Stroller for infants

Abstract

The utility model discloses a baby stroller, and relates to the technical field of baby strollers. The baby stroller comprises a stroller body, rear wheels, front wheels, a storage basket and a sleeping basket, a self-locking mechanism is arranged on the stroller body and comprises a grip seat and a base, a strain gauge sensor is fixed to the top of an elastic piece, supporting legs are arranged on a screw rod, and the support legs are connected with the grip seat and the base. Through the arrangement of the elastic sheet, the strain gauge sensor, the master gear, the slave gear and the supporting legs, when an accompanying adult loosens the gasket of the handheld part, the middle of the elastic sheet is not bent any more, the resistance of the strain gauge sensor returns to normal, and then a corresponding signal is transmitted to the controller; the driving gear and the driven gear rotate under the action of the started servo motor, the supporting legs are screwed to the ground, fixing is automatically completed, the fixing process is irrelevant to the will of an accompanying adult, and accidents caused by the fact that the cart body is not effectively fixed due to negligence can be completely eradicated.

Description

Technical Field

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

[0002] A stroller is a "means of transportation" for infants and young children. It requires someone to help push or pull it to move. It is generally composed of a seat cushion, a sleeping basket, a safety belt and a storage basket. According to the growth stage of the infant and young children and their purpose of use, strollers can be divided into twin strollers, high-view strollers, awning strollers and pocket strollers.

[0003] Existing baby strollers usually use universal wheels with wheel brakes on the front wheels. When the stroller needs to be fixed, the wheel brake can be stepped on to temporarily stop the stroller at a desired position. However, sometimes in situations where the stroller needs to be fixed, such as public transportation or places where the stay time is long, the accompanying adult may neglect to fix the stroller. Even if the baby in the stroller has been taken out, the unfixed stroller may still slide due to bumps or accidental collisions, posing certain safety hazards. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a stroller for infants to solve the technical problem that the existing strollers for infants do not have a corresponding self-locking mechanism, and when the accompanying adult is negligent and fails to fix the stroller when it is needed, there are certain safety hazards.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a stroller for infants and young children, comprising a stroller body, rear wheels, front wheels, a storage basket and a sleeping basket, the stroller body is provided with a self-locking mechanism, the self-locking mechanism comprises a handle seat and a base, the top of the handle seat is provided with a foot pad, the top of the foot pad is provided with an elastic sheet, the top of the elastic sheet is fixed with a strain gauge sensor, the outer side of the strain gauge sensor is provided with a connecting seat, and the top of the connecting seat is provided with a hand grip; a servo motor is provided at the bottom of the base, a rotating shaft is provided at the output end of the servo motor, a main gear is provided on the rotating shaft, and slave gears are provided on both sides of the main gear, a screw rod is longitudinally penetrated through the middle of the slave gear, a screw rod seat is provided at the top of the screw rod, and a support leg is provided on the screw rod.

[0006] By adopting the above technical solution, through the coordinated work of the handle base, foot pads, elastic sheets and strain gauge sensors, and the cooperation of the servo motor and the gear system, the stroller body can be automatically locked when the accompanying adult releases his hands, thereby improving the safety of use.

[0007] Furthermore, a gasket is provided on the top of the grip portion, and the gasket is made of rubber.

[0008] By adopting the above technical solution, the rubber gasket provides a good grip and cushioning effect, thereby increasing the comfort of the accompanying adult when using the stroller.

[0009] Furthermore, the handle seats are provided in two groups, the two groups of handle seats are symmetrically arranged, and the top of the hand grip is an arc-shaped structure.

[0010] By adopting the above technical solution, the symmetrically arranged handle seats make it convenient for the accompanying adult to use both hands to grasp and push the stroller body forward, ensuring that the pushing process is safer.

[0011] Furthermore, the output end of the servo motor is fixedly connected to the rotating shaft, the rotating shaft is fixedly connected to the main gear, the main gear is meshed with the slave gear, the slave gear is threadedly connected to the screw, and the screw is rotationally connected to the support leg.

