CN102009679B - Stroller - Google Patents

Abstract

A baby stroller, comprising a stroller frame with an unfolded position and a folded position, a wheel assembly arranged at the bottom of the stroller frame, a locking device for locking the stroller frame in the unfolded position, the stroller frame It includes side brackets located on the left and right sides, and a connecting frame connected between the side brackets on both sides. The side brackets on each side include a front wheel bracket, a connecting piece fixed on the upper end of the front wheel bracket, a lower end and a connecting frame. The push rod that is connected to the parts through the rotation shaft, the width of the projection of the push rod on the plane perpendicular to the axis of the rotation shaft is a, the distance from the center point of the rotation shaft to the upper side of the connecting part is b , a and The ratio of b is between 1 : 1-2 : 1 . During the transformation process of the cart frame from the folded position to the unfolded position, the push rod and the connecting piece will not pinch hands, so the use is safe, the structure is simple, and the manufacturing cost is low.

Description

a stroller

technical field

The invention relates to a baby stroller.

Background technique

A baby stroller in the prior art includes a stroller frame with an unfolded position and a folded position, a wheel assembly arranged at the bottom of the stroller frame, and used to lock the stroller frame The locking device in the unfolded position, the cart frame includes side brackets located on the left and right sides, and a connecting bracket connected between the side brackets on both sides, and the side brackets on each side include The front wheel bracket, the connector whose lower end is fixed on the upper end of the front wheel bracket, the push rod that is rotatably connected to the lower end of the lower end of the connector through a rotating shaft, and the length direction of the connector is approximately Extending along the length direction of the front wheel bracket, when the baby stroller is in the unfolded position, the lower part of the push rod is pressed against the upper part of the connecting piece, and when the baby stroller is in the folded position, An included angle is formed between the lower part of the push rod and the connecting part, and when the baby stroller is converted from the folded position to the unfolded position, the gap between the lower part of the push rod and the connecting part The included angle is getting smaller and smaller, so there is a hidden danger of pinching hands.

Contents of the invention

The technical problem to be solved by the present invention is to provide a baby stroller.

In order to solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a baby stroller, comprising a stroller frame with an unfolded position and a folded position, a wheel assembly arranged at the bottom of the stroller frame, A locking device for locking the cart frame at the unfolded position, the cart frame includes side brackets located on the left and right sides, and a connecting frame connected between the side brackets on both sides, each The side brackets on the side all include a front wheel bracket, a connecting piece fixed on the upper end of the front wheel bracket, a push rod whose lower end is rotatably connected to the connecting piece through a rotating shaft, and the push rod The width dimension of the projection on a plane perpendicular to the axis line of the rotating shaft is a, the distance from the center point of the rotating shaft to the upper side of the connecting piece is b, and the a and The ratio of b is between 1:1-2:1.

In some embodiments, the projection of the connecting piece on a plane perpendicular to the axis of the rotating shaft is elongated, and the lower end of the connecting piece is connected to the front wheel bracket The upper end of the connecting piece is fixedly connected with the lower end of the push rod through the rotating shaft.

In some embodiments, the connecting frame is a connecting frame capable of being folded laterally.

In some embodiments, the connecting element includes a rigid reinforcing element.

In some further embodiments, the reinforcement is U-shaped, the upper end of the front wheel bracket and the lower end of the push rod are respectively located in the U-shaped groove of the reinforcement, and the push rod The lower end of the front wheel bracket is close to the opening of the U-shaped groove of the reinforcement, and the upper end of the front wheel bracket is located at the bottom of the groove of the reinforcement.

In some still further embodiments, the reinforcements are iron reinforcements.

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 application of the above technical solutions, the present invention has the following advantages compared with the prior art: during the conversion process of the cart frame from the folded position to the unfolded position, the push rod and the connecting piece will not pinch hands, and the use of Safety, simple structure and low manufacturing cost.

Description of drawings

Accompanying drawing 1 is the perspective view of the present invention (embodiment one);

Accompanying drawing 2 is the front view of the present invention (embodiment one);

Accompanying drawing 3 is the M place enlarged view of accompanying drawing 2;

Accompanying drawing 4 is the perspective view of the present invention (embodiment two);

Accompanying drawing 5 is the perspective view of the present invention (embodiment three);

Accompanying drawing 6 is the perspective view of the present invention (embodiment 4);

Accompanying drawing 7 is the perspective view of the present invention (embodiment five);

Accompanying drawing 8 is the exploded view of right push rod, right front wheel bracket rotation joint.

Among them: 1. Cart frame; 2. Right positioning part; 3. Right shaft; 4. Right connecting part; 5. Left connecting part; 6. Rear support frame; 8. Bottom support frame; 11. Right front wheel bracket ;12, left front wheel support; 13, right push rod; 14, left push rod; 15, right rear wheel support; 16, left rear wheel support; 17, right seat bar; 18, left seat bar; 21, first Bar; 22, the second bar; 23, the third bar; 24, the fourth bar; 25, the right reinforcement.

