CN201037006Y - Hand push frame folding structure of baby carriage - Google Patents

Abstract

The utility model discloses a hand push frame folding structure of perambulator, its pin joint seat between push up frame and the lower carriage including setting up, its characterized in that, pin joint seat including fix last pin joint portion of pushing up the frame lower extreme and fix the lower pin joint portion of pushing up the frame upper end under, it still includes: the upper pin joint part is provided with a shaft, a pulling wheel and a gear which can axially move on the shaft are sleeved on the shaft, the pulling wheel is also connected with a pulling wire which can drive the pulling wheel to rotate, the inner periphery of a first inner cavity on the upper pin joint seat is provided with an inclined step and a first inner gear ring which can be used for clamping the gear, and the outer wall of the pulling wheel is provided with a pushing surface which is matched with the inclined step; the lower pivoting part is provided with a second inner gear ring for clamping the gear; an elastic piece is arranged between the lower pivoting part and the gear. The utility model is not only simple in structure, convenient in assembly, but also simple, convenient and smooth in folding.

Description

Folding structure of a trolley frame for a baby carriage

【Technical field】

The utility model relates to a folding structure of a push frame of a baby carriage.

【Background technique】

Generally, a stroller for carrying a baby is usually connected by rods that are pivotally connected to each other. A release mechanism is provided on the baby carriage, and a joint group arranged between the rods is controlled by the release mechanism, and the lock in the joint group The mechanism releases and locks, thereby controlling the baby stroller to be unfolded for the baby to ride on, and folded to facilitate people's storage or transportation. Most of the trolleys of existing baby carriages are combined with connecting rods. This structure is quite complicated, not only difficult to assemble and the procedures are also very cumbersome, and because there are quite a lot of rods, it causes the overall The relative increase in the weight of the frame makes it cumbersome for the user to move, and the linkage effect during folding is not good, and it is easy to cause the problem of unsmooth folding.

【Content of invention】

The purpose of the utility model is to overcome the deficiencies of the current technology, and provide a folding structure of the hand push frame of the baby carriage which is simple in structure, convenient in assembly, convenient and smooth in folding.

The purpose of this utility model is achieved in that:

A folding structure of a trolley frame for a stroller, which includes a pivot seat arranged between an upper push frame and a lower push frame, characterized in that the pivot seat includes an upper The pivot joint and the lower pivot joint fixed on the upper end of the lower push frame also include:

The upper pivot joint is provided with a shaft, and a pull wheel and a gear that can move axially on the shaft are sleeved on the shaft, and a pull wire that can drive it to rotate is connected to the pull wheel. The inner circumference of the first inner chamber is provided with an inclined step and the first inner ring gear for gear engagement, and the outer wall of the pull wheel is provided with a push surface matched with the inclined step;

The lower pivot joint is provided with a second inner ring gear for gear locking;

An elastic member is provided between the lower pivot joint and the gear.

The folding structure of the push frame of a baby stroller as described above is characterized in that the teeth on the gear are distributed asymmetrically and are adapted to the first toothed inner ring gear, and the gear is connected to the first inner ring gear. There is only one insertable position.

The above-mentioned folding structure of the push frame of the baby carriage is characterized in that the upper pivot joint is provided with an upper connection portion connected with the upper push frame.

The above-mentioned folding structure of the push frame of the stroller is characterized in that the lower pivot joint is provided with a lower connecting portion connected to the lower push frame.

The folding structure of the trolley frame of the stroller as described above is characterized in that the elastic member is a spring.

The folding structure of the push frame of the baby stroller as described above is characterized in that the side where the upper pivotal joint and the lower pivotal joint are in contact is provided with a first limit block on the upper pivotal joint , a second limiting block that can engage with the first limiting block is provided on the lower pivot joint.

The folding structure of the push frame of the stroller as above is characterized in that the lower pivot joint is further provided with passive wheels.

The folding structure of the push frame of a stroller as described above is characterized in that a symmetrical push block is provided on the shaft; a bushing that can be inserted into the shaft is provided in the center of the driven wheel, and the shaft The sleeve is provided with a symmetrically arranged locking block which matches with the push block.

The folding structure of the push frame of the stroller as described above is characterized in that a second pull wire is connected to the driven wheel.

The hand push frame of the baby stroller of the utility model is made of the upper push frame and the lower push frame by using a pivot seat to pivot them into a joint, and the pivot joint can be fixed into a straight pipe or a pivoted bent joint. The pivot seat includes The upper pivotal joint fixed at the lower end of the push-up frame and the lower pivotal joint fixed at the upper end of the lower push-frame have locking parts in the gear grooves on the inner wall of the upper pivotal joint and the lower pivotal joint, and the locking parts are controlled by The locking part and the upper pivot joint control the folding of the push frame. Not only is the structure simple, the assembly is convenient, but the folding is simple and smooth.

