CN113085441A

CN113085441A - Rear wheel rotation locking control mechanism and infant carrier thereof

Info

Publication number: CN113085441A
Application number: CN201911336477.6A
Authority: CN
Inventors: 郑钦明; 郭征文; 汪尔学; 郑雷雷
Original assignee: Wonderland Switzerland AG
Current assignee: Wonderland Switzerland AG
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2021-07-09
Anticipated expiration: 2039-12-23
Also published as: TW202126523A; TW202317419A; CN113085441B; TWI792100B; TWI831554B

Abstract

The invention discloses a rear wheel rotation locking mechanism and a child carrier having the rear wheel rotation locking mechanism. The rear wheel rotation locking mechanism comprises a fixing seat, an operating part, a driving part and a locking part, and the fixing seat is fixed on the On the frame, the operating member is pivotally connected to the fixed seat, the driving member movably passes through either of the fixed seat and the operating member, and is fixedly connected or abutted with the other of the two, and the locking member is connected to the other. The driving member is arranged in linkage, and is arranged in the direction of preventing the relative rotation of the frame and the rear wheel; the operating member is operated to rotate relative to the fixed seat, so that the driving member is fixedly connected or abutted with the operating member or the fixed member. Under the action, it moves or rotates relative to the other, thereby driving the locking member to move to the unlocking position or the locking position that allows or restricts the rotation of the rear wheel relative to the frame. The mechanism is simple in structure and convenient in operation, and effectively improves the comfort and adaptability of the infant carrier with the rear wheel rotation locking mechanism.

Description

Rear wheel rotation locking control mechanism and infant carrier thereof

Technical Field

The invention relates to the field of infant carriers, in particular to a rear wheel rotating lock control mechanism and an infant carrier with the same.

Background

For parents with children, when carrying children out shopping or walking, the child carrier with wheels is usually used to replace a hand hold, so as to reduce the burden of adults, and the child carrier also has the advantages of comfortable and safe riding, so that the child carrier is more and more favored by people.

The infant carrier such as the existing baby carriage and the existing baby seat generally has a frame and wheels, the front wheels of the infant carrier can roll relative to the frame and can rotate relative to the frame, and most of the rear wheels can only roll relative to the frame but can not rotate relative to the frame, so that when the infant carrier needs to rotate relative to the frame to steer or fold, if the infant carrier is steered from a front-back movement to a left-right parallel movement, the rear wheels can not rotate relative to the frame, the steering can not be directly realized by the conversion between the front-back rolling and the left-right rolling of the wheels, but a larger turning space is needed for steering, or the whole infant carrier is lifted by a user to steer, so that different use requirements can not be well met, and the adaptability is low. In addition, although some infant carriers are available in the market, the rear wheels of the infant carriers can rotate relative to the frame, but the structure of the rotation control mechanism is relatively complex, and the operation is inconvenient, so that the structure of the whole infant carrier is relatively complex, and the use of a user is influenced.

Therefore, there is a need for a rear wheel rotation locking mechanism and an infant carrier having the same, which has a simple structure, is easy to operate, and can control the steering of the rear wheel, so as to overcome the above-mentioned problems.

Disclosure of Invention

An object of the present invention is to provide a rear wheel rotation locking mechanism with simple structure, easy operation and capable of controlling the steering of the rear wheel, so as to ensure the comfort of the infant in the infant carrier.

Another object of the present invention is to provide an infant carrier with a rear wheel rotation locking mechanism, which is simple in structure, easy to operate, and capable of controlling the steering of the rear wheel, so as to ensure the comfort of the infant in the infant carrier.

In order to achieve the above object, the present invention provides a rear wheel rotation lock control mechanism, which is adapted to be assembled between a rotatably connected frame and a rear wheel of an infant carrier, the rear wheel rotation lock control mechanism includes a fixed seat, an operating member, a driving member and a locking member, the fixed seat is fixed on the frame, the operating member is pivoted on the fixed seat, the driving member movably penetrates through any one of the fixed seat and the operating member and is fixedly connected or abutted against the other one of the fixed seat and the operating member, the locking member is linked with the driving member and arranged along a direction preventing the relative rotation of the frame and the rear wheel; the operating member is operated to rotate relative to the fixed seat, so that the driving member moves or rotates relative to the other under the action of the operating member or the fixed seat which is fixedly connected or abutted with the driving member, and the locking member is driven to move to a releasing position or a locking position which allows or limits the rotation of the rear wheel relative to the frame.

