Folding cart

Abstract

The utility model belongs to the technical field of carts, and particularly relates to a folding cart. Comprising an upper frame set, a front upper rod piece, a rear upper rod piece and an upper connecting rod piece. A front lower rod piece, a rear lower rod piece and a lower connecting rod piece; the hinge piece is arranged between the upper frame set and the lower frame set, the front sliding rod piece and the rear sliding rod piece are arranged on the two sides of the hinge piece respectively, the two ends of the front supporting rod piece are hinged to the front sliding rod piece and the front lower rod piece respectively, and the two ends of the rear supporting rod piece are hinged to the rear sliding rod piece and the rear lower rod piece respectively. A front locking assembly, a rear locking assembly, and an unlocking assembly. The pressure resistance of the trolley is improved to 2-3 times that of a traditional single-layer folding structure, and the supporting force of the folding trolley is remarkably enhanced. Meanwhile, a folding and unlocking mechanism is further arranged, and the situation that when the trolley passes through the uneven ground and the like, the trolley is likely to be automatically folded, so that the trolley is unstable, and the child is injured is avoided.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of strollers, and particularly relates to a folding stroller. BACKGROUND

[0002] Although the folding strollers on the market can be conveniently stored through a hinged frame, they generally have the problem of insufficient support strength. In actual use scenarios, when heavy objects or children are placed on the stroller, the support rods are easily deformed, bent or even broken, which brings great safety hazards to users and greatly affects user experience, and is not conducive to market promotion and user use. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problem of insufficient support strength of the folding stroller in the prior art, the application provides a folding stroller.

[0004] The application is implemented through the following technical scheme:

[0005] A folding stroller comprises:

[0006] a stroller main body, which comprises an upper stroller group, a front upper rod, a rear upper rod, and an upper connecting rod hingedly connected to the front upper rod and the rear upper rod at both ends;

[0007] a lower stroller group, which comprises a front lower rod, a rear lower rod, and a lower connecting rod hingedly connected to the front lower rod and the rear lower rod at both ends;

[0008] a support frame group, which comprises a hinge arranged between the upper stroller group and the lower stroller group, a front sliding rod and a rear sliding rod arranged on both sides of the hinge, a front support rod hingedly connected to the front sliding rod and the front lower rod at both ends, and a rear support rod hingedly connected to the rear sliding rod and the rear lower rod at both ends, one end of the front sliding rod being hingedly connected to the hinge and the other end being slidingly installed on one side of the stroller main body, one end of the rear sliding rod being hingedly connected to the hinge and the other end being slidingly installed on the other side of the stroller main body;

[0009] a release mechanism, which comprises a front locking assembly for limiting sliding of the front sliding rod, a rear locking assembly for limiting sliding of the rear sliding rod, and an unlocking assembly for unlocking the front locking assembly and the rear locking assembly.

[0010] The folding stroller described above, wherein the sliding end of the front sliding rod is slidingly installed on the front lower rod along the length direction of the front lower rod, and the sliding end of the rear sliding rod is slidingly installed on the rear lower rod along the length direction of the rear lower rod.

[0011] A folding stroller as described above, wherein the front locking assembly comprises a first limiting member provided on the front lower rod member and configured to limit the sliding end of the front sliding rod member from sliding away from the lower connecting rod member, a second limiting member provided in the front sliding rod member and configured to be movably extended out of the front sliding rod member at the sliding end of the front sliding rod member, a first limiting slot provided on the front lower rod member and configured to allow the second limiting member to be inserted therein to limit the front sliding rod member from sliding along the length direction of the front lower rod member, and a first elastic element provided between the front sliding rod member and the second limiting member and configured to push the extended end of the second limiting member to keep the extended end of the second limiting member extended out of the front sliding rod member, when the lower frame set is unfolded, the sliding end of the front sliding rod member slides to the position where the second limiting member is inserted into the first limiting slot to fix the sliding end of the front sliding rod member.

