CN217496217U - Children's barrow - Google Patents

Abstract

The utility model relates to a children's shallow, it includes frame, wheel, traction lever structure, wherein the traction lever structure includes traction seat, traction lever, locking piece, and unlocking piece, the traction seat is installed at the front end of frame, and is formed with the interface that link up about on the traction seat, the unlocking piece sets up the grafting tip at the traction lever, wherein when the traction lever is in the grafting state, the grafting tip inserts from the left end or the right-hand member of interface, the unlocking piece exposes in the tip or the lateral part of traction seat, the locking piece will peg graft tip and traction seat and lock relatively; when the traction rod is in a split state, the unlocking piece drives the locking piece to move to unlock, and the traction rod is relatively separated from the traction seat. The utility model discloses an aspect can implement grafting and the split of traction lever fast, makes things convenient for the shallow to switch between traction mode and implementation mode, strengthens user's body and feels; on the other hand, the traction direction is crossed with the plugging direction, the probability that the traction rod is accidentally pulled out of the traction seat is greatly reduced, and the traction safety is improved.

Description

Children's barrow

Technical Field

The utility model belongs to children's articles for use field, concretely relates to children's shallow.

Background

The running vehicle belongs to one of the baby strollers, and compared with the common baby strollers, the running vehicle is provided with a traction rod structure, a user is connected with the running vehicle or a bicycle through the traction rod structure to drive the running vehicle to move forward, and the running vehicle has the advantages of being small in size and simple to use.

At present, the traction rod structure that the treadmill adopted is including the traction seat of location on the treadmill frame, from the tip dismouting is in traction rod on the traction seat and with traction seat and locking piece and the unlocking piece of traction rod relative locking, wherein the traction rod is installed on the traction seat from the tip, need control the unlocking piece, wait to install the back that targets in place, the locking piece locking, at this moment, the traction rod can pull the treadmill forward, on the contrary, when needs push away the treadmill, need control the unlocking piece in order to order about the locking piece unblock, then demolish the traction rod from the traction seat, consequently, it has following defect:

1. the unlocking piece is required to be operated and controlled no matter the running vehicle is locked or unlocked, so that the operations of the dismounting process and the locking process of the traction rod are very complicated and tedious, and the body feeling of switching the pushing mode and the traction mode of the running vehicle is influenced;

2. most of the traction rods are inserted in the front-back direction, and then traction is also movement in the front-back direction, so that the part bearing stress is completely positioned in the locking piece in the traction process, therefore, the locking piece is easy to damage, and once normal locking is not realized, the locking piece accidentally falls off, and the danger is very high.

Disclosure of Invention

The utility model aims to solve the technical problem that overcome prior art not enough, provide a modified children's shallow.

For solving the technical problem, the utility model discloses a following technical scheme:

a children's barrow comprises a frame, wheels and a traction rod structure, wherein the traction rod structure comprises a traction seat, a traction rod, a locking piece and an unlocking piece, the traction seat is installed at the front end of the frame, a plug-in port which extends along the left-right direction of the frame and is communicated with the left side and the right side is formed in the traction seat, the unlocking piece is arranged on the traction rod, the traction rod is in a plug-in state and a disassembly state, when the traction rod is in the plug-in state, the plug-in end part of the traction rod is inserted from the left end or the right end of the plug-in port, the unlocking piece is exposed out of the end part or the side part of the traction seat, and the plug-in end part and the traction seat are locked relatively by the locking piece; when the traction rod is in a split state, the unlocking piece drives the locking piece to move and unlock, and the traction rod is relatively separated from the traction seat.

Preferably, a locking groove is formed in one of the traction seat and the plugging end, the locking piece is matched with the locking groove to be locked or unlocked, the locking piece is movably arranged on the other one of the traction seat and the plugging end, and the unlocking piece is used for driving the locking piece to move to be separated from the locking groove to be unlocked. Thus, the locking piece and the locking groove can be conveniently locked or unlocked relatively.

