CN211519619U - Portable cart frame and baby carriage - Google Patents

Portable cart frame and baby carriage Download PDF

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Publication number
CN211519619U
CN211519619U CN201922365060.4U CN201922365060U CN211519619U CN 211519619 U CN211519619 U CN 211519619U CN 201922365060 U CN201922365060 U CN 201922365060U CN 211519619 U CN211519619 U CN 211519619U
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China
Prior art keywords
rod
foot
rods
front foot
shaft section
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CN201922365060.4U
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Chinese (zh)
Inventor
刘修平
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Unitron Enterprises Zhuhai Co ltd
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Unitron Enterprises Zhuhai Co ltd
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Priority to CN201922365060.4U priority Critical patent/CN211519619U/en
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Abstract

The present disclosure relates to a portable stroller frame and a stroller. Portable shallow frame includes: two front foot rods and two front wheel sets arranged at the lower ends of the two front foot rods; the rear leg rod and a rear wheel set are arranged at the lower end of the rear leg rod; the two first joints are fixedly connected with the rear foot rod and are respectively pivoted with the upper ends of the two front foot rods through two first pivots; the handle lower rod is rotationally connected with the rear foot rod; the handle upper rod is rotationally connected with the handle lower rod; and two ends of each transmission rod are respectively and rotatably connected with the front foot rod and the handle lower rod on the same side of the two front foot rods. When the handle upper rod is folded forwards relative to the handle lower rod, the handle lower rod can drive the two front foot rods to be folded towards the rear foot rod around the two first pivots respectively through the transmission rod, and the axes of the two first pivots are obliquely arranged relative to the horizontal plane, so that the distance between the two front wheel sets is gradually reduced in the process that the two front foot rods are folded towards the rear foot rod. The disclosed embodiments can be folded to smaller sizes.

