NL2023365B1 - Automatically collapsible stroller frame - Google Patents

Automatically collapsible stroller frame Download PDF

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Publication number
NL2023365B1
NL2023365B1 NL2023365A NL2023365A NL2023365B1 NL 2023365 B1 NL2023365 B1 NL 2023365B1 NL 2023365 A NL2023365 A NL 2023365A NL 2023365 A NL2023365 A NL 2023365A NL 2023365 B1 NL2023365 B1 NL 2023365B1
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NL
Netherlands
Prior art keywords
frame according
buggy frame
bar
leg bar
automatically folding
Prior art date
Application number
NL2023365A
Other languages
Dutch (nl)
Other versions
NL2023365A (en
Inventor
Yang Shunping
Original Assignee
Zhongshan Kingmoon Children Products Co Ltd
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Filing date
Publication date
Application filed by Zhongshan Kingmoon Children Products Co Ltd filed Critical Zhongshan Kingmoon Children Products Co Ltd
Publication of NL2023365A publication Critical patent/NL2023365A/en
Application granted granted Critical
Publication of NL2023365B1 publication Critical patent/NL2023365B1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/068—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable by sliding a bushing along a rod, e.g. like folding means of an umbrella
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
    • B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
    • B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
    • B62B7/08—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable in the direction of, or at right angles to, the wheel axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/10—Perambulator bodies; Equipment therefor
    • B62B9/102—Perambulator bodies; Equipment therefor characterized by details of the seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B9/00—Accessories or details specially adapted for children's carriages or perambulators
    • B62B9/10—Perambulator bodies; Equipment therefor
    • B62B9/102—Perambulator bodies; Equipment therefor characterized by details of the seat
    • B62B9/104—Perambulator bodies; Equipment therefor characterized by details of the seat with adjustable or reclining backrests
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/003—Hand-propelled vehicles or sledges being foldable or dismountable when not in use with actuation mechanisms which drive the folding or unfolding operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/20—Catches; Locking or releasing an articulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/20—Catches; Locking or releasing an articulation
    • B62B2205/22—Catches; Locking or releasing an articulation remotely controlled, e.g. from the handlebar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B2205/00—Hand-propelled vehicles or sledges being foldable or dismountable when not in use
    • B62B2205/20—Catches; Locking or releasing an articulation
    • B62B2205/24—Catches; Locking or releasing an articulation to hold in the folded position

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Handcart (AREA)

Abstract

The present invention provides an automatically collapsible stroller frame, comprising a front leg bar, a rear leg bar, a handlebar set and an elastic member. The handlebar set comprises a lower handlebar tube and an upper handlebar tube that is rotatably disposed at the upper end of the lower handlebar tube, the handlebar tube is provided with a sliding member that is slidable along its axial direction, a locking assembly is provided between the lower handlebar tube and the sliding member for locking or unlocking the sliding member, the lower end of the lower handlebar tube is hinged to the middle of the rear leg bar, a transmission member is hinged between the sliding member and the upper portion of the rear leg bar, the upper end of the front leg bar is hinged to the lower end of the transmission member and/or the upper end of the rear leg bar, and an elastic member is disposed between the front leg bar and the rear leg bar. When the stroller collapses, the front leg bar and the rear leg bar are automatically brought together under the elastic pull of the elastic member. At the same time, the transmission member drives the sliding member to slide down the axial direction of the lower handlebar tube to drive the lower handlebar tube towards the direction of the rear leg bar, thereby collapsing the whole stroller frame, which is very fast and convenient.

Description

P34060NLO0/WHA Title: Automatically collapsible stroller frame Technical Field The present invention relates to the field of strollers, in particular to an automatically collapsible stroller frame.
Background Art The stroller is a functional carriage designed to facilitate children's outdoor activities, greatly reducing the burden of carrying children when going out. In order to facilitate carrying and transportation, conventional strollers are generally foldable to reduce space occupation. However, most conventional strollers need to be collapsed manually, and the collapsing operation is rather complicated. CN205971433 discloses a stroller which is to be manually folded and unfolded. This is quite difficult, especially for a mother who at the same time carries a toddler on one arm and only has one free hand to fold or unfold the stroller. The stroller comprises two sliders which need to be hand-operated. Furthermore in the collapsed state the stroller of CN205971433 can only lie flat on the ground. It is not capable of standing upright. It is in particular not capable of remaining upright during the folding operation. This makes the stroller of CN205971433 cumbersome in operation, especially for a mother holding her child in one arm. CN205168603U discloses another stroller. This stroller has a handlebar tube which disconnects from the rear leg bar, see in particular figure 9 of CN205168603U. This is very complex and cumbersome for a user. The folding operation is also very different because the upper handlebar tube rotates to the rear and the hinge between the upper handlebar tube and the lower handlebar tube, indicated with 14 in fig. 4 of CN205168603U, does not move toward the rear leg, but stays at the opposite side of the collapsed stroller frame. It was recognized in the present invention that these features make it difficult to maintain the balance of the stroller frame during the collapsing and therefore make it difficult to ensure that the stroller frame stays upright both during and after the collapsing operation.
2. Summary of the Present Invention The technical problem to be solved by the present invention is to provide an automatically collapsible stroller frame to make the collapsing operation more convenient and faster. The object of the present invention is achieved by: an automatically collapsible stroller frame, comprising: a front leg set, the front leg set comprising a front leg bar; a rear leg set, the rear leg set comprising a rear leg bar; a handlebar set, the handlebar set comprising a lower handlebar tube and a U-shaped upper handlebar tube that is rotatably disposed at an upper end of the lower handlebar tube, the lower handlebar tube being provided with a sliding member that is slidable along its axial direction, a locking assembly being disposed between the lower handlebar tube and the sliding member for locking ar unlocking the sliding member to be fixed on the lower handlebar tube or to slide in the axial direction of the lower handlebar tube, the lower end of the lower handlebar tube being hinged to the middle portion of the rear leg bar, a transmission member being hinged between the sliding member and the upper portion of the rear leg bar, and the upper end of the front leg bar being hinged to the lower end of the transmission member and/or the upper end of the rear leg bar; and an elastic member, the elastic member being associated with the front leg bar and the rear leg, in particular disposed between the front leg bar and the rear leg bar such that when the stroller frame collapses, the front leg bar and the rear leg bar are automatically brought close together under the elastic pulling of the elastic member, thereby completing automatic collapsing.
With the above-mentioned configuration, when the upper handlebar tube is rotated and folded relative to the lower handlebar tube, the locking assembly unlocks the sliding member, and the front leg bar and the rear leg bar automatically close together under the elastic pulling of the elastic member. At the same time, the transmission member drives the sliding member to slide down the axial direction of the lower handlebar tube to drive the lower handlebar tube towards the direction of the rear leg bar, thereby collapsing the whole stroller frame, which is very fast and convenient.
