Rear wheel steering lock control mechanism and child carrier thereof

Abstract

The present 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 fixed seat, an operating member, a driving member and a locking member. The fixed seat is fixed on a frame, the operating member is pivotally connected to the fixed seat, the driving member is movably inserted into one of the fixed seat and the operating member, and is fixedly connected or abutted with the other of the two. The locking member and the driving member are arranged in a linked manner and arranged in a direction to prevent the frame and the rear wheel from rotating relative to each other. 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 member fixedly connected or abutted therewith, thereby driving the locking member to move to a release position or a locking position that allows or limits the rear wheel to rotate relative to the frame. The mechanism has a simple structure and is easy to operate, and effectively improves the comfort and adaptability of the child carrier having the rear wheel rotation locking mechanism.

Description

Technical Field

[0001] The present invention relates to the field of infant carriers, and in particular to a rear wheel steering locking mechanism and an infant carrier having the rear wheel steering locking mechanism. Background Art

[0002] Parents with children usually use a child carrier with wheels instead of carrying the child by hand when taking the child out for shopping or walking, so as to reduce the burden on the adults. In addition, the child carrier has the advantages of being comfortable and safe to ride, thus making the child carrier more and more popular among people.

[0003] Existing infant carriages such as baby carriages and infant seats generally have a frame and wheels, and the front wheels can generally roll and rotate relative to the frame, while the rear wheels can only roll but not rotate relative to the frame. Therefore, when the wheels need to rotate relative to the frame to turn or fold the infant carriage, such as when turning from forward and backward movement to left and right parallel movement, since the rear wheels cannot rotate relative to the frame, it is impossible to directly switch between forward and backward rolling and left and right rolling to achieve turning. Instead, a larger turning space is required for turning, or the user lifts the entire infant carriage to turn. Therefore, it cannot meet different usage requirements well and has low adaptability. In addition, although some infant carriages on the market have rear wheels that can rotate relative to the frame, the structure of their rotation control mechanism is relatively complex and inconvenient to operate, which makes the structure of the entire infant carriage relatively complex, affecting the user's use.

[0004] Therefore, there is an urgent need for a rear wheel rotation locking mechanism that is simple in structure, easy to operate and capable of controlling the steering of the rear wheels, and a child carrier having the rear wheel rotation locking mechanism to overcome the above-mentioned problems. Summary of the invention

[0005] An object of the present invention is to provide a rear wheel rotation locking control mechanism which has a simple structure, is easy to operate and can control the steering of the rear wheels, so as to ensure the comfort of infants and young children riding in the infant carrier.

[0006] Another object of the present invention is to provide a child carrier, which is provided with a rear wheel rotation locking mechanism that has a simple structure, is easy to operate, and can control the steering of the rear wheels, so as to ensure the comfort of infants and young children riding in the child carrier.

[0007] To achieve the above-mentioned purpose, the present invention provides a rear wheel rotation locking mechanism, which is suitable for being assembled between a rotatably connected frame and a rear wheel of a child carrier, and the rear wheel rotation locking mechanism comprises a fixed seat, an operating member, a driving member and a locking member, the fixed seat is fixedly arranged on the frame, the operating member is pivotally connected to the fixed seat, the driving member is movably inserted into either the fixed seat or the operating member, and is fixedly connected or abutted with the other of the two, the locking member and the driving member are arranged in a linked manner, and are arranged in a direction to prevent the frame and the rear wheel from rotating relative to each other; the operating member is operated to rotate it 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 fixedly connected or abutted therewith, thereby driving the locking member to move to a release position or a locking position that allows or restricts the rear wheel from rotating relative to the frame.

[0008] Preferably, the driving member is movably or rotatably clamped on any one of the fixing seat and the operating member, and is slidably or rotatably abutted against the pushing surface of the other one of the two.

[0009] Preferably, the pushing surface is an inclined surface or a curved surface.

[0010] Preferably, the shape of the inclined surface is at least one of a straight line, a wedge, a spiral and a wave.

[0011] Preferably, when the driving member is in a first position abutting against a relatively high position of the push surface, the locking member moves to the unlocking position; when the driving member is in a second position abutting against a relatively low position of the push surface, the locking member moves to the locking position.

