CN116552617A - Child cart - Google Patents

Abstract

A stroller comprising: a first stand and a second stand, the first stand including a first side section and the second stand including a second side section; the pushing hand frame comprises a third side section which is pivoted with the first side section and the second side section respectively, wherein the third side section is pivoted with the first side section through a joint; a seat assembly coupled to the first side segment; and a connecting assembly including a support bar, a sliding member and a frame linkage part, wherein the support bar is pivoted to the first side section and the second side section, the sliding member is coupled to the seat assembly and slidingly connected to the support bar, and the frame linkage part is pivoted to the sliding member, so that the sliding member slides along the support bar when the stroller is folded and unfolded.

Description

Child cart

Technical Field

The present invention relates to a child stroller.

Background

Caregivers often rely on child carts to transport infants and children. Child strollers are typically constructed of a metal frame that includes an assembly of metal and plastic parts and a fabric that connects or encases the metal frame. When not in use, the stroller can be folded for convenient storage or transport. The child cart on the market can have a plurality of frame types, so that the child cart can be folded and unfolded. For caregivers, the child cart can be folded and unfolded smoothly and conveniently, and is one of important requirements.

Disclosure of Invention

The invention provides a child cart which can be smoothly and conveniently folded and unfolded.

According to one embodiment, a stroller comprises: a first stand and a second stand, the first stand including a first side section and the second stand including a second side section; the pushing hand frame comprises a third side section which is pivoted with the first side section and the second side section respectively, wherein the third side section is pivoted with the first side section through a joint; a seat assembly coupled to the first side segment; and a connecting assembly including a support bar, a sliding member and a frame linkage part, wherein the support bar is pivoted to the first side section and the second side section, the sliding member is coupled to the seat assembly and slidingly connected to the support bar, and the frame linkage part is pivoted to the sliding member, so that the sliding member slides along the support bar when the stroller is folded and unfolded.

Drawings

Fig. 1 is a perspective view of a stroller according to an embodiment of the present invention.

Fig. 2 shows a perspective view of the stroller of fig. 1 from a different perspective.

Fig. 3 shows a side view of the stroller.

Fig. 4 shows a top view of the stroller.

Fig. 5 shows a bottom view of the stroller.

Fig. 6 shows a cross-sectional view of the connection of the backrest frame and the slider in the stroller.

Fig. 7 shows a perspective view of a part of the constructional detail of the slider in the stroller.

Fig. 8 is a perspective view showing a part of structural details in the pivot portion of the backrest frame in the child stroller.

Fig. 9 is a perspective view showing a part of structural details of the back and frame locking mechanisms in the stroller.

Fig. 10 shows a side view of the stroller during folding.

Fig. 11 is a perspective view showing the child stroller in a fully folded state.

FIG. 12 is a schematic view showing the buckling of the buckling member and the sliding member in the stroller when the stroller is fully folded.

Fig. 13 is a side view of a stroller according to another embodiment of the present invention.

FIG. 14 is a schematic view of the stroller of FIG. 13 without a seat cloth.

Fig. 15 is a schematic view showing a part of structural details of a seat cloth employed in the stroller of fig. 13.

Detailed Description

Fig. 1 and 2 are perspective views of a stroller 100 according to an embodiment of the invention, fig. 3 is a side view of the stroller 100, fig. 4 is a top view of the stroller 100, and fig. 5 is a bottom view of the stroller 100. Referring to fig. 1-5, a stroller 100 has a frame 101 that may include two legs 102 and 104, a push handle 106, a seat assembly 108, and two link assemblies 110.

The foot rest 102 is, for example, a front foot rest, and may be composed of tube sections. The foot rest 102 may include two side sections 102A disposed on the left and right sides of the stroller 100, respectively, and a transverse portion 102B connected to the two side sections 102A. A plurality of wheel sets 112A may be provided at a lower portion of the foot rest 102.

The stand 104 is, for example, a rear stand and may be comprised of tube sections. The foot rest 104 may include two side sections 104A disposed on the left and right sides of the stroller 100, respectively, and a transverse portion 104B connected to the two side sections 104A. A plurality of wheel sets 112B may be provided at the lower portion of the foot rest 104.

The pusher arm 106 may also be comprised of tube segments. The push frame 106 may include two side sections 106A disposed on the left and right sides of the stroller 100, respectively, and a transverse section 106B connected to the two side sections 106A.

