CN221068180U - Child cart - Google Patents

Abstract

The utility model discloses a child stroller, which comprises a stroller frame, a first seat assembly, a second seat assembly, a first connecting assembly for grafting the first seat assembly and a second connecting assembly for grafting the second seat assembly, wherein the first connecting assembly comprises a base arranged at the lower part of the stroller frame and a first mounting seat arranged at one side of the base and used for mounting the first seat assembly, the first seat assembly is detachably connected with the first mounting seat, the second connecting assembly is arranged at the upper part of the stroller frame, the child stroller has a first use state and a second use state, the upper part of the first mounting seat is shielded when the child stroller is in the first use state, the first seat assembly is disconnected with the first mounting seat, and the first mounting seat is naked above the base when the child stroller is in the second use state and is connected with the first mounting seat. The child stroller is simple in structure, convenient to switch between a first use state and a second use state, and convenient to use.

Description

Child cart

Technical Field

The utility model relates to the technical field of children products, in particular to a child trolley.

Background

The single-double convertible stroller can be used as a single-person stroller or a double-person stroller, and is favored by more consumers due to the advantages of functions and resource conservation. The children's barrow capable of being converted by single person and double person in the prior art has the problems of complex structure and inconvenient conversion between the single person and double person using states.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provide a child stroller which is simple in structure and convenient to switch between a first use state and a second use state.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

The utility model provides a children's shallow, includes shallow frame, first seat subassembly, second seat subassembly, is used for the grafting first coupling assembling of first seat subassembly and be used for the grafting second coupling assembling of second seat subassembly, first coupling assembling is including setting up the base of the lower part of shallow frame and setting up base one side is used for installing first seat subassembly's first mount pad, first seat subassembly with first mount pad detachably connects, second coupling assembling sets up the upper portion of shallow frame, children's shallow has first service condition and second service condition, works as when children's shallow is in first service condition, first seat subassembly with first mount pad disconnect, works as children's shallow is in second service condition, first mount pad leaks the top of base, first seat subassembly with first mount pad is connected.

Preferably, the first connecting component is arranged at the lower part of the trolley frame in an adjustable direction, when the stroller is in a first use state, the first mounting seat is positioned below the base, and when the stroller is in a second use state, the first mounting seat is positioned above the base.

Further, the base is rotatably connected with the lower portion of the cart frame through a first shaft, and the first shaft extends in the left-right or front-rear direction.

Further, the base is detachably connected with the lower portion of the cart frame.

Further, the child stroller further comprises a first locking mechanism for locking the relative positions of the base and the stroller frame, the first locking mechanism comprises a first locking piece slidably arranged on one of the base and the stroller frame and a first locking groove matched with the first locking piece, when the first locking mechanism is in a locking state, the first locking piece is inserted into the first locking groove, and when the first locking mechanism is in an unlocking state, the first locking piece is separated from the first locking groove.

Still further, the child stroller further comprises a first unlocking mechanism for driving the first locking mechanism to unlock, the first unlocking mechanism comprises a first unlocking piece which can be slidably arranged on a component of the first locking piece arranged in the base and the stroller frame, a first inclined surface is arranged on the first unlocking piece, a second inclined surface matched with the first inclined surface is arranged on the first locking piece, and the first inclined surface and the second inclined surface are in propping fit.

Preferably, the base is fixedly arranged at the lower part of the trolley frame, the first mounting seat is fixedly arranged above the base, the first connecting assembly further comprises a housing rotationally connected with the base, when the trolley is in a first use state, the housing is shielded above the first mounting seat, and when the trolley is in a second use state, the housing is far away from above the first mounting seat.

Preferably, the second connecting component is arranged on the upper part of the trolley frame in a manner of up-down sliding, when the trolley is in a first use state, the second connecting component is positioned at a first height position on the trolley frame, when the trolley is in a second use state, the second connecting component is positioned at a second height position on the trolley frame, and the first height is smaller than the second height.

Further, the child stroller further comprises a second locking mechanism for locking the relative positions of the second connecting assembly and the stroller frame, the second locking mechanism comprises a second locking piece slidably arranged on one of the second connecting assembly and the stroller frame and a second locking groove matched with the second locking piece, when the second locking mechanism is in a locking state, the second locking piece is inserted into the second locking groove, when the second locking mechanism is in an unlocking state, the second locking piece is separated from the second locking groove, the child stroller further comprises a second unlocking mechanism for unlocking the second locking mechanism, the second unlocking mechanism comprises a second unlocking piece rotatably arranged on a part of the second connecting assembly and the stroller frame, and the second locking piece is rotatably connected with one end part of the second unlocking piece.

Further, the second connecting assembly comprises a sliding part which is arranged at the upper part of the trolley frame in a vertically sliding way and a second mounting seat for mounting the second seat assembly, and the second mounting seat is rotationally connected with the sliding part.

Preferably, the second connection assembly includes a second mount for mounting the second seat assembly, the second seat assembly being rotatably connected to the second mount or the second seat assembly being detachably connected to the second mount.