Preferably, the driving member is movably or rotatably engaged with one of the fixed base and the operating member, and slidably or rotatably abuts against the pushing surface of the other of the fixed base and the operating member.

Preferably, the pushing surface is an inclined surface or a curved surface.

Preferably, the shape of the inclined surface is at least one of linear, wedge, spiral and wave.

Preferably, when the driving member is at the first position abutting against the relatively high position of the pushing surface, the locking member moves to the unlocking position; when the driving piece is at a second position which is abutted against the relatively lower position of the pushing surface, the locking piece moves to the locking position.

Preferably, the fixing seat is fixedly arranged on a rear fork tube of the frame or a rear foot tube of the frame.

Preferably, the fixing seat, the operation member, the driving member and the locking member are disposed in a one-to-one correspondence.

Preferably, the fixing seat and the operation member are disposed in a one-to-one correspondence, and the driving member and the locking member are disposed in a one-to-one correspondence.

Preferably, two driving members are symmetrically disposed on one of the fixing bases, and the two driving members are abutted against two opposite pushing surfaces of one of the operating members.

Preferably, the fixing base comprises a base and a pivoting base which are connected into a whole, the base is fixedly connected to a rear fork tube of the frame or a rear foot tube of the frame, the operating part is pivoted to the opposite side of the pivoting base, and the driving part is movably clamped to the opposite side of the pivoting base.

Preferably, the pivot seat is provided with a pivot hole for pivoting the operating member and a through hole for passing the driving member.

Preferably, the pivot seat includes a placement groove having a through hole, one end of the driving member is movably clamped in the placement groove, and the other end of the driving member passes through the through hole and abuts against the pushing surface of the operating member.

Preferably, the pivot joint seat is U-shaped, an operating member is pivoted in a groove at the center of the pivot joint seat, two placing grooves are symmetrically arranged at two side walls of the pivot joint seat, and the two driving members are clamped in the corresponding placing grooves and penetrate through the corresponding through holes to be correspondingly abutted against the two pushing surfaces arranged at two opposite sides of the operating member.

Preferably, the fixing seat further comprises an end cover for shielding the placement groove.

Preferably, one end of the operating element is pivoted to the fixing base to form a pivoting portion, and the other end of the operating element can rotate around the pivoting portion to form an operating portion.

Preferably, a pushing surface is disposed on one side of the pivoting portion pivotally connected to the fixing base.

Preferably, the rear wheel rotation locking mechanism further comprises a traction member, and the driving member is connected with the locking member through the traction member.

Preferably, the traction member is a wire rope.

Preferably, the driving member includes an abutting portion and a positioning portion integrally connected, the abutting portion abuts against the operating member, and the positioning portion is movably clamped on the fixing seat.

Preferably, the abutment portion is cylindrical.

Preferably, the operating member or the fixing base is provided with a guide groove for guiding the driving member.

Preferably, the rear wheel rotation locking mechanism of the present invention further includes a connecting assembly, one end of the connecting assembly is connected to the wheel shaft of the rear wheel, the other end of the connecting assembly is rotatably connected to the rear foot tube, and the locking member is inserted into the insertion groove at the tube opening of the rear foot tube in a clearance fit manner, and can move from the tube opening to be inserted into the limiting groove of the connecting assembly or return from the limiting groove to the insertion groove, so as to limit or allow the rear wheel to rotate relative to the rear foot tube.

Preferably, the penetrating grooves and the limiting grooves are arranged in a straight line.

Preferably, the connecting assembly includes a connecting base, a connecting block and a transfer shaft installed at two opposite ends of the connecting base, the connecting block is connected with the wheel shaft, the transfer shaft is rotatably installed in the connecting base and radially arranged along the wheel shaft so as to extend into the rear foot tube, and the limiting groove is radially arranged along the wheel shaft and located beside the transfer shaft.

Preferably, a spring for damping is further connected between the connecting block and the connecting seat along the radial direction of the wheel shaft.

Preferably, the rear wheel rotation locking mechanism further includes a first elastic member, the first elastic member is disposed between the driving member and the fixing seat or between the operating member and the fixing seat, and the driving member is constantly driven to drive the locking member to move toward the locking position.

