CN104354747A - Sliding folding and unfolding mechanism of baby carriage - Google Patents

Abstract

The invention relates to the technical field of infant products, and discloses a sliding folding and unfolding mechanism of a baby carriage, which comprises an armrest mechanism, a folding and unfolding mechanism and a seat mechanism, wherein the seat mechanism is connected with the armrest mechanism through a connecting piece, the seat mechanism is used for arranging a baby seat, the lower end of the folding and unfolding mechanism is provided with a wheel set, the folding and unfolding mechanism is connected with the lower ends of two sides of the armrest mechanism through fixed joints, the folding and unfolding mechanism is connected above the fixed joints at two sides of the armrest mechanism in a sliding way through sliding joints, two sides of the armrest mechanism are respectively provided with an elastic clamping mechanism, and the elastic clamping mechanisms are used for locking the sliding joints when the baby carriage is folded and unfolded. The safety performance is high.

Description

Sliding retractable mechanism for baby stroller

technical field

The present invention relates to the technical field of infant products, in particular to a sliding retractable mechanism for a stroller.

Background technique

Baby stroller is a tool cart designed for the convenience of baby's outdoor activities. It is the baby's favorite means of transportation for walking, and it is also a must for mothers to take their babies to the street for shopping. With the development of science and technology and the improvement of people's living standards, there are higher requirements on the operability and structural safety of baby strollers.

At present, the general stroller is to set a foldable structure on each joint of the frame to realize its foldable performance, so that the stroller has a retractable function. Forming the inter-hinged structure of the three plays a better effect for the folding of the baby carriage. However, this kind of folding mechanism of the existing baby carriage is actually realized through more linkage structures, and the structure is complicated, which increases the The weight of the car body is also not convenient for the baby carriage to move after it is folded, which causes a lot of inconvenience to the user. Moreover, the existing baby carriage is easy to be folded by the baby carriage when people use it or when the baby is playing. The joint is pinched, and the safety performance is not high.

Contents of the invention

The object of the present invention is to overcome the deficiencies in the prior art and provide a sliding retractable mechanism for a baby carriage. When retracted, it can be maintained in a relatively stable state, which provides convenience for users to use the baby carriage and has high safety performance.

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

A sliding retractable mechanism for a stroller, comprising an armrest mechanism, a retractable mechanism and a seat mechanism, the seat mechanism is connected to the armrest mechanism through a connecting piece, the seat mechanism is used to set a baby seat, the lower end of the retractable mechanism A wheel set is provided, the retractable mechanism is connected to the lower ends of both sides of the armrest mechanism through fixed joints, and the retractable mechanism is slidably connected above the fixed joints on both sides of the armrest mechanism through sliding joints. A fastening mechanism, the elastic fastening mechanism is used for locking the sliding joint when the stroller is unfolded.

The armrest mechanism includes a U-shaped tube, a U-shaped armrest whose lower end is respectively inserted in the corresponding end of the U-shaped tube, a push-and-hold part arranged in the middle part of the U-shaped armrest, and a clamping switch arranged on the push-and-hold part. The connecting end of the handrail and the U-shaped pipe is provided with a positioning sleeve, and the clamping switch is connected with the elastic clamping mechanism, and the clamping switch is used to control the elastic clamping mechanism to open/lock the sliding joint.

The elastic clamping mechanism is composed of a traction cable that passes through the U-shaped handrail, two first elastic bayonet pins that are respectively connected to the two ends of the traction rope, a bayonet slide block that is connected to the first elastic bayonet pin through an impact block, and The second elastic detent is connected to the end of the detent slider. The first elastic detent is used to lock the corresponding sliding joint when the stroller is folded. The second elastic detent is used to lock the corresponding sliding joint when the stroller is unfolded. Closely corresponding to the sliding joint, the traction cable is connected with the clamping switch.