According to a specific implementation and preferred aspect of the utility model, the locked groove is formed on the traction seat, and the locking piece includes the spring bolt of connecting on the grafting tip through the pivot, keeps the ejecting elastic component of spring bolt elasticity, and wherein the spring bolt locks or unblock with the locked groove cooperation, and the unblock piece is used for ordering about the locking piece round pivot and compression elastic component. That is, when the plugging end is inserted into the plugging port, the spring bolt is pressed by the traction seat to rotate inwards and compress the elastic element, and when the spring bolt loses the contact of the traction seat, the spring bolt resets and is plugged into the locking groove to lock the traction seat and the plugging end relatively; the unlocking piece is pressed, the spring bolt compresses the elastic piece and is separated from the locking groove, the traction seat and the insertion end part are unlocked relatively, and the traction rod and the traction seat are locked in a pressing unlocking and insertion touch mode, so that the traction rod and the traction seat are very convenient to insert.

Preferably, the spring bolt has a tongue end, a connecting end and a contact end, wherein the tongue end is exposed from one side of the inserting end and is matched with the lock groove, the connecting end is rotatably connected to the inserting end through a pivot, and two ends of the elastic element are respectively abutted against the contact end and the inserting end or two ends of the elastic element are respectively abutted against the contact end and the traction rod. The elastic interference is adopted to keep the movement trend of the lock tongue, so that the lock tongue can automatically reset, and the locking and unlocking operations are convenient.

In this example, the locked groove is located the bottom surface of traction seat, and the spring bolt stretches out the setting from the bottom of grafting tip. The utility model is convenient to implement, and is not easy to be seen, and the integral aesthetic degree is not influenced.

According to a further embodiment and preferred aspect of the invention, the unlocking element is located at the insertion end of the plugging end and emerges from the end of the plugging port when the traction rod is in the plugging state. By means of the arrangement, in the unlocking process, after the unlocking piece is pressed inwards, unlocking can be achieved, and pressing force can be provided to push the traction rod out of the self-plugging port.

In this example, a window matching with the exposed part of the unlocking piece is formed on the traction seat far away from the insertion end, and when the traction rod is in the plugging state, the unlocking part of the unlocking piece is exposed from the window. That is to say, through the design of window, the accurate cartridge of traction seat and traction lever of being convenient for simultaneously makes things convenient for the unblock operation, but also promotes whole handsome in appearance.

Preferably, the unlocking piece comprises an unlocking button which moves along the left-right direction and is arranged at the insertion end of the insertion end, an unlocking pin which moves synchronously with the unlocking button and can toggle the lock tongue to rotate around a pivot, and a resetting elastic piece which is arranged in the traction rod and extends along the movement direction of the unlocking button, wherein two ends of the resetting elastic piece respectively abut against the insertion end and the unlocking button, and the unlocking button is kept in an outward ejection trend. Therefore, after the unlocking button is touched inwards, the lock tongue is unlocked in a linkage mode and separated from the lock groove, namely, the unlocking pin is unlocked in a linkage mode through synchronous movement, and operation is very convenient.

Furthermore, a movable groove is formed in the lock tongue, the unlocking pin is located in the movable groove, and when the unlocking button moves inwards or outwards, the unlocking pin is attached to the bottom wall of the movable groove to stir or release the lock tongue. Therefore, the movement of the lock tongue is more stable, and the phenomenon that the lock tongue is locked due to movement is avoided.

In the embodiment, when the traction rod is in a splicing state, the tongue end is matched and locked with the locking groove, the groove bottom wall of the movable groove is obliquely arranged, the unlocking pin is positioned at the lowest end of the movable groove, and the reset elastic piece and the elastic piece are vertically arranged. Once in the locked state, the closure of spring bolt and locked groove is more firm, and simultaneously, the reset of spring bolt and unblock button can be independent respectively and mutually support, and especially in the spring bolt resets, the elastic component that resets can also drive the lockpin and progressively release the spring bolt to increase the spring bolt dynamics that resets, ensure the steadiness of spring bolt and locked groove locking.

