Brake structure of stroller and detection device thereof

Abstract

The invention relates to a brake structure of a stroller and a detection device thereof. The brake structure comprises a machine body with wheels; the wheel carrier is rotationally connected with the frame body, and the wheels are arranged on the wheel carrier; the wheel can be locked at any angle through the locking device; the transmission device is used for locking or unlocking the wheels; the number of the pedals is two, one pedal is used for locking, and the other pedal is used for unlocking; the locking device comprises a locking block elastically arranged on the wheel carrier and a plurality of locking discs, the locking discs are arranged on a frame body of the wheel, the locking discs and the wheel are coaxially arranged, a plurality of locking grooves are formed in the outer walls of the locking discs at equal intervals, and the locking grooves are arranged in the locking discs. And when the locking block is inserted into any one of the locking grooves in a sliding manner, the wheels are locked. According to the pedal, through the transmission device and the locking device, double wheels can be braked at the same time by treading the pedal on one side, and the effect of braking at any angle is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of baby strollers, and more particularly to a braking structure and a detection device for a child stroller. Background Art

[0002] Currently, a braking device is configured on a baby stroller to enable the baby stroller to have the function of stopping and parking. The existing such braking devices generally step on a pedal, so that a locking member is locked into a locking groove of a wheel to achieve braking; when braking needs to be released, the pedal is hooked upward by the foot to drive the locking member to disengage from the locking groove to achieve braking release.

[0003] However, in this process, firstly, the same pedal is used during braking and unlocking, so it is necessary to step on or lift it, which has the problem of inconvenient operation; secondly, it is necessary to swing the wheel to the initial position, that is, the actual 90° position, to stop braking, which has the defect of not being suitable for actual applications. Summary of the Invention

[0004] In order to improve the above problems, the present application provides a braking structure and a detection device for a child stroller.

[0005] The braking structure of a child stroller provided by the present application adopts the following technical solutions: A braking structure for a child stroller, comprising: A body having wheels; A wheel carrier, rotatably connected to the frame body and the wheel is disposed on the wheel carrier; A locking device for locking the wheel at any angle; A transmission device for locking or unlocking the wheel; Pedals, two of which are provided, one for locking and the other for unlocking; The locking device includes a locking block elastically disposed on the wheel carrier and a plurality of locking discs. The locking discs are disposed on the frame body of the wheel, and the locking discs are coaxially disposed with the wheel. A plurality of locking grooves are equidistantly disposed on the outer wall of the locking disc. When the locking block is slidably inserted into any one of the locking grooves, the wheel is locked.

[0006] Furthermore, the transmission device includes: A rotating body, fixedly connected to the wheel carrier and rotatably connected to the body; A lifting column, disposed in the rotating body and rotating with the rotating body, and the rotating column is slidably disposed in the rotating body; A transmission rod for connecting the rotation and the locking block, the transmission rod is elastically disposed in the rotating body; the shape of the transmission rod is adapted to the shape of the wheel carrier; A driving mechanism for moving the lifting column in the vertical direction, and the driving mechanism is used to control the lifting movement of the lifting column with the power of the pedal.

[0007] Furthermore, the driving mechanism includes: A driving block that abuts against the bottom of the pedal and moves in the vertical direction; A crosswise rod that is slidably arranged in the machine body; one end abuts against the side surface of the driving block and is pushed to move horizontally; A limiting component for limiting the moving direction of the crosswise rod and the lifting position of the lifting column; A lifting frame for converting the horizontal movement of the crosswise rod into the vertical movement of the lifting frame; The lifting frame is elastically arranged in the machine body, and the lifting frame abuts against the upper surface of the lifting column.

[0008] Furthermore, the limiting component includes: A limiting piece that moves in the horizontal direction and is disposed perpendicular to the moving direction of the crosswise rod, and the limiting piece is elastically arranged in the machine body; A connecting column including a column body part and a protruding part, and the column body part is used to connect the protruding part and the lifting frame; The limiting piece is provided with a limiting groove, the width dimension of the horizontal cross-section of the limiting groove gradually decreases towards the direction of the protruding part, and the protruding part is clamped above the limiting piece, and the column body part is slidably arranged in the limiting groove.

[0009] Furthermore, a plurality of connecting parts connected to the rotating body are arranged on the side wall of the rotating column. The connecting part includes two half rings and a connecting column fixedly connected to the rotating body. The bottom end of the connecting column is connected to the top end of the transmission rod, and the connecting column is clamped with the two half rings by a stepped structure; Both of the two half rings are fixedly connected to the lifting column, the two half rings wrap the connecting column, the rotating column is provided with a connecting hole, the connecting column is adapted to the connecting hole, and the rotating body and the lifting column rotate together.