The retractable mechanism also includes a first front foot and a first rear foot hinged at both ends of the sliding joint on one side of the armrest mechanism, a second front foot and a second rear foot hinged at both ends of the sliding joint on the other side of the armrest mechanism , the first front rod and the first rear rod connected to both ends of the fixed joint on one side of the armrest mechanism and the second front rod and the second rear rod connected to the two ends of the fixed joint on the other side of the armrest mechanism, the The other end of the first front rod and the first rear rod is connected with the corresponding first front foot and the first rear foot through a hinged foot joint, and the other end of the second front rod and the second rear rod is connected through a hinged foot joint Connect with the corresponding second front foot and second rear foot.

The first forefoot and the second forefoot of the retractable mechanism are all arc-shaped, and the connecting ends of the first forefoot and the second forefoot to the sliding joint are provided with a front joint, which is used to be hinged with the sliding joint. A pedal is provided between the front foot and the second front foot near the lower end, and a rear joint is provided at the connection end between the first rear foot and the second rear foot and the sliding joint, and the rear joint is used to be hinged with the sliding joint. A reinforcement bar is arranged between the first rear foot and the second rear foot of the mechanism near the lower end.

The connecting ends of the first front bar and the second front bar of the retractable mechanism and the fixed joint are provided with a front joint, and the front joint is used to be hinged with the fixed joint, and the first rear bar and the second rear bar are connected with the fixed joint. The connecting end is provided with a rear joint for hinged connection with the fixed joint.

Described wheel set comprises two front wheel sets and two rear wheel sets, and this front wheel set is made up of a front wheel base and the front wheel that is located at both sides of front wheel base, and this rear wheel set is made up of a rear wheel base and is located at rear wheel The rear wheels on both sides of the seat are formed, and the two front wheel groups are correspondingly connected to the first front foot and the second front foot lower end by the front wheel seat, and the two rear wheel groups are correspondingly connected to the first rear foot and the second rear foot lower end by the rear wheel seat.

The beneficial effects of the present invention are: the structure of the retractable mechanism is simple and stable, the weight of the car body is reduced, and the operation is simple and convenient. The fixed joints fixedly connected to the armrest mechanism limit the ends of the front rods and the rear rods, and then connect them by sliding The sliding joints on the armrest mechanism drive the front feet and rear feet. Driven by the sliding joints, the front feet and rear feet act on the front rods and rear rods in a linked manner. When the sliding joints move up and down along the armrest mechanism, the front and rear legs The feet and the front and rear rods are close to or far away from the armrest mechanism, thereby realizing the retraction of the baby carriage. With the locking effect of the clamping mechanism, it is ensured that the sliding joints can be kept in a relatively stable state when the baby carriage is retracted. Random displacement makes the structure stable when the stroller is unfolded, and it is easy to move when the stroller is folded, which provides convenience for the user to use the stroller. In addition, each hinge is connected through the transition between the front and rear joints and the foot joints. When unfolding, a larger gap will be formed at each hinge, thereby preventing fingers from being pinched when adults use it or when infants play, and the safety performance is high.

Description of drawings

Fig. 1 is a structural representation of the present invention.

Figure 2 is an enlarged partial cross-sectional view at A in Figure 1.

Fig. 3 is the enlarged partial cross-sectional view of B in Fig. 2.

Fig. 4 is the expanded schematic diagram of the use state of the present invention.

Fig. 5 is a schematic diagram of the folded use state of the present invention.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing of description:

As shown in Figures 1-5, the present invention relates to a sliding retractable mechanism 2 for a stroller, including an armrest mechanism 1, a retractable mechanism 2, and a seat mechanism 3. The seat mechanism 3 is connected to the armrest mechanism 1 through a connecting piece 6. Connected, the seat mechanism 3 is used to set the baby seat, the lower end of the retractable mechanism 2 is provided with a wheel set 5, the retractable mechanism 2 is connected to the lower ends of both sides of the armrest mechanism 1 through the fixed joint 2a, and the retractable mechanism 2 slides The joint 2b is slidably connected above the fixed joints 2a on both sides of the armrest mechanism 1, and the two sides of the armrest mechanism 1 are provided with elastic locking mechanisms 4, which are used to lock the sliding joint 2b when the stroller is unfolded.

