CN205292749U - Child stroller - Google Patents

Abstract

(B, ) the utility model relates to a (B, ) (b) child stroller. Child stroller includes seat pole subassembly, seat extension rod and attached locking device. Seat pole subassembly is installed between front wheel support and bracing piece, and seat extension rod and seat pole subassembly rotate to be connected, attached locking device be used for with seat pole subassembly and the locking of seat extension rod at frame development condition, the seat extension rod is installed at seat pole subassembly front end, when the frame was in development condition, the seat extension rod propped immediately along the extending direction of seat pole subassembly, attach locking device and lock seat pole subassembly and seat extension rod each other, be in fold condition when the frame, attached locking device unblock, the seat extension rod rotates to draw close with seat pole subassembly and folds up. The seat pole subassembly and the whole seat of the seat extension rod constitution pole that adopt the rotation connection make the seat pole can form inflexible seat pole when the frame expandes, and it folds up to draw close each other again when folding makes the further reduction occupation space of frame after folding together. (B, )

Description

stroller

technical field

The utility model relates to a stroller for children.

Background technique

At present, for the convenience of storage and transportation, children's strollers are often designed in a foldable style. The different folding methods and structures of the strollers make the space occupied by the folded strollers and the degree of compactness of the folded strollers different. Most of the existing children's strollers are partially folded, and the space occupied after folding is relatively large. Most of the seat bars of the stroller are one-piece rigid structure. When the stroller is folded, it can only move closer to the folding direction of the frame. Due to the limitation of its own volume, it cannot further reduce the occupied space so that the entire stroller takes up space after being folded. The reduction is limited.

Utility model content

The technical problem to be solved by the utility model is to provide a children's stroller which takes up little space after being folded.

In order to solve the above-mentioned technical problems, a technical solution adopted by the utility model is: a children's stroller, including a frame with an unfolded state and a folded state, a front wheel arranged at the front under the frame, and a front wheel arranged at the bottom of the frame. Rear wheels. The vehicle frame includes a front wheel support with a lower part connected to the front wheel, a rear wheel support with a lower part connected to the rear wheel, a push rod, a support rod, a seat bar assembly, a seat extension bar, a vehicle frame locking device and an auxiliary locking device. The front wheel bracket is rotatably connected with the rear wheel bracket, the push rod is installed on the top of the front wheel bracket, the support rod is installed between the push rod and the rear wheel bracket, and the seat bar assembly is installed between the front wheel bracket and the rear wheel bracket. Between the support rods, the seat extension rod is rotatably connected with the seat rod assembly, and the auxiliary locking device is used to lock the seat rod assembly and the seat extension rod in the unfolded state of the vehicle frame, and the seat extension rod is installed on the seat rod assembly At the front end, when the vehicle frame is in the unfolded state, the vehicle frame locking device locks the vehicle frame, the seat extension rod stands along the extending direction of the seat rod assembly, and the auxiliary locking device connects the seat rod assembly and the seat extension rod Locking: when the frame is folded, the frame locking device is unlocked, and the front wheel bracket rotates relative to the seat post assembly to drive the auxiliary locking device to unlock, and the push rod, rear wheel bracket, front wheel bracket, seat extension rod Rotate and fold together with the seat post assembly.

Preferably, the front wheel bracket is fixed with a groove, and the seat post assembly is provided with a pin shaft, and when the vehicle frame is in the unfolded position, the pin shaft is located in the groove; when the vehicle frame is in the folded position When in position, the pin shaft moves out of the groove along the inner wall of the groove.

Preferably, the seat post assembly includes a seat post body and a seat post fixing part fixedly installed at the end of the seat post body, the seat extension bar is rotatably connected to the seat post fixing part, and the front wheel bracket is fixed to the seat post The parts are rotatably connected, and the support rod is rotatably connected with the seat post body.

Preferably, the auxiliary locking device includes a lock groove opened on the seat extension rod, a lock tongue slidably arranged on the seat rod assembly, and a compression spring arranged between the lock tongue and the seat rod assembly, when the vehicle frame is unfolded, The compression spring pushes the lock tongue into the lock groove to lock the seat rod assembly and the seat extension rod to each other; when the frame is folded, pull the lock tongue and the lock groove to disengage and unlock, and the seat extension rod rotates and folds closer to the seat rod assembly .

