WO2024037647A1 - Form-convertible stroller frame - Google Patents

Abstract

Disclosed is a form-convertible stroller frame, comprising a main frame (100) and a sliding frame (200). The main frame comprises a main support rod set (110) and a side support rod set (120), wherein one end of the side support rod set is rotatably connected to the main support rod set by means of a pivot shaft, the other end of the side support rod set is rotatably connected to a first sliding member (510), the end of the main support rod set is rotatably connected to a second sliding member (520), and the main frame is provided with a first wheel set (300); and the sliding frame (200) is provided with a second wheel set (400), wherein the sliding frame is slidably connected to the second sliding member and the first sliding member, respectively, so that the sliding frame can move relative to the main frame, so as to change the distance between the first wheel set and the second wheel set. The wheel base of a stroller can be adjusted according to requirements, so as to meet different use requirements.

Description

Convertible stroller frame Technical field

The present invention relates to the technical field of strollers, and in particular to a stroller frame that can change form.

Background technique

At present, the front and rear wheelbases of commonly used strollers generally adopt a fixed structure, which means that after the stroller is unfolded, its load-bearing structure (such as the center of gravity, load-bearing capacity distribution, etc.) is basically a fixed structure. If you need to switch the use function of the stroller, such as a single seat When switching between two-seater and two-seater, the stability of the stroller is poor. If it is necessary to meet the switch use of this type of function, the size of the stroller frame needs to be increased, which increases the manufacturing cost and is not conducive to transportation and storage.

Contents of the invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a convertible stroller frame that can meet the support requirements under various usage conditions.

A convertible stroller frame according to the first embodiment of the present invention includes a main frame and a sliding frame. The main frame includes a main support rod group and a side support rod group. One end of the side support rod group is rotatable through a pivot shaft. Connected to the main support rod group, the other end of the side support rod group is rotatably connected to the first sliding member, the end of the main support rod group is rotatably connected to the second sliding member, the main frame is provided with a first wheel group; the sliding frame A second wheel set is provided, and the sliding frame is slidably connected to the second sliding part and the first sliding part respectively, so that the sliding frame can move relative to the main frame to change the distance between the first wheel set and the second wheel set. , wherein the main support rod group forms a first connection section from the pivot shaft to the second slider, the side support rod group forms a second connection section from the pivot shaft to the first slider, and the slide frame forms a second connection section from the pivot shaft to the first slider. The part from the sliding member to the first sliding member forms a third connecting section, and at least one of the first connecting section, the second connecting section and the third connecting section is formed by at least two rods hinged to each other.

The convertible stroller frame according to the embodiment of the present invention at least has the following beneficial effects: the wheelbase of the stroller can be adjusted as needed to meet different usage requirements.

In some embodiments of the present invention, the main support rod group includes an auxiliary rod and a main rod, one end of the auxiliary rod is rotatably connected to the second slider, the other end of the auxiliary rod is hinged with one end of the main rod, and the side support rod group One end is rotatably connected to the main rod through a pivot shaft, and the auxiliary rod forms a first connection section with part of the main rod. That is, the main support rod is separated to form two rods that are hinged, so that the stroller frame forms a four-bar linkage mechanism to meet the requirements of Fold and expand functionality.

In some embodiments of the present invention, two auxiliary rods are configured and relatively distributed on both sides of the main frame. The two auxiliary rods are connected through reinforcing rods. The main rods and the auxiliary rods are arranged in one-to-one correspondence, which can enhance the strength of the stroller frame. Structural strength, improved stability.

In some embodiments of the present invention, the sliding frame includes two side sliding rods distributed on both sides of the stroller frame, the second sliding part and the first sliding part are slidably connected to the side sliding rods, and the side sliding rods include mutually hinged The first connecting rod part and the second connecting rod part, part of the first connecting rod part and part of the second connecting rod part form a third connecting section, that is, the two rods are hinged through the side sliding rod, so that the stroller frame forms a four-link Lever mechanism to meet folding and unfolding functions.

In some embodiments of the present invention, a limiting structure is provided between the first connecting rod part and the second connecting rod part, and the limiting structure can limit the first connecting rod part and the second connecting rod part to a straight state, So that the first sliding part and the second sliding part can slide smoothly on the side sliding rod.

In some embodiments of the present invention, when the stroller frame is folded, the main support rod group, the side support rod group, the first connecting rod portion and the second connecting rod portion rotate and fold in the same direction to reduce the space occupied when folded.

In some embodiments of the present invention, a positioning mechanism capable of positioning the first sliding part and the sliding frame is provided between the first sliding part and the sliding frame, and/or a positioning mechanism capable of positioning the first sliding part and the sliding frame is provided between the second sliding part and the sliding frame. The positioning mechanism of the second sliding part and the sliding frame is used to locate the position of the sliding frame and fix the wheelbase of the stroller.

