CN113276932A

CN113276932A - Children's barrow

Info

Publication number: CN113276932A
Application number: CN202110365818.3A
Authority: CN
Inventors: 马福生
Original assignee: Goodbaby Child Products Co Ltd
Current assignee: Goodbaby Child Products Co Ltd
Priority date: 2020-05-09
Filing date: 2021-04-06
Publication date: 2021-08-20
Also published as: CN215322814U

Abstract

The invention discloses a children's cart, which comprises a cart frame, a wheel assembly and a brake mechanism with braking and braking states, wherein the cart frame comprises a push rod assembly and a push handle arranged on the push rod assembly in a sliding mode, the children's cart further comprises a driving mechanism, the driving mechanism comprises a driving piece and a flexible connecting piece, the driving piece and the flexible connecting piece are arranged on the push handle, one end of the flexible connecting piece is connected with the brake mechanism, when the push handle slides relative to the push rod assembly, the driving piece is driven to synchronously slide relative to the push rod assembly, the flexible connecting piece passes around the driving piece and is positioned on a sliding path of the driving piece, or the other end of the flexible connecting piece is arranged on the driving piece, and the flexible connecting piece moves along with the sliding of the driving piece. When the hand grips the push handle, the brake mechanism brakes to prevent the stroller from advancing, so that the accident that the stroller is out of control is avoided.

Description

Children's barrow

Technical Field

The invention relates to the technical field of children products, in particular to a stroller.

Background

The child stroller provides great convenience for adults to carry small children for outdoor activities, so that the child stroller gradually becomes a necessity for adults to carry children for outdoor activities, and therefore, the safety problem of the child stroller in use must be considered.

In order to improve the safety performance of the stroller during use, the stroller is generally provided with a brake mechanism. The brake mechanisms of the existing stroller in the market are generally of a manual type or an electronic induction type, for the manual type brake mechanism, when the stroller stops moving, the brake mechanism needs to be operated additionally to lock the wheel assembly, and when a household forgets to operate the brake mechanism due to negligence, the stroller has the risk of being out of control; for the electronic induction type brake mechanism, parents need to check whether the battery power and the circuit function are normal before using, otherwise, the situation that the circuit is powered off to cause the abnormal function of the brake mechanism may occur in the using process, and the baby stroller also has the risk of being out of control. Therefore, no matter the manual or electronic induction type brake mechanism is adopted, the child stroller has certain potential safety hazards.

Disclosure of Invention

The object of the present invention is to address the deficiencies of the prior art by providing an improved stroller.

In order to achieve the purpose, the invention adopts the technical scheme that:

a baby stroller comprises a stroller frame, a wheel assembly arranged at the bottom of the stroller frame and a brake mechanism used for braking the wheel assembly to prevent the baby stroller from advancing, the brake mechanism has brake and brake states, the stroller frame comprises a push rod assembly and a push handle used for being held by a human hand when the baby stroller is pushed, the push handle can be arranged on the push rod assembly in a vertical sliding manner, the baby stroller further comprises a driving mechanism used for driving the brake mechanism to be switched between the brake state and the brake state, the driving mechanism comprises a driving piece and a flexible connecting piece, the driving piece and the flexible connecting piece are arranged on the push handle, one end of the flexible connecting piece is connected with the brake mechanism, the flexible connecting piece passes around the driving piece and is positioned on a sliding path of the driving piece, or the other end of the flexible connecting piece is arranged on the driving piece, when the hand leaves the push handle, the brake mechanism is in a brake state, when the hand grips the push handle to push the baby stroller, the push handle slides relative to the push rod assembly to drive the driving piece to synchronously slide relative to the push rod assembly, and the flexible connecting piece moves along with the sliding of the driving piece to drive the brake mechanism to be in a brake release state.

Preferably, when the stroller is pushed, the push handle slides downwards relative to the push rod assembly, the driving member is a first pulley which can be rotatably arranged on the push handle, and the other end of the flexible connecting member is fixedly arranged on the push rod assembly after passing under the first pulley.

Preferably, the driving mechanism further comprises a second pulley rotatably disposed in the push rod assembly, and the flexible connecting member is wound around the second pulley from above the second pulley.