Further, the seat post body is a hollow pipe structure, the compression spring is installed in the seat post body, and the lock tongue is inserted into the seat post body from the end of the seat post body and abuts against the compression spring. When the vehicle frame is unfolded, the deadbolt passes through the seat rod fixing part and snaps into the lock groove of the seat extension rod; when the vehicle frame is folded, the dead bolt is pulled back into the seat rod body and released from the lock groove for unlocking.

Preferably, the locking groove is provided at the rear of the seat extension rod, and there are multiple locking grooves, and the multiple locking grooves are distributed on a circle centered on the rotation center of the seat extension rod around the seat rod fixing member.

Further, a waist-shaped hole is opened on the seat post body, and the baby stroller also includes an unlocking mechanism, the unlocking mechanism includes a pin shaft fixedly connected with the lock tongue, a sliding sleeve rotatably sleeved on the pin shaft and the connecting piece fixedly installed on the front wheel bracket, the pin shaft and the sliding sleeve protrude from the waist-shaped hole and are exposed outside the seat bar body, and the front wheel bracket is rotationally connected with the seat bar fixing piece through the connecting piece, There is a groove on the connecting piece, and the sliding sleeve is connected with the groove. When the frame is in the unfolded state, the pin shaft and the sliding sleeve extend into the groove, and the sliding sleeve is rollingly connected with the groove. ; When the frame is in the folded state, the pin shaft and the sliding sleeve are located outside the groove, and the sliding sleeve is against the connecting piece. When the frame is folded, the front wheel bracket rotates so that the connecting piece drives the sliding sleeve to roll in the groove Until the sliding sleeve leaves the groove, the connecting piece squeezes the sliding sleeve to drive the lock tongue to shrink into the seat rod body and separate from the lock groove to unlock the auxiliary locking device.

Specifically, the upper end of the front wheel bracket intersects with the upper end of the rear wheel bracket to form a first rotation joint, and the rotation connection between the seat post assembly and the front wheel bracket is lower than the first rotation joint.

Specifically, the push rod includes an upper push rod and a lower push rod rotatably connected with the upper push rod, the lower part of the lower push rod is rotatably connected at the first rotation joint, and the upper part of the lower push rod is connected with the upper push rod The upper part of the support rod is rotatably connected with the lower part of the upper push rod, and the lower part of the support rod is rotatably connected with the rear wheel bracket by intersecting to form a second rotating joint.

Further, when the vehicle frame is in the unfolded state, the rotation connection between the support rod and the upper push rod is lower than the second rotating joint, and the connection between the support rod and the rear wheel bracket is lower than the support rod and the seat rod assembly of the connection.

The orientation words such as front, rear, left, right, up, and down mentioned above are defined in the normal use orientation of the stroller.

The scope of the present utility model is not limited to technical solutions formed by a specific combination of the above technical features, but also covers other technical solutions formed by any combination of the above technical features or equivalent features. For example, a technical solution formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.

Due to the application of the above-mentioned technical solutions, the utility model has the following advantages compared with the prior art: the seat rod assembly and the seat extension rod connected to each other are used to form the entire seat rod so that the seat rod can form a rigid seat rod when the vehicle frame is unfolded, When folded, they can be folded together to further reduce the occupied space of the folded frame; through the setting of the auxiliary locking device and unlocking mechanism, the seat bar assembly and the seat extension bar can be synchronized together when the frame is folded and unfolded Folding and unfolding is easy, and there is no additional step of folding the stroller itself.

Description of drawings

Fig. 1 is the three-dimensional structure schematic diagram when the children's stroller of the present invention is in the unfolded state;

Fig. 2 is a side view of the utility model when the children's stroller is in an unfolded state;

Fig. 3 is a side view of the utility model when the children's stroller is in a half-folded state;

Fig. 4 is a side view of the utility model when the children's stroller is in a folded state;

Figure 5 is an exploded view of the seat post assembly, seat extension bar and front wheel bracket;

Fig. 6 is the sectional view of A-A place in Fig. 2;

Fig. 7 is a sectional view of B-B in Fig. 6 when the vehicle frame is deployed;

Fig. 8 is a cross-sectional view of B-B in Fig. 6 in a semi-folded state of the vehicle frame;

Fig. 9 is a cross-sectional view of B-B in Fig. 6 when the vehicle frame is folded;

Among them: 1. Front wheel; 2. Rear wheel; 3. Front wheel bracket; 4. Rear wheel bracket; 5. Push rod; 6. Support rod; 7. Seat rod assembly; 8. Seat extension rod; 10. Lock slot : 11, deadbolt; 12, compression spring; 13, pin shaft; 14, sliding sleeve; 15, connector; 16, groove; 17, first rotary joint; 18, second rotary joint; 51, upper push rod ; 52, the lower push rod; 71, the seat bar body; 72, the seat bar fixture; 73, the waist hole.