Description

Portable cart frame and baby carriage
Technical Field
The present disclosure relates to a portable stroller frame and a stroller.
Background
To facilitate carrying of the infant away from home, people often use strollers to carry the infant. Due to the large size of the stroller, the stroller is typically designed to be collapsible for easy storage or transport. Some of the related art strollers may be folded, but the folded size is still difficult to store on a luggage rack of a public transportation vehicle such as an airplane, which causes inconvenience to a user who needs to expend efforts to handle the delivery procedure of the stroller.
Disclosure of Invention
In view of the above, the disclosed embodiments provide a portable stroller frame and a stroller that can be folded to a smaller size.
In one aspect of the present disclosure, there is provided a portable stroller frame comprising:
the front wheel set comprises two front foot rods and two front wheel sets arranged at the lower ends of the two front foot rods;
the rear leg rod and a rear wheel set are arranged at the lower end of the rear leg rod;
the two first joints are fixedly connected with the rear foot rod and are respectively pivoted with the upper ends of the two front foot rods through two first pivots;
the handle lower rod is rotationally connected with the rear foot rod;
the handle upper rod is rotationally connected with the handle lower rod; and
two ends of each transmission rod are respectively and rotatably connected with the front foot rod and the handle lower rod which are arranged on the same side of the two front foot rods;
when the handle upper rod is folded forwards relative to the handle lower rod, the handle lower rod can drive the two front foot rods to be folded towards the rear foot rod around the two first pivots respectively through the transmission rod, and the axes of the two first pivots are obliquely arranged relative to the horizontal plane, so that the distance between the two front wheel sets is gradually reduced in the process that the two front foot rods are folded towards the rear foot rod.
In some embodiments, the maximum width of the two front wheel sets in the frame folded state is greater than the maximum width of the rear foot bar, and the two front wheel sets in the frame folded state are located between the rear foot bar and the handlebar lower bar.
In some embodiments, the two first pivots are symmetrical with respect to a center plane between the two forefoot bars.
In some embodiments, the axes of the two first pivots are respectively perpendicular to the length direction of the same front foot bar of the two front foot bars.
In some embodiments, a fixing rod is further fixedly disposed on the end portion of the handle lower rod pivotally connected to the rear foot rod, the two transmission rods are rotatably connected to the handle lower rod through the fixing rod, and the fixing rod includes: two first poles and fixed connection are in second pole between two first poles, the equal slidable pin joint of a side end of two transfer lines is in on the second pole, another side end respectively through two first bending axle with two preceding foot bar pin joints, first bending axle includes axis misalignment and the first shaft section and the second shaft section that the tip links to each other, first shaft section passes preceding foot bar, just the axis of first shaft section with the length direction of preceding foot bar is perpendicular, the second shaft section with the transfer line pin joint, just the axis of second shaft section with the length direction of second pole is parallel, a side end of two transfer lines can two preceding foot bar orientation the folding process of back foot bar is followed the second pole slides in opposite directions.
In some embodiments, the fixed bar is configured to be in the same plane as the two transmission bars in the deployed state of the frame.
In some embodiments, the portable cart frame further comprises:
the lower ends of the two support rods are respectively pivoted with the two first joints through two second pivots, and the upper ends of the two support rods are rotatably connected with the handle upper rod;
the axes of the two second pivots are parallel to each other and are vertical to the length direction of the two supporting rods.
In some embodiments, the portable cart frame further comprises:
the first sliding sleeve is rotatably arranged on at least one of the two supporting rods;
one end of the seat fixing rod is pivoted on the handle lower rod, and the other end of the seat fixing rod penetrates through the first sliding sleeve and extends out of the front side of the frame;
the seat fixing rod can slide along the first sliding sleeve along with the relative movement of the two supporting rods and the handlebar lower rod.
In some embodiments, the portable cart frame further comprises:
the pedal assembly is connected between the two front foot rods through two second bending shafts respectively;
the second bending shafts comprise a third shaft section and a fourth shaft section, the axes of the third shaft section are not coincident, the end parts of the third shaft section and the fourth shaft section are connected, the third shaft section penetrates through the front foot rod, the axis of the third shaft section is perpendicular to the length direction of the front foot rod, the fourth shaft section is rotatably connected with the pedal assembly, and the axes of the fourth shaft sections of the two second bending shafts are coincident or parallel.
In some embodiments, the footrest assembly comprises:
a foot pedal;
the two second sliding sleeves are respectively fixedly connected with two ends of the pedal;
the two second sliding sleeves are respectively and rotatably sleeved on the fourth shaft sections of the two second bending shafts and can slide along the axis of the fourth shaft sections.