Preferably, the first elastic member is a compression spring or a torsion spring.

Preferably, the rear wheel rotation locking mechanism of the present invention further includes a second elastic member, and the second elastic member is disposed between the locking member and the rear leg tube. The locking member is constantly urged towards the locking position.

Preferably, the second elastic member is a compression spring.

The invention also provides an infant carrier, which comprises a frame, a rear wheel rotatably connected with the frame, and a rear wheel rotating locking control mechanism connected between the frame and the rear wheel, wherein the rear wheel rotating locking control mechanism is as described above.

Compared with the prior art, the rear wheel rotation locking mechanism comprises a fixed seat fixedly arranged on a frame, an operating part pivoted on the fixed seat, a driving part and a locking part which are arranged in a linkage manner, wherein the driving part is movably arranged on any one of the fixed seat and the operating part in a penetrating manner and is fixedly connected or abutted with the other one, and the locking part is combined to be arranged along the direction preventing the relative rotation of the frame and the rear wheel, so that the driving part can be driven to move or rotate relative to the other one under the action of the operating part or the fixed seat fixedly connected or abutted with the driving part by abutting against the operating part, and the locking part is driven to move to a locking release position to release the limitation on the rotation of the rear wheel relative to the frame, and the rear wheel can rotate to a required use angle or a folding angle relative to the frame so as to be used. The rear wheel rotation locking and controlling mechanism is simple in structure and convenient to operate, so that the rear wheel can be freely switched between required angles, and the comfort and the adaptability of the infant carrier with the rear wheel rotation locking and controlling mechanism in use are effectively guaranteed.

Drawings

Fig. 1 is a schematic view of a rear wheel rotation lock mechanism of the present invention mounted on a rear fork of a child carrier.

Fig. 2 is an exploded view of the rear wheel rotation lock control mechanism of the present invention.

FIG. 3 is a schematic view of one construction of the operating member of the present invention.

FIG. 4 is a schematic view of the locking state of the driving member and the operating member of the present invention.

FIG. 5 is a schematic view of the driving member and the operating member of the present invention in a locked state.

Fig. 6 is a schematic view of the locking element of the present invention in a locked condition under the influence of a pulling element.

Fig. 7 is a schematic view of the locking element of the present invention in a unlocked state under the action of the pulling element.

Fig. 8 is a schematic view of the rear wheel rotation lock control mechanism of the present invention mounted on the rear foot tube of the infant carrier.

FIG. 9 is a schematic view of another construction of the operating member of the present invention.

FIG. 10 is a schematic view of yet another construction of the operating member of the present invention.

Detailed Description

In order to explain technical contents, structural features, and objects and effects of the present invention in detail, the following detailed description is given with reference to the accompanying drawings in conjunction with the embodiments.

Referring to fig. 1 and 8, the present invention discloses a rear wheel rotation lock control mechanism 100 and a child carrier 200 having the rear wheel rotation lock control mechanism 100, wherein the child carrier 200 includes but is not limited to a stroller, a crib, and a baby seat. Specifically, the child carrier 200 disclosed in the preferred embodiment of the present invention is a stroller, which includes a frame 201, two rear wheels 202 rotatably connected to two rear leg pipes 2011 of the frame 201, two front wheels 203 rotatably connected to two front leg pipes 2012 of the frame 201, and a rear wheel rotation locking mechanism 100 connected between the frame 201 and the rear wheels 202. Wherein, a front fork 2014 is connected between two front foot tubes 2012, and a rear fork 2015 is connected between two rear foot tubes 2011. As shown in fig. 1, the rear wheel rotation locking mechanism 100 of the present invention may be disposed between the rear fork 2015 and the rear wheel 202, as shown in fig. 8, the rear wheel rotation locking mechanism 100 may also be disposed between the rear foot tube 2011 and the rear wheel 202, so as to limit or allow the rotation of the rear wheel 202 relative to the rear foot tube 2011 by the rear wheel rotation locking mechanism 100, so as to change the relative position therebetween, for example, to turn the rear wheel 202 rolling in the front-rear direction to roll in the left-right direction, thereby meeting different requirements. Of course, the frame 201 of the present invention further includes a hand push rod 2016 pivotally connected to the rear leg pipe 2011, and a seat pipe 2017 pivotally connected between the rear leg pipe 2011 and the front leg pipe 2012, and the specific structure and connection relationship thereof are not important for protection of the present application and are not described herein again.