detailed description

As shown in Figures 1 to 9, a children's stroller described in the utility model includes a frame with an unfolded state and a folded state, a front wheel 1 arranged at the front under the frame, and a rear wheel 1 arranged at the bottom of the frame. Part of the rear wheel 2. Described vehicle frame comprises the front wheel support 3 that the lower part is connected with front wheel 1, the rear wheel support 4 that the lower part is connected with rear wheel 2, push rod 5, support bar 6, seat bar assembly 7, seat extension bar 8, vehicle frame lock device (not shown) and accessory locking device.

The front wheel bracket 3 is rotationally connected with the rear wheel bracket 4 , and the upper end of the front wheel bracket 3 intersects with the upper end of the rear wheel bracket 4 to form a first rotating joint 17 . The push rod 5 is installed on the top of the front wheel bracket 3, and the push rod 5 includes an upper push rod 51 and a lower push rod 52 which is rotatably connected with the upper push rod 51, and the lower part of the lower push rod 52 is rotatably connected to the second At the first rotary joint 17 , the upper part of the lower push rod 52 intersects with the upper push rod 51 to form the second rotary joint 18 . The support rod 6 is installed between the push rod 5 and the rear wheel bracket 4 . The upper part of the support rod 6 is rotatably connected with the lower part of the upper push rod 51 , and the lower part of the support rod 6 is rotatably connected with the rear wheel bracket 4 .

The seat post assembly 7 is installed between the front wheel bracket 3 and the support bar 6 . The seat post assembly 7 includes a seat post body 71 and a seat post fixing part 72 . The seat post body 71 is in the shape of a U-shaped bar, and the two open ends of the seat post body 71 face the front of the stroller, and the seat post fixing member 72 is fixedly mounted on the end of the seat post body 72. The seat extension rod 8 is rotatably connected with the seat bar fixing part 72 , and the front wheel bracket 3 is rotatably connected with the seat bar fixing part 72 . The rotational connection between the seat post fixing member 72 and the front wheel bracket 3 is lower than the first rotational joint 17 .

When the vehicle frame is in the unfolded state, the rotational connection between the support rod 6 and the upper push rod 51 is lower than the second rotating joint 18 and the end of the support rod body 71 . The rear portion of the seat post body 71 is rotatably connected with the support bar 6 . The connection between the support rod 6 and the rear wheel bracket 4 is lower than the connection between the support rod 6 and the seat rod body 71 .

The auxiliary locking device is used to lock the seat post assembly 7 and the seat extension bar 8 in the unfolded state of the vehicle frame. The auxiliary locking device includes a lock groove 10 opened on the seat extension rod 8 , a lock tongue 11 slidably arranged on the seat rod assembly 7 , and a compression spring 12 arranged between the lock tongue 11 and the seat rod assembly 7 . The seat post body 71 is a hollow pipe structure, the compression spring 12 is installed in the seat post body 71, the lock tongue 11 is inserted into the seat post body 71 from the end of the seat post body 71 and abuts against the compression spring 12 on.

The lock groove 10 is provided at the rear portion of the seat extension rod 8, and the lock groove 10 has a plurality of them, and the plurality of lock grooves 10 are distributed in a circle centered on the rotation center of the seat extension rod 8 around the seat rod fixing member 72. on the circumference.

A waist-shaped hole 73 is opened on the seat post body 71 . The baby stroller also includes an unlocking mechanism, which includes a pin shaft 13 fixedly connected to the deadbolt 11, a sliding sleeve 14 rotatably sleeved on the pin shaft 13, and a sliding sleeve 14 fixedly mounted on the front wheel bracket 3. The connecting piece 15, the pin shaft 13 and the sliding sleeve 14 protrude from the waist hole 73 and are exposed outside the seat post body 71, and the front wheel bracket 3 is rotationally connected with the seat post fixing part 72 through the connecting piece 15. A groove 16 is formed on the connecting piece 15 , and the sliding sleeve 14 is mated with the groove 16 .