The present invention provides an automatically collapsible stroller frame as described above, further comprising a seat set, the front portion of the seat set being hinged to the middle of the front leg bar. The rear end of the seat set may be hinged to the lower end of the lower
-3- handlebar tube, in particular via a connecting base.
The front end of the elastic member may be fixed to the front portion of the seat set, in particular fixed to a front portion or to a middle portion of the seat set.
The elastic member may act between the front portion of the seat set and the rear leg bar.
When the stroller collapses, the front leg bar and the rear leg bar are automatically brought together, and the seat set is also rotated forward to move towards the front leg bar.
The present invention provides an automatically collapsible stroller frame as described above, further comprising a backrest set, the backrest set comprising a U-shaped backrest bar, a connecting base being connected to the lower end of the lower handlebar tube which is hinged to the middle portion of the rear leg bar.
In an embodiment, the end of the backrest bar is hinged to the connecting base, and the rear end of the elastic member is directly or indirectly fixed to the connecting base or directly fixed to the rear leg bar.
When the stroller collapses, the front leg bar and the rear leg bar are automatically brought together, driving the connecting base and the backrest bar to, following the lower handlebar tube, move towards the rear leg bar.
The present invention provides an automatically collapsible stroller frame as described above, wherein the locking assembly comprises a locking pin disposed in the lower handlebar tube and a locking hole disposed in the sliding member, and the locking pin can penetrate the lower handlebar tube and be elastically engaged in the locking hole.
When the locking assembly is in the locked state, the locking pin in the lower handlebar tube is engaged in the locking hole of the sliding member so that the sliding member is not slidable relative to the lower handlebar tube.
In this case, the stroller frame is not collapsible from an unfolded state to a folded state, and thus the stroller frame does not unexpectedly collapse and injure the baby when the stroller is used.
When the locking assembly is in the unlocked state, the locking pin is disengaged from the locking hole, and the sliding member is slidable along the axial direction of the lower handlebar tube.
In this case, the stroller frame is collapsible from an unfolded state to a folded state.
In addition, the locking assembly of the present invention has a simple structure and operates reliably.
The present invention provides an automatically collapsible stroller frame as described above, wherein a rotating base is disposed between the lower handlebar tube and the upper handlebar tube, and a linkage member, in particular a pull cord, is disposed between the rotating base and the locking pin.
To fold the stroller frame, it is only necessary to rotate the upper handlebar tube so that it rotates relative to the lower handle bar tube and is folded.
In
-4- this case, the rotating base rotates at the same time, thereby driving the pull cord to move, and thereby causing the locking pin to be disengaged from the locking hole. In this case, the locking assembly is in the unlocked state, and the stroller frame is automatically collapsible from an unfolded state to a folded state. When it is necessary to unfold the stroller frame, first unfold the other parts of the stroller frame in turn, and then rotate the upper handlebar tube in the opposite direction, and the rotating seat rotates at the same time. The locking pin is reset by the elastic force and inserted into the locking hole, so that the locking assembly is locked when the stroller frame is in an unfolded state.
The present invention provides an automatically collapsible stroller frame as described above, wherein the upper handlebar tube is provided with an unlocking member for unlocking or locking the upper handlebar tube so that it is rotatable or fixable relative to the lower handlebar tube. To fold the stroller frame, it is only necessary to operate the unlocking member so that the upper handlebar tube is unlocked and operate it to rotate relative to the lower handlebar tube and fold, thereby realizing automatic collapsing. When the stroller frame is unfolded, the unlocking member locks the upper handlebar tube so that it is not rotatable relative to the lower handlebar tube.
In an embodiment of the automatically collapsible stroller frame as described above, the upper end of the front leg bar, the lower end of the transmission member, and the upper end of the rear leg bar are coaxially hinged.
In another embodiment of the automatically collapsible stroller frame as described above, the upper end of the front leg bar is hinged to the upper end of the rear leg bar and is not hinged to the lower end of the transmission member.
In yet another embodiment of the automatically collapsible stroller frame as described above, the upper end of the front leg bar is hinged to the lower end of the transmission member and is not hinged to the upper end of the rear leg bar.
In an embodiment, the U-shaped upper handlebar tube is configured to rotate in a forward direction relative to the lower handlebar tube. This ensures that gravity will pull the upper handlebar tube to its end position which is not the case if the upper handlebar tube rotates to the rear. The upper handlebar tube is in particular configured to rotate forward over an angle of more than 150 degrees, in order to collapse the automatically collapsible stroller frame.
In an embodiment, in the collapsed state the automatically collapsible stroller frame can stand
-5- in an upright orientation. This feature is a significant advantage over other strollers, which can only lie flat on the ground. In an embodiment, in the collapsed state the stroller frame can stand on its four wheels, wherein the front leg bar and the rear leg bar extend in an essentially upward direction, more in particular an upright direction, from respectively the front leg wheel and the rear leg wheel when the front leg wheel and the rear leg wheel are in contact with the ground. The relative positions of the four wheels and the positions of the four wheels relative to the centre of gravity make this possible.
In an embodiment, when seen in side view during and after the collapsing movement the centre of gravity of the automatically collapsible stroller frame stays substantially between the front leg wheel and the rear leg wheel, allowing the automatically collapsible stroller frame to collapse to the folded state while staying upright and to remain in the upright position after reaching the collapsed state. This is due to the collapsing movement. The centre of gravity is between and above the front and rear wheels. In an alternative embodiment, the rotating base contacts the ground or is very close to the ground and in this way provides an additional point of support. In this embodiment the centre of gravity can remain between the front leg wheel and the rotating base, in particular between the rear leg wheel and the rotating base, when seen in side view. In an embodiment, during the collapsing the front wheels and the rear wheels stay in contact with the ground and the automatically collapsible stroller frame stays upright.
In an embodiment, in the collapsed state in side view a first distance between the front wheel axis and the connecting base is the same or substantially the same as a second distance between the rear wheel axis and the connecting base. This feature advantageously creates the stable upright position of the stroller in the collapsed state and allows the collapsed stroller to stand upright. The first and second distance are measured to the centre of the connecting base when seen in side view. In an embodiment, the first distance is more than 90 percent and less than 110 percent of the second distance, wherein more in particular the first distance is more than 95 percent and less than 105 percent of the second distance. In an embodiment, when seen in side view a first distance measured from the first hinge
-6- between the front leg bar and the rear leg bar to a rotation axis of the front wheels is at least 90 percent, more in particular at least 95 percent of a second distance measured from the first hinge between the front leg bar and the rear leg bar to a rotation axis of the rear wheels. In an embodiment, in the collapsed state, when seen in side view the rotating base is located atthe rear wheels and the U-shaped upper handlebar tube projects in an upward direction from the rotating base. In an embodiment in the collapsed state, when seen in side view the U-shaped upper handlebar tube is located on an opposite side of the lower handle bar tube as the rear leg bar and is accessible for a user without any obstacles in order to be pulled upward and outward by the user, thereby unfolding the stroller frame. This makes the unfolding operation very easy. In an embodiment, the sliding member provided on the lower handlebar tube is the only sliding member of the automatically collapsible stroller frame. This makes the stroller frame simple and sturdy. In an embadiment, there is no sliding member between the lower handlebar tube and the rear leg bar. This makes the stroller frame simple and sturdy.
