piece is tightly attached to the outer side surface of each third dumbbell piece; the dumbbell supporting device is provided with a supporting frame, a dumbbell sheet supporting block and an adjusting plate, and the position of the dumbbell sheet supporting block can be adjusted through the action of the adjusting plate. Although the device is convenient for adjust the weight of dumbbell, at the in-process of adjusting, when having selected improper weight, can't in time adjust to there is not protection device when adjusting, prevents that the dumbbell drops or is taken up by the people at the in-process of adjusting, causes the dumbbell piece to drop.
Disclosure of Invention
The invention aims to provide a weight-adjustable dumbbell, which realizes the arbitrary automatic adjustment of a plurality of balance weights; the fixed buckle and the connected related mechanism increase the stability of the counterweight during disassembly.
The technical scheme adopted by the invention is as follows:
a weight-adjustable dumbbell comprises a base, wherein a vertical plate is fixed on the base, a horizontal sliding rail is fixed on the vertical plate, a weight adjusting frame is arranged on the horizontal sliding rail in a sliding mode, and a dumbbell component is placed on the weight adjusting frame;
a first sliding groove is arranged on the horizontal sliding rail, and a plurality of protruding blocks are arranged in the first sliding groove; a plurality of pairs of first rotating wheels are arranged on the horizontal sliding rail at positions corresponding to the protruding blocks, rotating shafts of the first rotating wheels penetrate through the horizontal sliding rail downwards, a first transmission shaft is arranged between the base and the bottom surface of the horizontal sliding rail, and the first transmission shaft is connected with adjacent rotating shafts and two adjacent rotating shafts through a first belt;
the bottom surface of the weight adjusting frame is provided with a first telescopic cylinder, the position of the first telescopic cylinder corresponds to the first sliding groove, two connecting rods are fixed on a telescopic rod of the first telescopic cylinder, two ends of the two connecting rods are provided with a second transmission shaft in a penetrating manner, the bottom end of the second transmission shaft is fixed with a second rotating wheel of which the structure is matched with the first rotating wheel, the second transmission shaft upwards penetrates through the bottom surface of the weight adjusting frame, and the top end of the second transmission shaft is provided with a right-angle transmission part;
two vertical second sliding grooves are formed in the weight adjusting frame, a push-pull rod is arranged between the two second sliding grooves in a sliding mode, and a first rack and a first spring are arranged in the second sliding grooves and above and below the push-pull rod respectively; the weight adjusting frame is also respectively provided with a first gear, a second gear and a third gear, the first gear is meshed with the first rack, the first gear is connected with the second gear through a second belt, the second gear is meshed with the third gear, and a rotating shaft of the third gear is connected with a second transmission shaft through a right-angle transmission part;
a second telescopic cylinder and bilateral racks are fixed on the bottom surface of the weight adjusting frame, a first supporting plate is fixed at each end of the second telescopic cylinder, a bidirectional screw rod is arranged on the first supporting plate, a clamping shell (the clamping shell is divided into an upper part and a lower part) is arranged on the first supporting plate in a sliding mode, and the clamping shell is simultaneously in threaded connection with the bidirectional screw rod; two third sliding grooves are formed in the base, sliding blocks are arranged in the third sliding grooves in a sliding mode, and a second spring is arranged between each sliding block and the side wall of each third sliding groove; the sliding block, the bidirectional screw rod and the first transmission shaft are connected through a third belt; a third telescopic cylinder is fixedly arranged on each of the first support plates, a fourth sliding groove matched with the third telescopic cylinder in size is arranged on the vertical plate, a limiting rod is vertically fixed on each third telescopic cylinder, a second rack is fixed at the lower end of each limiting rod, two fourth gears are further arranged on the vertical plate, and the two fourth gears are respectively meshed with the two second racks; the racks on the two sides penetrate through the vertical plate and are meshed and connected with the two gears of the fourth gear at the same time.
Furthermore, the first sliding groove is divided into two channels along the center, the protruding block is positioned in one of the channels, one-way baffles are arranged at the intersection of the two ends of the two channels, two connecting grooves are arranged in the middle of the two channels, and one-way baffles are arranged at the inlet and the outlet of each connecting groove.