Referring to fig. 1 to 7, the rear wheel rotation lock control mechanism 100 of the present invention installed between the rear fork 2015 and the rear wheel 202 will be described in detail:

referring to fig. 1 and 2, the rear wheel rotation locking mechanism 100 specifically includes a fixing base 10, an operating member 20, a driving member 30, and a locking member 40. The fixing base 10 is fixedly arranged on a rear fork 2015 of the frame 201, the operating element 20 is pivoted on the fixing base 10, the driving element 30 is movably clamped on any one of the fixing base 10 and the operating element 20 and is slidably abutted against an ejection surface A of the other one of the fixing base 10 and the operating element 20, the locking element 40 and the driving element 30 are arranged in a linkage manner and are arranged along a direction of preventing the rear wheel 202 from rotating relative to the rear foot tube 2011, and are specifically positioned at a pivoting end B of the rear foot tube 2011 and the rear wheel 202. The operating member 20 is operated to rotate relative to the fixed seat 10, so that the driving member 30 moves relative to the fixed seat 10 or the operating member 20 under the action of the pushing surface a abutting against the driving member, and the locking member 40 is driven to move in a direction away from or close to the pivot end B of the rear foot pipe 2011 and the rear wheel 202 until the locking member moves to a releasing position or a locking position which allows or limits the rotation of the rear wheel 202 relative to the frame 201. Of course, the driving member 30 can be disposed in other structures movably penetrating through either one of the fixing base 10 and the operating member 20.

Specifically, the rear wheel rotation locking mechanism 100 of the present invention further includes a traction member 50, and the driving member 30 and the locking member 40 can be connected through the traction member 50, so as to realize the linkage arrangement of the two. The traction element 50 is embodied as a wire rope. As shown by the dotted lines in fig. 1, the pulling member 50 can be inserted into the rear leg tube 2011 and the rear fork tube 2015, and can move along the corresponding tube walls, so that the movement of the pulling member 50 is guided and limited, and the movement is smoother.

Specifically, the rear wheel rotation locking mechanism 100 of the present invention further includes a first elastic member 60, the first elastic member 60 is disposed between the driving member 30 and the fixing seat 10 or between the operating member 20 and the fixing seat 10, and the driving member 60 is constantly driven to drive the locking member 40 to move in a direction of preventing the rear wheel 202 from rotating relative to the frame 201, that is, the locking member 40 is constantly driven to return to a locking position of preventing the rear wheel 202 from rotating relative to the frame 201. The first elastic member 60 is a compression spring or a torsion spring. As shown in fig. 6, the rear wheel rotation locking mechanism 100 of the present invention further includes a second elastic member 70, the second elastic member 70 is disposed between the locking member 40 and the rear foot tube 2011, and the second elastic member 70 constantly drives the locking member 40 to move towards the direction preventing the rear wheel 202 from rotating relative to the frame 201, i.e. constantly drives the locking member 40 to return to the locking position preventing the rear wheel 202 from rotating relative to the frame 201. The second elastic member 70 is a compression spring.

Referring to fig. 2, in the present embodiment, the fixing base 10 includes a base 11 and a pivoting base 12 integrally connected, the base 11 is fixedly connected to a rear fork 2015 of the frame 201, the operating element 20 is pivoted to an opposite side of the pivoting base 12, and the driving element 30 is movably connected to an opposite side of the pivoting base 12. The pivot base 12 is provided with a pivot hole 121 for the operation element 20 to pivot and a through hole 122 for the driving element 30 to pass through. The operation member 20 is provided with a sleeve hole 21 corresponding to the pivot hole 121, and the operation member 20 is pivoted to the pivot base 12 by a pivot shaft (not shown) penetrating through the pivot hole 121 and the sleeve hole 21.