The left and right sides of the stroller 100 are respectively connected to the two legs 102, 104 and the push frame 106 using identical and symmetrical assembly structures. According to an embodiment, the foot stand 102 and the hand pushing frame 106 are pivoted on the left and right sides by the joints 114, respectively, so that the hand pushing frame 106 can pivot relative to the foot stand 102. For example, the joint 114 may include two joints 114A, 114B, the joint 114A being fixedly coupled to the side segment 102A of the tripod 102 at an upper end thereof, the joint 114B being fixedly coupled to the side segment 106A of the pusher arm 106 at a lower end thereof, and the two joints 114A, 114B being pivotally coupled such that the side segment 106A of the pusher arm 106 is pivotally coupled to the side segment 102A of the tripod 102 via the joint 114. In addition, the foot stand 104 is pivotally connected to the pushing frame 106, so that the pushing frame 106 can pivot relative to the foot stand 104. For example, the side section 104A of the foot rest 104 may be pivotally connected at its upper end to the side section 106A of the pusher arm 106 via a joint 116. The joints 114, 116 pivotally connecting the push frame 106 to the legs 102, 104, respectively, may be spaced apart. The joints 116 may be higher than the joints 114 when the stroller 100 is in the deployed state.

Referring to fig. 1-5, the seat assembly 108 may be coupled to the side segment 102A of the foot rest 102, two link assemblies 110. According to one embodiment, the seat assembly 108 may include two seat portions 118, 120 and a back rest 122. The seat portions 118, 120 may provide seating support for the child. The seat portions 118, 120 include, for example, but are not limited to, a rigid seat plate. The back rest 122 is pivotally connected to the seat portion 120 by an axis X and provides back support for the child. According to one embodiment, the back rest 122 may include two side sections 122A disposed on the left and right sides of the seat assembly 108, respectively, and a transverse portion 122B connected to the two side sections 122A. The back rest 122 includes, for example, but is not limited to, a combination of pipe sections. According to an embodiment, the seat portion 120 may be pivotally connected to the side section 122A of the backrest frame 122 via a shaft 124, wherein the side section 122A may be fixedly connected to a pivot portion 126, and the shaft 124 may be connected to the seat portion 120 and extend transversely along the axis X through the pivot portion 126, such that the backrest frame 122 and the pivot portion 126 may pivot about the shaft 124. Thus, the back rest 122 may pivot about the axis X relative to the seat portions 118, 120 to adjust the angle of inclination of the back rest 122 to provide proper back support.

The two seat portions 118, 120 are pivotally connected, the seat portion 118 is pivotally connected to the side section 102A of the foot rest 102, and the seat portion 120 is coupled to the two link assemblies 110. According to one embodiment, the seat portion 118 may be pivotally coupled to the seat portion 120 via a joint 128 such that the seat portion 118 may pivot relative to the seat portion 120. The joint 128 may be comprised of any suitable structure, for example, the joint 128 may include a shaft that allows the seat portions 118, 120 to pivot about the shaft via a pivot provided in the seat portions 118, 120. The seat portion 118 is pivotally connected to the side section 102A of the foot rest 102 at one end thereof opposite the joint 128 via a joint 130, such that the seat portion 118 is pivotable relative to the foot rest 102. The joint 130 may be formed of any suitable structure, such as by pivotally connecting the seat portion 118 to the side segment 102A of the foot rest 102 via a shaft. The seat portion 120 may be pivotally connected to the two link assemblies 110 on the left and right sides at one end opposite to the joint 128, so that the seat portion 120 may pivot relative to the two link assemblies 110. The connection assembly 110 is configured to enable the seat portions 118 and 120 to be interlocked when the stroller 100 is folded and unfolded, and enable the seat portions 118 and 120 to be folded and unfolded relatively, wherein the seat portions 118 and 120 are folded at an included angle when in a folded state, and extend along a substantially same plane when in an unfolded state. The side section 102A of the foot rest 102 may also be provided with a leg support 192 adjacent to the connection with the seat portion 118, the leg support 192 extending laterally from side to connect with the side section 102A and being tiltable forwardly and downwardly to be able to support the legs of a child.

Referring to fig. 1-5, two connecting members 110 are disposed on the left and right sides of the stroller 100, and the structure and the assembly of the connecting members 110 are described below by one side, and the connecting members 110 on the other side may be identical. The link assembly 110 may include a support bar 132, a slider 134, and a frame linkage 136. The support bar 132 is pivotally connected to the side sections 102A, 104A of the foot rest 102, 104, respectively, such that the support bar 132 pivots relative to the foot rest 102, 104, respectively. The slider 134 is coupled to the seat assembly 108 and is in sliding engagement with the support bar 132. For example, the slider 134 may be pivotally coupled to the seat portion 120 of the seat assembly 108 and slidably coupled to the support bar 132 such that the seat portion 120 may pivot relative to the slider 134. The sliding member 134 can slide along the supporting rod 132 between two pivoting points 138 and 140, wherein the supporting rod 132 is pivoted to the side section 102A of the stand 102 at the pivoting point 138 and is pivoted to the side section 104A of the stand 104 at the pivoting point 140. The pivot 138 of the side section 102A of the foot rest 102 and the support bar 132 may be located between the two joints 114, 130, and the side section 102A of the foot rest 102, the side section 104A of the foot rest 104, the side section 106A of the push handle 106, and the support bar 132 may form a four-bar linkage.

