TWI902253B - Folding system and child carrier - Google Patents

Abstract

The present application relates to a folding system for a child carrier, the child carrier at least including a handlebar and a front leg pivotably connected to each other; the folding system includes: a first locking mechanism at least connected to the handlebar and the front leg, the first locking mechanism being switchable between a locked state and an unlocked state; a first operation portion connected to the first locking mechanism and configured to switch the first locking mechanism from the locked state to the unlocked state, in the locked state, the first locking mechanism restricting relative pivoting of the handlebar and the front leg, and in the unlocked state, the first locking mechanism allowing the relative pivoting of the handlebar and the front leg; and a safety lock mechanism connected to the first locking mechanism, the safety lock mechanism being switchable between a secured state and a free state.

Description

Folding system and child vehicle

This invention relates to the field of children's products technology, and in particular to a folding system and a child vehicle.

Child vehicles, such as strollers, are typically equipped with a folding system to fold into a smaller form for easier transport and carrying. For ease of operation, the operating part of the folding system is usually designed with a relatively large operable section and located in a position easily accessible to the user; for example, the operating part may be a flexible pull cord mounted on the seat.

However, this also brings the risk of accidental folding of the child vehicle due to accidental activation of the control mechanism, posing a certain safety hazard to the user. For example, if a child is sitting in the child vehicle and accidentally activates the control mechanism, causing the vehicle to fold unexpectedly, the child may be trapped inside. In extreme cases, this could even cause injury to the child.

Therefore, it is necessary to provide a retraction system that can prevent accidental retraction due to accidental activation of the operating part, and a child vehicle having the retraction system, in response to the above-mentioned technical problems.

This invention provides a folding system for a child vehicle, the child vehicle including at least a rider and forelegs pivotally connected to each other. The folding system includes: a first locking mechanism connected at least to the rider and the forelegs, the first locking mechanism being switchable between a locked state and an unlocked state; and a first operating unit connected to the first locking mechanism and configured to switch the first locking mechanism from the locked state to the unlocked state, in which the first locking mechanism restricts relative pivoting of the rider and the forelegs. In the unlocked state, the first locking mechanism allows relative rotation of the rider and the forefoot; and a safety locking mechanism connected to the first locking mechanism, the safety locking mechanism being switchable between a secure state and a free state, wherein in the secure state, the safety locking mechanism prevents the first locking mechanism from switching to the unlocked state; and in the free state, the safety locking mechanism allows the first locking mechanism to switch to the unlocked state.

In the folding system of this invention, a safety lock mechanism is provided to avoid the risk of accidental folding of the child vehicle due to accidental activation of the first operating unit, thereby improving the safety of the child vehicle.

According to one embodiment, the first locking mechanism includes: a drive member rotatably disposed on the child vehicle, the drive member being connected to the first operating unit and the safety locking mechanism, the drive member being configured to rotate by being driven by the first operating unit, wherein when the safety locking mechanism is in the safe state, the safety locking mechanism prevents the drive member from rotating, and when the safety locking mechanism is in the free state, the safety locking mechanism allows the drive member to rotate; and a transmission member connected to the drive member, wherein the rotation of the drive member drives the transmission member to displace, and the downward displacement of the transmission member in the vertical direction drives the first locking mechanism to switch from the locked state to the unlocked state.

According to one embodiment, the drive includes: a first protrusion connected to the transmission member; and a first recess into which at least a portion of the safety locking mechanism enters to prevent the drive from rotating; or disengages from the first recess to allow the drive to rotate.

According to one embodiment, the transmission element includes a second recess, in which the first protrusion is connected.

According to one embodiment, the first locking mechanism further includes: a release member connected to the transmission member; and a first locking member connected to the release member, wherein the first locking member is lockably connected to the rider and the forefoot. The first locking member is slidable between a first position and a second position. In the first position, the first locking member restricts relative rotation between the rider and the forefoot, and the first locking mechanism is in the locked state. In the second position, the first locking member allows relative rotation between the rider and the forefoot, and the first locking mechanism is in the unlocked state. Displacement of the transmission member drives displacement of the release member, and displacement of the release member drives the first locking member to slide from the first position to the second position.

According to one embodiment, the first locking mechanism further includes: a rider connection fixedly connected to the rider, the rider connection having a first receiving portion; and a forefoot connection fixedly connected to the forefoot, the forefoot connection having a second receiving portion. The rider connection and the forefoot connection are pivotally connected, the first receiving portion and the second receiving portion together forming a locking member receiving portion, the first locking member being slidably disposed in the locking member receiving portion. In the first position, the first locking member engages simultaneously with the rider connection and the forefoot connection to restrict relative rotation of the rider and the forefoot; in the second position, the first locking member disengages from at least one of the rider connection and the forefoot connection to allow relative rotation of the rider and the forefoot.

According to one embodiment, the release member has a first connecting post on the side opposite to the first locking member, and the transmission member has a first connecting hole. The first connecting post is inserted into the first connecting hole to connect the release member to the transmission member.

According to one embodiment, the releasing member includes a first inclined surface, and the first locking member includes a second inclined surface. The first inclined surface and the second inclined surface are in contact with each other. When the actuator displaces the releasing member, the first inclined surface presses against the second inclined surface, causing the first locking member to slide away from the releasing member. The first locking member slides from the first position to the second position, and the first locking member disengages from the front foot connector.