[0012] Preferably, the fixing seat is fixed on the rear fork tube of the frame or on the rear leg tube of the frame.

[0013] Preferably, the fixing seat, the operating member, the driving member and the locking member are arranged in a one-to-one correspondence.

[0014] Preferably, the fixing seat and the operating member are arranged in a one-to-one correspondence, and the driving member and the locking member are arranged in a one-to-one correspondence.

[0015] Preferably, two driving members are symmetrically arranged on one of the fixing seats, and the two driving members are in corresponding abutment with two pushing surfaces on opposite sides of an operating member.

[0016] Preferably, the fixed seat includes a base and a pivot seat connected as an integral whole, the base is fixedly connected to the rear fork tube of the frame or the rear leg tube of the frame, the operating member is pivotally connected to the opposite side of the pivot seat, and the driving member is movably clamped to the other opposite side of the pivot seat.

[0017] Preferably, the pivot seat is provided with a pivot hole for the operating member to pivot and a through hole for the driving member to penetrate.

[0018] Preferably, the pivot seat includes a placement groove having a through hole, one end of the driving member is movably engaged in the placement groove, and the other end of the driving member passes through the through hole to abut against the pushing surface of the operating member.

[0019] Preferably, the pivot seat is U-shaped, an operating member is pivotally connected to a groove at the center of the pivot seat, and two mounting grooves are symmetrically provided on both side walls of the pivot seat. After the two driving members are snapped into the corresponding mounting grooves and pass through the corresponding through holes, they abut against two push surfaces provided on two opposite sides of the operating member.

[0020] Preferably, the fixing seat further comprises an end cover, and the end cover is used to cover the placement groove.

[0021] Preferably, one end of the operating member is pivotally connected to the fixing seat to form a pivot portion, and the other end of the operating member can rotate around the pivot portion to form an operating portion.

[0022] Preferably, a pushing surface is provided on one side of the pivotal portion pivotally connected to the fixing seat.

[0023] Preferably, the rear wheel rotation locking mechanism of the present invention further includes a traction member, and the driving member and the locking member are connected via the traction member.

[0024] Preferably, the traction member is a steel wire rope.

[0025] Preferably, the driving member comprises an abutting portion and a positioning portion which are connected as one body, the abutting portion abuts against the operating member, and the positioning portion is movably clamped on the fixing seat.

[0026] Preferably, the abutting portion is cylindrical.

[0027] Preferably, the operating member or the fixing seat is provided with a guide groove for guiding the driving member.

[0028] Preferably, the rear wheel rotation locking mechanism of the present invention also includes a connecting component, one end of the connecting component is connected to the axle of the rear wheel, and the other end of the connecting component is rotatably connected to the rear leg tube. The locking piece is inserted into the insertion groove at the pipe mouth of the rear leg tube with a clearance fit, and can be moved from the pipe mouth to the limiting groove inserted in the connecting component or retreated from the limiting groove to the insertion groove to limit or allow the rear wheel to rotate relative to the rear leg tube.

[0029] Preferably, the penetration groove and the limiting groove are arranged in a straight line.

[0030] Preferably, the connecting assembly includes a connecting seat, connecting blocks and an adapter shaft installed at two opposite ends of the connecting seat, the connecting block is connected to the wheel axle, the adapter shaft is rotatably installed in the connecting seat, and is arranged along the radial direction of the wheel axle and can extend into the rear leg tube, and the limiting groove is arranged along the radial direction of the wheel axle and is located next to the adapter shaft.

[0031] Preferably, a spring for shock absorption is connected between the connecting block and the connecting seat along the radial direction of the wheel axle.

[0032] Preferably, the rear wheel rotation locking mechanism of the present invention further comprises a first elastic member, which is arranged between the driving member and the fixing seat or between the operating member and the fixing seat, and constantly drives the driving member to drive the locking member to move toward the locking position.

[0033] Preferably, the first elastic member is a compression spring or a torsion spring.

[0034] Preferably, the rear wheel rotation locking mechanism of the present invention further comprises a second elastic member, which is arranged between the locking member and the rear leg tube, and the locking member is constantly driven to move toward the locking position.

[0035] Preferably, the second elastic member is a compression spring.