Preferably, the cart frame comprises a front support, a rear support and a push rod, wherein the upper part of the front support, the upper part of the rear support and the lower part of the push rod are coaxially connected in a rotating manner, the first connecting component is arranged at the lower part of the front support, and the second connecting component can be slidably arranged on the push rod along the length extending direction of the push rod.

Further, the front support comprises a main rod and support rods which extend forwards from the lower part of the main rod to the left and right sides respectively, the upper part of the main rod, the upper part of the rear support and the lower part of the push rod are coaxially and rotatably connected, and the first connecting assembly is arranged between the left side and the right side of the support rods.

Further, the rear bracket is respectively arranged at the left side and the right side of the front bracket and the push rod, the upper parts of the front bracket, the upper parts of the rear brackets at the two sides and the lower part of the push rod are coaxially and rotatably connected through a rotating joint, the rotating joint comprises a first joint seat arranged at the upper part of the front bracket, a second joint seat arranged at the upper part of the rear bracket and a third joint seat arranged at the lower part of the push rod, and the second joint seat, the first joint seat, the third joint seat and the second joint seat at the other side at one side are sequentially arranged and coaxially and rotatably connected through a second shaft;

The revolute joint further comprises a third locking member for locking the relative position between the second and first joint seats on one side, a fourth locking member for locking the relative position between the first and third joint seats, and a fifth locking member for locking the relative position between the second and third joint seats on the other side;

The rotating joint is provided with a locking state and an unlocking state, when the rotating joint is in the locking state, the third locking piece is respectively matched with the second joint seat and the first joint seat on one side, the fourth locking piece is respectively matched with the first joint seat and the third joint seat, and the fifth locking piece is respectively matched with the second joint seat and the third joint seat on the other side;

When the rotary joint is in an unlocking state, one of the second joint seat and the first joint seat on one side is matched with the third locking piece, and the other is disengaged from the third locking piece; one of the first joint seat and the third joint seat is matched with the fourth locking piece, and the other is disengaged from the fourth locking piece; one of the second joint seat and the third joint seat on the other side is matched with the fifth locking piece, and the other is disengaged from the fifth locking piece.

Further, the child stroller further comprises a third unlocking mechanism for driving the rotary joint to unlock from the locking state, the third unlocking mechanism comprises an unlocking handle arranged on the push rod in a sliding manner, a rotating piece arranged in the third joint seat in a rotatable manner, and a traction rope with one end arranged on the unlocking handle, the other end of the traction rope is arranged on the rotating piece, the rotating piece is respectively matched with the fourth locking piece and the fifth locking piece, and the fourth locking piece is matched with the third locking piece.

Still further, the rotation piece is located between the fourth locking piece and the fifth locking piece, the left and right sides of the rotation piece is provided with the third inclined plane respectively, be provided with on the fourth locking piece with the fourth inclined plane of third inclined plane looks adaptation, be provided with on the fifth locking piece with the fifth inclined plane of third inclined plane looks adaptation, fourth inclined plane with the fifth inclined plane respectively with correspond one side the third inclined plane looks offset is established the cooperation.

Further, the fourth locking member is provided with a convex portion protruding toward the third locking member, and the convex portion is abutted against an end face of the third locking member facing the fourth locking member.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the child cart has the first use state and the second use state, and the child cart is convenient to switch between the first use state and the second use state, so that the child cart is convenient to use.

Drawings

Fig. 1 is a schematic perspective view of the stroller of embodiment 1 in a second use state;

FIG. 2 is a schematic side view of the stroller of example 1 in a second use state;

FIG. 3 is a perspective view of the stroller of example 1 in a first use configuration (with the second seat assembly mounted in a forward direction);

FIG. 4 is a schematic side view of the child stroller of example 1 in a first use configuration (second seat assembly forward mounted);

FIG. 5 is a perspective view of the stroller of example 1 in a first use configuration (with the second seat assembly mounted in a forward direction);

FIG. 6 is a schematic side view of the child stroller of example 1 in a first use configuration (second seat assembly forward mounted);

Fig. 7 is a schematic cross-sectional view of the connection portion between the front support and the first connecting component of the stroller of this embodiment 1 (the stroller is in a first use state, and the first locking mechanism is in a locked state);

Fig. 8 is a schematic cross-sectional view of the connection portion between the front support and the first connecting component of the stroller of this embodiment 1 (the stroller is in a second use state, and the first locking mechanism is in a locked state);

FIG. 9 is a schematic cross-sectional view of the stroller of embodiment 1 at the connection portion between the front support and the first connection assembly (the first locking mechanism is in an unlocked state when the stroller is switched between the first use state and the second use state);

FIG. 10 is an exploded view of the stroller of example 1 at the connection point of the front frame and the first connection assembly;

FIG. 11 is a schematic side view of the stroller of example 1 at the connection location of the push rod and the second connection assembly;

FIG. 12 is a schematic cross-sectional view of the stroller of embodiment 1 at the connection portion of the push rod and the second connecting assembly (the second locking mechanism is in a locked state);

FIG. 13 is a schematic cross-sectional view of the stroller of embodiment 1 at the connection portion of the push rod and the second connecting assembly (the second locking mechanism is in an unlocked state);

fig. 14 is a schematic cross-sectional view of the child stroller of this embodiment 1 at the revolute joint portion (the revolute joint is in a locked state);

