CN104326007B - Locking mechanism for children's stroller and children's stroller - Google Patents

Abstract

The invention discloses a kind of locking mechanism for children trolley and children trolley.Children trolley includes vehicle frame, vehicle frame includes the first support, second support, 3rd support, locking mechanism includes housing, rotate the locking piece being arranged at the second support, for controlling the operating parts of locking piece activity, first support, second support, 3rd support phase co-rotation connects, first support, second support, at least at the first support in 3rd support, offer porose on 3rd support or on edge, be formed with outward extending projection, two holes can be connected and overlap to form limiting section to form lockhole or two projections, locking piece has a sticking department matching with lockhole or limiting section, operating parts has the first contact site that can contact with housing, when rotating operation part, first contact site abuts housing thus drives locking piece to rotate and make sticking department depart from lockhole or limiting section.

Description

Locking mechanism for children's stroller and children's stroller

technical field

The invention relates to a locking mechanism for a child's stroller and the child's stroller.

Background technique

In the prior art, children's strollers generally include a vehicle frame with an unfolded position and a folded position, a front wheel assembly arranged at the bottom front of the vehicle frame, a rear wheel assembly arranged at the bottom rear of the vehicle frame, and the The vehicle frame is locked in a vehicle frame locking mechanism under the unfolded position, and a seat arranged on the vehicle frame. During the folding process of the frame, the seat needs to be folded accordingly, which is prone to the problem that the frame cannot be folded or the folding is not smooth due to the involvement of the cloth cover of the seat. There are various types of frames of existing children's strollers, the number of rods of the frame is different, the connection relationship between the rods, and the connection position are different, so the folding principles and folding methods are different. Convenient and smooth folding is the goal pursued by designers of strollers.

Contents of the invention

In view of the above problems, the object of the present invention is to provide a locking mechanism for a child stroller and a child stroller, which are simple in structure and can be folded smoothly and conveniently.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A children's stroller, comprising a vehicle frame with an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly arranged at the bottom of the vehicle frame, the vehicle frame includes a first bracket, a second bracket, a third bracket and A locking mechanism for locking the vehicle frame in the unfolded position, the front wheel assembly and the rear wheel assembly are respectively installed on the two components of the first bracket, the second bracket, and the third bracket, and another component Used as the push rod of the stroller, the locking mechanism includes a housing, a locking piece that is rotatably connected to the second bracket, an operating piece for controlling the action of the locking piece, the first bracket, the second The two brackets and the third bracket are connected coaxially and rotated or are connected in a relatively rotatable manner. The first bracket, the second bracket, and the third bracket are at least provided with holes on the first bracket and the third bracket or in the A protrusion extending outward is formed on the edge, and the two holes are connected to form a lock hole or the two protrusions are overlapped to form a limiting part, and the locking member has a The locking part matched with the limiting part, when the locking mechanism is in the locked state, the locking part of the locking part is inserted into the lock hole or against the side of the limiting part, when the locking mechanism is in the unlocked state, the locking part is out of the lock hole or The limiting part is used to release the first bracket, the second bracket, and the third bracket. The operating part has a first contact part that can be in contact with the housing. When the operating part is rotated, the first The contact portion abuts against the housing to drive the locking member to rotate so that the locking portion disengages from the locking hole or the limiting portion.

Preferably, when the first bracket, the second bracket, and the third bracket are rotationally connected coaxially, the lock hole deviates from the rotation axis of the first bracket, the second bracket, and the third bracket.

Preferably, the first contact portion is in an arc shape protruding outward.

Preferably, the engaging portion has a second contact portion in contact with the second bracket, and the second contact portion is in an arc shape protruding outward.

Preferably, the locking mechanism includes a resetting member disposed between the locking member and the housing for resetting the locking portion.

Preferably, the first bracket has a first connecting piece, the second bracket has a second connecting piece, the third bracket has a third connecting piece, the housing is hollow, and the first A connecting piece, a second connecting piece, and a third connecting piece are located in the housing, and the two holes are respectively opened on the first connecting piece and the third connecting piece, and a hole is also opened on the second connecting piece , the holes on the first connecting piece, the second connecting piece and the third connecting piece are connected to form the locking hole, and a locking groove matching the locking portion is provided on the housing, when the vehicle frame When in the deployed position, the locking part is inserted into the locking hole and the locking groove.

More preferably, the first connecting part, the second connecting part and the third connecting part are rotatably connected to the housing through a second pivot.