[0036] The present invention also provides a child carrier, which includes a frame, a rear wheel rotatably connected to the frame, and a rear wheel rotation locking mechanism connected between the frame and the rear wheel. The rear wheel rotation locking mechanism is as described above.

[0037] Compared with the prior art, the rear wheel rotation locking mechanism of the present invention includes a fixed seat fixed on the frame, an operating member pivotally connected to the fixed seat, and a driving member and a locking member arranged in a linked manner. The driving member is movably inserted into one of the fixed seat and the operating member, and is fixedly connected or abutted with the other. The locking member is arranged in a direction to prevent the relative rotation of the frame and the rear wheel, so that the operating member is pushed to rotate relative to the fixed seat, and the driving member can be driven to move or rotate relative to the other under the action of the operating member or the fixed seat fixedly connected or abutted therewith, thereby driving the locking member to move to the unlocking position to release the restriction on the rotation of the rear wheel relative to the frame, and the rear wheel can be rotated relative to the frame to the required use angle or folding angle for use or storage. The rear wheel rotation locking mechanism of the present invention has a simple structure and is easy to operate, so that the rear wheel can be freely converted between the required angles, thereby effectively ensuring the comfort and adaptability of the use of the child carrier with the rear wheel rotation locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the rear wheel rotation locking mechanism of the present invention being assembled on the rear fork tube of the child carrier.

[0039] Figure 2 It is an exploded view of the rear wheel rotation locking mechanism of the present invention.

[0040] Figure 3 It is a schematic diagram of a structure of an operating part of the present invention.

[0041] Figure 4 It is a schematic diagram of the driving member and the operating member of the present invention being matched and in a locked state.

[0042] Figure 5 It is a schematic diagram of the driving member and the operating member of the present invention cooperating in a released state.

[0043] Figure 6 It is a schematic diagram showing that the locking member of the present invention is in a locked state under the action of the traction member.

[0044] Figure 7 It is a schematic diagram showing that the locking member of the present invention is in a released state under the action of the pulling member.

[0045] Figure 8 It is a schematic diagram of the rear wheel rotation locking mechanism of the present invention being assembled on the rear leg tube of the child carrier.

[0046] Fig. 9 It is a schematic diagram of another structure of the operating member of the present invention.

[0047] Fig.10 It is a schematic diagram of another structure of the operating member of the present invention. DETAILED DESCRIPTION

[0048] In order to explain the technical content, structural features, achieved objectives and effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0049] Please refer to Figure 1 and Figure 8 The present invention discloses a rear wheel rotation locking mechanism 100 and a child carrier 200 having the rear wheel rotation locking mechanism 100, and the child carrier 200 includes but is not limited to, for example, a baby carriage, a crib, and a baby seat. Specifically, the child carrier 200 disclosed in the preferred embodiment of the present invention is a baby carriage, which includes a frame 201, two rear wheels 202 rotatably connected to two rear leg tubes 2011 of the frame 201, two front wheels 203 rotatably connected to two front leg tubes 2012 of the frame 201, and a rear wheel rotation locking mechanism 100 connected between the frame 201 and the rear wheels 202. Among them, a front fork tube 2014 is connected between the two front leg tubes 2012, and a rear fork tube 2015 is connected between the two rear leg tubes 2011. As Figure 1 As shown, the rear wheel rotation locking control mechanism 100 of the present invention can be installed between the rear fork tube 2015 and the rear wheel 202. Figure 8As shown, the rear wheel rotation locking mechanism 100 can also be installed between the rear foot tube 2011 and the rear wheel 202, so that the rear wheel 202 can be restricted or allowed to rotate relative to the rear foot tube 2011 by the rear wheel rotation locking mechanism 100 to change the relative position between the two, such as turning the rear wheel 202 that rolls in the front-to-back direction to roll in the left-to-right direction, so as to meet different usage requirements. Of course, the frame 201 of the present invention also includes a push rod 216 pivotally connected to the rear foot tube 2011, a seat tube 217 pivotally connected between the rear foot tube 2011 and the front foot tube 2012, and other components, and their specific structures and connection relationships are not the focus of protection of this application, and are not described in detail here.