In some embodiments of the present invention, the first wheel set is provided on the side support rod set, and cooperates with the second wheel set to form a front and rear roller support structure to meet the mobile function of the stroller.

In some embodiments of the present invention, the first sliding part and/or the second sliding part is a sleeve, and the sleeve can be sleeved on the corresponding rod and can satisfy the sliding function.

In some embodiments of the present invention, the pivot axis is a rotating joint, and the rotating joint is fixedly or movably provided on the main support rod group to achieve a rotatable connection between the side support rod group and the main support rod group.

In some embodiments of the present invention, the first sliding member and the second sliding member are independent of each other, that is, the first sliding member and the second sliding member can slide independently without interfering, which can make the movement of the vehicle frame more flexible.

In some embodiments of the present invention, the first connecting section or the second connecting section is formed by at least two rods hinged to each other, and the first sliding part and the second sliding part are connected through a connecting structure, so that the first sliding part and the second sliding part The sliding parts are fixedly connected, which is beneficial to improving the stability of the frame, and can have a wheelbase adjustment function.

In some embodiments of the present invention, the first connecting section or the second connecting section is formed by at least two rod members hinged to each other, and the first sliding member and the second sliding member are located between both ends of the sliding frame.

In some embodiments of the invention, the main frame is provided with a mounting structure for mounting the first seat to mount the first seat.

In some embodiments of the present invention, the sliding frame is provided with a mounting position for mounting the second seat to mount the second seat.

In some embodiments of the present invention, a hand push rod group is movable at the upper end of the main support rod group to facilitate the user to control the stroller, and the position of the hand push rod group can be adjusted according to different users to improve versatility.

In some embodiments of the present invention, the main support rod set includes two sets of main rods respectively distributed on both sides of the stroller frame. The hand push rod set has a U-shaped structure and is respectively connected to the two sets of main rods to connect the two sets of main rods. pole to increase structural strength.

In some embodiments of the present invention, the hand push rod set includes a cross bar and two sets of connecting rods that are rotatably connected to both ends of the cross bar. The connecting rods are slidably connected to the main rod to realize the telescopic function of the hand push rod set. The rod and the connecting rod are rotatably connected and can be used to adjust the direction of the crossbar or fold the crossbar.

In some embodiments of the present invention, the main support rod group also includes an extension rod configured in a one-to-one correspondence with the main rod. The extension rod is rotatably connected to the main rod. There are connecting rods at both ends of the crossbar, and the connecting rod and the extension rod can be slidably connected.

In some embodiments of the present invention, the side support rod group includes two sets of side support rods relatively distributed on both sides of the stroller frame. The first sliding member is rotatably connected to the lower end of the side support rod, and the upper end of the side support rod is rotatable. Connected to the pivot shaft, the lower end of the side support rod is extended with an extension section for connecting with the first wheel set, forming a bilateral support structure and meeting the wheelbase adjustment function.

In some embodiments of the present invention, the first wheel set includes rollers distributed on both sides of the vehicle frame, and the rollers are connected through connecting shafts to enhance the structural strength of the vehicle frame.

In some embodiments of the present invention, the sliding frame is used to install the cargo basket and can be used to place items. Since the sliding frame does not have an integral sliding structure, adjusting the wheelbase does not affect the normal use of the cargo basket.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

Figure 1 is a schematic structural diagram of the stroller frame according to the first embodiment of the present invention when the wheelbase is small;

Figure 2 is a schematic side structural view of the stroller frame according to the first specific embodiment of the present invention when the wheelbase is small;

Figure 3 is a schematic structural diagram of the stroller frame in single-seat use according to the first specific embodiment of the present invention.

Figure 4 is a schematic structural diagram of the stroller frame when the wheelbase is relatively large according to the first specific embodiment of the present invention;

Figure 5 is a schematic side structural view of the stroller frame according to the first specific embodiment of the present invention when the wheelbase is relatively large;

Figure 6 is a schematic structural diagram of the double-seater stroller frame according to the first specific embodiment of the present invention;

Figure 7 is a schematic side structural view of the stroller frame when folded according to the first specific embodiment of the present invention;

Figure 8 is a schematic structural diagram of the stroller frame when the wheelbase is smaller according to the second specific embodiment of the present invention;

Figure 9 is a schematic side structural view of the stroller frame according to the second embodiment of the present invention when the wheelbase is small;

Figure 10 is a schematic structural diagram of the stroller frame in single-seat use according to the second specific embodiment of the present invention.

