Folding stroller frame and infant stroller

Abstract

The folding stroller frame comprises a frame structure composed of four stand columns, an upper frame and a lower frame, the lower frame comprises a left frame body and a right frame body which are hinged to each other, and the other end of the left frame body and the other end of the right frame body are movably connected to the stand columns; the upper frame comprises a long square frame composed of two long rods and two cross rods, the cross rods are fixedly connected to the stand columns, the long rods are movably connected to the stand columns, each long rod is divided into a left section and a right section, and a folding joint is arranged between the left section and the right section; a left diagonal draw bar and a right diagonal draw bar are movably connected to the hinged position of the left frame body and the right frame body, the other ends of the left diagonal draw bar and the right diagonal draw bar are movably connected to the stand column in a sleeved mode, a supporting rod is hinged to the middle of the left diagonal draw bar and the middle of the right diagonal draw bar, and the other end of the supporting rod is movably connected to the stand column. The long rod is slidably sleeved with inclined rods on the two sides of the folding joint, and the other ends of the inclined rods are hinged to the stand column. Folding and unfolding of the stroller frame are achieved through the folding joints, operation is convenient, other accessories are not needed for use in a matched mode, and convenience and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of infant strollers, in particular to a foldable stroller frame and an infant stroller. Background Art

[0002] A baby stroller is a load-bearing mobile tool vehicle designed to provide convenience for outdoor activities of infants and young children. It can reduce the workload of supervision and is becoming more and more widely used.

[0003] The infant stroller disclosed in the prior art generally includes a frame, a seat fixed on the frame, front wheels and rear wheels at the lower end of the frame, and a handle installed on the frame. The existing frames are generally foldable structures, but the folding and unfolding operations of the frames are complicated and inconvenient to use. In addition, during the folding and unfolding process, the connecting parts need to be disassembled and installed, which is troublesome to operate. Moreover, in order to facilitate folding, the strength of the frame is difficult to ensure. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems and provides a stroller frame and an infant stroller which are easy to fold and have high force-bearing strength.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a foldable cart frame, which includes a frame structure composed of four columns, an upper frame and a lower frame, the lower frame includes a left and a right frame body hinged to each other, and the other ends of the left and the right frame bodies are movably connected to the column; the upper frame includes a long square frame composed of two long rods and two cross rods, the cross rods are fixedly connected to the column, the long rods are movably connected to the column, and the long rods are divided into left and right sections, and a folding joint is arranged between the two sections; the left and right frame bodies are movably connected with left and right oblique tie rods at the hinges, the other ends of the left and right oblique tie rods are respectively movably sleeved on the columns, the middle parts of the left and right oblique tie rods are hinged with support rods, and the other ends of the support rods are movably connected to the columns; the long rods are located on both sides of the folding joint and are respectively slidably sleeved with oblique rods, and the other ends of the oblique rods are hinged on the columns.

[0006] Preferably, the folding joint includes a shell hinged between the left and right sections of the long rod, the shell is provided with left and right strip holes and a hinge hole located in the middle and lower part of the left and right strip holes, a locking piece is connected to the bottom of the shell through three hinge columns, the locking piece is provided with three long holes distributed in a Y shape, the long holes respectively correspond to the left and right strip holes and the hinge holes, and are respectively penetrated by hinge columns, an elastic element is provided between the shell and the locking piece, and the end surfaces of the left and right sections of the long rod are provided with hooks that are clamped on the hinge columns.

[0007] Preferably, a positioning convex strip is provided on the surface of the locking piece, and a limiting groove corresponding to the positioning convex strip is provided on the inner surface of the shell.

[0008] Preferably, the elastic element is a spring.

[0009] Preferably, the locking member is provided with a mounting groove for mounting a spring.

[0010] Preferably, a receiving groove for accommodating a spring is provided in the housing.

[0011] Preferably, rollers are provided at the bottom of the frame structure.

[0012] Preferably, a handle is provided on one side of the frame.