[0012] A folding stroller as described above, wherein the rear locking assembly comprises a third limiting member provided on the rear lower rod member and configured to limit the sliding end of the rear sliding rod member from sliding away from the lower connecting rod member, a fourth limiting member provided in the rear sliding rod member and configured to be movably extended out of the rear sliding rod member at the sliding end of the rear sliding rod member, a second limiting slot provided on the rear lower rod member and configured to allow the fourth limiting member to be inserted therein to limit the rear sliding rod member from sliding along the length direction of the rear lower rod member, and a second elastic element provided between the rear sliding rod member and the fourth limiting member and configured to push the extended end of the fourth limiting member to keep the extended end of the fourth limiting member extended out of the rear sliding rod member, when the lower frame set is unfolded, the sliding end of the rear sliding rod member slides to the position where the fourth limiting member is inserted into the second limiting slot to fix the sliding end of the rear sliding rod member.

[0013] A folding stroller as described above, wherein the unlocking assembly comprises a movable sleeve provided on the hinge member, a first limiting column provided in the front sliding rod member and configured to pass through the second limiting member, and a front pull wire having one end connected to the movable sleeve and the other end connected to the second limiting member, the second limiting member is provided with a first limiting slot configured to allow the first limiting column to pass therethrough to limit the extension distance of the second limiting member relative to the front sliding rod member, when the movable sleeve moves towards the upper frame set, the second limiting member is pulled to move into the front sliding rod member by the front pull wire, the second limiting member is separated from the first limiting slot and compresses the first elastic element to unlock the limitation of the sliding end of the front sliding rod member from sliding along the length direction of the front lower rod member.

[0014] The folding stroller as described above, the unlocking assembly further comprises a second limiting column arranged in the rear sliding rod and passing through the fourth limiting piece, and a rear pull wire having one end connected with the movable sleeve and the other end connected with the fourth limiting piece, the fourth limiting piece is provided with a second limiting slot for the second limiting column to pass through so as to limit the extension distance of the fourth limiting piece relative to the rear sliding rod, when the movable sleeve moves towards the upper stroller set, the fourth limiting piece is pulled to move into the rear sliding rod through the rear pull wire, the fourth limiting piece is separated from the second limiting slot and compresses the second elastic element, so as to unlock the restriction of the sliding end of the rear sliding rod along the length direction of the rear lower rod.

[0015] The folding stroller as described above further comprises:

[0016] The front wheel frame comprises a front lower mounting portion, a front upper mounting portion, and a front wheel frame vertical rod connecting the front lower mounting portion and the front upper mounting portion.

[0017] The rear wheel frame comprises a rear lower mounting portion, a rear upper mounting portion, and a rear wheel frame vertical rod connecting the rear lower mounting portion and the rear upper mounting portion.

[0018] The wheel set is arranged on the front wheel frame and the rear wheel frame.

[0019] The end of the front upper rod away from the upper connecting rod and the end of the front lower rod away from the lower connecting rod are respectively hinged to the front wheel frame, and the end of the rear upper rod away from the upper connecting rod and the end of the rear lower rod away from the lower connecting rod are respectively hinged to the rear wheel frame.

[0020] The folding stroller as described above, the sliding end of the front sliding rod is slidingly installed on the front wheel frame vertical rod along the height direction of the front wheel frame vertical rod, and the sliding end of the rear sliding rod is slidingly installed on the rear wheel frame vertical rod along the height direction of the rear wheel frame vertical rod.

[0021] The folding stroller as described above, when the stroller body is unfolded, the front support rod and the rear support rod are respectively perpendicular to the front lower rod and the rear lower rod.

[0022] The folding stroller as described above, the front sliding rod and the rear sliding rod comprise an extension section and a bending section arranged in sequence from the hinge to the lower stroller set, the bending section is bent towards the lower stroller set, and the front support rod and the rear support rod are respectively hinged to the extension section.