According to one embodiment, the inner wall of the first receiving portion is provided with a first tooth, the inner wall of the second receiving portion is provided with a second tooth, and the outer periphery of the first locking member is provided with a third tooth. In the first position, the third tooth simultaneously engages with both the first and second teeth to restrict the relative rotation of the rider and the forefoot; in the second position, the third tooth disengages from the second tooth to allow the relative rotation of the rider and the forefoot.

According to one embodiment, a second connecting post is provided in the second accommodating portion, and a second connecting hole is provided in the first locking member. By inserting the second connecting post into the second connecting hole, the first locking member can be slidably connected to the front foot connecting member.

According to one embodiment, the retraction system further includes: a first repositioning member disposed between the first locking member and the rider connection member, the first repositioning member biasing the first locking member toward the first position.

According to one embodiment, the first locking mechanism further includes: an armrest fixing seat rotatably connected to the child vehicle, the armrest fixing seat having a locking hole; and a second locking member connected to the transmission member, the second locking member being movable between a third position and a fourth position, in the third position, the second locking member engaging in the locking hole to restrict the rotation of the armrest fixing seat, and in the fourth position, the second locking member disengaging from the locking hole to allow the rotation of the armrest fixing seat, wherein the rotation of the transmission member causes displacement of the transmission member, and the displacement of the transmission member causes the second locking member to move from the third position to the fourth position.

According to one embodiment, the transmission member includes a connecting rod with a protrusion. A second locking member is sleeved on the connecting rod and includes a through groove through which the protrusion passes. When the transmission member is displaced by the driving member, the protrusion pushes against the through groove to drive the second locking member from the third position to the fourth position.

According to one embodiment, the retraction system further includes a second repositioning member disposed between the second locking member and at least a portion of the transmission member, the second repositioning member biasing the second locking member toward the third position.

According to one embodiment, the first locking mechanism further includes: an armrest fixing seat rotatably connected to the side of the front foot connector opposite to the handrail connector, the armrest fixing seat having a locking hole; and a second locking member connected to the transmission member, the second locking member being movable between a third position and a fourth position, in the third position, the second locking member engaging in the locking hole to restrict the rotation of the armrest fixing seat, and in the fourth position, the second locking member disengaging from the locking hole to allow the rotation of the armrest fixing seat, wherein the rotation of the drive member causes the transmission member to displace, and the displacement of the transmission member causes the second locking member to move from the third position to the fourth position.

According to one embodiment, the transmission member includes a connecting rod with a protrusion disposed between the second recess and the first connecting hole. A second locking member is sleeved on the connecting rod and includes a through groove through which the protrusion passes. When the transmission member is displaced under the drive of the driving member, the protrusion pushes against the through groove to drive the second locking member to move from the third position to the fourth position.

According to one embodiment, the retraction system further includes: a second repositioning member disposed between the second locking member and the second recess, one end of the second repositioning member abutting the second locking member, the other end of the second repositioning member abutting the second recess, the second repositioning member biasing the second locking member toward the third position.

According to one embodiment, the safety locking mechanism includes: a second operating part rotatably disposed on the child vehicle, the second operating part being rotatable between a safe position and a free position; and a pusher member rotatably disposed on the child vehicle, a first end of the pusher member being operably connected to the second operating part, and a second end of the pusher member opposite to the first end being capable of entering or disengaging from the first recess of the drive member. In the safe position, the second end of the pusher member enters the first recess, and the safety locking mechanism is in a safe state; in the free position, the second end of the pusher member disengages from the first recess, and the safety locking mechanism is in the free state.

According to one embodiment, the second operating part includes a third inclined surface, and the first end of the pusher is provided with a fourth inclined surface. When the second operating part rotates from the safe position pivot to the free position pivot, the third inclined surface presses against the fourth inclined surface, causing the pusher to rotate, and the second end disengages from the first recess, and the safety lock mechanism switches to the free state.

According to one embodiment, the second end of the pusher is provided with a second protrusion, which can enter or disengage from the first recess of the drive member.

According to one embodiment, the retraction system further includes: a third repositioning member, one end of which abuts against the child carrier, and the other end of which abuts against the pusher member, the third repositioning member biasing the pusher member in a direction that causes the second end to enter the first recess.

Another aspect of the invention provides a child vehicle comprising: a folding system as described in any of the foregoing embodiments; a rider; and forelegs rotatably connected to the rider.

According to one embodiment, the child vehicle further includes: a seat, a drive, a second operating part, and a pusher rotatably disposed on the seat.

According to one embodiment, the child vehicle further includes: a handrail detachably connected to a handrail mounting base.

To facilitate understanding of the present invention, a more comprehensive description of the invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the content disclosed herein.

It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to and integrated with the other component, or there may be an intervening component present. The terms "installed," "one end," "the other end," and similar expressions used in this article are for illustrative purposes only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art within the scope of this invention. The terms used in the description herein are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and/or" as used herein includes any and all combinations of one or more of the related listed items.