Specifically, the pivot base 12 includes a mounting groove 12a having a through hole 122, one end of the driving member 30 is movably clamped in the mounting groove 12a, and the other end of the driving member 30 passes through the through hole 122 and abuts against the pushing surface a of the operating member 20. More specifically, the driving member 30 includes an abutting portion 31 and a positioning portion 32 connected integrally, the abutting portion 31 abuts against the pushing surface a of the operating member 20, and the positioning portion 32 is movably clamped on the pivot seat 12 of the fixing seat 10. The abutting portion 31 is specifically cylindrical, a locking platform 321 connected to the pulling member 50 is provided on the positioning portion 32, and one end of the pulling member 50 is wound around the locking platform 321. Preferably, the fixing base 11 further includes an end cover 13, the end cover 13 is used for shielding the placing groove 12a, the driving member 30 can move in the placing groove 12a defined by the pivoting base 12 and the end cover 13, and the first elastic member 60 can also be disposed between the end cover 13 and the positioning portion 32, and can also function to drive the locking member 40 to automatically return to the locking position. Further, the end cap 13 or the pivot base 12 may further have a locking portion (not shown) for positioning the driving member 30 at a desired driving position. In addition, the end cap 13 is further provided with a through hole for the pulling member 50 to pass through.

Referring to fig. 3 to 5, an opposite end of the operating element 20 close to the pivot base 12 is pivoted to the pivot base 12 to form a pivot portion 22, and the other end of the operating element 20 away from the pivot base 12 can rotate around the pivot portion 22 to form an operating portion 23. The pushing surface a is located on the side of the pivot portion 22 pivotally connected to the pivot base 12 of the fixing base 10. The pushing surface A is an inclined surface or a curved surface, and the shape of the inclined surface can be at least one of linear shape, wedge shape, spiral shape and wave shape. When the operating element 20 is pushed downward or the operating element 20 is pushed upward, the driving element 30 slides on the inclined or curved surface under the action of the pushing surface a, and the locking element 40 can be pulled or pushed away from or close to the pivoting end B to be unlocked or locked, so as to allow or limit the rotation of the rear wheel 202 around the rear foot tube 2011. Specifically, when the driving member 30 slides to the first position abutting against the relatively high position of the pushing surface a, the locking member 40 moves upward to disengage from the pivot end B, and moves to the unlocking position where the restriction on the rotation of the rear wheel 202 relative to the frame 201 is released, and at this time, the first elastic member 60 and the second elastic member 70 are compressed; when the operating member 20 is released, the operating member 20 is pushed upward by the elastic force of the first elastic member 60 and the second elastic member 70, so that the driving member 30 is at the second position abutting against the relatively lower position of the pushing surface a, the locking member 40 moves downward to be engaged with the pivot end B and is located at the locking position for limiting the rotation of the rear wheel 202 relative to the frame 201.

Referring to fig. 6 and 7, the rear wheel rotation lock control mechanism 100 of the present invention further includes a connection assembly 80, one end of the connection assembly 80 is connected to the axle 2021 of the rear wheel 202, the other end of the connection assembly 80 is rotatably connected to the rear foot tube 2011, the locking member 40 is inserted into the insertion groove 2017 at the opening of the rear foot tube 2011 in a clearance fit manner, and can be moved from the opening to be inserted into the limiting groove 811 of the connection assembly 80 or retracted from the limiting groove 811 to the insertion groove 2017, so as to limit or allow the rotation of the rear wheel 202 relative to the rear foot tube 2011.

Specifically, the connection assembly 80 includes a connection base 81, connection blocks 82 installed at opposite ends of the connection base 81, and an adapter shaft 83. The connecting block 82 is connected to the axle 2021 of the rear wheel 202, and a spring 84 for damping is connected between the connecting block 82 and the connecting base 81 in the radial direction of the axle 2021. The transfer shaft 83 is rotatably installed in the connecting seat 81, and is arranged along the radial direction of the wheel shaft 2021 and can extend into the rear foot tube 2011 from the nozzle of the rear foot tube 2011, that is, the rear foot tube 2011 is sleeved on the upper side end of the transfer shaft 80. The stopper groove 811 is disposed along the radial direction of the hub 2021 and is located beside the spindle 83. Preferably, the through groove 2017 and the limiting groove 811 are linearly arranged beside the adapting shaft 80, so that the locking member 40 can be vertically inserted into the through groove 2017 and the limiting groove 811, thereby better limiting the rotation of the rear wheel 202 around the adapting shaft 80 relative to the rear foot pipe 2011. Rotation of the rear wheel 202, typically 90, changes the direction from fore-and-aft movement to side-to-side movement.

