Stroller framework

Abstract

The utility model discloses a stroller framework. The upper end of a rear frame and the upper end of a front frame are rotatably connected around a first axis A; the lower end of the supporting rod is rotatably connected with the upper end of the front frame or the rear frame around a second axis; the position close to the lower end of the hand push rod is rotatably connected with the upper end of the support rod around a third axis C; the upper end of the first transmission rod is rotatably connected with the lower end of the hand push rod around a fourth axis D, and the position, close to the lower end, of the first transmission rod is rotatably connected with the rear frame around a fifth axis E; one end of the second transmission rod is rotatably connected with the front frame around a sixth axis F, and the other end of the second transmission rod is rotatably connected with the lower end of the first transmission rod around a seventh axis G; the handrail is rotatably connected with the supporting rod around an eighth axis H, and a linkage rod rotatably connected with the handrail and the first transmission rod is arranged between the rear end of the handrail and the first transmission rod; the transverse supporting rod is arranged on the supporting rod and the first transmission rod in the left-right transverse direction. The folding chair is simple in structure, convenient to fold and small in size after being folded.

Description

[Technical field]

[0001] The utility model relates to a child stroller frame. [Background technology]

[0002] Strollers are common products for children during their growth. Current strollers can generally be unfolded or folded, and can be stored or carried when folded. There are many types of strollers on the market, and various types of strollers emerge in an endless stream. The connection positions and movement principles of the rod structures are also different, and the sizes after folding are also different.

[0003] However, those skilled in the art are constantly pursuing a child stroller with a simple structure, convenient folding and a small volume after folding. Therefore, the present utility model is produced based on this. [Contents of the utility model]

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a child stroller frame which has a simple structure, is convenient to fold and has a small volume after folding.

[0005] The utility model is realized by the following technical solutions:

[0006] A child stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, comprises:

[0007] A front frame 1, wherein the lower end of the front frame 1 is connected to a front wheel 1a;

[0008] A rear frame 2, wherein the lower end of the rear frame 2 is connected to a rear wheel 2a, and the upper end of the rear frame 2 is rotatably connected to the upper end of the front frame 1 around a first axis A;

[0009] A support rod 3, wherein the lower end of the support rod 3 is rotatably connected to the upper end of the front frame 1 or the rear frame 2 around a second axis B;

[0010] A push rod 4, wherein the push rod 4 is rotatably connected to the upper end of the support rod 3 around a third axis C near its lower end;

[0011] A first transmission rod 5, wherein the upper end of the first transmission rod 5 is rotatably connected to the lower end of the push rod 4 around a fourth axis D, and the upper end of the first transmission rod 5 and a position close to the lower end thereof are rotatably connected to the rear frame 2 around a fifth axis E;

[0012] A second transmission rod 6, one end of which is rotatably connected to the front frame 1 around a sixth axis F, and the other end of which is rotatably connected to the lower end of the first transmission rod 5 around a seventh axis G;

[0013] A U-shaped handrail 8, wherein the handrail 8 is rotatably connected to the support rod 3 around an eighth axis H, and a linkage rod 9 rotatably connected to the rear end of the handrail 8 and the first transmission rod 5 is provided between the two.

[0014] A cross brace 13 for supporting the seat, wherein the cross brace 13 is arranged on the support rod 3 and the first transmission rod 5 along the left-right lateral direction.

[0015] The first transmission rod 5 includes an upper rod 51 and a lower rod 52 bent relative to the upper rod 51 . The lower rod 52 is provided with a protruding portion 53 protruding upward. The protruding portion 53 is rotatably connected to the rear frame 2 around the fifth axis E.

[0016] The stroller frame also includes a U-shaped frame 10 for hanging a storage basket. The open end of the U-shaped frame 10 is connected to the lower rod 52 by rivets. The lower rod 52 is also provided with a positioning groove 54. The U-shaped frame 10 is clamped in the positioning groove 54 near the open end.

[0017] A carrying rod 11 capable of carrying the bottom of the storage basket is provided on the frame 2 and below the U-shaped frame 10 .

[0018] The armrest 8 includes an armrest rod 81, a protruding connecting portion 82 is provided on one side of the armrest rod 81, a detachable U-shaped handle 83 is connected to the front end of the armrest rod 81, and the rear end of the armrest rod 81 is connected to the linkage rod 9. The armrest 8 is rotatably connected to the support rod 3 around the eighth axis H through the connecting portion 82.

