CN105365875B - Children trolley - Google Patents

Abstract

The invention relates to a stroller for children. The stroller includes a vehicle frame, front wheels, rear wheels and a locking device arranged at the front portion below the vehicle frame. The vehicle frame includes a front wheel bracket, a rear wheel bracket and a push rod, the front wheel bracket is connected with the rear wheel bracket through a first sliding sleeve, the first sliding sleeve is rotatably arranged on the top of the front wheel bracket, and the rear wheel bracket is worn on the In the first sliding sleeve, the push rod is slidably arranged on the front wheel bracket, and the push rod is rotatably connected with the rear wheel bracket. The direction of the wheel is stretched; when the vehicle frame is in the folded state, the front wheel support and the rear wheel support move closer to each other, and the push rod shrinks toward the direction close to the front wheel. The entire stroller has fewer parts, the frame is simple, and the cost is low; the folding/unfolding of the entire stroller can be realized by pushing and pulling the push rod, with few steps and easy operation; after folding, the front wheel bracket, the rear wheel bracket and the push rod The rods are close together, occupying a small volume and easy to carry.

Description

stroller

technical field

The invention relates to a foldable stroller for children.

Background technique

At present, for the convenience of storage and transportation, children's strollers are often designed in a foldable style. In order to realize the foldable function, most of the existing foldable children's strollers have many components, complex structure, high cost, cumbersome folding, and multiple steps to complete. And because there are many parts, the space occupied by the folded baby stroller is relatively large.

Contents of the invention

The technical problem to be solved by the present invention is to provide a children's stroller with simple structure, simple vehicle frame and convenient folding.

In order to solve the above-mentioned technical problems, a technical solution adopted by the present invention is: a children's stroller, which includes a vehicle frame in an unfolded state and a folded state, a front wheel arranged at the front under the frame, and a rear wheel arranged at the bottom of the frame. rear wheels and a locking device for locking the frame in the unfolded/folded position. The vehicle frame includes a front wheel bracket, a rear wheel bracket, a push rod and a first sliding sleeve, the front wheel bracket includes a front wheel strut connected to the front wheel at the bottom and a connecting rod fixedly arranged on the top of the front wheel strut, The rear wheel is arranged at the bottom of the rear wheel bracket, the first sliding sleeve is rotatably arranged on the connecting rod, the connecting rod is connected with the rear wheel bracket through the first sliding sleeve, and the rear wheel bracket is passed through the first sliding sleeve and can slide in the first sliding sleeve, the push rod is slidably arranged on the front wheel bracket, and the push rod is rotatably connected with the rear wheel bracket. The wheel brackets support each other, and the push rods extend away from the front wheels; when the vehicle frame is in a folded state, the front wheel brackets and the rear wheel brackets approach each other, and the push rods shrink toward the direction of the front wheels.

Preferably, a second sliding sleeve is fixedly installed on the upper end of the front wheel strut, and the push rod is slidably passed through the second sliding sleeve.

Specifically, the connection between the push rod and the rear wheel bracket is lower than the position where the second sliding sleeve is located.

Specifically, when the locking device is unlocked, the push rod can slide along the extending direction of the front wheel strut.

Specifically, the front wheel bracket, the rear wheel bracket, the push rod and the first sliding sleeve form a crank slider mechanism. When the locking device is unlocked, the push rod slides to drive the rear wheel bracket to move. When the push rod moves toward the front The direction of the wheel slides, and the upper end of the rear wheel support draws closer to the front wheel; when the push rod slides away from the front wheel, the upper end of the rear wheel support is pulled up and moves away from the front wheel.

Preferably, the connecting rod is vertically intersected with the front wheel strut, and the first sliding sleeve is rotatably arranged at the end of the connecting rod away from the front wheel strut.

Preferably, the lower end of the push rod is rotatably connected to the upper end of the rear wheel bracket through a pin.

The orientation words such as front, rear, left, right, up, and down mentioned above are defined in the normal use orientation of the stroller.

