CN220363384U - Push rod assembly and child cart - Google Patents

Abstract

The utility model discloses a push rod assembly and a child stroller, wherein the push rod assembly comprises push rods positioned at the left side and the right side and a cross brace arranged between the push rods at the two sides, the cross brace comprises two support rods with one end part in rotary connection, the other end parts of the support rods are respectively in rotary connection with the push rods at the corresponding sides, the push rod assembly further comprises a first locking mechanism for locking the positions of the support rods and the push rods, the push rod assembly further comprises a blocking piece for preventing the first locking mechanism from locking when the two support rods relatively rotate to deviate from an unfolding state, and the blocking piece is respectively arranged at the left side and the right side corresponding to the first locking mechanism. When the stay rod rotates to deviate from the unfolding state, the first locking mechanism cannot be locked again due to the blocking of the blocking piece, so that the first locking mechanism is always kept in an unlocking state. Therefore, when the push rod assembly is folded and misoperation is carried out to pull up the stay bar and the push rod on one side, the pulled stay bar and the push rod can be restored to the folded position without operating the unlocking mechanism, and the push rod assembly is not easy to damage.

Description

Push rod assembly and child cart

Technical Field

The utility model relates to the technical field of children products, in particular to a push rod assembly and a children handcart.

Background

Child carts are typically used when a adult is carrying a child outside. The child stroller is generally foldable to facilitate portability and storage of the push rod assembly. The baby carriage generally comprises a carriage frame, the carriage frame comprises a push rod assembly, the push rod assembly comprises push rods positioned at the left side and the right side and push rod cross struts arranged between the push rods at the left side and the right side, each push rod cross strut comprises two supporting rods with one end part in rotary connection, and the other end parts of the two supporting rods are respectively in rotary connection with the push rods at the corresponding sides. The relative position between the push rod and the stay rod is locked by a locking mechanism. When the baby carriage is folded, the two supporting rods rotate relative to the push rods, so that the push rods at the two sides are close to each other.

In the prior art, when the push rod assembly is in a folded state, such as misoperation, the push rod assembly pulls up the support rod on one side and the push rod connected with the support rod assembly, the support rod on the other side and the push rod connected with the support rod assembly can move to the unfolding position, and at the moment, the support rod on the other side and the position of the push rod connected with the support rod assembly can be automatically locked through the locking mechanism. The pulled-up stay and the push rod connected thereto must be moved to the folded position after the unlocking mechanism of the other side is operated to unlock the locking mechanism, so that the user can forcibly press down the pulled-up stay and the push rod connected thereto without making the specific circumstances clear, thereby easily damaging the push rod assembly.

Disclosure of Invention

The present utility model addresses the deficiencies of the prior art by providing a push rod assembly that is not lockable by a first locking mechanism when the strut is rotated away from the deployed condition.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a push rod subassembly, includes the push rod that is located the left and right sides and sets up in the left and right sides between the push rod the stull, the stull includes two vaulting poles that one end rotated and is connected, two the other end of vaulting pole respectively with correspond one side the push rod rotates and is connected, the push rod subassembly still includes and is used for with the vaulting pole with the first locking mechanism of the position locking of push rod, first locking mechanism sets up respectively in the left and right sides, works as when the push rod subassembly is in the expansion state, the left and right sides first locking mechanism all is in the locking state, the push rod subassembly still includes two can prevent when the relative rotation deviation expansion state of vaulting pole the blocking piece of first locking mechanism locking, the blocking piece corresponds first locking mechanism sets up respectively in the left and right sides.

Preferably, the first locking mechanism comprises a locking piece slidably arranged on the push rod and a locking groove matched with the locking piece and arranged on the support rod, when the first locking mechanism is in a locking state, the locking piece is inserted into the locking groove, and when the first locking mechanism is in an unlocking state, the locking piece is separated from the locking groove.

Further, the blocking member on each side is slidably disposed on the stay bar, and is disengaged from the locking groove when the push rod assembly is in the unfolded state, and one end portion of the blocking member is inserted into the locking groove when the two stay bars are relatively rotated to deviate from the unfolded state.