In an embodiment the stroller frame further comprises a left connector for a left end of a front arm rest and a right connector for a right end of the front arm rest, wherein the left and right connectors are provided at an upper end of the rear leg bar. The front arm rest can extend from left to right in front of the toddler who is sitting in the stroller, thereby providing additional safety. The left and right connectors may in particular be fixed to the upper end of the rear leg bar. In this way the front arm rest, when present, is also fixed to the rear leg bar. Due to the fixed connection, advantageously, in the collapsed state, the front arm rest extends upwards from the collapsed frame and is very suitable to be used as a handle for carrying the collapsed stroller frame. In an embodiment the connecting base comprises a protruding section which in the unfolded state protrudes forward and in the folded state protrudes to the rear, and wherein the seat set is connected to this protruding section of the connecting base via a seat hinge. In an embodiment, a seat hinge where the seat is hinged to the connecting base is located at
-7- a distance from a lower handlebar hinge where the lower handlebar tube is connected to the rear leg. In an embodiment, a length of front leg bar including a caster is substantially the same as length of the rear leg bar, more in particular more than 95 percent of a length of the rear leg bar. In an embodiment in the collapsed state when seen in side view the front wheel and rear wheel overlap.
In an embodiment when seen in side view in the collapsed state a wheel base axis extends through the front wheel axis and the rear wheel axis and wherein a line extending through the front wheel axis and the connecting member extends at an angle a of more than 75 degrees to the wheel base axis, in particular more than 80 degrees.
In an embodiment when seen in side view in the collapsed state the wheel base axis extends through the front wheel axis and the rear wheel axis and wherein a line extending through the rear wheel axis and the connecting member extends at an angle B of more than 75 degrees to the wheel base axis, in particular more than 80 degrees.
In an embodiment when seen in side view in the collapsed state the wheel base axis extends through the front wheel axis and the rear wheel axis and wherein a line extending through the front wheel axis and the first hinge extends at an angle (y) of more than 75 degrees to the wheel base axis, in particular more than 80 degrees.
These lines which extend at almost right angles to the wheel base axis ensure that the main parts of the stroller are directly above the wheels, in the collapsed state and when seen in side view. This ensures that the stroller can stand upright.
In a further embodiment the lower handlebar tube may have a length which brings the rotating base close to the ground in the collapsed state. For example, the lower handlebar tube may have a length which positions the rotating base close to the ground, in particular at a distance to the ground of less than 5 cm in the collapsed state, preferably less than 3 cm, more preferably is in contact with the ground when the collapsed stroller frame is in the upright position. Advantageously, in this embodiment a further contact point or a further support point which provides more stability for the collapsed stroller is provided by the rotating base.
-8- The present invention provides an automatically collapsible stroller frame as described above, wherein the elastic member is a spring or a rubber band for providing an elastic pulling force in collapsing the stroller, so that the front leg bar and the rear leg bar are automatically brought close together, thereby completing automatic collapsing.
Brief Description of the Drawings Specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein: Figure 1 is a first structural diagram of the present invention when it is unfolded; Figure 2 is a second structural diagram of the present invention when it is unfolded; Figure 3 is a structural view of the present invention when the stroller collapses; Figure 4 is a structural view of the present invention after collapsing of the stroller; Figure 5 is a cross-sectional view of the locking assembly of the present invention in the locked state; Figure 8 is a cross-sectional view of the locking assembly of the present invention in an unlocked state; Figure 7 is a schematic diagram showing the configuration in which the upper end of the front leg bar, the lower end of the transmission member, and the upper end of the rear leg bar are coaxially hinged, Figure 8 is a schematic view showing the configuration in which the upper end of the front leg bar is hinged to the upper end of the rear leg bar and is not hinged to the lower end of the transmission member; and Figure 9 is a schematic view showing the configuration in which the upper end of the front leg bar is hinged to the lower end of the transmission member and is not hinged to the upper end of the rear leg bar. Specific Embodiments As shown in Figure 1 to Figure 7, a first embodiment of an automatically collapsible stroller frame of the present invention comprises: a front leg set 1, the front leg set 1 comprising a front leg bar 11; and a rear leg set 2, the rear leg set 2 comprising a rear leg bar 21. The stroller frame comprises a handlebar set 3. The handlebar set 3 is provided with a slider that is slidable along its axial direction. The handlebar set 3 comprises a lower handlebar tube 31 and a U-shaped upper handlebar tube 32 that is rotatably disposed at an upper end of the lower handlebar tube 31, the lower handlebar tube 31 being provided with a sliding member 4
-9- that is slidable along its axial direction. A locking assembly 5 is provided between the handlebar set 3 and the sliding member 4 for locking or unlocking the sliding member 4. The handlebar set 3 is hinged to the rear leg bar 21, and a transmission member 6 is hinged between the sliding member 4 and the rear leg bar 21 or the front leg bar 11. In one embodiment, the locking assembly 5 is provided between the lower handlebar tube 31 and the sliding member 4 for locking or unlocking the sliding member 4 so that it is fixed to the lower handlebar tube 31 or is slidable in the axial direction of the lower handlebar tube 31. The lower handlebar tube 31 is hinged to the rear leg bar 21 at lower handlebar hinge 78. For example, the lower end of the lower handlebar tube 31 is hinged to the rear leg bar 21, in particular to a middle portion of the rear leg bar 21 at lower handlebar hinge 78. The lower handlebar hinge 78 is provided on a bracket 79 which projects from the rear of the rear leg
12. A transmission member 6 is hinged between the sliding member 4 and the upper portion of the rear leg bar 21 or the upper portion of the front leg bar 11. As shown in Figure 7, the upper end of the front leg bar 11, the lower end of the transmission member 6, and the upper end of the rear leg bar 21 are coaxially hinged at the first hinge 66. The sliding member 4 provided on the lower handlebar tube 31 may be the only sliding member of the automatically collapsible stroller frame. There may be no sliding member between the lower handlebar tube 31 and the rear leg bar 21, only a hinge.
The stroller frame comprises two front wheels 60 and two rear wheels 62. The front wheels 60 rotate about rotation axis 61. The rear wheels 62 rotate about rotation axis 63. The front wheels may be caster wheels which rotate about a (left and right) vertical or substantially vertical rotation axis 64.