Furthermore, the driving piece is a first pulley which can be rotatably arranged on the pushing handle, and the second pulleys are respectively arranged on the left side and the right side of the first pulley.

Furthermore, the first pulley and the second pulleys on the left and right sides of the first pulley form a group of pulley assemblies together, and the driving mechanism comprises a plurality of groups of the pulley assemblies arranged at intervals.

Preferably, the stroller further comprises an upper limiting structure for limiting the upward sliding of the push handle, the upper limiting structure comprises a convex part fixedly arranged on the push handle and a groove fixedly arranged on the push rod assembly and matched with the convex part, the groove extends along the up-down direction, and the convex part is positioned in the groove.

Preferably, the push rod assembly is provided with a containing groove extending in the up-down direction, the containing groove is matched with the driving piece, and the driving piece is located in the containing groove and can be arranged in a sliding manner relative to the containing groove.

Preferably, the driving mechanism further comprises an elastic member for driving the brake mechanism to switch from the brake release state to the brake state, and two end portions of the elastic member are respectively arranged on the brake mechanism and the cart frame.

Preferably, push away and extend along left right direction, push away and have opening U type groove down, push rod assembly includes along the horizontal pole that extends of left right direction, the horizontal pole is located push away the U type groove of handle, work as when brake mechanism is in the brake state, the tank bottom in U type groove with an interval distance between the up end of horizontal pole, work as when brake mechanism is in the state of separating the brake, the tank bottom in U type groove with the up end counterbalance of horizontal pole is established.

Preferably, the push rod assembly comprises a vertical rod extending obliquely upwards from the front to the back and a cross rod extending along the left-right direction, the push handle extends along the left-right direction, the push handle is located above the cross rod, and the length of the push handle is at least two thirds of the length of the cross rod.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the stroller has a simple structure, when the push handle is not held by a hand, the brake mechanism brakes to prevent the stroller from advancing, so that the accident that the stroller is out of control is avoided, the safety performance of the stroller during use is greatly improved, when the push handle is held by the hand to push the stroller, the push handle slides downwards relative to the push rod assembly to drive the driving piece to synchronously move downwards, the brake mechanism is pulled through the flexible connecting piece to brake, the stroller can move forwards or backwards at will, and the stroller is very convenient to use.

Wherein: 1. a cart frame; 11. a push handle; 111. a convex portion; 121. a cross bar; 121a, a containing groove; 122. a vertical rod; 122a, slotting; 21. a front wheel assembly; 22. a rear wheel assembly; 31 a brake block; 32. a rotating member; 33. a rotating shaft; 41. a first pulley; 42. a flexible connector; 5. a second pulley; 6. an elastic member.

Drawings

FIG. 1 is a schematic structural view of the stroller of the present invention;

FIG. 2 is a schematic structural view of a handle portion of the stroller of the present invention (the brake mechanism is in a braking state);

FIG. 3 is a schematic structural view of a wheel assembly portion of the stroller of the present invention (the brake mechanism is in a braking state);

FIG. 4 is a schematic structural view of a handle portion of the stroller of the present invention (the brake mechanism is in an unlocked state);

FIG. 5 is a schematic structural view of a wheel assembly of the stroller of the present invention (the brake mechanism is in an unlocked state);

fig. 6 is an exploded view of the push handle portion of the stroller of the present invention.

Detailed Description

The technical solution of the present invention is further explained with reference to the drawings and the specific embodiments.

As shown in fig. 1, the stroller of the present invention includes a stroller frame 1, a wheel assembly provided at the bottom of the stroller frame 1, and a brake mechanism for braking the wheel assembly to prevent the stroller from traveling.

The stroller frame 1 comprises a push rod assembly and a push handle 11 for being held by a hand of a person when the stroller is pushed, and the push handle 11 is arranged on the push rod assembly in a vertically sliding manner.

The push rod assembly includes a cross bar 121 extending in the left-right direction and vertical bars 122 located at both left and right ends of the cross bar 121 and extending obliquely upward from front to back. The push handle 11 extends in the left-right direction, the push handle 11 is located above the cross rod 121, and the length of the push handle 11 is at least two thirds of the length of the cross rod 121.