When the weight adjusting frame slides towards the direction of the vertical plate on the horizontal sliding rail, the weight adjusting frame moves forwards from the channel provided with the convex block, and returns from the other channel after reaching the foremost end, and if the weight adjusting frame finds that the weight adjusting frame is not suitable, the weight adjusting frame does not completely return to the starting point of the channel, but returns to the channel provided with the convex block along the connecting groove.
Furthermore, the dumbbell component comprises a grab handle with a cavity, a main connecting rod is arranged in the cavity of the grab handle in a sliding mode, one end of the main connecting rod is connected with the wall of the cavity through a third spring, the other end of the main connecting rod is connected with a trigger head through an end connecting rod, a plurality of secondary connecting rods are arranged on the main connecting rod, the end portions of the secondary connecting rods upwards penetrate through the wall of the cavity, and a slotted hole matched with the end portions of the secondary connecting rods is formed in a balance weight of the dumbbell component; an electric cylinder is fixed on the weight adjusting frame and is positioned under the dumbbell component.
In order to prevent the balance weight of the dumbbell component from falling off, a connecting rod and electric cylinder combination is designed, and the balance weight is taken down and installed. The electric cylinder jacks up the trigger head upwards, so that the end connecting rod inclines to a larger angle, the main connecting rod moves towards one side far away from the third spring, the end part of the secondary connecting rod is pulled out from the slotted hole of the balance weight, and the balance weight is separated from the grab handle.
Furthermore, a second support plate is fixed on the weight adjusting frame, a one-way lead screw is arranged on the second support plate, a fixing buckle is connected to the one-way lead screw in a threaded manner, a sliding rod is fixed at the lower end of the fixing buckle, and the sliding rod is connected with the second support plate in a sliding manner; the unidirectional screw rod penetrates through the bottom surface of the weight adjusting frame downwards, a fifth gear is fixed at the lower end of the unidirectional screw rod, a third rack is arranged on the horizontal sliding rail, and the third rack is meshed with the fifth gear.
In order to stabilize the counterweight in the disassembly process, the grab handle is fastened through the fixing buckle. When the weight adjusting frame slides on the horizontal sliding rail towards the vertical plate, the third rack enables the fifth gear to rotate, the one-way lead screw is driven to rotate, and the fixing buckle is driven to move downwards along the second supporting plate and is buckled on the grab handle.
Furthermore, two pairs of rollers are arranged on the weight adjusting frame, the two pairs of rollers are in friction sliding contact with the dumbbell component, each pair of rollers are connected through a fourth belt, and one of the rollers is connected with a motor.
When placing the dumbbell subassembly, probably trigger the head and can't just in time be in directly over the electricity jar at every turn, drive two pairs of gyro wheels through motor, No. four belts and rotate, drive the dumbbell subassembly and rotate, make trigger the head and adjust directly over the electricity jar.
The invention has the beneficial effects that:
the weight adjusting frame is arranged on the horizontal sliding rail in a sliding mode, the weight adjusting frame is matched with the protruding block, the first rotating wheel and the second rotating wheel to perform transmission, and the plurality of telescopic cylinders, the bilateral racks, the bidirectional screw rod and the clamping shell are utilized to realize random automatic adjustment of the plurality of balance weights; the fixed buckle and the connected related mechanism increase the stability of the counterweight during disassembly.