[0013] Preferably, the handle is a foldable structure.

[0014] The utility model discloses a baby stroller, which comprises the above-mentioned foldable stroller frame.

[0015] The utility model has at least the following beneficial effects: the utility model realizes the folding and unfolding of the stroller frame through folding joints, the operation is easy, no other accessories are required for use, and it is convenient and reliable. In addition, the use of left and right diagonal rods, support rods and diagonal rods effectively enhances the force strength of the entire frame and ensures the stability of the product, so that it is widely used in the production of infant strollers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 for Figure 1 Enlarged view of point A. DETAILED DESCRIPTION

[0019] Reference Figure 1 A foldable cart frame includes a frame structure consisting of four columns 1, an upper frame 2 and a lower frame 3. A roller 8 is arranged at the bottom of the frame structure. A handle 9 is arranged on one side of the frame. In order to facilitate storage, the handle 9 is a foldable structure.

[0020] In order to facilitate folding, the lower frame 3 includes left and right frames 31 and 32 that are hinged to each other, and the other ends of the left and right frames 31 and 32 are movably connected to the column 1. The hinges of the left and right frames 31 and 32 are movably connected with left and right diagonal rods 41 and 42, and the other ends of the left and right diagonal rods 41 and 42 are respectively movably sleeved on the column 1. The middle parts of the left and right diagonal rods 41 and 42 are hinged with support rods 5, and the other ends of the support rods 5 are movably connected to the column 1. The use of the left and right diagonal rods 41 and 42 and the support rods 5 effectively enhances the force strength between the lower frame 3 and the column 1.

[0021] The upper frame 2 includes a long square frame composed of two long rods 21 and two cross rods 22, the cross rods 22 are fixedly connected to the column 1, the long rod 21 is movably connected to the column 1, the long rod 21 is divided into left and right sections, and a folding joint 7 is provided between the two sections; the long rod 21 is located on both sides of the folding joint 7 and is slidably sleeved with an inclined rod 6, and the other end of the inclined rod 6 is hinged to the column 1. The use of the inclined rod 6 increases the force strength between the upper frame 2 and the column 1, thereby making the entire cart frame more solid.

[0022] Reference Figure 2 The folding joint 7 includes a shell 71 hinged between the left and right sections of the long rod 21, the shell 71 is provided with left and right strip holes 711, 712 and a hinge hole 713 located in the middle and lower part of the left and right strip holes 711, 712, a locking piece 73 is connected to the lower part of the shell 71 through three hinge columns 72, and three long holes 731, 732, 733 distributed in a Y shape are provided on the locking piece 73, the long holes 731, 732, 733 correspond to the left and right strip holes 711, 712 and the hinge hole 713, respectively, and are respectively penetrated by the hinge columns 72, an elastic element 74 is provided between the shell 71 and the locking piece 73, and the elastic element 74 is a spring, and the end surfaces of the left and right sections of the long rod 21 are provided with hooks 211 that are clamped on the hinge columns 72.

[0023] In order to facilitate the installation of the locking member 73 , a positioning convex strip 734 is provided on the surface of the locking member 73 , and a limiting groove corresponding to the positioning convex strip 734 is provided on the inner surface of the shell 71 .

[0024] In order to ensure that the elastic element 74 does not fall off during use, the locking member 73 is provided with a mounting groove 735 for mounting a spring; and the housing 71 is provided with a receiving groove for placing a spring.

[0025] When the product is folded, just press the locking piece 73 on the folding joint 7 so that the locking piece 73 compresses the elastic element 74 and moves upward. During the movement, the hinge column 72 moves from the uppermost end of the long holes 731, 732, and 733 distributed in a Y shape to the lowermost end of the Y shape, so that the hook 211 on the long rod 21 is free from the restriction of the hinge column 72, so that the left and right sections of the long rod 21 can be folded; during the folding process of the long rod 21, one end of the diagonal rod 6 moves along the long rod 21 to achieve storage. In addition, the left and right diagonal rods 41 and 42 at the lower end move upward along the column 1, thereby driving the left and right frames 31 and 32 to fold toward the middle, thereby achieving folding and storage of the entire frame.