As shown in Figures 1, 4, and 5, the armrest mechanism 1 includes a U-shaped tube 11, a U-shaped armrest 12 whose lower end is respectively inserted in the corresponding end of the U-shaped tube 11, and a push-and-grip part located in the middle of the U-shaped armrest 12. 13 and the fastening switch 14 located on the push grip part 13, the connecting end of the U-shaped armrest 12 and the U-shaped pipe 11 is provided with a positioning sleeve 16, the fastening switch 14 is connected with the elastic fastening mechanism 4, and the fastening switch 14 is used to control the elastic locking mechanism 4 to open/lock the sliding joint 2b, and the lower end of the U-shaped tube 11 is provided with a support portion 15 .

As shown in Figures 1 and 2, the elastic clamping mechanism 4 is composed of a traction rope 41 which is installed in the U-shaped handrail 12, and two traction ropes 41 are respectively connected to the first elastic bayonet 42 at both ends of the traction rope 41, and the first elastic detent 42 is connected to the first elastic locking pin 42 through the impact block 43. A bayonet slider 44 connected with an elastic bayonet 42 and a second elastic bayonet 45 connected to the end of the bayonet slide 44 are composed of the first elastic bayonet 42 for locking the corresponding baby carriage when it is folded. The sliding joint 2b, the second elastic locking pin 45 is used to lock the corresponding sliding joint 2b when the stroller is unfolded, and the traction cable 41 is connected with the locking switch 14 .

As shown in Figures 1, 2, 4, and 5, the retractable mechanism 2 also includes a first front foot 21 and a first rear foot 22 that are hinged to both ends of the sliding joint 2b on one side of the armrest mechanism 1 and are hinged to the armrest mechanism. 1 The second front foot 23 and the second rear foot 24 at the two ends of the sliding joint 2b on the other side, the first front rod 25 and the first rear rod 26 connected together to the two ends of the fixed joint 2a on one side of the armrest mechanism 1 and together The second front rod 27 and the second rear rod 28 that are connected at the two ends of the fixed joint 2a on the other side of the armrest mechanism 1, the other end of the first front rod 25 and the first rear rod 26 are connected to the corresponding joint through the hinged foot joint 2g. The first front foot 21 is connected with the first rear foot 22, and the other end of the second front rod 27 and the second rear rod 28 is connected with the corresponding second front foot 23 and the second rear foot 24 through the hinged foot joint 2g.

Further, as shown in Figures 1, 2, 4, and 5, the first front foot 21 and the second front foot 23 of the retractable mechanism 2 are all arc-shaped, and the connection between the first front foot 21 and the second front foot 23 and the sliding joint 2b The end is provided with front joint 2c, and this front joint 2c is used for being hinged with sliding joint 2b, is provided with pedal 2e between the first front foot 21 and the second front foot 23 near the lower end, and the first rear foot 22 and the second The connecting end of the rear foot 24 and the sliding joint 2b is provided with a rear joint 2d, and the rear joint 2d is used to be hinged with the sliding joint 2b, and the first rear foot 22 and the second rear foot 24 of the retracting mechanism 2 are provided near the lower end. Strengthening rod 2f.

Further, as shown in Figures 1, 2, 4, and 5, the connecting ends of the first front bar 25 and the second front bar 27 of the retractable mechanism 2 and the fixed joint 2a are provided with a front joint 2c, which is used for Hinged with the fixed joint 2a, the connection ends of the first rear rod 26 and the second rear rod 28 with the fixed joint 2a are provided with a rear joint 2d, and the rear joint 2d is used to be hinged with the fixed joint 2a.