Fig. 15 is a schematic view showing the relative positions of the third locking member, the fourth locking member, the fifth locking member and the rotating member of the child stroller of the present embodiment 1 in the locked state;

Fig. 16 is a schematic cross-sectional view of the stroller of embodiment 1 at the revolute joint portion (the revolute joint is in an unlocked state);

fig. 17 is a schematic view showing the relative positions of the third locking member, the fourth locking member, the fifth locking member and the rotating member of the child stroller of the present embodiment 1 in the unlocked state;

fig. 18 is a perspective view of the fourth locking member of the stroller of embodiment 1;

fig. 19 is a schematic perspective view of a fifth locking member of the stroller of embodiment 1;

fig. 20 is a perspective view of a rotating member of the stroller of embodiment 1;

FIG. 21 is a schematic perspective view of the stroller of embodiment 1 during folding;

FIG. 22 is one of the side views of the stroller of example 1 during folding;

FIG. 23 is a second perspective view of the stroller of embodiment 1 during folding;

FIG. 24 is a second schematic side view of the stroller of example 1 during folding;

fig. 25 is a schematic perspective view of the stroller of embodiment 1 in a folded state;

FIG. 26 is a schematic side view of the stroller of example 1 in a folded condition;

Fig. 27 is a schematic perspective view of the first connection assembly of the stroller of embodiment 2 disposed on the front support (the stroller is in the first use state);

fig. 28 is a schematic perspective view of the stroller of embodiment 2 with the first connection assembly disposed on the front support (the stroller is in the second use state).

Wherein: 11. a front bracket; 111. a main rod; 112. a support rod; 113. a first joint seat; 12. a rear bracket; 121. a second joint seat; 13. a push rod; 131. a second locking groove; 132. a third joint seat; 14. a second shaft; 2. a first seat assembly; 3. a second seat assembly; 4. a first connection assembly; 41. a base; 411. a first locking groove; 42. a first mount; 43. a first shaft; 44. a housing; 5. a second connection assembly; 51. a slider; 52. a second mounting base; 61. a first locking member; 611. a second inclined surface; 62. a first unlocking member; 621. a first inclined surface; 71. a second locking member; 72. a second unlocking member; 81. a third locking member; 82. a fourth locking member; 821. a first concave portion; 821a, fourth inclined plane; 822. a convex portion; 83. a fifth locking member; 831. a second concave portion; 831a, a fifth bevel; 84. unlocking the handle; 85. a rotating member; 851. convex ribs; 851a, a third bevel; 91. a front wheel assembly; 92. and a rear wheel assembly.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

In the following description, the directions of "front", "rear", "left", "right", "up", "down", etc. are referred to as "front" in the left direction in the drawing, "rear" in the right direction, the upper direction is "up", the lower direction is "down", and the directions perpendicular to the paper surface in the drawing are "left" and "right", respectively, according to fig. 2. The above directional definitions are merely provided to facilitate the description of the utility model and to simplify the description and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operate in a particular orientation and are not to be construed as limiting the utility model.

Example 1

As shown in fig. 1 to 6, the stroller of the present utility model includes a stroller frame, a first seat assembly 2, a second seat assembly 3, a first connection assembly 4, and a second connection assembly 5. The first connection assembly 4 is used to graft the first seat assembly 2 to the stroller frame and the second connection assembly 5 is used to graft the second seat assembly 3 to the stroller frame.

The first connecting assembly 4 includes a base 41, and the base 41 has two opposite end surfaces. The first connection assembly 4 further includes a first mount 42 fixedly provided on one of opposite end surfaces of the base 41, and the first seat assembly 2 is detachably connectable with the first mount 42. The other of the opposite end surfaces of the base 41 is preferably a plane.

The second link assembly 5 is slidably provided at an upper portion of the cart frame in an up-down direction so that a height of the second link assembly 5 on the cart frame can be adjusted to place the second seat assembly 3 at different height positions.

As shown in fig. 11, the second connection assembly 5 includes a slider 51 and a second mount 52, the slider 51 being slidably provided on the cart frame in the up-down direction, the second mount 52 being connected to the slider 51. The second mount 52 is preferably rotatably coupled to the slider 51. Thus, when the stroller is folded, the second mounting seat 52 can rotate relative to the sliding member 51, so that the folded height of the stroller can be reduced, and the folded structural volume of the stroller can be reduced.

The second seat assembly 3 is preferably rotatably provided on the second mounting seat 52 about a rotation axis extending in the up-down direction, so that the second seat assembly 3 can be rotated with respect to the second mounting seat 52, thereby changing the mounting direction of the second seat assembly 3. If the second seat assembly 3 can be installed in a forward direction, the child is seated on the second seat assembly 3 with the child's face facing forward, as shown in fig. 3 and 4. The second seat assembly 3 can also be installed in a reverse orientation with the child sitting on the second seat assembly 3 with the child's face facing rearward as shown in fig. 5 and 6.

