CN201183507Y - Front wheel connection mechanism of baby carriage - Google Patents

Abstract

A front wheel connecting mechanism of a baby carriage comprises a first front wheel, a second front wheel and a front wheel connecting rod, wherein, the first front wheel and the second front wheel are positioned below the front parts of the right side and the left side of the frame of a trolley; the front wheel connecting rod is positioned below the front part of the frame of the trolley; the first front wheel and the second front wheel are respectively rotationally connected with both ends of the front wheel connecting rod; the approximate middle of the front wheel connecting rod is rotationally connected with the bottom front part of the frame of the trolley through a pin. The front wheel connecting mechanism has simple structure, larger steering angle in the process of the steering of front wheels, therefore, the use flexibility of the baby carriage is improved, and the operation is simple.

Description

Front wheel connection mechanism of baby carriage

technical field

The utility model relates to a baby carriage, in particular to a front wheel connection mechanism of the baby carriage.

Background technique

In the prior art, the two front wheels of the stroller are rotatably connected to the two front wheel brackets of the stroller frame, although the two front wheels can rotate 360 degrees around their respective rotation axes, but due to the existence of two pivots , when the front wheel is universal, the turning angle of the stroller is small, and two positioning mechanisms are required to be respectively installed on the two front wheels when the front wheel is oriented, so the operation is more troublesome when switching between the front wheel directional and the front wheel universal. And it is also inconvenient for workers to install.

Contents of the invention

The technical problem to be solved by the utility model is to provide a front wheel connection mechanism of a baby carriage with simple structure and easy operation, and the turning angle of the front wheel is relatively large when the front wheel is universal.

The technical scheme of the utility model is: a front wheel connecting mechanism of a stroller, which includes a first front wheel and a second front wheel located on the left and right sides of the cart frame, and the front wheel connecting mechanism of the stroller also includes a The front wheel link at the front and lower part of the stroller frame, the first front wheel and the second front wheel are respectively rotatably connected to the two ends of the front wheel link, the The approximate middle part of the front wheel link is rotatably arranged with the bottom front part of the cart frame through a pin.

The front wheel connection mechanism of the stroller also includes a positioning mechanism for fixing the relative position of the two, which is arranged between the bottom front part of the cart frame and the front wheel link, as long as it can be locked between the two. Relative position positioning mechanisms can be used.

The positioning mechanism includes a locking pin arranged on one of the two parts of the front wheel link and the bottom front part of the cart frame, and a locking groove arranged on the other of the two parts. One of the two parts of the lock pin and the lock groove is movably arranged on the front wheel link or the bottom front part of the cart frame is movably arranged Above, the lock pin has a first position and a second position, when the lock pin is in the first position, the lock pin is inserted into the lock slot, when the lock pin is in the second position In the second position, the lock pin is disengaged from the lock slot.

The front wheel connection mechanism of the stroller also includes a control mechanism for controlling the conversion of the lock pin between the first position and the second position, as long as the control mechanism that can control the conversion of the lock pin between the second position and the first position can be used.

The control mechanism includes a second slide block slidably arranged at the bottom front part of the cart frame along the front and rear direction of the cart frame, for controlling the sliding of the second slide block The operating member, the first elastic member arranged between the second slider and the bottom front part of the cart frame, the lock pin is arranged on the second slider, the The lock groove part is fixedly arranged on the front wheel connecting rod.

The lock pin is slidably arranged on the second slide block along the front and rear direction of the cart frame, and a device is arranged between the lock pin and the cart frame so that the The locking pin is a second elastic member that closely fits the second slider.

The control mechanism also includes a first slider that is slidably arranged at the bottom front of the cart frame along the left-right direction of the cart frame, and the first slider is connected to the cart frame. Cooperate with the second sliding block, and the operating member is connected with the first sliding block.

The first sliding block cooperates with the second sliding block through a wedge-shaped surface.

The operating part is movably arranged on the bottom rear part of the trolley frame, and the operating part is connected with the first sliding block through a traction cable.

The cart frame includes an underframe, and the underframe includes a crossbar at the front, a first rear wheel frame and a second rear wheel formed by extending backwards from both ends of the crossbar respectively. frame, the crossbar is the bottom front part of the cart frame, and the operating member is rotatably arranged on the rear end of the first rear wheel frame or the second rear wheel The rear end of the frame, the traction cable is passed through the lumen of the underframe.

An operating member positioning mechanism is provided between the operating member and the rear end of the first rear wheel frame or the rear end of the second rear wheel frame.