According to one embodiment, the stroller 100 can further include a front guard 142 that can be fixedly coupled to the support bar 132. When a child is seated in the stroller 100, the front guard 142 may extend forwardly above the seat portion 118 beyond the foot rest 102 and around the front of the child to provide a restraining, armrest function.

Referring to fig. 1-5, the frame linkage 136 is pivotally connected to the slider 134, so that the slider 134 slides along the support rod 132 when the stroller 100 is folded and unfolded. The frame linkage 136 may be coupled to a suitable position of the frame 101, such that the sliding of the sliding member 134 along the support bar 132 toward the pivot 138 may be linked with the folding of the frame 101 by the frame linkage 136, and the sliding of the sliding member 134 along the support bar 132 toward the pivot 140 may be linked with the unfolding of the frame 101 by the frame linkage 136. Suitable locations for coupling the frame linkage 136 to the frame 101 may include the joint 114, adjacent the joint 114 on the side segment 102A of the foot rest 102, adjacent the joint 114 on the side segment 106A of the push handle 106, and the like.

According to an embodiment, the frame linking portion 136 is pivotally connected to the joint 114 and the sliding member 134, respectively. For example, the side section 102A of the foot stool 102, the side section 106A of the push handle 106, and one end of the frame linkage 136 are coaxially pivoted to the joint 114, so that the side sections 102A, 106A and the frame linkage 136 can pivot relatively around the same axis. According to an embodiment, the frame linkage 136 may be a single link, a first end of the link is pivotally connected to the joint 114, and a second end of the link is pivotally connected to the slider 134. Thus, the sliding member 134 can slide toward the pivot joint between the support rod 132 and the side section 102A of the foot stool 102 during the folding process of the stroller 100, and the sliding member 134 can slide toward the pivot joint between the support rod 132 and the side section 104A of the foot stool 104 during the unfolding process of the stroller 100.

The seat portion 120 may be pivotally connected to the back frame 122 and the slider 134 by the same or different pivot axes, respectively, wherein the seat portion 120 may be pivotally connected to the back frame 122 and the slider 134 via one or more shafts, such that the seat portion 120 may pivot with respect to the slider 134 and the back frame 122, respectively. According to one embodiment, seat assembly 108 is pivotally coupled to slide 134 by axis X, allowing seat assembly 108 to pivot about axis X relative to slide 134. For example, the seat portion 120, the back rest 122, and the slider 134 may be pivotally connected to one another by the same axis X to facilitate providing a compact and easy to operate structure. The following description will further illustrate embodiments in which the seat portion 120, the back rest 122, and the slider 134 are pivotally connected to one another by the same axis X.

Fig. 6 is a cross-sectional view of the connection between the backrest frame 122 and the slider 134, fig. 7 is a perspective view of a part of the structural details of the slider 134, and fig. 8 is a perspective view of a part of the structural details of the backrest frame 122 in the pivot portion 126. Referring to fig. 1-8, the sliding member 134 may have a sliding portion 134A and a pivoting portion 134B. According to an embodiment, the slider 134 including the sliding contact portion 134A and the pivoting portion 134B may be integrally formed as a single body. The sliding portion 134A may slidably contact the support bar 132, so that the slider 134 may slide along the support bar 132. According to an embodiment, the sliding portion 134A may be annular, through which the supporting rod 132 is provided, so that the supporting rod 132 may slide with the sliding member 134 via the sliding portion 134A. However, the pivotal connection between the support rod 132 and the slider 134 is not limited to the above example, for example, other embodiments may provide a guide rail along the support rod 132 and the sliding portion 134A of the slider 134 is configured to slide on the guide rail, so that the slider 134 can also slide on the support rod 132 through the sliding portion 134A.

The pivot portion 126 of the back frame 122 on the side section 122A thereof can pivot with the pivot portion 134B of the slider 134, so that the back frame 122 can pivot about the axis X relative to the slider 134. In addition, the shaft 124 may extend through the pivot portion 126 and be connected to the pivot portion 134B of the slider 134, and the seat portion 120 of the seat assembly 108 may pivot about the shaft 124, such that the seat portion 120 is also pivoted to the slider 134 along the axis X. Thus, the seat portion 120 is pivotable about the axis X relative to the slider 134, the back rest 122, wherein the seat portion 120 is rotatable about the shaft 124. With the above-described assembly structure, the backrest frame 122 can pivot about the shaft 124 relative to the seat portion 120 and the slider 134, and the seat portion 120 can also pivot about the shaft 124 relative to the backrest frame 122 and the slider 134.

