Folding structure of baby carriage

Abstract

The utility model relates to the field of baby carriages, in particular to a folding structure of a baby carriage, which comprises a push rod, a roll-over stand arranged on the inner side of the push rod, a rear support leg arranged on the lower side of the push rod, a front support leg arranged on the front side of the rear support leg, a locking mechanism and a folding mechanism. The outer locking cover is turned over downwards with the axis of the middle locking cover as the center by pressing the push rod downwards, meanwhile, the turning frame rotates along with the outer locking cover to push the locking wheel into the inner locking cover, and then the inner locking cover synchronously rotates along with the middle locking cover. At the moment, the inner locking cover downwards pushes the connecting position of the rear support and the pull rod through the connecting rod, then the pull rod and the fixing seat drive the front supporting leg to be backwards close to the rear supporting leg, and then the push rod, the front supporting leg and the rear supporting leg are folded; through the supporting legs and the rear supporting legs, the trolley can stand and is prevented from toppling over, and meanwhile a user can conveniently push the whole folded trolley to move.

Description

Technical Field

[0001] The utility model relates to the field of children's strollers, in particular to a folding structure of a children's stroller. Background Art

[0002] Strollers are an important tool for carrying children on long and short trips and outings. Although current strollers have reached a certain level of design in terms of appearance and comfort, the folding structure of the frame requires pressing multiple locks to complete the folding of the stroller. In addition, the folded volume of the entire stroller is still relatively large, making it inconvenient to place it in the trunk of a vehicle. At the same time, the folded stroller cannot be moved while standing, which in turn affects the mobility of the entire stroller. In addition, the folding operation is relatively cumbersome and slow, which is not conducive to one-handed operation. Utility Model Content

[0003] The purpose of the present utility model is to provide a folding structure for a child stroller in order to solve the above problems.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] A folding structure for a child stroller includes a push rod, an inner frame is provided inside the push rod, a rear support leg is provided on the lower side of the push rod, a front support leg is provided in front of the rear support leg, and further includes a locking mechanism and a folding mechanism;

[0006] The locking mechanism includes an external locking cover, which is fixed to the lower end of the push rod, and a middle locking cover is fixed to the upper end of the front supporting leg and the rear supporting leg, and an internal locking cover is provided on the side of the middle locking cover away from the external locking cover to fix the inner frame, a flip frame is provided between the external locking cover and the middle locking cover, and a locking wheel is provided between the internal locking cover and the middle locking cover, a first locking groove is provided inside the middle locking cover, a second locking groove is provided inside the internal locking cover at a position opposite to the first locking groove, a rotating sleeve is provided at the center of the locking wheel and penetrates into the center of the middle locking cover, a second arc block is fixed on the outside of the rotating sleeve, and a first arc block cooperating with the second arc block is provided on the side of the flip frame close to the middle locking cover;

[0007] The folding mechanism includes a connecting rod, the upper end of the connecting rod is rotatably connected to the internal locking cover, the lower end of the connecting rod is rotatably connected to the rear support, the front end of the rear support is rotatably connected to the pull rod, the front end of the pull rod is rotatably connected to the front support, and a fixed seat is fixed on the outside of the pull rod.

[0008] Preferably, a turning groove is provided at the connection position between the middle locking cover and the upper end of the front supporting leg, the middle locking cover is rotatably connected to the upper end of the front supporting leg, and an armrest frame is fixed to the front side of the middle locking cover.

[0009] Preferably, a groove cooperating with the second locking groove and the first locking groove is formed on the outer side of the locking wheel, and a spring is fixed on a side of the locking wheel away from the middle locking cover.

[0010] Preferably, the fixing seat is rotatably connected to the upper side of the front supporting leg, and the rear end of the rear support seat is rotatably connected to the rear supporting leg.

[0011] Preferably, the rear end of the rear support is rotatably connected to the upper side of the rear support leg, two universal wheels are fixed to the lower end of the front support leg, and a rotating wheel is fixed to the lower end of the rear support leg.