In some embodiments, the foot pedal is pivotally connected to the ends of the two drive links adjacent the two front foot bars, respectively.
In one aspect of the present disclosure, there is provided a stroller including: the portable cart frame is provided.
Therefore, according to the embodiment of the disclosure, the first joint fixedly connected with the rear foot bar is pivoted with the front foot bar through the two inclined first pivots, and the front foot bar and the handle lower bar are connected through the two transmission rods, so that when an operator folds the handle upper bar forwards relative to the handle lower bar, the operator can drive the front foot bar to fold towards one side of the rear foot bar synchronously through the transmission rods, and meanwhile, the distance between the two front wheel sets is gradually reduced along with the swinging of the front foot bar around the inclined first pivots, so that the front foot bar can be folded into a smaller size, and the user can be facilitated to a greater extent.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.
The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:
fig. 1 and 2 are schematic structural views from a lateral perspective and a perspective, respectively, of some embodiments of a portable cart frame according to the present disclosure in a frame-deployed state;
FIGS. 3 and 4 are schematic side and perspective views, respectively, of a frame of a portable stroller during folding of the frame according to some embodiments of the present disclosure;
fig. 5-7 are schematic structural views of a side view, a perspective view and a forward view, respectively, of some embodiments of a portable stroller frame according to the present disclosure in a frame folded state;
fig. 8 and 9 are respective partial schematic structural views of a portable stroller frame using a bending axle according to some embodiments of the present disclosure.
It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
As shown in fig. 1 and 2, there are schematic structural views from a lateral perspective and a perspective, respectively, of some embodiments of a portable stroller frame according to the present disclosure in a frame-deployed state. Referring to fig. 1 and 2, in conjunction with the schematic structural illustrations of the frame folding process and frame folding state shown in fig. 3-7, in some embodiments, a portable stroller frame comprises: two front foot bars 1, two front wheel sets 2, a rear foot bar 3, a rear wheel set 4, two first joints 9, a handle lower bar 6, a handle upper bar 5 and two transmission bars 10. Two front wheel sets 2 are arranged at the lower ends of the two front foot rods 1. The rear wheel set 4 is arranged at the lower end of the rear foot rod 3. The two front and rear wheel sets 2, 4 may form a stable ground support structure in the frame deployed state. The "front" and "rear" herein refer to the front side and the rear side based on the body of the user when the user pushes the portable cart frame in the unfolded state. The lower part is the side of the portable cart frame, which is supported at the bottom and takes the portable cart frame as the reference in the frame unfolding state, and the upper part is the side of the portable cart frame, which is far away from the bottom and takes the portable cart frame as the reference in the frame unfolding state.
The handle lower rod 6 is rotatably connected to the rear foot rod 3 (see the pivot shaft 24 in fig. 1), and the handle upper rod 5 is rotatably connected to the handle lower rod 6 (see the pivot shaft 21 in fig. 1). Referring to fig. 7, in some embodiments, the rear foot bar 3 may include a U-shaped frame 32 and two arc-shaped struts 31 fixedly connected to the bottom of the U-shaped frame 32, respectively, and the two arc-shaped struts 31 are connected to the two rear wheel sets 4. The arc shapes of the two arc struts 31 may be convex toward each other so that the arc concave sides of the two arc struts 31 form a space for accommodating the front wheel set with other parts of the frame in the folded state of the frame. The two first joints 9 are fixedly connected with the hind foot bar 3. In some embodiments, the first joint 9 may also be made integral with the hindfoot bar 3.
The two first joints 9 are respectively pivoted with the upper ends of the two front foot rods 1 through two first pivot shafts 26. Two ends of each transmission rod 10 of the two transmission rods 10 are respectively and rotatably connected with the front foot rod 1 and the handle lower rod 6 on the same side of the two front foot rods 1. With reference to fig. 1, 3 and 5, when the handle upper bar 5 is folded forward relative to the handle lower bar 6, the handle lower bar 6 can bring the two front foot bars 1 to fold about the two first pivots 26 toward the rear foot bar 3 via the transmission bar 10.
In some embodiments, the axes of the two first pivots 26 are arranged obliquely with respect to the horizontal plane, so that the distance between the two front wheel sets 2 decreases gradually during the folding of the two front legs 1 towards the rear leg 3.
The designer can design the inclination angle of the axis of the first pivot 26 with respect to the horizontal plane so that the maximum width of the two front wheel sets 2 in the frame unfolded state is greater than the maximum width of the rear foot bar 3 to obtain a more stable supporting effect, and between the rear foot bar 3 and the handlebar lower bar 6 in the frame folded state to avoid interference with other parts of the frame while reducing the folded size.