Referring to fig. 1, 2, 4, and 6-8, the stroller 100 further includes a back locking mechanism 144 for locking the back frame 122 to the slider 134 to prevent the back frame 122 from pivoting relative to the slider 134. The back lock mechanism 144 may include a lock 146, a spring 148, and an unlock actuator 150. The locking member 146 is slidably connected to the shaft 124, so that the locking member 146 can slide along the shaft 124 between a locking position and a releasing position, wherein the locking member 146 is engaged with the pivot portion 126 of the back frame 122 and the pivot portion 134B of the sliding member 134 when in the locking position to prevent the back frame 122 from pivoting relative to the sliding member 134, and is disengaged from one of the pivot portions 126 and 134B to allow the back frame 122 to pivot relative to the sliding member 134 when in the releasing position. The locking piece 146 can be engaged with the pivot portion 126 of the back rest 122 and the pivot portion 134B of the sliding piece 134 by the protruding teeth around the locking piece when in the locking position, so as to prevent the pivot portions 126 and 134B from pivoting relatively. To facilitate sliding engagement of the locking member 146 with the shaft 124, the locking member 146 is provided with a through hole 146A, for example, and the shaft 124 can be disposed through the through hole 146A, so that the locking member 146 can slide along the axis X relative to the pivot portion 126 of the back frame 122 and the pivot portion 134B of the slider 134.

The elastic member 148 is connected to the locking member 146, and the elastic force generated by the elastic member 148 can urge the locking member 146 to slide toward the locking position. The elastic member 148 is, for example, a spring. According to an embodiment, the locking member 146 is disengaged from the pivot portion 126 of the backrest frame 122 when in the unlocked position, and the elastic member 148 is connected to the sliding member 134 and the locking member 146, respectively.

The unlocking actuator 150 is coupled to the locking member 146 and is operable to urge the locking member 146 to slide toward the unlocked position. According to an embodiment, the unlocking actuator 150 may include an actuating portion 152 and an operating portion 154. The actuating portion 152 may be disposed in the pivot portion 126 of the back frame 122 and slidably contact the locking member 146. The operation portion 154 is fixedly connected to the actuation portion 152, extends out of the pivot portion 126 of the backrest frame 122, and is slidably connected to the side portion 122A of the backrest frame 122 via the pivot portion 126. According to one embodiment, the unlocking actuator 150 is substantially radial with respect to the shaft 124 in the sliding direction of the backrest frame 122, and the actuating portion 152 is in sliding contact with the inclined surface 146B provided on the locking member 146. The unlocking actuating member 150 is operated to push the locking member 146 to slide, so that the locking member 146 can overcome the elastic force of the elastic member 148 to slide from the locking position to the unlocking position.

According to an embodiment, the left and right sides of the seat assembly 108 may be provided with the locking members 146 and the elastic members 148 as described above, and the operation portion 154 of the unlocking actuator 150 may be provided with the actuation portion 152 as described above on the left and right sides, so that the locking members 146 on the left and right sides may be driven to synchronously unlock when the unlocking actuator 150 is operated.

Referring to fig. 1, 6-8, the stroller 100 further includes a frame locking mechanism 156 having a locked state and an unlocked state, wherein the frame locking mechanism 156 locks the slider 134 to the support bar 132 when in the locked state and the frame locking mechanism 156 allows the slider 134 to slide along the support bar 132 when in the unlocked state. The carriage locking mechanism 156 may include a latch 158 that is movable to lock or unlock the slider 134 to the support bar 132. According to one embodiment, the latch 158 is at least partially received in the slider 134 and is movable relative to the slider 134 to engage with or disengage from the support bar 132. The latch 158 engages the support bar 132 in the locked state to prevent the slider 134 from sliding relative to the support bar 132, thereby locking the stroller 100 in the deployed state. The latch 158 is disengaged from the support bar 132 in the unlocked state, so that the slider 134 can slide along the support bar 132 to fold and unfold the stroller 100.

According to one embodiment, the latch 158 is slidable relative to the slider 134 to engage and disengage the support bar 132. More specifically, the shaft 124 may have a hollow interior, and the latch 158 may slide along the hollow interior of the shaft 124 in the slider 134. For example, the latch 158 may slidably engage the shaft 124 such that the latch 158 may slide along the axis X relative to the shaft 124 and the slider 134 to engage and disengage the support bar 132.

Referring to fig. 1, 6-8, the frame locking mechanism 156 may further include a latch actuator 160 and a resilient member 162. The latch actuator 160 is coupled to the latch 158 and is operable to urge the latch 158 relative to the slider 134 out of engagement with the support bar 132. According to one embodiment, the latch actuating member 160 and the latch member 158 can be synchronously moved to urge the latch member 158 to engage with and disengage from the support bar 132. Thus, the caregivers can cause the frame locking mechanism 156 to be switched to the unlocked state by operating the latch actuator 160, and can cause the frame locking mechanism 156 to be switched to the locked state by operating the latch actuator 160.

