CN202716918U - A foldable infant trolley - Google Patents

Abstract

The utility model discloses a folding infant handcart, its front foot pipe articulates respectively in the front portion of seat frame both sides, back foot pipe articulates respectively in the rear portion of seat frame both sides, the upper end of front foot pipe, the upper end of back foot pipe and the front end of handrail are articulated each other through the connecting axle, the rear end of handrail is articulated with pushing handle pipe, the lower extreme of pushing handle pipe and back foot pipe are articulated each other through a connecting piece, be equipped with folding mechanism on pushing handle pipe and back foot pipe, when folding mechanism opened, front foot pipe, handrail, push handle pipe and seat frame formed a four-bar linkage, four-bar linkage can nimble folding or expand, make the folding flexibility of whole car reinforcing, convenience of customers uses; when the whole vehicle is unfolded and the folding mechanism is locked, the lower end of the push handle pipe is fixedly connected with the rear foot pipe, a fixed triangular structure is formed among the armrests, the rear foot pipe and the push handle pipe, and the triangular structure has stability and can enhance the stability of the whole vehicle.

Description

A foldable infant trolley

technical field

The utility model relates to an infant trolley, in particular to a foldable infant trolley.

Background technique

There are many types of infant strollers on the market today, among which the foldable strollers can be converted into an unfolded state or a folded state, and folded strollers can save space for storage and are easy to carry, so they are very popular. Folding trolleys generally include a cart frame, front wheel assembly, rear wheel assembly, armrests and a seat frame arranged on the cart frame. The armrests are generally arranged on both sides of the seat frame. And the push handle tube, the front leg tube, the rear leg tube and the seat frame are connected to each other, and the push handle tube is connected to the rear leg tube. When pushing the cart, the hand pushes the push handle tube to push the trolley to move. Strong, the body is prone to front and rear, left and right shaking, which affects the comfort of infants and young children; and because the push handle tube is connected to the rear leg tube, when the push handle tube is pushed by hand, all the force acting on the push handle tube is applied to the rear leg tube On the other hand, if the rear leg tube is under too much force, it is easy to break.

Therefore, how to enhance the stability of the foldable trolley in the unfolded state is a technical problem to be solved urgently in the industry.

Contents of the invention

The main purpose of the utility model is to provide a foldable trolley, which aims to enhance the stability of the foldable trolley in the unfolded state, enhance the flexibility of folding the whole vehicle, and facilitate the use of the user.

The utility model proposes a foldable trolley for infants and young children, which includes a foldable vehicle frame, a front wheel assembly and a rear wheel assembly installed at the bottom of the vehicle frame, and a seat frame arranged on the vehicle frame, and the vehicle frame includes The front leg tube connected with the front wheel assembly, the rear leg tube connected with the rear wheel assembly, the push handle tube for the cart and the armrests arranged on both sides of the seat frame, the front leg tubes are respectively hinged on the The front parts on both sides of the seat frame, the rear leg tubes are respectively hinged at the rear parts on both sides of the seat frame, the upper ends of the front leg tubes, the upper ends of the rear leg tubes and the front ends of the handrails are hinged to each other through connecting shafts , the rear end of the armrest is hinged to the push handle tube, the lower end of the push handle tube is hinged to the rear leg tube through a connecting piece, the front leg tube, the armrest, the push handle tube and the A four-bar linkage mechanism is formed between the seat frames; a folding mechanism is provided on the push handle tube and the rear leg tube, and when the folding mechanism is locked, the lower end of the push handle tube is fixedly connected to the rear leg tube , A fixed triangular structure is formed between the armrest, the rear leg tube and the push handle tube.

Preferably, the folding mechanism includes a card base, a fixed pin adapted to the card base, and a folding handle for driving the fixed pin into or out of the card base, and the card base is arranged on the On the rear leg tube, the folding handle and the fixing bolt are arranged on the push handle tube, the fixing bolt is arranged at the lower end of the push handle pipe, and the folding handle is arranged above the fixing bolt.

Preferably, one end of the connecting piece is hinged with the push handle tube, and the other end of the connecting piece is hinged at a position on the rear leg tube where it is hinged with the seat frame.

Preferably, the seat frame includes a seatpost, a backrest post and a footboard, the seatpost is configured as a "#" structure, the footboard is hinged to the front end of the seatpost, and the footboard A locking mechanism for fixing the position of the pedal is provided at the hinge with the seat post.

The front leg tubes of the utility model folding infant trolley are respectively hinged at the front parts of both sides of the seat frame, and the rear leg tubes are respectively hinged at the rear parts of both sides of the seat frame. Hinged, the rear end of the armrest is hinged with the push handle tube, the lower end of the push handle tube and the rear leg tube are hinged to each other through a connecting piece, and a folding mechanism is provided on the push handle tube and the rear leg tube. When the folding mechanism is opened, the front leg tube, handrail, A four-bar linkage mechanism is formed between the push handle tube and the seat frame, so that the front leg tube, the armrest, the push handle tube and the seat frame can be flexibly folded or unfolded, and are not easy to wear and tear, which enhances the flexibility of the folding of the whole vehicle. It is convenient for users to use; when the whole vehicle is unfolded and the folding mechanism is locked, the lower end of the push handle tube is fixedly connected with the rear leg tube, and a fixed triangular structure is formed between the armrest, rear leg tube and push handle tube. The triangular structure has stability and can enhance the overall The stability of the car, so that in the process of pushing the car, the body is not easy to shake back and forth, left and right, so that the comfort of infants and young children in the car is enhanced.