Detailed ways

Embodiment 1: As shown in accompanying drawings 1-3, a baby stroller includes a stroller frame 1 with an unfolded position and a folded position, and a wheel assembly arranged at the bottom of the stroller frame 1 . A locking device for locking the cart frame 1 in the unfolded position.

The cart frame 1 includes side brackets and connecting brackets that are located at the left and right sides and respectively constitute the linkage mechanism. The side bracket is called the left side bracket, that is, the connecting frame is arranged between the right side bracket and the left side bracket, and the connecting frame includes a bottom bracket 8 and a rear bracket 6 .

Similarly, for convenience of explanation, "right" is added before the name of each part of the right side bracket, and "left" is added before the name of each part of the left side bracket.

As shown in accompanying drawing 1-accompanying drawing 3, namely described right side bracket comprises right front wheel bracket 11, the right connecting piece 4 that lower end is fixedly connected with described right front wheel bracket 11 through right positioning piece 2, The right push rod 13 whose lower end is rotatably connected to the upper end of the right connecting piece 4 through the right rotation shaft 3, the right push rod 13 is on a plane perpendicular to the axis line of the right rotation shaft 3 The width dimension of the projection is a, the distance from the center point of the right rotation axis 3 to the upper side of the right connecting piece 4 is b, and the ratio of a to b is 1:1-2 : between 1, the more the ratio of a to b tends to 1:1, the stronger the rigidity at the right rotation axis 3, in this embodiment, the ratio of a to b It is 1.12:1.

As shown in accompanying drawing 8, described right connecting piece 4 comprises the right reinforcing piece 25 that has rigid iron, and described right reinforcing piece 25 is U-shaped, and the upper end of described right front wheel support 11 is connected with the right side. The lower end of the push rod 13 is respectively located in the U-shaped groove of the right reinforcement 25, and the lower end of the right push rod 13 is close to the opening of the U-shaped groove of the right reinforcement 25. The upper end of the right front wheel bracket 11 is located at the bottom of the groove of the right reinforcement 25, and the right reinforcement 25 can be wrapped around the outside of the right connecting piece 4, or embedded in the The inner side of the right connector 4.

The right side support also includes a right rear wheel support 15 whose upper end is rotatably connected to the bottom of the right push rod 13, and a right seat post whose front part is rotatably connected to the right front wheel support 11. 17. The rear portion of the right seat post 17 is rotatably connected with the right rear wheel bracket 15.

The left side bracket includes a left front wheel bracket 12, a left connecting piece 5 whose lower part is fixedly connected with the left front wheel bracket 12 through a left positioning member, and a lower end and the upper part of the left connecting piece 5 through a left rotating shaft. The left push rod 14 connected in rotation, the left rear wheel bracket 16 connected in rotation with the lower part of the left push rod 14 at the upper end, and the left seat whose front part is connected in rotation with the left front wheel bracket 12 pole 18. The wheel assembly includes a right front wheel assembly, a left front wheel assembly, a right rear wheel assembly, and a left rear wheel assembly. The right front wheel assembly is arranged at the bottom of the right front wheel bracket 11, the left front wheel assembly is arranged at the bottom of the left front wheel bracket 12, and the right rear wheel assembly is arranged at the bottom of the left front wheel bracket 12. The bottom of the right rear wheel support 15 described above, the left rear wheel assembly is arranged on the bottom of the left rear wheel support 16.

Not shown, the left connector includes a rigid iron left reinforcement, the left reinforcement is U-shaped, the upper end of the left front wheel bracket 12 and the lower end of the left push rod 14 respectively located in the U-shaped groove of the left reinforcement, the lower end of the left push rod 14 is close to the opening of the U-shaped groove of the left reinforcement, and the upper end of the left front wheel bracket 12 Located at the bottom of the groove of the left reinforcing piece, the left reinforcing piece can be wrapped around the outside of the left connecting piece, or can be embedded inside the left connecting piece.

The structure of the left connector 5 is the same as that of the right connector 4 . The left side support and the right side support are symmetrically arranged on both sides of the stroller frame 1 .