Referring to fig. 1, 6-8, the latch actuator 160 may include a shaft 124 and a handle 164. The handle 164 is fixedly coupled to the shaft 124 and may extend generally radially from the shaft 124 so that a caregiver can grasp the handle 164 and operate the latch actuator 160 with his or her hand. The shaft 124 is pivotally connected to the pivot portion 134B of the slider 134, so that the shaft 124 can pivot with respect to the slider 134. The latch actuator 160 is thereby pivotally coupled to the slider 134 via the axis X, allowing the latch actuator 160 to pivot about the axis X relative to the slider 134.

The latch 158 is slidably engaged with the latch actuator 160 and is pivotable about the axis X in synchronization with the latch actuator 160. For example, the latch actuator 160 may have a guide slot 166 on the shaft 124, the latch 158 may have a post 168 thereon, and the post 168 may slide through the guide slot 166. By virtue of the sliding engagement of the guide groove 166 and the boss 168, the latch 158 and the latch actuator 160 can pivot synchronously about the axis X, and the latch 158 can slide along the axis X relative to the latch actuator 160. In addition, the latch member 158 may also be in sliding contact with an action surface 170 (as shown in fig. 7) provided in the slider 134, wherein at least one of the latch member 158 and the action surface 170 is provided with a bevel, so that the latch actuator 160 can pivot around the axis X to simultaneously pivot and slide along the axis X. According to one embodiment, the active surface 170 may be provided as a beveled surface. The acting surface 170 may be disposed in the pivot portion 134B of the slider 134 and located at the periphery of the shaft 124, and the latch 158 is in sliding contact with the acting surface 170, for example, at the boss 168. According to another embodiment, the inclined surface may be disposed on the latch member 158, and the acting surface 170 may be provided as a protrusion in sliding contact with the inclined surface, so that the latch actuating member 160 can pivot around the axis X and also drive the latch member 158 to pivot synchronously and slide along the axis X. Accordingly, the latch actuator 160 is operable to urge the latch 158 to slide relative to the shaft 124 and the slider 134 to engage or disengage the latch 158 from the support bar 132.

Referring to fig. 6, a resilient member 162 may be disposed in the shaft 124 and coupled to the latch member 158. The elastic member 162 is, for example, a spring, and both ends thereof may be connected to the shaft 124 and the latch member 158, respectively. The spring force generated by the spring member 162 is adapted to maintain the latch member 158 in sliding contact with the active surface 170.

Referring to fig. 6, the shaft 124 may further include an abutment 172 that may be in sliding contact with the locking member 146 of the backrest locking mechanism 144. The abutment 172 is fixed to the shaft 124 and can pivot synchronously about the axis X. As shown in fig. 9, the abutment 172 and the locking member 146 can slide and contact each other via the inclined surface 174, so that the shaft 124 and the abutment 172 can pivot synchronously about the axis X to push the locking member 146 to slide toward the unlocking position. Therefore, when the caregivers rotate the latch actuator 160 to switch the frame locking mechanism 156 to the unlocking state, the abutment 172 simultaneously causes the locking member 146 to slide toward the unlocking position, so as to unlock the backrest locking mechanism 144, thereby allowing the backrest 122 to pivot about the axis X to reduce the volume of the stroller 100, which is quite convenient to operate, and does not require an additional operation step for the unlocking actuator 150 of the backrest locking mechanism 144.

According to an embodiment, the left and right sides of the seat assembly 108 may be provided with the latch members 158, the elastic members 162 and the abutting portions 172 as described above, so that the latch actuating members 160 can be operated to cause the latch members 158 on the left and right sides to move synchronously to engage with or disengage from the corresponding support rods 132, and can cause the locking members 146 on the left and right sides to release the lock synchronously.

Referring to fig. 4 and 6, the stroller 100 can further include a safety lock mechanism 176 for preventing the latch 158 from being accidentally released. The safety lock mechanism 176 may include a blocking member 178, a resilient member 180, and an unlocking member 182. The blocking member 178 extends inside the handle 164 and is movable inside the shaft 124 to engage with the latch member 158, wherein the latch member 158 has, for example, an extension 158A located inside the shaft 124, and the blocking member 178 is engageable with the extension 158A of the latch member 158, so as to prevent the latch member 158 from being switched from the locked state to the unlocked state. According to one embodiment, the stop 178 may be slidably engaged with the handle 164 such that the stop 178 may slide generally radially relative to the shaft 124. The elastic member 180 may be connected to the blocking member 178 and the handle 164, respectively, wherein the elastic member 180 is, for example, a spring. The elastic force of the elastic member 180 can cause the blocking member 178 to move to engage with the latch member 158. The unlocking member 182 is assembled with the handle 164 of the latch actuation member 160 and is coupled with the blocking member 178. According to one embodiment, the unlocking member 182 is, for example, a button that can extend and retract the handle 164. The unlocking member 182 is operable to urge the blocking member 178 to move out of engagement with the latching member 158, thereby allowing the latching member 158 to switch from the locked state to the unlocked state.