A length of front leg bar 11 including the caster 85 is substantially the same as length of the rear leg bar 21, more in particular more than 95 percent of a length of the rear leg bar 21. This improves the stability of the stroller frame when collapsed. The stroller frame further comprises an elastic member 7, the elastic member 7 being a spring or a rubber band. The elastic member 7 is associated with the front leg bar 11 and the rear leg bar 21, in particular disposed between the front leg bar 11 and the rear leg bar 21,
-10- such that when the stroller frame collapses, the front leg bar 11 and the rear leg bar 21 are automatically brought close together under the elastic pulling of the elastic member 7, thereby completing automatic collapsing.
When the upper handlebar tube 32 is rotated relative to the lower handlebar tube 31, thelocking assembly 5 unlocks the sliding member 4, and the front leg bar 11 and the rear leg bar 21 are automatically brought close together by the elastic pulling of the elastic member 7. At the same time, the transmission member 6 drives the sliding member 4 to slide down the axial direction of the lower handlebar tube 31 to drive the lower handlebar tube 31 towardsthe direction of the rear leg bar 21, thereby collapsing the whole stroller frame, which is very fast and convenient.
The stroller frame further comprises a seat set 8, the front portion of the seat set 8 being hinged to the middle of the front leg bar 11, the rear end of the seat set 8 being hinged to thelower end of the lower handlebar tube 31, in particular, the rear end of the seat set 8 being hinged to the connecting base 33 and via the connecting base to the lower end of the lower handlebar tube 31, the front end of the elastic member 7 being fixed to the front portion of the seat set 8, and the elastic member 7 acting between the front portion of the seat set 8 and the rear leg bar 21. When the stroller collapses, the front leg bar 11 and the rear leg bar 21 areautomatically brought together, and the seat set 8 is also rotated forward to move towards the front leg bar 11. The stroller frame further comprises a left connector 70A for a left end of a front arm rest and a right connector 70B for a right end of the front arm rest, wherein the left and right connectorare provided at the upper end of the rear leg bar.
This ensures that when the stroller frame is in the collapsed state, and if the front arm rest is present, it forms a convenient carrying handle for the user to carry the collapsed stroller frame.
The left and right connector may be fixed to the upper end of the rear leg bar and maintainthe same orientation as the rear leg bar.
In this way the front arm rest may protrudes upwardly and form the uppermost part of the collapsed stroller frame.
The connecting base 33 comprises a protruding section 72 which in the unfolded state protrudes forward and in the collapsed state protrudes to the rear.
The seat set 8 isconnected to this protruding section of the connecting base via a seat hinge 77. The seat hinge 77 is located at a distance 88 from the lower handlebar hinge 78 via which the
-11- lower handlebar tube 88 is connected to the rear leg 12. The distance 88 provides a lever which allows the pivoting lower handlebar tube 31 to pull the seat set 7 in a rearward direction as indicated with the arrow 90. This pulls the front leg toward the rear leg.
During the collapsing movement, the protruding section 72 pulls the seat section to the rear, thereby pulling the front leg bar toward the rear leg bar. In this way, the force of gravity pulling on the combined lower handlebar tube 31 and upper handlebar tube 32 and rotating these downward, pulls the front leg 11 toward the rear leg bar 12 during the collapsing. Hence the force of gravity assists the elastic member.
The rear leg bar 12 does not have any local bends, contrary to some strollers of the prior art. This adds to the overall simplicity of the construction. The stroller frame further comprises a backrest set 9, the backrest set 9 comprising a U- shaped backrest bar 91, a connecting base 33 being connected to the lower end of the lower handlebar tube 31 which in turn is hinged to the middle portion of the rear leg bar 21. The end of the backrest bar 91 is hinged to the connecting base 33. The rear end of the elastic member 7 is directly or indirectly fixed to the connecting base 33.
For instance, the rear end of the elastic member 7 may be connected to a transverse rod which interconnects the right and left connecting base 33. The rear end of the elastic member 7 may also be directly fixed to the rear leg bar 21. When the stroller collapses, the front leg bar 11 and the rear leg bar 21 are automatically brought together, driving the connecting base 33 and the backrest bar 91 to, following the lower handlebar tube 31, move towards the rear leg bar 21. The locking assembly 5 comprises a locking pin 51 provided in the lower handlebar tube 31 and a locking hole 52 provided in the sliding member 4, and the locking pin 51 can penetrate the lower handlebar tube 31 and be elastically engaged in the locking hole 52. When the locking assembly 5 is in the locked state, the locking pin 51 in the lower handlebar tube 31 is engaged in the locking hole 52 of the sliding member 4, so that the sliding member 4 is not slidable relative to the lower handlebar tube 31. In this case, the stroller frame is not collapsible from an unfolded state to a folded state, and thus the stroller frame does not unexpectedly collapse and injure the baby when the stroller is used. When the locking assembly 5 is in the unlocked state, the locking pin 51 is disengaged from the locking hole 52, and the sliding member 4 is slidable along the axial direction of the lower handlebar tube 31. In this case, the stroller frame is collapsible from an unfolded state to a folded state. In
-12- addition, the locking assembly 5 of the present invention has a simple structure and operates reliably.
A rotating base 34 is provided between the lower handlebar tube 31 and the upper handlebar tube 32, and a linkage member, in particular a pull cord 57, is disposed between the rotating base 34 and the locking pin 51. A different kind of linkage member such as a rod is also possible.
To fold the stroller frame, it is only necessary to rotate the upper handlebar tube 32, in particular rotate the upper handlebar tube 32 forward, so that it rotates relative to the lower handle bar tube 31 and is folded. In this case, the rotating base 34 rotates at the same time, thereby driving the pulling cord 57 to move so that the locking pin 51 is disengaged from the locking hole 52. In this case, the locking assembly 5 is in an unlocked state, and the stroller frame is automatically collapsible from an unfolded state to a folded state. When it is necessary to unfold the stroller frame, first unfold the other parts of the stroller frame in turn, and then rotate the upper handlebar tube 32 in the opposite direction, and the rotating seat 34 rotates at the same time. It may also be possible to pull the upper handle bar tube and in this unfold the collapsed stroller frame. The locking pin 51 is reset by the elastic force and inserted into the locking hole 52 so that the locking assembly 5 is locked when the stroller frame is an unfolded state.
The upper handlebar tube 32 is provided with an unlocking member 10 for unlocking or locking the upper handlebar tube 32 so that it is rotatable or fixed relative to the lower handlebar tube 31. To fold the stroller frame, it is only necessary to operate the unlocking member 10 so that the upper handlebar tube 32 is unlocked and operate it to rotate relative to the lower handlebar tube 31 and fold, thereby realizing automatic collapsing. When the stroller frame is unfolded, the unlocking member 10 locks the upper handlebar tube 32 so that it is not rotatable relative to the lower handlebar tube 32.
With specific reference to figure 4, when seen in side view in the collapsed state a wheel base axis 80 extends through the front wheel axis 61 and the rear wheel axis 63. A line 81 extending through the front wheel axis 61 and the connecting member 33 extends at an angle a of more than 75 degrees to the wheel base axis (80), in particular more than 80 degrees.