In addition, be equipped with the traction joint with interface matching at the grafting tip of traction lever, the traction joint is including the inner core that is located the traction lever inside, the cover of cover in the traction lever periphery is established, wherein form on the cover and dodge the hole, the inner core is including location core and activity core, the pivot of spring bolt is installed on the location core, and the tongue end of spring bolt can wear out the setting in dodging the hole certainly, the location core, the traction lever, and the fixed setting of dustcoat, the activity core is fixed and is connected with the unblock button with the unblock round pin, when the locking piece locks, the elastic component passes the location core and both ends connect at the traction lever and the end of touching, reset the elastic component both ends and contradict between location core and activity core. Therefore, the installation of the elastic piece and the reset elastic piece is facilitated, and meanwhile, the firmness of matching the traction joint and the inserting port is improved.

Preferably, a window sheath is formed at the insertion end of the outer cover, a sealing edge strip arranged along the circumferential direction is further arranged on the periphery of the outer cover, when the traction rod is in the plugging state, the window sheath penetrates out of the window or abuts against the inner wall of the window, the exposed part of the unlocking piece penetrates out of the window, and the sealing edge strip closes the insertion port of the plugging port. Therefore, the two ends of the socket can be relatively closed, the overall attractiveness in a traction mode is improved, and inconvenience in insertion caused by the fact that external objects enter the socket is avoided.

Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage:

on one hand, the utility model can quickly implement the splicing and splitting of the traction rod, is convenient for the cart to be switched between a traction mode and a pushing mode, and enhances the user feeling; on the other hand, the traction direction is crossed with the plugging direction, the probability that the traction rod is accidentally pulled out of the traction seat is greatly reduced, the safety of a traction mode is improved, and in addition, the traction device is simple in structure and low in cost.

Drawings

Fig. 1 is a schematic view (first view angle) of the treadmill of the present invention;

fig. 2 is a schematic structural view (second view angle) of the treadmill of the present invention;

FIG. 3 is a schematic view of the treadmill of the present invention;

FIG. 4 is a schematic front view of FIG. 3;

FIG. 5 is an enlarged cross-sectional view taken along line A-A of FIG. 4;

FIG. 6 is a left side schematic view of FIG. 4;

FIG. 7 is a schematic sectional view taken along line B-B in FIG. 6;

wherein: 1. a frame;

2. a wheel;

3. a drawbar structure; 30. a traction seat; 300. an interface; 30a, a window; 30b, a lock groove; 31. a draw bar; 310. an inserting end part; 311. an extension link; 312. a pull rod; 313. an external connector; 32. a traction sub; 320. an inner core; a. positioning the core body; b. a movable core; 321. a housing; c. avoiding holes; t, a window sheath; f. sealing edge strips; 33. a locking member; 330. a latch bolt; d1, lingual end; d2, a connecting end; d3, abutting end; h. a movable groove; 331. an elastic member; s, a pivot; 34. unlocking the lock; 340. an unlock button; 341. releasing the lock pin; 342. the elastic member is reset.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature. It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, the stroller (running vehicle) of the present embodiment includes a frame 1, wheels 2, and a drawbar structure 3.

Specifically, the traction rod structure 3 includes a traction seat 30 connected to the bottom of the front end of the frame 1, a traction rod 31, a traction joint 32 disposed at the insertion end of the traction rod 31, a locking member 33 for locking the traction joint 32 and the traction seat 30, and an unlocking member 34.

The fifth wheel 30 extends along the width direction (i.e., left-right direction) of the frame 1, and is fixedly coupled to the bottom of the front end of the frame 1 by a coupling bolt or other external member.

In this embodiment, the socket 300 is formed on the traction seat 30 and extends along the longitudinal direction thereof, wherein the socket 300 is formed in a hole shape and penetrates left and right.

Specifically, the left end of the socket 300 is an insertion port, the right end is a through port, the traction joint 32 is inserted into the socket 300 from left to right, and the locking member 33 is triggered to move to lock the traction joint 32 and the traction base 30 relatively, and the unlocking member 34 is exposed from the right end of the socket 300.

