CN113276933A

CN113276933A - Children's barrow

Info

Publication number: CN113276933A
Application number: CN202110365819.8A
Authority: CN
Inventors: 贺新军
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
Anticipated expiration: 2041-04-06
Also published as: CN113276933B; CN215322815U

Abstract

The invention discloses a child stroller, which comprises a stroller frame, a wheel assembly and a brake mechanism with braking and braking states, wherein the stroller frame comprises a push rod assembly and a push handle rotationally connected with the push rod assembly, the child stroller also comprises a driving mechanism, the driving mechanism comprises a driving piece rotationally arranged in the push rod assembly, the push handle is matched with or movably connected with the driving piece, the driving piece is connected with the brake mechanism through a flexible connecting piece, when the push handle rotates relative to the push rod assembly under the braking state of the brake mechanism, the driving piece is driven to rotate relative to the push rod assembly through the matching or connection of the push handle and the driving piece, and the brake mechanism is braked through the flexible connecting 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 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 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 hand when the stroller is pushed, the push handle is rotationally connected with the push rod assembly through a first shaft, the stroller further comprises a driving mechanism used for driving the brake mechanism to be mutually switched between the brake state and the brake state, the driving mechanism comprises a driving piece rotationally arranged in the push rod assembly through a second shaft, the push handle is matched with or movably connected with the driving piece, the driving piece is connected with the brake mechanism through a flexible connecting piece, when the hand leaves the push handle, the brake mechanism is in the brake state, grips when the staff push away the handle and carry out when children's shallow, it is relative to push away the handle push rod subassembly rotates, through push away the handle with the cooperation or the connection of driving piece order about the driving piece is relative push rod subassembly rotates, through the flexonics spare pulling brake mechanism makes brake mechanism unlocks and is in the state of separating the brake.

Preferably, a first gear is fixedly arranged on the push handle, a second gear is fixedly arranged on the driving piece, and the first gear is meshed with the second gear.

Furthermore, the wheel shaft of the second gear is coaxial with the second shaft, a connecting part is arranged on the driving part, one end part of the flexible connecting piece is fixedly connected to the connecting part, the second shaft and the connecting part are respectively positioned on two opposite sides of the driving part, and the reference circle diameter of the first gear is larger than that of the second gear.

Preferably, the push handle is provided with a third shaft between the driving pieces, the third shaft is fixedly arranged on the push handle and can be arranged in a sliding manner relative to the driving pieces, or the third shaft is fixedly arranged on the driving pieces and can be arranged in a sliding manner relative to the push handle.

Further, be provided with connecting portion on the driving piece, a tip fixed connection of flexible connectors is in on the connecting portion on the driving piece, the second axle with connecting portion are located respectively the relative both sides of driving piece, connecting portion with the distance between the second axle is greater than the third axle with the distance between the second axle.

Preferably, the driving mechanism further comprises a guide member for guiding the trend of the flexible connecting member, the guide member is rotatably arranged in the push rod assembly, and the flexible connecting member is wound through the guide member.

Preferably, the driving mechanism further comprises a first elastic member for driving the brake mechanism to return from the brake release state to the brake state when the push handle is released, and two end parts of the first elastic member are respectively arranged on the brake mechanism and the cart frame.

Preferably, the driving mechanism further comprises a second elastic member for driving the push handle to return when the push handle is released, and two end portions of the second elastic member are respectively arranged on the push handle and the push rod assembly.

Preferably, the push rod assembly comprises a push rod, the push rod comprises two first sections extending obliquely upwards from front to back and a second section extending in the left-right direction and connected between the two first sections, the rotating connection position of the push handle and the push rod assembly is located on the first sections, when the child stroller is pushed, the push handle rotates downwards to be close to the push rod and at least covers the front upper part of the push rod, and when the push handle is loosened, the push handle rotates upwards to be far away from the push rod.

Furthermore, a fixed seat is arranged on the first section, the pushing handle is rotatably connected with the pushing rod assembly at the fixed seat, and the driving piece can be rotatably arranged in the fixed seat.

