CN210643424U

CN210643424U - Folding locking structure applied to child trolley

Info

Publication number: CN210643424U
Application number: CN201920980131.9U
Authority: CN
Inventors: 韦发华
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-06-02
Anticipated expiration: 2029-06-26

Abstract

The utility model discloses a be applied to children's handcart's folding locking structure, include: a cart main body; a rear caster frame; the outer peripheral wall of the fixed seat is provided with a positioning groove for positioning and clamping; a bayonet lock which can be embedded into the positioning groove or separated from the positioning groove is movably arranged on the rear caster frame; the unlocking piece is rotatably arranged on the trolley main body and is provided with a protruding part used for pushing the bayonet lock to be disengaged from the positioning groove. Therefore, when the relative position between the rear caster frame and the trolley main body needs to be locked, only the bayonet lock needs to be pushed to be embedded into the positioning groove, and when the relative position between the rear caster frame and the trolley main body needs to be released, only the unlocking piece needs to be rotated to push the bayonet lock to be disengaged from the positioning groove, so that the structure is simple, and the operation is convenient.

Description

Folding locking structure applied to child trolley

Technical Field

The utility model belongs to the technical field of the handcart and specifically relates to a be applied to folding locking structure of children's handcart.

Background

As is well known, with the development of society and the increasing living standard of people, people have higher and higher requirements for life. In order to reduce the burden of people and facilitate people to accompany children to go out, some children carts for children to ride are available in the market. Although the child carts can meet the requirement of children for sitting, the child carts are inconvenient to transport or carry due to the relatively large volume of the child carts. Therefore, some foldable and retractable children trolleys appear on the market, the foldable and retractable children trolleys generally adopt the following structure and comprise a trolley main body, a front caster frame is arranged at the front end of the trolley main body, front casters are arranged on the front caster frame, a rear caster frame extending backwards is movably mounted on the trolley main body, rear casters are arranged on the rear caster frame, and in the using process, the rear caster frame and the front caster frame are in an opening state.

In order to prevent the rear caster frame from accidentally rotating, folding and contracting in the using process of the baby stroller to cause the child on the baby stroller to be injured, the conventional baby stroller is generally provided with a locking structure for locking the relative position of the rear caster frame and the stroller main body, the rear caster frame can be effectively prevented from accidentally rotating, contracting and folding relative to the stroller main body through the locking structure, and the safety of a passenger is ensured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a simple structure, can be applicable to children's handcart's folding locking structure simultaneously.

The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme:

a fold-up latch structure for use with a child stroller, comprising:

the trolley comprises a trolley main body, wherein a front caster frame is arranged at the lower part of the front end of the trolley main body, and a front caster is arranged on the front caster frame;

the rear caster frame is movably arranged on the trolley main body, can rotate relative to the trolley main body and is provided with rear casters;

the fixed seat is arranged on the trolley main body, and a positioning groove for positioning and clamping is formed in the outer peripheral wall of the fixed seat;

a bayonet lock capable of being embedded into the positioning groove or being separated from the positioning groove is movably arranged on the rear caster frame;

the unlocking piece is rotatably arranged on the trolley main body and is provided with a protruding part used for pushing the bayonet lock to be disengaged from the positioning groove.

As an improvement of the technology, one end of the rear caster frame, which is connected with the trolley main body, is provided with a strip-shaped sliding groove, the clamping pin is movably arranged in the strip-shaped sliding groove, and the clamping pin can reciprocate along the strip-shaped sliding groove.

As a further improvement of the technology, the rear caster frame is provided with a connecting seat for movably connecting the fixed seat, and the fixed seat is provided with a horizontal rotating shaft movably connected with the connecting seat.

Preferably, the unlocking piece is provided with a movable connecting hole which is matched with the horizontal rotating shaft, and the horizontal rotating shaft is movably arranged in the movable connecting hole.

The positioning groove is arranged on the rear caster frame, and the positioning groove is arranged on the rear caster frame and can drive the clamping pin to be embedded into the positioning groove.

Still further, the reset mechanism is a spring, one end of the spring is connected with the rear caster frame, and the other end of the spring is connected with the bayonet lock.

