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CN-116899171-B - Adjustable dumbbell

CN116899171BCN 116899171 BCN116899171 BCN 116899171BCN-116899171-B

Abstract

The invention discloses an adjustable dumbbell, which comprises a holding rod assembly and a dumbbell piece, wherein the holding rod assembly comprises a connecting rod and a holding rod, both ends of the connecting rod are provided with hanging tools, the hanging tools are provided with hanging cavities, the holding rod is in running fit with the hanging tools, the holding rod is sleeved on the outer side of the connecting rod, both ends of the connecting rod are sleeved with guide sleeves, the guide sleeves are provided with tooth grooves, a gear transmission group meshed with the tooth grooves is arranged in the hanging tools, the end part of the holding rod is provided with a rotating part, the rotating part is provided with a meshing gear meshed with the gear transmission group, the rotating part is also fixedly provided with a gear guide plate, the gear guide plate is provided with a plurality of guide grooves, guide pieces are arranged between every two adjacent guide grooves, the guide pieces are provided with guide surfaces, and the hanging tools are provided with positioning pieces which elastically compress the gear guide plates, and have a trend of sliding towards the guide grooves on both sides of the guide surfaces when the positioning pieces are pressed on the guide surfaces. The reliable gear shifting of the adjustable dumbbell can be realized through the cooperation of the guide groove, the guide piece, the guide surface and the positioning piece on the gear guide piece, so that the dumbbell piece is prevented from falling off.

Inventors

  • LI ZHAN

Assignees

  • 宁波潮汐工业设计有限公司

Dates

Publication Date
20260512
Application Date
20230721

Claims (10)

  1. 1. The utility model provides an adjustable dumbbell, includes holding rod assembly and counter weight subassembly, the counter weight subassembly include the dumbbell piece, the holding rod assembly include connecting rod and holding rod, the both ends of connecting rod be provided with the hanger, the hanger be provided with the mount chamber that is used for carrying the dumbbell piece, the holding rod with the hanger normal running fit, the holding rod cover establish the outside of connecting rod, its characterized in that, the connecting rod be prismatic form, the both ends movable sleeve of connecting rod be equipped with the uide bushing that can remove to the mount intracavity, the uide bushing be provided with along its length direction's tooth's socket, the hanger in be provided with the gear drive group, gear drive group and tooth's socket mesh be used for driving the uide bushing and translate along the connecting rod, the tip of holding rod be provided with the rotating part, the rotating part be provided with the meshing gear with the gear drive group mesh, the rotating part still be fixed with the gear guide piece, the gear guide piece be provided with a plurality of guide slots, adjacent guide slots between be provided with the guide piece, the guide piece have a guide piece to compress tightly the guide piece when setting up the guide piece, the guide piece has the guide piece to the location piece, the guide piece has the guide piece to the location piece.
  2. 2. The adjustable dumbbell of claim 1, wherein the guide member has inclined sliding surfaces on both sides thereof, the guide surface being located between the sliding surfaces, the guide surface being a cambered surface and being smoothly excessive with the sliding surfaces.
  3. 3. The adjustable dumbbell of claim 1, wherein a plurality of said guide grooves are annularly and uniformly distributed on the side surfaces of said shift guide pieces, and said shift guide pieces are detachably engaged with said rotating portion.
  4. 4. The adjustable dumbbell of claim 1, wherein a plurality of positioning assemblies corresponding to the guide grooves are arranged in the hanger, and the contact surface of the positioning piece and the gear guide sheet is an arc surface.
  5. 5. The adjustable dumbbell of claim 4, wherein the positioning assembly comprises a positioning seat, the positioning member is movably disposed in the positioning seat, and a compression spring for compressing the positioning member is further disposed in the positioning seat.
  6. 6. The adjustable dumbbell of claim 1, wherein the guide sleeve is provided with a sliding hole that mates with the connecting rod, and wherein the guide sleeve engages the connecting rod.
  7. 7. The adjustable dumbbell of claim 1, wherein the gear drive assembly includes drive teeth, the drive teeth including a drive gear and a driven gear and an intermediate gear coaxially and fixedly disposed, the driven gear being engaged with the engagement gear, the intermediate gear being engaged with the drive gear, the drive gear being engaged with the tooth slot.
  8. 8. The adjustable dumbbell of claim 7, wherein intermediate gears are fixed to both sides of the driven gear, each intermediate gear is meshed with a corresponding driving gear, and tooth grooves meshed with the corresponding driving gears are arranged on the outer side of the guide sleeve side by side.
  9. 9. The adjustable dumbbell of claim 7, wherein the hanger is provided with a fixing base, the fixing base is provided with two opposite supporting plates, the gear transmission set is rotatably arranged between the two opposite supporting plates, the fixing base is provided with a telescopic hole, and the guide sleeve is transversely movably arranged in the telescopic hole.
  10. 10. The adjustable dumbbell of claim 1, further comprising an unlocking disc and a locking assembly arranged on the hanger and used for locking the holding rod, wherein the locking assembly comprises a locking groove and a locking block, the locking block is slidably arranged in the locking groove, a locking spring used for pressing the locking block is arranged in the locking groove, the rotating part is provided with a rotation stopping groove which is clamped with the locking block, the unlocking disc is provided with an unlocking piece corresponding to the locking block, when the positioning piece is positioned in the guiding groove, the locking block is aligned with the rotation stopping groove, and when the hanger is placed in the unlocking disc, the unlocking piece jacks up the locking block to enable the locking assembly to be in an unlocking state.