With reference to fig. 1-9, the following description will describe the folding operation of the stroller 100 with reference to fig. 10-11. When the stroller 100 is in the deployed state, the slide 134 is positioned adjacent to where the support bar 132 is pivotally connected to the side sections 104A of the foot rest 104, the seat portions 118, 120 extend along substantially the same plane, and the frame locking mechanism 156 is in a locked state to lock the stroller 100 in the deployed state. To collapse the stroller 100, the caregiver grasps the handle 164 of the latch actuator 160 with one hand and simultaneously presses the release member 182 to unlock the safety lock mechanism 176. The latch actuator 160 is then rotated upwardly to switch the frame locking mechanism 156 to the unlocked state, and the latch actuator 160 is then raised to slide the slider 134 along the support bar 132 away from where the support bar 132 is pivotally connected to the side section 104A of the foot rest 104, thereby folding the seat portions 118, 120 in half and folding the foot rest 102, 104 and the push handle 106 via the frame linkage 136, as shown in fig. 10.

As shown in fig. 10 and 11, when the stroller 100 is fully folded, the support bar 132 can be folded toward the side section 104A of the stand 104, and the sliding member 134 can be located adjacent to where the support bar 132 is pivotally connected to the side section 102A of the stand 102. According to an embodiment, a fastener 184 may be disposed on the side section 104A of the stand 104, and the fastener 184 may be fastened with the slider 134 when the stroller 100 is in the folded state, so as to assist the stroller 100 in maintaining the folded state. The fastener 184 is, for example, fixedly coupled to the side portion 104A of the stand 104 and is elastically deformable to engage or disengage the slider 134. With reference to fig. 11, fig. 12 is a schematic view of the fastening device 184 fastened to the slider 134. Referring to fig. 11 and 12, the fastener 184 can be fastened with the sliding portion 134A of the slider 134, for example, to keep the stroller 100 in the folded state. According to one embodiment, the fastener 184 may have a hook portion 184A and the slip joint portion 134A has a barb portion 186 thereon adapted to engage the hook portion 184A.

Fig. 13-15 illustrate another embodiment of a stroller 100 according to the present invention, which differs from the previous embodiments in that the seat assembly 108 does not have the seat portions 118, 120, and the rest of the structure and operation can be the same. Referring to fig. 13-15, the seat assembly 108 of the stroller 100 includes a seat cloth 190 (shown in phantom in fig. 13) and a back rest 122 connected thereto, and the seat cloth 190 is further coupled to the side segment 102A of the foot rest 102. Fig. 13 shows the seat fabric 190 in a broken line, fig. 14 shows a schematic view of the stroller 100 without the seat fabric 190, and fig. 15 shows a schematic view of a part of the seat fabric 190 in detail. The seat cloth 190 may comprise a soft material such as cloth, cushion, etc. According to one embodiment, the seat cloth 190 may be sleeved with the back rest 122 and the leg support 192, respectively. For example, two sleeving parts 190A and 190B are respectively provided at two ends of the seat cloth 190, the back rest frame 122 may be at least partially inserted into the sleeving part 190A to enable the seat cloth 190 to be sleeved on the back rest frame 122, and the leg support frame 192 may be at least partially inserted into the sleeving part 190B to enable the seat cloth 190 to be sleeved on the leg support frame 192. To facilitate secure connection of the seat 190, the seat 190 may be fixedly coupled to the shaft 124 and a cross bar 196 disposed in the foot rest 102, respectively. The cross bar 196 extends laterally, e.g., parallel to the axle 124, left and right, adjacent the leg support 192 and is fixedly secured to the two side sections 102A of the foot rest 102. The seat cloth 190 may be fixedly connected to the shaft 124 and the cross bar 196 by two fixing plates 198A and 198B, respectively, wherein the fixing plates 198A and 198B are made of soft material and extend below the seat cloth 190. The anchor tab 198A may be wrapped around the shaft 124 and connected to the seat cloth 190 at opposite ends of the anchor tab 198A, respectively, thereby limiting the position of the shaft 124 relative to the seat cloth 190. In a similar manner, the anchor tab 198B may wrap around the cross bar 196 and be connected to the seat cloth 190 at opposite ends of the anchor tab 198B, respectively, thereby limiting the position of the cross bar 196 relative to the seat cloth 190. According to one embodiment, the anchor sheets 198A, 198B may be connected to the seat cloth 190 in the same manner: one of the opposite ends of each anchor tab 198A, 198B may be permanently affixed (e.g., by stitching) to the seat cloth 190, and the other of the opposite ends of each anchor tab 198A, 198B may be removably affixed to the seat cloth 190 by a fastener 199 (e.g., snaps, buttons, etc.).