【Description of drawings】

Fig. 1 is a side view of the utility model baby carriage;

Fig. 2 is a perspective view of the utility model;

Fig. 3 is one of structural explosion diagrams of the present utility model (spring is omitted);

Fig. 4 is a structural schematic diagram of the upper pivot joint and the upper rotating wheel of the present invention;

Fig. 5 is the second structure exploded view of the utility model;

Fig. 6 is the third exploded view of the structure of the utility model (spring is omitted).

Description of figure number

Push rack 2 Push rack 21

Push down frame 22 Pivot seat 3

Upper pivot joint 4 Lower pivot joint 6

Upper connection part 41 first inner chamber 51

Shaft 58 Pulling wheel 53

Gear 8 Pull wire 54

Inclined step 55 First ring gear 56

Push surface 57 lower connecting part 61

Second inner chamber 62 Second inner ring gear 74

Elastic part 100 Push block 59

Passive wheel 71 The second guy wire 9

Shaft sleeve 72 Block 73

The first limit block 42 The second limit block 62

【Detailed ways】

As shown in FIG. 1 , a folding structure of a trolley frame of a stroller is applied to a trolley frame 2 of a baby stroller, and includes a pivot seat arranged between an upper push frame 21 and a lower push frame 22 3. The pivotal seat 3 can pivotally connect the upper push frame 21 and the lower push frame 22 into a joint that can be fixed into a straight pipe or pivoted and bent. The pivotal seat 3 includes an upper pivot fixed at the lower end of the upper push frame 21 Connecting portion 4 and lower pivoting portion 6 fixed on the upper end of push frame 22 .

As shown in Figures 3, 4, and 5, the upper pivot joint 4 is provided with an upper connecting portion 41 connected to the upper push frame 21. For the convenience of being connected with the push frame 21 of the baby carriage, the upper connecting portion 41 can be a Tubular structure, the upper pivotal part 4 is provided with a first inner chamber 51, and a shaft 58 is also provided in the center of the first inner chamber 51, wherein the shaft 58 is integrally formed with the upper pivotal part 4, and is sleeved on the shaft 58 Pulling wheel 53 and gear 8 that can axially move on shaft 58 are arranged, and pulling wheel 53 is connected with the backguy 54 that can drive its rotation, and in the present embodiment, backguy 54 is wound on the pulling wheel 53, and backguy can be a metal wire. The inner circumference of the first inner chamber 51 is provided with an inclined step 55 and a first ring gear 56 for engaging the gear 8 , and the outer wall of the pulling wheel 53 is provided with a push surface 57 matching with the inclined step 55 . The lower pivot joint 6 is provided with a lower connecting portion 61 connected with the lower push frame, and a second inner chamber 62 is arranged on the lower pivot joint 6, and the inner circumference of the second inner chamber 62 is provided with the first inner tooth. The ring 56 is the same as the second ring gear 74, the gear 8 is stuck in the first ring gear 56 and the second ring gear 74, the teeth on the gear 8 are asymmetrically distributed, and the teeth between the teeth The distances are not equal, the sizes of the teeth are not equal, and the gear 8 and the first ring gear 56 and the second ring gear 74 have only one insertable position. When the pulling wheel 53 is pulled and rotated by the pull wire 54, since the push surface 57 on the outer wall of the pulling wheel 53 is pushed against the inclined step 55 on the inner wall of the upper pivot seat 5, the pulling wheel 53 is rotated away from the upper pivot. The connecting portion 4 moves, thereby pushing the gear 8 away from the first ring gear 56 and fully inserted into the second ring gear 74 .

An elastic member 100, in the present utility model, the elastic member 100 is a spring, which is arranged between the lower pivot joint 6 and the gear 8, and its function is to drive the gear 8 to reset.

On the side where the upper pivotal joint 4 and the lower pivotal joint 6 are in contact, a first stopper 42 is provided on the upper pivotal joint 4 , and a first stopper 42 is provided on the lower pivotal joint 6 that can engage with the first stopper 42 . The second limit block 62 of the upper push frame 21 can be used to limit the rotation of the upper push frame 21 when the push frame 21 is rotated and folded, so as to achieve the position limit function. In this way, the gear 8 can be more easily entered into the first inner cavity of the upper pivot joint 4 51, the push-down frame 22 and the push-up frame 21 are fixed in the expanded position.