That is, the traction rod 31 has a plugging state and a disconnecting state, when the traction rod 31 is in the plugging state, the traction joint 32 is inserted from the left end of the plugging interface 300, the unlocking button of the unlocking piece 34 is exposed at the right end of the traction seat 30, and the locking piece 33 locks the traction joint 32 and the traction seat 30 relatively; when the traction rod 31 is in the disassembly state, the unlocking piece 34 drives the locking piece 33 to move and unlock, and the traction rod 31 is separated from the traction seat 30 relatively.

In this example, the drawbar 31 includes a socket end 310, an extension link 311 extending forward from an outer end of the socket end 310, a drawbar 312 bent inward from a front end of the extension link 311, and an outer coupling 313 provided at an inner end of the drawbar 312, wherein the drawbar 32 is mounted on the socket end 310, and the outer coupling 313 connects the drawbar 31 to other towing equipment.

As shown in fig. 3, the traction joint 32 includes an inner core 320 located inside the insertion end portion 310, and an outer cover 321 covering the periphery of the insertion end portion 310, wherein the inner core 320 includes a positioning core a and a movable core b, an avoiding hole c is formed on the outer cover 321, the positioning core a, the insertion end portion 310, and the outer cover 321 are fixedly connected by a pin, and the movable core b is relatively movably connected in the positioning core a along the length direction of the positioning core a.

A locking groove 30b is formed at the bottom of the traction seat 30, and a locking member 33 is rotatably mounted on the plugging end portion 310, wherein the locking and unlocking of the plugging end portion 310 and the traction seat 30 are implemented by the matching of the locking member 33 and the locking groove 30 b.

In this embodiment, a window sheath t is formed at the right end of the housing 321, and the exposed portion of the unlocking element 34 is disposed through the window sheath t, so that the unlocking element 34 is prevented from being touched during the insertion process.

Meanwhile, a window 30a is formed at the right end of the socket 300, the exposed part of the unlocking piece 34 is matched with the window 30a and penetrates out of the window 30a, and the exposed part of the unlocking piece 34 and the window 30a close the right end of the socket 300.

A sealing edge f is formed on the outer cover 321 in the circumferential direction, wherein when the locking piece 33 and the locking groove 30b are in locking engagement, the outer cover 321 is inserted from the window sheath t and abuts against the inner wall of the window 30a, the exposed end of the unlocking piece 34 protrudes from the window 30a, and the sealing edge f closes the insertion end (left end) of the insertion port 300. Therefore, in the plugging state, the left end and the right end of the plugging port 300 are in a relatively closed state, so that the structure layout is reasonable, the whole plug-in connector is hidden and protected, and the whole appearance is attractive.

As shown in fig. 4 and 5, the locking member 33 includes a latch 330 pivotally connected to the positioning core a via a pivot s, and an elastic member 331 for keeping the latch 330 elastically ejected.

Specifically, the latch 330 has a tongue end d1, a connection end d2 and an interference end d3, wherein the tongue end d1 is exposed from the avoiding hole c, and when the traction connector 32 is inserted into the socket 300, the latch 330 is inserted into the locking groove 30b under the interference of the elastic element 331, so as to relatively lock the traction seat 30 and the traction connector 32 (or the traction seat 30 and the insertion end 310); the connecting end d2 is pivotally connected to the positioning core a by a pivot s, and the elastic member 331 passes through the positioning core a and has two ends respectively connected to the plugging end 310 and the abutting end d 3.

As shown in fig. 6 and 7, the unlocking member 34 includes an unlocking button 340 provided at the insertion end of the splicing end 310 to move in the left-right direction (in-and-out movement), an unlocking pin 341 moving in synchronization with the unlocking button 340 and capable of turning the latch tongue 330 about a pivot s, and a return spring 342 provided in the drawbar 31 and extending in the movement direction of the unlocking button 340. Thus, after the unlocking button 340 is pressed inward, the unlocking pin 341 can toggle the locking tongue 330 to rotate, so that the locking tongue 330 is separated from the locking groove 30b for unlocking, and after the unlocking button 340 is released, the unlocking button 340 is restored to the original position under the elastic reset of the reset elastic piece 342.

Specifically, the pull tab 32 is inserted into the connector 300 from left to right and interferes with the connector during insertion

The tongue end d1 of the latch 330 turns inward until the socket 30 loses the force of the latch 330, the tongue end d1 resets and plugs into the lock slot 30b, the unlock button 340 protrudes from the window 30a, and at this time, the latch 330 is locked with the lock slot 30 b.