Returning to fig. 1 and 2, in the preferred embodiment of the present application, the fixing base 10 and the operating member 20 are disposed in a one-to-one correspondence, and the driving member 30, the locking member 40 and the pulling member 50 are disposed in a one-to-one correspondence. When the number of the fixing bases 10 is one, two driving members 30 are symmetrically disposed on one fixing base 10, the two driving members 30 are respectively abutted against two pushing surfaces a of the opposite sides of one operating member 20, and a traction member 50 is connected between each driving member 30 and the locking member 40. The operation of releasing the lock can be conveniently realized by pressing the operation part 20 with a single hand or a single foot, and the lock can be automatically reset to the locking state when the pressing is released, so that the structure is simple, and the operation is convenient and fast.

Specifically, the fixing base 10 is disposed at the center of the rear fork 2015, the pivot base 12 is U-shaped, the operating element 20 is pivoted in the groove 12b at the center of the pivot base 12, two disposing slots 12a are symmetrically disposed at two side walls of the pivot base 12, the two driving elements 30 are clamped in the corresponding disposing slots 12a and penetrate through the corresponding through holes 122, and then are correspondingly abutted against the two pushing surfaces a disposed at two opposite sides of the operating element 20, and the two pulling elements 50 are inserted in the two rear legs 2012.

Of course, in other embodiments, in order to achieve stability and smoothness of adjustment, the fixing base 10, the operating element 20, the driving element 30, the locking element 40 and the pulling element 50 are disposed in a one-to-one correspondence. The number of the fixing seats 10 can be two, the two fixing seats 10 are symmetrically arranged on the back fork 2015, one operating part 20 and one driving part 30 are correspondingly connected to two opposite sides of one fixing seat 10 one by one, and the two operating parts 20 symmetrically arranged are operated, so that the stress is more uniform during adjustment, and the lock is more stable and smooth during unlocking.

Referring to fig. 8 to 9, when the rear wheel rotation lock control mechanism 100 is installed between the rear foot tube 2011 and the rear wheel 202, the difference between the rear wheel rotation lock control mechanism 100 installed between the rear fork tube 2015 and the rear wheel 202 is that:

the fixing base 10 is fixed to the rear foot tube 2011 of the frame through the base 11. The structures and the matching relations of the fixed seat 10, the operation member 20, the driving member 30, the locking member 40 and the traction member 50 are the same as those described above, and the structures and the matching relations can be set as follows: the driving member 30 is rotatably engaged with one of the fixing base 10 and the operating member 20, and rotatably abuts against the pushing surface A of the other one of the fixing base and the operating member. Wherein, the pushing surface A is spiral. In particular, the fixed seat 10 or the operating element 20 may be provided with a threaded hole 24 corresponding to an external thread on the abutment portion 31 of the driving element 30. Then, as the operating element 20 rotates relative to the fixing base 10, the abutting portion 31 of the driving element 30 enters and exits the threaded hole 24 under the action of the pushing surface a formed by the helical internal thread in the threaded hole 24, so as to rotate in a telescopic manner relative to the fixing base 10, and further pull the locking element 40 to release or lock.

Specifically, when the fixing seats 10, the operating parts 20, the driving parts 30, the locking parts 40 and the pulling parts 50 are two in one-to-one correspondence, the two fixing seats 10 can be disposed on the two rear foot tubes 2011, the number of the threaded holes 24 on each operating part 20 is one, and the two pulling parts 50 are inserted into the rear foot tubes 2011 on both sides and connected with the corresponding driving parts 30.

When the fixing base 10 and the operating element 20 are correspondingly set to be one, the driving element 30, the locking element 40 and the traction element 50 are correspondingly set to be two, the fixing base 10 can be fixedly connected to the rear foot tube 2011 on one side, the operating element 20 is provided with two threaded holes 24 which are arranged at intervals, the two driving elements 30 are connected to the fixing base 10 and are abutted to the ejection surfaces a formed by the inner walls of the two threaded holes 24 in a one-to-one correspondence manner, one traction element 50 penetrates through the rear foot tube 2011 provided with the fixing base 10 and is connected with one driving element 30, and the other traction element 50 penetrates through the rear fork tube 2015 through the other rear foot tube 2011 and then penetrates into the rear foot tube 2011 provided with the fixing base 10 and is connected with the other driving element 30. The two pulling members 50 can be inserted through the heel tube 2011, the heel tube 2011 and the rear fork 2015 as shown in phantom in fig. 8.