Referring to Figures 1 to 3 and Figure 21, Figure 1 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein the child vehicle is in an unfolded state; Figure 2 shows a perspective view of the child vehicle of Figure 1 from another perspective; Figure 3 shows a perspective view of the child vehicle of Figure 1, wherein the child vehicle is in a partially folded state; and Figure 21 shows a side view of the child vehicle provided in an embodiment of the present invention in a folded state. In the embodiments shown in Figures 1 to 3, the child vehicle 1, such as a child safety seat, includes: a rider 10, front legs 20, a seat 30, an armrest 40, and a rear leg 50. The front legs 20 and the rear legs 50 are pivotally connected to the rider 10. The armrest 40 and the seat 30 are pivotally connected to the front legs 20. The child vehicle 1 also includes a folding system 100, through which the child vehicle can be folded from the unfolded state shown in FIG1 through the partially folded state shown in FIG3 to the folded state shown in FIG21.

In the embodiments shown in Figures 1 to 3, the retraction system 100 includes: a first locking mechanism 110, a first operating unit 120, and a safety locking mechanism 130. The first locking mechanism 110 is at least connected to the rider 10 and the forefoot 20, and is switchable between a locked state and an unlocked state; the first operating unit 120 is operatively connected to the first locking mechanism 110 and configured to switch the first locking mechanism 110 from the locked state to the unlocked state. In the locked state, the first locking mechanism 110 restricts the relative rotation of the rider 10 and the forefoot 20. In the unlocked state, the first locking mechanism 110 allows the relative rotation of the rider 10 and the forefoot 20. Safety locking mechanism 130 is operatively connected to first locking mechanism 110, and can switch between a locked state and a free state. In the locked state, safety locking mechanism 130 prevents first locking mechanism 110 from switching to the unlocked state. In the free state, safety locking mechanism 130 allows first locking mechanism 110 to switch to the unlocked state. In this embodiment, by providing safety locking mechanism 130, the risk of accidental closure of child vehicle 1 due to accidental activation of first operating part 120 is avoided, thereby improving the safety of child vehicle 1. Specifically, during use, the user needs to switch the safety locking mechanism 130 to the free state in order to switch the first locking mechanism 110 to the unlocked state by operating the first operating unit 120, thus allowing the child vehicle 1 to be folded. If the user does not switch the safety locking mechanism 130 to the free state, even if the first operating unit 120 is operated, for example, if a child sitting in the child vehicle 1 accidentally touches the first operating unit 120, the first locking mechanism 110 cannot be switched from the locked state to the unlocked state by the first operating unit 120, and the child vehicle 1 cannot be folded.

In the embodiment shown in FIG1, the first operating part 120 may be a flexible pull rope that passes through the operating hole 303 provided on the seat plate 30 and is operably connected to the first locking mechanism 110 (see FIG14a and FIG14b). However, this is only exemplary, and those skilled in the art can choose other suitable structures for the first operating part 120 as needed, such as pull rods, pull bars, etc., and the present invention does not limit this.

Referring to Figures 4 through 6, Figure 4 shows a partial exploded view of a child vehicle provided in an embodiment of the present invention; Figure 5 shows a partial enlarged view of part A in Figure 4; and Figure 6 shows a partial enlarged view of part B in Figure 4. In the embodiment shown in Figure 4, the first locking mechanism 110 includes a drive member 111 and a transmission member 112. The drive member 111 is rotatably disposed on the child vehicle 1, for example, the drive member 111 is rotatably disposed under the seat plate 20. The drive member 111 is operatively connected to a first operating unit 120 and a safety locking mechanism 130. The drive member 111 is pivoted along L1 by being driven by the first operating unit 120. When the safety locking mechanism 130 is in the locked state, it prevents the drive member 111 from rotating. When the safety locking mechanism 130 is in the free state, it allows the drive member 111 to rotate. The transmission member 112 is operatively connected to the drive member 111. The rotation of the drive member 111 drives the transmission member 112 to move downward in the vertical direction (i.e., along direction H1), and the downward vertical displacement of the transmission member 112 drives the first locking mechanism 110 to switch from the locked state to the unlocked state.

The drive unit 111 is provided with a connecting ring 1113, and the end of the first operating part 120 passing through the operating hole 303 is connected to the connecting ring 1113. It should be understood by those skilled in the art that the connecting ring 1113 is merely exemplary, and those skilled in the art can select other suitable connection structures to connect the first operating part according to actual needs, such as connecting hooks, connecting rods, etc.

In the embodiment shown in Figure 4, the drive member 111 includes a first protrusion 1111 and a first recess 1112. The first protrusion 1111 is connected to the transmission member 112, and at least a portion of the safety locking mechanism 130 enters or disengages from the first recess 1112. The transmission member 112 extends vertically, and one end of the transmission member 112 is provided with a second recess 1121. The first protrusion 1111 enters the second recess 1121 to connect to the transmission member 112. When the user lifts the first operating part 120 upwards, the drive member 111 rotates downwards, and the first protrusion 1111 drives the transmission member 112 to move downwards in the vertical direction through the second recess 1121.

