CN110641544A - Combined child stroller with self-locking mechanism - Google Patents

Abstract

The invention discloses a combined child stroller with a self-locking mechanism, comprising: a chassis, a rear wheel group, a self-locking mechanism, a push rod, a frame and a front wheel group; the self-locking mechanism includes a brake disc, a movable Disk, connecting rod mechanism, rotating shaft, telescopic rod, the brake disk is fixedly connected with the rotating shaft, the rotating shaft is fixedly connected with the axle centers of the two rear wheel sets respectively, the movable disk is located on one side of the brake disk, and one end of the telescopic rod passes through the booster mechanism Rotating connection with the bottom end of the push rod. The invention adopts a mechanical self-locking mechanism, which automatically unlocks when the cart is pushed, and automatically locks the cart when parking, which solves the problem of the cart slipping and does not need an electric control system, which is beneficial to use on an ordinary children's stroller; the cart adopts a combination The frame and the push rod can be disassembled. When the children grow older and do not need to use the stroller, the frame can be removed, the push rod can be moved forward as a handle, and the stroller can be used as a scooter to meet the needs of different age groups. Children's usage needs.

Description

A combined children's stroller with a self-locking mechanism

technical field

The invention relates to a children's product, in particular to a combined children's stroller with a self-locking mechanism.

Background technique

As a necessary tool for children to travel, strollers have been used by a large number of users. At present, in addition to the basic requirements of stability and safety of the stroller, users are paying more and more attention to the characteristics of the stroller, such as small size, light weight, and foldability.

Most of the existing strollers are in the form of hand push. This kind of stroller does not have a self-locking function, that is, the stroller can be automatically locked after the parents let go of the hand, so the accident of slipping caused by the negligence of the parents often occurs, causing serious damage to infants and young children. harm. Some electric strollers use an electric drive structure to lock the wheels. For example, an intelligent electric baby stroller with application number 201820347520.3 uses the braking device set in the rear wheel set, combined with the power feedback booster detector set on the handle, When the human hand is released, the controller will control the braking device to brake the rear wheel group to achieve the effect of automatic locking. However, the above method can only be used based on electric carts, and can only be realized based on the power supply and electronic control system, and cannot be used in ordinary carts. Promote on. In addition, the practical age of the stroller is 3-36 months. As the age increases, the stroller gradually loses its use value, and it has no meaning for older children, causing waste.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a combined children's stroller with a self-locking mechanism to solve the above-mentioned problems in the background art.

To achieve the above object, the present invention provides the following technical solutions:

A combined children's stroller with a self-locking mechanism, comprising: a chassis, a rear wheel set, a self-locking mechanism, a push rod, a frame and a front wheel set, the rear wheel set is installed on both sides of the chassis, and the car The frame and the chassis are detachably connected, and the push rod is rotatably installed at the rear end of the frame;

The self-locking mechanism includes: a brake disc, a movable disc, a connecting rod mechanism, a rotating shaft, and a telescopic rod. The brake disc is fixedly connected with the rotating shaft, and the rotating shafts are respectively fixedly connected with the shaft centers of the two rear wheel groups. Its one side can be movably sleeved on the rotating shaft, the two ends of the link mechanism are hinged with the movable plate and the telescopic rod respectively, and the other end of the telescopic rod is rotatably connected with the bottom end of the push rod through a force-increasing mechanism;

The bottom of the push rod and the hinge point with the frame are both set as a first detachable structure, the front wheel set is connected with the frame through a second detachable structure, and the top of the longitudinal rotation shaft of the front wheel set is set to be detachable from the push rod. The connecting head of the rod connection, the pedal is fixedly installed on the chassis.

As a further solution of the present invention: a light-weight spring is sleeved on the rotating shaft.

As a further solution of the present invention: the boosting mechanism includes a large oil cylinder and a small oil cylinder, the diameter of the large oil cylinder is larger than the diameter of the small oil cylinder, the rodless ends of the large oil cylinder and the small oil cylinder are communicated with each other, the piston rod of the large oil cylinder and the telescopic rod connected, the piston rod of the small oil cylinder is hinged with the bottom end of the push rod.

As a further solution of the present invention: the first detachable structure is a plug-type connection structure.

As a further solution of the present invention: the second detachable structure is a threaded connection structure.

As a further solution of the present invention: the front wheel set is a double-wheeled universal wheel set, and is installed on the chassis.

As a further solution of the present invention: a ceramic layer is provided on the surface opposite to the brake disc and the movable disc.

Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts a mechanical self-locking mechanism, which can be automatically unlocked when the cart is pushed and automatically locked when the cart is parked, which solves the problem of the cart slipping and does not require an electric control system. , which is convenient for use on ordinary children's strollers; the stroller adopts a combined structure, and the frame and push rod can be disassembled. When the child grows older and does not need to use the stroller, the frame can be removed, and the push rod can be moved forward as a handle , the cart can be used as a scooter to meet the needs of children of different ages.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention as a cart in use.

FIG. 2 is a schematic structural diagram of the chassis of the present invention.