Preferably, when the vehicle frame is in the unfolded position, one end of the first contact portion close to the locking member is in contact with the housing, and when the vehicle frame is in the folded position, the first contact portion is away from One end of the locking piece is in contact with the housing.

A locking mechanism for a children's stroller, the children's stroller includes a vehicle frame with an unfolded position and a folded position, a front wheel assembly and a rear wheel assembly arranged at the bottom of the vehicle frame, the vehicle frame includes a first bracket , a second bracket, a third bracket, and a locking mechanism for locking the vehicle frame in an unfolded position, and the front wheels are respectively installed on two components in the first bracket, the second bracket, and the third bracket Assembly and rear wheel assembly, another part is used as the push rod of the children's stroller, the locking mechanism includes a housing, a locking piece that is rotatably connected to the second bracket, and an operation for controlling the action of the locking piece The first bracket, the second bracket, and the third bracket are connected coaxially and rotatably or are connected in a relatively rotatable manner. Among the first bracket, the second bracket, and the third bracket, at least the first bracket, the third bracket A hole is opened on the third bracket or an outwardly extending protrusion is formed on the edge, and the two holes are connected to form a locking hole or the two protrusions are overlapped to form a limiting part. The locking part has a locking part that matches the lock hole or the limiting part. When the locking mechanism is in the locked state, the locking part of the locking part is inserted into the locking hole or abuts against the side of the limiting part. When the locking mechanism is in the In the unlocked state, the locking part breaks away from the lock hole or the limiting part, so that the first bracket, the second bracket, and the third bracket are released. The operating part has a first contact part that can be in contact with the housing. When the operating member is in operation, the first contact portion abuts against the housing so as to drive the locking member to rotate to disengage the locking portion from the locking hole or the limiting portion.

The present invention adopts the above structure, and has the following advantages compared with the prior art: the vehicle frame includes the first bracket, the second bracket and the third bracket, and the vehicle frame can be locked in the unfolded position by the locking mechanism, and the structure of the stroller is simple; By operating the operating part to drive the locking part to rotate to unlock the locking mechanism, the first bracket, the second bracket and the third bracket can rotate freely, and the first bracket, the second bracket and the third bracket are close together to realize the folding of the stroller , folds smoothly and conveniently.

Description of drawings

Attached picture 1 It is a structural schematic diagram of the vehicle frame of the present invention in the unfolded position;

Attached picture 2 It is a structural schematic diagram of the vehicle frame of the present invention in a folded position;

Attached picture 3 It is a structural schematic diagram when the locking mechanism of the present invention is locked;

Attached picture 4 It is a structural schematic diagram of the locking mechanism of the present invention when it is unlocked.

in: 10 , frame; 1 , the first bracket; 2 , the second bracket; 3 , the third bracket; 4 , locking mechanism; 41 ,case; 411 , front shell; 4111 , through hole; 412 , rear shell; 4121 , lock slot; 413 , the second pivot; 42 , the first connector; 43 , the second connector; 431 , the first pivot; 44 , the third connector; 45 ,keyhole; 46 , locking piece; 461 , locking part; 462 , the third pivot; 47 , operating parts; 471 , card joint; 472 , the first contact part; 473 , the second contact portion; 48 , Reset piece;

20 , front wheel assembly; 30 , Rear wheel assembly.

detailed description

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Attached picture 1 to attached image 4 Shown is a foldable stroller. Combined with the accompanying drawings 1 and attached 2 As shown, the stroller includes a frame with an unfolded position and a folded position 10 , set on the frame 10 bottom front wheel assembly 20 and rear wheel assembly 30 . the frame 10 Includes first bracket 1 , the second bracket 2 , the third bracket 3 and for placing the frame 10 Locking mechanism locked in deployed position 4 , the first bracket 1 , the second bracket 2 , the third bracket 3 The front wheel assembly is installed on the two components respectively 20 and rear wheel assembly 30 , the other part is used as the push rod of the stroller. Specifically in this embodiment, the rear wheel assembly 30 , front wheel assembly 20 respectively mounted on the second bracket 2 , the third bracket 3 , the second bracket 2 and third bracket 3 As a rear and front wheel support for a stroller, the first support 1 As a push rod for a stroller.