Figure 11 is a schematic structural diagram of the stroller frame when the wheelbase is relatively large according to the second specific embodiment of the present invention;

Figure 12 is a schematic side structural view of the stroller frame according to the second specific embodiment of the present invention when the wheelbase is relatively large;

Figure 13 is a schematic structural diagram of the double-seater stroller frame according to the second specific embodiment of the present invention;

Figure 14 is a schematic side view of the folded stroller frame according to the second specific embodiment of the present invention.

Reference signs:
Main frame 100, main support rod group 110, auxiliary rod 111, main rod 112, reinforcement rod 113, extension rod 114, side support rod group 120, side support rod 121, extension section 121a, hand push rod group 130, cross rod 131 , connecting rod 132;
Sliding frame 200, side sliding rod 210, first connecting rod part 211, second connecting rod part
212;
First round group 300;
Second round group 400;
The first sliding member 510, the second sliding member 520, and the rotating joint 530;
The first seat 910, the second seat 920, and the cargo basket 930.

Detailed ways

The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and cannot be understood as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationships related to the orientation description, such as up, down, front, back, left, right, etc. are based on the orientation shown in the drawings. The position or positional relationship is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present invention.

In the description of the present invention, if the first and second words are described, they are only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number or implicit indication of the indicated technical features. The sequence relationship of the indicated technical features.

In the description of the present invention, unless otherwise explicitly limited, words such as setting, installation, and connection should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

As shown in FIGS. 1 to 14 , a convertible stroller frame according to an embodiment of the present invention includes a main frame 100 and a sliding frame 200 . The main frame 100 includes a main support rod group 110 and a side support rod group 120 . The side supports One end of the rod group 120 is rotatably connected to the main support rod group 110 through a pivot shaft, and the other end of the side support rod group 120 is rotatably connected to the first sliding member.

510. The end of the main support rod group 110 is rotatably connected to a second sliding member 520. The main frame 100 is provided with a first wheel set 300; the sliding frame 200 is provided with a second wheel set 400, and the sliding frame 200 is respectively connected with the second sliding member 520. The member 520 and the first sliding member 510 are slidably connected, so that the sliding frame 200 can move relative to the main frame 100 to change the distance between the first wheel set 300 and the second wheel set 400, that is, the stroller can be adjusted as needed. The wheelbase can be adjusted to meet different usage requirements.

Specifically, as shown in Figures 1 and 2, the distance between the first wheel set 300 and the second wheel set 400 is small. At this time, the stroller frame can be shortened to a smaller size, and the control and placement are more flexible, and can be Meet the requirements for single-seat use (as shown in Figure 3); as shown in Figures 4 and 5, push the sliding frame 200 forward to move the second wheel set 400 forward, increasing the size of the first wheel set 300 and the second wheel set. The distance between the groups 400 is increased because the span and space of the support are increased, so two seats can be installed (as shown in Figure 6) and have high stability.

The main support rod group 110 forms a first connecting section from the pivot shaft to the second sliding member 520 , and the side support rod group 120 forms a second connecting section from the pivoting shaft to the first sliding member 510 . The sliding frame 200 forms a third connecting section from the second sliding member 520 to the first sliding member 510. At least one of the first connecting section, the second connecting section and the third connecting section is formed by at least two rods hinged to each other, so that The first connecting section, the second connecting section and the third connecting section can form a four-link or five-link or other multi-link mechanism, and the stroller frame can change the multi-link mechanism. The link mechanism realizes the functions of folding and unfolding, and can reduce the occupied space when folding by moving the sliding frame 200 to facilitate the placement of the stroller.

Specifically, the stroller frame can be provided with a locking mechanism at the rotating joint to lock the shape of the frame. When the locking mechanism is unlocked, since multi-link mechanisms such as four-link or five-link are unstable structures, the frame can be folded or unfolded.

As shown in Figure 7 and Figure 14, the first connecting section and the third connecting section are respectively divided into two rods that are hinged to each other to form a four-bar linkage mechanism. At this time, the shape of the four-bar linkage mechanism can be changed to achieve the desired structure of the vehicle frame. The folding or unfolding function.

As shown in Figures 7 and 14, in some embodiments of the present invention, when the first sliding member 510 and/or the second sliding member 520 are positioned on the sliding frame 200, the four-bar linkage mechanism can be deformed to fold or unfold the stroller. The vehicle frame can be folded or unfolded without adjusting the first sliding member 510 or the second sliding member 520, which is convenient to use and the operation is simpler and faster.