In some embodiments, the two first pivots 26 may be made symmetrical with respect to a central plane between the two forefoot bars 1. On the one hand, the frame can be more stable in the unfolded state of the frame and more regular after being folded. In other embodiments, the two first pivots 26 may be asymmetrical with respect to a central plane between the two forefoot bars 1.
In order to optimize the force of the first joint, the axes of the two first pivots 26 are preferably perpendicular to the length direction of the forefoot rod 1 on the same side of the two forefoot rods 1, so that the force of the forefoot rod 1 on the first pivots 26 is more uniform.
Referring to fig. 2 and 4, in some embodiments, in order to optimize the frame structure, a fixing rod is further fixed to the end of the handlebar lower rod 6 pivoted to the rear foot bar 3, and the two transmission rods 10 are rotatably connected to the handlebar lower rod 6 through the fixing rod. In fig. 2, the fixed bar is arranged in the unfolded state of the frame in the same plane as the two driving bars 10. In other embodiments, the fixed bar is located in a different plane than the two transfer bars 10 in the deployed condition of the frame.
In fig. 2, the fixing bar includes two first bars 11 and a second bar 12 fixedly connected between the two first bars 11. One side end parts of the two transmission rods 10 are slidably pivoted on the second rod 12, and the other side end parts are respectively pivoted with the two front foot rods 1 through two first bending shafts 25.
Referring to fig. 8 and 9, in some embodiments, the first bending axle 25 includes first and second axle segments that are non-coincident in axis and joined at their ends. The first shaft section penetrates through the front foot rod 1, and the axis of the first shaft section is perpendicular to the length direction of the front foot rod 1. The second shaft section is pivoted with the transmission rod 10, and the axis of the second shaft section is parallel to the length direction of the second rod 12. Such that the first shaft section rotates relative to the front leg bar 1 and the second shaft section changes its inclination direction in accordance with the rotation of the first shaft section, and
during the folding of the front leg 1 towards the rear leg 3, the front leg 1 is pivoted about the first pivot 26, the first shaft section can be pivoted about the front leg 1, the second shaft section can change the inclination of the second shaft section relative to the front leg 1 as the first shaft section is pivoted, the two transmission levers 10 can be pivoted about the second shaft section, so that the transmission levers 10 are pivoted as the front leg 1 is pivoted about the first pivot 26, and the pivot axis can be changed adaptively as the front leg 1 is pivoted. Due to the inclination of the first pivot 26, the two front foot bars 1 will move closer to each other, so that the ends of the two transmission bars 10 connecting the two front foot bars will also move closer to each other, and the ends of the two transmission bars 10 away from the front foot bars will slide along the second bar 12.
Referring to fig. 1-7, in some embodiments, the portable cart frame further comprises: two support bars 7. The lower ends of the two support rods 7 are respectively pivoted with the two first joints 9 through two second pivot shafts 27, and the upper ends are rotatably connected with the handle upper rod 5. The first joint 9 may be configured like a T-shape or a Y-shape, two of its three ends being pivotally connected to the support bar 7 and the front foot bar 1, respectively, and the other being fixedly connected to the rear foot bar.
The axes of the two second pivots 27 are parallel to each other and perpendicular to the length direction of the two support rods 7. Thus, when the upper handle bar 5 is folded relative to the lower handle bar 6, the two support bars 7 can rotate around the second pivot 27 on the first joint 9 along with the rotation of the upper handle bar 5, and the stable triangular support structure formed by the reference numerals 22, 27 and 24 in fig. 1 is gradually changed into the quadrangular support structure formed by the reference numerals 22, 21, 27 and 24 in fig. 3, which can be flexibly folded into the folding structure shown in fig. 5 with smaller size.
Referring to fig. 2 and 4, in some embodiments, the portable cart frame further comprises: a first sliding sleeve 33 and a seat-securing lever 8. The first sliding sleeve 33 is rotatably (with reference to the pivot shaft 28 in fig. 1) provided on at least one of the two support bars 7. One end of the seat fixing rod 8 is pivoted (referring to the pivot shaft 23 in fig. 1) on the handle lower rod 6, and the other end passes through the first sliding bush 33 and extends toward the front side of the frame. The seat fixing lever 8 may be used to mount a seat on which an infant sits. The seat fixing rod 8 can slide along the first sliding bush 33 along with the relative movement of the two support rods 7 and the handlebar lower rod 6. Through the guiding and limiting effects of the first sliding sleeve 33, the seat fixing rod 8 can reduce the included angle between the seat fixing rod 8 and the supporting rod 7 and the handle lower rod 6 in the process of folding the frame, and the seat fixing rod 8 is prevented from protruding outwards or needing to be manually folded after the frame is folded.
Referring to fig. 2, 4, 7-9, in some embodiments, the portable cart frame further includes a footrest assembly. The footboard assemblies are connected between the two front foot bars 1 by two second bending shafts 30, respectively, and the footboard assemblies can provide a footrest support for the infant when the infant is seated on the stroller.