In this embodiment, the handle 11 has a U-shaped groove with an opening inclined downward. The cross bar 121 is located in the U-shaped groove of the handle 11 and is slidably disposed relative to the same.

The wheel assembly includes a front wheel assembly 21 and a rear wheel assembly 22, and in this embodiment, the brake mechanism has a braking state in which it cooperates with the rear wheel assembly 22 to prevent travel of the rear wheel assembly 22 and an unlocked state in which it is disengaged from the rear wheel assembly 22 to allow travel of the rear wheel assembly 22.

The brake mechanism comprises a brake disc fixedly arranged on the rear wheel component 22 and a brake block component which is movably arranged on the cart frame 1 and can be matched with or separated from the brake disc. When the brake mechanism is in a braking state, the brake block component is matched with the brake disc, and when the brake mechanism is in a braking releasing state, the matching between the brake block component and the brake disc is released.

Specifically, the brake block assembly comprises a brake block 31 which can be rotatably arranged on the cart frame 1 and a rotating part 32 which can be rotatably arranged on the brake block 31, and a positioning groove is arranged on the brake disc. When the brake mechanism is in a braking state, the rotating part 32 is positioned in the positioning groove, and the outer contour surface of the rotating part 32 is in rolling contact with the side wall of the positioning groove; when the brake mechanism is in the brake-released state, the brake block 31 and the rotating member 32 are both released from the positioning groove. Therefore, in the process of braking or braking release of the brake mechanism, the brake block component moves relative to the brake disc to enable dynamic friction to be generated between the outer contour surface of the rotating part 32 and the side wall of the positioning groove, and the friction resistance of the brake block component is relatively small, so that the brake mechanism can be switched between a braking state and a braking release state more easily. In this embodiment, the rotating member 32 is a bearing.

The stroller further comprises a driving mechanism, and the driving mechanism can enable the brake mechanism to brake from the brake state and brake from the brake state.

Specifically, as shown in fig. 2 to 6, the driving mechanism includes a driving member and a flexible connecting member 42. The driving member is provided on the push handle 11, and the driving member may be provided integrally with the push handle 11, or the driving member may be a separately provided member. One end of the flexible link 42 is connected to the brake mechanism and the flexible link 42 is routed around the driving member and positioned in the path of the driving member sliding, or the other end of the flexible link 42 is disposed on the driving member. When the push handle 11 slides relative to the push rod assembly, the driving member is driven to synchronously slide relative to the push rod assembly, and the flexible connecting member 42 moves along with the sliding of the driving member, so as to drive the brake mechanism to move.

In this embodiment, the horizontal rod 121 is provided with an accommodating groove 121a extending in the up-down direction, the accommodating groove 121a is matched with the driving member, and the driving member is located in the accommodating groove 121a and can be slidably disposed relative to the accommodating groove 121 a.

The driving member may be a first pulley 41 disposed independently of the handle 11, and the first pulley 41 may be rotatably disposed on the handle 11, so as to reduce friction between the driving member and the flexible connecting member 42 when the driving member slides relative to the push rod assembly to drive the flexible connecting member 42. One end of the flexible connecting member 42 is fixedly connected to the brake block 31 provided at the wheel assembly portion, and the other end thereof passes through the other rod member of the stroller frame 1 and the vertical rod 122, passes around the lower portion of the first pulley 41, and is fixedly connected to the cross bar 121. In this embodiment, the flexible coupling 42 is a pull cable.

Thus, when the push handle 11 is not held by hands, the brake mechanism is in a brake state; when a person holds the push handle 11 to push the stroller, the push handle 11 slides downward relative to the push rod assembly, and the flexible connecting member 42 passes around the first pulley 41 from the lower part of the first pulley 41, so that when the push handle 11 slides downward, the first pulley 41 is driven to synchronously move downward, the flexible connecting member 42 is pulled, and the brake block assembly is pulled to rotate relative to the stroller frame 1 through the flexible connecting member 42, so that the brake mechanism is released from the braking state and is in the releasing state.

