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Mechanical linkage mechanism, folding frame and cart

A linkage mechanism and mechanical technology, applied in the field of mechanical linkage mechanism, folding frame and cart, can solve the problem of the contradiction between the firmness of the cart and the sensitivity of operation, and achieve the effect of improving the degree of compression

Inactive Publication Date: 2022-03-11
湖北厚谷阳光儿童用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still technical defects: the linkage of the front leg tube depends on the telescopic sliding fit between the front leg tube and the embedded tube, however, the sensitivity when the stroller is folded or unfolded, and the overall structural strength of the front leg tube and the embedded tube are inversely proportional , that is, there is a contradictory relationship between the firmness of the cart and the sensitivity of the operation

Method used

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  • Mechanical linkage mechanism, folding frame and cart
  • Mechanical linkage mechanism, folding frame and cart
  • Mechanical linkage mechanism, folding frame and cart

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0031] refer to Figure 1-Figure 4 , a mechanical linkage mechanism, comprising a first joint 1, a second joint 2, an upper tube 3, a front tube 4, and a rear tube 5, the first joint 1 and the second are hinged, and the upper tube 3 The proximal end is fixedly connected to the first joint 1, and the proximal end of the rear pipe 5 is fixedly connected to the second joint 2; the proximal end of the front pipe 4 is hinged on the first joint 1, and the first joint 1 A sliding structure 6 is provided, and the front pipe 4 is provided with a guide groove 41, and the sliding structure 6 and the guide groove 41 are slidably matched. The sliding structure 6 can slide along the extending direction of the guide groove 41, so that when the first joint 1 and the second joint 2 rotate relative to each other, the front tube 4 and the upper tube 3 move toward the rear synchronously. The tube 5 is folded / unfolded. It should be noted that, in this application, for the upper tube 3, the front...

Embodiment example 2

[0051] refer to Figure 5 , a folding frame, comprising two left-right spaced and mirror-symmetric linkage mechanisms, and a handle tube 31 connecting the upper tubes 3 of the two linkage mechanisms. Among them, the linkage mechanism is the solution provided by the implementation case 1. The handle tube 31 is provided with an unlocking structure S3 that is movable and connected to the traction rope, and is used to drive the traction rope to pull the lock. The unlocking structure S3 is preferably sleeved on the handle tube. 31, the user holds the rotating sleeve and rotates it around the handle pipe 31 to a certain extent in the axial direction to release the locking of the first joint and the second joint by the locking member S, so that the folding frame can be unfolded or folded.

Embodiment example 3

[0053] refer to Figure 6 , a stroller, including the folding frame, wherein the folding frame is the solution provided in Example 2, and the front wheels 7 and rear wheels 8 are respectively installed at the far ends of the front tube 4 and the rear tube 5 of the folding frame. Load frames 9 are installed on the two first joints or the two second joints of the folding frame for loading.

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PUM

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Abstract

The invention discloses a mechanical linkage mechanism which comprises a first joint, a second joint, an upper pipe, a front pipe and a rear pipe. The first joint is hinged to the second joint; the near end of the upper tube is fixedly connected to the first joint; the near end of the rear tube is fixedly connected to the second joint; the near end of the front tube is hinged to the first joint; the front pipe is provided with a guide groove extending linearly, the first joint is provided with a sliding structure in sliding fit with the guide groove, and the sliding structure can slide in the extending direction of the guide groove, so that when the first joint and the second joint rotate relatively, the front pipe and the upper pipe are folded / unfolded towards the rear pipe synchronously. The device has the beneficial effect that the contradictory relation between the operation sensitivity and the firmness is relieved.

Description

technical field [0001] The invention relates to a mechanical linkage mechanism, a folding frame and a trolley, and belongs to the technical field of retractable or folding structures. Background technique [0002] Foldable loading carts (such as baby carriages, carrying carts), which can be unfolded for loading when in use and folded up for storage when not in use, among them, the support and stability after unfolding, the operation of unfolding and folding Convenience and labor saving in the unfolding and folding process are common pursuits for technical improvements in related industries. [0003] For example, the invention patent with the patent number ZL201821655970.5 in the prior art discloses a foldable trolley frame, including joint components, front leg tubes, handle tubes, rear leg tubes, front wheels, rear wheels, and control devices. The joint components include static joints There is a locking gear between the seat and the dynamic joint seat; the static joint se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62B7/08B62B3/02
CPCB62B7/086B62B3/02B62B2205/32
Inventor 游雄兵向二英王振
Owner 湖北厚谷阳光儿童用品有限公司