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 hands, 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 in use is greatly improved, when the push handle is held by hands and is rotated, the driving piece matched with or connected with the push handle can be driven to rotate relative to the push rod assembly, so that the brake mechanism can be 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.

Drawings

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

fig. 2 is a schematic structural view of a push handle portion of the stroller of the present invention (embodiment 1, 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 (embodiment 1, the braking mechanism is in a braking state);

fig. 4 is a schematic structural view of a push handle portion of the stroller of the present invention (embodiment 1, the brake mechanism is in an unlocked state);

fig. 5 is a schematic structural view of a wheel assembly portion of the stroller of the present invention (embodiment 1, 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 (example 1);

fig. 7 is a schematic structural view of a push handle portion of the stroller of the present invention (embodiment 2, the brake mechanism is in a braking state);

fig. 8 is a schematic structural view of a wheel assembly portion of the stroller of the present invention (embodiment 2, the braking mechanism is in a braking state);

fig. 9 is a schematic structural view of a push handle portion of the stroller of the present invention (embodiment 2, the brake mechanism is in an unlocked state);

fig. 10 is a schematic structural view of a wheel assembly portion of the stroller of the present invention (embodiment 2, the brake mechanism is in an unlocked state);

fig. 11 is an exploded view of the push handle portion of the stroller of the present invention (example 2).

Wherein: 1. a cart frame; 11. a push handle; 111. a first gear; 12. a push rod assembly; 121. a push rod; 122. a fixed seat; 13. a rear wheel joint; 21. a front wheel assembly; 22. a rear wheel assembly; 3. a brake handle; 41. a drive member; 411. a second gear; 412. a connecting portion; 413. a chute; 42. a flexible connector; 51. a first elastic member; 52. a second elastic member; 61. a first shaft; 62. a second shaft; 63. a third axis; 7. a guide member.

Detailed Description

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

Example 1

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 12 and a push handle 11 for being held by a hand of a person when the stroller is pushed, and the push handle 11 and the push rod assembly 12 are rotatably connected through a first shaft 61.

The push rod assembly 12 comprises a push rod 121, and the push rod 121 extends obliquely upwards from front to back to be positioned below the push handle 11. The push rod 121 comprises two first sections extending obliquely upwards from front to back and a second section extending in the left-right direction and connected between the two first sections, and the rotating connection position of the push handle 11 and the push rod assembly 12, namely the first shaft 61, is positioned on the first section of the push rod 121. The handle 11 can rotate relative to the push rod assembly 12 to move close to or away from the push rod 121, specifically, when the child stroller is pushed, the handle 11 rotates downward to move close to the push rod 121 and covers at least the front upper part of the push rod 121, and when the handle 11 is released, the handle 11 rotates upward to move away from the push rod 121.

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 pin movably arranged on the cart frame 1 and capable of being matched with or separated from the brake disc. When the brake mechanism is in a braking state, the brake pin is matched with the brake disc, and when the brake mechanism is in a braking releasing state, the matching between the brake pin and the brake disc is released. The cart frame comprises a rear wheel connector 13, the brake mechanism further comprises a brake handle 3 which can be rotatably arranged on the rear wheel connector 13, and the brake pin is fixedly arranged on the brake handle 3 or matched with the brake handle 3.

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

Specifically, as shown in fig. 2 to 6, the driving mechanism includes a driving member 41 rotatably disposed in the push rod assembly 12 via a second shaft 62, in this embodiment, the push handle 11 is engaged with the driving member 41, the driving member 41 is simultaneously connected with the brake handle 3 via a flexible connecting member 42, and the flexible connecting member 42 can be a traction cable.

When the push handle 11 is not held by a human hand, the push handle 11 is far away from the push rod 121, and the brake mechanism is in a brake state; when a person holds the push handle 11 to push the stroller, the push handle 11 rotates in a direction approaching the push rod 121, and the drive member 41 is driven to rotate relative to the push rod assembly 12 by the cooperation between the push handle 11 and the drive member 41, so that the brake mechanism is pulled by the flexible connecting member 42 to be released from the braking state and be in the releasing state.

