CN2316212Y - Three-wheel trolley with retractable device - Google Patents

Abstract

A three-wheel handcart with folding device is composed of a front frame, a back frame, a basket for holding articles and a push handle, and features that a connecting block is fixed to the top of front frame for pivoting the push handle to fold it toward front wheel, so reducing the length of the handcart.

Description

Three-wheel trolley with retractable device

The utility model relates to a baby trolley, in particular to a foldable three-wheeled trolley with a folding device.

General strollers can be placed in the trunk of a car or in a narrow place for the convenience of carrying and the storage does not take up space. Therefore, it must be a baby stroller that can be folded and reduced in size. As shown in Figures 1 and 2, it is a baby trolley 10 used for going out in the past. It is to cover a seat 12 and a sunshade 13 on the top surface of a skeleton 11, and two front and rear sides of the chassis 14 Each end is pivotally provided with wheels 15, and the frame 11 is respectively provided with a rod 16 near the middle section. The front section of the underframe 14 cooperates with the jack 17 to be provided with a positioning seat 18, and a positioning insertion rod 19 with resilience is passed through the positioning seat 18. When using the trolley 10, the front end of the framework 11 is inserted into the positioning position. In the seat 18, the positioning insert rod 19 is inserted into the socket 17 for positioning, and at the same time, the support rod 16 supports the frame 11 and the bottom rod 14, so that the seat 12 of the trolley 10 has a tension for lying on the back , as shown in Figure 3, when you want to fold the trolley 10, you only need to rotate the sunshade cover 13 toward the frame 11, and then pull up the positioning insertion rod 19, so that the positioning insertion rod 19 is separated from the jack 17, and then , push the framework 11 forward, so that the framework 11 and the bottom frame 14 use the pivot joints with the pole 16 as fulcrums respectively, and fold each other close, so that the framework 11 can be stacked on the top surface of the bottom frame 14, And complete the collapsing.

Although the above-mentioned conventional stroller can reduce the overall volume of the stroller 10 when it is folded, it still has the following disadvantages when used.

When the trolley 10 is folded, the frame 11 is stacked on the top surface of the chassis 14. After the cart is folded, although the overall upper and lower space can be reduced, the stacked frame 11 extends forward. And lengthen the folding length of this trolley 10, and make this trolley 10 still can't reduce storage space when storing, therefore, be difficult for being accommodated in the car trunk of various sizes.

The purpose of the utility model is to provide a three-wheeled trolley with a folding device that can reduce the occupied space after being folded and is easy to store.

The utility model provides a three-wheel trolley with a folding device, which comprises a front frame, a rear frame, a storage basket and a push handle. , characterized by:

A connecting block is respectively fixed on the top of the front frame, and a pivot hole is respectively arranged on both sides of the connecting block, and a cross bar is connected and fixed on the inner side of the middle section of the front frame;

The rear frame is fixed with two support rods at both ends of the rear wheel frame tube, and the upper ends of the two support rods are respectively fixed with a pivot ear that can be pivotally arranged on the connecting block of the front frame. The upper end is bent backwards to form an extension;

The storage basket is composed of two U-shaped front and rear rack tubes connected by two pivotal blocks. The lower side of the block is provided with an engaging groove for the end section of the rear frame tube to be engaged. respectively pivoted on two support rods on both sides of the rear frame;

The ends on both sides of the push handle cooperate with the connecting blocks of the front frame respectively to form a combined body, and a pivot ear pivotally arranged on the connecting block of the front frame is provided on the side of the combined body, and the two sides of the push handle are respectively sleeved A fixed hook that can respectively hold the extensions of the rear frame.

The described three-wheeled trolley with a retractable device is characterized in that:

The rear frame tube of the storage basket is pivotally arranged inside the two support rods at the middle section, and the rear frame tube protrudes from the rear frame to form a stepping part.

The described three-wheeled trolley with a retractable device is characterized in that:

The end of the front frame tube of the storage basket is inserted and fixed on the upper side of the pivot block.