In fig. 8, the second bending axle 30 includes a third axle segment and a fourth axle segment that are non-coincident in axis and joined at their ends. The third shaft section passes through the front foot rod 1, the axis of the third shaft section is perpendicular to the length direction of the front foot rod 1, the fourth shaft section is rotatably connected with the pedal assembly, and the axes of the fourth shaft sections of the two second bending shafts 30 are coincident or parallel. In some embodiments, the axis of the fourth shaft section is preferably parallel to the horizontal plane. During the folding process of the bicycle frame, the pedal assembly can still change the angle around the axis parallel to the horizontal plane when the front foot rods are mutually closed.
Referring to fig. 6 and 9, in some embodiments, the footrest assembly comprises: a foot pedal 13 and two second runners 14. The two second sliding sleeves 14 are respectively fixedly connected with two ends of the pedal 13. The two second sliding sleeves 14 are respectively rotatably sleeved on the fourth shaft sections of the two second bending shafts 30, and can slide along the axis of the fourth shaft sections. Thus, the pedals can not interfere with the mutual approach of the front foot rods when the frame is folded.
Referring to fig. 8 and 9, in some embodiments, a foot pedal 13 is pivotally connected to the ends of the two transmission levers 10 adjacent to the two front foot bars 1, respectively. Therefore, the pedal 13 can be driven by the transmission rod 10 to turn when the transmission rod 10 rotates, so that the pedal 13 is prevented from being excessively protruded relative to the folded frame, and the trouble of manually adjusting the turning angle of the pedal 13 by an operator is also avoided.
The various embodiments of the portable stroller frame described above of the present disclosure can be applied to various types of strollers, such as luggage strollers or strollers. The portable cart frame is folded into a smaller size, is convenient to store, and is placed on a luggage rack of a public carrier such as an airplane and the like during traveling, so that the consignment procedure is omitted, and great convenience is brought to users. Accordingly, the present disclosure also provides a stroller including any of the embodiments of the portable stroller frame described above.
The operation of the embodiment of the portable cart frame of the present disclosure will be described with reference to fig. 1 to 9.
The lower end of the handle lower rod 6 is supported on the back foot rod 3, and the two ends of the support rod 7 are respectively pivoted with the handle upper rod 5 and a first joint 9 fixedly connected with the back foot rod 3. A seat fixing rod 8 is arranged between the handle lower rod 6 and the supporting rod 7, one end of the seat fixing rod 8 is pivoted with the handle lower rod 6, and the other end of the seat fixing rod passes through a first sliding sleeve 33 which is rotatably arranged on the supporting rod 7. A fixed rod and a transmission rod 10 are further arranged between the front foot rod 1 and the handle lower rod 6, a first rod 11 of the fixed rod is fixedly connected with the handle lower rod 6, one end of the transmission rod 10 is rotatably connected with the front foot rod 1, and the other end of the transmission rod is rotatably and axially slidably connected with a second rod 12 of the fixed rod. The foot pedal 13 is rotatably and axially slidably connected with the front foot bar 1 by a second sliding sleeve 14.
In the unfolded state of the frame shown in fig. 1 and 2, the upper handle bar 5 and the lower handle bar 6 are unfolded on the same straight line, and the transmission lever 10 and the fixing lever are unfolded on the same plane. At this time, the two front wheelsets 2 are positioned outside the two rear wheelsets 4 in the left-right direction, and are in an outstretched state. The foot board 13 is located between the two front foot bars 1 to provide a foot supporting function.
When the bicycle frame needs to be folded, a user can push the handle upper rod 5 forwards after unlocking the locking structure between the handle upper rod 5 and the handle lower rod 6, so that the handle upper rod 5 rotates forwards to reduce the included angle between the handle upper rod 5 and the handle lower rod 6. Referring to fig. 3 and 4, the lower handle bar 6 is correspondingly rotated toward the rear leg bar 3, so as to reduce the angle between the lower handle bar 6 and the rear leg bar 3. And with the rotation of the lower handle rod 6, the fixed rod drives the transmission rod 10 to rotate, and an included angle is formed between the plane of the fixed rod and the plane of the transmission rod 10.
The transmission rod 10 drives the front leg rod 1 to rotate towards the rear leg rod 3, so that the front leg rod 1, the handle lower rod 6 and the support rod 7 all rotate towards the rear leg rod 3, and a folding shape with a reduced size is formed in a direction perpendicular to the rear leg rod 3. At this time, the seat fixing lever 8 rotates relative to the handle lower lever 6 and slides relative to the first sliding bush 33 as the position of the support lever 7 between the handle lower levers 6 changes. The front wheel sets 2 gradually come close to each other based on the inclined first pivot during the rotation of the front foot bar 1. Referring to fig. 8 and 9, the embodiment of the transmission rod 10 pivotally connected to the footrest 13 also causes the footrest 13 to turn when the transmission rod 10 rotates.
Folding continues on the basis of fig. 3 and 4 until the frame is folded as shown in fig. 5-7. At this time, the front leg bar 1 and the front wheel set 2 are folded between the rear leg bar 4 and the handlebar lower bar 6, and the front wheel set 2 is inserted into a space formed between the rear leg bar 4 and the support bar 7. The foot pedal 13 is pivoted by the drive rod 10 to a position parallel or approximately parallel to the plane of the two front foot bars.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (12)