[0019] The locking device includes a first connecting shell 101 arranged on the hand push rod 4 and a second connecting shell 102 arranged on the first transmission rod 5. The first connecting shell 101 and the second connecting shell 102 are provided with a plurality of locking grooves 103 in a circumferential direction. A locking gear 104 is provided in the space enclosed by the first connecting shell 101 and the second connecting shell 102, which can move laterally therein and can engage with the locking grooves 103 on the first connecting shell 101 and the second connecting shell 102 at the same time. A movable part 105 is provided between the locking gear 104 and the second connecting shell 102, which can rotate and push the locking gear 104 to disengage from the locking grooves 103 on the second connecting shell 102 when rotating. A driving part 106 that can drive the movable part 105 to rotate is provided in the hand push rod 4. A reset spring 108 that can push the locking gear 104 to move laterally and reset is also provided between the locking gear 104 and the first connecting shell 101.

[0020] The driving member 106 comprises a pull rope 1061 which is arranged in the push rod 4 and connected to the eccentric position of the movable member 105. The upper end of the push rod 4 is provided with an operating switch 1062 which can pull the pull rope 1061 to move during operation.

[0021] The locking gear 104 is provided with a plurality of inclined grooves 107 with inclined groove walls along the circumferential direction, and the movable part 105 includes a main body 1051, and one side of the main body 1051 is provided with a plurality of inclined protrusions 1052 that match the inclined grooves 107 and can push the inclined groove walls of the inclined grooves 107 when the main body 1051 rotates, thereby causing the locking gear 104 to move laterally.

[0022] A rotating shell 201 that can rotate relative to the second connecting shell 102 is disposed on the outer side thereof, and a shelf rod 202 for supporting the ceiling is disposed on the rotating shell 201 .

[0023] The front frame 1, the rear frame 2 and the support rod 3 are coaxially rotatably connected.

[0024] Compared with the prior art, the utility model has the following advantages:

[0025] 1. When the utility model needs to be folded, the locking device is first unlocked, and then the hand push rod is rotated forward and pressed down, and the hand push rod drives the support rod and the first transmission rod to rotate relative to the rear frame so that the upper ends of the support rod and the upper ends of the first transmission rod are close to the lower end of the rear frame. When the first transmission rod rotates relative to the rear frame, its lower end tilts upward and pulls the second transmission rod, and the second transmission rod pulls the front frame to rotate relative to the rear frame so that the front frame is close to the rear frame. In this process, the first transmission rod drives the linkage rod to move, and the linkage rod drives the armrest to rotate relative to the support rod, so that the armrest is also close to the support rod, and finally the folding of the entire child stroller frame is realized. The entire child stroller frame has a simple structure and few rods. The folding operation is very convenient and quick, and only needs to be turned forward and pressed. Moreover, the folded volume is small and easy to carry.

[0026] 2. The utility model is provided with a U-shaped frame for hanging a storage basket, the open end of the U-shaped frame is connected to the lower rod by rivets, the lower rod is also provided with a positioning groove, and the U-shaped frame is clamped in the positioning groove near the open end. Therefore, the U-shaped frame can be connected by rivets to the ends and supported by the bottom of the positioning groove, so that the U-shaped frame is firmly connected and the connection structure is simple.

[0027] 3. A bearing rod capable of bearing the bottom of the storage basket is provided on the rear frame of the utility model and below the U-shaped frame. When the storage basket made of flexible textile fabric is hung on the U-shaped frame, the bearing rod is connected to the bottom of the storage basket to form a strong support for the storage basket, so that the storage basket will not sag too much when placing items, and the storage basket can be used to place heavier items such as water cups and fruits.