[0050] Please refer to the following Figures 1 to 7 , the rear wheel rotation locking mechanism 100 of the present invention is arranged between the rear fork tube 2015 and the rear wheel 202 in detail:

[0051] Reference first Figure 1 and Figure 2 The rear wheel rotation locking mechanism 100 specifically includes a fixed seat 10, an operating member 20, a driving member 30 and a locking member 40. The fixed seat 10 is fixedly mounted on the rear fork tube 2015 of the frame 201, the operating member 20 is pivotally connected to the fixed seat 10, the driving member 30 is movably clamped on either the fixed seat 10 or the operating member 20, and is slidably abutted against the push surface A of the other of the two, the locking member 40 is arranged in a linked manner with the driving member 30, and is arranged along the direction of preventing the rear wheel 202 from rotating relative to the rear leg tube 2011, and is specifically located at the pivot end B between the rear leg 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 push surface A abutting against it, thereby driving the locking member 40 to move in a direction away from or close to the pivot end B between the rear leg tube 2011 and the rear wheel 202, until it moves to a release position or a locking position that allows or restricts the rear wheel 202 from rotating relative to the frame 201. Of course, the driving member 30 can also be set as other structures that are movably inserted on either the fixed seat 10 or the operating member 20.

[0052] 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 by the traction member 50, so as to realize the linkage setting of the two. The traction member 50 is specifically a steel wire rope. Figure 1 As shown by the middle dotted line, the traction 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, thereby guiding and limiting the movement of the traction member 50, making the movement smoother.

[0053] Specifically, the rear wheel rotation locking control mechanism 100 of the present invention further includes a first elastic member 60, which is disposed between the driving member 30 and the fixing seat 10 or between the operating member 20 and the fixing seat 10, and constantly drives the driving member 60 to drive the locking member 40 to move in a direction that prevents the rear wheel 202 from rotating relative to the frame 201, that is, constantly drives the locking member 40 to reset to a locking position that prevents the rear wheel 202 from rotating relative to the frame 201. The first elastic member 60 is a compression spring or a torsion spring. Figure 6 As shown, the rear wheel rotation locking control mechanism 100 of the present invention further includes a second elastic member 70, which is disposed between the locking member 40 and the rear leg tube 2011. The second elastic member 70 constantly drives the locking member 40 to move in a direction that prevents the rear wheel 202 from rotating relative to the frame 201, that is, constantly drives the locking member 40 to return to a locking position that prevents the rear wheel 202 from rotating relative to the frame 201. The second elastic member 70 is a compression spring.

[0054] See also Figure 2 In this embodiment, the fixing seat 10 includes a base 11 and a pivot seat 12 connected as one body, the base 11 is fixed to the rear fork tube 2015 of the frame 201, the operating member 20 is pivoted to the opposite side of the pivot seat 12, and the driving member 30 is movably clamped to the opposite other side of the pivot seat 12. The pivot seat 12 is provided with a pivot hole 121 for the operating member 20 to pivot and a through hole 122 for the driving member 30 to pass through. The operating member 20 is provided with a sleeve hole 21 corresponding to the pivot hole 121, and the operating member 20 is pivoted to the pivot seat 12 through a pivot shaft (not shown in the figure) passed through the pivot hole 121 and the sleeve hole 21.

[0055] Specifically, the pivot seat 12 includes a placement groove 12a having a through hole 122, one end of the driving member 30 is movably clamped in the placement groove 12a, and the other end of the driving member 30 passes through the through hole 122 and abuts against the push surface A of the operating member 20. More specifically, the driving member 30 includes an abutting portion 31 and a positioning portion 32 connected as one body, the abutting portion 31 abuts against the push surface A of the operating member 20, and the positioning portion 32 is movably clamped on the pivot seat 12 of the fixed seat 10. The abutting portion 31 is specifically cylindrical, and the positioning portion 32 is provided with a clamping platform 321 connected to the traction member 50, and one end of the traction member 50 is wound around the clamping platform 321. Preferably, the fixing seat 11 further comprises an end cover 13, which is used to cover the placement groove 12a. The driving member 30 can move in the placement groove 12a defined by the pivot seat 12 and the end cover 13. Then, the first elastic member 60 can also be installed between the end cover 13 and the positioning portion 32, and can also play a role in driving the locking member 40 to automatically reset to the locking position. Furthermore, a clamping portion (not shown in the figure) can be provided on the end cover 13 or the pivot seat 12 to position the driving member 30 at the desired driving position. In addition, a through hole for the traction member 50 to pass through is also provided on the end cover 13.