Further, the blocking piece can be arranged on one supporting rod in a sliding mode, a concave portion is formed in the other supporting rod, when the push rod assembly is in the unfolding state, the other end portion of the blocking piece is inserted into the concave portion, and when the two supporting rods relatively rotate to deviate from the unfolding state, the other end portion of the blocking piece is separated from the concave portion.

Further, one side surface of the concave part is a slope which obliquely intersects with the sliding direction of the blocking piece, and when the other end part of the blocking piece is positioned in the concave part, the other end part of the blocking piece is abutted against the slope for matching.

Still further, the other side surface of the concave portion is a straight surface parallel to the sliding direction of the blocking member, and the straight surface is located below the inclined surface.

Further, each of the adjacent end portions of the stay bars is provided with a joint, the joints of the two stay bars are rotatably connected, the joint is circular, the concave portion is concave inwards from the outer peripheral surface of the joint, and when the two stay bars rotate relatively, the other end portion of the blocking piece abuts against the outer peripheral surface of the joint and rotates along the outer peripheral surface of the joint.

Preferably, the push rod assembly further comprises an unlocking mechanism for driving the first locking mechanism to unlock, the unlocking mechanism comprises an unlocking button, an unlocking piece, a first traction rope and a second traction rope, the unlocking button and the unlocking piece can be slidably arranged on the push rod, one end part of the first traction rope is arranged on the unlocking button, the other end part of the first traction rope is arranged on the unlocking piece, one end of the second traction rope is arranged on the unlocking piece, and the other end part of the second traction rope is arranged on the locking piece.

Further, the push rod includes first push rod, can follow the length extending direction of first push rod sets up slidingly second push rod on the first push rod and be used for with the relative position locking of first push rod with second push rod's second locking mechanism, unlock button with the release piece homoenergetic is set up slidingly on the first push rod, the other tip of vaulting pole with first push rod rotates to be connected, unlocking mechanism still includes the third traction cable, one end connection of third traction cable is in on the release piece, the other end of third traction cable is direct or indirect connection is in on the second locking mechanism.

The present utility model also provides a stroller having a push rod assembly according to any one of the above.

Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the push rod assembly can be folded, and when the push rod assembly is folded, the two supporting rods can relatively rotate to enable the push rods on the two sides to be close. When the stay rod rotates to deviate from the unfolding state, the first locking mechanism cannot be locked again due to the blocking of the blocking piece, so that the first locking mechanism always keeps the unlocking state. Therefore, when the push rod assembly is in a folded state, the push rod connected with the push rod assembly is pulled up by misoperation, the pulled-up push rod and the push rod connected with the push rod assembly can be restored to the folded position without operating the unlocking mechanism, and therefore the push rod assembly is not easy to damage.

Drawings

FIG. 1 is a partially exploded perspective view of a push rod assembly of the present embodiment in an expanded state;

FIG. 2 is a partially exploded front view of the push rod assembly of the present embodiment in an expanded state;

FIG. 3 is a schematic top view of the putter assembly of the present embodiment in an expanded state;

FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at A;

FIG. 6 is a schematic top view of the push rod assembly of the present embodiment in a folded state;

FIG. 7 is a schematic cross-sectional view taken along line A-A of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

fig. 9 is a perspective view of the child stroller of the present embodiment when the stay bar at one side and the push rod connected thereto are pulled up by a mistake in the folded state;

FIG. 10 is a front view schematically showing a child stroller of the present embodiment in a folded state when a stay bar on one side and a push rod connected thereto are pulled up by a mistake;

FIG. 11 is a perspective view of the stroller in a folded state according to the present embodiment;

fig. 12 is a front view schematically showing the stroller of the present embodiment in a folded state.

Wherein: 1. a push rod; 11. a first push rod; 12. a second push rod; 13. a third push rod; 2. a brace rod; 21. a joint; 211. a concave portion; 211a, inclined surfaces; 211b, straight face; 22. a locking groove; 31. a first shaft; 32. a second shaft; 4. a locking member; 41. a locking part; 5. a first elastic member; 6. a blocking member; 71. an unlock button; 72. an unlocking member; 73. a first traction cable; 74. a second traction cable; 75. and a third traction rope.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

As shown in fig. 1 and 2, the push rod assembly of the present utility model includes push rods 1 on the left and right sides and a wale provided between the push rods 1 on the left and right sides.