Specifically, during the specific implementation process, after the sliding frame 200 moves to the selected position, in order to ensure the stability of the mechanism, it is usually necessary to lock the first sliding member 510 and/or the second sliding member 520. In this case, the first sliding member 510 and/or the second sliding member 520 can be locked directly through the four-link The lever mechanism (after the rotating joint is unlocked) performs folding or unfolding of the frame. Therefore, in the present invention, when folding or unfolding, there is no need to unlock the first sliding member 510 and the second sliding member 520 to unlock the folding or unfolding of the frame. Just unfold the switch (unlock the rotating joint), which reduces operations and is convenient to use.

It should be noted that during the specific implementation process, the user can also unlock the first sliding member 510 and/or the second sliding member 520 and then perform the folding or unfolding operation, which can also meet the required functions.

As shown in FIGS. 1 to 7 , in some embodiments of the present invention, the main support rod group 110 includes an auxiliary rod 111 and a main rod 112 . One end of the auxiliary rod 111 is rotatably connected to the second sliding member 520 . The auxiliary rod 111 The other end of the side support rod group 120 is hingedly connected to one end of the main rod 112. One end of the side support rod group 120 is rotatably connected to the main rod 112 through a pivot shaft. The auxiliary rod 111 and part of the main rod 112 form a first connection section, that is, by detaching the main support The rod assembly 110 is hinged into two rod members, so that the stroller frame forms a four-bar linkage mechanism to meet the folding and unfolding functions.

Specifically, the rotation connection between the auxiliary rod 111 and the second sliding member 520, the rotation connection between the auxiliary rod 111 and the main rod 112, the rotation connection between the main rod 112 and the side support rod group 120, the rotation connection between the side support rod group 120 and the third A rotational connection of the sliding member 510, among the four connections One or more locking mechanisms may be provided to lock the form of the four-bar linkage to lock the frame to the unfolded or folded state.

It is conceivable that in some embodiments of the present invention, the main support rod group 110 can be formed by three or four equal rods that are hinged to each other, so that the vehicle frame forms a five-link or six-link mechanism, or it can also be Meet the folding or unfolding function.

As shown in Figures 1 and 4, in some embodiments of the present invention, two auxiliary rods 111 are configured and relatively distributed on both sides of the main frame 100. The two auxiliary rods 111 are connected through a reinforcing rod 113, and the main rod 112 It is configured in one-to-one correspondence with the auxiliary rod 111 to enhance the structural strength of the stroller frame and improve stability.

Specifically, the reinforcing rod 113 connects the upper ends of the two auxiliary rods 111 to enhance the structural strength of the auxiliary rod 111. The main rod 112 is configured in two, and the end of the main rod 112 can be connected to the auxiliary rod 111 or the reinforcing rod through a rotating mechanism. 113 is acceptable.

It is conceivable that in some embodiments of the present invention, a connecting rod group can also be added between the two main rods 112 to further enhance the structural strength.

As shown in Figures 8 to 14, in some embodiments of the present invention, the sliding frame 200 includes two side sliding bars 210 distributed on both sides of the stroller frame. The second sliding member 520 and the first sliding member 510 are slidable. Connected to the side sliding rod 210, the side sliding rod 210 includes a first connecting rod part 211 and a second connecting rod part 212 that are hinged to each other, part of the first connecting rod part 211 and part of the second connecting rod part 212 form a third connecting section, That is, the side sliding rod 210 is hinged into two rod members, so that the stroller frame forms a four-bar linkage mechanism to meet the folding and unfolding functions.

Specifically, the sliding frame 200 has a frame structure with side sliding rods 210 on both sides. The first sliding part 510 and the second sliding part 520 slide with the side sliding rods 210 to realize sliding adjustment of the sliding frame 200 to meet the wheel requirements. distance adjustment function, the main support rod group 110 includes a main rod 112, one end of the main rod 112 is rotationally connected to the second sliding member 520, the side support rod group 120 is rotationally connected to the main rod 112; the first connecting rod portion 211 and the second connecting rod The rotation connection of the part 212, the rotation connection of the main support rod group 110 and the second sliding member 520, the rotation connection of the main support rod group 110 and the side support rod group 120, the side support rod group 120 and the first sliding member 510 At the rotating joints, one or more of the four joints can be provided with a locking mechanism to lock the form of the four-bar linkage to lock the frame to the unfolded or folded state.

It is conceivable that in some embodiments of the present invention, the side sliding rod 210 can be formed by three or four equal rods that are hinged to each other, so that the vehicle frame forms a five-link or six-link mechanism, or the like. The ability to collapse or expand.

In some embodiments of the present invention, a limiting structure is provided between the first connecting rod part 211 and the second connecting rod part 212. The limiting structure can limit the first connecting rod part 211 and the second connecting rod part 212 to In a straight state, the first sliding member 510 and the second sliding member 520 can slide smoothly on the side sliding rod 210 .