In this embodiment, the push rod assembly 12 further includes a fixing seat 122 fixedly disposed on the push rod 121, specifically, the fixing seat 122 is disposed on the first section of the push rod 121, the push handle 11 is rotatably connected to the push rod assembly 12 at the fixing seat 122, the fixing seat 122 has a hollow cavity, and the driving member 41 is rotatably disposed in the hollow cavity of the fixing seat 122 through the second shaft 62.

The handle 11 is fixedly provided with a first gear 111, the driving member 41 is fixedly provided with a second gear 411, and the first gear 111 is meshed with the second gear 411. When the user holds the handle 11 to push the stroller, the handle 11 rotates, and the driving member 41 is driven to rotate relative to the fixing base 122 by the cooperation of the first gear 111 and the second gear 411. In this embodiment, the first gear 111 has partial gear teeth along the circumferential direction of its rotation, the second gear 411 has gear teeth along the entire circumferential direction of its rotation, and the axle of the second gear 411 is disposed coaxially with the second axle 62.

The driving member 41 is fixedly provided with a connecting portion 412, one end portion of the flexible connecting member 42 is fixedly connected to the connecting portion 412, and the other end portion of the flexible connecting member 42 is fixedly provided on the brake lever 3. On the driver 41, the connecting portion 412 and the second shaft 62 are located on opposite sides of the driver 41, respectively. In this embodiment, the connecting portion 412 is located at the upper portion of the driving member 41, and the second shaft 62 and the second gear 411 are located at the lower portion of the driving member 41.

The pitch circle diameter of the first gear 111 is larger than that of the second gear 411, and the distance between the second shaft 62 and the connecting portion 412 is at least larger than the pitch circle radius of the first gear 111, and in the present embodiment, the distance between the second shaft 62 and the connecting portion 412 is larger than the sum of the pitch circle radius of the first gear 11 and the pitch circle radius of the second gear 411.

Thus, when the handle 11 rotates a relatively small angle relative to the push rod assembly 12, the driving member 41 can rotate a relatively large angle relative to the push rod assembly 12, and meanwhile, when the driving member 41 rotates a relatively small angle relative to the fixing seat 122, a large stroke can be generated in the flexible connecting member 42, which makes the brake release easier.

The driving mechanism further comprises a guiding structure for guiding the flexible connecting member 42 in the push rod assembly 12, the guiding structure comprises a guiding member 7 rotatably disposed in the hollow cavity of the fixed seat 122, the flexible connecting member 42 winds through the guiding member 7, and the guiding member 7 can adopt a rotating pin or a rotating roller. Thus, in the braking or braking releasing process, the flexible connecting piece 42 is in rolling contact with the guide piece 7, so that the friction resistance between the flexible connecting piece 42 and the guide piece 7 can be reduced, the service life of the flexible connecting piece 42 is prolonged, and the braking and braking releasing operations of the braking mechanism are easier.

The actuating mechanism further comprises a first resilient member 51 for urging the brake mechanism from the released condition to the braking condition, the two ends of the first resilient member 51 being disposed on the brake pin and the rear wheel connector 13 respectively. When a user holds the push handle 11 and rotates the push handle 11 relative to the push rod assembly 12, the driving member 41 is driven to rotate relative to the push rod assembly 12, the brake handle 3 is pulled to rotate through the traction cable, the brake pin is driven to move, the brake mechanism is released, and in the process, the first elastic member 5 is compressed; when the hand releases the push handle 11, the elastic force of the first elastic member 5 drives the brake pin to drive the brake handle 3 to rotate reversely, the driving member 41 is pulled by the traction cable to rotate reversely relative to the push rod assembly 12, and the push handle 11 is driven to rotate reversely to reset by the cooperation of the first gear 111 and the second gear 411.

The driving mechanism further comprises a second elastic member 52 for driving the push handle 11 to rotate reversely and return, and two end portions of the second elastic member 52 are respectively arranged on the push handle 11 and the push rod 121.

By providing the first elastic member 51 and the second elastic member 52 at the same time, the brake mechanism can be more quickly restored from the released state to the braking state.

In this embodiment, the first elastic member 51 and the second elastic member 52 are both springs.