The cross brace comprises two stay bars 2, one end parts of the two stay bars 2 are rotationally connected through a first shaft 31, and the other end parts of the two stay bars 2 are respectively rotationally connected with the push rod 1 on the corresponding side through a second shaft 32. Both struts 2 are rotatable relative to the push rod 1, thereby folding and unfolding the push rod assembly.

In this embodiment, the adjacent end portions of the two struts 2 are each provided with a joint 21, the joints 21 are circular, and the two joints 21 are rotatably connected by the first shaft 31.

When the push rod assembly is in the unfolded state, the two supporting rods 2 extend along the left and right directions, and are away from each other, so that the push rods 1 on the left and right sides are away from each other, as shown in fig. 3 and 4. When the push rod assembly is in a folded state, the two stay bars 2 extend in the up-down direction, and are close to each other so that the push rods 1 on the left and right sides are close to each other, as shown in fig. 6, 7, 11 and 12.

The push rod assembly further comprises first locking mechanisms which are respectively arranged at the left side and the right side, and when the push rod assembly is in a unfolding state, the relative positions of the supporting rod 2 and the push rod 1 at the corresponding side are locked through the first locking mechanisms at each side. When the first locking mechanisms on the two sides are unlocked, the two supporting rods 2 can rotate relative to the push rod 1 so as to fold the push rod assembly.

The first locking mechanism of each side includes a locking piece 4 and a locking groove 22 matched with the locking piece 4, the locking piece 4 is slidably provided on the push rod 1, the locking groove 22 is provided at the other end portion of the stay 2, and one end portion of the locking piece 4 is provided with a locking portion 41. When the first locking mechanism is in the locked state, the locking portion 41 is inserted in the lock groove 22 so that the stay 2 cannot rotate relative to the push rod 1, as shown in fig. 4 and 5. When the first locking mechanism is in the unlocked state, the locking portion 41 is disengaged from the locking groove 22, and the stay bar 2 is rotatable relative to the push rod 1, as shown in fig. 7 and 8.

The push rod assembly further comprises a first elastic member 5, and the elastic force of the first elastic member 5 is used for driving the locking member 4 to slide in the direction of inserting the locking part 41 into the locking groove 22, so that the first locking mechanism is automatically locked from the unlocking state. One end of the first elastic member 5 is provided on the locking member 4, and the other end of the first elastic member 5 is provided on the push rod 1.

The push rod assembly further comprises a blocking piece 6, when the two support rods 2 are relatively rotated to deviate from the unfolding state after the first locking mechanism is unlocked, the blocking piece 6 can block the locking piece 4, so that the first locking mechanism cannot be automatically reset from the unlocking state to the locking state. The blocking members 6 are provided on the left and right sides, respectively, corresponding to the locking members 4.

Specifically, the stoppers 6 on each side are slidably provided on the stay 2, and the joint 21 is provided with a concave portion 211 recessed inward from the outer peripheral surface of the joint 21. When the push rod assembly is in the unfolded state, one end of the blocking member 6 is disengaged from the locking groove 22, and the other end of the blocking member 6 is inserted in the recess 211, as shown in fig. 4 and 5. When the push rod assembly is in the folded state, one end portion of the stopper 6 is inserted in the lock groove 22, and the other end portion of the stopper 6 is released from the recess 211 and is abutted against the outer peripheral surface of the joint 21, as shown in fig. 7 and 8. In this way, the stopper 6 forms a stopper for the lock 4 so that the lock 4 cannot slide in the direction in which the lock portion 41 is inserted into the lock groove 22, and the first lock mechanism is kept in the unlocked state.

When the stay bar 2 on one side and the push bar 1 connected thereto are pulled up due to a malfunction while the push bar assembly is in the folded state, as the stay bar 2 on the left side is pulled up, the stay bar 2 on the right side is rotated to the unfolded position with respect to the stay bar 2 on the left side, as shown in fig. 9 and 10. At this time, the concave portions 211 of the two stay bars 2 are positioned away from the blocking member 6, so that the blocking member 6 cannot be inserted into the concave portions 211 but can only abut against the outer peripheral surface of the joint 21, thereby always inserting one end portion of the blocking member 6 into the lock groove 22. Thus, the first locking mechanism is not locked, and the stay bar 2 pulled up by misoperation can move downwards to restore to the folded state all the time while the unlocked state is maintained.

