CN220549096U

CN220549096U - Locking mechanism of baby stroller

Info

Publication number: CN220549096U
Application number: CN202322270649.2U
Authority: CN
Inventors: 郑晓飞
Original assignee: Kunshan Beikaisi Children's Products Co ltd
Current assignee: Kunshan Beikaisi Children's Products Co ltd
Priority date: 2023-08-23
Filing date: 2023-08-23
Publication date: 2024-03-01
Anticipated expiration: 2033-08-23

Abstract

A locking mechanism of a baby stroller comprises a fixed pipe, a seat fixing seat, a vehicle collecting rotating assembly, a stop assembly, a lock pin assembly and a traction wire, wherein the lock pin assembly and the traction wire are arranged in the fixed pipe; the vehicle collecting rotary assembly comprises a rotary sleeve sleeved on the fixed pipe; the stop assembly comprises a safety pin, an unlocking button which is propped against the end part of the safety pin and is arranged in the rotary sleeve in a sliding manner, and a first reset spring which drives the safety pin to extend outwards; pressing the unlocking button inwards, enabling the safety pin to displace inwards and be in clearance fit with the inner wall of the rotary sleeve, loosening the unlocking button, and enabling the safety pin to be inserted into the rotary sleeve outwards; the lock pin assembly comprises a pin and a second reset spring which drives the pin to extend outwards into a lock hole on the seat pocket fixing seat; one end of the traction wire is connected with the lock pin assembly, and the other end of the traction wire is connected with the vehicle collecting rotating assembly. In the case, the locking mechanism of the trolley makes the locking and unlocking processes of the trolley simpler and easier to operate on one hand, and contains fewer parts on the other hand, so that the trolley is convenient to process and assemble.

Description

Locking mechanism of baby stroller

Technical Field

The utility model relates to the technical field of baby strollers, in particular to a locking mechanism of a baby stroller.

Background

The foldable baby stroller is deeply favored by parents at present, and the baby stroller can be carried after being folded during traveling; before folding the cart, a locking mechanism on the cart is usually operated to unlock the open state of the cart, and after unlocking, the cart frame is folded; the open state of the cart is locked and kept through a locking mechanism when the cart is opened; however, the locking mechanism in the prior art is complex in design, contains a large number of parts, and has a complicated structure of parts, so that the processing difficulty of the parts is increased, the assembly difficulty is increased, and the production efficiency of the cart is affected.

Therefore, how to solve the above-mentioned drawbacks of the prior art is a subject to be studied and solved by the present utility model.

Disclosure of Invention

The utility model aims to provide a locking mechanism of a baby stroller.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a locking mechanism of a baby stroller comprises a fixed pipe, a seat fixing seat fixedly connected to two ends of the fixed pipe, a vehicle collecting rotating assembly, a stop assembly for preventing the vehicle collecting rotating assembly from rotating, a lock pin assembly arranged in the fixed pipe and a traction wire;

the vehicle collecting rotary assembly comprises a rotary sleeve rotationally sleeved on the fixed pipe;

the stop assembly comprises a safety pin arranged along the radial direction of the fixed pipe, an unlocking button which is propped against the end part of the safety pin and is arranged in the rotary sleeve in a sliding manner, and a first reset spring which drives the safety pin to extend outwards; pressing the unlocking button inwards, enabling the safety pin to displace inwards and be in clearance fit with the inner wall of the rotary sleeve, loosening the unlocking button, and enabling the safety pin to be inserted into the rotary sleeve outwards;

the lock pin assembly comprises a pin and a second reset spring which drives the pin to extend outwards into a lock hole on the seat fixing seat; the first end of the traction wire is connected with the lock pin assembly, and the second end of the traction wire is connected with the vehicle collecting rotating assembly.

In the scheme, when the frame is unlocked, the unlocking button is firstly pressed inwards to enable the safety pin to displace inwards along the radial direction of the fixed pipe and separate from the limit of the rotating sleeve, then the rotating sleeve is rotated, and the traction wire connected to the rotating sleeve is pulled in the rotating process of the rotating sleeve, so that the pin at the other end of the traction wire is pulled to overcome the elastic force of the first reset spring to displace inwards and separate from the lock hole on the seat fixing base, the unlocking of the frame is realized, and the subsequent folding frame is facilitated. The locking frame open state, when the frame is opened to the service condition, unclamp rotatory cover, the pin outwards stretches into in the lockhole on the seat pocket fixing base under the effect of first reset spring, realizes the locking to the shallow open state, and rotatory cover is under the pulling of traction wire simultaneously, and rotatory cover counter-rotating is to initial position, and the insurance round pin stretches into in the rotatory cover under the effect of second reset spring to support with the unblock button and cooperate.