Drawings
FIG. 1 is a schematic view of the overall front structure of the present invention;
FIG. 2 is a schematic view of the overall backside structure of the present invention;
FIG. 3 is a schematic view of the back side of the present invention with the riser removed;
FIG. 4 is an enlarged view at C of FIG. 3;
FIG. 5 is a schematic view of the front bottom view of the present invention with the base removed;
FIG. 6 is an enlarged view at A in FIG. 5;
FIG. 7 is a cross-sectional view perpendicular to the handle of the dumbbell assembly of the present invention;
FIG. 8 is an enlarged view at D of FIG. 7;
FIG. 9 is a cross-sectional view of the invention taken parallel to the riser;
FIG. 10 is an enlarged view at B of FIG. 9;
FIG. 11 is an enlarged view at E of FIG. 9;
FIG. 12 is a schematic view showing the connection of the roller and the fixing buckle;
FIG. 13 is a schematic view of a base, a vertical plate, and a horizontal slide rail;
FIG. 14 is an enlarged view at F of FIG. 13;
in the figure, 1, a base, 2, a vertical plate, 3, a horizontal sliding rail, 301, a first sliding groove, 3011, a one-way baffle, 3012, a connecting groove, 302, a convex block, 303, a first rotating wheel, 304, a first transmission shaft, 305, a first belt, 4, a weight adjusting frame, 401, a first telescopic cylinder, 402, two connecting rods, 403, a second transmission shaft, 404, a second rotating wheel, 405, a right-angle transmission piece, 406, a second sliding groove, 407, a push-pull rod, 408, a first rack, 409, a first spring, 410, a first gear, 411, a second gear, 412, a third gear, 413, a second belt, 414, a second telescopic cylinder, 415, a double-side rack, 416, a first supporting plate, 417, a two-way lead screw, 418, a clamping shell, 419, a third sliding groove, 420, a sliding block, 421, a second spring, 422, a third belt, 423, a third telescopic cylinder, 424, a fourth sliding groove, 425, a limiting rod, 426, a second rack, 427. no. four gears, 428, No. two supporting plates, 429, a one-way screw rod, 430, a fixing buckle, 431, a sliding rod, 432, No. five gears, 433, No. three racks, 434, a roller, 435, a No. four belt, 436, a motor, 5, a dumbbell component, 501, a grab handle, 502, a main connecting rod, 503, a No. three spring, 504, an end connecting rod, 505, a trigger head, 506, a secondary connecting rod, 507, a counterweight, 508 and an electric cylinder.
Detailed Description
As shown in fig. 1 to 14, a weight-adjustable dumbbell comprises a base 1, wherein a vertical plate 2 is fixed on the base 1, a horizontal slide rail 3 is fixed on the vertical plate 2, a weight adjusting frame 4 is slidably arranged on the horizontal slide rail 3, and a dumbbell component 5 is placed on the weight adjusting frame 4; a first sliding groove 301 is arranged on the horizontal sliding rail 3, and a plurality of protruding blocks 302 are arranged in the first sliding groove 301; a plurality of pairs of first rotating wheels 303 are arranged on the horizontal sliding rail 3 corresponding to the convex blocks 302, rotating shafts of the first rotating wheels 303 downwards penetrate through the horizontal sliding rail 3, a first transmission shaft 304 is arranged between the base 1 and the bottom surface of the horizontal sliding rail 3, and the first transmission shaft 304 is connected with adjacent rotating shafts and two adjacent rotating shafts through a first belt 305; a first telescopic cylinder 401 is arranged on the bottom surface of the weight adjusting frame 4, the first telescopic cylinder 401 is located at a position corresponding to the first sliding chute 301, two connecting rods 402 are fixed on a telescopic rod of the first telescopic cylinder 401, two ends of the two connecting rods 402 are provided with second transmission shafts 403 in a penetrating manner, the bottom ends of the second transmission shafts 403 are fixed with second rotating wheels 404 of which the structures are matched with the first rotating wheels 303, the second transmission shafts 403 upwards penetrate through the bottom surface of the weight adjusting frame 4, and right-angle transmission pieces 405 are arranged at the top ends of the second transmission shafts 403; two vertical second chutes 406 are arranged on the weight adjusting frame 4, a push-pull rod 407 is arranged between the two second chutes 406 in a sliding manner, and a first rack 408 and a first spring 409 are respectively arranged in the second chute 406 and above and below the push-pull rod 407; a first gear 410, a second gear 411 and a third gear 412 are respectively arranged on the weight adjusting frame 4, the first gear 410 is meshed with the first