Braking mechanism of a baby carriage

Abstract

The present invention discloses a brake mechanism for a baby stroller, relating to the technical field of baby strollers. The key technical aspects of the present invention are: comprising a chassis, an axle disposed on the chassis, and tires disposed at both ends of the axle; the brake mechanism is characterized in that the axle is provided with a brake mechanism for braking the tires, the brake mechanism comprising a connecting shell fixed to and extending through the axle; a positioning rod slidably connected within the connecting shell; one end of the positioning rod extends out of the outer wall of the connecting shell; a plurality of positioning grooves for inserting the positioning rod are defined along a circumferential direction corresponding to the inner surface of the tire; and a drive assembly for driving the positioning rod. The present invention aims to provide a brake mechanism for a baby stroller.

Description

Technical Field

[0001] The present invention relates to the technical field of baby carriages, and more particularly to a brake mechanism of a baby carriage. Background Art

[0002] Children's strollers generally include a body and a wheel assembly disposed at the bottom of the body. To enhance safety, these strollers are typically equipped with a brake mechanism that has two states: a brake engaged and a brake released. When the stroller is moving, the brake mechanism is in the brake released state, and when the stroller is stopped, the brake mechanism is in the braked state.

[0003] Chinese patent publication number CN111483507B discloses a brake mechanism for a baby carriage and a baby carriage, the baby carriage comprising a frame and a wheel assembly, the wheel assembly comprising a wheel seat connected to the frame and a wheel rotatably mounted on the wheel seat, the brake mechanism comprising a brake disc fixedly arranged on the wheel and a brake pad assembly arranged on the wheel seat, the brake pad assembly comprising two arc-shaped brake pads, each brake pad having a first end and a second end arranged in a direction of its own length extension, the first ends of the two brake pads being rotatably connected to the wheel seat via a rotating shaft, the two brake pads being jointly arranged around the circumferential outer side of the brake disc, the inner circumferential surface of the brake pad forming a braking surface that cooperates with the brake disc, an elastic member assembly for driving the two to move relatively apart is further provided between the two second ends, braking can be achieved when the second ends of the two brake pads are driven relatively close to each other, and after the external force is released, the two brake pads automatically reset under the action of the elastic member assembly and the brakes are released.

[0004] The above counting method concealed rod has a simple structure and is easy to operate. However, in actual use, if the baby carriage needs to be braked for a long time, external force needs to be applied to the brake handle all the time. Therefore, when the adult leaves the baby carriage, it cannot be guaranteed that the baby carriage is always in a braked state, and the safety of the baby carriage cannot be guaranteed.

[0005] Therefore, a new technical solution is urgently needed to solve the above technical problems. Summary of the Invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a brake mechanism for a baby carriage.

[0007] The above technical objectives of the present invention are achieved through the following technical solutions: a braking mechanism for a baby carriage, comprising a chassis, an axle provided on the chassis, tires provided at both ends of the axle, a braking mechanism for braking the tires provided on the axle, the braking mechanism comprising a connecting shell fixed to and passed through the axle, a positioning rod slidably connected in the connecting shell, one end of the positioning rod extending out of the outer wall of the connecting shell, and a plurality of positioning grooves for inserting the positioning rod are provided along the circumferential direction corresponding to the inner surface of the tire, and also comprising a driving component for driving the positioning rod.

[0008] The present invention is further configured as follows: an abutment block is provided on one side of the positioning rod, and a first spring is fixedly connected between the abutment block and the inner wall of the connecting shell. Under the elastic force of the first spring, the positioning rod extends out of the connecting shell and is inserted into the corresponding positioning groove, and the driving assembly is used to drive the positioning rod away from the positioning groove.