Specifically, the limiting structure can be directly provided between the first connecting rod part 211 and the second connecting rod part 212. For example, a limiting step is provided on the first connecting rod part 211. When the second connecting rod part 212 rotates to When it is straight with the first connecting rod part 211, its end presses against the limiting step, restricting the second connecting rod part 212 from continuing to rotate, so that the first connecting rod part 211 and the second connecting rod part 212 remain straight. ; The limit structure can also adopt a fixed limit mechanism such as a limit pin or the like.

Specifically, when the stroller frame is folded, the first connecting rod part 211 and the second connecting rod part 212 are rotated and folded downward to form an inverted V-shaped structure, which can correspond to the main support rod group 110 and reduce the space occupied by folding.

It is conceivable that in some embodiments of the present invention, the main support rod group 110 and the side support rod group 120, the first connecting rod portion 211 and the second connecting rod portion 212 can be configured to be reversely folded, or folded into other configurations. form.

It is conceivable that in some embodiments of the present invention, the second connecting section can also be configured to be formed by at least two rods hinged to each other, that is, the side support rod group 120 can be folded to meet the folding or unfolding requirements of the vehicle frame. Function.

In some embodiments of the present invention, a positioning mechanism capable of positioning the first sliding member 510 and the sliding frame 200 is provided between the first sliding member 510 and the sliding frame 200 , and/or, the second sliding member 520 and the sliding frame 200 A positioning mechanism capable of positioning the second sliding member 520 and the sliding frame 200 is provided therebetween to position the sliding frame 200 and fix the wheelbase of the stroller.

Specifically, after the sliding frame 200 slides to the set position, the relative position of the first sliding member 510 and the sliding frame 200 can be positioned through the positioning mechanism, and/or the relative position of the second sliding member 520 and the sliding frame 200, Thereby, the sliding frame 200 is fixed relative to the main frame 100, achieving the effect of fixing the wheelbase of the stroller.

It is conceivable that in some embodiments of the present invention, a positioning mechanism can also be provided on the sliding frame 200 and the main frame 100 to position the sliding frame 200, such as a latch is provided on the main frame 100, and a plurality of locking mechanisms are provided on the sliding frame 200. The latch holes distributed along the sliding direction can also achieve the effect of fixing the wheelbase of the stroller.

In some embodiments of the present invention, the positioning mechanism is a latch mechanism. The first slider 510 and/or the second slider 520 are slidably provided with latch pins. The sliding frame 200 is provided with a plurality of latch holes distributed along the sliding direction. The pins can be inserted into different pin holes to achieve different positioning effects.

It is conceivable that in some embodiments of the present invention, the positioning mechanism may also be a pinball positioning mechanism, a screw pressing positioning mechanism or a cam pressing mechanism, etc., which will not be described in detail here.

In some embodiments of the present invention, positioning mechanisms are provided between the first sliding member 510 and the sliding frame 200 and between the second sliding member 520 and the sliding frame 200 to improve the stability of the vehicle frame.

It is conceivable that in some embodiments of the present invention, a positioning mechanism may be provided only between the first sliding member 510 and the sliding frame 200 or between the second sliding member 520 and the sliding frame 200 , which may also satisfy the requirements of positioning the sliding frame. 200 requirement.

As shown in Figures 1 to 14, in some embodiments of the present invention, the first wheel set 300 is provided on the side support rod set 120, and cooperates with the second wheel set 400 to form a front and rear roller support structure to meet the mobile function of the stroller.

Specifically, as shown in Figures 2 and 9, the second wheel set 400 is arranged at the front section of the sliding frame 200. The main support rod group 110 cooperates with the second sliding member 520 to be connected to the sliding frame 200 near the front section. The side support rod group 120 cooperates with the first sliding member 510 to be connected to the position near the rear section of the sliding frame 200. The side support rod group 120 continues to extend downward and disposes the first wheel set 300, so that the second wheel set 400 and the first wheel set 300 form a front and rear respectively. Roller support structure.

It is conceivable that in some embodiments of the present invention, the first wheel set 300 can also be directly or indirectly provided on the main support rod group 110. For example, an auxiliary support rod can be extended on the main support rod group 110 for use. Installing the first wheel set 300 can also meet the support requirements, and can also realize the adjustment of the front and rear wheelbase.

In some embodiments of the present invention, the first wheel set 300 is disposed at the front end of the main support rod set 110, and the second wheel set 400 is disposed near the rear section of the sliding frame 200. At this time, the sliding frame 200 can be pulled back. Meet the wheelbase adjustment function.

As shown in Figures 1 to 14, in some embodiments of the present invention, the first sliding part 510 and/or the second sliding part 520 are sleeves, and the sleeves can be sleeved on the corresponding rods and can satisfy the sliding requirements. Function.