[0012] Preferably, the outer locking cover, the middle locking cover and the inner locking cover are coaxially arranged.

[0013] The beneficial effects compared with the existing technology are as follows: by pressing the push rod downward, the outer locking cover is flipped downward with the middle locking cover axis as the center, and at the same time, the flip frame follows the rotation of the outer locking cover to push the locking wheel toward the inside of the inner locking cover, and then the inner locking cover will rotate synchronously with the middle locking cover. At this time, the inner locking cover pushes the connection position of the rear support and the pull rod downward through the connecting rod, and then the pull rod and the fixed seat drive the front support legs backward and close to the rear support legs, and then the push rod, front support legs and rear support legs are closed and folded. The support legs and rear support legs can make the trolley stand up to prevent it from tipping over, and it is also convenient for the user to push the entire folded trolley to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a structural diagram of a folding structure of a child stroller according to the present invention;

[0016] Figure 2 This is a side view of the folding structure of a child stroller according to the present invention;

[0017] Figure 3 This is a partial parts diagram of the folding mechanism of the folding structure of a child stroller described in the utility model;

[0018] Figure 4 This is a partial parts diagram of the locking mechanism of the folding structure of a child stroller described in the utility model;

[0019] Figure 5 This is a diagram showing the cooperation between the push rod and the external locking cover of the folding structure of the child stroller described in the utility model;

[0020] Figure 6 This is a partial parts diagram of the second locking groove of the folding structure of the child stroller described in the utility model;

[0021] Figure 7 This is a partial parts diagram of the inner locking cover of the folding structure of the child stroller described in the utility model;

[0022] Figure 8 This is a partial parts diagram of the first arc-shaped block of the folding structure of the child stroller described in the utility model;

[0023] Figure 9 This is a diagram showing the coordination of the locking wheels and the flip frame of the folding structure of the child stroller described in the present invention;

[0024] Figure 10 This is a partial parts diagram of the first locking groove of the folding structure of a child stroller described in the utility model.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Push rod; 2. Front support leg; 3. Rear support leg; 4. Locking mechanism; 5. Folding mechanism; 6. Inner frame; 7. Armrest frame; 41. External locking cover; 42. Flip frame; 43. Middle locking cover; 44. Locking wheel; 45. Internal locking cover; 51. Connecting rod; 52. Rear support; 53. Fixed seat; 54. Front support; 55. Pull rod; 421. First arc block; 441. Second arc block; 431. First locking slot; 432. Flip slot; 451. Second locking slot. DETAILED DESCRIPTION

[0027] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] The present invention will be further described below with reference to the accompanying drawings:

[0029] like Figures 1-10 As shown, a folding structure of a children's stroller includes a push rod 1, an inner frame 6 is provided on the inner side of the push rod 1, a rear support leg 3 is provided on the lower side of the push rod 1, a front support leg 2 is provided on the front side of the rear support leg 3, two universal wheels are fixed to the lower end of the front support leg 2, a rotating wheel is fixed to the lower end of the rear support leg 3, and also includes a locking mechanism 4 and a folding mechanism 5.