1. A portable cart frame, comprising:
the front wheel assembly comprises two front foot rods (1) and two front wheel sets (2) arranged at the lower ends of the two front foot rods (1);
the rear leg rod (3) and a rear wheel set (4) arranged at the lower end of the rear leg rod (3);
the two first joints (9) are fixedly connected with the rear foot rod (3), and the two first joints (9) are respectively pivoted with the upper ends of the two front foot rods (1) through two first pivots (26);
the handle lower rod (6) is rotationally connected with the rear foot rod (3);
the handle upper rod (5) is rotationally connected with the handle lower rod (6); and
two ends of each transmission rod (10) are respectively and rotatably connected with the front foot rod (1) and the handle lower rod (6) on the same side of the two front foot rods (1);
when the handle upper rod (5) is folded forwards relative to the handle lower rod (6), the handle lower rod (6) can drive the two front foot rods (1) to be folded towards the rear foot rod (3) around the two first pivots (26) through the transmission rod (10), and axes of the two first pivots (26) are obliquely arranged relative to a horizontal plane, so that the distance between the two front wheel sets (2) is gradually reduced in the process that the two front foot rods (1) are folded towards the rear foot rod (3).
2. Portable stroller frame according to claim 1, characterized in that the maximum width of the two front wheel sets (2) in the frame folded state is larger than the maximum width of the rear foot bar (3) and in the frame folded state is located between the rear foot bar (3) and the handlebar lower bar (6).
3. Portable stroller frame according to claim 1, characterized in that said two first pivots (26) are symmetrical with respect to a central plane between said two front foot bars (1).
4. Portable stroller frame according to claim 1, characterized in that the axes of the two first pivots (26) are perpendicular to the length direction of the same one of the two front foot bars (1).
5. The frame of portable stroller according to claim 4, wherein a fixing rod is further fixed to the end of the handle lower bar (6) pivotally connected to the rear foot bar (3), and the two transmission rods (10) are rotatably connected to the handle lower bar (6) through the fixing rod, and the fixing rod comprises: two first bars (11) and a second bar (12) fixedly connected between the two first bars (11), one end parts of the two transmission rods (10) are respectively pivoted on the second rod (12) in a sliding way, the other end parts are respectively pivoted with the two front foot rods (1) through two first bending shafts (25), the first bending shaft (25) comprises a first shaft section and a second shaft section which are not coincident in axial line and connected at the ends, the first shaft section passes through the front foot rod (1), the axial line of the first shaft section is vertical to the length direction of the front foot rod (1), the second shaft section is pivoted with the transmission rod (10), and the axis of the second shaft section is parallel to the length direction of the second rod (12), and one side end parts of the two transmission rods (10) can slide along the second rod (12) in opposite directions in the process that the two front foot rods (1) are folded towards the rear foot rod (3).
6. Portable stroller frame according to claim 5, characterized in that said fixing bar is configured to be in the same plane as said two transmission bars (10) in the unfolded frame state.
7. The portable cart frame of claim 1, further comprising:
the lower ends of the two support rods (7) are respectively pivoted with the two first joints (9) through two second pivots (27), and the upper ends of the two support rods are rotatably connected with the handle upper rod (5);
wherein the axes of the two second pivots (27) are parallel to each other and perpendicular to the length direction of the two support rods (7).
8. The portable cart frame of claim 7, further comprising:
a first sliding sleeve (33) rotatably arranged on at least one of the two support rods (7);
a seat fixing rod (8), one end of which is pivoted on the handle lower rod (6), and the other end of which passes through the first sliding sleeve (33) and extends out of the front side of the frame;
the seat fixing rod (8) can slide along the first sliding sleeve (33) along with the relative movement of the two supporting rods (7) and the handlebar lower rod (6).
9. The portable cart frame of claim 1, further comprising:
the pedal assembly is connected between the two front foot rods (1) through two second bending shafts (30) respectively;
the second bending shafts (30) comprise a third shaft section and a fourth shaft section, the axes of the third shaft section are not coincident, the ends of the third shaft section are connected with the ends of the fourth shaft section, the third shaft section penetrates through the front foot rod (1), the axis of the third shaft section is perpendicular to the length direction of the front foot rod (1), the fourth shaft section is rotatably connected with the pedal assembly, and the axes of the fourth shaft sections of the two second bending shafts (30) are coincident or parallel.
10. The portable cart frame of claim 9, wherein said foot pedal assembly comprises:
a foot board (13);
the two second sliding sleeves (14) are respectively and fixedly connected with two ends of the pedal (13);
the two second sliding sleeves (14) are respectively and rotatably sleeved on the fourth shaft sections of the two second bending shafts (30) and can slide along the axis of the fourth shaft sections.
11. Portable stroller frame according to claim 9, characterized in that said footboard (13) is pivoted to the ends of said two transmission bars (10) respectively adjacent to said two front foot bars (1).
12. A stroller, comprising:
a portable cart frame according to any of claims 1 to 11.
CN201922365060.4U 2019-12-25 2019-12-25 Portable cart frame and baby carriage Active CN211519619U (en)

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CN201922365060.4U CN211519619U (en) 2019-12-25 2019-12-25 Portable cart frame and baby carriage

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Application Number Priority Date Filing Date Title
CN201922365060.4U CN211519619U (en) 2019-12-25 2019-12-25 Portable cart frame and baby carriage

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CN211519619U true CN211519619U (en) 2020-09-18

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CN201922365060.4U Active CN211519619U (en) 2019-12-25 2019-12-25 Portable cart frame and baby carriage

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