rack 408, the first gear 410 is connected with the second gear 411 through a second belt 413, the second gear 411 is meshed with the third gear 412, and a rotating shaft of the third gear 412 is connected with a second transmission shaft 403 through a right-angle transmission piece 405; a second telescopic cylinder 414 and a bilateral rack 415 are fixed on the bottom surface of the weight adjusting frame 4, a first supporting plate 416 is respectively fixed at two ends of the second telescopic cylinder 414, a bidirectional screw 417 is arranged on the first supporting plate 416, meanwhile, a clamping shell 418 is slidably arranged on the first supporting plate 416 (the clamping shell 418 is divided into an upper part and a lower part), and the clamping shell 418 is simultaneously in threaded connection with the bidirectional screw 417; two third sliding grooves 419 are formed in the base 1, sliding blocks 420 are arranged in the third sliding grooves 419 in a sliding mode, and second springs 421 are arranged between the sliding blocks 420 and the side walls of the third sliding grooves 419; the sliding block 420, the bidirectional screw rod 417 and the first transmission shaft 304 are connected through a third belt 422; a third telescopic cylinder 423 is fixedly arranged on each of the two first supporting plates 416, a fourth sliding groove 424 matched with the third telescopic cylinder 423 in size is arranged on the vertical plate 2, a limiting rod 425 is vertically fixed on each third telescopic cylinder 423, a second rack 426 is fixed at the lower end of each limiting rod 425, two fourth gears 427 are further arranged on the vertical plate 2, and the two fourth gears 427 are respectively meshed with the two second racks 426; the double-sided rack 415 penetrates through the vertical plate 2 and is simultaneously meshed and connected with two fourth gears 427.
The counterweight adjusting process comprises the following steps: the weights are all mounted to the dumbbell assembly 5 and placed on the weight-adjusting rack 4, after which: the first step is as follows: two clamping shells 418 approach the outside of dumbbell assembly 5.
Promote weight adjusting bracket 4 and slide on horizontal slide rail 3, two side racks 415 move to riser 2 one side, drive No. four gears 427 and rotate, and then drive the motion of No. two racks 426, drive No. three flexible section of thick bamboo 423 through gag lever post 425 and be close to for two centre gripping shells 418 move on dumbbell subassembly 5.
The second step: the two clamp shells 418 each clamp the weight to be removed.
In the movement process of the weight adjusting frame 4, when the telescopic rod of the first telescopic cylinder 401 touches the first convex block 302 (four convex blocks 302 are shown in the application, corresponding to four pairs of first rotating wheels 303 and also corresponding to four balance weights of the dumbbell assembly 5, namely when the first telescopic cylinder 401 touches the first convex block 302, two clamping shells 418 can be taken down or the outermost balance weight can be installed), the telescopic rod is contracted, one section of the outer side of the two sections of connecting rods 402 rotates downwards to drive the second rotating wheel 404 to downwards engage with the first pair of first rotating wheels 303; then, the push-pull rod 407 is pushed downwards, the first rack 408 is driven to slide downwards along the second sliding groove 406 while the first spring 409 is compressed, the first gear 410 is driven to rotate by meshing, the second transmission shaft 403 is driven to rotate by the second gear 411, the third gear 412 and the right-angle transmission piece 405 in sequence, the first rotating wheel 303 is driven to rotate by the second rotating wheel 404, the first rotating wheel 303 drives the first transmission shaft 304 to rotate by the first belt 305, the first transmission shaft 304 drives the bidirectional screw 417 to rotate by the third belt 422 (the effect of the second spring 421 is to tighten the third belt 422 all the time), so that the upper part and the lower part of the clamping shell 418 are close to each other and the balance weight is detached, and then the balance weight is left in the clamping shell 418.
The first chute 301 is divided into two channels along the center, the protruding block 302 is located in one of the channels, one-way baffles 3011 are arranged at the intersection of the two ends of the two channels, two connecting grooves 3012 are arranged between the two channels, and one-way baffles 3011 are arranged at the inlet and the outlet of the connecting grooves 3012.