[0010] Furthermore, the driving mechanism further includes an adjusting component for the intermittent cooperation of the two pedals; The adjusting component includes: An adjusting shaft rotatably connected to the machine body; A locking rod, one end of which is fixedly connected to the outer wall of the adjusting shaft, and the other end is rotatably connected to the driving block; a locking protrusion is further arranged on the locking rod, and the locking protrusion is slidably arranged on the bottom surface of the pedal; The unlocking lever has one end fixedly connected to the adjusting shaft and the other end fixedly connected with an unlocking protrusion. The unlocking protrusion is slidably arranged on the bottom surface of the other pedal. The two pedals move and elastically slide on the body along the vertical direction.

[0011] Furthermore, limit blocks are fixedly connected to the upper surfaces of the cross rods. The body is fixedly connected with a stop block which is provided with a stop groove. A limit protrusion is arranged at one end of the limit block passing through the stop groove. The limit protrusion is used to ensure that the inclined surfaces of the cross rods are in contact with the inclined surfaces of the driving blocks.

[0012] A detection device for a braking structure of a baby stroller, comprising: A body fixing and centering module for positioning and fixing a baby stroller; A wheel rotation and torque loading module for rotating the wheels and applying torque to them; And a central control and data acquisition system for coordinating and controlling each module and collecting and processing data.

[0013] Furthermore, the pedal servo drive module includes at least two independent drive arms, and a force sensor is arranged on each drive arm for respectively driving the locking pedal and the unlocking pedal and measuring the driving force.

[0014] Furthermore, the wheel rotation and torque loading module includes a servo motor and a torque sensor. The servo motor is used to accurately position the wheels at any angle and apply torque after braking. The torque sensor is used to measure the maximum static locking torque that the braking system can withstand.

[0015] In summary, the beneficial technical effects of the present application are as follows: 1. Since the two wheel carriers move in two different directions, when people use the baby stroller, they cannot ensure the orientations of the two wheel carriers. If relying on the braking structure in the prior art, the user needs to adjust the directions of the two wheel carriers to lock them. The locking device in the present application can lock the two wheel carriers at any angle. In addition, the transmission device can achieve the effect of one-step double braking, that is, the effects of the two pedals are to be able to step on and stop the two wheels simultaneously or unlock the two wheels simultaneously, greatly improving the convenience and adaptability of using the baby stroller. When the locking pedal is depressed downward, the driving block moves downward, and under the cooperation of the driving block and the inclined surface on the transverse rod, the transverse rod moves along the transverse movement and in the lifting direction, the protrusion and the column part restrict the movement of the transverse rod, and the inclined surface of the transverse rod cooperates with the inclined surface on the lifting frame, and the lifting frame moves downward; at the same time, the rotating body and the wheel frame can swing to any angle, but in this process, the four legs of the lifting frame are always in contact with the top of the lifting column, so as the lifting frame moves downward, the lifting column is driven downward, and under the connection action of the transmission rod, the slider and the locking block move downward, and the locking block moves into the locking groove, and the friction between the driving protrusion and the driving hole and the friction between the locking block and the locking groove is sufficient to overcome the elastic force of the corresponding spring, ensuring that the wheel is always in a locked state; 3. Through a servo system and high-precision sensors, key performance indicators such as pedaling force and locking torque are transformed from subjective perceptions into precise, repeatable physical data, greatly improving the scientific nature and accuracy of testing. It can automatically test any angle within a 360° range of the wheel, thoroughly eliminating possible locking blind spots and ensuring the comprehensive reliability of the "any-angle locking" function. The entire testing process is automatically controlled by a central system, requiring no human intervention. This rapid testing significantly improves quality inspection efficiency on the production line and reduces labor costs. Automatically generated test reports containing detailed data facilitate statistical analysis, continuous improvement, and problem tracing of product quality, providing strong data support for product development and quality management. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 Schematic diagram of the locking device and the transmission device in the embodiment of the present application; Figure 3 This is a schematic diagram of a transmission device in an embodiment of the present application; Figure 4 This is a schematic diagram of the driving mechanism in the embodiment of the present application; Figure 5 It is a schematic diagram of the connecting portion and the transmission rod in an embodiment of the present application.