[0012] By adopting the above technical solution, when the servo motor is started, it drives the rotating shaft fixedly connected to it and the main gear fixedly connected to the rotating shaft to rotate. Under the meshing connection between the main gear and the slave gear, the slave gear rotates accordingly, and the screw seat and the screw drive the supporting leg to move up and down in an orderly manner.

[0013] Furthermore, the strain gauge sensor and the servo motor are both connected to an external controller.

[0014] By adopting the above technical solution, the strain gauge sensor can transmit the change of its own resistance signal to the controller in time, and the controller controls the start of the servo motor according to the corresponding signal.

[0015] Furthermore, a charging port is provided on the front side of the base, and a warning light is provided above the charging port.

[0016] By adopting the above technical solution, the setting of the charging port and the warning light makes the power status of the cart body clear at a glance, making it easy to charge in time.

[0017] Furthermore, a groove is provided on the base, a baffle is provided on one side of the groove, and slide rails are provided on the top and bottom of the groove.

[0018] By adopting the above technical solution, the arrangement of the groove, baffle and slide rail provides a neat charging port protection mechanism for the cart body.

[0019] Furthermore, a push block is provided on the baffle, the push block is fixedly connected to the baffle, the baffle is slidably connected to the slide rail, and the size of the baffle is larger than the size of the charging port.

[0020] By adopting the above technical solution and setting the push block, the movement of the baffle is more convenient, and the charging port can be easily opened or closed during actual use.

[0021] Furthermore, a protective shell is arranged on the outer side of the servo motor, a ventilation hole is opened on the protective shell, and a water baffle is arranged on the upper side of the outer side of the protective shell.

[0022] By adopting the above technical solution, the provision of the protective shell, ventilation holes and water baffles provides comprehensive protection for the servo motor and prevents the intrusion of moisture and dust.

[0023] Furthermore, the ventilation holes are provided in a plurality of groups, each group of the ventilation holes is provided with a plurality of ventilation holes, and the plurality of ventilation holes are evenly and equidistantly distributed.

[0024] By adopting the above technical solution and designing multiple groups of ventilation holes evenly and equidistantly distributed, the heat generated by the servo motor when it is working can be dissipated simultaneously through the four groups of ventilation holes above the protective shell.

[0025] In summary, the utility model mainly has the following beneficial effects:

[0026] 1. The utility model is provided with an elastic sheet, a strain gauge sensor, a main gear, a slave gear and a support leg. When the accompanying adult releases the gasket of the grip, the middle part of the elastic sheet is no longer compressed and bent, and the resistance of the strain gauge sensor returns to normal. Then the corresponding signal is transmitted to the controller, and the main gear and the slave gear rotate under the action of the started servo motor, tightening the support leg to the ground and automatically completing the fixation. The fixing process has nothing to do with the will of the accompanying adult, and can prevent the stroller body from not being effectively fixed due to negligence, leading to accidents.

[0027] 2. The utility model provides a protective shell, ventilation holes, water baffles, slide rails, baffles and push blocks to protect the servo motor, so as to prevent splashing water droplets from adversely affecting the servo motor when the cart body walks on a splashing ground. In normal use, the servo motor can dissipate heat smoothly. The slide rails, baffles and push blocks enable the cart body to push the push block when not being charged, driving the baffle to move along the slide rail to the side of the charging port to protect it, and to prevent dust and impurities in the air from accumulating at the charging port and affecting subsequent charging. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0029] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0030] Figure 3It is a partial cross-sectional structural schematic diagram of the base of the utility model;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of the handle seat and the hand grip portion of the utility model;

[0032] Figure 5 For this utility model Figure 3 Schematic diagram of the structure enlarged at point A in the middle.