In other embodiments, the second seat assembly 3 may be removably coupled to the second mount 52 such that the second seat assembly 3 may be mounted to the second mount 52 either in a forward or reverse direction after being removed from the second mount 52.

The stroller has a first use state and a second use state. When the stroller is in the first use condition, the upper side of the first mount 42 is blocked, the first seat assembly 2 is disconnected from the first mount 42, and the slide 51 is at a relatively low first height position on the stroller frame, such that the second seat assembly 3 is at a relatively low first height position. As shown in fig. 1 and 2. In this case, the stroller frame has only one seat assembly, and the stroller is used as a single-person stroller.

When the stroller is in the second use state, the first mounting seat 42 is exposed above the base 41, the first seat assembly 2 is connected to the first mounting seat 42, and the slider 51 is at a second, relatively high height position on the stroller frame, such that the second seat assembly 3 is at the second, relatively high height position. As shown in fig. 3 to 6. At this time, both the first seat assembly 2 and the second seat assembly 3 can be used for children, and the stroller can be used as a double stroller.

The stroller can rotate the second seat assembly 3 relative to the second mount 52 in both the first and second use conditions, thereby positively mounting the second seat assembly 3, as shown in fig. 3 and 4. Or the second seat assembly 3 is installed in the opposite direction as shown in fig. 5 and 6.

In this embodiment, the first connection assembly 4 is arranged azimuthally at the lower part of the trolley frame. So that the first mount 42 may be positioned above the base 41 and exposed to mount the first seat assembly 2. The first mounting seat 42 may also be located below the base 41 such that the base 41 forms a barrier over the first mounting seat 42 such that the first seat assembly 2 cannot be mounted.

Specifically, the base 41 is rotatably connected to the cart frame via a first shaft 43, and the first shaft 43 extends in the left-right or front-rear direction. The first mount 42 can be rotated above or below the base 41 by rotating the base 41 relative to the stroller frame about the first axis 43.

When the stroller is in the first use state, the first mounting seat 42 is located below the base 41, as shown in fig. 1 and 2. At this time, the base 41 may be used as a foot pedal for the child to step on. When the stroller is in the second use state, the first mounting base 42 is located above the base 41, as shown in fig. 3-6. When the child cart is switched between the first use state and the second use state, the base 41 is rotated relative to the cart frame, and the sliding piece 51 slides relative to the cart frame, so that the child cart is convenient to switch between the first use state and the second use state, and the child cart is convenient to use.

Of course, the base 41 may be detachably connected to the lower portion of the stroller frame, so that the first connecting assembly 4 may be detached from the stroller frame and then turned 180 degrees to be mounted on the stroller frame again, and the first mounting seat 42 may be located above or below the base 41 to switch the stroller between the first use state and the second use state.

The stroller further comprises a first locking mechanism for locking the relative position of the base 41 and the stroller frame, thereby allowing the stroller to be in a stable first and second use condition.

As shown in fig. 7 to 10, the first locking mechanism includes a first locking piece 61 slidably provided on one of the base 41 and the cart frame, and a first locking slot 411 provided on the other to be engaged with the first locking piece 61. When the first locking mechanism is in the locked state, the first locking piece 61 is partially inserted in the first locking slot 411, so that the base 41 cannot rotate relative to the cart frame, as shown in fig. 7 and 8. When the first locking mechanism is in the unlocked state, the first locking piece 61 is disengaged from the first locking slot 411, so that the base 41 can rotate relative to the cart frame, as shown in fig. 9.

Preferably, the first locking member 61 is slidably disposed on the stroller frame, and the first locking slots 411 are disposed on opposite sides of the base 1, respectively, so that the first locking member 61 can be partially inserted into the first locking slot 411 when the stroller is in both the first use state and the second use state, i.e., the first locking mechanism is in the locked state when the stroller is in both the first use state and the second use state, as shown in fig. 7 and 8.

The stroller further includes a first unlocking mechanism that unlocks the first locking mechanism when the first unlocking mechanism is operated in a locked state.

As shown in fig. 7 to 9, the first unlocking mechanism includes a first unlocking piece 62 slidably provided on a member provided with the first locking piece 61 in both the base 41 and the cart frame, a first inclined surface 621 is provided on the first unlocking piece 62, a second inclined surface 611 adapted to the first inclined surface 621 is provided on the first locking piece 61, and the first inclined surface 621 is in abutting engagement with the second inclined surface 611.

When the first lock mechanism presses the first unlocking member 62 in the locked state, the first unlocking member 62 slides relative to the base 41 or the cart frame, and the first locking member 61 gradually slides in a direction of being disengaged from the first lock slot 411 until the first lock mechanism is unlocked by the abutting engagement of the first inclined surface 621 and the second inclined surface 611.

The stroller further comprises a second locking mechanism for locking the relative position of the slide 51 and the stroller frame, thereby allowing the stroller to be in a stable first and second use condition.

