CN112158251B

CN112158251B - Folding unlocking mechanism for reverse retraction of child cart during impact

Info

Publication number: CN112158251B
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: 2023-07-04
Anticipated expiration: 2040-11-12
Also published as: CN112158251A

Abstract

The invention discloses a folding unlocking mechanism for reverse retraction of impact of a child cart, 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 bracket tube and below a U-shaped impact rod from top to bottom, a push rod is processed at the bottom end of the primary slide block, a limit groove is processed at the top of the secondary slide block and at a 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 on 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 the U-shaped impact rod cannot be unlocked due to deviation of acting force of the impact rod during impact, and also can avoid the situation that the rotating rod deflects due to careless external force when the folding is not needed.

Description

Folding unlocking mechanism for reverse retraction of child cart during impact

Technical Field

The invention relates to a folding unlocking mechanism for reverse retraction of a child cart during impact, and belongs to the technical field of child carts.

Background

In the prior art, the frame of the children's barrow is mostly designed into a foldable structure for carrying convenience and storage without occupying space. The CN2014106981237 discloses a fast folding baby carriage frame, which is applied by applicant in 2014, 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 under the U-shaped striking rod, the rotating rod is struck by the striking rod, and the fixed hook is pulled by the rotation of the rotating rod, so that the fixed hook is separated from the rear bracket, and the folding unlocking is realized. The unlocking mechanism with the structure is characterized in that the unlocking mechanism is connected with the steel wire rope, after the steel wire rope is used by multiple impacts, the locking is easy to fail, in the use process, the locking part is easy to unlock due to the action of external force when the steel wire rope is not required to be folded, so that the unlocking is wrong, or the acting force of the U-shaped impact rod is deviated during the impacts, so that the unlocking cannot be realized.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the reverse retraction folding unlocking mechanism for the impact of the child cart, which is more reasonable in structural design and is not easy to damage.

In order to achieve the above purpose, the invention adopts the following technical scheme: the utility model provides a folding release mechanism is retracted in reverse direction of children's shallow striking, including U type striking pole, upper portion support pipe, the joint that upper portion support pipe and lower part support pipe are connected, characterized in that, in upper portion support pipe and be located the below of U type striking pole and set gradually one-level slider from top to bottom, second grade slider, the rotary rod, the round pin that contracts, wherein one-level slider, second grade slider sliding fit is inside upper portion support pipe, be processed at the bottom of one-level slider has the catch bar, be processed at the top of second grade slider and the position that corresponds with the catch bar has the spacing groove, also be processed at the bottom of second grade slider has the catch bar, the catch bar bottom on the second grade slider just aligns the one end of rotary rod, the center of rotary rod articulates on upper portion support pipe, the other end of rotary rod articulates with the top of round pin that contracts; a locking disc is fixed on the joint, 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 for promoting the retraction pin to return into the locking groove is connected between the retraction pin and the upper bracket tube.

Further, the locking disc is composed of two circular locking discs, the two circular locking discs are respectively fixed on two parts of the joint, which mutually generate folding actions, a locking groove is formed in each locking disc, and two protrusions used for being respectively clamped into the locking grooves on the two locking discs are machined at the bottom of the retraction pin. The structural design can ensure that locking can be carried out only in the state that the joint is completely returned, and ensure the use safety of the cart.

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

1. according to the invention, the primary sliding block, the secondary sliding block, the pushing rod, the limiting groove and the like are arranged, so that the force of the striking rod can be effectively transmitted to one end of the rotating rod, the situation that unlocking cannot be realized due to deviation of the acting force of the U-shaped striking rod in striking is avoided, the time of transmitting the striking force to the rotating rod by the U-shaped striking rod can be effectively prolonged, and the situation that the rotating rod deflects due to careless external force when the U-shaped striking rod is not required to be folded is avoided;

2. the invention is formed by the retraction pin, the primary slide block, the secondary slide block and the like, and compared with a steel wire rope and the like in the prior art, the service life is longer, and the locking can not be invalid after the steel wire rope is impacted and used for many times;

3. the invention ensures that the child cart is safer and more reliable to use.