So far, each front and rear foot (21, 22, 23, 24), each front and rear rod (25, 26, 27, 28) and between the fixed joint 2a and the sliding joint 2b form a mutually hinged sliding retractable mechanism, The joints are flexible and flexible, and the fixed joint 2a is fixed on the U-shaped tube 11 of the armrest mechanism 1, and the sliding joint 2b can slide freely on the U-shaped tube 11 of the armrest mechanism 1 above the fixed joint 2a, and further , under the action of the locking switch 14 on the elastic locking mechanism 4, the sliding joint 2b is locked/released, and the sliding joint 2b can be locked stably when the stroller is folded/deployed, and the sliding joint 2b is restricted from the armrest mechanism The U-shaped tube 11 of 1 slides upward to stabilize the folded/deployed state of the stroller, and the operation is simple and convenient.

As shown in Figures 1, 3, 4, and 5, the wheel set 5 includes two front wheel sets 51 and two rear wheel sets 52. 512, the rear wheel set 52 is composed of a rear wheel base 521 and the rear wheels 522 arranged on both sides of the rear wheel base, and the two front wheel sets 51 are correspondingly connected to the lower ends of the first front foot 21 and the second front foot 23 through the front wheel base 511 , the two rear wheel sets 52 are correspondingly connected to the lower ends of the first rear foot 22 and the second rear foot 24 through the rear wheel seat 521, wherein each rear wheel set 52 is also provided with a shock absorber (not shown), and each shock absorber A brake pedal (not shown) is attached.

When the user needs to put away the stroller, he only needs to hold and press the clamping switch 14 on the armrest mechanism 1 with one hand and push forward slightly, so that the clamping switch 14 acts on the traction of the elastic clamping mechanism 4 connected to it On the cable 41, the first elastic bayonet 42 at the two ends of the traction cable 41 retracts into the handrail mechanism 1. At this time, the connecting end of the U-shaped handrail 12 and the U-shaped pipe 11 also retracts in the U-shaped pipe 11, and the retracted The first elastic detent 42 is pushed toward the impact block 43, acting on the impact block 43, so that the impact block 43 pushes the bayonet slider 44, and the advancing bayonet slider 44 acts on the second elastic detent 45, so that the second The elastic bayonet 45 retracts into the armrest mechanism 1 and releases the sliding joint 2b. At this time, since the fixed joint 2a is fixed on the armrest joint, when the armrest mechanism 1 advances, the released sliding joint 2b is forced to move along the handrail mechanism 1 in the opposite direction of the propulsion direction, the first front foot 21, the second front foot 23, the first rear foot 22, the second rear foot 24, the first front rod 25, the second front rod 27, the first Under the action of the relative motion of the fixed joint 2a and the sliding joint 2b, the rear rod 26 and the second rear rod 28 make the respective hinges approach the armrest mechanism 1, thereby realizing the folding of the stroller.

When the user needs to unfold the stroller, he only needs to step on the reinforcement bar 2f between the two rear wheel sets 52 with one foot, hold and press the fastening switch 14 on the armrest mechanism 1 with one hand and lift it toward the direction where he is. pull, so that the locking switch 14 acts on the locking mechanism, and the first elastic locking pin 42 and the second elastic locking pin 45 release the corresponding sliding joint 2b. At this time, the sliding joint 2b moves along the armrest mechanism 1 to the corresponding fixed joint. 2a slides, while the sliding joint 2b slides, the first front foot 21, the second front foot 23, the first rear foot 22, the second rear foot 24, the first front rod 25, the second front rod 27, the first rear rod 26 and the second The hinges of the two rear rods 28 leave the armrest mechanism 1 respectively, so as to realize the expansion of the stroller.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Therefore, on the premise of not departing from the design spirit of the present invention, ordinary engineers and technicians in the field understand the structure, features and principles of the present invention. The equivalent changes or decorations done should all fall within the protection scope of the patent application for the present invention.