The utility model has the advantages that: because the utility model discloses a be provided with the fixing base that has the constant head tank in the handcart main part, the activity is provided with on the back truckle frame can imbed in the constant head tank or follow bayonet lock of deviating from in the constant head tank still is provided with one in the handcart main part and can promotes the bayonet lock follow the unlocking piece of deviating from in the constant head tank, when consequently needing the relative position between locking back truckle frame and the handcart main part, only need promote the bayonet lock embedding in the constant head tank, when the relative position of locking between back truckle frame and the handcart main part is relieved to needs, only need rotate unlocking piece and promote the bayonet lock follow deviate from in the constant head tank can, simple structure, convenient operation.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of a preferred embodiment of the present invention in use on a stroller;

FIG. 2 is a schematic view of the detent mechanism of the preferred embodiment of the present invention;

FIG. 3 is a schematic view of the release member pushing the locking pin to disengage from the positioning slot according to a preferred embodiment of the present invention;

FIG. 4 is an exploded view of a preferred embodiment of the present invention;

fig. 5 is an enlarged schematic view at a in fig. 2.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, a structural diagram of a folding locking structure for a stroller according to a preferred embodiment of the present invention applied to a stroller includes a stroller main body 10, a front caster frame 11 is disposed at a lower portion of a front end of the stroller main body 10, and a front caster 110 is mounted on the front caster frame 11; a rear caster frame 12 capable of extending backwards is movably mounted on the cart main body 10, the rear caster frame 12 can rotate relative to the cart main body 10, and a rear caster 120 is arranged on the rear caster frame 12; the cart body 10 is provided with the fixing seat 20, a positioning groove 21 for positioning and clamping is formed in the outer peripheral wall of the fixing seat 20, specifically, referring to fig. 4, the rear caster frame 12 is movably provided with a bayonet 121 capable of being embedded into the positioning groove 21 or being disengaged from the positioning groove 21; an unlocking member 30 is rotatably disposed on the cart body 10, and a protrusion 31 for pushing the locking pin 121 to be released from the positioning groove 21 is disposed on the unlocking member 30.

Because the utility model discloses a be provided with the fixing base 20 that has constant head tank 21 on handcart main part 10, the activity is provided with on back truckle frame 12 can imbed in the constant head tank 21 or follow bayonet lock 121 of deviating from in the constant head tank 21 still is provided with one on the handcart main part 10 and can promotes bayonet lock 121 follow the unlocking piece 30 of deviating from in the constant head tank 21, when consequently needing to lock the relative position between back truckle frame 12 and the handcart main part 10, only need promote bayonet lock 121 embedding in the constant head tank 21, when the relative position of locking between back truckle frame 12 and the handcart main part 10 is relieved to needs, only need rotate unlocking piece 30 and promote bayonet lock 121 follow deviate from in the constant head tank 21 can, simple structure, convenient operation.

Referring to fig. 2 and 5, in order to facilitate the locking pin 121 to be mounted on the rear wheel frame 12, in this embodiment, a strip-shaped sliding slot 122 is formed at one end of the rear wheel frame 12 connected to the cart body 10, the locking pin 121 is movably mounted in the strip-shaped sliding slot 122, and the locking pin 121 can reciprocate along the strip-shaped sliding slot 122. By adopting the structure, the bayonet 121 can be movably inserted into the positioning groove 21 or be separated from the positioning groove 21 along the strip-shaped sliding groove 122, when the bayonet 121 is inserted into the positioning groove 21, the relative position of the trolley main body 10 and the rear wheel frame 12 can be locked by matching and clamping the bayonet 121 and the positioning groove 21, and the rear wheel frame 12 can not be accidentally rotated, folded and contracted relative to the trolley main body 10.

Referring to fig. 4, in order to better mount the rear caster frame 12 on the cart body 10, in this embodiment, the rear caster frame 12 is provided with a connection seat 123 for movably connecting the fixing seat 20, and the fixing seat 20 is provided with a horizontal rotation shaft 22 movably connected with the connection seat 123. By adopting the above structure, it is convenient to mount the rear caster frame 12 on the cart main body 10, and at the same time, the rear caster frame 12 can be better rotated with respect to the cart main body 10.