[0017] Description of reference numerals: 1. Body; 2. Wheel frame; 3. Wheels; 6. Pedals; 4. Locking block; 41. Locking plate; 42. Locking groove; 43. Slider; 5. Rotating body; 51. Lifting column; 52. Transmission rod; 53. Driving block; 531. Driving protrusion; 532. Driving hole; 54. Transverse rod; 541. Limiting block; 542. Limiting protrusion; 543. Stopper; 544. Stopping groove; 545. Waist-shaped groove; 55. Lifting frame; 551. Support disc; 552. Support leg; 56. Limiting piece; 561. Cylindrical part; 562. Protruding part; 563. Limiting groove; 57. Half ring; 58. Connecting column; 59. Connecting hole; 6. Adjusting shaft; 61. Locking rod; 62. Locking protrusion; 63. Unlocking rod; 64. Unlocking protrusion. Detailed implementation manners

[0018] The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the protection scope of the present application.

[0019] The embodiment of the present application discloses a braking structure of a baby stroller. Refer to Figures 1 - 5 , which includes a body 1 having wheels 3; two wheels 3 are provided, a wheel frame 2, which is rotatably connected to the frame body and the wheels 3 are arranged on the wheel frame 2; similarly, two wheel frames 2 are provided, and the wheel frames 2 can rotate horizontally along 360° on the body 1. During the process of pushing the baby stroller, by controlling the movement direction of the baby stroller by a person, the baby stroller can be moved in all directions, and the rotation directions between the two wheels 3 can be different, that is, the rotation modes of the two wheel frames 2 do not interfere with each other; A locking device to lock the wheels 3 at any angle; A transmission device for locking or unlocking the wheels 3; Pedals 6, two are provided, one for locking and the other for unlocking; Furthermore, since the two wheel frames 2 move in two different directions, when people use the baby stroller, they cannot ensure the orientations of the two wheel frames 2. If relying on the braking structure in the prior art, the user needs to adjust the directions of the two wheel frames 2 to lock. The locking device in the present application can lock the two wheel frames 2 at any angle. In addition, the transmission device can achieve the effect of one-step double braking, that is, the effects of the two pedals 6 are to be able to stop the two wheels 3 simultaneously or unlock the two wheels 3 simultaneously, greatly improving the convenience and adaptability of using the baby stroller.

[0020] The locking device includes a locking block 4 elastically arranged on the wheel carrier 2 and a plurality of locking discs 41. The locking discs 41 are arranged on the frame of the wheel 3 and are coaxially arranged with the wheel 3. A plurality of locking grooves 42 are equidistantly arranged on the outer wall of the locking disc 41. When the locking block slides and is inserted into any one of the locking grooves 42, the wheel 3 is locked. On the side of the locking block 4 away from the locking disc 41, a slider 43 is fixedly connected. The wheel carrier 2 is provided with a sliding groove at the corresponding position for adapting to the sliding of the slider 43. Of course, the side of the sliding groove facing the wheel 3 is open, and both ends of the sliding groove along the vertical direction are closed. Of course, the cross-sections of the slider 43 and the inner wall of the sliding groove can both be set in a T shape. Thus, the slider 43 can only slide along the length direction of the sliding groove. Therefore, the locking block 4 is slidably arranged vertically in the wheel carrier 2. The locking disc 41 is arranged on the axis of the wheel 3 and the frame of the wheel 3, that is, the locking disc 41 is located on the central axis of the wheel 3. The locking grooves 42 are equidistantly distributed. Moreover, in the actual application process, chamfers need to be set at the corners of the locking grooves 42. The upper side and the side facing the wheel carrier 2 of the locking groove 42 are both open. The locking block 4 is inserted vertically into the locking groove 42, and thus the locking effect of the wheel 3 can be achieved.

[0021] The transmission device includes: a rotating body 5, fixedly connected to the wheel carrier 2 and rotatably connected to the machine body 1; a lifting column 51, arranged in the rotating body 5 and rotating together with the rotating body 5, and the rotating column is slidably arranged in the rotating body 5; a transmission rod 52, used to connect the lifting column 51 and the locking block 4, and the transmission rod 52 is elastically arranged in the rotating body 5; the shape of the transmission rod 52 is adapted to the shape of the wheel carrier 2; the rotating body 5 is used to connect the wheel carrier 2 and the machine body 1 and realizes the effect of rotating 360° through a bearing. In addition, the rotating body 5 rotates together with the lifting column 51, that is, at any time, the lifting column 51 rotates together with the rotating body 5, which can also be understood as the lifting column 51 rotates together with the wheel carrier 2, but it does not affect the vertical movement of the lifting column 51. The transmission rod 52 connects the lifting column 51 and the locking block 4. In this embodiment, the transmission rod 52 is connected to the top end of the slider 43, and thus the lifting and lowering movement of the locking block 4 can be pushed.