[0056] refer to Figures 3 to 5 The end of the operating member 20 that is close to the pivot seat 12 is pivotally connected to the pivot seat 12 to form a pivot portion 22, and the other end of the operating member 20 that is away from the pivot seat 12 can rotate around the pivot portion 22 to form an operating portion 23. The push surface A is located on the side where the pivot portion 22 is pivotally connected to the pivot seat 12 of the fixed seat 10. The push surface A is an inclined surface or a curved surface, and the shape of the inclined surface can be at least one of a straight line, a wedge, a spiral and a wave. When the operating member 20 is pressed downward or pushed upward, under the action of the push surface A, the driving member 30 slides on the inclined surface or the curved surface, and then the locking member 40 can be pulled or pushed to move away from or close to the pivot end B to unlock or lock, thereby allowing or restricting the rear wheel 202 to rotate around the rear leg tube 2011. Specifically, when the driving member 30 slides to the first position in which it abuts against the relatively high position of the pushing surface A, the locking member 40 moves upward to disengage from the engagement with the pivot end B, and moves to a release position for releasing the restriction on the rotation of the rear wheel 202 relative to the frame 201, at which 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 under the action of the elastic force of the first elastic member 60 and the second elastic member 70, so that the driving member 30 is in the second position in which it abuts against the relatively low position of the pushing surface A, and the locking member 40 moves downward to be engaged with the pivot end B, and is located at a locking position for restricting the rotation of the rear wheel 202 relative to the frame 201.

[0057] refer to Figure 6 and Figure 7 The rear wheel rotation locking mechanism 100 of the present invention also includes a connecting component 80, one end of which is connected to the axle 2021 of the rear wheel 202, and the other end of the connecting component 80 is rotatably connected to the rear leg tube 2011. The locking member 40 is inserted into the insertion groove 2017 at the tube mouth of the rear leg tube 2011 with clearance fit, and can be moved from the tube mouth to the limiting groove 811 inserted in the connecting component 80 or retreated from the limiting groove 811 to the insertion groove 2017, thereby limiting or allowing the rear wheel 202 to rotate relative to the rear leg tube 2011.

[0058] Specifically, the connecting assembly 80 includes a connecting seat 81, a connecting block 82 and an adapter shaft 83 installed at two opposite ends of the connecting seat 81. The connecting block 82 is connected to the axle 2021 of the rear wheel 202, and a spring 84 for shock absorption is also connected between the connecting block 82 and the connecting seat 81 along the radial direction of the axle 2021. The adapter shaft 83 is rotatably installed in the connecting seat 81, and is arranged along the radial direction of the axle 2021 and can be extended into the rear leg tube 2011 from the pipe mouth of the rear leg tube 2011, that is, the rear leg tube 2011 is sleeved on the upper side end of the adapter shaft 80. The limiting groove 811 is arranged along the radial direction of the axle 2021 and is located beside the adapter shaft 83. Preferably, the through slot 2017 and the limiting slot 811 are arranged in a straight line beside the adapter shaft 80, so that the locking member 40 can be vertically inserted into the through slot 2017 and the limiting slot 811, thereby better limiting the rotation of the rear wheel 202 around the adapter shaft 80 relative to the rear leg tube 2011. Generally, a rotation of 90° can change the direction of the rear wheel 202 from forward and backward movement to left and right translation.

[0059] Back to Figure 1 and Figure 2 In the preferred embodiment of the present application, the fixed seat 10 and the operating member 20 are arranged in a one-to-one correspondence, and the driving member 30, the locking member 40 and the pulling member 50 are arranged in a one-to-one correspondence. When the number of the fixed seat 10 is one, two driving members 30 are symmetrically arranged on one fixed seat 10, and the two driving members 30 are respectively in contact with the two pushing surfaces A on the opposite sides of one operating member 20, and a pulling member 50 is connected between each driving member 30 and the locking member 40. Then, the unlocking operation can be conveniently realized by pressing the operating part 20 with one hand or one foot, and it will automatically reset to the locked state when the pressing is released, with a simple structure and convenient operation.