The drive mechanism further comprises a second pulley 5 rotatably arranged on the push rod assembly, and a flexible connection 42 is passed over the second pulley 5. Thus, during the braking or the braking releasing process, the flexible connecting piece 42 is in rolling contact with the second pulley 5, which can reduce the friction resistance between the flexible connecting piece 42 and the second pulley 5, and can make the braking and the braking releasing operation of the braking mechanism easier while prolonging the service life of the flexible connecting piece 42. Furthermore, the second pulley 5 can also guide the direction of the flexible connecting element 42 in the push rod assembly to avoid the flexible connecting element 42 from directly contacting the inner wall of the push rod assembly in the push rod assembly, thereby reducing the abrasion of the flexible connecting element 42.

In this embodiment, the second pulleys 5 are symmetrically disposed on both left and right sides of the first pulley 41. The first pulley 41 and the second pulleys 5 positioned at the left and right sides of the first pulley form a group of pulley assemblies together, and the driving mechanism comprises a plurality of groups of pulley assemblies arranged at intervals.

The driving mechanism further comprises an elastic member 6 for driving the brake mechanism to switch from the brake release state to the brake state, and two end parts of the elastic member 6 are respectively arranged on the brake block 31 and the cart frame 1. The flexible connecting member 42 is connected to the brake block 31 and the elastic member 6 is located on the same side of the rotating shaft 33 where the stroller frame 1 and the brake block 31 are rotatably connected, and the rotating member 32 is located on the other side of the rotating shaft 33. When a user holds the push handle 11 and the push handle 11 slides downwards relative to the push rod assembly, the first pulley 41 is driven to move downwards, the brake block 31 is pulled to rotate through the traction cable, so that the brake mechanism is released, and in the process, the elastic element 6 is compressed; when the push handle 11 is released by a human hand, the elastic force of the elastic element 6 drives the brake block 31 to rotate reversely and reset, and the first pulley 4 is driven by the traction cable to drive the push handle 11 to slide upwards and reset relative to the push rod assembly.

In this embodiment, the elastic member 6 is a spring.

The stroller further comprises an upper limiting structure used for limiting the upward sliding of the push handle 11 in the braking process of the brake mechanism, the upper limiting structure comprises a convex part 111 fixedly arranged on the push handle 11 and a groove 122a fixedly arranged on the push rod assembly and matched with the convex part 111, the groove 122a extends in the up-down direction, and the convex part 111 is located in the groove 122 a. Thus, when the push handle 11 slides upwards until the protrusion 111 abuts against the upper side wall of the slot 122a during braking of the brake mechanism, the push handle 11 cannot slide upwards any more, and the brake mechanism is in a braking state.

In this embodiment, the brake mechanism sets up respectively on the rear wheel subassembly of left and right sides, and actuating mechanism corresponds and is provided with two sets ofly, orders about the brake mechanism of left and right sides respectively and releases and brake.

The working principle of the baby stroller is as follows:

when the push handle 11 of the stroller is not held by hands, the brake mechanism is in a brake state to prevent the stroller from advancing, so that the accident that the stroller is out of control is avoided, and the safety performance of the stroller in use is improved. In this state, the rotor 32 is located in the brake disc positioning slot, and the bottom of the U-shaped slot of the push handle 11 is spaced from the upper end surface of the cross bar 121 by a distance, as shown in fig. 2 and 3.

When a person holds the push handle 11 to push the baby stroller, the push handle 11 slides downwards relative to the push rod assembly, the first pulley 41 synchronously moves downwards, the brake block 31 is pulled by the traction cable to rotate relative to the stroller frame 1, the brake block 31 and the rotating member 32 are disengaged from the positioning groove on the brake disc, and the brake mechanism is in a brake release state. At this time, the pushing handle 11 slides downwards to the bottom of the U-shaped groove and abuts against the upper end surface of the cross bar 121, and the pushing handle 11 cannot slide downwards continuously, so that the downward sliding of the pushing handle 11 is limited, as shown in fig. 4 and 5. During the release of the brake mechanism, the resilient member 6 is compressed.