The scope of the present invention is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the use of the above technical solutions, the present invention has the following advantages compared with the prior art: the vehicle frame only has a limited number of parts such as the front wheel bracket, the rear wheel bracket, the push rod, the first sliding sleeve, etc., and the parts of the whole children's stroller less, the frame is simple, and the cost is low; the front wheel bracket, the rear wheel bracket, the push rod, and the first sliding sleeve form a crank linkage mechanism, and the folding/unfolding of the entire stroller can be realized by pushing and pulling the push rod, with few steps and easy operation It is simple and easy; after folding, the front wheel bracket, rear wheel bracket and push rod are close together, occupying a small volume, and easy to carry and transport.

Description of drawings

Fig. 1 is the three-dimensional structural schematic diagram of the vehicle frame of the children's stroller in the unfolded state;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is a three-dimensional structural schematic diagram of the half-folded frame of the children's stroller of the present invention;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is a three-dimensional structural schematic view of the frame of the children's stroller in a folded state;

Fig. 6 is the right view of Fig. 5;

Among them: 1. Front wheel bracket; 2. Rear wheel bracket; 3. Push rod; 4. The first sliding sleeve; 5. Front wheel strut; 6. Connecting rod; 7. Front wheel; 8. Rear wheel; 9. Second slide.

detailed description

As shown in Figures 1 to 6, a children's stroller according to the present invention includes a vehicle frame in an unfolded state and a folded state, a front wheel 7 arranged at the front part under the vehicle frame, and a front wheel 7 arranged at the rear part under the vehicle frame The rear wheel 8 and the locking device for locking the frame in the unfolded/folded state. Described vehicle frame comprises front wheel support 1, rear wheel support 2 and push rod 3. The front wheel 7 is arranged on the bottom of the front wheel bracket 1, and the rear wheel 8 is arranged on the bottom of the rear wheel bracket 2.

The front wheel bracket 1 includes a front wheel strut 5 connected to the front wheel 7 at the bottom and a connecting rod 6 fixedly arranged on the top of the front wheel strut 5 , and the connecting rod 6 intersects the front wheel strut 5 perpendicularly. In this embodiment, the connecting rod 6 is welded and fixed on the front wheel strut 5 . The connecting rod 6 is connected with the rear wheel bracket 2 through the first sliding sleeve 4 , and the first sliding sleeve 4 is rotatably arranged at the end of the connecting rod 6 away from the front wheel strut 5 . The rear wheel bracket 2 is installed in the first sliding sleeve 4 and can slide in the first sliding sleeve 4 . The push rod 3 is slidably arranged on the front wheel bracket 1, and the lower end of the push rod 3 is rotationally connected with the upper end of the rear wheel bracket 2 through a pin. A second sliding sleeve 9 is fixedly installed on the upper end of the front wheel strut 5 , and the push rod 3 is slidably passed through the second sliding sleeve 9 . The joint between the push rod 3 and the rear wheel bracket 2 is lower than the position where the second sliding sleeve 9 is located. The front wheel support 1, the rear wheel support 2, the push rod 3 and the first sliding sleeve 4 form a slider crank mechanism.

When the vehicle frame is in the unfolded state, the front wheel bracket 1 and the rear wheel bracket 2 stand upright, and the push rod 3 stretches away from the front wheel 7; when the vehicle frame is in the folded state, the front wheel bracket 1 and the rear wheel bracket The wheel brackets 2 move closer to each other, and the push rod 3 shrinks toward the direction close to the front wheel 7 .

When the locking device is unlocked, the push rod 3 can slide along the extending direction of the front wheel strut 5 . The sliding of the push rod 3 drives the rear wheel support 2 to move, and when the push rod 3 slides toward the direction close to the front wheel 7, the upper end of the rear wheel support 2 moves closer to the front wheel 7; Sliding away from the direction of the front wheel 7, the upper end of the rear wheel support 2 is pulled up to move away from the direction of the front wheel 7.

When folding the child stroller in the expanded state, first unlock the locking device, then push the push rod 3 in the direction of the front wheel 7, the push rod 3 slides downward in the second sliding sleeve 9, the front wheel bracket 1, the rear wheel The bracket 2, the push rod 3 and the first sliding sleeve 4 form a crank slider mechanism to operate, the rear wheel bracket 2 moves closer to the front wheel under the drive of the push rod 3, and the angle between the rear wheel bracket 2 and the push rod 2 gradually becomes smaller , the push rod 3, the front wheel bracket 1 and the rear wheel bracket 2 move closer together, and the folding is completed so far.