When the weight adjusting frame 4 slides on the horizontal sliding rail 3 towards the vertical plate 2, the weight adjusting frame moves forwards from the channel provided with the convex block 302, reaches the forefront end, and returns from the other channel, if the weight adjusting frame finds that the weight adjusting frame is not suitable, the weight adjusting frame can return to the channel provided with the convex block 302 along the connecting groove 3012 instead of completely returning to the starting point of the channel.
The dumbbell component 5 comprises a handle 501 with a cavity, a main connecting rod 502 is arranged in the cavity of the handle 501 in a sliding mode, one end of the main connecting rod 502 is connected with the wall of the cavity through a third spring 503, the other end of the main connecting rod is connected with a trigger head 505 through an end connecting rod 504, a plurality of secondary connecting rods 506 are arranged on the main connecting rod 502, the end portions of the secondary connecting rods 506 upwards penetrate through the wall of the cavity, and a slotted hole matched with the end portions of the secondary connecting rods 506 is formed in a counterweight 507 of the dumbbell component 5; an electric cylinder 508 is fixed to the weight adjusting bracket 4, and the electric cylinder 508 is located directly below the dumbbell assembly 5.
In order to prevent the weight 507 of the dumbbell assembly 5 from falling off, a connecting rod and an electric cylinder 508 are combined to realize the removal and installation of the weight. The electric cylinder 508 lifts the trigger head 505 upwards to incline the end link 504 to a larger angle, and then the main link 502 moves to the side far away from the third spring 503, and the end of the secondary link 506 is pulled out from the slotted hole of the counterweight 507, so that the counterweight 507 is separated from the grab handle 501.
A second supporting plate 428 is fixed on the weight adjusting frame 4, a one-way lead screw 429 is arranged on the second supporting plate 428, a fixing buckle 430 is connected to the one-way lead screw 429 in a threaded manner, a sliding rod 431 is fixed at the lower end of the fixing buckle 430, and the sliding rod 431 is connected with the second supporting plate 428 in a sliding manner; the unidirectional screw 429 penetrates through the bottom surface of the weight adjusting frame 4 downwards, a fifth gear 432 is fixed at the lower end of the unidirectional screw 429, a third rack 433 is arranged on the horizontal sliding rail 3, and the third rack 433 is meshed with the fifth gear 432.
To stabilize the weights during disassembly, the handle 501 is fastened by a retaining buckle 430. When the weight adjusting frame 4 slides on the horizontal sliding rail 3 toward the vertical plate 2, the third rack 433 rotates the fifth gear 432 to drive the one-way screw 429 to rotate, and drives the fixing buckle 430 to move down along the second supporting plate 428 and buckle on the handle 501.
Two pairs of rollers 434 are provided on the weight-adjusting frame 4, the two pairs of rollers 434 are in frictional sliding contact with the dumbbell assembly 5, each pair of rollers 434 is connected by a fourth belt 435, and one of the rollers is connected with a motor 436.
When the dumbbell assembly 5 is placed, the trigger head 505 may not be positioned right above the electric cylinder 508 at a time, and the motor 436 and the fourth belt 435 drive the two pairs of rollers 434 to rotate, so as to drive the dumbbell assembly 5 to rotate, so that the trigger head 505 is adjusted right above the electric cylinder 508.