[0033] In the figure: 1. Cart body; 2. Rear wheel; 3. Front wheel; 4. Storage basket; 5. Sleeping basket; 6. Self-locking mechanism; 601. Handle seat; 602. Foot pad; 603. Elastic sheet; 604. Strain gauge sensor; 605. Connecting seat; 606. Hand grip; 607. Gasket; 608. Base; 609. Servo motor; 610. Rotating shaft; 611. Screw seat; 612. Main gear; 613. Slave gear; 614. Screw; 615. Support leg; 7. Protective shell; 8. Ventilation hole; 9. Water baffle; 10. Charging port; 11. Groove; 12. Slide rail; 13. Baffle; 14. Push block; 15. Warning light. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0035] The following describes an embodiment of the utility model based on its overall structure. Embodiment 1:

[0036] A stroller for infants and young children, such as Figure 1-Figure 5As shown, it includes a cart body 1, rear wheels 2, front wheels 3, a storage basket 4 and a sleeping basket 5. The cart body 1 is provided with a self-locking mechanism 6, which includes a handle seat 601 and a base 608. A foot pad 602 is provided on the top of the handle seat 601, an elastic sheet 603 is provided on the top of the foot pad 602, a strain gauge sensor 604 is fixed on the top of the elastic sheet 603, a connecting seat 605 is provided on the outer side of the strain gauge sensor 604, and a hand grip 606 is provided on the top of the connecting seat 605; a servo motor 609 is provided at the bottom of the base 608, a rotating shaft 610 is provided at the output end of the servo motor 609, a main gear 612 is provided on the rotating shaft 610, and slave gears 613 are provided on both sides of the main gear 612. A screw rod 614 runs through the middle of the gear 613 in the longitudinal direction, a screw rod seat 611 is arranged on the top of the screw rod 614, and a support leg 615 is arranged on the screw rod 614. Through the coordinated work of the handle seat 601, the foot pad 602, the elastic sheet 603 and the strain gauge sensor 604, and the cooperation of the servo motor 609 and the gear system, the stroller body 1 is automatically locked when the accompanying adult releases his hand, thereby improving the safety of use. At the same time, after the hand re-grips the gasket 607 of the hand grip 606, the support leg 615 is automatically lifted off the ground, and the restriction on the stroller body 1 is released. The process of automatic locking and unlocking is carried out automatically, which is not affected by the subjective will of the person, and will not cause unexpected situations due to human negligence.

[0037] See also Figure 1 , Figure 2 , Figure 4 A gasket 607 is provided on the top of the hand grip 606. The gasket 607 is made of rubber. The rubber gasket 607 provides a good grip and cushioning effect, which increases the comfort of the accompanying adult when using the stroller. At the same time, the higher friction coefficient of rubber can play an anti-slip role. When the accompanying adult sweats, his hands will not slip easily.

[0038] See also Figure 1 , Figure 2 There are two groups of handle seats 601, and the two groups of handle seats 601 are symmetrically arranged. The top of the hand grip 606 is an arc-shaped structure. The symmetrically arranged handle seats 601 are convenient for the accompanying adults to use both hands to grasp and push the stroller body 1 forward, ensuring that the pushing process is safer. The arc-shaped hand grip 606 provides a more ergonomic design and is more comfortable to grasp.

[0039] See also Figure 1 , Figure 2 , Figure 3The output end of the servo motor 609 is fixedly connected to the rotating shaft 610, the rotating shaft 610 is fixedly connected to the main gear 612, the main gear 612 is meshed with the slave gear 613, the slave gear 613 is threadedly connected to the screw 614, and the screw 614 is rotatably connected to the support leg 615. When the servo motor 609 is started, it drives the rotating shaft 610 fixedly connected thereto and the main gear 612 fixedly connected to the rotating shaft 610 to rotate. Under the meshing connection between the main gear 612 and the slave gear 613, the slave gear 613 rotates accordingly, and the screw seat 611 and the screw 614 drive the support leg 615 to move up and down in an orderly manner. At the same time, through the above settings, the mechanical transmission efficiency and reliability of the self-locking mechanism are ensured, thereby improving the response speed of fixing and unlocking the cart body 1.

[0040] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 The strain gauge sensor 604 and the servo motor 609 are both connected to the external controller, so that the strain gauge sensor 604 transmits the change of its own resistance signal to the controller in time, and the controller controls the start of the servo motor 609 according to the corresponding signal, realizing intelligent control, making the self-locking and unlocking of the cart body 1 more convenient and quick.

