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CN-224225104-U - Handcart provided with gear type rotating assembly

CN224225104UCN 224225104 UCN224225104 UCN 224225104UCN-224225104-U

Abstract

The utility model discloses a handcart provided with a gear type rotating assembly, which comprises a frame, wherein the frame comprises a folding underframe, a front bracket and a rear bracket, the folding underframe comprises a first underframe and a second underframe, the first underframe is connected with the second underframe through the gear type rotating assembly, the gear type rotating assembly comprises a fixing piece, a first gear rotating piece and a second gear rotating piece, the first gear rotating piece and the second gear rotating piece are in meshed connection, the front bracket is provided with a front wheel assembly and a pull rod assembly, and the rear bracket is provided with a rear wheel assembly. According to the handcart disclosed by the utility model, the gear type rotating assembly is arranged on the folding underframe, so that the first underframe and the second underframe are simultaneously connected in the fixing piece, accessories required by connection between the two underframes are reduced, the use cost is reduced, and the two gear structures are used for synchronously meshing rotation, so that the linkage structural relationship is simplified, the convenience and the stability of the operation of the handcart are obviously improved, and the use rigidity of the whole handcart is also improved.

Inventors

  • LI XIANG

Assignees

  • 永康市项华户外用品有限公司

Dates

Publication Date
20260512
Application Date
20250617

Claims (9)

  1. 1. A handcart provided with a gear type rotating assembly comprises a frame and is characterized in that the frame comprises a folding underframe, a front support and a rear support, the folding underframe comprises a first underframe and a second underframe, one end of the first underframe is rotationally connected with the front support, one end of the second underframe is rotationally connected with the rear support, the other end of the first underframe is connected with the other end of the second underframe through the gear type rotating assembly, the gear type rotating assembly comprises a fixing piece, a first gear rotating piece and a second gear rotating piece, one ends of the first underframe and the second underframe are respectively and movably connected in the fixing piece, the end of the first underframe, which is located in the fixing piece, is connected with the first gear rotating piece, the end of the second underframe, which is located in the fixing piece, is in meshed rotation connection with the second gear rotating piece, the first gear rotating piece and the second gear rotating piece are mutually abutted against each other when the handcart is unfolded, a front wheel assembly and a pull rod assembly are arranged on the front support, and a rear wheel assembly is arranged on the rear support.
  2. 2. A trolley provided with a gear-type rotating assembly according to claim 1, wherein the first chassis comprises two first rotating rods and two second rotating rods, the second chassis comprises two third rotating rods and two fourth rotating rods, one ends of the first rotating rods, the second rotating rods, the third rotating rods and one ends of the fourth rotating rods are respectively and movably connected in the fixing piece, the first rotating rods and the second rotating rods are vertically parallel, the third rotating rods and the fourth rotating rods are vertically parallel, the end of the first rotating rods, which is movably connected with the fixing piece, is sleeved with a first gear rotating piece, the end of the third rotating rods, which is movably connected with the fixing piece, is sleeved with a second gear rotating piece, and the first gear rotating piece and the second gear rotating piece are in meshed connection.
  3. 3. A trolley provided with a gear-type rotating assembly according to claim 2, wherein the fixing member comprises an integrally formed fixing portion and two symmetrical fixing pieces, a limiting clamping groove is formed between the two fixing pieces, clamping tables are symmetrically formed at the lower ends of the two fixing pieces, the first rotating rod and the third rotating rod respectively extend into the limiting clamping groove and are movably connected to the two fixing pieces and are located below the fixing portion, the second rotating rod and the fourth rotating rod respectively extend into the limiting clamping groove and are movably connected to the two fixing pieces and are located below the clamping tables, the first gear rotating member and the second gear rotating member respectively comprise a connecting portion and a gear portion, the connecting portion is sleeved in the first rotating rod or the third rotating rod, the gear portion of the first gear rotating member and the gear portion of the second gear rotating member are in meshed connection, and the gear portion rotates along the inside of the limiting clamping groove.
  4. 4. A trolley provided with a gear-type rotating assembly according to claim 3, wherein a first positioning groove and a second positioning groove are further formed between the connecting part and the gear part, one ends of the first rotating rod and the third rotating rod are provided with L-shaped mounting openings, the connecting part extends into the first rotating rod or the third rotating rod from the end of the L-shaped mounting opening, the L-shaped mounting openings are respectively clamped into the first positioning groove and the second positioning groove, and connecting screws are further arranged between the connecting part and the first rotating rod or the third rotating rod.
  5. 5. A trolley provided with a gear-type rotating assembly as claimed in claim 4, wherein the bottom notch of the limit slot is further provided with a reinforcing connecting piece, the reinforcing connecting piece comprises an integrally formed connecting rod and two connecting pieces, the two connecting pieces are respectively connected with the two fixing pieces and are positioned on the outer sides of the fixing pieces, and the connecting rod is positioned below the limit slot.
  6. 6. A trolley provided with a geared rotary assembly as claimed in claim 5, wherein a support frame is provided between the two first rotary bars and between the two third rotary bars.
  7. 7. A trolley provided with a gear-type rotating assembly according to any one of claims 2 to 6, wherein the pull rod assembly comprises an outer tube, an inner tube and a pull rod, one end of the outer tube is rotatably connected to the front support through a connector, a first limit sleeve is sleeved at the other end of the outer tube, a first pressing piece is arranged on the first limit sleeve, one end of the inner tube stretches into the outer tube, a second limit sleeve is sleeved at the other end of the inner tube, a second pressing piece is arranged on the second limit sleeve, the first pressing piece and the second pressing piece are arranged in alignment, one end of the pull rod stretches into the inner tube, a handle is arranged at the other end of the pull rod, a perforation is arranged at the end of the outer tube, which is close to the first limit sleeve, a first steel ball is elastically stretched at the perforation of the outer tube and is in contact with or separated from the first pressing piece, a perforation is arranged at the end of the inner tube, and a second steel ball is elastically stretched at the perforation of the second steel ball and is elastically stretched out and separated from the second steel ball.
  8. 8. A trolley with a gear type rotating assembly according to claim 7, wherein the first stop collar and the second stop collar are provided with positioning blocks, the outer tube and the inner tube are provided with positioning holes correspondingly, and the first pressing piece and the second pressing piece are further provided with positioning projections for pressing steel balls.
  9. 9. A trolley provided with a gear-type rotating assembly according to claim 8, wherein the front bracket is provided with a U-shaped mounting seat for mounting the connector, the two sides of the front bracket and the two sides of the rear bracket are symmetrically provided with trapezoid mounting seats for mounting the folding chassis, and the ends of the first rotating rod, the second rotating rod, the third rotating rod and the fourth rotating rod are respectively and rotatably connected in the corresponding trapezoid mounting seats.