[0009] The present invention is further configured as follows: the drive assembly includes a drive shaft rotatably connected to the surface of the chassis, a winding disk is provided at both ends of the drive shaft, a pull rope is wound on the winding disk, a guide wheel is provided in the connecting shell, one side of the positioning rod is fixedly connected to a connecting block, the pull rope extends into the connecting shell, passes around the guide wheel and is fixedly connected to the connecting block, the middle part of the drive shaft is fixedly connected to a foot pedal extending out of the tail end of the chassis, and also includes a limiting assembly for limiting the drive shaft.

[0010] The present invention is further configured as follows: a cover is provided on the surface of the chassis, a connecting column is provided in the middle of the drive shaft, and the limit assembly includes two limit blocks arranged in the cover and located on both sides of the connecting column, the limit block is connected to the inner side of the cover along the axial sliding of the drive shaft, a limit column is provided on the side of the limit block facing the connecting column, two limit holes are provided at both ends of the connecting column for inserting the limit column, the end of the limit column and the inner wall of the limit hole are both arranged in an arc surface, a groove is provided on the side of the limit block away from the connecting column, a second spring is provided in the groove, and under the action of the elastic force of the second spring, the limit column is inserted into the corresponding limit hole.

[0011] The present invention is further configured as follows: a fixed sleeve is provided on the driving shaft on the opposite side of the two winding reels, and a sliding sleeve is provided on the driving shaft between the fixed sleeve and the connecting column. The sliding sleeve is sleeved and slides on the driving shaft, and a guide groove for the sliding sleeve to be slidably connected is provided at the bottom of the chassis. A triangular positioning block is provided on the end edge of the sliding sleeve facing the corresponding fixed sleeve, and two triangular positioning grooves for inserting the triangular positioning block are provided at the end of the fixed sleeve. The two triangular positioning grooves are adjacent to each other and are in a "W" shape. A third spring is sleeved and fixedly connected between the sliding sleeve and the inner wall of the guide groove on the driving shaft. Under the elastic force of the third spring, the triangular positioning block is snapped into one of the triangular positioning grooves.

[0012] The present invention is further configured as follows: a guide block is provided at the bottom of the sliding sleeve, and a guide rail for sliding connection of the guide block is provided at the bottom of the groove to prevent the sliding sleeve from deflecting.

[0013] The present invention is further configured as follows: an abutment block is provided on one side of the sliding sleeve, and one end of the second spring is fixedly connected to the abutment block.

[0014] The present invention has the following beneficial effects: when the baby carriage needs to be fully braked, the foot pedal is stepped on to drive the positioning rod to slide toward the side of the tire and insert it into the corresponding positioning groove, thereby ensuring that the baby carriage can be in a braked state for a long time and ensuring the safety of the baby carriage. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the three-dimensional structure of this embodiment;

[0016] Figure 2 This is a schematic diagram of the internal structure of the connecting shell of this embodiment;

[0017] Figure 3 Schematic diagram of the structure of the tire of this embodiment;

[0018] Figure 4 It is a partial structural diagram of this embodiment;

[0019] Figure 5 Schematic diagram of the structure of the brake mechanism of this embodiment;

[0020] Figure 6 This is a schematic structural diagram of the connecting column of this embodiment;

[0021] Figure 7 Schematic diagram of the structure of the limit block of this embodiment;

[0022] Figure 8 Schematic diagram of the structure of the fixed sleeve of this embodiment;

[0023] Figure 9 Schematic diagram of the structure of the sliding sleeve of this embodiment;

[0024] Figure 10 Schematic diagram of the installation structure inside the connection shell.