As shown in fig. 12 and 13, the second locking mechanism includes a second locking piece 71 slidably provided on one of the slider 51 and the cart frame, and a first locking groove 131 provided on the other to be engaged with the second locking piece 71. When the second locking mechanism is in the locked state, the second locking piece 71 is partially inserted in the second locking groove 131 so that the slider 51 cannot slide with respect to the cart frame, as shown in fig. 12. When the second locking mechanism is in the unlocked state, the second locking member 71 is disengaged from the second locking groove 131, so that the slider 51 can slidably adjust the height with respect to the cart frame, as shown in fig. 13.

Preferably, the second locking member 71 is slidably disposed on the sliding member 51, and the second locking grooves 131 are provided at least two in the up-down direction, so that the second locking member 71 can be partially inserted into the first locking groove 131 when the stroller is in both the first use state and the second use state, i.e., the second locking mechanism is in the locked state when the stroller is in both the first use state and the second use state.

The stroller further includes a second unlocking mechanism that unlocks the second locking mechanism when the second locking mechanism is operated in a locked state.

As shown in fig. 12 and 13, the second unlocking mechanism includes a second unlocking member 72 rotatably provided on a member in which the second locking member 71 is provided in both the slider 51 and the cart frame, the second locking member 71 being rotatably connected to one end portion of the second unlocking member 72.

When the second locking mechanism presses the other end portion of the second unlocking member 72 in the locked state, the second unlocking member 72 is rotated relative to the sliding member 51, so that one end portion of the second unlocking member 72 moves away from the second locking groove 131, and the second locking member 71 is pulled to slide relative to the sliding member 51, so that the second locking member 71 is disengaged from the second locking groove 131, and the second locking mechanism is unlocked.

In the present embodiment, a specific structure of the cart frame is given, but the structure of the cart frame is not limited to the structure given in the present embodiment.

As shown in fig. 1 to 6 and 21 to 26, the cart frame includes a front bracket 11, a rear bracket 12 and a push rod 13, the rear bracket 12 is respectively disposed on the left and right sides of the front bracket 11 and the push rod 13, and the upper portion of the front bracket 11, the upper portion of the rear bracket 12 on the left and right sides and the lower portion of the push rod 13 are coaxially rotatably connected by a rotary joint. The front wheel assembly 91 is provided at a lower portion of the front bracket 11, and the rear wheel assembly 92 is provided at a lower portion of the rear bracket 12 on each side, respectively. The front support 11, the rear support 12 and the push rod 13 are rotatable relative to each other, so that the stroller has an unfolded state and a folded state.

The front bracket 11 includes a main rod 111 and support rods 112 extending from the lower part of the main rod 111 to the left and right sides, respectively, and in this embodiment, the support rods 112 have a U-shaped structure. The upper part of the main lever 111, the upper parts of the rear brackets 12 on the left and right sides and the lower part of the push lever 13 are coaxially rotatably connected by a rotary joint, and the front wheel assemblies 91 are respectively provided on the lower parts on the left and right sides of the strut 112. The base 41 is disposed in the U-shaped structure of the strut 112, and left and right sides of the base 41 are rotatably connected with corresponding sides of the strut 112 through the first shaft 43, respectively, or the base 41 is detachably disposed between the left and right sides of the strut 112. The first locking piece 61 is slidably provided on the strut 112.

The slider 51 is slidably provided on the push rod 13 in the longitudinal extending direction of the push rod 13. The second locking groove 131 is provided on the push rod 13.

The rotational joint has a locked state and an unlocked state, and is in the locked state when the stroller is in the unfolded state, and the relative positions among the front bracket 11, the rear bracket 12, and the push rod 13 are locked by the rotational joint. When the rotary joint is in the unlocking state, the front bracket 11, the rear bracket 12 and the push rod 13 can rotate relatively, so that the baby carriage is folded.

As shown in fig. 14 and 16, the rotary joint includes a first joint seat 113 fixedly provided at an upper portion of the front bracket 11, a second joint seat 121 fixedly provided at an upper portion of the rear bracket 12 on each side, and a third joint seat 132 fixedly provided at a lower portion of the push rod 13, the second joint seat 121, the first joint seat 113, the third joint seat 132 on one side, and the second joint seat 121 on the other side being sequentially provided and coaxially rotatably connected through the second shaft 14.

As shown in fig. 14 to 17, the rotary joint further includes a third lock 81, a fourth lock 82, and a fifth lock 83. The third locking member 81 is sleeved on the rotating shaft 14, and is slidably disposed between the second joint seat 121 and the first joint seat 113 at one side along the extending direction of the axis of the rotating shaft 14, and the third locking member 81 is used for locking the relative positions of the two. The fourth locking member 82 is sleeved on the rotating shaft 14, and is slidably disposed between the first joint seat 113 and the third joint seat 132 along the extending direction of the axis of the rotating shaft 14, and the fourth locking member 82 is used for locking the relative positions of the first joint seat 113 and the third joint seat 132. The fifth locking member 83 is sleeved on the rotating shaft 14, and is slidably disposed between the second joint seat 121 and the third joint seat 132 on the other side along the extending direction of the axis of the rotating shaft 14, and the fifth locking member 83 is used for locking the relative positions of the two.