[0041] See also Figure 2 , Figure 3 A charging port 10 is provided on the front side of the base 608, and a warning light 15 is provided above the charging port 10. The setting of the charging port 10 and the warning light 15 makes the power status of the cart body 1 clear at a glance, which is convenient for timely charging and ensures the normal use of the cart body 1. The design of the warning light 15 increases the intuitiveness of use. Embodiment 2:

[0042] See also Figure 2 , Figure 3 , Figure 5 A groove 11 is provided on the base 608, a baffle 13 is provided on one side of the groove 11, and slide rails 12 are provided on the top and bottom of the groove 11. The arrangement of the groove 11, the baffle 13 and the slide rail 12 provides a neat protection mechanism for the charging port 10 for the cart body 1 to prevent the intrusion of dust and moisture, thereby indirectly extending the service life of the cart body 1.

[0043] See also Figure 2 , Figure 3 , Figure 5A push block 14 is provided on the baffle 13, and the push block 14 is fixedly connected to the baffle 13, and the baffle 13 is slidably connected to the slide rail 12. The size of the baffle 13 is larger than the size of the charging port 10. The setting of the push block 14 makes the movement of the baffle 13 more convenient. In actual use, the charging port 10 can be easily opened or closed. At the same time, the size of the baffle 13 is larger than the size of the charging port 10, so that the baffle 13 can provide more comprehensive protection for the charging port 10.

[0044] See also Figure 1 , Figure 2 , Figure 3 A protective shell 7 is arranged on the outside of the servo motor 609, and a ventilation hole 8 is opened on the protective shell 7. A water baffle 9 is arranged on the upper part of the outer side of the protective shell 7. The setting of the protective shell 7, the ventilation hole 8 and the water baffle 9 provides comprehensive protection for the servo motor 609 and prevents the invasion of moisture and dust. At the same time, the design of the ventilation hole 8 also contributes to the heat dissipation of the servo motor 609 to avoid the adverse effect of heat on the servo motor 609.

[0045] See also Figure 3 , Figure 5 There are multiple groups of ventilation holes 8, each group of ventilation holes 8 has multiple ventilation holes, and the multiple ventilation holes 8 are evenly and equidistantly distributed. The design of multiple groups of evenly and equidistantly distributed ventilation holes 8 allows the heat generated by the servo motor 609 when working to be dissipated simultaneously through the four groups of ventilation holes 8 above the protective shell 7, thereby improving the heat dissipation efficiency of the servo motor 609 and ensuring the stability and life of the motor after long-term work.

[0046] The implementation principle of the utility model is as follows: first, when the stroller body 1 needs to be used, the accompanying adult holds the gasket 607 of the hand grip 606, and the hand grip 606 is pressed downward to push the elastic sheet 603 at the bottom of the connecting seat 605, so that the middle part of the elastic sheet 603 is bent downward. When the strain gauge sensor 604 senses the deformation of the elastic sheet 603, its resistance changes immediately, and the changed signal is transmitted to the controller. After receiving the corresponding signal, the controller controls the servo motor 609 to start, driving the rotating shaft 610 and the main gear 612 to rotate, so that the slave The gear 613 rotates accordingly, the screw seat 611 and the screw 614 pull the support leg 615 up from the ground, and open the wheel brake of the front wheel 3, so that the stroller body 1 can be smoothly pushed forward; when the accompanying adult's hand moves away from the gasket 607 of the hand grip 606, the elastic sheet 603 is no longer stressed, and thus returns to its original state. After the strain gauge sensor 604 senses the resetting of the elastic sheet 603, the resistance value is also restored, and the signal of the resistance value recovery is transmitted to the controller, which controls the servo motor 6 according to the transmitted signal. 09, driving the rotating shaft 610 and the main gear 612 to rotate in the opposite direction, so that the slave gear 613 rotates in the opposite direction to the previous direction, the screw seat 611 and the screw 614 push the support leg 615 downward, screw it to the ground, and automatically complete the fixing process. Even if the accompanying adult fails to lower the wheel brake of the front wheel 3 due to negligence, the stroller body 1 can remain fixed to a certain extent, thereby improving safety. During use, the heat generated by the servo motor 609 during operation is smoothly dissipated through the openings on both sides of the ventilation hole 8 and the water baffle 9, avoiding the heat from damaging the servo motor. 609 has an adverse effect. When the cart body 1 walks on a wet road, the splashing water droplets are intercepted by the water baffle 9 to prevent them from entering the interior of the protective shell 7 and affecting the subsequent use of the servo motor 609. Finally, when the warning light 15 lights up, indicating that charging is required, the push block 14 can be moved to drive the baffle 13 to move along the slide rail 12 away from the charging port 10, open the charging port 10, and charge in time. When charging is completed, the push block 14 is moved in the opposite direction to make the baffle 13 move along the slide rail 12 to the side of the charging port 10 and close the charging port 10.