Referring finally to fig. 10, the structure can also be simplified as: the driving member 30 is a steel wire rope, one end of which is fixedly connected to the operating member 20, and the other end of which is connected to the locking member 40 after being wound through the arc-shaped wire guide 25 of the operating member 20, so as to push the operating member 20 to rotate around the fixed seat 10, and then the driving member 30 can be driven to wind around the arc-shaped wire guide 25 in the operating member 20 to drive the locking member 10 to move to the unlocking position; or along the wire guide 25 to move the locking member 10 to the locking position.

Compared with the prior art, the rear wheel rotation locking mechanism 100 of the present invention comprises a fixed seat 10 fixed on the frame 201, an operating element 20 pivoted on the fixed seat 10, and a driving element 30 and a locking element 40 arranged in a linking manner, wherein the driving element 30 is movably disposed on any one of the fixed seat 10 and the operating element 20 and is abutted or fixedly connected with the other, and the locking element 40 is arranged along a direction preventing the relative rotation between the frame 201 and the rear wheel 202, so that the driving element 30 can be driven to move or rotate relative to the other under the action of the operating element 20 or the fixed seat 10 fixedly connected or abutted with the driving element 20 by pressing the operating element 20 to rotate relative to the fixed seat 10, and the locking element 40 is driven to move to a locking release position to release the limitation on the relative rotation between the rear wheel 202 and the frame 201, and the rear wheel 202 can rotate to a required use angle or a folding angle relative to the frame 201, for use or storage. The rear wheel rotation locking control mechanism 100 of the present invention has a simple structure and is convenient to operate, so that the rear wheel 202 can be freely switched between the required angles, thereby effectively ensuring the comfort and adaptability of the infant carrier 200 with the rear wheel rotation locking control mechanism 100.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims

1. A rear wheel rotation lock control mechanism is suitable for being assembled between a frame and a rear wheel of an infant carrier, wherein the frame and the rear wheel are rotatably connected, and the rear wheel rotation lock control mechanism is characterized by comprising a fixed seat, an operating part, a driving part and a locking part, wherein the fixed seat is fixedly arranged on the frame, the operating part is pivoted on the fixed seat, the driving part is movably arranged on one of the fixed seat and the operating part in a penetrating manner and is fixedly connected with or abutted against the other of the fixed seat and the operating part, and the locking part is arranged in a linkage manner with the driving part and is arranged along a direction of preventing the rear wheel and the frame from rotating; the operating piece is operated to rotate relative to the fixed seat, so that the driving piece moves or rotates relative to the other under the action of the operating piece or the fixed seat which is fixedly connected or abutted with the driving piece, and the locking piece is driven to move to a releasing position or a locking position which allows or limits the rear wheel to rotate relative to the frame.

2. The rear wheel rotation lock control mechanism as claimed in claim 1, wherein the driving member is movably or rotatably engaged with one of the fixed base and the operating member and slidably or rotatably engaged with an urging surface of the other of the fixed base and the operating member.

3. The rear wheel rotation lock control mechanism of claim 2, wherein the pushing surface is a sloped surface or a curved surface.

4. The rear wheel rotation lock control mechanism of claim 3, wherein the ramp is at least one of linear, wedge, helical and wave shaped.

5. The rear wheel rotation lock control mechanism as claimed in claim 3, wherein the locking member is moved to the unlocked position when the driving member is in the first position abutting the relatively high position of the push surface; when the driving piece is located at a second position abutted against the relatively lower position of the pushing surface, the locking piece moves to the locking position.

6. The rear wheel rotation locking mechanism of claim 2, wherein the fixing seat is fixedly arranged on a rear fork tube of the frame or a rear foot tube of the frame.

7. The rear wheel rotation lock control mechanism of claim 6, wherein the fixing seat, the operating member, the driving member, and the locking member are disposed in one-to-one correspondence.

8. The rear wheel rotation lock control mechanism of claim 6, wherein the fixing seats are disposed in one-to-one correspondence with the operating members, and the driving members are disposed in one-to-one correspondence with the locking members.

9. The rear wheel rotation lock control mechanism of claim 8, wherein two driving members are symmetrically disposed on one of the fixing seats, and the two driving members are in corresponding abutment with two pushing surfaces on opposite sides of one of the operating members.

10. The rear wheel rotation lock control mechanism of claim 6, wherein the fixing base includes a base and a pivot base connected as a whole, the base is fixed to a rear fork tube of the frame or a rear foot tube of the frame, the operating member is pivoted to an opposite side of the pivot base, and the driving member is movably engaged to an opposite side of the pivot base.