The said rear bracket 6 is formed by crossing the third rod 23 and the fourth rod 24 and being connected in rotation at the intersection. The upper end of the third rod 23 is connected to the right The upper part of the push rod 13 is arranged to rotate through the first upper rotating joint, and the lower end of the third rod 23 and the left rear wheel bracket 16 are arranged to rotate through the fourth upper rotating joint. The upper end of the fourth rod 24 and the upper part of the left push rod 14 are arranged to rotate through the second upper rotary joint, and the lower end of the fourth rod 24 and the right rear wheel bracket 15 pass through The third upper revolving joint is rotatably arranged;

The bottom bracket 8 is formed by intersecting the first rod 21 and the second rod 22 and being connected in rotation at the intersection. The front end of the first rod 21 is connected to the right front The lower part of the wheel bracket 11 is set to rotate through the first lower rotation joint, and the rear end of the first rod 21 and the left rear wheel bracket 16 are set to rotate through the fourth lower rotation joint. The front end of the second rod 22 and the bottom of the left front wheel bracket 12 are arranged to rotate through the second lower rotation joint, and the rear end of the second rod 22 is connected to the right rear wheel The bracket 15 is rotatably arranged via the third lower swivel joint.

Embodiment 2: As shown in accompanying drawing 4, the difference from Embodiment 1 is that the frame of the cart frame 1 is different, and the cart frame 1 does not include the right rear wheel support 15 and the left rear wheel support 16 , the rear portion of the left seat post 18 is rotatably connected to the bottom of the third bar member 23, and the rear portion of the first bar member 21 is connected to the rear portion of the left seat post 18. Rotating connection, the rear part of the right seat post 17 is connected to the bottom of the fourth bar 24, the rear part of the second bar 22 is connected to the right seat post 17 The rear parts are connected in rotation, the right rear wheel assembly is arranged under the fourth rod 24 , and the left rear wheel assembly is arranged under the third rod 23 .

Embodiment 3: As shown in accompanying drawing 5, the difference from Embodiment 1 is that the frame of the cart frame 1 is different, and the cart frame 1 does not include the right rear wheel support 15 and the left rear wheel support 16 , the rear part of the left seat post 18 is connected in rotation with the rear part of the first rod 21, and the lower part of the third rod 23 is connected in rotation with the rear part of the left seat post 18 , the rear portion of the right seat post 17 is rotationally connected to the rear portion of the second rod 22, and the bottom of the fourth rod 24 is connected to the rear portion of the right seat post 17. In connection with rotation, the right rear wheel assembly is arranged under the second rod 22 , and the left rear wheel assembly is arranged under the first rod 21 .

Embodiment 4: As shown in accompanying drawing 6, the difference from Embodiment 1 is that the frame of the cart frame 1 is different, and the cart frame 1 does not include the right rear wheel support 15 and the left rear wheel support 16 , the rear portion of the left seat post 18 is rotatably connected to the bottom of the third bar member 23, and the rear portion of the first bar member 21 is connected to the rear portion of the left seat post 18. Rotating connection, the rear part of the right seat post 17 is connected to the bottom of the fourth bar 24, the rear part of the second bar 22 is connected to the right seat post 17 The rear part is connected in rotation, the right rear wheel assembly is arranged under the right seat post 17, and the left rear wheel assembly is arranged under the left seat post 18.

Embodiment 5: As shown in Figure 7, the difference from Embodiment 1 is that the cart frame 1 also includes a foldable cross brace, and an outer end of the cross brace passes through the first The rotating shaft is rotatably connected with the right rear wheel support 15, and the other outer end of the cross brace is rotatably connected with the left rear wheel support 16 through the second rotating shaft.

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 (4)

1. A baby stroller, comprising a stroller frame (1) with an unfolded position and a folded position, a wheel assembly arranged at the bottom of the stroller frame (1), and used to push the stroller The locking device that locks the frame (1) in the unfolded position, the cart frame (1) includes side brackets located on the left and right sides, and a connecting frame connected between the side brackets on both sides, each The side brackets on the side all include a front wheel bracket, a connecting piece fixed on the upper end of the front wheel bracket, a push rod whose lower end is rotatably connected to the connecting piece through a rotating shaft, and is characterized in that: The width dimension of the projection of the push rod on a plane perpendicular to the axis of the rotating shaft is a, and the distance from the center point of the rotating shaft to the upper side of the connecting piece is b, so The ratio of said a to said b is between 1:1-2:1, said connecting piece includes a rigid reinforcing piece, said reinforcing piece is U-shaped, and the upper end of said front wheel bracket The lower end of the push rod and the lower end of the push rod are respectively located in the U-shaped groove of the reinforcement, the lower end of the push rod is close to the opening of the U-shaped groove of the reinforcement, and the upper end of the front wheel bracket The part is located at the bottom of the groove of the reinforcing member. 2. A stroller according to claim 1, characterized in that: the projection of the connecting member on a plane perpendicular to the axis of the rotating shaft is elongated, and the The lower end of the connecting piece is fixedly connected with the upper end of the front wheel bracket, and the upper end of the connecting piece is rotatably connected with the lower end of the push rod through the rotating shaft. 3. The baby stroller according to claim 1, wherein the connecting frame is a connecting frame capable of being folded horizontally. 4. A stroller according to claim 1, characterized in that: said reinforcement is an iron reinforcement.

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