[0026] A baby stroller comprises the above-mentioned foldable stroller frame, and the baby stroller can be formed by simply installing a fence and a seat cushion on the frame.

[0027] The utility model realizes the folding and unfolding of the stroller frame through the folding joint 7, which is easy to operate and does not require other accessories for use. It is convenient and reliable. In addition, the use of left and right diagonal rods 41, 42, support rods 5 and diagonal rods 6 effectively enhances the force strength of the entire frame and ensures the stability of the product, so it is widely used in the production of infant strollers.

[0028] The above embodiments are only used to illustrate the technical solution of the utility model but not to limit it. Any modification or equivalent substitution that does not deviate from the spirit and scope of the utility model shall be included in the scope of the technical solution of the utility model.

Claims

1. A foldable stroller frame, characterized in that: The invention comprises a frame structure consisting of four columns (1), an upper frame (2) and a lower frame (3). The lower frame (3) comprises left and right frames (31, 32) hinged to each other, and the other ends of the left and right frames (31, 32) are movably connected to the upright column (1); The upper frame (2) comprises a long square frame composed of two long rods (21) and two cross rods (22), wherein the cross rods (22) are fixedly connected to the upright column (1), and the long rod (21) is movably connected to the upright column (1), and the long rod (21) is divided into two sections, a left section and a right section, and a folding joint (7) is provided between the two sections; The left and right frames (31, 32) are movably connected at their hinged locations with left and right diagonal tie rods (41, 42), the other ends of the left and right diagonal tie rods (41, 42) are movably sleeved on the columns (1) respectively, the middle parts of the left and right diagonal tie rods (41, 42) are hinged with support rods (5), the other ends of the support rods (5) are movably connected to the columns (1); The long rod (21) is located on both sides of the folding joint (7) and is slidably sleeved with an inclined rod (6), and the other end of the inclined rod (6) is hinged on the column (1).

2. A foldable stroller frame according to claim 1, characterized in that: The folding joint (7) comprises a housing (71) hinged between the left and right sections of the long rod (21); the housing (71) is provided with left and right strip holes (711, 712) and a hinge hole (713) located at the middle and lower part of the left and right strip holes (711, 712); a locking piece (73) is connected to the lower part of the housing (71) through three hinged columns (72); the locking piece (73) is provided with three long holes (711, 712) arranged in a Y shape. 731, 732, 733), the long holes (731, 732, 733) respectively correspond to the left and right strip holes (711, 712) and the hinge hole (713), and are respectively penetrated by hinge columns (72), an elastic element (74) is arranged between the shell (71) and the locking member (73), and the end surfaces of the left and right sections of the long rod (21) are provided with hooks (211) that are clamped on the hinge column (72).

3. A foldable stroller frame according to claim 2, characterized in that: The surface of the locking piece (73) is provided with a positioning convex strip (734), and the inner surface of the housing (71) is provided with a limiting groove corresponding to the positioning convex strip (734).

4. A foldable stroller frame according to claim 2, characterized in that: The elastic element (74) is a spring.

5. A foldable stroller frame according to claim 4, characterized in that: The locking member (73) is provided with an installation groove (735) for installing a spring.

6. A foldable stroller frame according to claim 5, characterized in that: The housing (71) is provided with a receiving groove for accommodating a spring.

7. A foldable stroller frame according to claim 1, characterized in that: A roller (8) is arranged at the bottom of the frame structure.

8. A foldable stroller frame according to claim 1, characterized in that: A handle (9) is provided on one side of the frame.

9. A foldable stroller frame according to claim 8, characterized in that: The handle (9) is a foldable structure.

10. An infant stroller comprising the foldable stroller frame according to any one of claims 1 to 9.

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