Claims (5)
1. A weight-adjustable dumbbell is characterized by comprising a base (1), wherein a vertical plate (2) is fixed on the base (1), a horizontal sliding rail (3) is fixed on the vertical plate (2), a weight adjusting frame (4) is arranged on the horizontal sliding rail (3) in a sliding manner, and a dumbbell component (5) is placed on the weight adjusting frame (4);
a first sliding groove (301) is arranged on the horizontal sliding rail (3), and a plurality of protruding blocks (302) are arranged in the first sliding groove (301); a plurality of pairs of first rotating wheels (303) are arranged on the horizontal sliding rail (3) corresponding to the protruding blocks (302), rotating shafts of the first rotating wheels (303) downwards penetrate through the horizontal sliding rail (3), a first transmission shaft (304) is arranged between the base (1) and the bottom surface of the horizontal sliding rail (3), and the first transmission shaft (304) is connected with adjacent rotating shafts and two adjacent rotating shafts through a first belt (305);
a first telescopic cylinder (401) is arranged on the bottom surface of the weight adjusting frame (4), the first telescopic cylinder (401) is located corresponding to the first sliding groove (301), two connecting rods (402) are fixed on a telescopic rod of the first telescopic cylinder (401), two ends of each connecting rod (402) are provided with a second transmission shaft (403) in a penetrating manner, a second rotating wheel (404) with a structure matched with the first rotating wheel (303) is fixed at the bottom end of each second transmission shaft (403), each second transmission shaft (403) upwards penetrates through the bottom surface of the weight adjusting frame (4), and a right-angle transmission piece (405) is arranged at the top end of each second transmission shaft (403);
two vertical second sliding grooves (406) are arranged on the weight adjusting frame (4), a push-pull rod (407) is arranged between the two second sliding grooves (406) in a sliding manner, and a first rack (408) and a first spring (409) are respectively arranged in the second sliding groove (406) and above and below the push-pull rod (407); a first gear (410), a second gear (411) and a third gear (412) are respectively arranged on the weight adjusting frame (4), the first gear (410) is meshed with the first rack (408), the first gear (410) is connected with the second gear (411) through a second belt (413), the second gear (411) is meshed with the third gear (412), and a rotating shaft of the third gear (412) is connected with a second transmission shaft (403) through a right-angle transmission piece (405);
a second telescopic cylinder (414) and a bilateral rack (415) are fixed on the bottom surface of the weight adjusting frame (4), a first supporting plate (416) is respectively fixed at two ends of the second telescopic cylinder (414), a bidirectional screw rod (417) is arranged on the first supporting plate (416), meanwhile, a clamping shell (418) is slidably arranged on the first supporting plate (416), and the clamping shell (418) is simultaneously in threaded connection with the bidirectional screw rod (417); two third sliding grooves (419) are formed in the base (1), sliding blocks (420) are arranged in the third sliding grooves (419) in a sliding mode, and second springs (421) are arranged between the sliding blocks (420) and the side walls of the third sliding grooves (419); the sliding block (420), the bidirectional screw rod (417) and the first transmission shaft (304) are connected through a third belt (422); a third telescopic cylinder (423) is fixedly arranged on each of the two first supporting plates (416), a fourth sliding groove (424) matched with the third telescopic cylinder (423) in size is arranged on the vertical plate (2), a limiting rod (425) is vertically fixed on each third telescopic cylinder (423), a second rack (426) is fixed at the lower end of each limiting rod (425), two fourth gears (427) are further arranged on the vertical plate (2), and the two fourth gears (427) are respectively meshed with the two second racks (426); the double-side rack (415) penetrates through the vertical plate (2) and is simultaneously meshed and connected with two fourth gears (427).
2. The dumbbell with adjustable weight according to claim 1, wherein the first sliding groove (301) is divided into two channels along the center, the protrusion block (302) is arranged in one of the channels, one-way blocking plates (3011) are arranged at the intersection of the two ends of the two channels, two connecting grooves (3012) are arranged in the middle of the two channels, and one-way blocking plates (3011) are arranged at the inlet and the outlet of the connecting grooves (3012).
3. The weight adjustable dumbbell of claim 1, wherein the dumbbell component (5) comprises a handle (501) with a cavity, a main link (502) is slidably arranged in the cavity of the handle (501), one end of the main link (502) is connected with the cavity wall through a third spring (503), the other end of the main link is connected with an activation head (505) through an end link (504), a plurality of secondary links (506) are arranged on the main link (502), the ends of the secondary links (506) upwards penetrate through the cavity wall, a slotted hole matched with the ends of the secondary links (506) is arranged on a counterweight (507) of the dumbbell component (5); an electric cylinder (508) is fixed on the weight adjusting frame (4), and the electric cylinder (508) is positioned under the dumbbell component (5).