Aline 82 extending through the rear wheel axis 63 and the connecting member 33 extends at an angle (B) of more than 75 degrees to the wheel base axis 80, in particular more than 80 degrees.
-13- A line 83 extending through the front wheel axis and the first hinge 66 extends at an angle (y) of more than 75 degrees to the wheel base axis 80, in particular more than 80 degrees.
In the collapsed state the automatically collapsible stroller frame can stand upright. This is an advantage over many strollers of the prior art including the stroller of CN20597 1433.
In the collapsed state the stroller frame can stand on its four wheels, wherein the front leg bar and the rear leg bar extend in an essentially upward direction, more in particular a substantially upright direction, from respectively the front leg wheel and the rear leg wheel when the front leg wheel and the rear leg wheel are in contact with the ground.
When seen in side view during and after the collapsing movement the centre of gravity 90 of the automatically collapsible stroller frame stays substantially between the front leg wheel and the rear leg wheel, allowing the automatically collapsible stroller frame to collapse to the folded state while staying upright and to remain in the upright position after reaching the collapsed state.
During the collapsing the front wheels and the rear wheels stay in contact with the ground and the automatically collapsible stroller frame stays upright.
In the collapsed state in side view a first distance 74 between the front wheel axis 61 and the connecting base 33 is the same or substantially the same as a second distance 75 between the rear wheel axis 63 and the connecting base 33.
Inthe collapsed state when seen in side view the front wheel 60 and rear wheel 82 may overlap. This keeps the stroller frame compact in the collapsed state. The overlap should not be too much, or the stability will be negatively affected, unless the rotating base 34 provides additional stability by contacting the ground or almost contacting the ground.
Inthe collapsed state, when seen in side view the U-shaped upper handlebar tube 32 is located on an opposite side of the lower handle bar tube 31 as the rear leg bar 12 and is accessible for a user without any obstacles in order to be pulled upward and outward by the user, thereby unfolding the stroller frame.
Another embodiment of the present invention as shown in Figure 8 differs from the above- mentioned configuration only in that the upper end of the front leg bar 11, the lower end of the transmission member 6, and the upper end of the rear leg bar 21 are not coaxially hinged.
-14 - Instead, the upper end of the front leg bar 11 is hinged to the upper end of the rear leg bar 21 and is not hinged to the lower end of the transmission member 8. Although the connection relationship of the front leg bar 11, the transmission member 6, and the rear leg bar 21 is slightly different from that of the first embodiment of the present invention, it is also possible to achieve all the technical effects of the first embodiment of the present invention. A further embodiment of the present invention as shown in Figure 9 differs from the above- mentioned configuration only in that the upper end of the front leg bar 11, the lower end of the transmission member 6, and the upper end of the rear leg bar 21 are not coaxially hinged.
Instead, the upper end of the front leg bar 11 is hinged to the lower end of the transmission member 6 and is not hinged to the upper end of the rear leg bar 21. Although the connection relationship of the front leg bar 11, the transmission member 6, and the rear leg bar 21 is slightly different from that of the first embodiment of the present invention, it is also possible to achieve all the technical effects of the first embodiment of the present invention.
When the present invention is used, the stroller frame is unfolded to a state shown in Figure 1 or Figure 2 (the unfolding operation still needs to be manually performed). To collapse the stroller, it is only necessary to operate the unlocking member 10 so that the upper handlebar tube 32 is unlocked and operate it to rotate relative to the lower handlebar tube 31 and fold. In this case, the rotating base 34 rotates at the same time, thereby driving the pulling cord to move so that the locking pin 51 is disengaged from the locking hole 52. In this case, the locking assembly 5 is in an unlocked state. As shown in Figure 3, under the elastic pull of the elastic member 7, the front leg bar 11 and the rear leg bar 21 are automatically brought together, and the seat set 8 also rotates forward to move towards the front leg bar 11. At the same time, the transmission member 6 drives the sliding member 4 to slide down the axial direction of the lower handlebar tube 31, thereby driving the lower handlebar tube 31 to move towards the rear leg bar 21. The connecting base 33 and the backrest bar 91 are rotated to, following the lower handlebar tube 31, move towards the rear leg bar 21, thereby collapsing the whole stroller frame, which is very quick and convenient. As shown in Figure 4, the collapsed stroller frame, supported by the front and rear castors, stands upright. Therefore, it is possible to place the collapsed stroller upright without the need of laying it flat, thereby saving floor space.
While the present invention has been particularly described above with reference to preferred embodiments, it should be understood that said embodiments are not intended to limit the present invention and that those of ordinary skill in the art can make various modifications, equivalent substitutions, and improvements without departing from the spirit and scope of the present invention as defined by the claims.

Claims (1)

-15--15- CONCLUSIESCONCLUSIONS 1. Automatisch inklapbaar buggyframe, met het kenmerk dat deze omvat: een voorpootset (1), de voorpootset (1) omvattende een voorpootstang (11); een achterpootset (2), de achterpootset (2) omvattende een achterpootstang (21); een handstangset (3), de handstangset (3) omvattende een onderste handstangbuis (31) en een U-vormige bovenste handstangbuis (32) die roteerbaar is verschaft bij een bovenste einde van de onderste handstangbuis (31), waarbij de onderste handstangbuis (31) is voorzien van een glijorgaan (4) dat glijdbaar is langs de axiale richting van de onderste handstang buis, een vergrendelsamenstel (5) dat is verschaft tussen de onderste handstangbuis (31) en het glijorgaan (4) voor het vergrendelen of ontgrendelen van het glijorgaan (4), waarbij het onderste einde van de onderste handstangbuis (31) scharnierend is bevestigd aan een middelste gedeelte van de achterpootstang (21), een overbrengingsorgaan (6) dat scharnierend is bevestigd tussen het glijorgaan (4) en het bovenste deel van de achterpootstang (21), waarbij het bovenste einde van de voorpootstang (11) scharnierend is bevestigd aan het onderste einde van het overbrengingsorgaan (6) en/of het bovenste einde van de voorpootstang (21); en een elastisch orgaan (7), waarbij het elastisch orgaan (7) is geassocieerd met, in het bijzonder verschaft tussen, de voorpootstang (11) en de achterpootstang (21) zodanig dat wanneer het buggyframe inklapt, de voorpootstang (11) en de achterpootstang (21) automatisch dicht tegen elkaar worden gebracht onder de elastische trekkracht van het elastisch of (7) waarbij het automatisch inklappen wordt voltooid.An automatically folding buggy frame, characterized in that it comprises: a front leg set (1), the front leg set (1) comprising a front leg rod (11); a hind leg set (2), the hind leg set (2) comprising a hind leg rod (21); a hand bar set (3), the hand bar set (3) comprising a bottom hand bar tube (31) and a U-shaped top hand bar tube (32) rotatably provided at an upper end of the bottom hand bar tube (31), the bottom hand bar tube (31 ) includes a slider (4) slidable along the axial direction of the lower hand bar tube, a locking assembly (5) provided between the lower hand bar tube (31) and the slider (4) for locking or unlocking the glider (4), the lower end of the lower hand bar tube (31) being hingedly attached to a middle portion of the rear leg stem (21), a transmission member (6) hinged between the slider (4) and the upper portion of the the hindlimb rod (21), the upper end of the forelimb rod (11) being hinged to the lower end of the transmission member (6) and / or the upper end of the forelimb rod (21); and an elastic member (7), the elastic member (7) being associated with, in particular provided between, the front leg bar (11) and the rear leg bar (21) such that when the buggy frame collapses, the front leg bar (11) and the hind leg bar (21) should be automatically brought close together under the elastic tensile force of the elastic or (7) completing the automatic folding. 