[0023] Compared with the prior art, the present application has the following advantages:

[0024] The folding stroller of the present application improves the overall structural strength and stability of the folding stroller when unfolded by providing front and rear sliding rod members hingedly arranged between the upper and lower frame sets, and front and rear support rod members hingedly arranged between the lower frame set and the front and rear sliding rod members to form a double-layer hinged structure. In the unfolded state, the front and rear sliding rod members are slidingly mounted along the main body of the frame, combined with the multidirectional hinged arrangement of the front and rear support rod members, forming a symmetrical triangular mechanical support system, with the maximum compression resistance increased by 2-3 times that of the traditional single-layer folding structure, significantly enhancing the support of the folding stroller. Meanwhile, a folding and unlocking mechanism is provided, which limits the sliding of the front and rear sliding rod members through the front and rear locking components of the folding and unlocking mechanism, preventing the stroller from automatically folding when passing over uneven ground, etc., which may cause instability of the stroller and harm children. When folding is required, the front and rear locking components are unlocked by the unlocking components of the unlocking mechanism to limit the front and rear sliding rod members, and the folding of the foldable frame can be completed by simply lifting the upper connecting rod, which is very convenient to operate. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 is a schematic diagram of the unfolded structure in the embodiment of the present application Figure 1 ;

[0027] Figure 2 is a schematic diagram of the unfolded structure in the embodiment of the present application Figure 2 ;

[0028] Figure 3 is an enlarged view of A in Figure 2 ;

[0029] Figure 4 is an enlarged view of B in Figure 2 ;

[0030] Figure 5 is a schematic diagram of the folding structure in the embodiment of the present application. DETAILED DESCRIPTION

[0031] In order to make the technical problems and beneficial effects of the present application more clear, the following will further describe the present application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0032] Referring to Figures 1 to 5 A folding trolley comprising:

[0033] a trolley main body 1 comprising an upper trolley group 11, a front upper bar 111, a rear upper bar 112, and an upper connecting bar 113 hingedly connected to the front upper bar 111 and the rear upper bar 112 at both ends;

[0034] a lower trolley group 12 comprising a front lower bar 121, a rear lower bar 122, and a lower connecting bar 123 hingedly connected to the front lower bar 121 and the rear lower bar 122 at both ends;

[0035] a support frame group 13 comprising a hinge 131 arranged between the upper trolley group 11 and the lower trolley group 12, a front sliding bar 132 and a rear sliding bar 133 arranged on both sides of the hinge 131 respectively, a front support bar 134 hingedly connected to the front sliding bar 132 and the front lower bar 121 at both ends, and a rear support bar 135 hingedly connected to the rear sliding bar 133 and the rear lower bar 122 at both ends, one end of the front sliding bar 132 being hingedly connected to the hinge 131 and the other end being slidingly installed on one side of the trolley main body 1, one end of the rear sliding bar 133 being hingedly connected to the hinge 131 and the other end being slidingly installed on the other side of the trolley main body 1;

[0036] a release mechanism 2 comprising a front locking assembly 21 for limiting the sliding of the front sliding bar 132, a rear locking assembly 22 for limiting the sliding of the rear sliding bar 133, and an unlocking assembly 23 for unlocking the front locking assembly 21 and the rear locking assembly 22.

[0037] The folding trolley of the present application improves the overall structural strength and stability of the folded trolley when unfolded by hingedly arranging the front sliding bar and the rear sliding bar between the upper trolley group and the lower trolley group, and hingedly arranging the front support bar and the rear support bar between the lower trolley group and the front sliding bar and the rear sliding bar to form a double-level hinged structure. In the unfolded state, the sliding installation of the front and rear sliding bars along the trolley main body in combination with the multidirectional hinged layout of the front and rear support bars forms a symmetrical triangular mechanical support system, the maximum compression capacity is increased by 2-3 times that of the traditional single-layer folding structure, and the support force of the folding trolley is significantly enhanced.