4. The weight-adjustable dumbbell of claim 1, wherein a second support plate (428) is fixed on the weight-adjusting rack (4), a one-way lead screw (429) is arranged on the second support plate (428), a fixing buckle (430) is connected to the one-way lead screw (429) in a threaded manner, a sliding rod (431) is fixed at the lower end of the fixing buckle (430), and the sliding rod (431) is slidably connected with the second support plate (428); the unidirectional screw rod (429) downwards penetrates through the bottom surface of the weight adjusting frame (4), a fifth gear (432) is fixed at the lower end of the unidirectional screw rod (429), a third rack (433) is arranged on the horizontal sliding rail (3), and the third rack (433) is meshed with the fifth gear (432).
5. A weight adjustable dumbbell as claimed in claim 1, characterised in that two pairs of rollers (434) are provided on the weight adjustment frame (4), the two pairs of rollers (434) being in frictional sliding contact with the dumbbell assembly (5), each pair of rollers (434) being connected by a fourth belt (435), one of which is connected to a motor (436).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210715275.8A CN114931721B (en) | 2022-06-23 | 2022-06-23 | Device for adjusting weight of dumbbell |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210715275.8A CN114931721B (en) | 2022-06-23 | 2022-06-23 | Device for adjusting weight of dumbbell |
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| CN114931721A true CN114931721A (en) | 2022-08-23 |
| CN114931721B CN114931721B (en) | 2024-05-24 |
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| CN202210715275.8A Active CN114931721B (en) | 2022-06-23 | 2022-06-23 | Device for adjusting weight of dumbbell |
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| CN209752048U (en) * | 2019-03-15 | 2019-12-10 | 重庆师范大学涉外商贸学院 | Dumbbell convenient to dismouting |
| CN110616921A (en) * | 2019-10-23 | 2019-12-27 | 宁夏博金特立体泊车设备有限公司 | Transverse vehicle storing and taking device |
| CN110787423A (en) * | 2019-11-20 | 2020-02-14 | 磐安创卫健身科技有限公司 | Automatic bench press training ware of adjustment weight |
| CN210698628U (en) * | 2019-06-06 | 2020-06-09 | 覃宏进 | Auxiliary replacement device for counter weight plate for barbell |
| CN111494877A (en) * | 2020-05-08 | 2020-08-07 | 福州利得特智能科技有限公司 | Weight lifting protection device capable of automatically weighting |
| CN112675476A (en) * | 2020-12-27 | 2021-04-20 | 南京佰贝莱医疗器械有限公司 | Dumbbell flat plate horizontal pushing auxiliary device capable of changing weight |
| CN214416803U (en) * | 2021-01-28 | 2021-10-19 | 天津市冠品文体器材有限公司 | Plastic spraying equipment of dumbbell production usefulness |
-
2022
- 2022-06-23 CN CN202210715275.8A patent/CN114931721B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209752048U (en) * | 2019-03-15 | 2019-12-10 | 重庆师范大学涉外商贸学院 | Dumbbell convenient to dismouting |
| CN210698628U (en) * | 2019-06-06 | 2020-06-09 | 覃宏进 | Auxiliary replacement device for counter weight plate for barbell |
| CN110616921A (en) * | 2019-10-23 | 2019-12-27 | 宁夏博金特立体泊车设备有限公司 | Transverse vehicle storing and taking device |
| CN110787423A (en) * | 2019-11-20 | 2020-02-14 | 磐安创卫健身科技有限公司 | Automatic bench press training ware of adjustment weight |
| CN111494877A (en) * | 2020-05-08 | 2020-08-07 | 福州利得特智能科技有限公司 | Weight lifting protection device capable of automatically weighting |
| CN112675476A (en) * | 2020-12-27 | 2021-04-20 | 南京佰贝莱医疗器械有限公司 | Dumbbell flat plate horizontal pushing auxiliary device capable of changing weight |
| CN214416803U (en) * | 2021-01-28 | 2021-10-19 | 天津市冠品文体器材有限公司 | Plastic spraying equipment of dumbbell production usefulness |
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| Publication number | Publication date |
|---|---|
| CN114931721B (en) | 2024-05-24 |
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