When the push handle 11 is released by a hand, under the action of the elastic force of the elastic member 6, the brake block 31 reversely rotates and resets relative to the stroller frame 1, the first pulley 41 is driven by the traction cable to drive the push handle 11 to slide upward relative to the push rod assembly until the convex part 111 on the push handle 11 abuts against the upper side wall of the groove 122a on the push rod assembly, the push handle 11 cannot continuously slide upward, the push handle returns to the initial state, and the brake mechanism is also in the braking state.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A stroller comprising a stroller frame, a wheel assembly disposed at a bottom of the stroller frame, and a braking mechanism for braking the wheel assembly to prevent the stroller from traveling, the braking mechanism having braking and de-braking states, characterized in that: the stroller frame comprises a push rod assembly and a push handle for holding by a hand when the stroller is pushed, the push handle can be arranged on the push rod assembly in a vertical sliding manner, the stroller further comprises a driving mechanism for driving the brake mechanism to be switched between a braking state and an unlocking state, the driving mechanism comprises a driving piece and a flexible connecting piece, the driving piece and the flexible connecting piece are arranged on the push handle, one end of the flexible connecting piece is connected with the brake mechanism, the flexible connecting piece passes around the driving piece and is positioned on a sliding path of the driving piece, or the other end of the flexible connecting piece is arranged on the driving piece, when the hand leaves the push handle, the brake mechanism is in the braking state, when the hand holds the push handle to push the stroller, the push handle slides relative to the push rod assembly to drive the driving piece to slide synchronously relative to the push rod assembly, the flexible connecting piece moves along with the sliding of the driving piece to drive the brake mechanism to be in an unlocking state.

2. The stroller of claim 1, wherein: when the baby stroller is pushed, the pushing handle slides downwards relative to the pushing rod assembly, the driving piece is a first pulley which can be rotatably arranged on the pushing handle, and the other end of the flexible connecting piece is fixedly arranged on the pushing rod assembly after passing through the lower part of the first pulley.

3. The stroller of claim 1, wherein: the driving mechanism further comprises a second pulley which is rotatably arranged in the push rod assembly, and the flexible connecting piece is wound through the second pulley from the upper part of the second pulley.

4. The stroller of claim 3, wherein: the driving piece is a first pulley which can be rotatably arranged on the push handle, and the second pulleys are respectively arranged on the left side and the right side of the first pulley.

5. The stroller of claim 4, wherein: the first pulley and the second pulleys positioned on the left side and the right side of the first pulley jointly form a group of pulley assemblies, and the driving mechanism comprises a plurality of groups of pulley assemblies arranged at intervals.

6. The stroller of claim 1, wherein: the child cart further comprises an upper limiting structure used for limiting the upward sliding of the pushing handle, the upper limiting structure comprises a convex portion fixedly arranged on the pushing handle and a groove fixedly arranged on the pushing rod assembly and matched with the convex portion, the groove extends along the up-down direction, and the convex portion is located in the groove.

7. The stroller of claim 1, wherein: the push rod assembly is provided with a containing groove extending along the up-down direction, the containing groove is matched with the driving piece, and the driving piece is located in the containing groove and can be arranged in a sliding mode relative to the containing groove.

8. The stroller of claim 1, wherein: the driving mechanism further comprises an elastic piece for driving the brake mechanism to be switched from the brake release state to the brake state, and two end parts of the elastic piece are respectively arranged on the brake mechanism and the cart frame.

9. The stroller of claim 1, wherein: push away the handle and extend along left right direction, it has opening U type groove down to push away the handle, push rod assembly includes the horizontal pole that extends along left right direction, the horizontal pole is located push away the U type groove of handle, work as when brake mechanism is in the brake state, the tank bottom in U type groove with an interval distance between the up end of horizontal pole, work as when brake mechanism is in the state of separating to stop, the tank bottom in U type groove with the up end counterbalance of horizontal pole is established.

10. The stroller of claim 1, wherein: the push rod assembly comprises a vertical rod extending from the front to the back in an upward inclined mode and a transverse rod extending in the left-right direction, the push handle extends in the left-right direction, the push handle is located above the transverse rod, and the length of the push handle is at least two thirds of the length of the transverse rod.