The cart frame includes an underframe, and the underframe includes a crossbar at the front, a first rear wheel frame and a second rear wheel formed by extending backwards from both ends of the crossbar respectively. frame, and the cross bar is the bottom front part of the cart frame.

The front wheel link includes a front wheel connecting shaft, a connecting part fixed on the approximate middle of the front wheel connecting shaft, and the other side part of the connecting part is connected to the cart frame. The bottom front part of the bottom is rotatably connected by the pin, and the first front wheel and the second front wheel are rotatably connected to the two ends of the front wheel connecting shaft respectively, and the front wheel The axis line of the connecting shaft is vertical to the axis line of the pin.

Due to the application of the above technical solutions, the utility model has the following advantages compared with the prior art: the utility model has a simple structure, a large steering angle when the front wheels are universal, improves the flexibility of the baby carriage, and is easy to operate.

Description of drawings

Accompanying drawing 1 is the three-dimensional structure schematic diagram of the present utility model, wherein the first front wheel and the first rear wheel on the left side of the cart frame are removed;

Accompanying drawing 2 is the front view when the front wheel of the present utility model is in universal direction (lock pin is in the second position);

Accompanying drawing 3 is the front view when the front wheel of the present utility model is in orientation (lock pin is in the first position);

Accompanying drawing 4 is the sectional view of the M-M direction of accompanying drawing 2 (lock pin faces lock groove);

Accompanying drawing 5 is the sectional view of the N-N direction of accompanying drawing 3;

Accompanying drawing 6 is the sectional view of the M-M direction of accompanying drawing 2 (the front wheel connecting rod rotates an angle relative to the bottom of the trolley frame, and the lock pin deviates from the lock groove);

Accompanying drawing 7 is the enlarged view of place A of accompanying drawing 2;

Accompanying drawing 8 is the enlarged view of place B of accompanying drawing 3;

Accompanying drawing 9 is the enlarged view of C place of accompanying drawing 4;

Accompanying drawing 10 is the enlarged view of D place of accompanying drawing 5;

Accompanying drawing 11 is the enlarged view of E place of accompanying drawing 6.

Among them: 1. Cart frame; 2. First front wheel; 3. Second front wheel; 4. First rear wheel; 5. Second rear wheel; 6. Push rod; 7. Underframe; 8. Front Wheel connecting shaft; 9, cross bar; 10, pin; 11, first rear wheel frame; 12, first slider; 13, second slider; 14, operating part; 15, traction rope; 16, lock pin; 17. Lock groove; 18. Second rear wheel frame; 19. Connecting part; 20. First elastic member; 21. Second elastic member; 22. Front wheel link.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Referring to Fig. 1 to Fig. 6, the stroller includes a cart frame 1, a first front wheel 2 and a second front wheel 3 arranged at the bottom front of both sides of the cart frame 1, The first rear wheel 4 and the second rear wheel 5 at the bottom rear portion of both sides of the cart frame 1. And the position of the front wheel is before, the position of the rear wheel is after, the position of the first front wheel 2 and the first rear wheel 4 is left, the second front wheel 3 and the The position of the second rear wheel 5 described above is right.

As shown in accompanying drawing 1-accompanying drawing 6, a kind of front wheel connecting mechanism of stroller, it comprises the front wheel link 22 that is positioned at the front bottom of described stroller frame 1, described first front wheel 2 and described The second front wheel 3 described above is rotatably connected to the two ends of the front wheel link 22 respectively, and the approximate middle part of the front wheel link 22 is connected to the bottom front part of the cart frame 1. The pin 10 is provided in a rotatable manner.

The cart frame 1 includes an underframe 7 and a push rod 6. The underframe 7 includes a cross bar 9 located at the front, and a second cross bar 9 formed by extending backwards from both ends of the cross bar 9. A rear wheel frame 11 and a second rear wheel frame 18, the cross bar 9 is the bottom front portion of the cart frame 1, and the rear end of the first rear wheel frame 11 is provided with a first The rear wheel 4, the rear end of the second rear wheel frame 18 is provided with a second rear wheel 5.

The front wheel link 22 includes a front wheel connecting shaft 8, a connecting portion 19 that is fixed at the approximate middle of the front wheel connecting shaft 8 on one side, and the other side of the connecting portion 19 is connected to the The bottom front part of the stroller frame 1 is rotatably connected by the pin 10, and the first front wheel 2 and the second front wheel 3 are rotatably connected to the front wheel connection respectively. At both ends of the shaft 8, the axis of the front wheel connecting shaft 8 is vertical to the axis of the pin 10 in space.

As shown in accompanying drawings 7 to 11 , the front wheel connection mechanism of the stroller also includes a positioning mechanism arranged between the bottom front part of the stroller frame 1 and the front wheel link 22 .