Claims (7)

1. A sliding retractable mechanism for a stroller, comprising an armrest mechanism, a retractable mechanism and a seat mechanism, the seat mechanism is connected with the armrest mechanism through a connecting piece, the seat mechanism is used to set a baby seat, the retractable The lower end of the mechanism is provided with a wheel set, which is characterized in that: the retractable mechanism is connected to the lower ends of both sides of the armrest mechanism through fixed joints, and the retractable mechanism is slidably connected above the fixed joints on both sides of the armrest mechanism through sliding joints, and the two sides of the armrest mechanism Elastic clamping mechanisms are respectively provided inside, and the elastic clamping mechanisms are used to lock the sliding joints when the stroller is unfolded. 2. The sliding retractable mechanism of the stroller according to claim 1, characterized in that: the armrest mechanism comprises a U-shaped tube, a U-shaped armrest whose lower end is respectively inserted into the corresponding end of the U-shaped tube, and a The push-and-hold part in the middle of the U-shaped armrest and the clamping switch arranged on the push-and-hold part, the connecting end of the U-shaped armrest and the U-shaped tube is provided with a positioning sleeve, the clamping switch is connected with the elastic clamping mechanism, and the clamping switch It is used to control the opening/locking of the sliding joint by the elastic clamping mechanism. 3. The sliding and retracting mechanism of the stroller according to claim 2, characterized in that: the elastic clamping mechanism consists of a traction cable pierced in the U-shaped armrest, and two traction cables respectively connected to the first two ends of the traction cable. The elastic bayonet, the bayonet slider connected to the first elastic bayonet through the impact block, and the second elastic bayonet connected to the end of the bayonet slider, the first elastic bayonet is used when the baby carriage is folded The corresponding sliding joint is locked, the second elastic bayonet is used to lock the corresponding sliding joint when the stroller is unfolded, and the traction cable is connected with the locking switch. 4. The sliding retractable mechanism of the stroller according to claim 1, characterized in that: the retractable mechanism further comprises a first front leg and a first rear leg hinged to both ends of the sliding joint on one side of the armrest mechanism, The second front foot and the second rear foot that are hinged at the two ends of the sliding joint on the other side of the armrest mechanism, the first front rod and the first rear rod that are connected to the two ends of the fixed joint on one side of the armrest mechanism, and are connected to the The second front rod and the second rear rod at the two ends of the fixed joint on the other side of the armrest mechanism, the other ends of the first front rod and the first rear rod are connected to the corresponding first front foot and the first rear foot through the hinged foot joint. connected, the other ends of the second front rod and the second rear rod are connected with the corresponding second front feet and second rear feet through hinged foot joints. 5. The sliding and retractable mechanism of the stroller according to claim 4, characterized in that: the first front leg and the second front leg of the retractable mechanism are arc-shaped, and the first front leg and the second front leg are connected with the sliding joint The connecting end is provided with a front joint, which is used to be hinged with the sliding joint, and a pedal is provided between the first front foot and the second front foot near the lower end, and the first rear foot and the second rear foot are connected to the sliding joint. The connecting end is provided with a rear joint, and the rear joint is used to be hinged with the sliding joint, and a strengthening rod is provided between the first rear foot and the second rear foot of the retracting mechanism near the lower end. 6. The sliding retractable mechanism for baby stroller according to claim 4, characterized in that: the connecting ends of the first front rod and the second front rod of the retractable mechanism and the fixed joint are provided with a front joint, and the front joint For being hinged with the fixed joint, the connecting ends of the first rear rod and the second rear rod and the fixed joint are provided with a rear joint, and the rear joint is used for hinged with the fixed joint. 7. The sliding retractable mechanism for baby stroller according to claim 1 or 4, characterized in that: said wheel set comprises two front wheel sets and two rear wheel sets, and said front wheel set consists of a front wheel seat and a The front wheels on both sides of the front wheel base are composed of a rear wheel base and the rear wheels on both sides of the rear wheel base. The two front wheels are connected to the lower ends of the first front foot and the second front foot through the front wheel base , the two rear wheel sets are correspondingly connected to the lower ends of the first rear foot and the second rear foot through the rear wheel seat.