The working principle of the utility model is: a control mechanism can be provided at the handle position of the push frame 2, and the control mechanism can pull the backguy 54 connected to the pull wheel 53, thereby driving the pull wheel 53 to rotate, so that the pull wheel 53 rotates while The lower pivot joint 6 moves, and the gear 8 is disengaged from the engagement of the first ring gear 56, and is fully inserted into the second ring gear 74 of the lower pivot joint 6, so that the upper push frame 21 will not be affected by the gear. 8, so that the upper push frame 21 can be rotated to realize the folding of the push frame 2. When the hand push frame will be launched, the operation control mechanism unclamps the stay wire 54, and rotates the upper push frame 21, and when turning to make the upper push frame and the lower push frame on the same straight line, the gear 8 resets under the action of the spring, and makes The gear 8 is snapped into the first ring gear 56 again. At this time, one end of the gear 8 is snapped into the first ring gear 56, and the other end is snapped into the second ring gear 74, so that the upper pivot joint 4 and the lower pivot joint 6 can no longer rotate, because the teeth on the gear 8 are asymmetrically distributed, the gear 8 and the first ring gear 56 have only one insertable position, so that after the gear 8 breaks away from the engagement of the first ring gear 56, it can only return to A specific position will make the gear 8 reinsert in the first ring gear 56, and the lower push frame 22 and the upper push frame 21 will be fixed in the unfolded position.

In the utility model, in order to further fold the baby carriage after folding the push frame of the baby carriage, a symmetrically arranged push block 59 is also provided on the shaft 58, and a driven wheel 71 is also provided in the lower pivot joint 6, and a driven wheel 71 is arranged on the driven wheel The second pull wire 9 is also connected to the 71 . In the center of the passive wheel 71, there is a shaft sleeve 72 that can be inserted into the shaft 58. A symmetrically arranged block 73 that is matched with the push block 59 is provided in the shaft sleeve 72. When the shaft 58 rotates to a certain angle, the push block can be pushed. 59 engages with the block 73 to drive the driven wheel to rotate.

After the push-up frame 21 rotates and folds to a certain angle, when the push-up frame 21 rotates again, since the second backguy 9 is also connected to the driven wheel 71, the second backguy 9 can be pulled, and the second backguy 9 can be pulled. Therefore, other joints on the stroller can be controlled to be further folded, so as to facilitate people's storage or transportation.

Claims (9)

1. the hand push frame folding structure of a perambulator, it comprise be arranged on push away frame (21) and push away down pivot connecting seat (3) between the frame (22), it is characterized in that, described pivot connecting seat (3) comprises and is fixed on the last articulated section (4) that pushes away frame (21) lower end and is fixed on down the following articulated section (6) that pushes away frame (22) upper end that it also comprises:

The described articulated section (4) of going up is provided with axle (58), being socketed with on axle (58) can be at axle 58) go up axially movable pulling wheel (53) and gear (8), on pulling wheel (53), also be connected with the backguy (54) that can drive its rotation, being provided with tilt stage (55) interior week and can supplying first internally toothed annulus (56) of gear (8) clip of first inner chamber (51) on the last pivot connecting seat (5) is provided with the face of pulling (57) that pushes away that matches with tilt stage (55) at the outer wall of pulling wheel (53);

Described articulated section (6) down is provided with second internally toothed annulus (74) that can supply gear (8) clip;

Be provided with elastic component (100) between described articulated section (6) down and the gear (8).

2. the hand push frame folding structure of a kind of perambulator according to claim 1, it is characterized in that, tooth on the described gear (8) is a distribution or asymmetrical distribution, and adapts with the first tooth internally toothed annulus (56), and gear (8) has only an insertable position with first internally toothed annulus (56).

3. the hand push frame folding structure of a kind of perambulator according to claim 1 and 2 is characterized in that, described go up articulated section (4) be provided with on push away connecting portion (41) on frame (21) bonded assembly.

4. the hand push frame folding structure of a kind of perambulator according to claim 1 and 2 is characterized in that, following articulated section (6) be provided with under push away connecting portion (61) under frame (22) bonded assembly.

5. the hand push frame folding structure of a kind of perambulator according to claim 1 and 2 is characterized in that, described elastic component (100) is a spring.

6. the hand push frame folding structure of a kind of perambulator according to claim 1 and 2, it is characterized in that, describedly go up articulated section (4) and the contacted side in following articulated section (6) is provided with first limiting stopper (42) on last articulated section (4), descend articulated section (6) be provided with can with first limiting stopper (42), second limiting stopper (62) of clip mutually.

7. the hand push frame folding structure of a kind of perambulator according to claim 1 is characterized in that, also is provided with follower (71) in the described following articulated section (6).

8. the hand push frame folding structure of a kind of perambulator according to claim 7 is characterized in that, described axle (58) is provided with a symmetrically arranged pushing block (59); The central authorities of described follower (71) are provided with the axle sleeve (72) that can insert axle (58), are provided with the fixture block 73 that a symmetry is provided with and matches with pushing block (59) in the axle sleeve (72)).

9. according to the hand push frame folding structure of claim 7 or 8 described a kind of perambulators, it is characterized in that, also be connected with second backguy (9) on the described follower (71).

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