[0060] Specifically, the fixed seat 10 is arranged at the center position of the rear fork tube 2015, the pivot seat 12 is U-shaped, the operating member 20 is pivoted in the groove 12b at the center of the pivot seat 12, and two mounting grooves 12a are symmetrically provided on the two side walls of the pivot seat 12. After the two driving members 30 are clamped in the corresponding mounting grooves 12a and pass through the corresponding through holes 122, they are correspondingly abutted with the two pushing surfaces A provided on the two opposite sides of the operating member 20, and the two traction members 50 are inserted into the two rear leg tubes 2012.

[0061] Of course, in other embodiments, in order to achieve stability and smoothness of adjustment, the fixed seat 10, the operating member 20, the driving member 30, the locking member 40 and the pulling member 50 are all arranged in a one-to-one correspondence. Then the number of the fixed seats 10 can be two, and the two fixed seats 10 are symmetrically arranged on the rear fork tube 2015. An operating member 20 and a driving member 30 are connected to two opposite sides of a fixed seat 10 in a one-to-one correspondence. Then, by operating the two symmetrically arranged operating members 20, the force is more uniform during adjustment, and the release is more stable and smooth.

[0062] Please refer to the following Figures 8 to 9 When the rear wheel rotation locking control mechanism 100 is installed between the rear leg tube 2011 and the rear wheel 202, the difference between the rear wheel rotation locking control mechanism 100 installed between the rear fork tube 2015 and the rear wheel 202 is that:

[0063] The fixed seat 10 is fixedly connected to the rear leg tube 2011 of the frame through its base 11. In addition to being the same as above, the structures and matching relationships of the fixed seat 10, the operating member 20, the driving member 30, the locking member 40 and the pulling member 50 can also be set as follows: the driving member 30 is rotatably clamped on one of the fixed seat 10 and the operating member 20, and can be rotatably abutted with the push surface A of the other of the two. Among them, the push surface A is spiral. Specifically, the fixed seat 10 or the operating member 20 can be provided with a threaded hole 24 corresponding to the external thread on the abutting portion 31 of the driving member 30. As the operating member 20 rotates relative to the fixed seat 10, the abutting portion 31 of the driving member 30 enters and exits the threaded hole 24 under the action of the push surface A formed by the spiral internal thread in the threaded hole 24, so that it can be telescopically rotated relative to the fixed seat 10, and then pull the locking member 40 to achieve unlocking or locking.

[0064] Specifically, when the fixed seat 10, the operating member 20, the driving member 30, the locking member 40 and the traction member 50 are two corresponding to each other, the two fixed seats 10 can be separately arranged on the two rear leg tubes 2011, and the number of threaded holes 24 on each operating member 20 is one. The two traction members 50 are inserted into the rear leg tubes 2011 on both sides and connected with the corresponding driving members 30.

[0065] When the fixed seat 10 and the operating member 20 are respectively provided as one, and the driving member 30, the locking member 40 and the pulling member 50 are respectively provided as two, the fixed seat 10 can be fixedly connected to the rear leg tube 2011 on one side, the operating member 20 has two threaded holes 24 arranged at intervals, the two driving members 30 are clamped on the fixed seat 10 and abut against the push surface A formed by the inner walls of the two threaded holes 24 one by one, one pulling member 50 is inserted into the rear leg tube 2011 provided with the fixed seat 10 and connected with one driving member 30, and the other pulling member 50 is inserted from the other rear leg tube 2011 through the rear fork tube 2015 and then into the rear leg tube 2011 with the fixed seat 10, and then connected with the other driving member 30. The two pulling members 50 can be as follows Figure 8 The method shown by the middle dotted line is inserted into the rear leg tube 2011, the rear leg tube 2011 and the rear fork tube 2015.

[0066] Final Reference Fig.10The structure can also be simplified as follows: 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 winding through the arc-shaped wire groove 25 of the operating member 20, and then pushes the operating member 20 to rotate around the fixed seat 10, so that the driving member 30 can be driven to wind around the arc-shaped wire groove 25 in the operating member 20 to drive the locking member 10 to move to the unlocking position; or release along the wire groove 25 to drive the locking member 10 to move to the locking position.

