CN112158251A

CN112158251A - Reverse-retraction folding unlocking mechanism for collision of stroller

Info

Publication number: CN112158251A
Application number: CN202011257238.4A
Authority: CN
Inventors: 周劲松; 钟志群; 李林
Original assignee: Changde Yixiang Industrial Co ltd
Current assignee: Changde Yixiang Industrial Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-01-01
Anticipated expiration: 2040-11-12
Also published as: CN112158251B

Abstract

The invention discloses a collision reverse retraction folding unlocking mechanism of a stroller, which is characterized in that a primary slide block, a secondary slide block, a rotary rod and a retraction pin are sequentially arranged in an upper support tube and below a U-shaped collision rod from top to bottom, a push rod is processed at the bottom end of the primary slide block, a limiting groove is processed at the top of the secondary slide block and at the position corresponding to the push rod, the push rod is also processed at the bottom end of the secondary slide block, the bottom end of the push rod on the secondary slide block is just aligned with one end of the rotary rod, a locking disc is fixed on a joint, a locking groove is formed in the locking disc, and the bottom of the retraction pin is clamped into the locking groove in a locking state. The invention can effectively avoid the situation that unlocking cannot be realized due to deviation generated by the acting force of the U-shaped impact rod during impact and also avoid the situation that the rotating rod deflects due to careless external force when folding is not needed.

Description

Reverse-retraction folding unlocking mechanism for collision of stroller

Technical Field

The invention relates to a reverse retraction folding unlocking mechanism for a child stroller after being impacted, and belongs to the technical field of children strollers.

Background

In the prior art, most of the frames of the stroller are designed to be foldable for carrying convenience and storage without occupying space. CN2014106981237 discloses a quick folding stroller frame, which was applied by the applicant in 2014, and the frame is convenient to unfold and fold, and the unlocking mechanism of the folding part of the frame is composed of a U-shaped striking rod, a rotating rod, a connecting steel wire, a fixed hook and the like, the rotating rod is directly fixed below the U-shaped striking rod, the striking rod strikes the rotating rod, and the rotating rod rotates to pull the fixed hook, so that the fixed hook is separated from the rear support, thereby realizing the folding unlocking. The unlocking mechanism with the structure is easy to lose efficacy after being used by being impacted for many times due to the adoption of the connecting steel wire rope, and the locking part is easy to unlock due to the action of external force when the unlocking mechanism is not required to be folded in the using process, so that the unlocking is mistakenly carried out, or the acting force of the U-shaped impact rod generates deviation during impacting, so that the unlocking cannot be carried out.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a reverse retraction folding unlocking mechanism for a child stroller, which has a more reasonable structural design and is not easy to damage when being impacted.

In order to achieve the purpose, the invention adopts the technical scheme that: a child stroller impact reverse retraction folding unlocking mechanism comprises a U-shaped impact rod, an upper support tube and a joint connected with the upper support tube and a lower support tube, and is characterized in that a first-stage sliding block, a second-stage sliding block, a rotating rod and a retraction pin are sequentially arranged in the upper support tube and below the U-shaped impact rod from top to bottom, wherein the first-stage sliding block and the second-stage sliding block are in sliding fit in the upper support tube; the joint is fixed with a locking disc, a locking groove is formed in the locking disc, the bottom of the retraction pin is clamped into the locking groove in a locking state, and a return spring which enables the retraction pin to return to enter the locking groove is connected between the retraction pin and the upper support tube.

Furthermore, the locking dish comprises two circular locking dishes, and two circular locking dishes are fixed respectively on articulated two parts that produce folding action each other, have all seted up a locking groove on every locking dish, the bottom processing of the round pin that contracts of returning has two to be used for going into respectively the card to go into the arch in locking groove on two locking dishes. This kind of structural design can guarantee only under the state of joint complete return, just can carry out the locking, guarantees the security that the shallow used.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, through the arrangement of the primary sliding block, the secondary sliding block, the pushing rod, the limiting groove and the like, on one hand, the force of the impact rod can be effectively transmitted to one end of the rotating rod, so that the situation that unlocking cannot be realized due to deviation of the acting force of the U-shaped impact rod during impact is avoided, on the other hand, the time that the impact force is transmitted to the rotating rod by the U-shaped impact rod can be effectively prolonged, and the situation that the rotating rod deflects due to careless external force when folding is not needed is avoided;

