CN103183048B - foldable stroller frame - Google Patents

Abstract

The invention discloses a folding baby carriage frame body, which comprises an underframe provided with wheel sets and a handle pipe, wherein the wheel sets are arranged on the underframe; the chassis comprises a front leg tube and a rear leg tube, the front leg tube is rotatably connected with the rear leg tube, and the rear ends of the rear leg tubes are respectively provided with a rear fixing seat; each rear fixed seat is rotatably connected with the corresponding end of the handle pipe; a clamping mechanism which can control the handle pipe to pivot or fix relative to the corresponding rear fixing seat is arranged between the handle pipe and the corresponding rear fixing seat, and the handle pipe fixing device also comprises a corresponding release mechanism which controls the clamping mechanism; a linkage mechanism which can enable the front foot pipe to rotate and draw close towards the rear foot pipe simultaneously when the handle pipe rotates and draws close towards the rear foot pipe is arranged between the handle pipe and the front foot pipe; a seat framework is arranged on the underframe. The invention is composed of a front foot tube, a rear foot tube and a handle tube, has large unfolding space, is convenient for the seat to rotate after being unfolded, and has simple structure and easy manufacture. Finally, the utility model can be folded into the effect of small overall dimension, and is very stable and safe in use when in work.

Description

foldable stroller frame

technical field

The invention relates to a foldable stroller frame body, which structure can be used in a stroller with a rotatable seat.

Background technique

In the prior art, there are several fixing methods for the seat of a general stroller: 1. Fixed type, that is, the seat is fixed on the frame of the stroller and cannot be disassembled. The baby faces forward, with its back to the mother. This method is less conducive to the interaction between mother and baby. 2. The seat is detachable. When the mother wants to communicate with the baby, the seat can be removed and installed on the frame in a different direction, so that the baby can face the mother. More and more consumers prefer strollers with interchangeable seats.

The above-mentioned seats can be changed and need to be dismantled and reinstalled, which is inconvenient to operate when the operator has something in his hand. Consumers desire a stroller in which the seat can be reversed without removing the seat. However, realizing the reversing function by directly rotating the seat requires a large space. Due to structural limitations, the general stroller frame cannot provide the large space required for seat rotation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a foldable stroller frame with a large space required for the rotating seat to realize the reversing function.

The present invention can take following technical scheme:

A foldable stroller frame body, comprising a chassis provided with a wheel set, and a handle tube; the chassis includes a front leg tube and a rear leg tube, the front leg tube and the rear leg tube are rotatably connected, and the rear ends of the rear leg tubes are respectively provided with There is a rear fixing seat; each of the rear fixing seats is rotatably connected to the corresponding end of the handle pipe; between the handle pipe and the corresponding rear fixing seat, there is a handle pipe that can be controlled to pivot or fix relative to the corresponding rear fixing seat The locking mechanism also includes a corresponding release mechanism for controlling the locking mechanism; when the handle tube is rotated and moved closer to the rear tube between the handle tube and the front tube, the front tube can be rotated and moved closer to the rear tube at the same time. A linkage mechanism; a seat frame is arranged on the bottom frame.

The present invention solves the problem and can further take the following improvement measures:

The linkage mechanism includes a front foldable tube, a rear foldable tube, and a connecting rod. One end of the front foldable tube is hinged to the front leg tube, the other end is hinged to one end of the rear foldable tube, and the middle part of the rear foldable tube is hinged to the rear leg tube. The other end of the rear folding tube is hinged with one end of the connecting rod, and the other end of the connecting rod is hinged with the handle pipe.

The front leg tube and the rear leg tube are rotatably connected through the upper support seat, and the front leg tube and the rear leg tube are respectively rotatably connected with the upper support seat.

The locking mechanism includes a locking part, a locking part for a part of the locking part to extend into, and an elastic member that generates elastic force to the locking part so that the locking part extends into the locking part; the locking part is provided with On the rear fixing seat, the locking piece and the handle tube can be connected in a movable manner along the axial direction of the handle tube, and the release mechanism is connected with the locking piece.

The locking member is located in the handle tube, its outer diameter matches the inner diameter of the handle tube, and the locking part is a locking groove.

The release mechanism includes a pull rod and a limiter, the pull rod is reciprocally movably sleeved on the handle tube through the limiter, and the pull rod is connected to the locking member through a linkage.