Combined with the accompanying drawings 3 and attached 4 shown, the first bracket 1 has a first connector 42 , the second bracket 2 has a second connector 43 , the third bracket 3 has a third connector 44 . first connector 42 , the second connector 43 , the third connector 44 respectively fixedly connected to the first bracket 1 Lower end, second bracket 2 Upper end, third bracket 3 upper end. the locking mechanism 4 including hollow shell 41 , the first connector 42 , the second connector 43 , the third connector 44 , through a first pivot 431 Rotation is set on the second connecting piece 43 lock 46 , through a third pivot 462 pivotally connected to the lock 46 for controlling the lock 46 action element 47 . The first connector 42 , the second connector 43 , the third connector 44 , lock 46 located in the housing 41 Inside, the housing 41 There are provided for the operation 47 through hole 4111 , the operator 47 part of the case pierces the 41 For operation by the user, this part faces away from the lock 46 direction extension. Specifically, the housing 41 including front shell 411 and back shell 412 , front shell 411 and back shell 412 A cavity is formed between the first connector 42 , the second connector 43 , the third connector 44 set in the cavity and can be opposite to the housing in the cavity 41 turn. The first connector 42 , the second connector 43 , the third connector 44 They can be connected in a coaxial rotation manner, and can also be connected in pairs in a relative rotation manner. Specifically in this embodiment, the first connector 42 , the second connector 43 , the third connector 44 through a second pivot 413 rotationally connected to the front housing 411 and back shell 412 between.

The first connector 42 , the second connector 43 , the third connector 44 There is a hole on the top, and the three holes are connected to form a keyhole 45 , the backshell 412 lock slot 4121 . the lock 46 having opposite first and second ends, the locking member 46 The first end is bent to form a keyhole with the 45 and lock slot 4121 Matching locking part 461 . first connector 42 , the second connector 43 , the third connector 44 part of the sheet and along the second pivot 413 The axial directions are stacked one after the other. When the locking mechanism is in the locked state, the locking member 46 the locking part 461 Insert keyhole 45 , when the locking mechanism is in the unlocked state, the locking part 461 out of keyhole 45 , so that the first bracket 1 , the second bracket 2 , the third bracket 3 Released, the three can rotate relative to each other. In some other embodiments, the first connector 42 , the third connector 44 can be located on the second connector 43 on the same side as the first connector only 42 , the third connector 44 A hole is opened on the top, and the two holes are connected to form a keyhole. 45 , the locking part 461 Insert keyhole 45 The three brackets can be locked together.

In addition to the above setting methods, it can also be used on the first bracket 1 the first connector 42 and third bracket 3 The third connector 44 Each of the edges is formed with a protrusion extending radially outward, and the two protrusions are overlapped to form a limiting portion. When the frame 10 In the unfolded position, the two protrusions overlap to form a limiting part, and the locking part 461 against the side of the limiter to stop the first bracket 1 and third bracket 3 relative to the second bracket 2 rotate so that the first bracket 1 , the second bracket 2 and third bracket 3 relative expansion; when the frame 10 In the folded position, the locking portion 461 Turn and disengage from the limit part, the first bracket 1 and third bracket 3 relative to the second bracket 2 Turn to fold.

In this embodiment, since the first bracket 1 , the second bracket 2 , the third bracket 3 via the second pivot 413 phase coaxial rotational connection, so the keyhole 45 Must deviate from first bracket 1 , the second bracket 2 , the third bracket 3 The axis of rotation is the second pivot 413 , and form a keyhole 45 The three holes are respectively around the second pivot 413 turn.

The operating part 47 via the third pivot 462 rotationally connected to the locking member 46 the second end of the first pivot 431 located in the lock 461 and the third pivot 462 between. Specifically, the front shell 411 and the second bracket 2 A space is formed between the locking pieces 461 Located in this space, the operating member 47 One end of the front case has a movable 411 and the second bracket 2 snap joint 471 , the front shell 411 through hole 4111 , the operator 47 the other end of the through hole through the 4111 extends to the housing 41 externally for user to operate, the clamping part 471 through a third pivot 462 rotationally connected to the locking member 46 the second end of . when the frame 1 In the unfolded position, the operating member 47 located in the housing 41 the outer part along the locking member away from the 46 direction extension. Corresponding specifically to the accompanying drawings 3 in the housing 41 This part of the operator 47 Extend down.

The clamping part 471 has a front case with the 411 The first contact portion where the inner wall of the 472 , one and the second bracket 2 or second connector 43 second contact part 473 , the first contact 472 In the shape of an arc protruding from the middle, the second contact portion 473 It is arc-shaped with the middle protruding outward. When operating the unlock 47 When turning from bottom to top, due to the first contact part 472 and front shell 411 abutment so that the unlocked pieces 47 operation is smooth. Specifically in the card joint 471 During the rotation: the first contact part 472 with the front shell 411 contact close to the locking member 46 One end of the first contact position and away from the locking member 46 the second contact position. The first contact position and the second contact position are respectively located on the first contact portion 472 the two ends of the frame, when the frame transforms from the unfolded state to the folded state, the first contact portion 472 from the first contact position with the front shell 411 contact gradually and smoothly transitions to the second contact position with the front shell 411 touch. In the present invention, during the transformation of the vehicle frame between the folded state and the unfolded state, the second contact portion 473 Can be used with a second bracket 2 The contact may or may not be in contact and it does not affect the operation of the locking mechanism.