When the rotary joint is in the locked state, the third locking member 81 is respectively engaged with the second joint seat 121 and the first joint seat 113 on one side, the fourth locking member 82 is respectively engaged with the first joint seat 113 and the third joint seat 132, and the fifth locking member 83 is respectively engaged with the second joint seat 121 and the third joint seat 132 on the other side, so that the front bracket 11, the rear bracket 12 and the push rod 13 cannot rotate relatively, as shown in fig. 14.

When the revolute joint is in the unlocked state, one of the second joint seat 121 and the first joint seat 131 on one side is engaged with the third locking member 81, and the other is disengaged from the third locking member 81; one of the first joint seat 113 and the third joint seat 132 is engaged with the fourth locking member 82, and the other is disengaged from the fourth locking member 82; one of the second joint seat 121 and the third joint seat 132 on the other side is engaged with the fifth locking piece 83, and the other is disengaged from the fifth locking piece 83, as shown in fig. 16.

In this embodiment, the outer peripheral surface of the third locking member 81 is provided with first locking teeth, and the second joint seat 121 and the first joint seat 113 on one side are respectively provided with first tooth grooves matching with the first locking teeth. The fourth locking member 82 is provided with second locking teeth on an outer circumferential surface thereof, and the first and third joint seats 113 and 132 are respectively provided with second tooth grooves engaged with the second locking teeth, as shown in fig. 17. The fifth locking member 83 has a third locking tooth provided on an outer circumferential surface thereof, and the second joint seat 121 and the third joint seat 132 on the other side have third tooth grooves respectively provided thereon to be engaged with the third locking tooth, as shown in fig. 18. When the rotary joint is in a locking state, the first locking teeth are respectively meshed with the first tooth grooves on two sides, the second locking teeth are respectively meshed with the second tooth grooves on two sides, and the third locking teeth are respectively meshed with the third tooth grooves on two sides. When the rotary joint is in an unlocking state, the first locking teeth are meshed with the first tooth grooves on the second joint seat 121 on one side and are disengaged from the first tooth grooves on the first joint seat 113; the second locking tooth engages with a second tooth slot on the first joint seat 113 and disengages from a second tooth slot on the third joint seat 132. The third locking tooth is engaged with a third tooth slot on the second joint seat 121 on the other side and disengaged from a third tooth slot on the third joint seat 132.

The child stroller further includes a third unlocking mechanism that, when operated, unlocks the revolute joint, thereby folding the child stroller.

The third unlocking mechanism includes an unlocking handle 84, a rotator 85, and a traction cable. The unlocking handle 84 is slidably provided on the push rod 13 in the longitudinal extending direction of the push rod 13. The rotating member 85 is sleeved on the second shaft 14, and is rotatably provided in the third rotary joint 131 around the second shaft 14. One end of the traction cable is provided on the unlocking handle 84, and the other end of the traction cable is provided on the rotator 85. The rotation member 85 is engaged with the fourth locking member 82 and the fifth locking member 83, respectively, and the fourth locking member 82 is engaged with the third locking member 81, as shown in fig. 14 to 17.

In this embodiment, the rotating member 85 is located between the fourth locking member 82 and the fifth locking member 83, the left and right sides of the rotating member 85 are respectively provided with a protruding rib 851, and each protruding rib 851 is provided with a third inclined surface 851a, as shown in fig. 20.

The fourth locking member 82 is provided with a first recess 821, and one side of the first recess 821 is provided with a fourth inclined surface 821a adapted to the third inclined surface 851a, as shown in fig. 18.

The fifth locking member 83 is provided with a second recess 831, and one side of the second recess 831 is provided with a fifth inclined surface 731 adapted to the third inclined surface 851a, as shown in fig. 19.

When the rotary joint is in the locked state, the ribs 851 on the left and right sides of the rotary member 85 are respectively inserted into the first concave portion 821 and the second concave portion 831, and the third inclined surface 851a on one side is in abutting engagement with the fourth inclined surface 821a, and the third inclined surface 851a on the other side is in abutting engagement with the fifth inclined surface 831 a.

The fourth locking piece 82 is provided with a convex portion 822 protruding toward the third locking piece 81, and the convex portion 822 abuts against one end surface of the third locking piece 81 provided toward the fourth locking piece 82, as shown in fig. 15, 17, and 18.

When the revolute joint operates the unlocking knob 84 in the locked state to slide upward relative to the push rod 13, the rotator 85 is pulled by the traction cable to rotate about the second shaft 14. When the rotating member 85 rotates, the fourth locking member 82 and the fifth locking member 83 are driven to slide back to back along the axial direction of the second shaft 14 by the abutting engagement of the third inclined surface 851a and the fourth inclined surface 821a and the abutting engagement of the third inclined surface 851a and the fifth inclined surface 831a until the second locking tooth is disengaged from the second tooth groove on the third joint seat 132, and the third locking tooth is disengaged from the third tooth groove on the third joint seat 132. When the fourth locking member 82 slides along the axial direction of the second shaft 14, the third locking member 81 slides synchronously in the same direction due to the abutting action of the protruding portion 822 until the first locking teeth are disengaged from the first tooth grooves on the first joint seat 113, and the rotary joint is unlocked.