[0038] Further, as a preferred embodiment of the present application but not limited, the sliding end of the front sliding bar 132 is slidingly installed on the front lower bar 121 along the length direction of the front lower bar 121, and the sliding end of the rear sliding bar 133 is slidingly installed on the rear lower bar 122 along the length direction of the rear lower bar 122.

[0039] In this embodiment, when the front sliding rod and the rear sliding rod slide along the length direction of the front lower rod and the rear lower rod respectively during unfolding, the hinge points of the front support rod 134 and the rear support rod 135 are adjusted in angle synchronously with the sliding displacement, so that the front support rod 134 forms a rigid triangular support approximately perpendicular to the front lower rod 121, and the rear support rod 135 forms a symmetric reverse support with the rear lower rod 122. The double triangular structure makes the load evenly transmitted to the ground along the axial direction of the rod, avoids the bending moment superposition effect caused by the inclined support rod in the traditional folding stroller, and improves the overall torsional stiffness of the frame.

[0040] Further, as a preferred embodiment of the present scheme but not limited, the front locking assembly 21 includes a first limiting piece 211 arranged on the front lower rod 121 and used for limiting the sliding end of the front sliding rod 132 to slide away from the lower connecting rod 123, a second limiting piece 212 arranged in the front sliding rod 132 and movably extended out of the front sliding rod 132 at the sliding end of the front sliding rod 132, a first limiting aperture 213 arranged on the front lower rod 121 and used for the second limiting piece 212 to be clamped in to limit the front sliding rod 132 to slide along the length direction of the front lower rod 121, and a first elastic element 214 arranged between the front sliding rod 132 and the second limiting piece 212 and used for pushing the extended end of the second limiting piece 212 to keep extending out of the front sliding rod 132. When the lower frame group 12 is unfolded, the sliding end of the front sliding rod 132 slides to the position where the second limiting piece 212 is clamped in the first limiting aperture 213, so as to fix the sliding end of the front sliding rod 132.

[0041] In this embodiment, through the interaction of the first limiting piece 211 and the second limiting piece 212, the sliding end of the front sliding rod 132 is limited to slide along the length direction of the front lower rod 121, so as to fix the position of the front sliding rod 132 when the lower frame group 12 is unfolded, and form a stable support structure. When the second limiting piece 212 is clamped in the first limiting aperture 213, the front sliding rod 132 is fixed to prevent it from sliding or loosening when bearing heavy objects or children, avoid the damage of the support rod, and improve the safety and reliability of the stroller.

[0042] Further, as a preferred embodiment of the present solution but not limited, the rear locking assembly 22 comprises a third limiting member 221 arranged on the rear lower rod member 122 and used for limiting the sliding end of the rear sliding rod member 133 from sliding away from the lower connecting rod member 123, a fourth limiting member 222 arranged in the rear sliding rod member 133 and movably extended out of the rear sliding rod member 133 at the sliding end of the rear sliding rod member 133, a second limiting slot 223 arranged on the rear lower rod member 122 and used for allowing the fourth limiting member 222 to be clamped therein to limit the rear sliding rod member 133 from sliding along the length direction of the rear lower rod member 122, and a second elastic member 224 arranged between the rear sliding rod member 133 and the fourth limiting member 222 and used for pushing the extended end of the fourth limiting member 222 to keep extending out of the rear sliding rod member 133. When the lower frame assembly 12 is unfolded, the sliding end of the rear sliding rod member 133 slides to the position where the fourth limiting member 222 is clamped in the second limiting slot 223, so as to fix the sliding end of the rear sliding rod member 133.

[0043] In the embodiment, the sliding end of the rear sliding rod member 133 is limited from sliding along the length direction of the rear lower rod member 122 through the interaction of the third limiting member 221 and the fourth limiting member 222. Specifically, when the fourth limiting member 222 is clamped in the second limiting slot 223, the rear sliding rod member 133 is fixed to prevent it from sliding or loosening when bearing heavy objects or children, so as to avoid damage to the supporting rod and improve the safety and reliability of the stroller.