The side of the push handle 11 facing the push rod 121 is provided with a containing groove matched with the push rod 121. When the push handle 11 is held to enable the push handle 11 and the push rod 121 to be close to each other, the push rod 121 is accommodated in the accommodating groove of the push handle 11; when the handle 11 is not held, the push rod 121 is released from the accommodation groove.

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 condition, the brake pin engages the brake disc and the push handle 11 is moved away from the push rod 121, as shown in figures 2 and 3.

When a user holds the push handle 11 to push the stroller, the push handle 11 rotates relative to the push rod assembly 12 in a direction close to the push rod 121, the driving member 41 is driven to rotate relative to the fixing seat 122 through the cooperation of the first gear 111 and the second gear 411, the driving member 41 rotates to pull the traction cable to move, the traction cable pulls the brake handle 3 to rotate relative to the stroller frame 1, the brake handle 3 drives the brake pin to move until the engagement between the brake handle and the brake disc is disengaged, and the brake mechanism is in an unlocking state, as shown in fig. 4 and 5. In the braking-released state, the push rod 121 is accommodated in the accommodating groove of the push handle 11. During the braking of the brake mechanism, both the first elastic member 51 and the second elastic member 52 are compressed.

When the hand releases the push handle 11, the push handle 11 rotates upwards relative to the push rod assembly 12 under the action of the elastic force of the second elastic element 52, and the push rod 121 gradually comes out of the accommodating groove; in the process, under the action of the elastic force of the first elastic element 51, the brake pin moves towards the direction matched with the brake disc and drives the brake handle 3 to rotate reversely relative to the stroller frame 1, so that the traction cable pulls the driving element 41 to rotate reversely, the push handle 11 is driven to rotate reversely through the matching of the first gear 111 and the second gear 411 until the brake pin is matched with the brake disc again, and the push handle 11 rotates reversely and returns to the initial state.

Example 2

In this embodiment, as shown in fig. 7 to 11, the pushing handle 11 is movably connected to the driving member 41. Specifically, the handle 11 and the driving member 41 are rotatably connected through a third shaft 63, the third shaft 63 is fixedly disposed on the handle 11, and the third shaft 63 is slidably disposed relative to the driving member 41, or the third shaft 63 is fixedly disposed on the driving member 41, and the third shaft 63 is slidably disposed relative to the handle 11. The driving member 41 is rotatably connected to the push rod assembly 12 via a second shaft 62.

In this embodiment, the third shaft 63 is fixedly disposed on the pushing handle 11, the driving member 41 is provided with a sliding slot 413 extending in the vertical direction, and the third shaft 63 is disposed in the sliding slot 413 and slidably disposed along the length extending direction of the sliding slot 413.

In this embodiment, the connecting portion 412 for connecting the traction cable and the second shaft 62 are respectively located on the driving member 41 at two opposite sides of the driving member 41, in this embodiment, the connecting portion 412 is located at the upper portion of the driving member 41, and the second shaft 62 is located at the lower portion of the driving member 41.

The connecting portion 412 and the sliding groove 413 are located on opposite sides of the second shaft 62, and the third shaft 63 is located below the second shaft 62. The distance between the connecting portion 42 and the second shaft 62 is greater than the distance between the third shaft 63 and the second shaft 62.

Thus, when the handle 11 rotates a relatively small angle relative to the push rod assembly 12, the driving member 41 can also rotate a relatively large angle relative to the push rod assembly 12, and meanwhile, when the driving member 41 rotates a relatively small angle relative to the fixing seat 122, the flexible connecting member 42 can generate a large stroke, which makes the brake release easier.

The rest is the same as in example 1.

When a user holds the push handle 11 to push the stroller, the push handle 11 rotates relative to the push rod assembly 12 in a direction close to the push rod 121, the drive member 41 is driven to rotate relative to the fixed seat 122 when the push handle 11 rotates, in the process, the pull cable pulls the brake handle 3 to rotate relative to the stroller frame 1, the brake handle 3 drives the brake pin to move until the brake pin is disengaged from the brake disc, and the brake mechanism is in an unlocking state, as shown in fig. 9 and 10. In the braking-released state, the push rod 121 is accommodated in the accommodating groove of the push handle 11. During the braking of the brake mechanism, both the first elastic member 51 and the second elastic member 52 are compressed.