When the child stroller is in the unfolded state, the rotational joint is in the locked state, the child stroller can be in the first use state or the second use state, and the child stroller can be freely switched between the first use state and the second use state, as shown in fig. 1-6.

When the stroller is folded from the unfolded state, the stroller is converted to the first use state and the second seat assembly 3 is detached from the second mount 52, as shown in fig. 21 and 22. The second mounting seat 52 is rotated relative to the sliding member 51 until the mounting surface of the second mounting seat 52 is approximately parallel to the push rod 13, the third unlocking mechanism is operated to unlock the rotary joint, the push rod 13 is rotated downwards to be close to the rear bracket 12, the front bracket 11 is rotated backwards to be close to the rear bracket 12, and the folding process is shown in fig. 23 and 24. Until the front frame 11, rear frame 12 and push rod 13 are brought together tightly, the final fold is shown in fig. 25 and 26. The folded baby stroller has compact structure, small volume and convenient carrying and storage.

The folding process is described without the second seat assembly 3, but the stroller can also be folded with the second seat assembly 3, and the second seat assembly 3 is folded first when folded.

Example 2

As shown in fig. 27 and 28, in this embodiment, the base 41 is fixedly disposed in the U-shaped structure of the strut 112, and the first mount 42 is fixedly disposed above the base 41, so that the first locking mechanism and the first unlocking mechanism do not need to be provided.

The first coupling assembly further includes a housing 44, the housing 44 being rotatably coupled to the base 41.

When the stroller is in the first use condition, the cover 44 is shielded over the first mount 42. In this embodiment, a housing cavity is formed between the casing 44 and the base 41, and the first mounting seat 42 is located in the housing cavity, as shown in fig. 27. At this time, the cover 44 may be used as a foot pedal for the child to step on.

When the stroller is in the second use state, the cover 44 rotates away from the base 41 above the first mounting seat 42, so that the first mounting seat 42 is completely leaked above the base 41, as shown in fig. 28.

The housing 44 may be of unitary construction. The cover 44 is rotatably connected to the front of the base 41 such that the cover 44 rotates forwardly relative to the base 41 when the stroller is transitioned from the first to the second use condition. The cover 44 may also be rotatably coupled to the rear of the base 41 to allow the cover 44 to rotate rearward relative to the base 41 when the stroller is transitioned from the first use configuration to the second use configuration. Of course, the cover 44 may be rotatably connected to the left or right side of the base 41.

The cover 44 may be a split structure, for example, the cover 44 is divided into two parts, both parts of the cover 44 are rotatably connected to the base 41, and when the stroller is converted from the first use state to the second use state, the two parts of the cover 44 are respectively rotated in opposite directions relative to the base 41.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (17)

1. A child stroller, characterized in that: including shallow frame, first seat subassembly, second seat subassembly, be used for the grafting first coupling assembling of first seat subassembly and be used for the grafting second coupling assembling of second seat subassembly, first coupling assembling is including setting up the base of the lower part of shallow frame and setting up base one side is used for installing first seat subassembly's first mount pad, first seat subassembly with first mount pad detachably connects, second coupling assembling sets up the upper portion of shallow frame, the child shallow has first service condition and second service condition, works as the child shallow is in first service condition, the top of first mount pad is sheltered from, first seat subassembly with first mount pad disconnection, works as the child shallow is in second service condition, first mount pad naked the top of base, first seat subassembly with first mount pad is connected.

2. The stroller of claim 1, wherein: the first connecting component can be arranged on the lower portion of the trolley frame in an adjustable direction, when the stroller is in a first use state, the first mounting seat is positioned below the base, and when the stroller is in a second use state, the first mounting seat is positioned above the base.

3. The stroller of claim 2, wherein: the base is rotatably connected with the lower part of the trolley frame through a first shaft, and the first shaft extends along the left-right or front-back direction.

4. The stroller of claim 2, wherein: the base is detachably connected with the lower part of the trolley frame.

5. A stroller according to claim 3 or 4, wherein: the child stroller further comprises a first locking mechanism for locking the relative positions of the base and the stroller frame, the first locking mechanism comprises a first locking piece which is slidably arranged on one of the base and the stroller frame and a first locking groove which is arranged on the other and matched with the first locking piece, when the first locking mechanism is in a locking state, the first locking piece is inserted into the first locking groove, and when the first locking mechanism is in an unlocking state, the first locking piece is separated from the first locking groove.

6. The stroller of claim 5, wherein: the child stroller further comprises a first unlocking mechanism for driving the first locking mechanism to unlock, the first unlocking mechanism comprises a first unlocking piece which can be arranged on a part of the first locking piece in the base and the stroller frame in a sliding mode, a first inclined surface is arranged on the first unlocking piece, a second inclined surface matched with the first inclined surface is arranged on the first locking piece, and the first inclined surface and the second inclined surface are in propping fit.

7. The stroller of claim 1, wherein: the base is fixedly arranged at the lower part of the trolley frame, the first mounting seat is fixedly arranged above the base, the first connecting component further comprises a housing rotationally connected with the base, when the trolley is in a first use state, the housing is shielded above the first mounting seat, and when the trolley is in a second use state, the housing is far away from the upper part of the first mounting seat.

