CN213884888U

CN213884888U - Adjustable dumbbell

Info

Publication number: CN213884888U
Application number: CN202023084196.7U
Authority: CN
Inventors: 吴世权; 黄京爱
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-08-06
Anticipated expiration: 2030-12-18
Also published as: US20220193480A1

Abstract

The utility model relates to a dumbbell with adjustable, including the rotatable holding rod that sets up and carry out the locking device who rotates the locking to the holding rod, the holding rod both ends are provided with the sticking department, locking device includes base, activity round pin and pressure spring, setting in the base in the activity round pin slidable ground, be equipped with first spring sleeve post on the base, be equipped with second spring sleeve post on the activity round pin, the both ends of pressing the spring cup joint the location respectively on first spring sleeve post and the second spring sleeve post, and press the spring both ends to lean on respectively on base and activity round pin, the activity round pin with the help of the elasticity restoring force of pressing the spring is opened a roof and is gone into to the base outside in the locking portion, thereby the locking the rotation of holding rod. The utility model discloses all set up the spring sleeve post on sliding connection's base and the loose pin in locking device, the compression spring location of installing when both being convenient for to the equipment also can prevent in use that the compression spring from deviating from because of rocking of dumbbell.

Description

Adjustable dumbbell

Technical Field

The utility model relates to a body-building apparatus field, concretely relates to dumbbell with adjustable can quick adjustment dumbbell piece quantity especially relates to wherein the improvement of rotating locking device.

Background

The dumbbell is taken as a common fitness device and is popular among various fitness enthusiasts. The existing adjustable dumbbell, like the most common nut locking type, needs a user to detach or install dumbbell pieces one by one and then lock the dumbbell pieces by using a wrench, and is complex to use. In order to facilitate the adjustment of the dumbbell pieces, as proposed in patent publication No. CN111450475, the adjustment of the number of the dumbbell pieces is realized by shifting the inner gear ring and driving the planetary gear mechanism to drive the telescopic rod to extend and retract, and the gear teeth of the inner gear ring are clamped by the clamping pin device and the protruding piece in the shape of a sawtooth, so as to lock the rotation of the inner gear ring. The rotation locking device adopts the meshing locking between the teeth, and the assembly precision requirement is high. In the prior art, the assembly of the compression spring in the clamping pin device is not supported by a positioning structure, and the dumbbell is lifted frequently, so that the shaking among parts is large, and the problem of failure such as the compression spring jumping out is easily caused in long-term use.

SUMMERY OF THE UTILITY MODEL

Therefore, to the above-mentioned problem, the utility model provides a dumbbell with adjustable configuration optimization.

The utility model discloses a following technical scheme realizes:

the utility model provides a dumbbell with adjustable, including dumbbell piece governing system and locking device, dumbbell piece governing system is used for adjusting the quantity of the dumbbell piece of attach on adjustable dumbbell, dumbbell piece governing system has the sticking department, locking device includes base, movable pin and pressure spring, movable pin slidable ground sets up in the base, be equipped with first spring jacket post on the base, be equipped with second spring jacket post on the movable pin, the location is cup jointed respectively at the both ends of pressing the spring on first spring jacket post and the second spring jacket post, and press the spring both ends to lean on respectively on base and movable pin, the movable pin with the help of the elastic restoring force of pressing the spring is opened a top and is gone into to the base outside in the locking portion, thereby the locking dumbbell piece governing system.

Preferably, the compression spring, the first spring sleeve column and the second spring sleeve column are arranged in two groups side by side in order to improve the stability of the assembly and the movement of the locking device.

Wherein, for the sliding connection's that improves base and activity round pin reliability, prefer be equipped with the bellied slide of U style of calligraphy on the base, the activity round pin has the appearance and matches the spout of slide, spout and slide sliding fit.

Wherein, for the sliding connection's that improves base and removable pin reliability, prefer the removable pin appearance is roughly the cuboid, has first side and is in the second side of first side opposite side, respectively be equipped with two side by side on first side and the second side the spout, the base has the adaptation the removable pin roughly is the inside groove of rectangle, respectively be equipped with two side by side on two relative cell walls of inside groove the slide.