2. Automatisch inklapbaar buggyframe volgens conclusie 1, met het kenmerk dat deze verder een zittingset (8) omvat, waarbij het voorste gedeelte van de zittingset (8) scharnierend is bevestigd aan een middelste gedeelte van de voorpootstang (11), waarbij het achterste einde van de zittingset (8) scharnierend is bevestigd aan het onderste einde van de onderste handstangbuis (31), in het bijzonder via een verbindingsbasis (33), en waarbij het voorste einde van het elastisch orgaan (7) is bevestigd aan het voorste gedeelte van de zittingset (8), in het bijzonder is bevestigd aan een voorste gedeelte of aan een middelste gedeelte van de zittingset.The automatically folding buggy frame according to claim 1, characterized in that it further comprises a seat set (8), the front part of the seat set (8) being hinged to a middle part of the front leg (11), the rear end of which of the seat set (8) is hinged to the lower end of the lower hand bar tube (31), in particular via a connecting base (33), and the front end of the elastic member (7) being attached to the front portion of the seat set (8), in particular, is attached to a front section or a middle section of the seat set. 3. Automatisch inklapbaar buggyframe volgens conclusie 1 of 2, met het kenmerk dat de verbindingsbasis (33) is verbonden met het onderste einde van de onderste handstang bij (31) die scharnierend is bevestigd aan het middelste gedeelte van de achterpootstang (12).The automatically folding buggy frame according to claim 1 or 2, characterized in that the connecting base (33) is connected to the lower end of the lower hand bar at (31) which is hinged to the middle section of the rear leg bar (12). -16 --16 - 4. Automatisch inklapbaar frame volgens conclusie drie, met het kenmerk dat deze verder een rugsteun-set (9) omvat, waarbij de rugsteun-set (9) een U-vormige rug steunstang (91) omvat, waarbij het einde van de rugsteunstang (21) scharnierend is bevestigd met de verbindingsbasis (33).The automatically folding frame according to claim three, characterized in that it further comprises a back support set (9), the back support set (9) comprising a U-shaped back support bar (91), the end of the back support bar ( 21) is hinged to the connecting base (33). 5. Automatisch inklapbaar buggyframe volgens conclusie 3 of 4, met het kenmerk dat het achterste einde van het elastisch of aan (7) is verbonden met de verbindingsbasis (33) of direct is bevestigd aan de achterpootstang (12).The automatically folding buggy frame according to claim 3 or 4, characterized in that the rear end of the elastic or on (7) is connected to the connecting base (33) or is directly attached to the rear leg bar (12). 6. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, met het kenmerk dat het vergrendelsamenstel (5) een vergrendelpen (51) omvat die is verschaft in de onderste handstangbuis (31) en een vergrendelen gehad (52) dat is verschaft in het glijorgaan (4), en waarbij de vergrendelpen (51) de onderste handstangbuis (31) kan penetreren en elastisch kan aangrijpen op het vergrendelgat (52).Automatically folding buggy frame according to any one of the preceding claims, characterized in that the locking assembly (5) comprises a locking pin (51) provided in the lower hand bar tube (31) and provided with a locking (52) provided in the slider. (4), and wherein the locking pin (51) can penetrate the lower hand bar tube (31) and elastically engage the locking hole (52). 7. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, met het kenmerk dat een rotatiebasis (34) is verschaft tussen de onderste handstangbuis (31) en de bovenste handstangbuis (32), en een verbindingsorgaan, in het bijzonder een trekkoord (57), is aangebracht tussen de rotatiebasis (34) en de vergrendelpen (51).Automatically folding buggy frame according to any one of the preceding claims, characterized in that a rotation base (34) is provided between the lower hand bar tube (31) and the top hand bar tube (32), and a connector, in particular a pull cord (57) , is disposed between the rotation base (34) and the locking pin (51). 8. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, met het kenmerk dat de bovenste handstangbuis (32) is voorzien van een ontgrendelorgaan (10) voor het ontgrendelen of vergrendelen van de bovenste handstangbuis (32) zodat deze geroteerd of vergrendelbaar is ten opzichte van de onderste handstangbuis (31).The automatically folding buggy frame according to any of the preceding claims, characterized in that the upper hand bar tube (32) is provided with an unlocking member (10) for unlocking or locking the upper hand bar tube (32) so that it is rotated or lockable relative to of the lower manual tube (31). 9. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, met het kenmerk dat het bovenste einde van de voorpootstang (11) het onderste einde van het overbrengingsorgaan (6) en het bovenste einde van de achterpootstang (21) coaxiaal scharnierend zijn.Automatically folding buggy frame according to any one of the preceding claims, characterized in that the upper end of the front leg bar (11), the bottom end of the transmission member (6) and the top end of the rear leg bar (21) are hinged coaxially. 10. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, met het kenmerk dat het bovenste einde van de voorpootstang (11) scharnierend is bevestigd aan het bovenste einde van de achterpootstang {21) en niet scharnierend is bevestigd aan het onderste einde van het overbrengingsorgaan (6).Automatically folding buggy frame according to any one of the preceding claims, characterized in that the upper end of the forelimb rod (11) is hingedly attached to the upper end of the hindlock rod (21) and is not hingedly attached to the lower end of the transmission member (6). 11. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies 1-9, met het kenmerk dat het bovenste einde van de voorpootstang (11) scharnierend is bevestigd aan het onderste einde van het overbrengingsorgaan (6) en niet scharnierend is bevestigd aan het bovenste einde van de achterpootstang (21).Automatically folding buggy frame according to any one of the preceding claims 1-9, characterized in that the upper end of the front leg rod (11) is hingedly attached to the lower end of the transmission member (6) and is hingedly attached to the upper end of the rear leg bar (21). -17 --17 - 12. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies 1-9, met het kenmerk dat het elastisch ook aan (7) een veer of een rubber band is.Automatically folding buggy frame according to any one of the preceding claims 1-9, characterized in that the elastic on (7) is also a spring or a rubber band. 13. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij de U-vormige bovenste handstangbuis is ingericht om in een voorwaartse richting te roteren ten opzichte van de onderste handstangbuis, in het bijzonder over een hoek van meer dan 150°, teneinde het automatisch inklapbaar buggyframe in te klappen.The automatically folding buggy frame according to any of the preceding claims, wherein the U-shaped upper hand bar tube is arranged to rotate in a forward direction relative to the lower hand bar tube, in particular through an angle of more than 150 °, to automatically folding folding buggy frame. 14. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij in de ingeklapte toestand het automatisch inklapbaar buggyframe rechtop kan staan.The automatically folding buggy frame according to any one of the preceding claims, wherein the automatically folding buggy frame can stand upright in the folded state. 15. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij in de ingeklapte toestand het buggyframe op zijn 4 wielen kan staan, waarbij de voorpootstang en de achterpootstang zich in wezen in opwaartse richting uitstrekken, meer in het bijzonder in een in hoofdzaak opwaartse richting, vanuit respectievelijk het voorwiel en het achterwiel wanneer het voorwiel en het achterwiel in contact zijn met de grond.The automatically collapsible buggy frame according to any one of the preceding claims, wherein in the collapsed condition the buggy frame can stand on its 4 wheels, the front leg bar and the rear leg bar extending essentially in an upward direction, more particularly in a substantially upward direction , from the front wheel and rear wheel, respectively, when the front wheel and the rear wheel are in contact with the ground. 18. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij gezien in zijaanzicht gedurende en na de inklapbeweging het zwaartepunt van het automatisch inklapbare buggyframe in wezen tussen het voorwiel en het achterwiel blijft, en het mogelijk maakt voor het automatisch inklapbare buggyframe om in te klappen naar de ingeklapte toestand en intussen rechtop te staan en rechtop te blijven nadat de ingeklapte toestand is bereikt.The automatically folding buggy frame according to any one of the preceding claims, wherein, viewed in side view during and after the folding movement, the center of gravity of the automatically folding buggy frame remains essentially between the front wheel and the rear wheel, and makes it possible for the automatically folding buggy frame to fold to the collapsed state while standing upright and remaining upright after the collapsed state is reached. 17. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij gedurende het inklappen de voorwielen en de achterwielen in contact blijven met de grond en het automatisch inklapbare buggyframe rechtop blijft.The automatically folding buggy frame according to any one of the preceding claims, wherein the front wheels and the rear wheels remain in contact with the ground during folding and the automatically folding buggy frame remains upright. 18. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij in de ingeklapte toestand in zijaanzicht een eerste afstand (74) tussen de voorwiel-as (61) en de verbindingsbasis (33) hetzelfde is of in wezen hetzelfde is als een tweede afstand (75) tussen de achterwiel-as (83) en de verbindingsbasis (33).The automatically folding buggy frame according to any one of the preceding claims, wherein in the collapsed state in side view a first distance (74) between the front wheel axle (61) and the connecting base (33) is the same or substantially the same as a second distance (75) between the rear wheel axle (83) and the connecting base (33). 19. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij de eerste afstand (74) meer dan 90% en minder dan 110% is van de tweede afstand (75), waarbij meer in het bijzonder de eerste afstand (74) meer dan 95% en minder dan 105% is van de tweede afstand (75).The automatically folding buggy frame according to any of the preceding claims, wherein the first distance (74) is more than 90% and less than 110% of the second distance (75), more particularly the first distance (74) being more than 95% and less than 105% is from the second distance (75). 4040 -18 --18 - 20. Automatisch inklappen waar buggyframe volgens een van de voorgaande conclusies, waarbij gezien in zijaanzicht een eerste afstand, gemeten vanaf het scharnier tussen de voorpootstang en de achterpootstang tot aan een rotatie-as van de voorwielen ten minste 90%, meer in het bijzonder ten minste 95% is van een tweede afstand gemeten van het scharnier tussen de voorpootstang en de achterpootstang naar een rotatie-as van de achterwielen.Automatic folding true buggy frame according to any one of the preceding claims, wherein, viewed in side view, a first distance, measured from the hinge between the front leg rod and the rear leg rod to a rotation axis of the front wheels, is at least 90%, more in particular at least 95% is measured from a second distance from the hinge between the front leg bar and the rear leg bar to a rotation axis of the rear wheels. 21. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij in de ingeklapte toestand, gezien in zijaanzicht, de rotatiebasis (34) zich bevindt bij de achterwielen en de U-vormige bovenste handstangbuis (32) in een opwaartse richting uitsteekt vanaf de rotatiebasis.The automatically folding buggy frame according to any one of the preceding claims, wherein in the collapsed state, viewed in side view, the rotation base (34) is located at the rear wheels and the U-shaped upper hand bar tube (32) protrudes upwardly from the rotation base . 22. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij in de ingeklapte toestand, gezien in zijaanzicht, de U-vormige bovenste handstangbuis (32) zich bevindt aan een tegenovergelegen zijde van de onderste handstangbuis als de achterpootstang en toegankelijk is voor een gebruiker zonder enige obstakels teneinde naar boven en naar buiten te worden getrokken door de gebruiker, waarbij het buggyframe wordt uitgevouwen.The auto-folding buggy frame according to any of the preceding claims, wherein in the collapsed state, viewed in side view, the U-shaped upper hand bar tube (32) is located on an opposite side of the lower hand bar tube as the rear leg bar and is accessible to a user without any obstacles in order to be pulled up and out by the user, with the buggy frame being unfolded. 23. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij het glijorgaan (44) dat is verschaft op de onderste handstangbuis (31) het enige glijorgaan van het automatisch inklapbare buggyframe is.The automatically folding buggy frame according to any of the preceding claims, wherein the sliding member (44) provided on the lower hand bar tube (31) is the sole sliding member of the automatically folding buggy frame. 24. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij er geen glijorgaan is tussen de onderste handstangbuis (31) en de achterpootstang (21).The automatically folding buggy frame according to any of the preceding claims, wherein there is no sliding member between the lower hand bar tube (31) and the rear leg bar (21). 25. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, verder omvattende een linker connector (70A) voor een linker einde van een voorste armsteun en een rechte connector (70B) voor een rechter einde van de voorste armsteun, waarbij de linker en rechter connector zijn verschaft bij het einde van de achterpootstang.The automatic folding buggy frame according to any of the preceding claims, further comprising a left connector (70A) for a left end of a front armrest and a straight connector (70B) for a right end of the front armrest, the left and right connectors are provided at the end of the hindlimb bar. 26. Automatisch inklapbaar buggyframe volgens conclusie 25, waarbij de linker en rechterconnector gefixeerd zijn aan het bovenste einde van de achterpootstang.The automatically folding buggy frame according to claim 25, wherein the left and right connectors are fixed at the top end of the hind leg bar. 27. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij de linker connector en de rechte connector zich bevinden bij respectievelijk het linker en rechterscharnier (66).The automatically folding buggy frame according to any of the preceding claims, wherein the left connector and the straight connector are located at the left and right hinge (66), respectively. -19--19- 28. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij de verbindingsbasis (33) een uitstekend gedeelte (72) omvat dat in de uitgeklapte toestand naar voren uitsteekt en in de ingeklapte toestand naar achteren uitsteekt, en waarbij de zittingset (8) is verbonden met dit uitstekende gedeelte van de verbindingsbasis.The automatically folding buggy frame according to any of the preceding claims, wherein the connecting base (33) comprises a protruding portion (72) protruding forward in the folded-out state and protruding backwards in the collapsed state, and wherein the seat set (8) is connected to this projecting portion of the connecting base. 29. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij een zitting scharnier (77) waarbij de zitting is bevestigd aan de verbindingsbasis (33) zich bevindt op een afstand (88) van een onderste handstang scharnier (78) waar de onderste handstangbuis (31) is verbonden met de achterpoot (12).The auto-folding buggy frame according to any of the preceding claims, wherein a seat hinge (77) with the seat attached to the connecting base (33) is located at a distance (88) from a lower hand bar hinge (78) where the lower hand bar tube (31) is connected to the hind leg (12). 30. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij gedurende de inklappende beweging, het uitstekende gedeelte (72) het zittingsgedeelte naar achteren trekt, waarbij de voorpootstang naar de achterpootstang wordt toegetrokken.The automatically folding buggy frame according to any of the preceding claims, wherein during the folding movement, the protruding portion (72) pulls the seat portion backward, pulling the front leg bar towards the rear leg bar. 31. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij de achterpootstang geen lokale bochten heeft.An automatically folding buggy frame according to any one of the preceding claims, wherein the hind leg bar has no local curves. 32. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij een lengte van de voorpootstang (11) inclusief een zwenken Will (85) in hoofdzaak hetzelfde is als een lengte van de achterpootstang (21) meer in het bijzonder meer dan 95% van lengte van de achterpootstang (21).The automatically folding buggy frame according to any of the preceding claims, wherein a length of the front leg bar (11) including a pivoting Will (85) is substantially the same as a length of the rear leg bar (21) more in particular more than 95% of length of the rear leg bar (21). 33. Automatisch inklappen waar buggyframe volgens een van de voorgaande conclusies, waarbij in de ingeklapte toestand, gezien in zijaanzicht, het voorwiel en achterwiel overlappen.33. Automatic folding true buggy frame according to any one of the preceding claims, wherein in the folded state, seen in side view, the front wheel and rear wheel overlap. 34. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij gezien in zijaanzicht in de ingeklapte toestand een wielbasis-as (80) zich door de voorwiel-as (61) en door de achterwiel-as (63) heen uitstrekt en waarbij een lijn (81) die zich door de voorwiel-as (61) en het verbindingsorgaan (33) heen uitstrekt zich onder een hoek (a) van meer dan 75° ten opzichte van de wielbasis-as (80) uitstrekt, in het bijzonder meer dan 80°.An automatically folding buggy frame according to any one of the preceding claims, wherein, viewed in side view in the collapsed state, a wheelbase axle (80) extends through the front wheel axle (61) and through the rear wheel axle (63) and wherein a line (81) extending through the front wheel axle (61) and the connector (33) extends at an angle (a) of more than 75 ° to the wheelbase axle (80), in particular more than 80 °. 35. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij gezien in zijaanzicht in de ingeklapte toestand de wielbasis-as (80) zich door de voorwiel-as (61) en de achterwiel-as (63) uitstrekt en waarbij een lijn (82) die zich door de achterwiel-as (63) en het verbindingsorgaan (33) heen uitstrekt zich onder een hoekThe automatically folding buggy frame according to any of the preceding claims, wherein, viewed in side view in the collapsed state, the wheelbase axle (80) extends through the front wheel axle (61) and the rear wheel axle (63) and wherein a line ( 82) extending through the rear wheel axle (63) and the connector (33) at an angle -20- (B) van meer dan 75° ten opzichte van de wielbasis-as (80) uitstrekt, in het bijzonder meer dan 80°.-20- (B) extends more than 75 ° relative to the wheelbase axle (80), in particular more than 80 °. 36. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij gezien in zijaanzicht in ingeklapte toestand een wielbasis-as (80) zich door de voorwiel-as (61 en de achterwiel-as (63 heen uitstrekt en waarbij een lijn (83) die zich door de voorwiel-as en het eerste scharnier (66) heen uitstrekt zich onder een hoek (y) van meer dan 75° ten opzichte van de wielbasis-as (80) uitstrekt, in het bijzonder meer dan 80 graden.The automatically folding buggy frame according to any of the preceding claims, wherein, viewed in side view when collapsed, a wheelbase axle (80) extends through the front wheel axle (61 and the rear wheel axle (63) and wherein a line (83) extending through the front wheel axle and the first hinge (66) extends at an angle (y) of more than 75 ° from the wheelbase axle (80), in particular more than 80 degrees. 37. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij de onderste handstangbuis (31) een lengte heeft die de rotatiebasis (34) heeft bij de grond positioneert, en de bijzondere op een afstand van de grond van minder dan 5 cm bij voorkeur minder dan 3 cm in de ingeklapte toestand, meer bij voorkeur in contact met de grond wanneer het ingeklapte buggyframe zich in de rechtopstaande positie bevindt.The auto-folding buggy frame according to any of the preceding claims, wherein the lower hand bar tube (31) has a length that has the rotation base (34) positions at the ground, and the particular one at a distance from the ground of less than 5 cm preferably less than 3 cm in the collapsed state, more preferably in contact with the ground when the collapsed buggy frame is in the upright position. 38. Automatisch inklapbaar buggyframe volgens een van de voorgaande conclusies, waarbij gezien in zijaanzicht gedurende en na de inklappende beweging het zwaartepunt tussen het voorwiel en de rotatiebasis blijft, in het bijzonder tussen het achterwiel en de rotatiebasis.The automatically folding buggy frame according to any of the preceding claims, wherein viewed in side view during and after the folding movement the center of gravity remains between the front wheel and the rotating base, in particular between the rear wheel and the rotating base.
NL2023365A 2018-06-22 2019-06-24 Automatically collapsible stroller frame NL2023365B1 (en)

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CN201810647800.0A CN108860280B (en) 2018-06-22 2018-06-22 Baby carriage frame capable of automatically folding
PCT/CN2018/094789 WO2019242048A1 (en) 2018-06-22 2018-07-06 Baby stroller frame capable of being automatically folded

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CN108860280B (en) 2020-12-01
CN108860280A (en) 2018-11-23
WO2019242778A1 (en) 2019-12-26
WO2019242048A1 (en) 2019-12-26

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