[0022] A plurality of connecting parts connected to the rotating body 5 are arranged on the side wall of the rotating column. The connecting parts include two half rings 57 and a connecting column 58 fixedly connected to the rotating body 5. The bottom end of the connecting column 58 is connected to the top end of the transmission rod 52. The connecting column 58 and the two half rings 57 are both connected by a stepped structure. The half rings 57 are both fixedly connected to the lifting column 51. The two half rings 57 wrap the connecting column 58. The rotating column is provided with a connecting hole 59. The connecting column 58 is adapted to the connecting hole 59 and realizes rotating together with the rotating body 5 and the lifting column 51. And under the limiting effect of the connecting column 58 and the connecting hole 59, the lifting column 51 can only perform lifting and lowering movements in the rotating body 5.

[0023] The angles of the cross-sectional arcs of the two semi-rings 57 are less than 180°, which facilitates the connection of the two semi-rings 57 and the connecting column 58. However, in this embodiment, the connecting column 58 drives the transmission rod 52 to move together. Step grooves are provided on the inner walls of the two semi-rings 57. While the two semi-rings 57 wrap the connecting column 58, the bottom end of the connecting column 58 is arranged in the step groove. Thus, the connecting column 58 moves together with the lifting column 51. However, in this embodiment, to ensure the elastic movement of the locking block 4, elastic connections are adopted between the connecting column 58 and the rotating body 5, and between the slider 43 and the wheel frame 2 by springs. Thus, when the main unlocking operation is performed, the connecting column 58 moves upward in the rotating body 5 and the slider 43 also moves upward in the wheel frame 2, achieving the effect of quick unlocking, and also ensuring that the lifting column 51 returns to the initial position to ensure the normal progress of the next locking operation.

[0024] The driving mechanism is used to realize the movement of the lifting column 51 along the vertical direction. The driving mechanism is used to control the lifting movement of the lifting column 51 with the power of the pedal 6. In this embodiment, the driving mechanism is used to control the movement of the lifting column 51 in the forward direction. However, since the rotating body 5 rotates together with the lifting column 51, during the rotation process, it does not affect the cooperation relationship between the driving mechanism and the lifting column 51. The driving mechanism can still control the lifting column 51 to move along the vertical direction. Thus, it can still control the locking block 4 to move along the vertical direction, and the wheel 3 can be locked. Finally, when the wheel 3 swings at any angle, the wheel 3 can still be locked.

[0025] The driving mechanism includes: a driving block 53, which abuts against the bottom of the pedal 6 and moves along the vertical direction; the cross-section of the driving block 53 is triangular, and the vertex of the cross-section of the driving block 53 faces downward, and the horizontal plane of the driving block 53 faces upward, that is, towards the position of the pedal 6; a transverse rod 54, which is slidably arranged in the machine body 1; one end abuts against the side surface of the driving block 53 and is pushed to move horizontally; the end of the transverse rod 54 close to the driving block 53 is provided with an inclined surface, and the inclined surface of the transverse rod 54 fits with the inclined surface of the driving block 53, that is, the inclination angle of the transverse rod 54 is the same as the inclination angle of the inclined surface of the driving block 53. And as the driving block 53 moves downward, the driving block 53 squeezes the transverse rod 54 towards both sides, thus realizing the rotation of the driving block 53 moving downward into the horizontal direction of the transverse rod 54.

[0026] The lifting frame 55 is used to convert the lateral movement of the traverse rod 54 into the vertical movement of the lifting frame 55; the lifting frame 55 is elastically arranged in the body 1, and the lifting frame 55 abuts the upper surface of the lifting column 51. The body 1 is fixedly connected with a support plate 551, and the support plate 551 is arranged colinearly with the central axis of the rotating body 5. The support plate 551 and the lifting frame 55 are also connected by a spring, so that the automatic lifting effect of the lifting frame 55 can be achieved. The lifting frame 55 includes a head plate and four support legs 552. The four support legs 552 are slidably arranged in the body 1, and the bottom ends of the four support legs 552 abut against the upper surface of the lifting column 51. Since the lifting column 51 rotates together with the rotating body 5, during the rotation of the rotating body 5, the four support legs 552 are always in a position abutting against the upper surface of the lifting column 51. Therefore, when the rotating body 5 rotates to any angle, the locking block 4 can be controlled to move in the vertical direction, and finally the wheel 3 can be swung to any angle, and the wheel 3 can be locked.