The clamping part 471 has a second bracket that can be used with the 2 A first contact position and a second contact position that are in contact with each other, and a third contact position and a fourth contact position that can be in contact with the front case. The distance between the first contact position and the axis line of the third pivot is greater than the distance between the second contact position and the axis line of the third pivot, and the distance between the third contact position and the third pivot The distance between the axis lines is smaller than the distance between the fourth contact position and the axis lines of the third pivot. see attached image 3 , when the first contact position and the second support 2 contact, the locking part 461 Insert keyhole 45 inside, the third contact location is with the front case 411 touch. see attached image 4 , when the second contact position with the second support 2 contact, the locking part 461 out of keyhole 45 , the fourth contact location with the front case 411 touch. The clamping part in this embodiment 471 Referring to the cam design, which is changed with the second bracket 2 The contact position, the third pivot 462 The distance from the second bracket changes accordingly, thereby driving the locking piece 46 the locking part 461 Detach, insert keyhole 45 Inside.

the lock 46 the first end and the housing 41 There is a locking piece between the 46 reset parts 48 . Specifically in this embodiment, the reset member 48 It is a compression spring, and the top of the compression spring is set on the front shell 411 and lock 46 between the first ends.

Combined with the accompanying drawings 1 and attached 3 shown, when the frame 10 In the deployed position, the locking mechanism 4 lock, the locking part 461 Insert the lock slot 4121 and keyhole 45 Inside, the first bracket 1 , the second bracket 2 and third bracket 3 relative expansion, reset 48 Unstressed, in the initial state.

Combined with the accompanying drawings 3 and attached 4 shown, when the frame 10 In the folded position, during unfolding and folding, the locking mechanism 4 unlocked, the locking part 461 out of lock slot 4121 and keyhole 45 , the first bracket 1 , the second bracket 2 and third bracket 3 Relatively rotatable and close together, reset 48 is compressed.

When the stroller is folded, pull the operating member to the right, up, up right or down right 47 , drives the lock 46 The second end of the front shell faces away from the 411 direction of rotation, the lock 46 the first end of the front shell 411 turn, lock 461 out of lock slot 4121 and keyhole 45 , reset piece 48 Compression, the three connecting parts can rotate relative to each other, that is, the first bracket 1 , the second bracket 2 , the third bracket 3 They can be rotated relative to each other. When they are rotated until they are close to each other, the frame 10 The fold is complete. When the stroller is unfolded, the first bracket 1 , the second bracket 2 , the third bracket 3 Expand to the corresponding position, reset 48 The reset force pushes the locking part 461 Insert the lock slot 4121 and keyhole 45 Inside, place the housing 41 Locked with three connectors.

The front, back, left and right, and up and down mentioned in the present invention are all defined by the specific orientation where the frame of the stroller is in the unfolded position. Specifically, the front and rear respectively correspond to the accompanying drawings 1 "Left" and "Right" on the medium paper, the upper and lower respectively correspond to the attached drawings 1 "Up" and "Down" in the middle of the paper, and the left and right directions correspond to the direction perpendicular to the paper.

The above-mentioned embodiment is only to illustrate the technical concept and characteristics of the present invention. It is a preferred embodiment, and its purpose is to allow those familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot limit the present invention. scope of protection. All equivalent changes or modifications made according to the spirit of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. a children trolley, including have the vehicle frame (10) of expanded position and folding position, it is arranged at front component (20) and the wheel assembly (30) of described vehicle frame (10) bottom, described vehicle frame (10) includes the first support (1), second support (2), 3rd support (3) and for described vehicle frame (10) is locked in the locking mechanism (4) of expanded position, described first support (1), second support (2), it is separately installed with described front component (20) and wheel assembly (30) on two parts in 3rd support (3), another parts are used as the push rod of this children trolley, it is characterized in that:

nullDescribed locking mechanism (4) includes housing (41)、It is rotationally connected with the locking piece (46) of described second support (2)、It is rotationally connected with the operating parts (47) of described locking piece (46) one end，Described first support (1)、Second support (2)、3rd support (3) phase co-rotation connects or connects in relative rotation two-by-two，Described first support (1)、Second support (2)、At least described first support (1) in 3rd support (3)、All offer porose on 3rd support (3) or be respectively formed on outward extending projection at edge，Hole described in two is connected and overlaps to form limiting section to form lockhole (45) or the projection described in two，Described locking piece (46) other end has the sticking department (461) matching with described lockhole (45) or limiting section，When locking mechanism is in the lock state，The sticking department (461) of locking piece (46) inserts in lockhole (45) or offsets with the sidepiece of limiting section，When locking mechanism is in released state，Sticking department (461) departs from lockhole (45) or limiting section，Make the first support (1)、Second support (2)、3rd support (3) is released，Described operating parts (47) has the first contact site (472) that can contact with described housing (41)，When rotating described operating parts，Described first contact site (472) abuts housing (41) thus drives locking piece (46) to rotate and make described sticking department (461) depart from described lockhole (45) or described limiting section.

2. children trolley according to claim 1, it is characterized in that: when connecting such as the first support (1), the second support (2), the 3rd support (3) phase co-rotation, described lockhole (45) deviates the first support (1), the second support (2), the center of rotation of the 3rd support (3).

3. children trolley according to claim 1, it is characterised in that: described first contact site (472) is in outwardly arc.

4. children trolley according to claim 1, it is characterized in that: described operating parts (47) has second contact site (473) contacting with described second support (2), and described second contact site (473) is in outwardly arc.

5. children trolley according to claim 1, it is characterised in that: described locking mechanism (4) includes the return unit (48) being used for resetting described sticking department (461) being arranged between described locking piece (46) and described housing (41).

null6. children trolley according to claim 1，It is characterized in that: described first support (1) has one first connector (42)，Described second support (2) has one second connector (43)，Described 3rd support (3) has one the 3rd connector (44)，Described housing (41) is hollow，Described first connector (42)、Second connector (43)、3rd connector (44) is positioned at described housing (41)，Hole described in two is opened on the first connector (42) and the 3rd connector (44) respectively，Also a hole is offered on described second connector (43)，First connector (42)、Second connector (43) is connected with the hole on the 3rd connector (44) to form described lockhole (45)，A locked groove (4121) matching with described sticking department (46) is offered on described housing (41)，When described vehicle frame (10) is at expanded position，Described sticking department (461) inserts in described lockhole (45) and locked groove (4121).

7. children trolley according to claim 6, it is characterised in that: described first connector (42), the second connector (43), the 3rd connector (44) are rotationally connected with described housing (41) by second pivot (413).

8. children trolley according to claim 1, it is characterized in that: when described vehicle frame (1) is at expanded position, described first contact site (472) contacts with housing near one end of described locking piece (46), when described vehicle frame is in folding position, described first contact site (472) contacts with housing away from one end of described locking piece (46).

9. the locking mechanism for children trolley, this children trolley includes the vehicle frame (10) with expanded position and folding position, it is arranged at front component (20) and the wheel assembly (30) of described vehicle frame (10) bottom, described vehicle frame (10) includes the first support (1), second support (2), 3rd support (3), described first support (1), second support (2), it is separately installed with described front component (20) and wheel assembly (30) on two parts in 3rd support (3), another parts are used as the push rod of this children trolley, it is characterized in that:

nullDescribed locking mechanism (4) includes housing (41)、It is rotationally connected with the locking piece (46) of described second support (2)、It is rotationally connected with the operating parts (47) of described locking piece (46) one end，Described first support (1)、Second support (2)、3rd support (3) phase co-rotation connects or connects in relative rotation two-by-two，Described first support (1)、Second support (2)、At least described first support (1) in 3rd support (3)、All offer porose on 3rd support (3) or on edge, be formed with outward extending projection，Hole described in two is connected to form lockhole (45) or two described projections overlap formation limiting section，Described locking piece (46) other end has the sticking department (461) matching with described lockhole (45) or limiting section，When locking mechanism is in the lock state，The sticking department (461) of locking piece (46) inserts in lockhole (45) or offsets with the sidepiece of limiting section，When locking mechanism is in released state，Sticking department (461) departs from lockhole (45) or limiting section，Make the first support (1)、Second support (2)、3rd support (3) is released，Described operating parts (47) has the first contact site (472) that can contact with described housing (41)，When rotating described operating parts，Described first contact site (472) abuts housing (41) thus drives locking piece (46) to rotate and make described sticking department (461) depart from described lockhole (45) or limiting section.

10. locking mechanism according to claim 9, it is characterised in that: described first contact site (472) is in outwardly arc.