When the vehicle frame is in the unfolded state, the vehicle frame locking device locks the vehicle frame, the seat extension rod 8 stands upright along the extension direction of the seat rod assembly 7, and the compression spring 12 pushes the deadbolt 11 to pass through the seat rod to fix The member 72 snaps into the lock groove 10 of the seat extension rod 8 to lock the seat rod assembly 7 and the seat extension rod 8 to each other. The pin shaft 13 and the sliding sleeve 14 extend into the groove 16 , and the sliding sleeve 14 is in rolling connection with the groove 16 . When the vehicle frame is in the folded state, the pin shaft 13 and the sliding sleeve 14 are located outside the groove 16 , and the sliding sleeve 14 abuts against the connecting member 15 . The lock tongue 11 is pulled back into the seat rod body 71 and unlocked from the lock slot 10 , and the seat extension rod 8 is rotated and folded closer to the seat rod assembly 7 .

When the child stroller in the unfolded state is folded, the frame locking device is unlocked, and the front wheel bracket 3 is rotated around the first rotating joint 17 to move closer to the rear wheel bracket through the push rod 5, and the connecting piece 15 is connected to the front wheel bracket 3. Driven by the relative seat rod fixing part 72 to rotate, the sliding sleeve 14 rolls in the groove 16 of the connecting part 15 to the outside of the groove 16 until it leaves the groove 16 and abuts on the connecting part 15 . The front wheel bracket 3 drives the connecting piece 3 to move backward, and the connecting piece 15 squeezes the sliding sleeve 14 so that the sliding sleeve 14 drives the dead bolt 11 to move in the seat bar body to squeeze the compression spring 12 . The lock tongue 11 is separated from the lock groove 10 on the seat extension bar 8 . The seat extension rod is no longer bound by the lock tongue 11, and it rotates downward under the action of its own gravity and then folds closer to the seat rod body 11, so as to realize the folding process of the seat rod assembly 7 and the seat extension rod 8 during the folding process of the vehicle frame. Synchronous folding. The folded frame takes up less space.

When the child stroller in the folded state is unfolded, the front wheel bracket 3 moves forward, and the connecting piece 15 is driven by the front wheel bracket 3 to rotate relative to the seat bar fixing piece 72, and the sliding sleeve 14 is on the outer periphery of the connecting piece 15. Rolling, as the relative position of the groove 16 and the sliding sleeve changes and the compression spring 12 pushes the locking tongue 11 to move out of the seat post body 71 , the sliding sleeve 14 rolls from the edge of the groove 16 to the groove 16 . Move the seat extension rod 8 outward to make the seat extension rod 8 stand along the extension direction of the seat rod assembly, and the lock tongue 11 is stretched out and snapped into the lock groove 10 of the seat extension rod 8 to connect the seat extension rod 8 and the seat rod assembly 7 locking. So far, the seat extension rod 8 also unfolds and stands on the front end of the seat rod assembly 7 during the unfolding process of the vehicle frame.

As mentioned above, we have fully described according to the purpose of the utility model, but the utility model is not limited to the above-mentioned embodiment and implementation method. Practitioners in the relevant technical fields can make different changes and implementations within the scope permitted by the technical ideas of the present utility model.

Claims (10)

1. a children trolley, including the vehicle frame with deployed condition and folded state, it is arranged on the front-wheel (1) of vehicle frame lower front portion, it is arranged on the trailing wheel (2) of vehicle frame lower rear, it is characterized in that: described vehicle frame includes the front-wheel support (3) that bottom is connected with front-wheel (1), the rear wheel support (4) that bottom is connected with trailing wheel (2), push rod (5), support bar (6), seat post assembly (7), seat extension rod (8), frame locking device and attached locking device, described front-wheel support (3) and rear wheel support (4) are rotationally connected, described push rod (5) is installed in front-wheel support (3) top, described support bar (6) is installed between push rod (5) and rear wheel support (4), described seat post assembly (7) is installed between front-wheel support (3) and support bar (6), described seat extension rod (8) and seat post assembly (7) are rotationally connected, described attached locking device is for being locked in vehicle frame deployed condition by seat post assembly (7) and seat extension rod (8), described seat extension rod (8) is installed in seat post assembly (7) front end, when vehicle frame is in deployed condition, vehicle frame is locked by described frame locking device, described seat extension rod (8) supports vertical along the bearing of trend of seat post assembly (7), seat post assembly (7) and seat extension rod (8) are locked by described attached locking device mutually, when described vehicle frame folding, described frame locking device unlocks, described front-wheel support (3) rotates the described attached locking device of drive relative to seat bar assembly (7) and unlocks, and described push rod (5), rear wheel support (4), front-wheel support (3), seat extension rod (8) and seat post assembly (7) mutually rotate and draw close folding.