When the hand releases the push handle 11, the push handle 11 rotates upwards relative to the push rod assembly 12 under the action of the elastic force of the second elastic element 52, and the push rod 121 gradually comes out of the accommodating groove; in the process, under the action of the elastic force of the first elastic member 51, the brake pin moves towards the direction matched with the brake disc and drives the brake handle 3 to rotate reversely relative to the stroller frame 1, so that the traction cable pulls the driving member 41 to rotate reversely, the push handle 11 is driven to rotate reversely and reset, until the brake pin is matched with the brake disc again, namely, the brake mechanism is in a braking state, and the push handle 11 rotates reversely and resets to an initial state, as shown in fig. 7 and 8.

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 component and a push handle which is used for being held by a hand when the stroller is pushed, the push handle is rotationally connected with the push rod component through a first shaft, the stroller further comprises a driving mechanism which is used for driving the brake mechanism to be mutually switched between a brake state and a brake state, the driving mechanism comprises a driving piece which is rotationally arranged in the push rod component through a second shaft, the push handle is matched with or movably connected with the driving piece, the driving piece is connected with the brake mechanism through a flexible connecting piece, when the hand leaves the push handle, the brake mechanism is in the brake state, when the hand holds the push handle to push the stroller, the push handle rotates relative to the push rod component, and the driving piece is driven to rotate relative to the push rod component through the matching or the connection of the push handle and the driving piece, the brake mechanism is pulled by the flexible connecting piece to enable the brake mechanism to be in an unlocking state.

2. The stroller of claim 1, wherein: the push handle is fixedly provided with a first gear, the driving piece is fixedly provided with a second gear, and the first gear is meshed with the second gear.

3. The stroller of claim 2, wherein: the wheel shaft of the second gear is coaxial with the second shaft, the driving piece is provided with a connecting part, one end part of the flexible connecting piece is fixedly connected to the connecting part, the second shaft and the connecting part are respectively positioned on two opposite sides of the driving piece, and the reference circle diameter of the first gear is larger than that of the second gear.

4. The stroller of claim 1, wherein: the push handle with be provided with the third axle between the driving piece, the third axle is fixed to be set up push handle is last, just the third axle can be relative the driving piece sets up with sliding, perhaps the third axle is fixed to be set up on the driving piece, just the third axle can be relative push handle sets up with sliding.

5. The stroller of claim 4, wherein: the driving piece is provided with a connecting portion, one end portion of the flexible connecting piece is fixedly connected to the connecting portion, the second shaft and the connecting portion are located on two opposite sides of the driving piece respectively, and the distance between the connecting portion and the second shaft is larger than the distance between the third shaft and the second shaft.

6. The stroller of claim 1, wherein: the driving mechanism further comprises a guide piece used for guiding the trend of the flexible connecting piece, the guide piece can be rotatably arranged in the push rod assembly, and the flexible connecting piece winds through the guide piece.

7. The stroller of claim 1, wherein: the driving mechanism further comprises a first elastic piece used for driving the brake mechanism to reset from the brake release state to the brake state when the push handle is loosened, and two end parts of the first elastic piece are respectively arranged on the brake mechanism and the cart frame.

8. Child stroller according to claim 1 or 7, characterized in that: the driving mechanism further comprises a second elastic piece for driving the push handle to reset when the push handle is released, and two end parts of the second elastic piece are respectively arranged on the push handle and the push rod assembly.

9. The stroller of claim 1, wherein: the push rod assembly comprises a push rod, the push rod comprises two first sections extending from the front to the back in an upward inclined mode and a second section extending along the left-right direction and connected between the two first sections, the rotating connection position of the push handle and the push rod assembly is located on the first sections, when the child stroller is pushed, the push handle rotates downwards to be close to the push rod and at least covers the front upper portion of the push rod, and when the push handle is loosened, the push handle rotates upwards to be far away from the push rod.

10. The stroller of claim 9, wherein: the first section is provided with a fixed seat, the push handle is rotatably connected with the push rod assembly at the fixed seat, and the driving piece can be rotatably arranged in the fixed seat.