[0030] In this embodiment, the locking mechanism 4 includes an external locking cover 41, which is fixed to the lower end of the push rod 1, and a middle locking cover 43 is fixed to the upper end of the front support leg 2 and the rear support leg 3. The middle locking cover 43 is provided with an internal locking cover 45 for fixing the inner frame 6 on the side away from the external locking cover 41. The external locking cover 41, the middle locking cover 43 and the internal locking cover 45 are coaxially arranged, and a flip frame 42 is provided between the external locking cover 41 and the middle locking cover 43. The internal locking cover 45 and the middle locking cover are fixed to the upper end of the front support leg 2 and the rear support leg 3. A locking wheel 44 is provided between the fixed covers 43, a first locking groove 431 is provided inside the middle locking cover 43, a second locking groove 451 is provided inside the inner locking cover 45 at a position opposite to the first locking groove 431, a rotating sleeve is provided at the center of the locking wheel 44 to penetrate the center of the middle locking cover 43, a second arc block 441 is fixed on the outside of the rotating sleeve, a first arc block 421 is provided on the side of the flip frame 42 close to the middle locking cover 43 to cooperate with the second arc block 441, and a second arc block 421 is provided on the outside of the locking wheel 44 to cooperate with the second arc block 441 The fixed groove 451 and the first locking groove 431 match the groove, and a spring is fixed to the side of the locking wheel 44 away from the middle locking cover 43. The middle locking cover 43 is connected to the upper end of the front support leg 2 at a turning groove 432. The middle locking cover 43 is rotatably connected to the upper end of the front support leg 2. The front side of the middle locking cover 43 is fixed with an armrest frame 7. By pressing the upper end of the push rod 1, the upper side of the outer locking cover 41 is turned downward with the axis of the middle locking cover 43 as the center, and then the turning frame 42 is driven by the middle locking cover 43 to lock. The fixed wheel 44 rotates around the rotating sleeve, and then the first arc block 421 on the flip frame 42 pushes the second arc block 441, and then the locking wheel 44 moves to the second locking groove 451 in the internal locking cover 45, and then the locking wheel 44 disengages from the first locking groove 431 and is stuck in the second locking groove 451. As the flip frame 42 continues to rotate, the locking wheel 44 and the internal locking cover 45 are driven to rotate synchronously, and then under the action of the internal locking cover 45, the inner frame 6 is driven to flip downward synchronously with the push rod 1.

[0031] When the folding mechanism 5 is in the form of a folding block 52, the folding mechanism 5 is in the form of a folding block 53. The folding mechanism 5 is in the form of a folding block 53. When the folding mechanism 5 is in the form of a folding block 53, the folding mechanism 5 is in the form of a folding block 53. When the folding mechanism 5 is in the form of a folding block 53, the folding mechanism 5 is in the form of a folding block 53.

[0032] Working principle: When in use, by pressing the upper end line of the push rod 1 downward, the upper side of the outer locking cover 41 is flipped downward with the axis of the middle locking cover 43 as the center, and then the flip frame 42 is driven by the middle locking cover 43 to rotate with the locking wheel 44 rotating sleeve as the center, and then the first arc block 421 on the flip frame 42 pushes the second arc block 441, and then the locking wheel 44 moves to the second locking groove 451 in the inner locking cover 45, and then the locking wheel 44 disengages from the first locking groove 431 and is stuck in the second locking groove 451. As the flip frame 42 continues to rotate, the locking wheel 44 and the inner locking cover 45 are driven to rotate synchronously, and then under the action of the inner locking cover 45, the inner frame 6 is driven to flip downward synchronously with the push rod 1;

[0033] The inner locking cover 45 is turned downward to drive the connecting rod 51 to push downward. At this time, the connecting rod 51 pushes the connection position of the rear support 52 and the pull rod 55 downward, and then the front end of the pull rod 55 is turned and closed toward the rear end of the rear support 52. At this time, the fixed seat 53 is turned synchronously with the pull rod 55, and then the fixed seat 53 drives the front support leg 2 to turn backward with the turning groove 432 as the center, and then the rear support leg 3 and the front support leg 2 are closed. Then, the push rod 1 and the inner frame 6 are simultaneously turned downward and closed with the rear support leg 3, and the folding process of the entire cart is completed.

[0034] When the trolley needs to be opened, the push rod 1 is flipped upward to allow the outer locking cover 41 to flip upward with the middle locking cover 43 as the axis, and then the flip frame 42 rotates in the opposite direction following the upward flip of the outer locking cover 41. At this time, since the first arc block 421 and the second arc block 441 of the flip frame 42 and the locking wheel 44 are engaged with each other, the flip frame 42 rotates in the opposite direction to drive the inner locking cover 45 to flip upward following the outer locking cover 41 through the locking wheel 44. When the first arc block 421 of the flip frame 42 disengages from the second arc block 44 When the handle 41 is pushed, the spring of the locking wheel 44 pushes it to be locked in the first locking groove 431 of the fixing seat 53. At this time, as the internal locking cover 45 flips, the connecting rod 51 is driven to move upward, and then the connection position of the rear support 52 and the pull rod 55 moves upward, so that the front end of the pull rod 55 moves away from the rear end of the rear support 52, and then the closed rear support 52 and the pull rod 55 are extended. At this time, the fixing seat 53 follows the pull rod 55 to drive the front support leg 2 to move forward, and then the whole trolley is unfolded.