[0025] Description of the drawings: 1. Chassis; 2. Axle; 3. Tire; 4. Connecting shell; 5. Positioning rod; 6. Positioning groove; 7. Abutment block; 8. First spring; 9. Drive shaft; 10. Winding reel; 11. Pull rope; 12. Guide wheel; 13. Connecting block; 14. Foot pedal; 15. Cover; 16. Connecting column; 17. Limiting block; 18. Limiting column; 19. Limiting hole; 20. Groove; 21. Second spring; 22. Fixed sleeve; 23. Sliding sleeve; 24. Triangular positioning block; 25. Triangular positioning groove; 26. Third spring; 27. Guide block; 28. Fixed block; 29. ​​Shell; 30. Cover plate. DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0028] like Figure 1 、 Figure 2 and Figure 3 As shown, a brake mechanism of a baby carriage includes a chassis 1, an axle 2 is fixedly mounted on the chassis 1, tires 3 are rotatably connected to both ends of the axle 2, and a brake mechanism for braking the tires 3 is provided on the axle 2. The brake mechanism includes two connecting shells 4 that pass through and are fixed to both ends of the axle 2, a positioning rod 5 is slidably connected inside the connecting shell 4, one end of the positioning rod 5 extends out of the outer wall of the connecting shell 4, and a plurality of positioning grooves 6 for inserting the positioning rod 5 are opened along the circumferential direction corresponding to the inner surface of the tire 3, and also includes a driving component for driving the positioning rod 5.

[0029] When the stroller needs to be fully braked, the driving assembly drives the positioning rod 5 to slide toward the side of the tire 3 and inserts it into the corresponding positioning groove 6, thereby ensuring that the stroller can be in a braked state for a long time and ensuring the safety of the stroller.

[0030] like Figure 2 As shown, an abutment block 7 is provided on one side of the positioning rod 5. A first spring 8 is fixedly connected between the abutment block 7 and the inner wall of the connecting shell 4. Under the elastic force of the first spring 8, the positioning rod 5 extends out of the connecting shell 4 and is inserted into the corresponding positioning groove 6. The driving assembly is used to drive the positioning rod 5 away from the positioning groove 6. The elastic force of the first spring 8 allows the positioning rod 5 to be stably inserted into the positioning groove 6, thereby ensuring stability when the baby stroller is braked and ensuring safe use.

[0031] like Figure 4 As shown, the driving assembly includes a driving shaft 9 rotatably connected to the surface of the chassis 1, and a winding drum 10 is provided at both ends of the driving shaft 9. A pull rope 11 is wound on the winding drum 10, and a guide wheel 12 is provided in the connecting shell 4. One side of the positioning rod 5 is fixedly connected to a connecting block 13, and the pull rope 11 extends into the connecting shell 4, passes around the guide wheel 12 and is fixedly connected to the connecting block 13. The middle part of the driving shaft 9 is fixedly connected to a foot pedal 14 extending out of the tail end of the chassis 1, and also includes a limiting assembly for limiting the driving shaft 9.

[0032] The foot pedal 14 can be used for convenient operation to control the rotation of the drive shaft 9 to control the winding drum 10 to reel in or unreel. In this embodiment, when the foot pedal 14 is stepped on, the winding drum 10 is driven to unreel the pull rope. Under the elastic force of the first spring 8, the positioning rod 5 is inserted into the positioning groove 6. When the baby carriage needs to be unlocked, the foot pedal 14 is lifted upward to make the winding drum 10 reel the pull rope 11, thereby pulling the positioning rod 5 toward the inside of the connecting shell 4 to retract, thereby separating from the positioning groove 6 to unlock the baby carriage.

[0033] Such as 1. Figure 5 and Figure 6 As shown, a cover 15 is provided on the surface of the chassis 1 to protect the brake mechanism. A connecting column 16 is fixedly connected to the middle part of the drive shaft 9, and the foot pedal 14 is fixedly connected to the connecting column 16. The limit assembly includes two limit blocks 17 arranged in the cover and located on both sides of the connecting column 16. The limit block 17 is connected to the inner side of the cover along the axial direction of the drive shaft 9. A limit column 18 is provided on the side of the limit block 17 facing the connecting column 16. Two limit holes 19 for inserting the limit columns 18 are provided at both ends of the connecting column 16. The end of the limit column 18 and the inner wall of the limit hole 19 are both arranged in an arc surface. A groove 20 is provided on the side of the limit block 17 away from the connecting column 16, and a second spring 21 is provided in the groove 20. It also includes a positioning member for positioning the end of the second spring 21 extending out of the groove 20. Under the elastic force of the second spring 21, the limit column 18 is inserted into the corresponding limit hole 19.