[0044] Further, as a preferred embodiment of the present solution but not limited, the unlocking assembly 23 comprises a movable sleeve member 231 movably sleeved on the hinge member 131, a first limiting column 232 arranged in the front sliding rod member 132 and passing through the second limiting member 212, and a front pull wire 233 having one end connected with the movable sleeve member 231 and the other end connected with the second limiting member 212. The second limiting member 212 is provided with a first limiting slot 2121 for allowing the first limiting column 232 to pass therethrough to limit the extension distance of the second limiting member 212 relative to the front sliding rod member 132. When the movable sleeve member 231 moves towards the upper frame assembly 11, the second limiting member 212 is pulled by the front pull wire 233 to move into the front sliding rod member 132, the second limiting member 212 is separated from the first limiting slot 213 and the first elastic member 214 is compressed, so as to unlock the limitation of the sliding end of the front sliding rod member 132 from sliding along the length direction of the front lower rod member 121.

[0045] In this embodiment, the pull wire of the traditional cart is designed to extend downward from the vertical direction to the front and rear lower rod members and then turn to connect the release mechanism, the turning angle of the pull wire is large, the wear at the turning angle is large, and the pull wire is prone to be stuck. In this scheme, the movable sleeve 231 is movably arranged on the hinge member 131. When the front sliding rod member 132 needs to be unlocked, the movable sleeve 231 moves towards the upper cart frame assembly 11, the front pull wire 233 pulls the second limiting member 212 to overcome the elastic force of the first elastic element 214, so that the second limiting member 212 is retracted into the front sliding rod member 132, thereby separating the first limiting slot 213 and releasing the restriction on the sliding end of the front sliding rod member 132. Compared with the traditional way, the layout of the pull wire reduces the angle of the pull wire, reduces the wear, and makes the unlocking more smooth, thereby improving the reliability and service life of the cart.

[0046] Further, as a preferred embodiment of the present scheme but not limited, the unlocking assembly 23 further comprises a second limiting column 234 arranged in the rear sliding rod member 133 and penetrating through the fourth limiting member 222, and a rear pull wire 235 connected to the movable sleeve 231 at one end and connected to the fourth limiting member 222 at the other end. The fourth limiting member 222 is provided with a second limiting groove 2221 for the second limiting column 234 to penetrate to limit the extension distance of the fourth limiting member 222 relative to the rear sliding rod member 133. When the movable sleeve 231 moves towards the upper cart frame assembly 11, the fourth limiting member 222 is pulled by the rear pull wire 235 to move into the rear sliding rod member 133, the fourth limiting member 222 separates from the second limiting slot 223 and compresses the second elastic element 224 to unlock the restriction of the sliding end of the rear sliding rod member 133 along the length direction of the rear lower rod member 122.

[0047] Further, as a preferred embodiment of the present scheme but not limited, further comprising:

[0048] The front wheel frame 3 comprises a front lower mounting portion 31, a front upper mounting portion 32, and a front wheel frame upright 33 connecting the front lower mounting portion 31 and the front upper mounting portion 32.

[0049] The rear wheel frame 4 comprises a rear lower mounting portion 41, a rear upper mounting portion 42, and a rear wheel frame upright 43 connecting the rear lower mounting portion 41 and the rear upper mounting portion 42.

[0050] The wheel set 5 is arranged on the front wheel frame 3 and the rear wheel frame 4.

[0051] The end of the front upper rod member 111 away from the upper connecting rod member 113 and the end of the front lower rod member 121 away from the lower connecting rod member 123 are respectively hinged to the front wheel frame 3, and the end of the rear upper rod member 112 away from the upper connecting rod member 113 and the end of the rear lower rod member 122 away from the lower connecting rod member 123 are respectively hinged to the rear wheel frame 4.