According to a further technical scheme, the vehicle collecting rotary assembly further comprises a limiting piece which is arranged corresponding to the rotary sleeve and used for limiting the rotary stroke of the rotary sleeve.

According to a further technical scheme, the limiting piece comprises an arc-shaped connecting block hidden in the rotary sleeve and a limiting block for limiting the rotation of the connecting block, and the connecting block is rotationally covered on the fixed pipe and fixedly connected with the inner wall of the rotary sleeve; the limiting block is fixedly connected with the fixed pipe. And when the lock is unlocked, the limiting block rotates along the first direction, and when the lock is locked, the limiting block rotates along the opposite direction. The limiting block is positioned between the rotary sleeve and the fixed pipe, and supports the rotary sleeve when the rotary sleeve rotates.

According to a further technical scheme, the limiting block is integrally provided with the pins which are inserted into the fixing tube, the limiting block and the pins are internally provided with the guide grooves, the pins are inserted into the fixing tube during installation, and the second ends of the traction wires penetrate through the guide grooves and are connected with the connecting blocks. The arrangement of the guide groove ensures that the pulling direction of the pulling wire acting on the pin is fixed, and no deflection occurs.

According to a further technical scheme, the vehicle collecting rotary assembly comprises a handle connected to the rotary sleeve. The handle is located the below of swivel sleeve under the locked condition, when the rotatory cover of needs rotation behind the operation of unblock button, can directly upwards stimulate the handle, makes the unblock of swivel sleeve clockwise rotation carrying out the frame to can mention the shallow through the handle after the unblock, the setting of handle makes unblock process convenient and fast more, and the one-step completion.

According to a further technical scheme, one end sleeve is assembled at two ends of the rotary sleeve respectively, and the two end sleeves are fixedly sleeved on the fixed pipe.

According to a further technical scheme, a groove is formed in the rotary sleeve, the unlocking button is arranged in the groove in a sliding mode, a guide rod is arranged in the groove, and a guide hole is formed in the unlocking button corresponding to the guide rod.

According to a further technical scheme, the lock pin assembly further comprises a connecting pipe which is arranged in the fixed pipe and sleeved on the pin, the first end of the traction wire penetrates through the connecting pipe and is connected with the pin, the second reset spring is arranged in the connecting pipe and sleeved on the traction wire, one end of the second reset spring is in abutting fit with the pin, and the other end of the second reset spring is in abutting fit with the inner wall of the connecting pipe. The setting of connecting pipe has reduced the size that the pin periphery can offset, makes the pin at the in-process of inside and outside removal, and the direction of operation is more stable.

The utility model has the following advantages:

the design of the locking mechanism of the cart in the scheme makes the locking and unlocking processes of the cart simpler and easier to operate on one hand, and on the other hand, the contained parts are fewer, the structure of the parts tends to be simple, the parts are easy to process, the parts are easy to assemble, and the production efficiency of the cart is greatly improved.

Drawings

FIG. 1 is a schematic view of a locking mechanism according to an embodiment of the present utility model;

FIG. 2 is an exploded view of a locking mechanism according to an embodiment of the present utility model;

FIG. 3 is a second exploded view of the locking mechanism of the present utility model;

fig. 4 is a schematic cross-sectional view of a locking mechanism according to an embodiment of the present utility model.

In the above figures: 1. a fixed tube; 2. a seat fixing seat; 3. a rotating sleeve; 4. a handle; 5. a safety pin; 6. an unlock button; 7. a first return spring; 8. a pin; 9. traction wire; 10. a lock hole; 11. a second return spring; 12. a connecting block; 13. a limiting block; 14. pins; 15. a guide groove; 16. an end sleeve; 17. a groove; 18. a guide rod; 19. a guide hole; 20. and (5) connecting pipes.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings and examples:

examples: the present utility model will be described in detail with reference to the drawings, wherein modifications and variations are possible in light of the teachings of the present utility model, without departing from the spirit and scope of the present utility model, as will be apparent to those of skill in the art upon understanding the embodiments of the present utility model.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Singular forms such as "a," "an," "the," and "the" are intended to include the plural forms as well, as used herein.

The terms "first," "second," and the like, as used herein, do not denote a particular order or sequence, nor are they intended to be limiting, but rather are merely used to distinguish one element or operation from another in the same technical term.