[0027] The limiting assembly is used to limit the movement direction of the traverse rod 54 and the lifting position of the lifting column 51; the limiting assembly includes: a limiting plate 56, which moves in the horizontal direction and is arranged in the direction of movement of the traverse rod 54, and the limiting plate 56 is elastically arranged in the body 1; a connecting column 58, including a column portion 561 and a protrusion 562, the column portion 561 is used to connect the protrusion 562 and the lifting frame 55; the limiting plate 56 is provided with a limiting groove 563, the width of the horizontal cross-section of the limiting groove 563 gradually decreases toward the protrusion 562, and the protrusion 562 is clamped with the upper part of the limiting plate 56, and the column portion 561 is slidably arranged in the limiting groove 5 63; similarly, the part with a small angle of the limiting groove 563 in the limiting plate 56 is connected to the body 1 through a spring. Since the upper surface of the limiting plate 56 abuts against the bottom surface of the protrusion 562 in the initial position, under the elastic action between the limiting plate 56 and the body 1, the protrusion 562 is always located above the upper surface of the limiting groove 563 at the minimum angle position, and finally the connecting column 58 limits the lifting position of the lifting column 51. At the same time, an open waist-shaped groove 545 is provided at the end of the traverse rod 54 away from the driving block 53, and the connecting column 58 slides in the waist-shaped groove 545, thereby limiting the lateral movement of the traverse rod 54.

[0028] The drive mechanism also includes an adjustment assembly for intermittently engaging the two pedals 6. The adjustment assembly includes an adjustment shaft 6, which is rotatably connected to the body 1. The axis of the adjustment shaft 6 is arranged perpendicular to the direction of movement of the traverse rod 54. The two pedals 6 are also symmetrically arranged relative to the axis of the adjustment shaft 6. However, since the body 1 is provided with vertical holes for the pedals 6 to slide, the pedals 6 can only move in the vertical direction. The locking lever 61 has one end fixedly connected to the outer wall of the adjusting shaft 6 and the other end rotatably connected to the driving block 53. The locking lever 61 is further provided with a locking protrusion 62, and the locking protrusion 62 is slidably arranged on the bottom surface of the pedal 6. The unlocking lever 63 has one end fixedly connected to the adjusting shaft 6 and the other end fixedly connected with an unlocking protrusion, and the unlocking protrusion is slidably arranged on the bottom surface of another pedal 6. The two pedals 6 move and elastically slide on the machine body 1 in the vertical direction. First, four moving blocks are arranged at the bottom of the pedal 6, and the inner wall of the vertical hole of the machine body 1 is provided with moving grooves for the moving blocks to slide. The moving grooves are slidably adapted to the moving blocks, further guiding the pedal 6 in the vertical direction. Four springs are also arranged between the bottom of the pedal 6 and the machine body 1, so that the pedal 6 can achieve the effect of automatic reset.

[0029] In the initial state, the locking protrusion 62 on the locking lever 61 and the unlocking protrusion on the unlocking lever 63 do not contact the corresponding pedal 6. When the pedal 6 with the locking effect is stepped on downward, the driving block 53 moves downward. Under the combined action of the driving block 53 and the inclined surface on the crosswise lever 54, the crosswise lever 54 moves along the crosswise direction and moves toward the lifting direction. The convex portion 562 and the cylindrical portion 561 limit the movement of the crosswise lever 54. At the same time, the inclined surface of the crosswise lever 54 cooperates with the inclined surface on the lifting frame 55, and the lifting frame 55 moves downward. At the same time, the rotating body 5 and the wheel frame 2 can swing to any angle, but in this process, the four legs 552 of the lifting frame 55 are always in contact with the top of the lifting column 51. Therefore, as the lifting frame 55 moves downward, the lifting column 51 is driven to move downward. Under the connection of the transmission rod 52, the slider 43 and the locking block 4 move downward, and the locking block 4 moves into the locking groove 42. In this embodiment, it is also necessary to set that the machine body 1 is provided with a driving hole 532 for inserting the driving block 53. The end of the driving block 53 is provided with a driving protrusion 531. When the driving protrusion 531 is inserted into the driving hole 532, the friction between the driving protrusion 531 and the driving hole 532 and the friction between the locking block and the locking groove are sufficient to overcome the elastic force of the corresponding spring, ensuring that the wheel 3 is always in the locked state.

[0030] During the locking process, the locking protrusion 62 contacts the bottom surface of the corresponding locked pedal 6. However, during this process, that is, under the driving action of the adjusting shaft 6, the unlocking protrusion also starts to move upward, but still does not contact or just contacts the bottom surface of the corresponding pedal 6. Therefore, when unlocking is required, step on the unlocking pedal 6 downward. Therefore, in this embodiment, unlocking or locking icons can be drawn on the pedal 6, which can further remind the user of the function of the corresponding pedal 6. When the explained pedal 6 is stepped on downward until it abuts against the corresponding unlocking protrusion, the unlocking protrusion drives the unlocking rod 63 to move downward, and at this time, the locking rod 61 moves upward. The locking rod 61 drives the driving protrusion 531 to be pulled out of the driving hole 532. At this time, the locked pedal 6 moves to a position separated from the unlocking protrusion, and under the elastic force of the corresponding spring, the lifting column 51 and the locking block 4 both return to their initial positions, and the locking of the wheel 3 is released. And at this time, if the unlocking pedal 6 loses the external force of the staff, it also returns to its initial position to facilitate the next locking and unlocking work.

