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Backward-pushing and forward-pulling schoolbag trolley

A technology of trolleys and schoolbags, applied in the field of school supplies, can solve problems such as insufficient functions and difficulty for children to find

Pending Publication Date: 2022-03-11
虞薛方媛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical solution can solve the problem that the angle cannot be adjusted, the limit angle value of the pull rod is 0° to 90°. When in use, it can only be pulled forward and cannot be pushed backward. The function is not comprehensive enough. Once the zipper of the schoolbag is not closed in place , when textbooks, pens and other school supplies fall, it is difficult for children to find

Method used

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  • Backward-pushing and forward-pulling schoolbag trolley
  • Backward-pushing and forward-pulling schoolbag trolley
  • Backward-pushing and forward-pulling schoolbag trolley

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment one: if figure 1 , 3 , 4, 5 shows a schoolbag trolley 1 car with both reverse push and smooth pull, including a trolley 1 and a base plate assembly 3, and the base plate assembly 3 is linked with a pulley block 2 evenly distributed around the base plate assembly 3, so The base plate assembly 3 includes a load-bearing base plate 31 that can be used to place schoolbags. The pull rods 1 are distributed on the upper front end of the load-bearing base plate 31 and the ends of the two are hinged to each other. A push-pull direction adjustment mechanism is provided between the load-bearing base plate 31 and the pull rod 1. 4. The push-pull direction adjustment mechanism 4 includes an angle-adjusting half-circle 41 and a steering adjustment rod 42; the angle-adjusting half-circle 41 includes an angle-adjusting plate 411 with a regular semicircular shape, and a limit half around the periphery of the angle-adjusting plate 411. Ring body 412, an installation gap 414 is...

Embodiment 2

[0051] Embodiment two: if figure 2 , 3 , a kind of reverse pushing shown in 4,5 and the school bag trolley 1 car that pulls along concurrently, compared with embodiment one, tarpaulin 5, tie rope 6 are not provided, and all the other structures are the same as embodiment one.

[0052] The advantages of embodiment two are as follows:

[0053] (1) The angle adjustment range of the tie rod 1 can be expanded to 0° to 180°. When it is pulled forward (also called smooth pull), it can be pulled forward from 0° to 90°, and can be reversed between 90° and 180°. Push (at the same time observe the situation of the schoolbag, and further solve the problem of missing items), promote the diversification of the use status of the schoolbag trolley 1, increase the overall fun of the schoolbag trolley 1, meet the needs of students, and adjust the trolley 1 according to their own needs. state of need;

[0054] (2) Using the push-pull direction adjustment mechanism 4, the pull rod 1 can be fo...

Embodiment 3

[0057] Embodiment three: as Figures 1 to 4 The schoolbag trolley car with both reverse push and straight pull shown is the same as the first embodiment except the following structure. The upper end of the steering adjustment rod 42 is provided with a third abutment slope 422, and the anti-reversal limit block 44 is located on the side facing the steering adjustment rod 42 and is provided with a fourth abutment slope 441 and a plane abutment surface 442. The four abutting slopes 441 are in conflicting connection with the third abutting slope 422 , and the plane abutting surface 442 is in conflicting connection with the side surface of the steering adjustment rod 42 . The third abutment slope 422 is set on the upper end of the steering adjustment rod 42, so only the anti-reversal limit block 44 needs to be installed at this time, and there is no need to install the front pull drive block 43, reducing the number of parts of the push-pull direction adjustment mechanism 4, that is...

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Abstract

The invention relates to a backward-pushing and forward-pulling schoolbag pull rod trolley which comprises a pull rod, a bottom plate assembly and a pulley block, the bottom plate assembly comprises a bearing bottom plate, a push-pull direction adjusting mechanism is arranged between the bearing bottom plate and the pull rod, and the backward-pushing and forward-pulling schoolbag pull rod trolley is characterized in that the push-pull direction adjusting mechanism comprises an angle adjusting semicircular piece and a steering adjusting rod; the angle-adjusting semicircular piece comprises an angle-adjusting plate, a limiting semi-ring body, a mounting gap and an angle-adjusting triangular block, and the lower end of the steering adjusting rod is provided with a first abutting inclined surface which can be connected with the inclined surface of the angle-adjusting triangular block in an abutting manner; the two sides of the steering adjusting rod are provided with a forward pulling driving block and an anti-reversion limiting block respectively. The schoolbag pull rod trolley has the beneficial effects that the angle adjusting range of the pull rod can be expanded to 0-180 degrees, so that the use state of the schoolbag pull rod trolley is diversified, the overall interestingness of the schoolbag pull rod trolley is improved, the requirements of students are met, and the pull rod is adjusted to the needed state according to the needs of the students.

Description

technical field [0001] The invention relates to the technical field of school supplies, in particular to a trolley for a schoolbag with reverse push and straight pull. Background technique [0002] With the development of social economy, the concept of prenatal and postnatal care has also increased. More and more parents are more willing to invest in their children's education. Books are placed on the desktop of the desk or in the table hole, and the weight of the schoolbag increases thereupon. Then the schoolbag trolley was derived, which was used as a tool for students to reduce the weight of backpacks, and was used to help students lose weight. [0003] At present, when the schoolbag trolley is in use, there is only a way of pulling it forward, that is, a person stands on the front side of the schoolbag trolley and is located on the side away from the schoolbag, and pulls the schoolbag trolley by hand to drive it forward. [0004] For example, the utility model patent d...

Claims

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Application Information

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IPC IPC(8): B62B5/06B62B5/00B62B3/02
CPCB62B5/066B62B5/00B62B3/02B62B2205/00
Inventor 虞薛方媛
Owner 虞薛方媛
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