[0052] In this embodiment, the structure is designed ingeniously and reasonably, so that the overall volume after folding is smaller. The foldable frame is not only suitable for a hand-push stroller, but also suitable for a tourist vehicle for carrying sundries and camping, and can also carry appropriate weight of articles to the seaside or any place.

[0053] Further, as a preferred embodiment of the present scheme but not limited, the sliding end of the front sliding rod member 132 is slidingly installed on the front wheel frame vertical rod 33 in the height direction of the front wheel frame vertical rod 33, and the sliding end of the rear sliding rod member 133 is slidingly installed on the rear wheel frame vertical rod 43 in the height direction of the rear wheel frame vertical rod 43.

[0054] In this embodiment, when the front sliding rod member 132 and the rear sliding rod member 133 slide in the height direction of the front wheel frame vertical rod 33 and the rear wheel frame vertical rod 43 respectively, the fixing and unlocking of the sliding rod member are realized through the limiting member and the elastic element of the front locking assembly 21 and the rear locking assembly 22. The first limiting socket 213 and the second limiting socket 223 are respectively arranged on the front wheel frame vertical rod and the rear wheel frame vertical rod. When the second limiting member 212 and the fourth limiting member 222 are respectively clamped into the first limiting socket 213 and the second limiting socket 223, the front sliding rod member 132 and the rear sliding rod member 133 are fixed, forming a stable support structure. When unlocking is needed, the second limiting member 212 and the fourth limiting member 222 are respectively pulled away from the first limiting socket 213 and the second limiting socket 223 by the movable sleeve member 231 of the unlocking assembly 23 pulling the front pull line 233 and the rear pull line 235, so that the sliding rod member is unlocked and can slide in the height direction of the wheel frame vertical rod.

[0055] Further, as a preferred embodiment of the present scheme but not limited, when the frame body 1 is unfolded, the front support rod member 134 and the rear support rod member 135 are respectively perpendicular to the front lower rod member 121 and the rear lower rod member 122.

[0056] In this embodiment, when the front support rod member 134 and the rear support rod member 135 are respectively perpendicular to the front lower rod member 121 and the rear lower rod member 122, a stable support structure is formed, effectively dispersing and bearing the pressure generated when a child is riding or a heavy object is carried, avoiding damage to the support rod, and improving the safety and stability of the stroller. The beneficial effects of this design are that it not only provides stronger support, but also simplifies the folding and unfolding operation process, and improves the user experience.

[0057] Further, as a preferred embodiment of the present scheme but not limited, the front sliding rod 132 and the rear sliding rod 133 comprise an extension section 1321 and a curved section 1322 arranged in sequence from the hinge 131 to the lower frame group 12, the curved section 1322 is curved towards the lower frame group 12, and the front support rod 134 and the rear support rod 135 are respectively hinged at the extension section 1321.

[0058] In the present embodiment, through the design of the extension section 1321 and the curved section 1322, the extension section 1321 of the front sliding rod 132 and the rear sliding rod 133 provides sufficient support length extending to both sides of the front lower rod and the rear lower rod, and the curved section 1322 makes the trolley more stable when bearing heavy objects. This design not only enhances the support force, but also makes the folding and unfolding process of the trolley more smooth, reduces the operation difficulty, and improves the user experience.

[0059] The working principle of the present embodiment is as follows:

[0060] The folding trolley of the present application, by hingedly arranging the front sliding rod and the rear sliding rod between the upper frame group and the lower frame group, and hingedly arranging the front support rod and the rear support rod between the lower frame group and the front sliding rod and the rear sliding rod respectively to form a double-level hinge structure, improves the overall structural strength and stability of the folding trolley when unfolded: in the unfolded state, the front and rear sliding rods are installed in a sliding manner along the frame body, combined with the multidirectional hinge layout of the front and rear support rods, forming a symmetrical triangular mechanical support system, the maximum compression resistance is improved to 2-3 times of that of the traditional single-layer folding structure, significantly enhancing the support force of the folding trolley.