2. children trolley according to claim 1, it is characterized in that: described front-wheel support (3) is fixed with groove (16), described seat post assembly (7) is provided with bearing pin (13), and when described vehicle frame is in the deployed, described bearing pin (13) is positioned at groove (16);When described vehicle frame is in folding position, described bearing pin (13) moves to groove (16) outward along the inwall of groove (16).

3. children trolley according to claim 1, it is characterized in that: described seat post assembly (7) includes seat post body (71) and is installed on the seat post fixture (72) of seat post body (71) end, described seat extension rod (8) and seat post fixture (72) are rotationally connected, described front-wheel support (3) and seat post fixture (72) are rotationally connected, and described support bar (6) and seat post body (71) are rotationally connected.

4. children trolley according to claim 3, it is characterized in that: described attached locking device includes the locked groove (10) being opened on seat extension rod (8), the dead bolt (11) being slidably arranged on seat post assembly (7) and the compression spring (12) being arranged between dead bolt (11) and seat post assembly (7), when vehicle frame launches, described compression spring (12) promotes dead bolt (11) to snap in locked groove (10) and seat post assembly (7) and seat extension rod (8) is mutually locked; Working as vehicle frame folding, pull dead bolt (11) to depart from locked groove (10) and unlock, described seat extension rod (8) rotates draws close folding with seat post assembly (7).

5. children trolley according to claim 4, it is characterized in that: the fitting structure that described seat post body (71) is hollow, described compression spring (12) is installed in seat post body (71), described dead bolt (11) inserts in seat post body (71) from the end of seat post body (71) and is against in compression spring (12), when vehicle frame launches, described dead bolt (11) snaps in the locked groove (10) of seat extension rod (8) through seat post fixture (72); Work as vehicle frame folding, pull in dead bolt (11) retraction seat post body (71) and depart from unblock with locked groove (10).

6. children trolley according to claim 4, it is characterized in that: described locked groove (10) is opened in the rear portion of seat extension rod (8), described locked groove (10) has multiple, the plurality of locked groove (10) be distributed in seat extension rod (8) around the center of rotation of seat post fixture (72) on the circumference in the center of circle.

7. children trolley according to claim 4, it is characterized in that: described seat post body (71) offers waist-shaped hole (73), described children trolley also includes solving latch mechanism, described solution latch mechanism includes the bearing pin (13) that be connected fixing with dead bolt (11), it is set in the sliding sleeve (14) on bearing pin (13) and the connector (15) being installed on front-wheel support (3) rotationally, described bearing pin (13) and sliding sleeve (14) stretch out described waist-shaped hole (73) and expose at seat post body (71) outward, described front-wheel support (3) is rotationally connected by connector (15) and seat post fixture (72), described connector (15) offers groove (16), described sliding sleeve (14) and groove (16) are connected, when vehicle frame is in deployed condition, described bearing pin (13) and sliding sleeve (14) stretch in groove (16), described sliding sleeve (14) rolls with groove (16) and is connected, when vehicle frame is in folded state, it is outside that described bearing pin (13) and sliding sleeve (14) are positioned at groove (16), described sliding sleeve (14) is against on connector (15), during folding stand, front-wheel support (3) rotates and makes connector (15) drive sliding sleeve (14) to roll until sliding sleeve (14) leaves groove (16) groove (16) in, and described connector (15) extrudes sliding sleeve (14) drive dead bolt (11) and separates with locked groove (10) to seat post body (71) contract and unlocked by attached locking device.

8. children trolley according to claim 1, it is characterized in that: the upper end of the upper end of described front-wheel support (3) and rear wheel support (4) is crossed to form the first cradle head (17), and described seat post assembly (7) is rotationally connected place lower than the first cradle head (17) with front-wheel support (3).

9. children trolley according to claim 8, it is characterized in that: described push rod (5) includes upper push-rod (51) and the lower push-rod (52) being rotationally connected with upper push-rod (51), the lower rotational of described lower push-rod (52) is connected to the first cradle head (17) place, the top of described lower push-rod (52) and upper push-rod (51) are crossed to form the second cradle head (18), described support bar (6) top is connected with upper push-rod (51) lower rotational, and described support bar (6) bottom and rear wheel support (4) are rotationally connected.

10. children trolley according to claim 9, it is characterized in that: when vehicle frame is in deployed condition, described support bar (6) and upper push-rod (51) be rotationally connected place lower than the second cradle head (18), the junction of described support bar (6) and rear wheel support (4) is lower than the junction of described support bar (6) Yu seat post assembly (7).