When the child stroller in the folded state is unfolded, the motion of the whole frame is opposite to that of the folded state. First pull the push rod 3 upwards, the push rod 3 slides upwards along the extension direction of the front wheel strut 5, the rear wheel bracket 2 is also pulled up under the drive of the push rod 3, the push rod 3 and the rear wheel bracket 2 The angle between gradually increases until fully extended.

As can be seen from the above, the frame parts of the children's stroller of the present invention only have a limited number of front wheel brackets 1, rear wheel brackets 2, push rods 3, first sliding sleeves 4, second sliding sleeves 9, etc. The frame is simple, the structure is simple, and the cost is low. Moreover, the folding steps are simple, and can be folded in place in one step, which is convenient and easy. After being folded, since there are fewer parts, the folded ones are close to each other and are relatively compact, occupying little space and being easy to carry.

As mentioned above, we have fully described according to the purpose of the present invention, but the present invention is not limited to the above-mentioned embodiments and implementation methods. Practitioners in the relevant technical fields may make various changes and implementations within the scope permitted by the technical ideas of the present invention.

Claims (7)

1. A stroller for children, comprising a frame with an unfolded state and a folded state, a front wheel (7) arranged at the front under the frame, a rear wheel (8) arranged at the rear under the frame, and a The locking device for locking the vehicle frame in the unfolded/folded state is characterized in that the vehicle frame includes a front wheel bracket (1), a rear wheel bracket (2), a push rod (3) and a first sliding sleeve (4). The front wheel bracket (1) includes a front wheel strut (5) whose lower part is connected to the front wheel (7) and a connecting rod (6) fixedly arranged on the upper part of the front wheel strut (5), and the rear wheel (8) Set on the lower part of the rear wheel bracket (2), the first sliding sleeve (4) is rotatably installed on the connecting rod (6), and the connecting rod (6) and the rear wheel bracket (2) pass through the first sliding sleeve ( 4) Connection, the rear wheel bracket (2) is passed through the first sliding sleeve (4) and can slide in the first sliding sleeve (4), and the push rod (3) is slidably set on the front wheel bracket (1), the push rod (3) is rotatably connected with the rear wheel bracket (2). The rod (3) stretches away from the front wheel (7); when the frame is in the folded state, the front wheel bracket (1) and the rear wheel bracket (2) move closer to each other, and the push rod (3) moves toward the front The direction of the wheel (7) shrinks. 2. The children's stroller according to claim 1, characterized in that: the upper end of the front wheel strut (5) is fixedly equipped with a second sliding sleeve (9), and the push rod (3) slides It is installed in the second sliding sleeve (9). 3. The stroller for children according to claim 2, characterized in that: the connection between the push rod (3) and the rear wheel bracket (2) is lower than the position where the second sliding sleeve (9) is located. 4. The stroller for children according to claim 2, characterized in that: when the locking device is unlocked, the push rod (3) can slide along the extending direction of the front wheel strut (5). 5. The stroller according to claim 4, characterized in that: the front wheel bracket (1), the rear wheel bracket (2), the push rod (3) and the first sliding sleeve (4) form a crank slider mechanism, when the locking device is unlocked, the push rod (3) slides to drive the rear wheel bracket (2) to move, and when the push rod (3) slides toward the front wheel (7), the rear wheel bracket (2) ) moves closer to the front wheel (7); when the push rod (3) slides away from the front wheel (7), the upper end of the rear wheel bracket (2) is pulled up to move away from the front wheel (7) ) direction to move. 6. The children's stroller according to claim 1, characterized in that: the connecting rod (6) perpendicularly intersects with the front wheel strut (5), and the first sliding sleeve (4) is rotatably arranged on the connecting rod ( 6) The end of the strut (5) away from the front wheel. 7. The stroller for children according to claim 1, characterized in that: the lower end of the push rod (3) is rotatably connected to the upper end of the rear wheel bracket (2) through pins.