11. The rear wheel rotation lock control mechanism of claim 10, wherein the pivot seat is provided with a pivot hole for pivoting the operating member and a through hole for passing the driving member.

12. The rear wheel rotation lock control mechanism of claim 11, wherein the pivot seat includes a mounting slot having a through hole, one end of the driving member is movably engaged with the mounting slot, and the other end of the driving member passes through the through hole and abuts against the pushing surface of the operating member.

13. The rear wheel rotation lock control mechanism of claim 12, wherein the pivot joint seat is U-shaped, one of the operation members is pivotally connected to a recess at a center of the pivot joint seat, two of the installation slots are symmetrically disposed at two side walls of the pivot joint seat, and the two driving members are engaged with the corresponding installation slots and pass through the corresponding through holes, and then are correspondingly engaged with two pushing surfaces disposed at two opposite sides of the operation member.

14. The rear wheel spin lock control mechanism of claim 12, further comprising an end cap for covering the seating groove.

15. The rear wheel rotation locking mechanism of claim 1, wherein one end of the operating member is pivotally connected to the fixing base to form a pivot portion, and the other end of the operating member is rotatable around the pivot portion to form an operating portion.

16. The rear wheel rotation lock control mechanism of claim 15, wherein the pushing surface is provided on a side of the pivot portion pivotally connected to the fixing base.

17. The rear wheel rotation lock control mechanism of claim 1, further comprising a traction member, wherein the driving member is connected to the locking member by a traction member.

18. The rear wheel rotation lock control mechanism of claim 17, wherein the traction member is a wire rope.

19. The rear wheel rotation locking mechanism as claimed in claim 2, wherein the driving member includes an abutting portion and a positioning portion integrally connected, the abutting portion abuts against the operating member, and the positioning portion is movably engaged with the fixing seat.

20. The rear wheel rotation locking mechanism of claim 19, wherein the abutment is cylindrical.

21. The rear wheel rotation lock control mechanism as claimed in claim 1, wherein the operating member or the fixing seat is provided with a guide groove for guiding the driving member.

22. The rear wheel rotation lock control mechanism of claim 1, further comprising a connecting assembly, wherein one end of the connecting assembly is connected to the axle of the rear wheel, the other end of the connecting assembly is rotatably connected to the rear foot tube, the locking member is inserted into the insertion groove at the pipe orifice of the rear foot tube in a clearance fit manner, and can move from the pipe orifice to be inserted into the limiting groove of the connecting assembly or move back from the limiting groove to the insertion groove to limit or allow the rear wheel to rotate relative to the rear foot tube.

23. The rear wheel rotation lock control mechanism of claim 22, wherein the penetration groove and the limit groove are arranged in a straight line.

24. The rear wheel rotation lock mechanism of claim 22, wherein the connecting member includes a connecting block, a connecting block and an adapter shaft installed at opposite ends of the connecting block, the connecting block is connected to the axle, the adapter shaft is rotatably installed in the connecting block and is arranged in a radial direction of the axle to be inserted into the rear foot tube, and the limiting groove is arranged in a radial direction of the axle and is located beside the adapter shaft.

25. The rear wheel rotation locking mechanism of claim 24, wherein a spring for damping is further connected between the connecting block and the connecting seat in a radial direction of the wheel shaft.

26. The rear wheel rotation lock control mechanism of claim 1, further comprising a first elastic member disposed between the driving member and the fixing seat or between the operating member and the fixing seat, wherein the first elastic member constantly drives the driving member to drive the locking member to move toward the locking position.

27. The rear wheel rotation lock control mechanism of claim 26, wherein the first resilient member is a compression spring or a torsion spring.

28. The rear wheel rotation lock control mechanism of claim 1, further comprising a second elastic member disposed between the locking member and the rear leg tube, the second elastic member constantly urging the locking member toward the locking position.

29. The rear wheel rotation lock control mechanism of claim 28, wherein the second resilient member is a compression spring

30. A child carrier comprising a frame, a rear wheel rotatably connected to the frame, and a rear wheel rotation lock control mechanism connected between the frame and the rear wheel, wherein the rear wheel rotation lock control mechanism is as claimed in any one of claims 1 to 29.