The link is a flexible wire.

The release mechanism is arranged on the handle tube.

An upper support frame is arranged on the upper support seat, and the seat frame is erected on the upper support.

The front leg tube and the rear leg tube are U-shaped tubes.

The above-mentioned technical scheme has such technical effects:

1. The foldable stroller frame of the present invention is composed of front leg tubes, rear leg tubes, and handle tubes. It can be expanded in a large space, and the seat is easy to rotate after unfolding. It has a simple structure and is easy to manufacture.

2. The frame body of the foldable baby carriage of the present invention, through the release mechanism and the locking mechanism, the front leg tube, the rear leg tube, and the handle tube are moved closer to each other by the handle tube through the linkage mechanism, and folded; thus, the present invention can finally be folded Folds down to a very small form factor, making it very easy to store and carry. Moreover, the mechanism of the present invention is reliable in design, very stable in operation, safe in use, and can avoid accidents caused by accidental folding.

Description of drawings

Fig. 1 and Fig. 2 are schematic diagrams of different views of the foldable stroller frame body of the present invention.

Fig. 3 is a schematic diagram of an exploded structure of a foldable stroller frame of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the handle tube of the foldable stroller frame body of the present invention.

Fig. 5 is an enlarged schematic view of the structure near the rear fixing seat.

FIG. 6 is a schematic diagram of the connection between the locking member and the release mechanism.

Fig. 7 is a schematic diagram of folding the frame body of the foldable stroller.

detailed description

The present invention will be specifically described below in conjunction with specific embodiments.

Embodiment: As shown in Figures 1 to 7, a foldable stroller frame body includes a chassis 1 provided with a wheel set, and a handle tube 4; the chassis 1 includes a front leg tube 12 and a rear leg tube 13 , the front leg tube 12 is rotatably connected to the rear leg tube 13, and the rear end of the rear leg tube 13 is respectively provided with a rear fixing seat 11. Each of the rear fixing seats 11 is rotatably connected to the corresponding end of the handle tube 4; between the handle tube 4 and the corresponding rear fixing seat 11, there is a controllable handle tube 4 to pivot or rotate relative to the corresponding rear fixing seat 11. The fixed locking mechanism 6 also includes a corresponding release mechanism 7 for controlling the locking mechanism 6 . A linkage mechanism is provided between the handle tube and the front leg tube to allow the front leg tube to rotate and move closer to the rear leg tube when the handle tube rotates and draws closer to the rear leg tube; the chassis 1 is provided with a seat frame 100 . In this example, the front leg tube and the rear leg tube are U-shaped tubes.

The linkage mechanism includes a front folding tube 14, a rear folding tube 15, and a connecting rod 5. One end of the front folding tube 14 is hinged with the front leg tube 12, and the other end is hinged with one end of the rear folding tube 15. The middle part of the rear folding tube 15 It is hinged with the rear leg tube 13, the other end of the rear folding tube 15 is hinged with one end of the connecting rod 5, and the other end of the connecting rod 5 is hinged with the handle pipe 4. In this example, the number of interlocking mechanisms is two, and the collapsible tube 14, rear collapsible tube 15, and connecting rod 5 of each interlocking mechanism are respectively connected to the corresponding parts of the front leg tube 12, rear leg tube 13, and handle tube 4. hinged. The two linkage mechanisms are more conducive to the mutual balance of the actions of the front leg tube 12, the rear leg tube 13, and the handle tube 4 when folding.

In this example, the front leg tube 12 and the rear leg tube 13 are rotatably connected through the upper support base 22 , and the front leg tube 12 and the rear leg tube 13 are respectively rotatably connected to the upper support base 22 . The two rear folding pipes are connected together. The seat can be supported on the support seat, and the support seat is located in the middle of the whole vehicle frame, so the space for rotation is large.

The latching mechanism 6 includes a latching member 61, a latching portion 111 for a part of the latching member 61 to extend into, and an elastic member 62 to generate elastic force to the latching member 61 so that the latching member extends into the latching portion; The locking part 111 is arranged on the rear fixing seat 11 , and the locking part 61 and the handle tube 4 can be movably connected along the axial direction of the handle tube 4 , and the release mechanism 7 is connected to the locking part 61 . The locking part 61 is located in the handle tube 4, and its outer diameter matches the inner diameter of the handle tube, and the locking part 111 is a locking groove.