When unlocking, only the unlocking button 340 needs to be pressed inwards, the unlocking pin 341 is triggered by the unlocking button 340 to move to toggle the locking tongue 330 to rotate around the pivot, and the locking tongue 330 is separated from the locking groove 30b for unlocking.

In order to facilitate the installation of the elastic member 331 and the return elastic member 342 and the unlocking of the unlocking member 34 and the locking member 33, in this embodiment, the movable core b is fixed to the unlocking pin 341 and connected to the unlocking button 340, and two ends of the elastic member 342 abut against between the positioning core a and the movable core b, so that the positions of the movable core b and the unlocking button 340 are limited by the elastic contact of the elastic member 342, and the unlocking button 340 is ensured to remain elastically exposed at the end of the housing 321. Thus, after the unlocking button 340 is pressed inwards, the unlocking pin 341 can toggle the locking tongue 330 to rotate, so that the locking tongue 330 is separated from the locking groove 30b for unlocking, and after the unlocking button 340 is released, under the elastic reset of the reset elastic piece 342, the unlocking button 340 and the movable core body b recover the original positions.

In this embodiment, a movable groove h is formed in the latch 330, and the release pin 341 is located in the movable groove h and attached to a bottom wall of the movable groove h to move or release the latch 330. Thus, the striking and the releasing of the lock tongue are convenient.

In this example, when the tongue end d1 is in the pop-up state, the groove bottom wall of the movable groove h is inclined upward and downward, and the release pin 341 is located at the lowermost end of the movable groove h. At the moment, the lock tongue is in a completely erupting state, and once the lock tongue is in a locking state, the lock tongue and the lock groove are locked more firmly.

In addition, when the tongue end d1 is exposed from the bottom of the cover 321, the restoring elastic member 342 and the elastic member 331 are vertically disposed. The bolt and the reset of unblock button can be independent respectively like this and cooperate each other, especially in the bolt resets, and the spring element that resets drives the lockpin and progressively releases the bolt to increase the bolt dynamics of resetting, ensure the steadiness of bolt and locked groove locking.

In order to avoid relative rotation between the outer cover 321 and the tractor 30, the cross section of the socket 300 may be formed into a polygonal (regular polygon or non-equilateral polygon) structure, the shape of the outer cover 321 is completely matched with the shape of the socket 300, and the sealing strips f are also distributed along the circumference of the outer cover 321.

In summary, the present embodiment has the following advantages:

1) the traction direction is vertical to the plugging direction, so that the probability of accidental dropping of the traction rod from the traction seat is greatly reduced, and the safety of a traction mode is improved;

2) the locking piece is triggered to rotate and elastically reset in a one-way inserting and matching mode, so that the traction seat and the traction rod are relatively locked without pressing the unlocking piece; meanwhile, the exposed unlocking piece is matched with the locking piece, and the lock tongue is driven to rotate and is separated from the lock groove for unlocking under the stirring of the unlocking pin, so that the unlocking operation is convenient, and the integral appearance is attractive;

3) the direction of the unlocking pressing force is the same as the disassembly and assembly direction of the traction rod, so that the disassembly and assembly of the traction rod are further facilitated, the controllability of switching the traction mode and the pushing mode is strong, and meanwhile, the structure is simple and the cost is low;

4) in the plugging state, the left end part and the right end part of the plugging port are in a relatively closed state, so that the structure layout is reasonable, the whole structure is hidden and protected, and the integral appearance is attractive;

5) the unlocking piece and the lock tongue can automatically reset under the condition of losing external force, so that the locking and unlocking operation is facilitated, especially in the process of resetting the lock tongue, the reset elastic piece drives the lock pin to gradually release the lock tongue, the reset force of the lock tongue is increased, and the locking stability of the lock tongue and the lock groove is ensured.