FIG. 3 is a schematic structural diagram of the present invention as a scooter in use.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIGS. 1 to 3. In an embodiment of the present invention, a combined stroller with a self-locking mechanism includes: a chassis 1, a rear wheel set 2, a self-locking mechanism 3, a push rod 4, a frame 5 and a front Wheel set 6, the rear wheel set 2 is installed on both sides of the chassis 1, the frame 5 and the chassis 1 are detachably connected by means of screws, and the push rod 4 is rotatably installed on the rear end of the frame 5;

The self-locking mechanism 3 includes: a brake disc 31, a movable disc 32, a link mechanism 33, a rotating shaft 34, and a telescopic rod 36. The brake disc 31 is fixedly connected to the rotating shaft 34, and the rotating shafts 34 are respectively connected with the shafts of the two rear wheel sets 2. The heart is fixedly connected, the movable disc 32 is located on one side of the brake disc 31, and can be movably sleeved on the rotating shaft 34. The two ends of the link mechanism 33 are hinged with the movable disc 32 and the telescopic rod 36, and the telescopic rod 36 is on the other side. One end can be directly rotatably connected with the bottom end of the push rod 4, or the telescopic rod 36 can be connected with a booster mechanism, which is rotatably connected with the bottom end of the push rod 4, and the top end of the push rod 4 is set as a handle for pushing When the push rod 4 rotates around the hinge point with the frame 5, the pulling telescopic rod 36 is moved, and the movable disc 32 is pulled along the rotating shaft 34 to move away from the brake disc 31 through the link mechanism 33, so that the movable disc 32 and the brake disc are moved. 31 is out of contact, so that the rear wheel set is unlocked, and the cart can be pushed to move, and after the cart is stopped, the human hand is released from the push rod 4, and the light spring 39 set on the rotating shaft 34 is used to make the movable plate 32 return to its original position, The movable disc 32 is in contact with the brake disc 31, and the rear wheel is locked by the friction of the ceramic layers on the surfaces of the two, so that the cart cannot move. The function of the force boosting mechanism is to increase the output force of the telescopic rod 36, which can be realized by two oil cylinders with different diameters, including the large oil cylinder 37 and the small oil cylinder 38. The diameter of the large oil cylinder 37 is larger than that of the small oil cylinder 38, and the large oil cylinder 37 and The non-rod ends of the small oil cylinder 38 are connected to each other, the piston rod of the large oil cylinder 37 is connected with the telescopic rod 36, the piston rod of the small oil cylinder 38 is hinged with the bottom end of the push rod 4, and the push rod 4 acts on the small oil cylinder 38, because the small oil cylinder 38 The cylinder diameter is small, and the hydraulic pressure at the non-rod end is the same, so a larger force is output from the end of the large oil cylinder 37, which is beneficial to the movement of the movable plate 32.

The bottom of the push rod 4 and the hinge point with the frame 5 are provided with a first detachable structure 41. The first detachable structure 41 can be connected by a bolt. Removing the bolt can remove the push rod 4 from the bottom and the frame. 5 is separated, and the push rod 4 is removed separately. The front wheel set 6 is a universal wheel set of two-wheel combination, which is installed on the chassis 1 and is connected with the frame 5 through the second detachable structure 62. The second detachable The structure 62 can be a threaded connection structure. The top end of the longitudinal shaft of the front wheel set 6 is provided with a connecting head 61 that can be connected with the push rod 4. The connecting head 61 is similar to the first detachable structure 41, and the removed push rod 4 can be installed on the On the connecting head 61, the push rod 4 is used as a faucet handle for controlling the steering of the front wheel set 6. In addition, the pedal 7 is fixedly installed on the chassis 1. In this way, the frame 5 is removed, and the push rod 4 is moved to the front wheel set 6. , the cart can be used as a scooter to meet the use of children of different ages.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (7)

1. A modular stroller having a self-locking mechanism, comprising: the bicycle comprises a chassis (1), a rear wheel set (2), a self-locking mechanism (3), a push rod (4), a frame (5) and a front wheel set (6), wherein the rear wheel set (2) is arranged on two sides of the chassis (1), the frame (5) is detachably connected with the chassis (1), and the push rod (4) is rotatably arranged at the tail end of the frame (5); the method is characterized in that: the self-locking mechanism (3) comprises: the brake disc (31) is fixedly connected with the rotating shaft (34), the rotating shaft (34) is fixedly connected with the axes of the two rear wheel sets (2) respectively, the movable disc (32) is positioned on one side of the brake disc (31) relative to the brake disc and can be movably sleeved on the rotating shaft (34), two ends of the connecting rod mechanism (33) are hinged with the movable disc (32) and the telescopic rod (36) respectively, and the other end of the telescopic rod (36) is rotatably connected with the bottom end of the push rod (4) through a force increasing mechanism; push rod (4) bottom and with the articulated punishment department of frame (5) all set up to first detachable construction (41), preceding wheelset (6) are connected with frame (5) through second detachable construction (62), and the vertical pivot top of preceding wheelset (6) sets up to connector (61) that can be connected with push rod (4), fixed mounting footboard (7) on chassis (1).

2. The modular stroller of claim 1, further comprising a self-locking mechanism, wherein: the rotating shaft (34) is sleeved with a light spring (39).

3. The modular stroller of claim 1, further comprising a self-locking mechanism, wherein: the force-increasing mechanism comprises a large oil cylinder (37) and a small oil cylinder (38), the diameter of the large oil cylinder (37) is larger than that of the small oil cylinder (38), the rod-free ends of the large oil cylinder (37) and the small oil cylinder (38) are communicated with each other, a piston rod of the large oil cylinder (37) is connected with a telescopic rod (36), and a piston rod of the small oil cylinder (38) is hinged to the bottom end of a push rod (4).

4. The modular stroller of claim 1, further comprising a self-locking mechanism, wherein: the first detachable structure (41) is a bolt type connecting structure.

5. The modular stroller of claim 4, wherein: the second detachable structure (62) is a threaded connection structure.

6. The modular stroller of claim 1, further comprising a self-locking mechanism, wherein: the front wheel set (6) is a double-wheel universal wheel set and is arranged on the chassis (1).

7. The modular stroller of claim 1, further comprising a self-locking mechanism, wherein: the ceramic layer is arranged on the surface of the brake disc (31) opposite to the movable disc (32).

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