[0067] Compared with the prior art, the rear wheel rotation lock control mechanism 100 of the present invention includes a fixed seat 10 fixed on the frame 201, an operating member 20 pivotally connected to the fixed seat 10, and a driving member 30 and a locking member 40 that are arranged in a linked manner. The driving member 30 is movably inserted into either the fixed seat 10 or the operating member 20, and is abutted or fixedly connected to the other, and is arranged in a direction to prevent the frame 201 and the rear wheel 202 from rotating relative to each other in combination with the locking member 40. Therefore, by pressing the operating member 20 to rotate it relative to the fixed seat 10, the driving member 30 can be driven to move or rotate relative to the other under the action of the operating member 20 or the fixed seat 10 that is fixedly connected or abutted therewith, thereby driving the locking member 40 to move to the unlocking position to release the restriction on the relative rotation between the rear wheel 202 and the frame 201, and the rear wheel 202 can be rotated relative to the frame 201 to a required use angle or folding angle for use or storage. The rear wheel rotation locking mechanism 100 of the present invention has a simple structure and is easy to operate, so that the rear wheel 202 can be freely switched between desired angles, thereby effectively ensuring the comfort and adaptability of the child carrier 200 having the rear wheel rotation locking mechanism 100 .

[0068] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention are still within the scope covered by the present invention.

Claims

1. A rear wheel steering lock control mechanism, suitable for being assembled between a frame and a rear wheel of a child carrier that are steerably connected, characterized in that: The rear wheel steering lock control mechanism includes a fixed seat, an operating member, a driving member and a locking member, the fixed seat is fixedly arranged on the frame, the operating member is pivotally connected to the fixed seat, the driving member is movably inserted into either the fixed seat or the operating member, and is fixedly connected or abutted with the other of the two, the locking member and the driving member are interlocked and arranged in a direction that prevents the rear wheel and the frame from turning; the operating member is operated to rotate it relative to the fixed seat, so that the driving member moves or rotates relative to the fixed seat under the action of the operating member fixedly connected or abutted therewith, or moves or rotates relative to the operating member under the action of the fixed seat fixedly connected or abutted therewith, thereby driving the locking member to move to a release position or a locking position that allows or restricts the rear wheel from turning relative to the frame.

2. The rear wheel steering lock control mechanism according to claim 1, characterized in that: The driving member is movably or rotatably clamped on any one of the fixing seat and the operating member, and is slidably or rotatably abutted against the pushing surface of the other one of the two.

3. The rear wheel steering lock control mechanism according to claim 2, characterized in that: The pushing surface is an inclined surface or a curved surface.

4. The rear wheel steering lock control mechanism according to claim 3, characterized in that: The shape of the inclined surface is at least one of a straight line, a wedge, a spiral and a wave.

5. The rear wheel steering lock control mechanism according to claim 3, characterized in that: When the driving member is in a first position abutting against a relatively high position of the pushing surface, the locking member moves to the unlocking position; when the driving member is in a second position abutting against a relatively low position of the pushing surface, the locking member moves to the locking position.

6. The rear wheel steering lock control mechanism according to claim 2, characterized in that: The fixing seat is fixed on the rear fork tube of the frame or on the rear leg tube of the frame.

7. The rear wheel steering lock control mechanism according to claim 6, characterized in that: The fixing seat, the operating member, the driving member and the locking member are arranged in a one-to-one correspondence.

8. The rear wheel steering lock control mechanism according to claim 6, characterized in that: The fixing seat and the operating member are arranged in a one-to-one correspondence, and the driving member and the locking member are arranged in a one-to-one correspondence.

9. The rear wheel steering lock control mechanism according to claim 8, characterized in that: Two driving members are symmetrically arranged on a fixing seat, and the two driving members are in corresponding contact with two pushing surfaces on opposite sides of an operating member.

10. The rear wheel steering lock control mechanism according to claim 6, characterized in that: The fixing seat includes a base and a pivot seat connected as an integral whole, the base is fixedly connected to the rear fork tube of the frame or the rear leg tube of the frame, the operating member is pivotally connected to the opposite side of the pivot seat, and the driving member is movably clamped to the other opposite side of the pivot seat.