Brief Description of the Drawings

[0028] Figure 1 It is a three-dimensional diagram of the utility model;

[0029] Figure 2 It is a side view of the utility model in the unfolded state;

[0030] Figure 3 It is a cross-sectional view of the utility model;

[0031] Figure 4 It is a side view of the utility model during the folding process;

[0032] Figure 5 It is one of the exploded views of the components of the utility model;

[0033] Figure 6 This is the second exploded view of the components of the utility model;

[0034] Figure 7 It is a side view of the utility model in a folded state;

[0035] Figure 8 yes Figure 1 Magnified view at point I in the middle. [Specific implementation method]

[0036] The utility model is further described below in conjunction with the accompanying drawings:

[0037] As shown in the picture Figure 4 As shown, a child stroller frame can be moved from an unfolded position to a folded position after a locking device is unlocked, comprising:

[0038] A front frame 1, wherein the lower end of the front frame 1 is connected to a front wheel 1a;

[0039] A rear frame 2, wherein the lower end of the rear frame 2 is connected to a rear wheel 2a, and the upper end of the rear frame 2 is rotatably connected to the upper end of the front frame 1 around a first axis A;

[0040] A support rod 3, wherein the lower end of the support rod 3 is rotatably connected to the upper end of the front frame 1 or the rear frame 2 around a second axis B. In this embodiment, the front frame 1, the rear frame 2 and the support rod 3 are coaxially rotatably connected;

[0041] A push rod 4, wherein the push rod 4 is rotatably connected to the upper end of the support rod 3 around a third axis C near its lower end;

[0042] A first transmission rod 5, wherein the upper end of the first transmission rod 5 is rotatably connected to the lower end of the push rod 4 around a fourth axis D, and the upper end of the first transmission rod 5 and a position close to the lower end thereof are rotatably connected to the rear frame 2 around a fifth axis E;

[0043] A second transmission rod 6, one end of which is rotatably connected to the front frame 1 around a sixth axis F, and the other end of which is rotatably connected to the lower end of the first transmission rod 5 around a seventh axis G;

[0044] A U-shaped handrail 8, wherein the handrail 8 is rotatably connected to the support rod 3 around an eighth axis H, and a linkage rod 9 rotatably connected to the rear end of the handrail 8 and the first transmission rod 5 is provided between the two.

[0045] A cross brace 13 for supporting the seat, wherein the cross brace 13 is arranged on the support rod 3 and the first transmission rod 5 along the left-right lateral direction.

[0046] like Figures 1 to 4 As shown, when the child stroller frame needs to be folded, the locking device is first unlocked, and then the hand push rod 4 is rotated forward and pressed down, and the hand push rod 4 drives the support rod 3 and the first transmission rod 5 to rotate relative to the rear frame 2 so that the upper ends of the support rod 3 and the upper ends of the first transmission rod 5 are close to the lower end of the rear frame 2. When the first transmission rod 5 rotates relative to the rear frame 2, its lower end tilts upward and pulls the second transmission rod 6, and the second transmission rod 6 pulls the front frame 1 to rotate relative to the rear frame 2 so that the front frame 1 is close to the rear frame 2. In this process, the first transmission rod 5 drives the linkage rod 9 to move, and the linkage rod 9 drives the armrest 8 to rotate relative to the support rod 3, so that the armrest 8 is also close to the support rod 3, and finally the folding of the entire child stroller frame is realized. The entire child stroller frame has a simple structure, few rods, and the folding operation is very convenient and quick. It only needs to be turned forward and pressed. Moreover, the folded volume is small and easy to carry. The seat of the present invention can adopt a flexible seat pocket to be hung on the support rod 3, or can adopt a transverse cross brace rod 13 arranged on the support rod 3 and the first transmission rod 5 as in the present embodiment to support the seat.

[0047] like Figures 1 to 4 As shown, the first transmission rod 5 comprises an upper rod 51 and a lower rod 52 bent relative to the upper rod 51, the lower rod 52 is provided with a protruding portion 53 protruding upward, and the protruding portion 53 is rotatably connected to the rear frame 2 around the fifth axis E. The first transmission rod 5 is connected to the rear frame 2 via the protruding portion 53 on the lower rod 52, which ensures that the child stroller frame can be folded flexibly while making the child stroller frame structure compact.

[0048] like Figures 1 to 4 As shown, the child stroller frame also includes a U-shaped frame 10 for hanging a storage basket, the open end of the U-shaped frame 10 is connected to the lower section rod 52 by rivets, and the lower section rod 52 is also provided with a positioning groove 54, and the U-shaped frame 10 is clamped in the positioning groove 54 near the open end. The U-shaped frame 10 can be connected by rivets to the ends and supported by the bottom of the positioning groove 54, so that the U-shaped frame 10 is firmly connected and the connection structure is simple.