[0061] The above is an embodiment provided in combination with specific content, and it is not intended that the specific implementation of the present application is limited to these descriptions. Any similar structure or method as the present application, or any technical deduction or replacement made on the basis of the concept of the present application, should be considered as the protection scope of the present application.

Claims

1. A folding stroller, characterized in that, Comprise: Frame body (1), the frame body (1) includes upper frame group (11), front upper bar (111), rear upper bar (112) and the upper connecting bar (113) hinged with the front upper bar (111) and the rear upper bar (112) respectively at both ends; Lower frame group (12) comprising front lower bar (121), rear lower bar (122) and lower connecting bar (123) hinged with the front lower bar (121) and the rear lower bar (122) respectively at both ends; Support frame group (13) comprising hinge (131) arranged between the upper frame group (11) and the lower frame group (12), front sliding bar (132) and rear sliding bar (133) arranged on both sides of hinge (131) respectively, front support bar (134) hinged with the front sliding bar (132) and the front lower bar (121) respectively at both ends, and rear support bar (135) hinged with the rear sliding bar (133) and the rear lower bar (122) respectively at both ends, one end of the front sliding bar (132) is hinged with the hinge (131), and the other end is slidingly installed on one side of the frame body (1), one end of the rear sliding bar (133) is hinged with the hinge (131), and the other end is slidingly installed on the other side of the frame body (1); Release lock mechanism (2) comprising front locking assembly (21) for limiting sliding of the front sliding bar (132), rear locking assembly (22) for limiting sliding of the rear sliding bar (133), and unlocking assembly (23) for unlocking the front locking assembly (21) and the rear locking assembly (22).

2. A folding stroller according to claim 1, wherein, The sliding end of the front sliding bar (132) is slidingly installed on the front lower bar (121) along the length direction of the front lower bar (121), and the sliding end of the rear sliding bar (133) is slidingly installed on the rear lower bar (122) along the length direction of the rear lower bar (122).

3. A folding stroller according to claim 1, wherein, The front locking assembly (21) comprises a first limiting member (211) arranged on the front lower rod member (121) and used for limiting the sliding end of the front sliding rod member (132) to slide away from the lower connecting rod member (123), a second limiting member (212) arranged in the front sliding rod member (132) and movably extended out of the front sliding rod member (132) at the sliding end of the front sliding rod member (132), a first limiting aperture (213) arranged on the front lower rod member (121) and used for allowing the second limiting member (212) to be clamped in to limit the front sliding rod member (132) to slide along the length direction of the front lower rod member (121), and a first elastic element (214) arranged between the front sliding rod member (132) and the second limiting member (212) and used for pushing the extended end of the second limiting member (212) to keep extending out of the front sliding rod member (132). When the lower frame group (12) is unfolded, the sliding end of the front sliding rod member (132) slides to the position where the second limiting member (212) is clamped in the first limiting aperture (213) to fix the sliding end of the front sliding rod member (132).

4. A folding stroller according to claim 3, wherein, The rear locking assembly (22) comprises a third limiting member (221) arranged on the rear lower rod member (122) and used for limiting the sliding end of the rear sliding rod member (133) to slide away from the lower connecting rod member (123), a fourth limiting member (222) arranged in the rear sliding rod member (133) and movably extended out of the rear sliding rod member (133) at the sliding end of the rear sliding rod member (133), a second limiting aperture (223) arranged on the rear lower rod member (122) and used for allowing the fourth limiting member (222) to be clamped in to limit the rear sliding rod member (133) to slide along the length direction of the rear lower rod member (122), and a second elastic element (224) arranged between the rear sliding rod member (133) and the fourth limiting member (222) and used for pushing the extended end of the fourth limiting member (222) to keep extending out of the rear sliding rod member (133). When the lower frame group (12) is unfolded, the sliding end of the rear sliding rod member (133) slides to the position where the fourth limiting member (222) is clamped in the second limiting aperture (223) to fix the sliding end of the rear sliding rod member (133).