In order to facilitate the unlocking member 30 to be movably mounted on the cart body 10, it is further preferable that the unlocking member 30 is formed with a movable connection hole 32 which is installed to be matched with the horizontal rotation shaft 22, and the horizontal rotation shaft 22 is movably mounted in the movable connection hole 32. In this embodiment, the protrusion 31 is an arc protrusion eccentrically disposed at one side of the movable connection hole 32, and when the unlocking member 30 rotates around the horizontal rotation shaft 22, the protrusion 31 can abut against the locking pin 121 and push the locking pin 121 to be disengaged from the positioning slot 21, so that the structure is simple and the operation is convenient.

In order to enable the detent 121 to be automatically inserted into the positioning groove 21, in this embodiment, a reset mechanism is further disposed on the rear caster frame 12, and the reset mechanism can apply a force on the detent 121 to drive the detent 121 to be inserted into the positioning groove 21. Preferably, the return mechanism is a spring 40, one end of the spring 40 is connected to the rear caster frame 12, and the other end of the spring 40 is connected to the locking pin 121. The clamping pin 121 can be automatically embedded into the positioning groove 21 by applying force to the clamping pin 121 through the spring 40, and meanwhile, the clamping pin 121 can be prevented from being accidentally separated from the positioning groove 21, so that the clamping between the clamping pin 121 and the positioning groove 21 is firm and reliable.

Referring to fig. 3 and 5, when the rear caster frame 12 and the front caster frame 11 are in the unfolded state, the detent 121 is inserted into the positioning groove 21 and is engaged with the positioning groove 21, so as to lock the relative position of the rear caster frame 12 and the cart body 10, when the rear caster frame 12 is to be folded, a force can be applied to the unlocking member 30, so that the unlocking member 30 rotates around the horizontal rotating shaft 22, the protrusion 31 will abut against the detent 121 and push the detent 121 to move along the strip-shaped sliding groove 122 away from the positioning groove 21, and when the detent 121 is disengaged from the positioning groove 21, the rear caster frame 12 can be pushed to rotate around the horizontal rotating shaft 22 to be folded and contracted to be engaged with the cart body 10, which is simple in structure and convenient to operate.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A fold-up latch structure for a stroller, comprising:

the trolley comprises a trolley main body (10), wherein a front caster frame (11) is arranged at the lower part of the front end of the trolley main body (10), and a front caster (110) is installed on the front caster frame (11);

the rear caster frame (12), the rear caster frame (12) is movably mounted on the handcart main body (10), the rear caster frame (12) can rotate relative to the handcart main body (10), and the rear caster frame (12) is provided with a rear caster (120);

the fixed seat (20) is arranged on the trolley main body (10), and a positioning groove (21) for positioning and clamping is formed in the outer peripheral wall of the fixed seat (20);

a bayonet lock (121) which can be embedded into the positioning groove (21) or separated from the positioning groove (21) is movably arranged on the rear caster frame (12);

the unlocking piece (30) is rotationally arranged on the trolley main body (10), and a protruding part (31) used for pushing the clamping pin (121) to be disengaged from the positioning groove (21) is arranged on the unlocking piece (30).

2. A fold-locking structure for a stroller according to claim 1, wherein:

one end of the rear caster frame (12) connected with the trolley main body (10) is provided with a strip-shaped sliding groove (122), the bayonet lock (121) is movably arranged in the strip-shaped sliding groove (122), and the bayonet lock (121) can reciprocate along the strip-shaped sliding groove (122).

3. A fold-locking structure for a stroller according to claim 2, wherein:

the rear caster frame (12) is provided with a connecting seat (123) for movably connecting the fixed seat (20), and the fixed seat (20) is provided with a horizontal rotating shaft (22) movably connected with the connecting seat (123).

4. A fold-locking structure for a stroller according to claim 3, wherein:

the unlocking piece (30) is provided with a movable connecting hole (32) which is matched with the horizontal rotating shaft (22) for installation, and the horizontal rotating shaft (22) is movably arranged in the movable connecting hole (32).

5. A fold-locking structure for a stroller according to claim 1, wherein:

the reset mechanism is arranged on the rear caster frame (12) and can apply force on the clamping pin (121) to drive the clamping pin (121) to be embedded into the positioning groove (21).

6. A fold-locking structure for a stroller according to claim 5,

the reset mechanism is a spring (40), one end of the spring (40) is connected with the rear caster frame (12), and the other end of the spring (40) is connected with the bayonet (121).