It should be noted that the seat cloth 190 may also be coupled to the foot rest 102 by a connection to one of the leg support 192 and the cross bar 196, and need not be connected to the leg support 192 and the cross bar 196, respectively. For example, to couple the seat cloth 190 with the foot rest 102, different embodiments of the invention may omit the leg support frame 192 and connect the seat cloth 190 with only the crossbar 196, or omit the crossbar 196 and connect the seat cloth 190 with only the leg support frame 192.

When the seat cloth 190 is installed, the seat cloth 190 may define a seat portion 194 that provides seating support for the child between the side sections 102A of the foot rest 102 and the back rest 122 (particularly between the cross bar 196 and the axle 124). An opening (not shown) may also be provided in the seat cloth 190 to allow the handle 164 to be manipulated through the opening. The seat assembly 108 of the embodiment shown in fig. 13-15 is coupled to the slider 134, and the slider 134 slides along the support bar 132 as described above to unfold and fold the seat portion 194 defined by the seat cloth 190, and the slider 134 slides along the support bar 132 to interlock with the folding and unfolding of the frame 101 via the frame interlocking portion 136.

In another embodiment, the stroller 100 according to the embodiment of fig. 1-12 may further include a seat fabric, and the seat fabric may have a sleeving portion 190A, 190B, and is sleeved on the backrest frame 122 and the leg support frame 192, respectively, similar to the seat fabric 190. Further, to facilitate secure attachment of the seat to the stroller 100, the seat may have a securing strap (not shown) that may be secured to the axle 124 and/or the foot rest 102 by a binding. Alternatively, the seat fabric may be fixedly connected to the stroller 100 by stitching, and the connection mode of the seat fabric and the stroller 100 is not limited in the embodiment of the present invention.

The child cart provided by the invention has a plurality of advantages, including a frame which can be smoothly folded and unfolded, and a carer can fold the child cart by using one hand, so that the operation is quite convenient.

Certain embodiments of a child stroller have been described above. These examples are only preferred embodiments of the present invention and, of course, should not be construed as limiting the scope of the invention, and therefore, equivalent changes to the claims of the present invention shall fall within the scope of the invention.

Claims (29)

1. A stroller, comprising:

a first stand and a second stand, the first stand including a first side section and the second stand including a second side section;

the pushing hand frame comprises a third side section which is pivoted with the first side section and the second side section respectively, wherein the third side section is pivoted with the first side section through a joint;

a seat assembly coupled to the first side segment; and

the connecting assembly comprises a supporting rod, a sliding piece and a frame linkage part, wherein the supporting rod is pivoted with the first side section and the second side section respectively, the sliding piece is coupled with the seat assembly and is in sliding connection with the supporting rod, and the frame linkage part is pivoted with the sliding piece, so that the sliding piece slides along the supporting rod when the child stroller is folded and unfolded.

2. The stroller of claim 1, wherein the slide slides toward the point where the support bar is pivotally connected to the first side section during folding of the stroller and slides toward the point where the support bar is pivotally connected to the second side section during unfolding of the stroller.

3. The stroller of claim 1, wherein the frame linkage is a single link.

4. The stroller of claim 1, wherein the frame linkage is pivotally connected to the slider and the joint, respectively.

5. The stroller of claim 4, wherein the first side segment, the third side segment, and the frame linkage are coaxially pivotally coupled to the joint.

6. The stroller of claim 1, further comprising a frame locking mechanism having a locked state and an unlocked state, wherein the frame locking mechanism locks the slider to the support bar in the locked state and wherein the frame locking mechanism allows the slider to slide along the support bar in the unlocked state.

7. The stroller of claim 6, wherein the frame locking mechanism comprises a latch member at least partially received in the slide member, the latch member being movable relative to the slide member to engage and disengage the support bar, wherein the latch member engages the support bar in the locked state and disengages the support bar in the unlocked state.

8. The stroller of claim 7, wherein said frame locking mechanism further comprises a latch actuator coupled to said latch member, said latch actuator being operable to urge said latch member relative to said slide member out of engagement with said support bar.

9. The stroller of claim 8, wherein the latch actuation member moves in unison with the latch member to urge the latch member into and out of engagement with the support bar.

10. The stroller of claim 7, wherein the seat assembly is pivotally connected to the slide by an axis about which the seat assembly can pivot relative to the slide, and the latch is slidable relative to the slide along the axis into and out of engagement with the support bar.