The positioning mechanism includes a lock pin 16 movably arranged on the bottom front portion of the cart frame 1, a lock groove part with a lock groove 17 fixedly arranged on the front wheel link 22, and the lock groove part That is, it is integrated with one side of the connecting portion 19, and the locking pin 16 has a first position and a second position. When the locking pin 16 is in the first position, the locking pin 16 is inserted into the In the lock groove 17, when the lock pin 16 is in the second position, the lock pin 16 is disengaged from the lock groove 17.

It also includes a control mechanism for controlling the transition of the lock pin 16 between the first position and the second position.

The control mechanism includes a second slide block 13 which is slidably arranged at the bottom front part of the cart frame 1 along the front and rear direction of the cart frame 1, The left-right direction of the frame 1 is slidably arranged on the first slide block 12 at the bottom front part of the cart frame 1, the operating member 14 connected with the first slide block 12 by the traction cable 15, and is arranged on the The first elastic member 20 between the second slider 13 and the bottom front part of the cart frame 1, the first elastic member 20 is used to reset the second slider 13, when pressed The operating member 14 makes the second slider 13 slide backward against the elastic force of the first elastic member 20, so that the locking pin 16 can be inserted into the locking groove 17, and when the operating member 14 is released, the Under the force of the first elastic member 20, the second sliding block 13 slides forward and resets. The operating member 14 is rotatably arranged on the rear end of the first rear wheel frame 11 , and the traction cable 15 is passed through the lumen of the chassis 7 . A small hole is opened on the cross bar 9 for the traction cable 15 to pass through, and the traction cable 15 is connected to the first sliding block 12 after passing through the small hole.

The lock pin 16 is slidably arranged on the second slide block 13 along the front and rear direction of the cart frame 1 , and between the lock pin 16 and the cart frame 1 A second elastic member 21 is provided so that the lock pin 16 and the second sliding block 13 are closely matched.

The first sliding block 12 cooperates with the second sliding block 13 through a wedge-shaped surface.

An operating member positioning mechanism is provided between the operating member 14 and the rear end of the first rear wheel frame 11 . The operating member positioning mechanism is used to lock the position of the operating member 14, and when the operating member 14 is pressed, the operating member 14 is locked at this position by the operating member positioning mechanism. As shown in accompanying drawings 2 and 3, the operating member 14 is provided with two perpendicular first planes and second planes. When the operating member 14 is in the released state, the first plane is against the first rear On the rear end of the wheel bracket 11 , when the operating member 14 is in a pressed state, the second plane abuts against the rear end of the first rear wheel bracket 11 .

When it is necessary to use the baby carriage to move forward in a straight line, that is, the front wheels are oriented, the implementer only needs to step on the operating part 14 with his feet very conveniently, and the traction cable 15 connected with the operating part 14 pulls the first slide block 12 along the left direction Sliding, the first slider 12 squeezes the second slider 13 through the wedge surface to slide backwards, thereby allowing the lock pin 16 to slide backwards. At this time, there are the following two situations:

1. If the lock pin 16 is directly facing the lock groove 17 at this time, that is, under the action of the second elastic member 21, the lock pin 16 is inserted into the lock groove 17 to realize front wheel positioning;

2. If the lock pin 16 is not facing the lock groove 17 at this time, that is, the lock pin 16 is against the connecting portion 19 at this time, the front wheel link 22 needs to be rotated around the pin 10 by an angle. During the process, when the lock pin 16 faces the lock groove 17, the lock pin 16 is inserted into the lock groove 17 under the action of the second elastic member 21, so as to realize the alignment of the front wheel.

When the stroller needs to turn, that is, the front wheel is universal, the pusher only needs to reset the operating member 14, and the first slider 12 and the second slider 13 are reset under the action of the first elastic member 20 , driven by the second slider 13, the lock pin 16 is reset or moved forward, and the lock pin 16 is disengaged from the lock groove 17 to realize the universal direction of the front wheel. The front wheel of the baby carriage can be switched between directional and universal directions only through one operating mechanism, and the operation is convenient, and the operating part is located at the rear of the baby carriage, which is convenient for the pusher's feet to step on, and is more humanized.