Description

Adjustable dumbbell Technical Field The invention relates to the field of fitness equipment, in particular to an adjustable dumbbell. Background The dumbbell is an auxiliary device for weight lifting and body building exercise, is mainly used for muscle strength training, and is popular with body building exercises because of small occupied space and convenient use. Currently, the dumbbell on the market can be divided into two types of fixed weight and adjustable weight, wherein the dumbbell with adjustable weight has better applicability because the weight can be adjusted to meet the requirements of different training strengths. The dumbbell with adjustable weight mainly comprises a holding rod assembly and a counterweight assembly, wherein the counterweight assembly mainly comprises dumbbell pieces, a plurality of dumbbell piece mounting positions which are adjacently arranged are respectively arranged at two ends of the holding rod assembly, meanwhile, the holding rod assembly is provided with a telescopic rod which can be telescopic to the dumbbell piece mounting positions, the change of the dumbbell piece mounting quantity is realized through the telescopic rod, and accordingly the adjustment of the dumbbell weight is realized. However, in the actual use process of the adjustable dumbbell, when a user rotates the holding rod to drive the telescopic rod to move, if the user does not rotate to a set gear, namely, the user is positioned between two adjacent gears, the telescopic rod is not fully inserted into the dumbbell piece at this time, and the corresponding dumbbell piece can be in a semi-engaged state. At this time, the holding rod assembly can drive the dumbbell piece to be lifted together, but the dumbbell piece is easy to shake or even separate in the lifting process. The dumbbell in this state easily causes unbalance of the weights at both ends of the holding rod, and is easy to cause injury to the user when being used by the user, especially when the dumbbell piece slips carelessly in the use process. Disclosure of Invention The invention aims to solve the technical problem of providing the adjustable dumbbell which is simple in structure, reliable in conversion and adjustment and convenient to use. In order to solve the technical problems, the adjustable dumbbell comprises a holding rod assembly and a counterweight assembly, the counterweight assembly comprises a dumbbell piece, the holding rod assembly comprises a connecting rod and a holding rod, hanging tools are arranged at two ends of the connecting rod, hanging cavities for hanging the dumbbell piece are arranged on the hanging tools, the holding rod is in rotary fit with the hanging tools, the holding rod is sleeved on the outer side of the connecting rod, the connecting rod is prismatic, guide sleeves capable of moving into the hanging cavities are movably sleeved at two ends of the connecting rod, tooth grooves are formed in the guide sleeves along the length direction of the guide sleeves, a gear transmission group is arranged in the hanging tools, the gear transmission group is meshed with the tooth grooves and used for driving the guide sleeves to translate along the connecting rod, rotating parts are arranged at the ends of the holding rod, meshing gears meshed with the gear transmission group are arranged on the rotating parts, gear guide plates are fixedly arranged on the rotating parts, a plurality of guide pieces are arranged on the gear guide plates, guide grooves are arranged between the adjacent guide pieces, the guide pieces are arranged between the guide pieces, and the guide pieces are arranged on the two sides of the guide pieces, and are arranged on the guide pieces, and the guide pieces are arranged on the guide pieces and are located on the two sides of the guide pieces and are located on the guide pieces. Furthermore, the two sides of the guide piece are provided with inclined sliding surfaces, the guide surfaces are positioned between the two sliding surfaces, the guide surfaces are cambered surfaces and are smooth and excessive with the sliding surfaces, and the guide piece has the advantages that the reliability of the positioning piece when being matched with the in-place guide piece can be ensured by matching the cambered guide surfaces with the sliding surfaces, and the phenomenon that the gear guide piece is blocked in movement or cannot rotate in place is avoided. Furthermore, the guide grooves are annularly and uniformly distributed on the side face of the gear guide piece, and the gear guide piece is detachably matched with the rotating part, so that the gear guide piece is beneficial to reliably matching with the positioning assembly along with the rotation of the rotating part through the plurality of annularly and uniformly distributed guide grooves. Meanwhile, the gear guide piece which is detachably arranged is convenient to maintain and install, production cost is reduced, and particularly replaceme