Specifically, the sliding frame 200 has a frame structure with side sliding rods 210 on both sides. The second sliding part 520 and the first sliding part 510 are set on the side sliding rod 210 to adjust the position of the sliding bracket 200. Achieve wheel base adjustment.

It is conceivable that in some embodiments of the present invention, the first sliding part 510 and the second sliding part 520 may also be a slide rail slide groove structure, for example, the first sliding part 510 and the second sliding part 520 are set to T Type or dovetail structure, with T-shaped grooves or dovetail grooves set on the corresponding rods, can also meet the function of sliding setting.

As shown in Figures 1, 2, 4, and 5, in some embodiments of the present invention, the pivot axis is a rotating joint 530, and the rotating joint 530 is fixedly or movably provided on the main support rod group 110 to achieve side support. The rod group 120 is rotatably connected to the main support rod group 110 .

Specifically, one end of the rotating joint 530 is sleeved on the main support rod group 110, and the other end of the rotating joint 530 is rotationally connected to the side support rod group 120. The rotating joint 530 and the main support rod group 110 can be fixedly connected or slidably connected. When the rotating joint 530 is slidably connected to the main support rod group 110 and is equipped with a positioning mechanism, it can be used to assist the unfolding and folding of the stroller frame.

In some embodiments of the present invention, the first sliding member 510 and the second sliding member 520 are independent of each other, that is, the first sliding member 510 and the second sliding member 520 can slide independently without interfering, which can make the movement of the vehicle frame easier. flexible.

Specifically, the first sliding member 510 and the second sliding member 520 can slide independently without interfering, and can be more flexible when unfolding or folding the frame (under the premise of contacting the positioning mechanism).

In some embodiments of the present invention, the first connecting section or the second connecting section is formed by at least two rods hinged to each other, and the first sliding part 510 and the second sliding part 520 are connected through a connecting structure, so that the first sliding part 510 Being fixedly connected to the second sliding member 520 is beneficial to improving the stability of the vehicle frame, and can have a wheelbase adjustment function.

Specifically, the first sliding member 510 and the second sliding member 520 may be connected through a connecting rod or a sleeve set on the sliding frame 200, so that the two are linked.

It is conceivable that in some embodiments of the present invention, when the third connecting section is composed of a single rod, the first sliding part 510 and the second sliding part 520 can be an integral structure, that is, the whole is a long sliding part. , the main support rod group 110 and the side support rod group 120 are respectively rotatably connected to both ends of the long sliding member.

In some embodiments of the present invention, the first connecting section or the second connecting section is formed by at least two rods hinged to each other, and the first sliding member 510 and the second sliding member 520 are located between two ends of the sliding frame 200, that is, When the sliding frame 200 has a non-foldable structure, the first sliding member 510 and the second sliding member 520 can be disposed near the middle of the sliding frame 200, which can also meet the needs of the wheelbase adjustment function and frame folding.

As shown in FIGS. 8 and 11 , in some embodiments of the present invention, the main frame 100 is provided with an installation structure for installing the first seat 910 to install the first seat 910 .

In some embodiments of the present invention, the sliding frame 200 is provided with a mounting position for mounting the second seat 920 to mount the second seat 920 .

Specifically, the first seat 910 and the second seat 920 can be detachably installed on the stroller frame, and can be connected using a clamping mechanism, an insertion mechanism, etc.

As shown in Figures 1, 4, 8, and 11, in some embodiments of the present invention, a push rod set 130 is movably provided at the upper end of the main support rod set 110 to facilitate the user to control the stroller and to Adjust the position of the hand push rod group 130 according to different users to improve versatility.

Specifically, the sliding structure of the hand push rod group 130 is inserted into the main support rod group 110 through a sleeve, so that the position of the hand push rod group 130 can be adjusted telescopically. There is also a gap between the hand push rod group 130 and the main support rod group 110. A positioning mechanism is configured to position the extended length of the hand push rod group 130.

It is conceivable that in some embodiments of the present invention, the hand push rod group 130 can also be fixedly arranged on the main support rod group 110 .

As shown in Figures 1 and 4, in some embodiments of the present invention, the main support rod group 110 includes two sets of main rods 112 respectively distributed on both sides of the stroller frame. The hand push rod group 130 has a U-shaped structure and is respectively Connected to two sets of main poles 112 to connect two sets of main poles 112 to improve structural strength.

It is conceivable that in some embodiments of the present invention, the main support rod group 110 can also be configured with other auxiliary rod groups, such as a transverse support rod between the two groups of main rods 112 , or between the two groups of main rods 112 Set up cross-distributed scissor-shaped rod groups to improve structural strength or meet different use functions.