Description of drawings

Fig. 1 is the right side view when an embodiment of the utility model foldable infant trolley is unfolded;

Figure 2 is a perspective view of an embodiment of the utility model foldable infant trolley when it is unfolded;

Fig. 3 is the perspective view of the seat frame in an embodiment of the utility model foldable infant trolley;

Fig. 4 is a right view of the seat frame when the foot pedal is adjusted to be parallel to the seatpost in an embodiment of the utility model folding infant trolley;

Fig. 5 is a right view of the seat frame when the pedal is adjusted to be perpendicular to the seat post in an embodiment of the utility model folding infant trolley;

Fig. 6 is a perspective view of the foldable infant trolley in one embodiment of the utility model when the handle of the folded vehicle is parallel to the push handle tube;

Fig. 7 is a perspective view of the foldable infant trolley in one embodiment of the present invention when the handle of the folded cart is perpendicular to the push handle tube.

The realization of the purpose of the utility model, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

With reference to Fig. 1 to Fig. 7, propose an embodiment of the foldable infant trolley of the present utility model, mainly comprise a foldable vehicle frame, be installed in the front wheel assembly 100 of vehicle frame bottom and rear wheel assembly 200, be arranged on the cart Mount the seat frame 40; the frame includes a front leg tube 10 connected to the front wheel assembly 100, a rear leg tube 20 connected to the rear wheel assembly 200, a push handle tube 30 for a stroller and handrails 50 arranged on both sides of the seat frame 40; Front leg tube 10 is respectively hinged at the front part of seat frame 40 both sides, rear leg tube 20 is respectively hinged at the rear part of seat frame 40 both sides, forms a triangular structure between front leg tube 10, rear leg tube 20 and the ground, makes vehicle body stable. The upper end of the front leg tube 10, the upper end of the rear leg tube 20, and the front end of the armrest 50 are hinged to each other through a connecting shaft, the rear end of the armrest 50 is hinged to the push handle tube 30, and the lower end of the push handle tube 30 is hinged to the rear leg tube 20 through a connecting piece. , one end of the connecting piece is hinged with the push handle tube 30, and the other end of the connecting piece is hinged at the position where the rear leg tube 20 is hinged with the seat frame 40, so that the front leg tube 10, the armrest 50, the push handle tube 30 and the seat frame 40 are hinged. A four-bar linkage mechanism is formed between them. There is a folding mechanism on the push handle tube 30 and the rear leg tube 20. When the folding mechanism is opened, the four-bar linkage mechanism formed by the front leg tube 10, the armrest 50, the push handle tube 30 and the seat frame 40 can be flexibly folded or unfolded, and it is not easy to wear and tear, the flexibility of folding the whole vehicle is enhanced, and the user is convenient to use; Form a fixed triangular structure.

The folding mechanism includes a card base 201, a fixed pin adapted to the card base 201, and a folding handle 300 for driving the fixed pin to snap into or pull out the card base 201. The latch is arranged on the push handle pipe 30 , the fixed latch is arranged at the lower end of the push handle pipe 30 , and the folding handle 300 is arranged above the fixed latch. When the handcart was in the unfolded state, the fixed latch was inserted into the deck 201 and clamped tightly, the lower end of the push handle pipe 30 was fixedly connected with the rear leg pipe 20, the armrest 50, the rear leg pipe 20 and the push handle pipe 30 formed a fixed triangular structure, and the triangular structure had Stability can enhance the stability of the whole vehicle, so that in the process of pushing the cart, the body is not easy to shake back and forth, left and right, so that the comfort of infants and young children when riding in the car is enhanced. And because the push handle pipe 30 is hinged with the rear leg pipe 20 and the armrest 50 respectively, in the process of pushing the cart, the power acting on the push handle pipe 30 will be applied to the rear leg pipe 20 and the armrest 50 respectively, and the armrest 50 will decompose partly from Pushing the force exerted by the handle tube 30 reduces the stress on the rear leg tube 20, thereby reducing the possibility of the rear leg tube 20 breaking due to excessive force, making it more durable.