[0047] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.

[0048] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A stroller for infants and young children, characterized in that: The stroller comprises a stroller body (1), rear wheels (2), front wheels (3), a storage basket (4) and a sleeping basket (5); the stroller body (1) is provided with a self-locking mechanism (6); the self-locking mechanism (6) comprises a handle seat (601) and a base (608); a pad (602) is provided on the top of the handle seat (601); an elastic sheet (603) is provided on the top of the pad (602); a strain gauge sensor (604) is fixed on the top of the elastic sheet (603); a connecting seat (605) is provided on the outer side of the strain gauge sensor (604); and a hand grip (606) is provided on the top of the connecting seat (605); A servo motor (609) is arranged at the bottom of the base (608); a rotating shaft (610) is arranged at the output end of the servo motor (609); a main gear (612) is arranged on the rotating shaft (610); slave gears (613) are arranged on both sides of the main gear (612); a screw rod (614) is longitudinally penetrated through the middle of the slave gear (613); a screw rod seat (611) is arranged at the top of the screw rod (614); and a supporting leg (615) is arranged on the screw rod (614).

2. The stroller for infants and young children according to claim 1, characterized in that: A gasket (607) is provided on the top of the hand grip (606), and the gasket (607) is made of rubber.

3. The stroller for infants and young children according to claim 1, characterized in that: The handle seats (601) are provided in two groups, and the two groups of handle seats (601) are symmetrically arranged, and the top of the hand grip (606) is an arc-shaped structure.

4. The stroller for infants and young children according to claim 1, characterized in that: The output end of the servo motor (609) is fixedly connected to the rotating shaft (610), the rotating shaft (610) is fixedly connected to the main gear (612), the main gear (612) is meshed with the slave gear (613), the slave gear (613) is threadedly connected to the screw rod (614), and the screw rod (614) is rotationally connected to the support leg (615).

5. The stroller for infants and young children according to claim 1, characterized in that: The strain gauge sensor (604) and the servo motor (609) are both connected to an external controller.

6. The stroller for infants and young children according to claim 1, characterized in that: A charging port (10) is provided on the front side of the base (608), and a warning light (15) is provided above the charging port (10).

7. The stroller for infants and young children according to claim 1, characterized in that: The base (608) is provided with a groove (11), a baffle (13) is provided on one side of the groove (11), and slide rails (12) are provided on the top and bottom of the groove (11).

8. The stroller for infants and young children according to claim 7, characterized in that: A push block (14) is provided on the baffle (13), the push block (14) is fixedly connected to the baffle (13), the baffle (13) is slidably connected to the slide rail (12), and the size of the baffle (13) is larger than the size of the charging port (10).

9. The stroller for infants and young children according to claim 1, characterized in that: A protective shell (7) is arranged on the outside of the servo motor (609), a ventilation hole (8) is opened on the protective shell (7), and a water baffle (9) is arranged on the upper part of the outside of the protective shell (7).

10. The stroller for infants and young children according to claim 9, characterized in that: The ventilation holes (8) are provided in a plurality of groups, each group of the ventilation holes (8) is provided with a plurality of ventilation holes, and the plurality of ventilation holes (8) are evenly and equidistantly distributed.

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