As shown in Figures 1 and 4, in some embodiments of the present invention, the hand push rod group 130 includes a cross bar 131 and two sets of connecting rods 132 that are rotatably connected to both ends of the cross bar 131. The connecting rods 132 and the main rod 112 can be slidably connected to realize the telescopic function of the hand push rod group 130. The crossbar 131 and the connecting rod 132 can be rotationally connected and can be used to adjust the direction of the crossbar 131 or fold the crossbar 131.

Specifically, the cross bar 131 and the connecting rod 132 are connected through a rotating joint and have a positioning mechanism. As shown in Figure 5, when folded, the cross bar 131 can be rotated and folded to reduce the space occupied when folded.

It is conceivable that in some embodiments of the present invention, the hand push rod set 130 may also be a U-shaped tube with a fixed structure.

As shown in Figures 8 and 11, in some embodiments of the present invention, the main support rod group 110 also includes an extension rod 114 configured in one-to-one correspondence with the main rod 112. The extension rod 114 and the main rod 112 are rotatably connected. The push rod set 130 includes a cross bar 131 and two sets of connecting rods 132 that are rotatably connected to both ends of the cross bar 131. The connecting rods 132 and the extension rods 114 are slidably connected to realize the telescopic function of the hand push rod set 130. The cross bar 131 and The connecting rod 132 is rotatably connected and can be used to adjust the direction of the cross bar 131 or fold the cross bar 131, and the extension rod 114 and the main rod 112 are rotatably connected, which can reduce the space occupied by folding.

Specifically, the extension rod 114 and the main rod 112 are connected through a rotating joint 530. The rotating joint 530 is also connected to the side support rod group 120, and all three can rotate relatively.

As shown in Figures 1, 4, 8, and 11, in some embodiments of the present invention, the side support rod group 120 includes two sets of side support rods 121 relatively distributed on both sides of the stroller frame. The first sliding member 510 is rotatably connected to the lower end of the side support rod 121, the upper end of the side support rod 121 is rotatably connected to the pivot shaft, and the lower end of the side support rod 121 is extended with an extension section 121a for connecting the first wheel set 300, forming a double-sided Support structure and meet the wheelbase adjustment function.

In some embodiments of the present invention, the first wheel set 300 includes rollers distributed on both sides of the frame, and the rollers are connected through connecting shafts to enhance the structural strength of the frame.

It is conceivable that in some embodiments of the present invention, the first wheel set 300 may not be disposed on the side support rod 121. The lower part of the side support rod 121 in the above embodiment is eliminated, and the first wheel set 300 is disposed on the main support rod. At the front end of the group 110, the second wheel group 400 is arranged at a position close to the rear section of the sliding frame 200. At this time, pulling the sliding frame 200 can also satisfy the wheelbase adjustment function.

It should be noted that in some embodiments of the present invention, the sliding pair mechanism and the rotating pair mechanism involved can be equipped with a positioning mechanism to fix the sliding position or the rotating position to realize the adjustment function of the frame (such as folding, unfold, raise or lower, etc.).

As shown in Figures 3, 6, 10, and 13, Figures 3, 6, 10, and 13 are schematic structural diagrams of the stroller frame of the present invention when used in specific applications. As shown in Figures 3 and 10, When the stroller frame is adjusted to a smaller wheelbase, the stroller frame can be used to install the first seat 910 to form a single-seat stroller; as shown in Figures 6 and 13, when the stroller frame is adjusted to a larger wheelbase, the stroller frame The frame can be used to install the first seat 910 and the second seat 920 to form a two-seater stroller.

As shown in Figures 3, 6, 10, and 13, in some embodiments of the present invention, the sliding rack 200 is used to install the carrying basket 930, which can be used to place items, and because the sliding rack 200 does not have an integral sliding structure, Adjusting the wheelbase does not affect the normal use of the cargo basket 930.

Specifically, the cargo basket 930 may be a cloth basket or a plastic mesh basket.

However, the invention is not limited to the above-described embodiments. Those skilled in the art can also make equivalent modifications or substitutions without departing from the spirit of the invention. These equivalent modifications or substitutions are included in the claims of this application. within a limited range.