[0031] Meanwhile, it is also necessary to limit the position of the cross bar 54. Limit blocks are fixedly connected to the upper surface of the cross bar 54. The machine body 1 is fixedly connected with a stop block 543. The stop block 543 is provided with a stop groove 544. A limit protrusion is provided at one end of the limit block 541 passing through the stop groove 544. The limit protrusion is used to ensure that the inclined surface of the cross bar 54 abuts against the inclined surface of the driving block 53. Similarly, the limit block 541 is also provided with a stepped groove. Therefore, the limit block 541 can limit the movement distance of the cross bar 54; when the limit protrusion 542 is stuck on the side of the stop block 543, its main function is that when unlocking, the cross bar 54 can return to its initial position. If the position of the cross bar 54 is not limited, the distance between the cross bars 54 approaching each other decreases, and even the driving block 53 is squeezed out of the gap between the two cross bars 54, resulting in the inability to realize the driving work of the cross bar 54 next time, that is, the locking work is affected; similarly, under the action of the stepped groove of the limit block 541, when the locking block 4 is inserted into the locking groove 42, the transmission rod 52 is always in a stressed state, which will affect the service life of the transmission rod 52 and will affect the normal locking work of the wheel 3. At the same time, it can also ensure that the driving block 53 and the cross bar 54 are always in an abutting state during the locking work, which will also affect the unlocking work of the wheel 3.

[0032] In another embodiment, a detection device for a braking structure of a children's stroller includes: a machine body fixing and centering module for positioning and fixing the children's stroller. In this embodiment, the machine body fixing and centering film block selects a plurality of clamps for fixing and clamping the children's stroller in the center, and the children's stroller remains absolutely stationary to eliminate measurement errors caused by the movement of the stroller.

[0033] The wheel rotation and torque loading module includes a servo motor, a chuck, and a high-precision torque sensor. The chuck is used to clamp the wheel or tire. The suction motor and the chuck are connected by a high-precision torque sensor. The pedal servo drive module uses a locking drive arm and an unlocking drive arm to align with the locking pedal and the unlocking pedal respectively. In this embodiment, a force sensor is installed at the end of each drive arm. In this embodiment, a central control and data acquisition system is selected to start executing the preset detection program. The steps are as follows: Step A: Prepare and position, secure the trolley, and connect each module to the corresponding part of the trolley.

[0034] Step B: Wheel angle positioning: The central control system issues instructions to control the servo motor in the wheel rotation and torque loading module to rotate the wheel to the first test angle, such as 0°. The servo motor can achieve high-precision angle positioning through the built-in encoder.

[0035] Step C: Execute the locking operation. The pedal servo drive module controls the locking drive arm to descend and depresses the locking pedal at the set speed and pressure. During this process, the force sensor monitors the pedaling force in real time and records the minimum force F required to fully engage and lock the brake structure. _min and the final applied peak force F_ peak .

[0036] Step D: Loading and measuring torque. After confirming that the brake is locked, the servo motor begins to apply a reverse or forward torque to the wheel. The torque starts from 0 and increases linearly at a steady rate (e.g., 1 N·m / s). At the same time, the torque sensor feeds back the real-time torque value to the central control system 40.

[0037] Step E: Determine brake failure. During the torque loading process, the servo motor's encoder is monitored to determine whether the wheel has undergone a slight angular displacement. Once the wheel starts to rotate, it indicates that the locking device of the brake system has been damaged and the brake has failed.

[0038] Step F: Record data and loop. When the brake failure is detected, record the torque sensor reading at that moment. This value is the "maximum static locking torque T" at the current angle. _max ”, then the unlocking actuator depresses the unlocking pedal to confirm that the brake can be released normally. The system then determines whether all preset angles have been tested. If not, it returns to step B, controls the servo motor to rotate the wheel to the next test angle (for example, 1° or 5°), and repeats steps C to F. If so, the test ends, and the test data at all angles (pedaling force, maximum locking torque, etc.) are integrated to generate a complete test report, and determine whether the brake system is qualified.