2. the invention is composed of the retraction pin, the first-stage slide block, the second-stage slide block and the like, compared with the steel wire rope and the like in the prior art, the service life is longer, and the locking can not fail after being used by multiple times of impact;

3. the child stroller is safer and more reliable to use.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention

FIG. 2 is a schematic view of the internal structure of the upper stent tube according to the present invention

FIG. 3 is a schematic view showing a state in which the rotary lever of the present invention is installed in the upper bracket tube;

the device comprises a U-shaped impact rod 1, an upper support pipe 2, a lower support pipe 3, a joint 4, a first-level sliding block 5, a second-level sliding block 6, a second-level sliding block 7, a rotating rod 8, a retraction pin 9, a push rod 10, a limiting groove 11, a locking disc 11.1 and a locking groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the stroller impact reverse retraction folding unlocking mechanism of the present embodiment comprises a U-shaped impact bar 1, an upper bracket tube 2, a joint 4 connecting the upper bracket tube 2 and a lower bracket tube 3, a first-stage slide block 5, a second-stage slide block 6, a rotating rod 7 and a retraction pin 8 are sequentially arranged in the upper support pipe 2 and below the U-shaped impact rod 1 from top to bottom, wherein the first-stage slide block 5 and the second-stage slide block 6 are in sliding fit with the inner part of the upper bracket tube 2, a push rod 9 is processed at the bottom end of the first-stage slide block 5, a limiting groove 10 is formed in the top of the second-stage sliding block 6 and in a position corresponding to the pushing rod 9, the pushing rod 9 is also formed in the bottom end of the second-stage sliding block 6, the bottom end of the pushing rod 9 on the second-stage sliding block 6 is just aligned to one end of the rotating rod 7, the center of the rotating rod 7 is hinged to the upper support tube 2, and the other end of the rotating rod 7 is hinged to the top end of the retraction pin 8; a locking disc 11 is fixed on the joint 4, a locking groove is formed in the locking disc 11, the bottom of the retraction pin 8 is clamped into the locking groove 11.1 in a locking state, and a return spring which enables the retraction pin 8 to return to enter the locking groove 11.1 is connected between the retraction pin 8 and the upper support tube 2.

The locking disc 11 of the invention is composed of two circular locking discs which are respectively fixed on two parts of the joint 4 which mutually generate folding action, each locking disc 11 is provided with a locking groove, and the bottom of the retraction pin 8 is provided with two bulges which are respectively clamped into the locking grooves on the two locking discs. This kind of structural design can guarantee only under the state of joint complete return, just can carry out the locking, guarantees the security that the shallow used.

When needs unblock, through U type impact pole striking one-level slider, make one-level slider draw close to the second grade slider, catch bar 9 card on the one-level slider is gone into the spacing groove 10 on the second grade slider, realize accurate transmission impact, then the second grade slider slides down, catch bar 9 on the second grade slider also downstream until deflecting the one end of rotary rod 7 downwards, the other end of rotary rod 7 upwards deflects, the pulling is retracted the round pin 8 and is upwards retracted, thereby break away from the locking groove on the locking dish 11, in order to realize the unblock.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A child stroller impact reverse retraction folding unlocking mechanism comprises a U-shaped impact rod, an upper support tube and a joint connected with the upper support tube and a lower support tube, and is characterized in that a first-stage sliding block, a second-stage sliding block, a rotating rod and a retraction pin are sequentially arranged in the upper support tube and below the U-shaped impact rod from top to bottom, wherein the first-stage sliding block and the second-stage sliding block are in sliding fit in the upper support tube; the joint is fixed with a locking disc, a locking groove is formed in the locking disc, the bottom of the retraction pin is clamped into the locking groove in a locking state, and a return spring which enables the retraction pin to return to enter the locking groove is connected between the retraction pin and the upper support tube.

2. The stroller bump-return reverse-retraction folding-unlocking mechanism according to claim 1, wherein the locking plate is composed of two circular locking plates, the two circular locking plates are respectively fixed on two mutually folding components of the joint, each locking plate is provided with a locking groove, and two protrusions for respectively being clamped into the locking grooves on the two locking plates are processed at the bottom of the retraction pin.