Claims (17)

A convertible stroller frame, which is characterized by: include: Main frame (100). The main frame (100) includes a main support rod group (110) and a side support rod group (120). One end of the side support rod group (120) is rotatably connected to the The other ends of the main support rod group (110) and the side support rod group (120) are rotatably connected to the first slider (510), and the ends of the main support rod group (110) are rotatably connected with second sliding member (520), the main frame (100) is provided with a first wheel set (300); The sliding frame (200) is provided with a second wheel set (400), and the sliding frame (200) is connected to the first sliding member (510) and the second sliding member (520) respectively. ) is slidably connected, so that the sliding frame (200) can move relative to the main frame (100) to change the relationship between the first wheel set (300) and the second wheel set (400). distance; Wherein, the main support rod group (110) forms a first connection section from the pivot shaft to the second slider (520), and the side support rod group (120) is formed from the pivot shaft. The part to the first sliding part (510) forms a second connecting section, and the part of the sliding frame (200) from the second sliding part (520) to the first sliding part (510) forms a third connecting section. Connecting section, at least one of the first connecting section, the second connecting section and the third connecting section is formed by at least two rods hinged to each other. The convertible stroller frame according to claim 1, characterized in that: The main support rod group (110) includes an auxiliary rod (111) and a main rod (112). One end of the auxiliary rod (111) is rotatably connected to the second slider (520). The auxiliary rod (111) The other end of 111) is hinged with one end of the main rod (112), one end of the side support rod group (120) is rotatably connected to the main rod (112) through the pivot shaft, and the auxiliary rod (111) and part of the main rod (112) form the first connecting section. The convertible stroller frame according to claim 2, characterized in that: The auxiliary rods (111) are configured in two and are relatively distributed on both sides of the main frame (100). The two auxiliary rods (111) are connected by a reinforcing rod (113), and the main rod (112) It is arranged in one-to-one correspondence with the auxiliary rod (111). The convertible stroller frame according to claim 1, characterized in that: The sliding frame (200) includes two side sliding bars (210) distributed on both sides of the stroller frame, and the second sliding member (520) and the first sliding member (510) are slidably connected to the stroller frame. Side sliding rod (210), the side sliding rod (210) includes a first connecting rod portion (211) and a second connecting rod portion (212) that are hinged to each other, part of the first connecting rod part (211) and part The second connecting rod portion (212) forms the third connecting section. The convertible stroller frame according to claim 4, characterized in that: A limiting structure is provided between the first connecting rod part (211) and the second connecting rod part (212). The limiting structure can connect the first connecting rod part (211) and the second connecting rod part (212). The connecting rod part (212) is limited to a straight state. The convertible stroller frame according to claim 1, characterized in that: A positioning mechanism is provided between the first sliding part (510) and the sliding frame (200); and / or, A positioning mechanism is provided between the second sliding part (520) and the sliding frame (200). The convertible stroller frame according to claim 1, characterized in that: The first wheel set (300) is provided on the side support rod set (120). The convertible stroller frame according to claim 1, characterized in that: The first sliding part (510) and/or the second sliding part (520) is a sleeve. The convertible stroller frame according to claim 1, characterized in that: The pivot axis is a rotating joint (530), and the rotating joint (530) is fixedly or movably provided on the main support rod group (110). The convertible stroller frame according to claim 1, characterized in that: The first sliding member (510) and the second sliding member (520) are independent of each other. The convertible stroller frame according to claim 1, characterized in that: The first connecting section or the second connecting section is formed by at least two rods hinged to each other, wherein, The first sliding part (510) and the second sliding part (520) are connected through a connecting structure; and / or, The first sliding member (510) and the second sliding member (520) are located between two ends of the sliding frame (200). The convertible stroller frame according to claim 1, characterized in that: The main frame (100) is provided with a mounting structure for mounting the first seat (910); and / or, The sliding frame (200) is provided with an installation position for installing the second seat (920). The convertible stroller frame according to claim 1, characterized in that: The upper end of the main support rod group (110) is movably provided with a hand push rod group (130). The convertible stroller frame according to claim 13, characterized in that: The main support rod group (110) includes two groups of main rods (112) respectively distributed on both sides of the stroller frame. The hand push rod group (130) has a U-shaped structure and is connected to the two groups of main rods respectively. (112). The convertible stroller frame according to claim 14, characterized in that: The hand push rod set (130) includes a cross bar (131) and two sets of connecting rods (132) that are rotatably connected to both ends of the cross bar (131). The connecting rod (132) and the main rod (112) Sliding connection. The convertible stroller frame according to claim 14, characterized in that: The main support rod group (110) also includes an extension rod (114) configured in one-to-one correspondence with the main rod (112). The extension rod (114) is rotatably connected to the main rod (112), so The hand push rod set (130) includes a cross bar (131) and two sets of connecting rods (132) that are rotatably connected to both ends of the cross bar (131). The connecting rod (132) and the extension rod (132) 114) Sliding connection. The convertible stroller frame according to claim 1, characterized in that: The side support rod group (120) includes two sets of side support rods (121) relatively distributed on both sides of the stroller frame, and the first sliding member (510) is rotatably connected to the side support rod (121). Lower end, the upper end of the side support rod (121) is rotatably connected to the pivot shaft, and the lower end of the side support rod (121) is extended with an extension section for connecting with the first wheel set (300) (121a).