[0035] In addition, the folded trolley can stand up by means of the two universal wheels of the supporting legs 2 and the two rotating wheels of the rear supporting legs 3, so as to avoid the trolley from tipping over and also facilitate the user to push the entire folded trolley to move.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements shall fall within the scope of the present invention as claimed.

Claims

1. A folding structure for a child stroller, comprising a push rod (1), an inner frame (6) provided on the inner side of the push rod (1), a rear support leg (3) provided on the lower side of the push rod (1), and a front support leg (2) provided on the front side of the rear support leg (3), characterized in that: It also includes a locking mechanism (4) and a folding mechanism (5); The locking mechanism (4) includes an external locking cover (41), the external locking cover (41) is fixed to the lower end of the push rod (1), the upper end of the front support leg (2) and the upper end of the rear support leg (3) are fixed with a middle locking cover (43), the side of the middle locking cover (43) away from the external locking cover (41) is provided with an internal locking cover (45) for fixing the inner frame (6), a flip frame (42) is provided between the external locking cover (41) and the middle locking cover (43), the internal locking cover (45) and the middle locking cover (43) are fixed to the inner frame (6), and the flip frame (42) is provided between the external locking cover (41) and the middle locking cover (43). A locking wheel (44) is provided between the middle locking cover (43), a first locking groove (431) is provided inside the middle locking cover (43), a second locking groove (451) is provided inside the inner locking cover (45) at a position opposite to the first locking groove (431), a rotating sleeve is provided at the center of the locking wheel (44) and penetrates into the center of the middle locking cover (43), a second arc block (441) is fixed on the outside of the rotating sleeve, and a first arc block (421) that cooperates with the second arc block (441) is provided on a side of the flip frame (42) close to the middle locking cover (43); The folding mechanism (5) includes a connecting rod (51), the upper end of the connecting rod (51) is rotatably connected to the internal locking cover (45), the lower end of the connecting rod (51) is rotatably connected to the rear support (52), the front end of the rear support (52) is rotatably connected to the pull rod (55), the front end of the pull rod (55) is rotatably connected to the front support (54), and a fixed seat (53) is fixed to the outside of the pull rod (55).

2. The folding structure of a child stroller according to claim 1, characterized in that: A turning groove (432) is provided at the connection position between the middle locking cover (43) and the upper end of the front supporting leg (2), the middle locking cover (43) is rotatably connected to the upper end of the front supporting leg (2), and an armrest frame (7) is fixed to the front side of the middle locking cover (43).

3. The folding structure of a child stroller according to claim 1, characterized in that: A groove cooperating with the second locking groove (451) and the first locking groove (431) is formed on the outer side of the locking wheel (44), and a spring is fixed on the side of the locking wheel (44) away from the middle locking cover (43).

4. The folding structure of a child stroller according to claim 1, characterized in that: The fixing seat (53) is rotatably connected to the upper side of the front support leg (2), and the rear end of the rear support seat (52) is rotatably connected to the rear support leg (3).

5. The folding structure of a child stroller according to claim 1, characterized in that: The rear end of the rear support (52) is rotatably connected to the upper side of the rear support leg (3); two universal wheels are fixed to the lower end of the front support leg (2); and a rotating wheel is fixed to the lower end of the rear support leg (3).

6. The folding structure of a child stroller according to claim 1, characterized in that: The outer locking cover (41), the middle locking cover (43) and the inner locking cover (45) are coaxially arranged.

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