When the whole vehicle needs to be folded, lift the folding handle 300 upwards with both hands to disengage the fixing pin from the card seat 201, and then push the push handle 30 forward so that the front leg tube 10 and the rear leg tube 20 are automatically folded inward until they are close to each other. The folding operation of the whole vehicle is flexible and convenient. In actual use, the probability of failure is small, and it is safe and practical. The entire folding mechanism requires fewer parts, the processing technology of each part is simple, the matching precision is not high, the manufacturing cost is low, and it is easy to maintain, and is suitable for mass production. When the vehicle frame is folded into a folded state, the front end of the armrest 50 hangs upwards and the rear end hangs down, and the front leg tube 10 connected to the front end of the armrest 50 hangs down naturally, forming a small angle with the rear leg tube 20. The front leg tube 10 and the rear leg The pipe 20 and the ground form a triangle; the push handle pipe 30 detached from the deck 201 hangs down and fits with the rear leg pipe 20. The volume of the whole vehicle is very small after being folded, which is convenient for carrying and storing when not in use. And after the whole vehicle is folded, the front leg tube 10, the rear leg tube 20, and the ground form a triangle, so that the whole vehicle can stand after being folded, thereby reducing the floor space during storage as much as possible.

In order to facilitate the movement of the whole vehicle after being folded, a handle bending structure is provided on the upper end of the push handle pipe 30. The handle bending structure includes a handle 600 and a hinged structure 60, and the hinged structure 60 hinges the handle 600 on the The upper end of the push handle pipe 30, and the handle 600 can be adjusted in three stages: 1. Rotate upward to adjust to be parallel to the push handle pipe 30, which is convenient for lifting and placing the folded vehicle; 2. Turn downward to adjust to be in line with the push handle pipe 30 in parallel, as shown in Figure 6, fits with the push handle tube, which is convenient for storing the folded vehicle; 3, rotates and adjusts to be perpendicular to the push handle tube 30, as shown in Figure 7, facilitates push and pull of the folded vehicle The car makes the movement of the folded car more convenient.

The seat frame 40 includes a seat post 400, a back bar 401 and a pedal 402. The seat post 400 is configured as a "#" structure, which makes the seat frame 40 more stable and firm. The pedal 402 is hinged with the front end of the seatpost 400, and a locking mechanism for fixing the position of the pedal 402 is provided at the hinge of the pedal 402 and the seatpost 400. Through the locking mechanism, the pedal 402 can be adjusted to be in line with the seat Locking occurs when the stem 400 is parallel or adjusted to be perpendicular to the seatpost 400 . When the baby sits on the seatpost 400, the footrest 402 can be adjusted to be perpendicular to the seatpost 400, which can prevent the child's calf from being tired due to long-term placement; when the baby needs to lie flat, the footrest 402 can be adjusted to be perpendicular to the seatpost 400 parallel, thus increasing the length of the seat to ensure the comfort of the baby lying flat.

The upper position of the push handle pipe 30 is provided with a canopy, which can be used for sunshade, wind and rain protection. The canopy is provided with an adjustment device, which can be adjusted within 180 degrees and is suitable for various occasions. There is a dining table 500 connected to the front ends of the armrests 50 on both sides, which can be used for eating by infants sitting on the trolley, which is very practical.

The above are only preferred embodiments of the present utility model, and are not therefore limiting the patent scope of the present utility model. All equivalent structural transformations made by using the utility model specification and accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (4)

1. A foldable infant trolley, comprising a foldable vehicle frame, a front wheel assembly and a rear wheel assembly installed at the bottom of the vehicle frame, a seat frame arranged on the vehicle frame, and the vehicle frame includes a The front leg tube connected to the front wheel assembly, the rear leg tube connected to the rear wheel assembly, the push handle tube for the cart, and the armrests arranged on both sides of the seat frame, the front leg tubes are respectively hinged on the seat The front parts on both sides of the frame, the rear leg tubes are respectively hinged at the rear parts on both sides of the seat frame, and it is characterized in that the upper ends of the front leg tubes, the upper ends of the rear leg tubes and the front ends of the armrests are connected through the connecting shaft are hinged to each other, the rear end of the armrest is hinged to the push handle tube, the lower end of the push handle tube is hinged to the rear leg tube through a connecting piece, the front leg tube, the armrest, and the push handle tube A four-bar linkage mechanism is formed between the seat frame; a folding mechanism is provided on the push handle tube and the rear leg tube, and when the folding mechanism is locked, the lower end of the push handle tube and the rear leg tube Fixedly connected, a fixed triangular structure is formed between the armrest, the rear leg tube and the push handle tube. 2. The foldable infant trolley according to claim 1, wherein the folding mechanism comprises a card base, a fixed pin adapted to the card base, and is used to drive the fixed pin to snap in or out The folding handle of the deck, the deck is set on the rear leg tube, the folding handle and the fixing pin are set on the push handle tube, and the fixing pin is set on the push handle tube At the lower end, the folding handle is arranged above the fixed bolt. 3. The foldable infant trolley according to claim 1, wherein one end of the connecting piece is hinged to the push handle tube, and the other end of the connecting piece is hinged to the rear leg tube and the Where the mounts are hinged. 4. The foldable infant trolley according to claim 1, 2 or 3, wherein the seat frame comprises a seatpost, a backrest post and a pedal, and the seatpost is set as a "#" type structure, The pedal is hinged to the front end of the seatpost, and a locking mechanism for fixing the position of the pedal is provided at the hinge of the pedal and the seatpost.

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