8. The stroller of claim 1, wherein: the second connecting component can be arranged on the upper portion of the trolley frame in a vertical sliding mode, when the trolley is in a first use state, the second connecting component is located at a first height position on the trolley frame, when the trolley is in a second use state, the second connecting component is located at a second height position on the trolley frame, and the first height is smaller than the second height.

9. The stroller of claim 8, wherein: the child stroller further comprises a second locking mechanism for locking the relative positions of the second connecting assembly and the stroller frame, the second locking mechanism comprises a second locking piece which can be arranged on one of the second connecting assembly and the stroller frame in a sliding mode and a second locking groove which is arranged on the other of the second connecting assembly and the stroller frame and matched with the second locking piece, when the second locking mechanism is in a locking state, the second locking piece is inserted into the second locking groove, when the second locking mechanism is in an unlocking state, the second locking piece is separated from the second locking groove, the child stroller further comprises a second unlocking mechanism for driving the second locking mechanism to unlock, the second unlocking mechanism comprises a second unlocking piece which can be arranged on a part of the second connecting assembly and the stroller frame in a rotating mode, and the second locking piece is connected to one end portion of the second unlocking piece in a rotating mode.

10. The stroller of claim 8, wherein: the second connecting assembly comprises a sliding piece and a second mounting seat, the sliding piece can be arranged on the upper portion of the trolley frame in a vertical sliding mode, the second mounting seat is used for mounting the second seat assembly, and the second mounting seat is rotationally connected with the sliding piece.

11. The stroller of claim 1 or 8, wherein: the second connecting assembly comprises a second mounting seat for mounting the second seat assembly, and the second seat assembly is rotatably connected with the second mounting seat or detachably connected with the second mounting seat.

12. The stroller of claim 1, wherein: the trolley frame comprises a front support, a rear support and a push rod, wherein the upper part of the front support, the upper part of the rear support and the lower part of the push rod are coaxially connected in a rotating mode, the first connecting component is arranged at the lower part of the front support, and the second connecting component can be arranged on the push rod in a sliding mode along the length extending direction of the push rod.

13. The stroller of claim 12, wherein: the front support comprises a main rod and support rods which extend forwards from the lower part of the main rod to the left side and the right side respectively, the upper part of the main rod, the upper part of the rear support and the lower part of the push rod are coaxially connected in a rotating mode, and the first connecting assembly is arranged between the left side and the right side of the support rods.

14. The stroller of claim 12, wherein: the rear support is respectively arranged at the left side and the right side of the front support and the push rod, the upper parts of the front support, the upper parts of the rear support at the two sides and the lower part of the push rod are coaxially and rotatably connected through a rotating joint, the rotating joint comprises a first joint seat arranged at the upper part of the front support, a second joint seat arranged at the upper part of the rear support and a third joint seat arranged at the lower part of the push rod, and the second joint seat, the first joint seat, the third joint seat and the second joint seat at one side are sequentially arranged and coaxially and rotatably connected through a second shaft;

The revolute joint further comprises a third locking member for locking the relative position between the second and first joint seats on one side, a fourth locking member for locking the relative position between the first and third joint seats, and a fifth locking member for locking the relative position between the second and third joint seats on the other side;

The rotating joint is provided with a locking state and an unlocking state, when the rotating joint is in the locking state, the third locking piece is respectively matched with the second joint seat and the first joint seat on one side, the fourth locking piece is respectively matched with the first joint seat and the third joint seat, and the fifth locking piece is respectively matched with the second joint seat and the third joint seat on the other side;

When the rotary joint is in an unlocking state, one of the second joint seat and the first joint seat on one side is matched with the third locking piece, and the other is disengaged from the third locking piece; one of the first joint seat and the third joint seat is matched with the fourth locking piece, and the other is disengaged from the fourth locking piece; one of the second joint seat and the third joint seat on the other side is matched with the fifth locking piece, and the other is disengaged from the fifth locking piece.

15. The stroller of claim 14, wherein: the child stroller further comprises a third unlocking mechanism for driving the rotary joint to unlock from a locking state, wherein the third unlocking mechanism comprises an unlocking handle arranged on the push rod in a sliding manner, a rotary piece arranged in the third joint seat in a rotatable manner, and a traction rope with one end arranged on the unlocking handle, the other end of the traction rope is arranged on the rotary piece, the rotary piece is respectively matched with the fourth locking piece and the fifth locking piece, and the fourth locking piece is matched with the third locking piece.

16. The stroller of claim 15, wherein: the rotating piece is located between the fourth locking piece and the fifth locking piece, third inclined planes are respectively arranged on the left side and the right side of the rotating piece, fourth inclined planes matched with the third inclined planes are arranged on the fourth locking piece, fifth inclined planes matched with the third inclined planes are arranged on the fifth locking piece, and the fourth inclined planes and the fifth inclined planes are respectively abutted to the third inclined planes on the corresponding sides to be matched.

17. The stroller of claim 15, wherein: the fourth locking piece is provided with a convex part protruding towards the direction of the third locking piece, and the convex part is propped against one end face of the third locking piece, which faces the fourth locking piece.