11. The rear wheel steering lock control mechanism according to claim 10, characterized in that: The pivot seat is provided with a pivot hole for the operating member to pivot and a through hole for the driving member to penetrate.

12. The rear wheel steering lock control mechanism according to claim 11, characterized in that: The pivot seat comprises a placement groove with a through hole, one end of the driving member is movably engaged 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.

13. The rear wheel steering lock control mechanism according to claim 12, characterized in that: The pivot seat is U-shaped, and an operating member is pivotally connected to a groove at the center of the pivot seat. Two receiving grooves are symmetrically provided on both side walls of the pivot seat. After the two driving members are clamped in the corresponding receiving grooves and pass through the corresponding through holes, they abut against two push surfaces provided on two opposite sides of the operating member.

14. The rear wheel steering lock control mechanism according to claim 12, characterized in that: Also included is an end cover, which is used to cover the placement groove.

15. The rear wheel steering lock control mechanism according to claim 2, characterized in that: One end of the operating member is pivotally connected to the fixing seat to form a pivoting portion, and the other end of the operating member can rotate around the pivoting portion to form an operating portion.

16. The rear wheel steering lock control mechanism according to claim 15, characterized in that: The pushing surface is provided on one side of the pivoting portion pivotally connected to the fixing seat.

17. The rear wheel steering lock control mechanism according to claim 1, characterized in that: It also includes a traction member, through which the driving member and the locking member are connected.

18. The rear wheel steering lock control mechanism according to claim 17, characterized in that: The traction member is a steel wire rope.

19. The rear wheel steering lock control mechanism according to claim 2, characterized in that: The driving member comprises an abutting portion and a positioning portion which are connected as one body, the abutting portion abuts against the operating member, and the positioning portion is movably clamped on the fixing seat.

20. The rear wheel steering lock control mechanism according to claim 19, characterized in that: The abutting portion is cylindrical.

21. The rear wheel steering lock control mechanism according to claim 1, characterized in that: The operating member or the fixing seat is provided with a guide groove for guiding the driving member.

22. The rear wheel steering lock control mechanism according to claim 1, characterized in that: It also includes a connecting component, one end of which is connected to the axle of the rear wheel, and the other end of which is rotatably connected to the rear leg tube of the frame. The locking piece is inserted into a penetration groove at the pipe mouth of the rear leg tube with clearance fit, and can be moved from the pipe mouth to be inserted into the limiting groove of the connecting component or retracted from the limiting groove to the penetration groove to limit or allow the rear wheel to turn relative to the rear leg tube.

23. The rear wheel steering lock control mechanism according to claim 22, characterized in that: The penetration groove and the limiting groove are arranged in a straight line.

24. The rear wheel steering lock control mechanism according to claim 22, characterized in that: The connecting assembly includes a connecting seat, connecting blocks and an adapter shaft installed at two opposite ends of the connecting seat, the connecting block is connected to the wheel axle, the adapter shaft is rotatably installed in the connecting seat, and is arranged along the radial direction of the wheel axle and can extend into the rear leg tube, and the limiting groove is arranged along the radial direction of the wheel axle and is located beside the adapter shaft.

25. The rear wheel steering lock control mechanism according to claim 24, characterized in that: A spring for shock absorption is also connected between the connecting block and the connecting seat along the radial direction of the wheel axle.

26. The rear wheel steering lock control mechanism according to claim 1, characterized in that: It also includes a first elastic member, which is arranged between the driving member and the fixing seat or between the operating member and the fixing seat, and the first elastic member constantly drives the driving member to drive the locking member to move toward the locking position.

27. The rear wheel steering lock control mechanism according to claim 26, characterized in that: The first elastic member is a compression spring or a torsion spring.

28. The rear wheel steering lock control mechanism according to claim 1, characterized in that: It also includes a second elastic member, which is arranged between the locking member and the rear leg tube of the frame, and the second elastic member constantly drives the locking member to move toward the locking position.

29. The rear wheel steering lock control mechanism according to claim 28, characterized in that: The second elastic member is a compression spring.

30. A child carrier, comprising a frame, a rear wheel steerably connected to the frame, and a rear wheel steering lock control mechanism connected between the frame and the rear wheel, characterized in that: The rear wheel steering locking mechanism is as described in any one of claims 1 to 29.

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