Referring again to Figures 4 to 6, the first locking mechanism 110 further includes a release member 113 and a first locking member 114. The release member 113 is connected to the transmission member 112, and the first locking member 114 is operatively connected to the release member 113 and lockably connected to the rider 10 and forefoot 20. The first locking member 114 is slidable between a first position and a second position. In the first position, the first locking member 114 restricts the relative rotation of the rider 10 and forefoot 20, and the first locking mechanism 110 is in a locked state. In the second position, the first locking member 114 allows relative pivoting of the rider 10 and the front foot 20, and the first locking mechanism 110 is in the unlocked state. The downward displacement of the transmission member 112 in the vertical direction drives the release member 113 to move downward in the vertical direction, and the downward displacement of the release member 113 in the vertical direction drives the first locking member 114 to slide from the first position to the second position.

Furthermore, the seat plate 30 is provided with a connecting portion 302 and a mounting cover 301. The connecting portion 302 includes a connecting groove 3021, and the mounting cover 301 covers the connecting groove 3021. The transmission member 120 is provided on the side of the mounting cover 301 facing the connecting groove 3021, thereby at least partially receiving the transmission member 120 in the connecting groove 3021. The other end of the transmission member 120 opposite to the end provided with the second recess 1121 is provided with a first connecting hole 1122. The release member 113 is provided with a first connecting post 1131 on the side away from the first locking member 114. The first connecting post 1131 is inserted into the first connecting hole 1122, so that the transmission member 120 is fixedly connected to the release member 113.

Specifically, when the user pulls the first operating part 120, the drive member 111 rotates, and the first protrusion 1111 drives the transmission member 112 to move downward in the vertical direction through the second concave hole 1121. The downward movement of the transmission member 112 in the vertical direction drives the release member 113 to move downward in the vertical direction. When the release member 113 moves downward in the vertical direction, it presses the first locking member 114, forcing the first locking member 114 from the first position to the second position, thereby releasing the first locking mechanism 110 to allow the child carrier 1 to fold.

Referring to Figure 6, the first locking mechanism 110 further includes a rider connection 115 and a forefoot connection 116. The rider connection 115 is fixedly connected to the rider 10 and has a first receiving portion 1151. The forefoot connection 116 is fixedly connected to the forefoot 20 and has a second receiving portion 1161. The rider connection 115 and the forefoot connection 116 are pivotally connected, and the first receiving portion 1151 and the second receiving portion 1161 together form a locking member receiving portion 117, in which the first locking member 114 is slidably disposed. In the first position, the first locking member 114 engages simultaneously with the rider connector 115 and the forefoot connector 116 to restrict relative rotation of the rider 10 and the forefoot 20. In the second position, the first locking member 114 disengages from at least one of the rider connector 115 and the forefoot connector 116 to allow relative rotation of the rider 10 and the forefoot 20.

Specifically, when the first locking member 114 moves from the first position to the second position, the first locking member 114 disengages from the forefoot connection 116 to allow relative rotation of the rider 10 and the forefoot 20. Alternatively, the first locking member 114 may also disengage from the rider connection 115.

Furthermore, a first reset member 140 is provided between the first locking member 114 and the rider connection member 115, the first reset member 140 biasing the first locking member 114 toward a first position. Specifically, the first reset member 140 is a spring. Alternatively, the first reset member 140 can also be other suitable structures, such as torsion springs, leaf springs, etc., as long as they can meet the requirement of biasing the first locking member 114 toward the first position.

Furthermore, the seat plate 30 is also provided with a ring-shaped connecting part 3022, with the front foot connecting member 116 connected to one side of the ring-shaped connecting part 3022, and the other side of the ring-shaped connecting part 3022 is rotatably connected to an armrest fixing seat 118. The armrest fixing seat 118 is used to connect the armrest 40, which will be described in more detail later.

Furthermore, the annular connecting portion 3022 is disposed above the connecting groove 3021, and the annular connecting portion 3022 is provided with a second through hole 3023, so that the connecting groove 3021 and the annular connecting portion 3022 are connected. The front foot connecting member 116 is provided with a first through hole 1164, which is connected to the second receiving portion 1161, thereby connecting to the locking member receiving portion 117. When the front foot connecting member 116 is connected to the annular connecting portion 3022, the first through hole 1164 and the second through hole 3023 are aligned, so that the transmission member 120 received in the connecting groove 3021 can enter the second receiving portion 1161 through the first through hole 1164 and the second through hole 3023 to connect to the unlocking member 113.

Referring to Figures 7a and 7b, Figure 7a shows a schematic diagram of the unlocking component; Figure 7b shows a schematic diagram of the first locking component. The unlocking component 113 includes a first inclined surface 1132. The first locking component 114 includes a second inclined surface 1141. The first inclined surface 1132 and the second inclined surface 1141 are in contact with each other. The shapes of the first inclined surface 1132 and the second inclined surface 1141 are configured such that when the release member 113 moves downward in the vertical direction, the first inclined surface 1132 presses the second inclined surface 1141, causing the first locking member 114 to slide away from the release member 113. The first locking member 114 slides from the first position to the second position, and the first locking member 114 disengages from the engagement with the front foot connecting member 116. Thus, the first locking mechanism 110 switches from the locked state to the released state.