Claims (13)

1. A front wheel connection mechanism for a stroller, which includes a first front wheel (2) and a second front wheel (3) located on the left and right sides of the stroller frame (1), and the second front wheel (3). It includes a front wheel link (22) located at the front bottom of the cart frame (1), and the first front wheel (2) and the second front wheel (3) are rotatably connected to the The two ends of the front wheel link (22), the roughly middle part of the front wheel link (22) and the bottom front part of the cart frame (1) are rotated through the pin (10) ground setting. 2. The front wheel connection mechanism of baby stroller according to claim 1, characterized in that it also includes a connecting rod (22) arranged at the bottom front part of the stroller frame (1) and the front wheel link (22). positioning mechanism between. 3. The front wheel connection mechanism of baby stroller according to claim 2, characterized in that: said positioning mechanism comprises a set of said front wheel linkage (22) and said stroller frame (1) The lock pin (16) on one of the two parts at the bottom front part, the lock groove part with the lock groove (17) on the other two parts, the lock pin (16), the lock One of the two parts of the groove is movably arranged on the said front wheel link (22) or movably arranged on the bottom front part of the described trolley frame (1), and the described lock pin (16 ) has a first position and a second position, when the lock pin (16) is in the first position, the lock pin (16) is inserted in the lock slot (17), when the lock When the pin (16) is in the second position, the lock pin (16) is disengaged from the lock groove (17). 4. The front wheel connection mechanism of a stroller according to claim 3, characterized in that it further comprises a control mechanism for controlling the switching of the lock pin (16) between the first position and the second position. 5. The front wheel connection mechanism of baby stroller according to claim 4, characterized in that: said control mechanism includes a front wheel slidingly arranged on said stroller along the front and rear direction of said stroller frame (1). The second slide block (13) at the bottom front part of the vehicle frame (1), the operating member (14) used to control the sliding of the second slide block (13), is arranged on the second slide block (13) ) and the first elastic member (20) between the bottom front part of the cart frame (1), the lock pin (16) is arranged on the second slider (13), the The lock groove part is fixedly arranged on the front wheel connecting rod (22). 6. The front wheel connection mechanism of baby stroller according to claim 5, characterized in that: said lock pin (16) is slidably arranged on said stroller frame (1) along the front-to-back direction. On the second slide block (13), be provided with so that described lock pin (16) and described second slide block ( 13) The second elastic member (21) closely fitted. 7. The front wheel connection mechanism of baby stroller according to claim 5, characterized in that: said control mechanism also includes a sliding wheel provided on said pushchair along the left and right direction of said pushcart frame (1). The first slider (12) at the bottom front of the vehicle frame (1), the first slider (12) is matched with the second slider (13), and the operating part (14 ) is connected with the first slider (12). 8. The connection mechanism for the front wheel of a stroller according to claim 7, characterized in that: the first slider (12) and the second slider (13) cooperate through a wedge-shaped surface. 9. The front wheel connection mechanism of baby stroller according to claim 7, characterized in that: the operating member (14) is movably arranged on the bottom rear part of the stroller frame (1), and the operation The part (14) is connected with the first sliding block (12) through a traction cable (15). 10. The front wheel connection mechanism of baby stroller according to claim 9, characterized in that: said stroller frame (1) includes a bottom frame (7), and said bottom frame (7) includes a Cross bar (9), the first rear wheel frame (11) and the second rear wheel frame (18) formed by extending backward respectively with the two ends of described cross bar (9), described cross bar (9) ) is the bottom front part of the cart frame (1), and the operating member (14) is rotatably arranged at the rear end of the first rear wheel frame (11) or the second The rear ends of the two rear wheel frames (18), the traction cables (15) are passed through the tube chambers of the underframe (7). 11. The front wheel connection mechanism of baby carriage according to claim 9, characterized in that: said operating member (14) is connected to the rear end of said first rear wheel frame (11) or to said second wheel frame. An operating part positioning mechanism is arranged between the rear ends of the two rear wheel frames (12). 12. The front wheel connection mechanism of baby stroller according to claim 1, characterized in that: said stroller frame (1) includes a bottom frame (7), and said bottom frame (7) includes a Cross bar (9), the first rear wheel frame (11) and the second rear wheel frame (18) formed by extending backward respectively with the two ends of described cross bar (9), described cross bar (9) ) is the bottom front portion of the cart frame (1). 13. The front wheel connecting mechanism of baby carriage according to claim 1, characterized in that: said front wheel connecting rod (22) comprises a front wheel connecting shaft (8), one side of which is fixed on said front wheel connecting The connection part (19) of the approximate middle part of the shaft (8), the other side part of the connection part (19) and the bottom front part of the cart frame (1) pass through the pin (10) Rotately connected, the first front wheel (2) and the second front wheel (3) are respectively rotatably connected to the two ends of the front wheel connecting shaft (8), the front wheel The axis line of the connecting shaft (8) is vertical to the axis line of the pin (10).

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