Drawings

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

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

Fig. 3 is a schematic view showing a state that the rotating rod is provided to the upper bracket tube according to the present invention;

the device comprises a U-shaped impact rod, an upper support tube, a lower support tube, a joint, a first-stage sliding block, a second-stage sliding block, a rotating rod, a retracting pin, a pushing rod, a limiting groove, a limiting disc, a locking groove and a locking groove, wherein the U-shaped impact rod, the upper support tube, the lower support tube, the joint, the first-stage sliding block, the second-stage sliding block, the rotating rod, the retracting pin, the retracting rod, the pushing rod, the limiting groove, the limiting disc, the locking disc and the locking groove are arranged in sequence, and the U-shaped impact rod is arranged in the middle.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1-3, the child stroller impact reverse retraction folding unlocking mechanism of the embodiment comprises a U-shaped impact rod 1, an upper support tube 2, a joint 4 connected with the upper support tube 2 and a lower support tube 3, wherein a primary slide block 5, a secondary slide block 6, a rotating rod 7 and a retraction pin 8 are sequentially arranged in the upper support tube 2 and below the U-shaped impact rod 1 from top to bottom, the primary slide block 5 and the secondary slide block 6 are in sliding fit in the upper support tube 2, a push rod 9 is machined at the bottom end of the primary slide block 5, a limit groove 10 is machined at the top of the secondary slide block 6 and at a position corresponding to the push rod 9, a push rod 9 is also machined at the bottom end of the secondary slide block 6, the bottom end of the push rod 9 on the secondary slide block 6 is just aligned with one end of the rotating rod 7, the center of the rotating rod 7 is hinged on the upper support tube 2, and the other end of the rotating rod 7 is hinged with 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 for promoting the retraction pin 8 to return into the locking groove 11.1 is connected between the retraction pin 8 and the upper bracket 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. The structural design can ensure that locking can be carried out only in the state that the joint is completely returned, and ensure the use safety of the cart.

When the unlocking is needed, the first-stage sliding block is impacted by the U-shaped impact rod, the first-stage sliding block is promoted to be close to the second-stage sliding block, the push rod 9 on the first-stage sliding block is clamped into the limit groove 10 on the second-stage sliding block, the accurate impact force transmission is realized, then the second-stage sliding block slides downwards, the push rod 9 on the second-stage sliding block also moves downwards until one end of the rotating rod 7 deflects downwards, the other end of the rotating rod 7 deflects upwards, the retracting pin 8 is pulled to retract upwards, and accordingly the locking groove on the locking disc 11 is separated, and unlocking is realized.

It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 one … …" does not exclude the presence of other like 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 understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein 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. The utility model provides a folding release mechanism is retracted in reverse direction of children's shallow striking, including U type striking pole, upper portion support pipe, the joint that upper portion support pipe and lower part support pipe are connected, characterized in that, in upper portion support pipe and be located the below of U type striking pole and set gradually one-level slider from top to bottom, second grade slider, the rotary rod, the round pin that contracts, wherein one-level slider, second grade slider sliding fit is inside upper portion support pipe, be processed at the bottom of one-level slider has the catch bar, be processed at the top of second grade slider and the position that corresponds with the catch bar has the spacing groove, also be processed at the bottom of second grade slider has the catch bar, the catch bar bottom on the second grade slider just aligns the one end of rotary rod, the center of rotary rod articulates on upper portion support pipe, the other end of rotary rod articulates with the top of round pin that contracts; a locking disc is fixed on the joint, 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 for promoting the retraction pin to return into the locking groove is connected between the retraction pin and the upper bracket tube; the locking disc is composed of two circular locking discs which are respectively fixed on two parts of the joint, which mutually generate folding actions, each locking disc is provided with a locking groove, and the bottom of the retraction pin is provided with two bulges which are respectively clamped into the locking grooves on the two locking discs.