Wherein, based on manufacturing and installation considerations, the dumbbell sheet adjusting system comprises a holding rod, a flange transmission part, a planetary gear system and a telescopic rod, the flange transmission parts are fixedly assembled at two ends of the holding rod, the planetary gear system comprises an outer shell and a planetary gear mechanism arranged in the outer shell, the telescopic rod is spirally transmitted to the planetary gear mechanism, so that when the holding rod rotates, the flange transmission part drives the planetary gear mechanism to rotate and enables the telescopic rod to extend and retract, thereby adjusting the number of dumbbell pieces attached to the adjustable dumbbell, the locking device being fixedly mounted on the outer housing, the flange drive extending into the outer housing, and one end of the flange transmission piece facing the outer shell is provided with a locking ring in an annular structure, and the locking part is a notch which is arranged on the locking ring and matched with the shape of the movable pin.

The planetary gear mechanism comprises an inner gear ring, a planet gear, a planet carrier and a sun gear, the planet carrier is fixed on the outer shell, the inner gear ring is in linkage connection with the flange transmission part, the sun gear is a gear shaft with a shaft hole, and the telescopic rod is connected in the shaft hole of the gear shaft through a spiral pair.

The utility model discloses following beneficial effect has: the utility model discloses all set up the spring sleeve post on sliding connection's base and the loose pin in locking device, the compression spring location of installing when both being convenient for to the equipment also can prevent in use that the compression spring from deviating from because of rocking of dumbbell.

Drawings

FIG. 1 is a schematic view of an adjustable dumbbell according to an embodiment;

FIG. 2 is a schematic illustration of a dumbbell body and dumbbell sheet in an example 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 structure of the dumbbell body in the example;

FIG. 7 is a schematic view of a grip and flange drive of an embodiment;

FIG. 8 is a schematic view (angle one) of a flange transmission according to an embodiment;

FIG. 9 is a schematic view of a flange drive of an embodiment (angle two);

FIG. 10 is a schematic view of an embodiment planetary gear system;

FIG. 11 is an exploded view of an exemplary planetary gear system configuration;

FIG. 12 is a sectional view of the gear shaft in the embodiment;

FIG. 13 is a schematic view of a base of the locking device in the embodiment;

fig. 14 is a schematic view of a movable pin of the locking device in the embodiment.

Detailed Description

To further illustrate the embodiments, the present 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. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1-2, as the preferred embodiment of the present invention, an adjustable dumbbell is provided, which comprises a dumbbell main body 10 substantially shaped like "I" and a plurality of dumbbell pieces installed at two ends of the dumbbell main body 10, wherein the first dumbbell pieces at two ends of the dumbbell main body 10 are fixedly connected to the dumbbell main body 10, and the other dumbbell pieces are accumulatively installed on the first dumbbell pieces at two ends of the dumbbell main body 10, as shown in fig. 3, each dumbbell piece is symmetrically provided with a dovetail and a dovetail groove, and the accumulation of the dumbbell pieces is realized by the joint of the dovetail and the dovetail groove on the adjacent dumbbell pieces.

Referring to fig. 4-6, dumbbell body 10 has dumbbell piece governing system, dumbbell piece governing system includes holding rod 1, the fixed flange driving medium 2 that sets up at holding rod 1 both ends, planetary gear system 4 that is connected with the transmission of flange driving medium 2 and the telescopic link subassembly 6 of wearing inside dumbbell body 10, telescopic link subassembly 6 includes first telescopic link 61 and the second telescopic link 62 that is roughly half shaft form, dumbbell body 10 is through rotating holding rod 1, through the transmission of flange driving medium 2 and planetary gear system 4, finally make first telescopic link 61 and second telescopic link 62 synchronous, stretch out or retract back to back on the ground, first telescopic link 61 and second telescopic link 62 pass the centre bore of dumbbell piece and hang the dumbbell piece, thereby adjust the quantity of the dumbbell piece at this main body 10 both ends of dumbbell body.

Referring to fig. 5 and 7-9, the holding rod 1 is tubular and has a central hole for the telescopic rod assembly 6 to pass through, the outer surface of the holding rod 1 has concave-convex lines to increase the friction force held by the user, the holding rod 1 and the flange driving member 2 are fixedly assembled together, the flange driving member 2 is substantially funnel-shaped and has a central hole 201, and includes an outer shell portion formed by joining a shell 21 and a locking ring 22, and further includes a first plug 26 formed inside the outer shell portion, and the first plug 26 protrudes in the axial direction of the flange driving member 2. The housing 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 housing 41 of the planetary gear system 4, so that the large-caliber end is in butt joint with the outer housing 41 of the planetary gear system 4 to approximately seal the planetary gear and prevent dust and other problems from entering the planetary gear. The large-diameter end is further connected with a locking ring 22 through a reducing step 23, the locking ring 22 is annular, a plurality of notch-shaped locking grooves 221 (serving as locking parts) are uniformly formed in the free end of the locking ring, and when the flange driving piece 2 and the planetary gear system 4 are jointed together, the locking ring 22 extends into the outer shell 41 of the planetary gear system 4, so that the locking grooves 221 of the locking ring are matched with the locking device 40 on the planetary gear system 4, and the flange driving piece 2 and the holding rod 1 are locked in rotation relative to the outer shell 41.