As used herein, "connected" or "positioned" may refer to two or more components or devices in physical contact with each other, or indirectly, or in operation or action with each other.

As used herein, the terms "comprising," "including," "having," and the like are intended to be open-ended terms, meaning including, but not limited to.

The term (terms) as used herein generally has the ordinary meaning of each term as used in this field, in this disclosure, and in the special context, unless otherwise noted. Certain terms used to describe the present disclosure are discussed below, or elsewhere in this specification, to provide additional guidance to those skilled in the art in connection with the description herein.

Referring to fig. 1-4, a locking mechanism of a stroller comprises a fixed tube 1, a seat holder 2 fixedly connected to two ends of the fixed tube 1, a retracting rotation assembly, a stop assembly for preventing the retracting rotation assembly from rotating, a locking pin assembly arranged in the fixed tube 1, and a traction wire.

The vehicle collecting rotating assembly comprises a rotating sleeve 3, a handle 4 and a limiting piece, wherein the rotating sleeve 3 is rotatably sleeved on the fixed pipe 1, the handle 4 is connected with the rotating sleeve 3, and the limiting piece is arranged corresponding to the rotating sleeve 3 and used for limiting the rotating stroke of the rotating sleeve 3.

Two ends of the rotary sleeve 3 are respectively provided with an end sleeve 16, and the two end sleeves 16 are fixedly sleeved on the fixed pipe 1.

The limiting piece comprises an arc-shaped connecting block 12 hidden in the rotary sleeve 3 and a limiting block 13 for limiting the rotation of the connecting block 12, and the connecting block 12 is rotationally covered on the fixed pipe 1 and fixedly connected with the inner wall of the rotary sleeve 3; the limiting block 13 is fixedly connected with the fixed pipe 1, specifically, the limiting block 13 is integrally formed with a pin 14 inserted into the fixed pipe 1, guide grooves 15 are formed in the limiting block 13 and the pin 14, when the fixing pipe is installed, the pin 14 is inserted into the fixed pipe 1, and the second end of the traction wire 9 passes through the guide grooves 15 and is connected with the connecting block 12.

The stop assembly comprises a safety pin 5 arranged along the radial direction of the fixed pipe 1, an unlocking button 6 which is propped against the end part of the safety pin 5 and is arranged in the rotary sleeve 3 in a sliding manner, and a first reset spring 7 which drives the safety pin 5 to extend outwards; specifically, the safety pin 5 is limited on the fixed tube 1 and can move along the radial direction of the fixed tube 1; the rotary sleeve 3 is provided with a groove 17, the unlocking button 6 is arranged in the groove 17 in a sliding manner, a guide rod 18 is arranged in the groove 17, and a guide hole 19 is arranged on the unlocking button 6 corresponding to the guide rod 18; the first return spring 7 is sleeved on the safety pin 5, and the first return spring 7 is compressed inwards when the safety pin 5 is displaced inwards along the radial direction of the fixed pipe 1; when the frame is unlocked, the unlocking button 6 is pressed inwards, the safety pin 5 is displaced inwards and is in clearance fit with the inner wall of the rotary sleeve 3, and at the moment, the rotary sleeve 3 can rotate; releasing the unlocking button 6, the safety pin 5 is inserted outwards into the swivel sleeve 3 under the action of the first return spring 7, at which time the swivel sleeve 3 cannot be rotated.

The lock pin assembly comprises a pin 8 and a second reset spring 11 which drives the pin 8 to extend outwards into a lock hole 10 on the seat fixing seat 2; wherein, the first end of the traction wire 9 is connected with the lock pin assembly, and the second end is connected with the vehicle collecting rotating assembly. Specifically, the lock pin assembly further comprises a connecting pipe 20 which is arranged in the fixed pipe 1 and sleeved on the pin 8, the first end of the traction wire 9 passes through the connecting pipe 20 and is connected with the pin 8, the second return spring 11 is arranged in the connecting pipe 20 and sleeved on the traction wire 9, one end of the second return spring 11 is in abutting fit with the pin 8, and the other end of the second return spring is in abutting fit with the inner wall of the connecting pipe 20, so that the pin 8 keeps a movement trend of outwards extending into the lock hole 10 on the seat and stump fixing seat 2. The second end of the traction wire 9 passes through the guide groove 15 and is connected with the connecting block 12.