[0039] The implementation principle of the brake structure and detection device of the child stroller of the embodiment of the present application is as follows: in the initial state, the locking protrusion 62 on the locking rod 61 and the unlocking protrusion on the unlocking rod 63 do not contact the corresponding pedal 6. If the pedal 6 with the locking effect is stepped on downward, the driving block 53 moves downward. Under the cooperation of the driving block 53 and the inclined surface on the traverse rod 54, the traverse rod 54 moves along the traverse motion and in the lifting direction. The protrusion 562 and the column part 561 limit the movement of the traverse rod 54. At the same time, the inclined surface of the traverse rod 54 cooperates with the inclined surface on the lifting frame 55, and the lifting frame 55 moves downward. At the same time, the rotating body 5 and the wheel frame 2 can swing to any angle, but in this case During this process, the four legs 552 of the lifting frame 55 are always in contact with the top of the lifting column 51, so as the lifting frame 55 moves downward, the lifting column 51 is driven downward, and under the connection action of the transmission rod 52, the slider 43 and the locking block 4 move downward, and the locking block 4 moves into the locking groove 42. In this embodiment, it is also necessary to set that the body 1 is provided with a driving hole 532 for the driving block 53 to be inserted, and the end of the driving block 53 is provided with a driving protrusion 531. When the driving protrusion 531 is inserted into the driving hole 532, the friction force between the driving protrusion 531 and the driving hole 532 and the friction force between the locking block and the locking groove is sufficient to overcome the elastic force of the corresponding spring, thereby ensuring that the wheel 3 is always in a locked state.

[0040] Therefore, when unlocking is required, the unlocking pedal 6 is stepped downward. When the unlocking pedal 6 is stepped downward until it abuts against the corresponding unlocking protrusion, the unlocking protrusion drives the unlocking rod 63 to move downward. At this time, the locking rod 61 moves upward, and the locking rod 61 drives the driving protrusion 531 to be pulled out from the driving hole 532. At this time, the locked pedal 6 moves to a position separated from the unlocking protrusion. Under the elastic force of the corresponding spring, the lifting column 51 and the locking block 4 return to the initial position, the lock of the wheel 3 is released, and at this time, if the unlocked pedal 6 loses the external force of the staff, it will also return to the initial position to facilitate the next locking and unlocking work.

[0041] Through the servo system and high-precision sensors, key performance indicators such as pedaling force and locking torque are transformed from subjective perceptions into precise, repeatable physical data, greatly improving the scientific nature and accuracy of testing. It can automatically test any angle within a 360-degree range of the wheel, thoroughly eliminating possible locking blind spots and ensuring the comprehensive reliability of the "any-angle locking" function. The entire testing process is automatically controlled by the central system, requiring no human intervention. The fast testing speed greatly improves quality inspection efficiency on the production line and reduces labor costs. Automatically generating test reports containing detailed data facilitates statistical analysis, continuous improvement, and problem tracing of product quality, providing strong data support for product development and quality management.

[0042] Unless otherwise defined, technical or scientific terms used in this application shall have the ordinary meanings as understood by those of ordinary skill in the art to which this application pertains. The terms "first", "second", "third" and similar terms used in the specification and claims of this application do not denote any order, quantity or importance, but are merely used to distinguish different components. Similar terms such as "a" or "an" do not denote a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" mean that the elements or items appearing before "comprising" or "including" cover the elements or items listed after "comprising" or "including" and their equivalents, and do not exclude other elements or items. Terms such as "upper", "lower", "left", "right" are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationships may also change accordingly.

[0043] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A braking structure for a baby stroller, characterized in that, Comprising: A body (1) with wheels (3); A wheel carrier (2), rotatably connected to the frame and the wheels (3) are arranged on the wheel carrier (2); A locking device for locking the wheels (3) at any angle; A transmission device for locking or unlocking the wheels (3); Pedals (6), two are provided, one for locking and the other for unlocking; The locking device includes a locking block (4) elastically arranged on the wheel carrier (2) and a plurality of locking discs (41). The locking discs (41) are arranged on the frame of the wheels (3), and the locking discs (41) are coaxially arranged with the wheels (3). A plurality of locking grooves (42) are equidistantly arranged on the outer wall of the locking discs (41). When the locking block slides and is inserted into any one of the locking grooves (42), the wheels (3) are locked.

2. The braking structure of a baby stroller according to claim 1, characterized in that, The transmission device includes: A rotating body (5), fixedly connected to the wheel carrier (2) and rotatably connected to the body (1); A lifting column (51), arranged in the rotating body (5) and rotating together with the rotating body (5), and the rotating column is slidably arranged in the rotating body (5); A transmission rod (52) for connecting the rotation and the locking block (4), the transmission rod (52) is elastically arranged in the rotating body (5); the shape of the transmission rod (52) is adapted to the shape of the wheel carrier (2); A driving mechanism for moving the lifting column (51) in the vertical direction, and the driving mechanism is used to control the lifting movement of the lifting column (51) with the power of the pedal (6).