11. The stroller of claim 7, wherein the latch member is slidable relative to the slide member along an axis for engagement and disengagement with the support bar, and wherein the frame locking mechanism further comprises a latch actuator coupled to the latch member, the latch actuator being pivotable about the axis, wherein the latch actuator is operable to urge the latch member to slide relative to the slide member out of engagement with the support bar.

12. The stroller of claim 11, wherein said latch member is slidably engaged with said latch actuator and is pivotable in unison with said latch actuator about said axis, and wherein said latch member is in sliding contact with an active surface of said slide member such that pivoting of said latch actuator about said axis causes said latch member to slide along said axis.

13. The stroller of claim 12, wherein the frame locking mechanism further comprises a resilient member coupled to the latch member, the resilient member being adapted to exert a resilient force to maintain the latch member in sliding contact with the active surface.

14. The stroller of claim 11, wherein the latch actuator comprises a shaft and a handle fixedly attached, the latch being slidable along a hollow interior of the shaft.

15. The stroller of claim 14, wherein the seat assembly is pivotally connected about the shaft.

16. A stroller according to claim 14, further comprising a safety lock mechanism including an unlocking member and a blocking member connected, the unlocking member being assembled with the handle, the blocking member being engageable with the latching member by the shaft to prevent the latching member from being switched from the locked state to the unlocked state, and the unlocking member being operable to cause the blocking member to disengage from the latching member to allow the latching member to be switched from the locked state to the unlocked state.

17. The stroller of claim 14, wherein the seat assembly comprises a backrest frame and a seat cloth connected thereto, the seat cloth coupled to the first side segment, the seat cloth defining a seat portion therebetween.

18. The stroller of claim 1, wherein the seat assembly comprises a back frame and pivotally connected first and second seat portions, the first seat portion pivotally connected to the first side section, and the back frame, the second seat portion, and the slide are pivotally connected to one another by a common axis.

19. The stroller of claim 18, wherein the slide has a sliding connection portion and a first pivoting portion, the back frame is fixedly connected to a second pivoting portion, the support bar is slidably connected to the slide via the sliding connection portion, and the first pivoting portion is pivotally connected to the second pivoting portion to enable the back frame to pivot about the axis relative to the slide.

20. The stroller of claim 19, wherein the seat assembly is pivotally connected about a shaft extending along the axis and passing through the second pivot.

21. The stroller of claim 20, further comprising a frame locking mechanism that locks the slider to the support bar when in a locked state and allows the slider to slide along the support bar when in a unlocked state, wherein the frame locking mechanism includes a latch that is at least partially received in the slider and is slidable along the hollow interior of the shaft, the latch engaging the support bar when in a locked state and disengaging the support bar when in a unlocked state.

22. The stroller of claim 21, wherein the shaft is fixedly coupled to a handle to form a latch actuator coupled to the latch, the latch being slidable along the axis relative to the slider and the shaft to engage and disengage the support bar, and the latch actuator being pivotable about the axis, wherein the latch actuator is operable to urge the latch to slide relative to the slider, the shaft, and disengage the support bar.

23. A stroller according to claim 22, wherein the latch member is slidably engaged with the latch actuator and is pivotable in synchronism with the latch actuator about the axis, and wherein the latch member is in sliding contact with an active surface of the slider such that pivoting the latch actuator about the axis causes the latch member to slide along the axis.

24. The stroller of claim 23, wherein the frame locking mechanism further comprises a resilient member coupled to the latch member, the resilient member being adapted to exert a spring force to maintain the latch member in sliding contact with the active surface.

25. The stroller of any one of claims 20-24, further comprising a back locking mechanism for locking the back frame to the slide, wherein the back locking mechanism comprises a locking member slidably coupled to the shaft such that the locking member is slidable along the shaft between a locked position in which the locking member engages the first pivot and the second pivot to prevent the back frame from pivoting relative to the slide and a unlocked position in which the locking member disengages one of the first pivot and the second pivot to allow the back frame to pivot relative to the slide.

26. The stroller of claim 25, wherein the back locking mechanism further comprises a resilient member coupled to the locking member, the resilient member being adapted to urge the locking member to slide toward the locked position.

27. The stroller of claim 26, wherein the shaft has an abutment in sliding contact with the locking member, the shaft and the abutment being pivotable about the axis in unison to urge the locking member to slide toward the unlocked position.

28. The stroller of claim 26, wherein the back lock mechanism further comprises an unlocking actuator coupled to the lock, the unlocking actuator operable to urge the lock to slide toward the unlocked position.

29. The stroller of claim 1, wherein the second side segment is provided with a fastener that engages the slider when the stroller is in the collapsed position to assist in maintaining the stroller in the collapsed position.