5. A folding stroller according to claim 4, wherein, The unlocking assembly (23) comprises a movable sleeve (231) movably sleeved on the hinge (131), a first limiting column (232) provided in the front sliding rod (132) and penetrating through the second limiting piece (212), and a front pull wire (233) having one end connected with the movable sleeve (231) and the other end connected with the second limiting piece (212), the second limiting piece (212) is provided with a first limiting slot (2121) for the first limiting column (232) to penetrate through so as to limit the extension distance of the second limiting piece (212) relative to the front sliding rod (132), when the movable sleeve (231) moves towards the direction of the upper vehicle frame group (11), the second limiting piece (212) is pulled to move into the front sliding rod (132) by the front pull wire (233), the second limiting piece (212) is separated from the first limiting slot (213) and compresses the first elastic element (214), so as to unlock the restriction of the sliding end of the front sliding rod (132) along the length direction of the front lower rod (121).

6. A folding stroller according to claim 5, wherein, The unlocking assembly (23) further comprises a second limiting column (234) provided in the rear sliding rod (133) and penetrating through the fourth limiting piece (222), and a rear pull wire (235) having one end connected with the movable sleeve (231) and the other end connected with the fourth limiting piece (222), the fourth limiting piece (222) is provided with a second limiting slot (2221) for the second limiting column (234) to penetrate through so as to limit the extension distance of the fourth limiting piece (222) relative to the rear sliding rod (133), when the movable sleeve (231) moves towards the direction of the upper vehicle frame group (11), the fourth limiting piece (222) is pulled to move into the rear sliding rod (133) by the rear pull wire (235), the fourth limiting piece (222) is separated from the second limiting slot (223) and compresses the second elastic element (224), so as to unlock the restriction of the sliding end of the rear sliding rod (133) along the length direction of the rear lower rod (122).

7. The foldable stroller of claim 1, wherein, Further comprising: The front wheel frame (3) comprises a front lower mounting portion (31), a front upper mounting portion (32), and a front wheel frame upright rod (33) connecting the front lower mounting portion (31) and the front upper mounting portion (32); The rear wheel frame (4) comprises a rear lower mounting portion (41), a rear upper mounting portion (42), and a rear wheel frame upright rod (43) connecting the rear lower mounting portion (41) and the rear upper mounting portion (42); The wheel group (5) is provided on the front wheel frame (3) and the rear wheel frame (4); The front upper rod member (111) is hinged to the front wheel frame (3) at an end thereof away from the upper connecting rod member (113), and the front lower rod member (121) is hinged to the front wheel frame (3) at an end thereof away from the lower connecting rod member (123). The rear upper rod member (112) is hinged to the rear wheel frame (4) at an end thereof away from the upper connecting rod member (113), and the rear lower rod member (122) is hinged to the rear wheel frame (4) at an end thereof away from the lower connecting rod member (123).

8. A folding stroller according to claim 7, wherein, The sliding end of the front sliding rod member (132) is slidingly mounted on the front wheel frame vertical rod (33) in the height direction of the front wheel frame vertical rod (33), and the sliding end of the rear sliding rod member (133) is slidingly mounted on the rear wheel frame vertical rod (43) in the height direction of the rear wheel frame vertical rod (43).

9. The foldable stroller of claim 1, wherein, When the main body (1) is unfolded, the front support rod member (134) and the rear support rod member (135) are perpendicular to the front lower rod member (121) and the rear lower rod member (122), respectively.

10. The foldable stroller of claim 1, wherein, The front sliding rod member (132) and the rear sliding rod member (133) comprise an extension section (1321) and a curved section (1322) arranged in sequence from the hinge member (131) to the lower frame group (12). The curved section (1322) is curved towards the lower frame group (12). The front support rod member (134) and the rear support rod member (135) are hinged to the extension section (1321), respectively.

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