Referring to fig. 10 to 12, the planetary gear system 4 includes an outer housing 41, a planetary gear mechanism provided inside the outer housing 41, and a locking device 40 fitted to the outer housing 41. The planetary gear mechanism is composed of an inner gear ring 42, a planet gear 44, a planet carrier 45 and a gear shaft 46 as a sun gear, the gear shaft 46 comprises an integrated shaft and a first gear 461, the gear shaft 46 is provided with a hollow shaft hole, the inner wall of the shaft hole is provided with an inwards concave spiral groove 462, and the spiral groove 462 is used for being matched with an external thread on the first telescopic rod 61 or the second telescopic rod 62, so that when the gear shaft 46 rotates, the first telescopic rod 61 and the second telescopic rod 62 are driven to extend or retract. 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 in constant mesh 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, the first gear 461 on the gear shaft 46 is in mesh 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 inner gear ring 42, the bearing iron ring 43 is further fixed with the flange transmission piece 2 in a threaded manner, a first slot 423 and a second slot 433 are respectively formed in corresponding positions on the inner gear ring 42 and the bearing iron ring 43, the first bolt 26 is inserted and matched, when the flange transmission piece 2 is connected with the planetary gear system 4, the first bolt 26 is aligned and inserted into the first slot 423 (the second slot 433) to complete positioning, and then the bearing iron ring 43 is fixed with the flange transmission piece 2 in a threaded manner through screws, so that the bearing iron ring 43, the inner gear ring 42 and the flange transmission piece 2 are connected into a whole. Through the bearing iron ring 43, the inner gear ring 42 and the flange transmission piece 2 are connected into a whole, so that when the flange transmission piece 2 is rotated, the inner gear ring 42 can be rotated, and because the flange transmission piece 2 is fixedly assembled with the holding rod 1, when the holding rod 1 is rotated, the inner gear ring 42 can be rotated, and further, through the planetary gear transmission, the gear shaft 46 is rotated, and the gear shaft 46 is matched with the external thread on the first telescopic rod 61 or the second telescopic rod 62 through the spiral groove 462 in the shaft hole of the gear shaft 46 to drive the first telescopic rod 61 and the second telescopic rod 62 to extend or retract.

The outer housing 41 is fixedly connected to the dumbbell sheet via the dumbbell sheet mounting plate 5, so that the outer housing 41 is kept stationary by the weight of the dumbbell sheet when the grip 1 rotates.

In order to avoid the potential safety hazard caused by mistakenly rotating the holding rod 1 when lifting the dumbbell, the dumbbell piece adjusting system is further locked by the device. With continued reference to fig. 11 and 13-14, the lockout device 40 is mounted to the outer housing 41, the lockout device 40 including a base 401 and a movable pin 402, the movable pin 402 being slidably mounted within the base 401 and the movable pin 402 always having a tendency to move radially outward toward the outer housing 41 by a compression spring (not shown) mounted between the base 401 and the movable pin 402. Specifically, the base 401 includes an inner groove 4011 approximately matching the shape of the movable pin 402, and two opposite groove walls of the inner groove 4011 are provided with U-shaped protruded slideways 4012 for cooperating with a chute 4023 on the movable pin 402 to form a sliding connection therebetween; the base 401 is further provided with a first spring sleeve column 4013 for sleeving the compression spring. The main body of the movable pin 402 is a rectangular body, and a locking block 4022 matched with the shape of the locking groove 221 is arranged at one end of the main body facing the outer side of the base 401, and is used for replacing the main body of the movable pin 402 and the locking groove 221 to realize locking. The movable pin 402 is provided with a sliding groove 4023, the movable pin 402 is arranged in the inner groove 4011, the sliding groove 4023 of the movable pin is matched with the sliding groove 4012 to realize the sliding connection between the base 401 and the movable pin 402, and the movable pin 402 is further provided with a second spring sleeve post 4021 for sleeving a compression spring. In this embodiment, through setting up first spring housing 4013 and second spring housing 4021, both be convenient for press the spring to install the location when the equipment, also can prevent in use that the pressure spring from deviating from because of rocking of dumbbell, and press spring, first spring housing 4013 and second spring housing 4021 to be equipped with two sets of side by side to improve the stability of locking device assembly and motion. The slide 4012 is formed to be U-shaped convex, and the slide 4012 and the slide groove 4023 are provided with two side by side on two opposite groove walls of the inner groove 4011 and on opposite side edges of the movable pin 402, respectively, which contributes to improvement of reliability of the sliding connection of the base 401 and the movable pin 402. The locking ring 22 of the flange driver 2 protrudes into the outer housing 41 of the planetary gear system 4, and thus the movable pin 402 is inserted into the locking groove 221 of the locking ring 22 to restrict the rotation of the grip 1 and the flange driver 2 with respect to the outer housing 41.