3. The braking structure of a baby stroller according to claim 2, characterized in that, The driving mechanism includes: A driving block (53), abutting against the bottom of the pedal (6) and moving in the vertical direction; A transverse rod (54), slidably arranged in the body (1); one end abuts against the side surface of the driving block (53) and is pushed to move horizontally; A limiting component for limiting the movement direction of the transverse rod (54) and the lifting position of the lifting column (51); A lifting frame (55) for converting the horizontal movement of the transverse rod (54) into the vertical movement of the lifting frame (55); The lifting frame (55) is elastically arranged in the body (1), and the lifting frame (55) abuts against the upper surface of the lifting column (51).

4. A braking structure of a baby stroller according to claim 3, characterized in that, The limiting component includes: A limiting piece (56), moving in the horizontal direction and disposed perpendicular to the movement direction of the transverse rod (54), the limiting piece (56) is elastically arranged in the body (1); A connecting column (58), including a column body part (561) and a protruding part (562), the column body part (561) is used to connect the protruding part (562) and the lifting frame (55); The limiting piece (56) is provided with a limiting groove (563), the width dimension of the horizontal cross-section of the limiting groove (563) gradually decreases towards the direction of the protruding part (562), and the protruding part (562) is clamped above the limiting piece (56), and the column body part (561) is slidably arranged in the limiting groove (563).

5. The braking structure of a baby stroller according to claim 4, characterized in that, A plurality of connecting parts connected to the rotating body (5) are provided on the side wall of the rotating column. The connecting parts include two half-rings (57) and a connecting column (58) fixedly connected to the rotating body (5). The bottom end of the connecting column (58) is connected to the top end of the transmission rod (52). The connecting column (58) is clamped with the two half-rings (57) by means of a stepped structure; Both of the two half-rings (57) are fixedly connected to the lifting column (51). The two half-rings (57) wrap the connecting column (58). The rotating column is provided with a connecting hole (59). The connecting column (58) is adapted to the connecting hole (59), and realizes rotation together with the rotating body (5) and the lifting column (51).

6. The braking structure of a baby stroller according to claim 5, characterized in that, The driving mechanism further includes an adjusting component for the intermittent cooperation of the two pedals (6); The adjusting component includes: An adjusting shaft (6), rotatably connected to the machine body (1); A locking rod (61), one end of which is fixedly connected to the outer wall of the adjusting shaft (6), and the other end is rotatably connected to the driving block (53); a locking protrusion (62) is further provided on the locking rod (61), and the locking protrusion (62) is slidably arranged on the bottom surface of the pedal (6); An unlocking rod (63), one end of which is fixedly connected to the adjusting shaft (6), and the other end is fixedly connected with an unlocking protrusion, and the unlocking protrusion is slidably arranged on the bottom surface of the other pedal (6); The two pedals (6) move and elastically slide on the machine body (1) along the vertical direction.

7. The braking structure of a baby stroller according to claim 6, characterized in that, Limit blocks are fixedly connected to the upper surface of the transverse movement rod (54). A stop block (543) is fixedly connected to the machine body (1). The stop block (543) is provided with a stop groove (544). A limit protrusion is provided at one end of the limiting block (541) passing through the stop groove (544). The limit protrusion is used to ensure that the inclined surface of the transverse movement rod (54) abuts against the inclined surface of the driving block (53).

8. A detection device for the braking structure of a baby stroller, which is used to detect the performance of the braking structure of the baby stroller described in any one of claims 1-7, characterized in that, It includes: A machine body fixing and centering module for positioning and fixing a baby stroller; A wheel rotation and torque loading module for rotating the wheel and applying torque to it; And a central control and data acquisition system for coordinating the control of each module and collecting and processing data.

9. The detection device for the braking structure of a baby stroller according to claim 8, characterized in that, It includes: The pedal servo drive module includes at least two independent drive arms, and a force sensor is arranged on each drive arm for respectively driving the locking pedal and the unlocking pedal and measuring the driving force.

10. The detection device for the braking structure of a baby stroller according to claim 9, characterized in that, It includes: The wheel rotation and torque loading module includes a servo motor and a torque sensor. The servo motor is used to accurately position the wheel at any angle and apply torque after braking. The torque sensor is used to measure the maximum static locking torque that the braking system can withstand.

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