[0049] A bearing rod 11 capable of bearing the bottom of the storage basket is provided on the rear frame 2 and below the U-shaped frame 10. When a storage basket (not shown in the figure) made of flexible textile fabric is hung on the U-shaped frame 10, the bearing rod 11 is connected to the bottom of the storage basket to form a strong support for the storage basket, so that the storage basket will not sag too much when placing items, and the storage basket can be used to place heavier items such as water cups and fruits.

[0050] like Figures 1 to 4 As shown, the armrest 8 comprises an armrest rod 81, a protruding connection portion 82 is provided on one side of the armrest rod 81, a detachable U-shaped handle 83 is connected to the front end of the armrest rod 81, and the rear end of the armrest rod 81 is connected to the linkage rod 9. The armrest 8 is rotatably connected to the support rod 3 around the eighth axis H through the connection portion 82. The armrest 8 is rotatably connected to the support rod 3 through the connection portion 82 provided on the armrest rod 81 and protruding to one side of the armrest rod 81. When the child stroller frame is folded, the linkage rod 9 drives the armrest 8 to rotate relative to the support rod 3, so that the armrest 8 can be folded flexibly.

[0051] like Figure 1 , Figure 5 and Figure 6As shown, the locking device includes a first connecting shell 101 provided on the hand push rod 4 and a second connecting shell 102 provided on the first transmission rod 5, and a plurality of locking grooves 103 are provided on the first connecting shell 101 and the second connecting shell 102 along the circumferential direction, and a locking gear 104 which can move laterally therein and can be engaged with the locking grooves 103 on the first connecting shell 101 and the second connecting shell 102 at the same time is provided in the space surrounded by the first connecting shell 101 and the second connecting shell 102, and a movable member 105 which can rotate and push the locking gear 104 to disengage from the locking groove 103 on the second connecting shell 102 when rotating is provided between the locking gear 104 and the second connecting shell 102, and a movable member 105 which can drive the movable member 105 is provided in the hand push rod 4. 05 rotating driving member 106, a reset spring 108 capable of pushing the locking gear 104 to move horizontally and reset is also arranged between the locking gear 104 and the first connecting shell 101, the driving member 106 comprises a pull rope 1061 arranged in the hand push rod 4 and connected to the eccentric position of the movable member 105, an operating switch 1062 capable of pulling the pull rope 1061 to move during operation is arranged on the upper end of the hand push rod 4, a plurality of inclined grooves 107 with inclined groove walls are arranged on the locking gear 104 along the circumferential direction, the movable member 105 comprises a main body 1051, a plurality of inclined protrusions 1052 matching with the inclined groove 107 and capable of pushing the inclined groove wall of the inclined groove 107 when the main body 1051 rotates to make the locking gear 104 move horizontally are arranged on one side of the main body 1051. When unlocking the locking device, pressing the operating switch 1062 will pull the pull rope 1061 to move, and the pull rope 1061 will pull the main body 1051 to rotate. During the rotation of the main body 1051, the inclined protrusion 1052 on it will push the locking gear 104 through the inclined groove wall of the inclined groove 107, so that the locking gear 104 moves laterally and disengages from the locking groove 103 on the second connecting shell 102. At this time, the return spring 108 is compressed and the locking device is unlocked. At this time, you can rotate forward and press down the push rod 4 to perform the folding operation of the child stroller frame.

[0052] like Figure 1 and Figure 5 As shown, a rotating shell 201 capable of rotating relative to the second connecting shell 102 is disposed on the outer side thereof, and a shelf rod 202 for supporting the ceiling is disposed on the rotating shell 201 .