Referring also to Figures 6 to 9 and Figure 12, Figure 8 shows a partial exploded view of a child vehicle provided in an embodiment of the present invention, omitting the seat plate and front foot connector, with the first locking mechanism in the locked state; Figure 9 shows a partial enlarged view of part C in Figure 8; Figure 12 shows a cross-sectional view taken along line Z-Z in Figure 2, omitting some structures of the child vehicle, with the first locking mechanism in the locked state. The first receiving portion 1151 is a generally cylindrical cavity, and the circumferential inner wall of the first receiving portion 1151 is provided with first teeth 1152, which are arranged at equal intervals along the circumference of the first receiving portion 1151. The second receiving portion 1161 is a generally cylindrical cavity. A second tooth 1162 is provided on the inner wall of the second receiving portion 1161, and the second teeth 1162 are arranged at equal intervals along the circumference of the second receiving portion 1161. The first locking member 114 has a generally cylindrical structure, and a third tooth 1142 is provided on the outer periphery of the first locking member 114, and the third teeth 1142 are arranged at equal intervals along the circumference of the first locking member 114. The module of the first tooth 1152, the second tooth 1162, and the third tooth 1142 is configured such that the first tooth 1152 can mesh with the second tooth 1162 and the third tooth 1142.

In the embodiment shown in Figure 12, a second connecting post 1163 is provided in the second receiving portion 1161, and a first locking member 114 is provided with a second connecting hole 1143. By inserting the second connecting post 1163 into the second connecting hole 1143, the first locking member 114 is slidably connected to the front foot connecting member 116. The first locking member 114 is able to slide between a first position and a second position along the axis of the second connecting post 1163. Specifically, under the action of the first reset member 140, the first locking member 114 is in the first position, and the third tooth 1142 simultaneously meshes with the first tooth 1152 and the second tooth 1162, thereby restricting the relative rotation of the rider connection member 115 and the front foot connection member 116, and thus restricting the relative rotation of the rider 10 and the front foot 20.

Referring also to Figures 6, 7a, 7b, 10, 11, and 13, Figure 10 shows a partial exploded view of a child vehicle provided in an embodiment of the present invention, omitting the seat plate and front foot connection, with the first locking mechanism in the unlocked state. Figure 11 shows a partial enlarged view of part D in Figure 10; Figure 13 shows a schematic diagram of the first locking mechanism in Figure 12 in the unlocked state. When the user pulls the first operating part 120, the drive member 111 pivots around axis L1, causing the transmission member 112 to displace downward in the vertical direction (i.e., along the H1 direction), thereby causing the release member 113 to displace downward in the vertical direction (i.e., along the H1 direction). By pressing the second inclined surface 1141 with the first inclined surface, the first locking member 114 slides away from the release member 113, and the first locking member 114 slides from the first position to the second position along the axis of the second connecting post 1163. At this time, the third tooth 1142 disengages from the second tooth 1162 to allow relative rotation of the rider connection 115 and the front foot connection 116, thereby allowing relative rotation of the rider 10 and the front foot 20.

Referring to Figures 15, 16, and 22 to 25, Figure 15 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein the structure of the seat plate is omitted; Figure 16 shows a partial enlarged view of part F in Figure 15; Figure 22 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein the second locking member 119 is in the third position; Figure 23 shows a partial enlarged view of part J in Figure 22; Figure 24 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein the second locking member 119 is in the fourth position; and Figure 25 shows a partial enlarged view of part K in Figure 22. The first locking mechanism 110 further includes: a handrail fixing seat 118 and a second locking member 119. The handrail holder 118 is pivotally connected to the side of the front foot connector 116 opposite to the handrail connector 115, and the handrail holder 118 is provided with a locking hole 1181 (see Figure 23). A second locking member 119 is connected to the transmission member 112, and the second locking member 119 is movable in the vertical direction between a third position and a fourth position. In the third position, the second locking member 119 engages in the locking hole 1181 to restrict the pivoting of the handrail holder 118. In the fourth position, the second locking member 119 disengages from the locking hole 1181 to allow the pivoting of the handrail holder 118. The pivoting of the drive member 111 causes the transmission member 112 to move downward in the vertical direction (i.e., along the H1 direction), and the downward displacement of the transmission member 112 in the vertical direction drives the second locking member 119 to move from the third position to the fourth position.

Referring to Figure 5, the transmission member 112 includes a connecting rod 1123, on which a protrusion 1124 is provided. The connecting rod 1123 is disposed between the second recess 1121 and the first connecting hole 1122. A second locking member 119 is sleeved on the connecting rod 1123. The second locking member 119 includes a through groove 1191 extending in the vertical direction, through which the protrusion 1124 passes. When the transmission member 112 moves downward in the vertical direction (i.e., along the H1 direction), the protrusion 1124 pushes against the through groove 1191 to drive the second locking member 119 to move from the third position to the fourth position. Optionally, a second repositioning member 150 is provided between the second locking member 119 and the second recess 1121. One end of the second repositioning member 150 abuts against the second locking member 119, and the other end of the second repositioning member 150 abuts against the second recess 1121. The second repositioning member 150 biases the second locking member 119 toward the third position. Specifically, the second repositioning member 150 is a spring. Optionally, the second repositioning member 150 can also be other suitable structures, such as torsion springs, leaf springs, etc., as long as they can meet the requirement of biasing the second locking member 119 toward the third position.