By the above structure composition, the structural principle of the utility model is now described as follows:

unlocking the frame open state prepares for subsequent folding of the frame: when the frame is unlocked, firstly, the unlocking button 6 is pressed inwards, so that the unlocking button 6 pushes the safety pin 5 to displace inwards and release the locking of the safety pin 5 to the rotary sleeve 3, then the handle 4 is pulled upwards, the rotary sleeve 3 rotates upwards clockwise, the traction wire 9 is pulled in the rotating process of the rotary sleeve 3, the traction wire 9 pulls the pin 8 to displace inwards and separate from the lock hole on the seat stump fixing seat 2, at the moment, the frame is in an unlocking state, the subsequent folding step can be carried out, and after the frame is folded, the frame can be lifted by the handle 4. When the frame is unfolded from a folded state to a use state, the pin 8 stretches outwards into the lock hole 10 on the seat stump fixing seat 2 under the action of the first reset spring 7, locking of the unfolded state of the cart is achieved, meanwhile, the rotary sleeve 3 rotates to an initial position in the opposite direction under the pulling of the traction wire 9, and the safety pin 5 stretches into the rotary sleeve 3 under the action of the second reset spring 11 and is in abutting fit with the unlocking button 6.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims

1. A locking mechanism for a stroller, comprising: comprises a fixed pipe (1), a seat fixing seat (2) fixedly connected with two ends of the fixed pipe (1), a vehicle collecting rotating assembly, a stop assembly for preventing the vehicle collecting rotating assembly from rotating, a lock pin assembly arranged in the fixed pipe (1) and a traction wire;

the vehicle collecting rotary assembly comprises a rotary sleeve (3) rotationally sleeved on the fixed pipe (1);

the stop assembly comprises a safety pin (5) arranged along the radial direction of the fixed pipe (1), an unlocking button (6) which is propped against the end part of the safety pin (5) and is arranged in the rotary sleeve (3) in a sliding manner, and a first reset spring (7) which drives the safety pin (5) to extend outwards; the unlocking button (6) is pressed inwards, the safety pin (5) is displaced inwards and is in clearance fit with the inner wall of the rotary sleeve (3), the unlocking button (6) is loosened, and the safety pin (5) is inserted outwards into the rotary sleeve (3);

the lock pin assembly comprises a pin (8) and a second reset spring (11) which drives the pin (8) to extend outwards into a lock hole (10) on the seat stump fixing seat (2); the first end of the traction wire (9) is connected with the lock pin assembly, and the second end of the traction wire is connected with the vehicle collecting rotating assembly.

2. The stroller locking mechanism of claim 1, wherein: the vehicle-collecting rotating assembly further comprises a limiting piece which is arranged corresponding to the rotating sleeve (3) and used for limiting the rotating stroke of the rotating sleeve (3).

3. A stroller locking mechanism according to claim 2, wherein: the limiting piece comprises an arc-shaped connecting block (12) hidden in the rotary sleeve (3) and a limiting block (13) for limiting the rotation of the connecting block (12), and the connecting block (12) is rotationally covered on the fixed pipe (1) and fixedly connected with the inner wall of the rotary sleeve (3); the limiting block (13) is fixedly connected with the fixed pipe (1).

4. A stroller locking mechanism according to claim 3, wherein: the limiting block (13) is integrally formed with a pin (14) inserted in the fixed pipe (1), a guide groove (15) is formed in the limiting block (13) and the pin (14), the pin (14) is inserted into the fixed pipe (1) during installation, and the second end of the traction wire (9) penetrates through the guide groove (15) to be connected with the connecting block (12).

5. The stroller locking mechanism of claim 1, wherein: the vehicle-collecting rotating assembly comprises a handle (4) connected to the rotating sleeve (3).

6. The stroller locking mechanism of claim 1, wherein: two ends of the rotary sleeve (3) are respectively provided with an end sleeve (16), and the two end sleeves (16) are fixedly sleeved on the fixed pipe (1).

7. The stroller locking mechanism of claim 1, wherein: the rotary sleeve (3) is provided with a groove (17), the unlocking button (6) is slidably arranged in the groove (17), a guide rod (18) is arranged in the groove (17), and a guide hole (19) is formed in the unlocking button (6) corresponding to the guide rod (18).

8. The stroller locking mechanism of claim 1, wherein: the locking pin assembly further comprises a connecting pipe (20) which is arranged in the fixed pipe (1) and sleeved on the pin (8), the first end of the traction wire (9) penetrates through the connecting pipe (20) to be connected with the pin (8), the second return spring (11) is arranged in the connecting pipe (20) and sleeved on the traction wire (9), one end of the second return spring (11) is in abutting fit with the pin (8), and the other end of the second return spring is in abutting fit with the inner wall of the connecting pipe (20).