Description

Handcart provided with gear type rotating assembly Technical Field The utility model relates to the technical field of trolleys, in particular to a trolley provided with a gear type rotating assembly. Background With the improvement of living standard of people, the willingness of outdoor activities is stronger and the requirement on living convenience is higher, when in outdoor activities, the trolley is required to carry some scattered sundries required by activities, and the trolley is basically folded for the convenience of convenient carrying. For example, chinese patent publication No. CN220298529U discloses a cart convenient for stable folding and unfolding, including a frame and a cloth cover sleeved on the frame, the frame includes a front U-shaped frame and a rear U-shaped frame, a first chassis is hinged to a lower end of one side of the front U-shaped frame, a second chassis is hinged to a lower end of one side of the rear U-shaped frame, two sides of one end of the first chassis, which is close to the second chassis, are connected through synchronous hinge members, the synchronous hinge members include a connecting plate, a first synchronous sector gear and a second synchronous sector gear, the first synchronous sector gear is fixedly connected to one end of the first chassis, the second synchronous sector gear is fixedly connected to one end of the second chassis, the first synchronous sector gear is meshed with the second synchronous sector gear, one end of the connecting plate is hinged to one end of the first chassis, and the other end of the connecting plate is hinged to one end of the second chassis. However, as is apparent from fig. 4-6 in the above patent, two connecting plates in the cart need to be symmetrically designed, opposite connecting points are designed between the connecting plates and the two underframes, and a limit notch is also required to be formed at the top of the connecting plates, and clamping columns are fixedly connected to the two synchronous sector gears, so that the cart can be fixed after being unfolded. Disclosure of utility model The utility model aims to provide a handcart provided with a gear-type rotating assembly, which solves the problems of high installation requirement of the handcart, unsmooth operation, unstable whole-vehicle bearing and high use cost when being unfolded and used, which are caused by more accessories required for realizing folding of a handcart chassis group in the prior art. In order to achieve the above purpose, the present utility model provides the following technical solutions: A handcart provided with a gear type rotating assembly comprises a frame and is characterized in that the frame comprises a folding underframe, a front support and a rear support, the folding underframe comprises a first underframe and a second underframe, one end of the first underframe is rotationally connected with the front support, one end of the second underframe is rotationally connected with the rear support, the other end of the first underframe is connected with the other end of the second underframe through the gear type rotating assembly, the gear type rotating assembly comprises a fixing piece, a first gear rotating piece and a second gear rotating piece, one ends of the first underframe and the second underframe are respectively and movably connected in the fixing piece, the end of the first underframe, which is located in the fixing piece, is connected with the first gear rotating piece, the end of the second underframe, which is located in the fixing piece, is in meshed rotation connection with the second gear rotating piece, the first gear rotating piece and the second gear rotating piece are mutually abutted against each other when the handcart is unfolded, a front wheel assembly and a pull rod assembly are arranged on the front support, and a rear wheel assembly is arranged on the rear support. Preferably, the first chassis includes two first rotary rods and two second rotary rods, the second chassis includes two third rotary rods and two fourth rotary rods, the first rotary rods, the second rotary rods, one ends of the third rotary rods and the fourth rotary rods are respectively movably connected in the fixing piece, the first rotary rods and the second rotary rods are vertically parallel, the third rotary rods and the fourth rotary rods are vertically parallel, the first rotary rods are movably connected with the fixing piece in a sleeved mode, the second rotary rods are arranged in a sleeved mode, and the first rotary rods and the second rotary rods are in meshed connection. Preferably, the fixing piece comprises a fixing part and two symmetrical fixing pieces which are integrally formed, a limiting clamping groove is formed between the two fixing pieces, clamping tables are further symmetrically formed at the lower ends of the fixing pieces, the first rotating rod and the third rotating rod respectively extend into the limiting cla