The present invention has been described in detail, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the protection scope of the present invention should not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides a children's shallow, its includes frame, wheel, traction rod structure, wherein traction rod structure includes traction seat, traction lever, locking piece, and unlocks the piece, its characterized in that: the traction seat is installed at the front end of the frame, a plug-in port which extends along the left-right direction of the frame and is communicated with the left side and the right side is formed in the traction seat, the unlocking piece is arranged on the traction rod, the traction rod has a plug-in state and a disassembly state, when the traction rod is in the plug-in state, the plug-in end of the traction rod is inserted from the left end or the right end of the plug-in port, the unlocking piece is exposed out of the end or the side of the traction seat, and the locking piece locks the plug-in end and the traction seat relatively; when the traction rod is in a split state, the unlocking piece drives the locking piece to move and unlock, and the traction rod is relatively separated from the traction seat.

2. The stroller of claim 1, wherein: the traction seat and one of the inserting end parts are provided with a locking groove, the locking piece is matched with the locking groove to be locked or unlocked, the locking piece is movably arranged on the other one of the traction seat and the inserting end parts, and the unlocking piece is used for driving the locking piece to move to be separated from the locking groove to be unlocked.

3. The stroller of claim 2, wherein: the locking piece comprises a locking tongue connected to the inserting end through a pivot and an elastic piece for keeping the locking tongue elastically pushed out, wherein the locking tongue is matched with the locking groove to lock or unlock, and the unlocking piece is used for driving the locking piece to rotate around the pivot and compress the elastic piece.

4. The stroller of claim 3, wherein: the spring bolt is provided with a tongue end, a connecting end and a butting end, wherein the tongue end is exposed from one side of the inserting end and matched with the locking groove, the connecting end is connected to the inserting end in a rotating mode through a pivot, and two ends of the elastic piece respectively butt against the butting end and the inserting end or two ends of the elastic piece respectively butt against the butting end and the traction rod.

5. The stroller of claim 4, wherein: the unlocking piece is positioned at the insertion end of the insertion end, and when the traction rod is in the insertion state, the unlocking piece protrudes out of the end of the insertion port.

6. The stroller of claim 5, wherein: the unlocking piece comprises an unlocking button which moves along the left-right direction and is arranged at the insertion end, an unlocking pin which moves synchronously with the unlocking button and can toggle the lock tongue to rotate around the pivot, and a reset elastic piece which is arranged in the traction rod and extends along the movement direction of the unlocking button, wherein two ends of the reset elastic piece respectively abut against the insertion end and the unlocking button, and the unlocking button is kept in an outward ejecting trend.

7. The stroller of claim 6, wherein: the lock bolt is internally provided with a movable groove, the unlocking pin is positioned in the movable groove, and when the unlocking button moves inwards or outwards, the unlocking pin is attached to the groove bottom wall of the movable groove to shift or release the lock bolt.

8. The stroller of claim 7, wherein: when the traction rod is in a splicing state, the tongue end is matched and locked with the locking groove, the groove bottom wall of the movable groove is obliquely arranged, the unlocking pin is positioned at the lowest end of the movable groove, and the reset elastic piece and the elastic piece are vertically arranged.

9. The stroller of claim 6, wherein: the grafting tip of traction lever be equipped with the traction joint that interface matches, traction joint including being located inside inner core, the cover of traction lever periphery is established the dustcoat, wherein form on the dustcoat and dodge the hole, the inner core is including location core and activity core, the pivot of spring bolt is installed on the location core, just the tongue end of spring bolt can certainly it wears out the setting in dodging the hole, the location core the traction lever reaches the dustcoat fixed set up, the activity core with the unblock round pin is fixed and with the unblock button is connected, when the locking piece locking, the elastic component passes location core and both ends are connected the traction lever with the butt end, the elastic component that resets is contradicted both ends and is in between location core and the activity core.

10. The stroller of claim 9, wherein: a window sheath is formed at the insertion end part of the outer cover, a sealing edge strip arranged along the circumferential direction is further arranged on the periphery of the outer cover, when the traction rod is in an insertion state, the window sheath penetrates through the window or abuts against the inner wall of the window, the exposed part of the unlocking piece penetrates out of the window, and the sealing edge strip closes the insertion port of the insertion port.

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