[0034] When the pedal 14 is stepped on, the drive shaft 9 and the connecting column 16 are driven to rotate at the same time, so that the limit column 18 leaves the current limit hole 19, and at the same time pushes the limit block 17 to slide away from the connecting column 16, so that the second spring 21 is compressed. Continue to step on the pedal 14, and finally the limit column 18 is inserted into the other limit hole 19, corresponding to the two states of braking and unlocking the stroller.

[0035] like Figure 5 、 Figure 7 、 Figure 8 and Figure 9As shown, a fixed sleeve 22 is provided on the opposite side of the two winding reels 10, and the part of the driving shaft 9 between the fixed sleeve 22 and the connecting column 16 is provided with a sliding sleeve 23. The sliding sleeve 23 is sleeved and slides on the driving shaft 9. A guide groove for the sliding sleeve 23 to be slidably connected is provided at the bottom of the chassis 1. A triangular positioning block 24 is provided on the end edge of the sliding sleeve 23 facing the corresponding fixed sleeve 22. Two triangular positioning grooves 25 for inserting the triangular positioning block 24 are provided at the end of the fixed sleeve 22. The two triangular positioning grooves 25 are adjacent to each other and are in a "W" shape. A third spring 26 is sleeved and fixedly connected between the sliding sleeve 23 and the inner wall of the end of the guide groove on the driving shaft 9. Under the elastic force of the third spring 26, the triangular positioning block 24 is snapped into one of the triangular positioning blocks 25.

[0036] When the foot pedal 14 is stepped on, the winding disk 10 and the fixed sleeve 22 are driven to rotate at the same time. Under the action of the inclined surface of the triangular positioning groove 25 and the triangular positioning block 24, the two sliding sleeves 23 are pushed to slide relative to each other along the drive shaft 9, and the third spring 26 is further compressed. When the foot pedal 14 is completely stepped on, the triangular positioning block 24 is inserted into another triangular positioning groove 25, the pull rope 11 is unwound, and under the action of the elastic force of the first spring, the positioning rod 5 is inserted into the positioning groove 6, so that the baby carriage is in a braked state.

[0037] When the foot pedal 14 is lifted, the winding drum 10 and the fixing sleeve 22 are reset. When the foot pedal is fully lifted, the triangular positioning block 24 is reset to the original triangular positioning groove 25. The winding drum 10 rewinds the pull rope 11, pulling the positioning rod 5 to slide and leave the positioning groove 6 to unlock the stroller.

[0038] like Figure 9 As shown, a guide block 27 is provided at the bottom of the sliding sleeve 23, and a guide rail (not shown in the figure) is provided at the bottom of the guide groove for sliding connection of the guide block 27 to prevent the sliding sleeve 23 from deflecting and improve the stability of the sliding sleeve 23 during operation.

[0039] The positioning member includes a fixed block 28 arranged on one side of the sliding sleeve 23. One end of the second spring 21 is fixedly connected to the fixed block 28 to further improve the stability of the sliding sleeve 23. Under the elastic force of the second spring 21, the triangular positioning block 24 can be stably inserted into the triangular positioning groove 25.

[0040] like Figure 10 As shown, the connecting shell 4 includes a shell 29 and a cover plate 30. The shell 29 is provided with an installation cavity for installing the positioning rod 5, the first spring 8, the guide wheel 12, and the pull rope 11, which are sealed and installed by the cover plate 30.