An exposed hole 413 for exposing the locking block 4022 is formed in the outer shell 41, and when the rotation of the holding rod 1 and the flange transmission piece 2 relative to the outer shell 41 needs to be unlocked, the locking block 4022 is pressed down to complete unlocking.

While the specific structure and function of the locking device 40 is described in the present example as a dumbbell sheet adjustment system using a grip driving planetary gear system as an adjustment form, the locking device 40 provided in the present example may be used in other dumbbell sheet adjustment systems, such as a dumbbell sheet adjustment system using a movable driving telescoping rod, in which the locking device 40 locks the movement of the telescoping rod.

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

1. An adjustable dumbbell, which is characterized in that: including dumbbell piece governing system and locking device, dumbbell piece governing system is used for adjusting the quantity of the dumbbell piece of attach on adjustable dumbbell, dumbbell piece governing system has the sticking department, locking device includes base, activity round pin and pressure spring, activity round pin slidable ground sets up in the base, be equipped with first spring jacket post on the base, be equipped with second spring jacket post on the activity round pin, the both ends of pressing the spring cup joint the location respectively on first spring jacket post and the second spring jacket post, and press the spring both ends to lean on respectively on base and activity round pin, the activity round pin with the help of the elastic restoring force of pressing the spring opens the top and blocks in to the base outside in the locking portion, thereby locks dumbbell piece governing system.

2. The adjustable dumbbell of claim 1, wherein: the compression spring, the first spring sleeve column and the second spring sleeve column are provided with two groups in parallel.

3. The adjustable dumbbell of claim 1, wherein: the base is provided with a raised slide way in a U shape, the movable pin is provided with a sliding groove, the appearance of the sliding groove is matched with that of the slide way, and the sliding groove is in sliding fit with the slide way.

4. The adjustable dumbbell of claim 3, wherein: the movable pin is characterized in that the appearance of the main body of the movable pin is approximately a rectangular body, the main body of the movable pin is provided with a first side edge and a second side edge which is positioned at the opposite side of the first side edge, the first side edge and the second side edge are respectively provided with two parallel sliding grooves, the base is provided with an adaptive inner groove which is approximately rectangular and is provided with the movable pin, and two parallel sliding grooves are respectively arranged on two opposite groove walls of the inner groove.

5. The adjustable dumbbell of claim 1, wherein: dumbbell piece governing system includes holding rod, flange driving medium, planetary gear system and telescopic link, the fixed assembly of flange driving medium is at the both ends of holding rod, planetary gear system includes the shell body and establishes the planetary gear mechanism in the shell body, telescopic link spiral drive in planetary gear mechanism, thereby when the holding rod rotates, the drive of flange driving medium planetary gear mechanism rotates and makes the telescopic link is flexible to the quantity of the dumbbell piece of regulation hookup on adjustable dumbbell, locking device fixed mounting be in on the shell body, the flange driving medium stretches into in the shell body the flange driving medium orientation shell body one end is equipped with the locked ring that is annular structure, the sticking department sets up match on the locked ring the breach of loose pin appearance.

6. The adjustable dumbbell of claim 5, wherein: the planetary gear mechanism comprises an inner gear ring, a planet wheel, a planet carrier and a sun gear, the planet carrier is fixed on the outer shell, the inner gear ring is in linkage connection with the flange transmission part, the sun gear is a gear shaft with a shaft hole, and the telescopic rod is connected in the shaft hole of the gear shaft through a spiral pair.