The utility model has a three-wheeled trolley with a folding device, which comprises a front frame, a rear frame, a storage basket and a push handle. The front frame and the push handle are combined with a seat cover, and a sunshade cover is installed at the middle section of the push handle. It is characterized in that: the top of the front frame is respectively fixed with a connecting block. Each side is provided with a pivot hole, and the middle part of the front frame is connected with a cross bar on the inner side, and the cross bar is tilted upward to fix a pedal. Support rods, the upper ends of the two support rods are respectively fixed with a pivot ear that can be pivotally arranged on the connecting block of the front frame, and the upper ends of the two support rods are bent backward at a predetermined angle to form an extension of an appropriate length section, the storage basket is composed of two U-shaped front and rear rack tubes connected by two pivotal blocks, the end of the rear rack tube is pivotally connected to the lower side of the pivotal block, and the pivotal joint An engaging groove is provided on the lower side of the block for engaging the end section of the rear frame pipe. Pivoted on the two support rods on both sides of the rear frame, the ends on both sides of the push handle cooperate with the connecting blocks of the front frame to form a combined body, and a joint is arranged on the side of the combined body pivotally mounted on the front frame. The pivot ear on the connecting body and the two sides of the push handle are respectively sleeved with a fixed hook. When the push handle is deployed and integrated with the front frame, the fixed hook can hold the extension of the rear frame respectively.

In summary, the three-wheeled trolley of the present utility model is to make the front frame 20, the rear frame 30 and the push handle 50 overlap each other when it is folded, so that the total length is reduced, and it is more compact than the general trolley 10. The volume can be effectively reduced, so that the three-wheeled trolley can be stored at home or in a car according to needs without occupying too much space, and the convenience and practicality of use can be improved.

The following is a detailed description of the three-wheeled trolley with the folding device of the present invention through the best embodiment and accompanying drawings. In the accompanying drawings:

FIG. 1 is a schematic perspective view of a conventional trolley.

Fig. 2 is a combined schematic view of the positioning seat in the conventional trolley.

Fig. 3 is a schematic diagram of folding the trolley in the past.

Fig. 4 is a combined perspective view of a better embodiment of the utility model.

Fig. 5 is a three-dimensional exploded view of a better embodiment of the utility model.

Fig. 6 is a schematic diagram of the movement of the storage basket of the preferred embodiment of the utility model to stretch the front and rear frames.

Fig. 7 is a schematic diagram of the action of turning the push handle upwards in the preferred embodiment of the present invention.

Fig. 8 is a schematic side view of the folding action of the preferred embodiment of the present invention.

Fig. 9 is a schematic plan view of the push handle stacked on the top surface of the front frame in a better embodiment of the utility model.

Fig. 10 is a schematic diagram of folding of a better embodiment of the present invention.

As shown in Figures 4 and 5, the three-wheel handcart of the present invention comprises a front frame 20, a rear frame 30, a storage basket 40 and a push handle 50.

Front and rear wheels 21 and 31 are respectively pivotally provided at the ends of the front and rear frames 20 and 30, and a seat cover 60 is provided on the front frame 20 and the push handle 40, and the middle section of the push handle 40 is installed There is a sunshade 70, and the top of the front frame 20 is respectively fixed with a connecting block 22, and the two sides of the connecting block 22 are respectively provided with pivot holes 221, 222, and the inner side of the middle section of the front frame 20 is connected with a horizontal bar 23, and a slightly upwardly inclined pedal 80 is provided on the front frame 20 below the cross bar 23. The rear frame 30 is fixed with two support rods 33, 34 at the two ends of the rear wheel frame tube 32, and a pivot ear 331, 341 is respectively fixed at the upper ends of the two support rods 33, 34 for being pivotally arranged on the front. On the connecting block 22 of the vehicle frame 20 , the upper ends of the two support rods 33 , 34 are bent backward at a predetermined angle to form extension sections 332 , 342 of appropriate lengths.