Claims

1. A child stroller frame, which can be moved from an unfolded position to a folded position after a locking device is unlocked, characterized in that: include: A front frame (1), wherein the lower end of the front frame (1) is connected to a front wheel (1a); A rear frame (2), wherein the lower end of the rear frame (2) is connected to a rear wheel (2a), and the upper end of the rear frame (2) is rotatably connected to the upper end of the front frame (1) around a first axis (A); A support rod (3), wherein the lower end of the support rod (3) is rotatably connected to the upper end of the front frame (1) or the rear frame (2) around a second axis (B); A push rod (4), wherein the push rod (4) is rotatably connected to the upper end of the support rod (3) around a third axis (C) at a position close to the lower end thereof; A first transmission rod (5), wherein the upper end of the first transmission rod (5) is rotatably connected to the lower end of the push rod (4) around a fourth axis (D), and the upper portion of the first transmission rod (5) and close to the lower end thereof is rotatably connected to the rear frame (2) around a fifth axis (E); A second transmission rod (6), one end of the second transmission rod (6) being rotatably connected to the front frame (1) around a sixth axis (F), and the other end of the second transmission rod (6) being rotatably connected to the lower end of the first transmission rod (5) around a seventh axis (G); A U-shaped handrail (8), wherein the handrail (8) is rotatably connected to the support rod (3) around an eighth axis (H), and a linkage rod (9) rotatably connected to the rear end of the handrail (8) and the first transmission rod (5) is provided between the two; A cross brace (13) for supporting a seat, wherein the cross brace (13) is arranged on a support rod (3) and a first transmission rod (5) along a left-right transverse direction.

2. The child stroller frame according to claim 1, characterized in that: The first transmission rod (5) comprises an upper rod (51) and a lower rod (52) bent relative to the upper rod (51); the lower rod (52) is provided with a protruding portion (53) protruding upward; the protruding portion (53) is rotatably connected to the rear frame (2) around the fifth axis (E).

3. The child stroller frame according to claim 2, characterized in that: It also comprises a U-shaped frame (10) for hanging a storage basket, wherein the open end of the U-shaped frame (10) is connected to the lower rod (52) by a rivet, and the lower rod (52) is also provided with a positioning groove (54), and the U-shaped frame (10) is clamped in the positioning groove (54) near the open end.

4. The child stroller frame according to claim 3, characterized in that: A bearing rod (11) capable of bearing the bottom of the storage basket is provided on the rear frame (2) and below the U-shaped frame (10).

5. The child stroller frame according to claim 1, characterized in that: The handrail (8) comprises a handrail rod (81), one side of the handrail rod (81) is provided with a protruding connecting portion (82), the front end of the handrail rod (81) is connected with a detachable U-shaped handle (83), the rear end of the handrail rod (81) is connected to the linkage rod (9), and the handrail (8) is rotatably connected to the support rod (3) around an eighth axis (H) through the connecting portion (82).

6. The child stroller frame according to claim 1, characterized in that: The locking device comprises a first connecting shell (101) arranged on the hand push rod (4) and a second connecting shell (102) arranged on the first transmission rod (5); the first connecting shell (101) and the second connecting shell (102) are provided with a plurality of locking grooves (103) along the circumferential direction; a locking member (103) which can move laterally therein and can be simultaneously engaged with the locking grooves (103) on the first connecting shell (101) and the second connecting shell (102) is provided in the space enclosed by the first connecting shell (101) and the second connecting shell (102). A gear (104) is provided between the locking gear (104) and the second connecting shell (102), and a movable part (105) is provided between the locking gear (104) and the second connecting shell (102) and can push the locking gear (104) to disengage from the locking groove (103) on the second connecting shell (102) when rotating; a driving part (106) is provided in the hand push rod (4) and can drive the movable part (105) to rotate; and a reset spring (108) is also provided between the locking gear (104) and the first connecting shell (101) and can push the locking gear (104) to move horizontally and reset.

7. The child stroller frame according to claim 6, characterized in that: The driving member (106) comprises a pull rope (1061) arranged in the push rod (4) and connected to an eccentric position of the movable member (105); an operating switch (1062) capable of pulling the pull rope (1061) to move during operation is provided at the upper end of the push rod (4).

8. The child stroller frame according to claim 6, characterized in that: The locking gear (104) is provided with a plurality of inclined grooves (107) with inclined groove walls along the circumferential direction. The movable member (105) comprises a main body (1051). One side of the main body (1051) is provided with a plurality of inclined protrusions (1052) which match the inclined grooves (107) and can push the inclined groove walls of the inclined grooves (107) when the main body (1051) rotates, thereby causing the locking gear (104) to move laterally.

9. The child stroller frame according to claim 6, characterized in that: A rotating shell (201) capable of rotating relative to the second connecting shell (102) is disposed on the outer side thereof, and a canopy rod (202) for supporting a ceiling is disposed on the rotating shell (201).

10. The child stroller frame according to claim 1, characterized in that: The front frame (1), the rear frame (2) and the support rod (3) are coaxially rotatably connected.

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