[0041] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the embodiments as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A brake mechanism for a baby carriage, comprising a chassis (1), an axle (2) provided on the chassis (1), and tires (3) provided at both ends of the axle (2), characterized in that: The axle (2) is provided with a brake mechanism for braking the tire (3), the brake mechanism comprising two connecting shells (4) passing through and fixed at both ends of the axle (2), a positioning rod (5) being slidably connected in the connecting shell (4), one end of the positioning rod (5) extending out of the outer wall of the connecting shell (4), a plurality of positioning grooves (6) for inserting the positioning rod (5) are provided along the circumferential direction corresponding to the inner surface of the tire (3), and a driving assembly for driving the positioning rod (5); An abutment block (7) is provided on one side of the positioning rod (5), and a first spring (8) is fixedly connected between the abutment block (7) and the inner wall of the connecting shell (4). Under the elastic force of the first spring (8), the positioning rod (5) extends out of the connecting shell (4) and is inserted into the corresponding positioning groove (6). The driving assembly is used to drive the positioning rod (5) away from the positioning groove (6); The driving assembly includes a driving shaft (9) rotatably connected to the surface of the chassis (1), a winding drum (10) is provided at both ends of the driving shaft (9), a pull rope (11) is wound on the winding drum (10), a guide wheel (12) is provided in the connecting shell (4), a connecting block (13) is fixedly connected to one side of the positioning rod (5), the pull rope (11) extends into the connecting shell (4), passes around the guide wheel (12) and is fixedly connected to the connecting block (13), the middle part of the driving shaft (9) is fixedly connected to a pedal (14) extending out of the rear end of the chassis (1), and also includes a limiting assembly for limiting the driving shaft (9); The chassis (1) is provided with a cover (15) on its surface, a connecting column (16) is provided in the middle of the drive shaft (9), and the limiting assembly comprises two limiting blocks (17) provided in the cover (15) and located on both sides of the connecting column (16). The limiting blocks (17) are connected to the inner side of the cover (15) by sliding along the axial direction of the drive shaft (9). A limiting column (18) is provided on one side of the limiting block (17) facing the connecting column (16), and two limiting holes are provided at both ends of the connecting column (16). The column (18) is inserted into a limiting hole (19), the end of the limiting column (18) and the inner wall of the limiting hole (19) are both arranged in an arc surface, the limiting block (17) is provided with a groove (20) on the side away from the connecting column (16), a second spring (21) is arranged in the groove (20), and a positioning member is also included for positioning the end of the second spring (21) extending out of the groove (20), under the elastic force of the second spring (21), the limiting column (18) is inserted into the corresponding limiting hole (19).

2. The brake mechanism of a baby carriage according to claim 1, characterized in that: A fixed sleeve (22) sleeved on the drive shaft (9) is provided on one side opposite to the two winding reels (10), and a sliding sleeve (23) is sleeved on the portion of the drive shaft (9) between the fixed sleeve (22) and the connecting column (16). The sliding sleeve (23) sleeves and slides on the drive shaft (9). A guide groove for sliding connection of the sliding sleeve (23) is provided at the bottom of the chassis (1). A triangular positioning block (24) is provided on the end edge of the sliding sleeve (23) facing the corresponding fixed sleeve (22). Two triangular positioning grooves (25) for inserting the triangular positioning block (24) are provided at the end of the fixed sleeve (22). The two triangular positioning grooves (25) are adjacently arranged and in a "W" shape. A third spring (26) is sleeved and fixedly connected between the sliding sleeve (23) and the inner wall of the end of the guide groove on the drive shaft (9). Under the elastic force of the third spring (26), the triangular positioning block (24) is snapped into one of the triangular positioning grooves (25).

3. The brake mechanism of a baby carriage according to claim 2, characterized in that: A guide block (27) is provided at the bottom of the sliding sleeve (23), and a guide rail for sliding connection of the guide block (27) is provided at the bottom of the guide groove to prevent the sliding sleeve (23) from deflecting.

4. The brake mechanism of a baby carriage according to claim 3, characterized in that: The positioning member comprises a fixed block (28) arranged on one side of the sliding sleeve (23), and one end of the second spring (21) is fixedly connected to the fixed block (28).

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