The storage basket 40 is formed by two U-shaped front and rear rack tubes 41 and 42 connected by two pivotal blocks 43, and the ends of the rear rack tubes 42 are pivotally connected under the pivotal blocks 43. On the side, the lower side of the pivot block 43 is provided with an engaging groove 431 for the end section of the rear frame pipe 42 to engage, and the front frame pipe 41 is pivotally mounted on the front frame 20 by a pivot joint seat 44. The lower side of the cross bar 23 , and the rear frame tube 42 are respectively pivoted on the two support rods 33 , 34 on both sides of the rear frame 30 .

The ends on both sides of the push handle 50 cooperate with the connecting block 22 of the front frame 20 to form a combination body 51 respectively, and a pivot ear 511 pivotally arranged on the connecting block 22 of the front frame 20 is arranged on the side of the combination body 51. In addition, two fixing hooks 52 are sheathed on both sides of the push handle 50 , and the two fixing hooks 52 cooperate with the extension sections 332 , 342 of the supporting rods 33 , 34 to respectively define a fastening groove 521 .

As shown in Figure 6, when using the three-wheeled trolley of the present utility model, the front frame 20 and the rear frame 30 are reversely stretched, so that the front frame tube 41 and the rear frame tube 42 of the storage basket 40 are in the shape of Horizontal, and make the end section 421 of the rear frame pipe 42 engage in the engagement groove 431 of the pivot block 43, and then turn the push handle 50 upwards, as shown in Figure 7, so that the end of the push handle 50 The combined body 51 of the front frame 20 is against the connecting block 22 at the upper end of the front frame 20. At this time, the front frame 20 and the push handle 50 are in a straight line, and then the fastening groove 521 of the fixed hook 52 is hooked on the support. The extension sections 332 and 342 of the rods 33 and 34 can be assembled as shown in FIG. 4 .

On the contrary, when desiring to fold the three-wheeled trolley, as shown in Figures 8 and 9, only the fixing hook 52 and the extension sections 332, 342 need to be separated, so that the push handle 50 can be turned over and folded to the front wheel 21, and at the same time The rear frame tube 42 of the storage basket 40 can protrude from the stepped part 422 of the rear frame 30. At this time, due to the principle of leverage, the end section 421 of the rear frame tube 42 is upturned to break away from the pivot. 43, because the rear frame pipe 42 is pivotally connected with the pivot block 43, so the front frame pipe 41 can be driven upward, so that the front frame 20 and the rear frame 30 are moved inwardly. , finally forming the collapsed state as shown in Figure 10.

Claims (3)

1. A three-wheeled trolley with a folding device, comprising a front frame, a rear frame, a storage basket and a push handle, the ends of the front and rear frames are respectively pivotally equipped with front and rear wheels, and it is characterized in that : A connecting block is respectively fixed on the top of the front frame, and a pivot hole is respectively arranged on both sides of the connecting block, and a cross bar is connected and fixed on the inner side of the middle section of the front frame; The rear frame is fixed with two support rods at both ends of the rear wheel frame tube, and the upper ends of the two support rods are respectively fixed with a pivot ear that can be pivotally arranged on the connecting block of the front frame. The upper end is bent backwards to form an extension; The storage basket is composed of two U-shaped front and rear rack tubes connected by two pivotal blocks. The lower side of the block is provided with an engaging groove for the end section of the rear frame tube to be engaged. respectively pivoted on two support rods on both sides of the rear frame; The ends on both sides of the push handle cooperate with the connecting blocks of the front frame respectively to form a combined body, and a pivot ear pivotally arranged on the connecting block of the front frame is provided on the side of the combined body, and the two sides of the push handle are respectively sleeved A fixed hook that can hold the extensions of the rear frame respectively. 2. The three-wheeled trolley with folding device as claimed in claim 1, characterized in that: The rear frame tube of the storage basket is pivotally arranged inside the two support rods at the middle section, and the rear frame tube protrudes from the rear frame to form a stepping part. 3. The three-wheeled trolley with folding device as claimed in claim 1, characterized in that: The end of the front frame tube of the storage basket is inserted and fixed on the upper side of the pivot block.

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