The release mechanism 7 is arranged on the handle tube. The release mechanism 7 includes a pull rod 72 and a stopper 73, the pull rod 72 is reciprocally movably sleeved on the handle tube 4 through the stopper 73, and the link 71 is connected between the pull rod 72 and the locking member 111. connect. The link 71 is a flexible wire.

The upper support base 22 is provided with an upper support frame 3 , and the upper support frame 3 is provided with the seat frame 100 . Both ends of the support frame 3 are provided with connecting seats 31 . In addition, the connection seat 31 can connect and support a baby carrier or car safety seat.

As shown in Figure 7, when folding, after the seat is removed, the release mechanism 7 provided on the handle tube 4 is used to control the catch mechanism 6, and the catch member 61 of the catch mechanism 6 can be driven to disengage through the linkage The slot (locking part 111) of the rear fixing seat 11 enables the handle pipe 4 and the rear fixing seat 11 to pivot relatively, thereby driving the interlocking mechanism to pivot mutually and fold toward the other side, that is, the connecting rod drives The rear folded tube rotates, and the rear folded tube drives the front folded tube to rotate, and the front folded tube drives the front leg tube to rotate, so that the handle tube and the front leg tube are moved closer to the rear leg tube. On the contrary, when the frame body is to be unfolded, the handle can be turned to the opposite direction to get final product. When the car is not received, the locking member 61 is inserted into the draw-in groove of the rear mount 11 under the action of the elastic member 62, so that the handle pipe 4 and the rear mount 11 cannot rotate relative to each other, so that the vehicle frame cannot be folded.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (9)

1. a Foldable baby vehicle frame, is characterized in that: comprise the underframe being provided with wheels, and handle pipe; Described underframe comprises front foot pipe, rear foot tube, and front foot pipe and rear foot tube are rotatably connected, and the rear end of rear foot tube is provided with rear permanent seat; The respective end of described rear permanent seat and handle pipe is rotatably connected; Between handle pipe and corresponding rear permanent seat, be provided with and can control the relatively corresponding rear permanent seat pivotable of handle pipe or fixing braking structure, also comprise the corresponding releasing mechanism controlling this braking structure; Be provided with handle pipe between handle pipe and front foot pipe to rotate to rear foot tube, when drawing close, the interlinked mechanism that front foot pipe is rotated to rear foot tube simultaneously, drawn close can be made; Underframe is provided with cushion frame, described interlinked mechanism comprises front folding pipe, rear folding pipe, pipe link, front folding pipe one end and front foot pipe hinged, the other end and rear folding pipe one end hinged, middle part and the rear foot tube of rear folding pipe are hinged, the other end of rear folding pipe and one end of pipe link hinged, the other end and the handle pipe of pipe link are hinged.

2. Foldable baby vehicle frame according to claim 1, is characterized in that: realize being rotatably connected by upper support seat between front foot pipe and rear foot tube, front foot pipe, rear foot tube are rotatably connected with upper support seat respectively.

3. Foldable baby vehicle frame according to claim 1, is characterized in that: the blocking part that described braking structure comprises holding piece, puts in for a part for holding piece, and the elastic component producing the blocking part that elastic force makes holding piece put in holding piece; Described blocking part is located at rear permanent seat, and can be connected along handle pipe is axially movable between holding piece with handle pipe, described releasing mechanism is connected with holding piece.

4. Foldable baby vehicle frame according to claim 3, it is characterized in that: described holding piece is positioned at handle pipe, its external diameter mates with handle pipe internal diameter, and blocking part is a draw-in groove.

5. Foldable baby vehicle frame according to claim 3, is characterized in that: described releasing mechanism comprises pull bar and locating part, this pull bar is reciprocally socketed in this handle pipe movably by this locating part, is connected between this pull bar with holding piece by moving part.

6. Foldable baby vehicle frame according to claim 5, is characterized in that: described moving part is a flexible wire.

7. Foldable baby vehicle frame according to claim 1, is characterized in that: described releasing mechanism is arranged in handle pipe.

8. Foldable baby vehicle frame according to claim 2, it is characterized in that: described upper support seat is provided with upper support frame, upper support frame establishes described cushion frame.

9. Foldable baby vehicle frame according to claim 1, is characterized in that: front foot pipe, rear foot tube are U-shaped pipe.