Referring to Figures 15, 16, 17a, and 17b, Figure 17a shows a bottom view of a child vehicle provided in an embodiment of the present invention, wherein the safety locking mechanism is in a safe position; Figure 17b shows a partial enlarged view of part G in Figure 17a. The safety locking mechanism 130 includes a second operating part 1301 and a pusher 1302. The second operating part 1301 is rotatably disposed on the child vehicle 1. The second operating part 1301 can pivot between a safe position and a free position. Optionally, the second operating part 1301 is rotatably disposed on the seat plate 30 for convenient operation by the user. Specifically, the second operating part 1301 is a button. Alternatively, the second operating part 1301 can also be other suitable structures, such as knobs, levers, etc., as long as it can pivot between the safe position and the free position. The pusher 1302 is rotatably disposed on the child vehicle 1. Optionally, the pusher 1302 is rotatably disposed on the underside of the seat plate 30. The pusher 1302 can pivot about the pivot axis L2. The pusher 1302 has a rod-shaped structure, with its first end operably connected to the second operating part 1301, and its second end opposite to the first end able to enter or disengage from the first recess 1112 of the drive member 111.

As shown in Figures 16 and 17b, the second operating part 1301 is in the safe position, and the second end of the pusher 1302 is located in the first recess 1112. At this time, the safety lock mechanism 130 is in the safe state, and the rotation of the drive 111 around the pivot axis L1 is restricted.

Referring to Figures 18, 19, 20a, and 20b, Figure 18 shows a perspective view of a child vehicle provided in an embodiment of the present invention, with the seat plate partially omitted; Figure 19 shows a partial enlarged view of part H in Figure 18; Figure 20a shows a bottom view of a child vehicle provided in an embodiment of the present invention, with the safety locking mechanism in a free state; Figure 20b shows a partial enlarged view of part I in Figure 20a. When the user presses the second operating part 1301, the second operating part 1301 moves into a free position. The second operating part 1301 drives the pusher 1302 to rotate around the pivot axis L2, thereby causing the second end of the pusher 1302 to disengage from the first recess 1112. At this time, the safety lock mechanism 130 is in a free state, and the rotation of the drive component 111 around the pivot axis L1 is not restricted.

Comparing Figures 16 and 19, the second operating part 1301 includes a third inclined surface 1303, and the first end of the pusher 1302 is provided with a fourth inclined surface 1304. When the second operating part 1301 pivots from the safe position to the free position, the third inclined surface 1303 presses against the fourth inclined surface 1304, causing the pusher 1302 to pivot, and the second end disengages from the first recess 1112, switching the safety lock mechanism 130 to the free state. Optionally, the second end of the pusher 1302 is provided with a second protrusion 1305, which can enter or disengage from the first recess 1112 of the drive member 111. Optionally, a third reset member 1304 is also provided. One end of the third reset member 1304 abuts against the child carrier 1, and the other end of the third reset member 1304 abuts against the push member 1302. The third reset member 1304 biases the push member 1302 in a direction that causes the second end to enter the first recess 1112. Optionally, the third reset member 1304 is located on the lower side of the seat plate 30, with one end of the third reset member 1304 on the seat plate 30 and the other end abutting against the push member 1302. Specifically, the third reset member 1304 is a spring. Alternatively, the third reset member 1304 can also be other suitable structures, such as torsion springs, leaf springs, etc., as long as they can meet the requirement of biasing the push member 1302 in the direction that allows the second end to enter the first recess 1112.

The working principle of a child vehicle 1 with a folding system 100 according to an embodiment of the present invention is described below with reference to Figures 1, 5, 6, 9, 11, 16, 19, 21, 23 and 25. The child vehicle 1 shown in Figure 1 is in the unfolded state. When the user needs to fold up the child carrier 1, the user presses the second operating part 1301 (e.g., a button) provided on the seat plate 30. The third inclined surface 1303 of the second operating part 1301 presses the fourth inclined surface 1304 of the push member 1032. The push member 1032 rotates around the pivot axis L2. The second protrusion 1305 at the second end of the push member 1302 disengages from the first recess 1112. As a result, the safety lock mechanism 130 moves from the safe state to the free state, and the rotation of the drive member 111 around the pivot axis L1 is not restricted. Then, the user pulls the first operating part 120 (e.g., pull rope), the drive 111 rotates around the axis L1, the transmission 112 moves downward in the vertical direction (i.e., along direction H1), and the release 113 moves downward in the vertical direction (i.e., along direction H1). By pressing the second inclined surface 1141 against the first inclined surface 1132, the first locking member 114 slides from the first position to the second position along the axis of the second connecting post 1163. The third tooth 1142 disengages from the engagement with the second tooth 1162, and the first locking mechanism 110 enters the unlocked state from the locked state. At this time, the relative rotation of the rider 10 and the front foot 20 is allowed, and the user can fold up the rider 10 and the front foot 20 of the child vehicle 1. When the transmission member 112 moves downward in the vertical direction (i.e., along direction H1), the protrusion 1124 pushes against the through groove 1191, causing the second locking member 119 to move downward in the vertical direction (i.e., along direction H1). This disengages the second locking member 119 from the locking hole 1181, allowing the armrest fixing seat 118 to rotate, and the user can fold the armrest 40 of the child vehicle 1. At this point, the child vehicle 1 enters the folded state, and the user can fold the child vehicle 1 to the final folded state shown in FIG. 21.

When the child vehicle 1 is in the unfolded state as shown in FIG. 1, if the user does not press the second operating part 1301 to move the safety lock mechanism 130 from the safe state to the free state, but instead directly pulls the first operating part 120 (for example, a child sitting in the child vehicle 1 accidentally pulls the first operating part 120), at this time, since the second protrusion 1305 at the second end of the pusher 1302 is located in the first recess 1112 of the drive member 11, this restricts the rotation of the drive member 111 around the pivot axis L1. As a result, the transmission member 112 cannot move downward in the vertical direction (i.e., along direction H1), which causes the first locking mechanism 110 to be unable to move from the locked state to the unlocked state, and the second locking member 119 to be unable to disengage from the locking hole 1181. Therefore, the child vehicle 1 cannot enter the folded state.

The folding system 100 and child vehicle 1 provided by the embodiments of the present invention avoid the risk of accidental folding of the child vehicle 1 due to accidental activation of the first operating part 120 by setting a safety lock mechanism 130, thereby improving the safety of the child vehicle 1.

The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

The embodiments described above merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of this invention patent shall be determined by the appended patent application.

1: Child vehicle; 10: Driver; 20: Front foot; 30: Seat; 40: Armrest; 50: Rear foot; 100: Folding system; 110: First locking mechanism; 111: Drive unit; 112: Transmission unit; 113: Release unit; 114: First locking element; 115: Driver connection; 116: Front foot connection; 117: Locking element housing; 118: Armrest mounting base; 119: Second locking element; 120: First operating part; 130: Safety locking mechanism; 140: First reset element; 150: Second reset element; 160: Third reset element; 301: Mounting cover; 302: Connecting part; 303: Operating hole; 1111: First protrusion; 1112: First recess. 1121: Second concave hole 1122: First connecting hole 1123: Connecting rod 1124: Protrusion 1131: First connecting post 1132: First inclined surface 1141: Second inclined surface 1142: Third tooth 1143: Second connecting hole 1151: First receiving part 1152: First tooth 1161: Second receiving part 1162: Second tooth 1163: Second connecting post 1164: First through hole 1181: Locking hole 1191: Through groove 1301: Second operating part 1302: Pushing member 1303: Third inclined surface 1304: Fourth inclined surface 1305: Second protrusion 3021: Connecting groove 3023: Second through hole

The above and other objects, features and advantages of the invention will become clearer through a more detailed description of the preferred embodiments of the invention shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the drawings, and the drawings are not intentionally scaled down to actual dimensions; the emphasis is on highlighting the main points of the invention.

Other features, objectives, and advantages of the invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the accompanying figures.

Figure 1 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein the child vehicle is in an unfolded state.

Figure 2 shows a three-dimensional view of the child vehicle in Figure 1 from another perspective.

Figure 3 shows a three-dimensional view of the child vehicle in Figure 1, in which the child vehicle is in a partially folded state.

Figure 4 shows a partial exploded view of a child vehicle provided in an embodiment of the present invention.

Figure 5 shows a magnified view of part A in Figure 4.

Figure 6 shows a magnified view of part B in Figure 4.

Figure 7a shows a schematic diagram of the structure of the release lock.

Figure 7b shows a schematic diagram of the structure of the first locking element.

Figure 8 shows a partial exploded view of a child vehicle provided in an embodiment of the present invention, in which the seat plate and front foot connection are omitted, and the first locking mechanism is in the locked state.

Figure 9 shows a magnified view of part C in Figure 8.

Figure 10 shows a partial exploded view of a child vehicle provided in an embodiment of the present invention, in which the seat plate and front foot connection are omitted, and the first locking mechanism is in the unlocked state.

Figure 11 shows a partial enlarged view of part D in Figure 10.

Figure 12 shows a cross-sectional view taken along line Z-Z in Figure 2, in which part of the child vehicle structure is omitted, and the first locking mechanism is in the locked state.

Figure 13 is a schematic diagram of the first locking mechanism in Figure 12 in the unlocked state.

Figure 14a shows a three-dimensional view of a child vehicle provided in an embodiment of the present invention from a low-angle view.

Figure 14b shows a magnified view of part E in Figure 14a.

Figure 15 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein part of the seat structure is omitted.

Figure 16 shows a partial enlarged view of part F in Figure 15.

Figure 17a shows a bottom view of a child vehicle provided in an embodiment of the present invention, in which the safety locking mechanism is in a safe state.

Figure 17b shows a magnified view of part G in Figure 17a.

Figure 18 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein part of the seat structure is omitted.

Figure 19 shows a magnified view of part H in Figure 18.

Figure 20a shows a bottom view of a child vehicle provided in an embodiment of the present invention, in which the safety locking mechanism is in a free state.

Figure 20b shows a magnified view of part I in Figure 20a.

Figure 21 shows a side view of a child vehicle provided in an embodiment of the present invention in a folded state.

Figure 22 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein the second locking member is in the third position.

Figure 23 shows a magnified view of part J in Figure 22.

Figure 24 shows a perspective view of a child vehicle provided in an embodiment of the present invention, wherein the second locking member is in the fourth position.

Figure 25 shows a magnified view of part K in Figure 24.

111: Driver

112: Transmission Components

116: Front foot connector

118: Armrest Fixing Base

119: Second locking component

150: Second reset component

301: Install cover

1111: First convex pillar

1112: First concave hole

1124: Protrusion

1191: Through slot

1301: Second Operations Department

1302: Pusher component

1303: Third inclined plane

1304: Fourth inclined plane

1305: Second convex pillar

Claims (10)

A retraction system for a child vehicle, the child vehicle including at least a rider and forelegs pivotally connected to each other, the retraction system comprising: a first locking mechanism connected at least to the rider and the forelegs, the first locking mechanism being switchable between a locked state and an unlocked state; a first operating unit connected to the first locking mechanism and configured to switch the first locking mechanism from the locked state to the unlocked state, in the locked state, the first locking mechanism restricting relative pivoting of the rider and the forelegs, and in the unlocked state, the first locking mechanism allowing relative pivoting of the rider and the forelegs; and a safety locking mechanism connected to the first locking mechanism, the safety locking mechanism being capable of... The safety locking mechanism can switch between a secured state and a free state. In the secured state, the safety locking mechanism prevents the first locking mechanism from switching to the unlocked state; in the free state, the safety locking mechanism allows the first locking mechanism to switch to the unlocked state. The first locking mechanism includes a drive rotatably mounted on the child vehicle, the drive being connected to the first operating unit and the safety locking mechanism. The drive is configured to rotate by being driven by the first operating unit. When the safety locking mechanism is in the secured state, the safety locking mechanism prevents the drive from rotating; when the safety locking mechanism is in the free state, the safety locking mechanism allows the drive to rotate. The retraction system as described in claim 1, wherein the first locking mechanism further includes: a transmission member connected to the drive member; wherein the pivoting of the drive member drives the transmission member to displace, and the downward displacement of the transmission member in the vertical direction drives the first locking mechanism to switch from the locked state to the unlocked state. The retraction system as described in claim 2, wherein the first locking mechanism further comprises: a release member connected to the transmission member; and a first locking member connected to the release member, and the first locking member being lockably connected to the rider and the forefoot; wherein the first locking member is slidable between a first position and a second position, in the first position, the first locking member restricts relative rotation of the rider and the forefoot, and the first locking mechanism is in the locked state; in the second position, the first locking member allows relative rotation of the rider and the forefoot, and the first locking mechanism is in the unlocked state; wherein displacement of the transmission member drives displacement of the release member, and displacement of the release member drives the first locking member to slide from the first position to the second position. The retraction system as described in claim 3, wherein the first locking mechanism further comprises: a rider connection fixedly connected to the rider, the rider connection having a first receiving portion; and a forefoot connection fixedly connected to the forefoot, the forefoot connection having a second receiving portion; wherein the rider connection and the forefoot connection are pivotally connected, the first receiving portion and the second receiving portion together forming a locking member receiving portion. The first locking member is slidably disposed in the locking member receiving portion; wherein in the first position, the first locking member engages simultaneously with the rider connection and the forefoot connection to restrict relative rotation of the rider and the forefoot; and in the second position, the first locking member disengages from at least one of the rider connection and the forefoot connection to allow relative rotation of the rider and the forefoot. The retraction system as described in claim 4 further includes: a first reset member disposed between the first locking member and the rider connection member, the first reset member biasing the first locking member toward the first position. The folding system as described in claim 2, wherein the first locking mechanism further comprises: an armrest holder rotatably connected to the child vehicle, the armrest holder having a locking hole; and a second locking member connected to the transmission member, the second locking member being movable between a third position and a fourth position, wherein in the third position the second locking member engages in the locking hole to restrict the pivoting of the armrest holder, and in the fourth position the second locking member disengages from the locking hole to allow the pivoting of the armrest holder; wherein the pivoting of the transmission member causes displacement of the transmission member, and the displacement of the transmission member causes the second locking member to move from the third position to the fourth position. The retraction system as described in claim 6 further includes: a second reset member disposed between the second locking member and at least a portion of the transmission member, the second reset member biasing the second locking member toward the third position. The retraction system as described in any one of claims 3 to 7, wherein the safety locking mechanism comprises: a second operating part rotatably disposed on the child vehicle, the second operating part being rotatable between a safe position and a free position; and a pusher member rotatably disposed on the child vehicle, a first end of the pusher member being operably connected to the second operating part, and a second end of the pusher member opposite to the first end being capable of entering or disengaging from the first recess of the drive member; wherein in the safe position, the second end of the pusher member enters the first recess, and the safety locking mechanism is in a safe state; and in the free position, the second end of the pusher member disengages from the first recess, and the safety locking mechanism is in the free state. The retraction system as described in claim 8 further includes: a third repositioning member, one end of which abuts against the child carrier, and the other end of which abuts against the pusher member, the third repositioning member biasing the pusher member in a direction that causes the second end to enter the first recess. A child vehicle comprising: a folding system as described in any one of claims 1 to 9; a rider; and a forefoot rotatably connected to the rider.