One side surface of the concave portion 211 is a slope 211a obliquely intersecting the sliding direction of the stopper 6, and when the other end portion of the stopper 6 is located in the concave portion 211, the other end portion of the stopper 6 is fitted against the slope 211 a. Thus, when the first locking mechanism is unlocked, the two stay bars 2 rotate relative to the push rod 1, the other end portions of the blocking members 6 are driven to slide relative to the stay bars 2 and gradually release from the concave portions 211 by the engagement of the other end portions of the blocking members 6 with the inclined surfaces 211a, and when the blocking members 6 slide in this direction, one end portions of the blocking members 6 are gradually inserted into the lock grooves 22 until the other end portions of the blocking members 6 are completely released from the concave portions 211 and abut against the outer peripheral surfaces of the joints 21, and at this time, one end portions of the blocking members 6 are inserted into the lock grooves 22 so that the locking portions 41 cannot be inserted into the lock grooves 22.

The other side surface of the concave portion 211 is a straight surface 211b parallel to the sliding direction of the stopper 6, and the straight surface 211b is located below the inclined surface 211 a. Like this, when the push rod subassembly is folding, two vaulting poles 2 can only rotate downwards relative push rod 1 to when the push rod subassembly is in the folded condition, two vaulting poles 2 draw in between push rod 1 of both sides, make push rod subassembly folding back compact structure like this, small.

The push rod assembly further includes an unlocking mechanism that unlocks the first locking mechanism when the first locking mechanism operates the unlocking mechanism in a locked state.

The unlocking mechanism includes an unlocking button 71, an unlocking piece 72, a first traction cable 73 and a second traction cable 74. The unlocking button 71 and the unlocking piece 72 are both arranged on the push rod 1 in a sliding manner, the unlocking piece 72 is accommodated in the pipe cavity of the push rod 1, and the unlocking button 71 partially extends out of the push rod 1 so as to be conveniently operated by a human hand during unlocking. One end of the first traction cable 73 is provided on the unlocking button 71, and the other end of the first traction cable 73 is provided on the unlocking piece 72. One end of the second traction cable 74 is provided on the unlocking piece 72, and the other end of the second traction cable 74 is provided on the locking piece 4.

When the unlocking button 71 is operated in the locked state of the first locking mechanism, the unlocking member 72 is pulled to slide relative to the push rod 1 by the first pulling cable 73, and when the unlocking member 72 slides, the locking member 4 is pulled to slide relative to the push rod 1 by the second pulling cable 74, so that the locking part 41 is disengaged from the locking groove 22, and the first locking mechanism is unlocked.

In the present embodiment, the push rod 1 includes a first push rod 11, a second push rod 12, and a third push rod 13, and the first push rod 11, the second push rod 12, and the third push rod 13 each extend in the up-down direction. The second push rod 12 and the third push rod 13 are respectively provided with a pipe cavity extending along the length direction of the second push rod 12, the second push rod 12 is arranged in the pipe cavity of the third push rod 13 in a sliding mode, the first push rod 11 is arranged in the pipe cavity of the second push rod 12 in a sliding mode, and the other end portion of each supporting rod 2 is respectively connected with the upper end portion of the first push rod 11 in a rotating mode. When the push rod assembly is in the deployed state, the first push rod 11 protrudes upward mostly outside the lumen of the second push rod 12, and the second push rod 12 protrudes upward mostly outside the lumen of the third push rod 13. When the push rod assembly is in the collapsed state, the first push rod 11 is mostly retracted into the lumen of the second push rod 12, and the second push rod 12 is mostly retracted into the lumen of the third push rod 13.

The push rod 1 further comprises a second locking mechanism for locking the relative positions of the first push rod 11 and the second push rod 12. The second locking mechanism is in a locked state when the push rod assembly is in the deployed state.

The unlocking mechanism further includes a third traction cable 75, one end portion of the third traction cable 75 is connected to the unlocking piece 72, and the other end portion of the third traction cable 75 is directly or indirectly connected to the second locking mechanism. Thus, when the unlocking button 71 is operated in the locked state by the second locking mechanism, the second locking mechanism can be unlocked by the third traction cable 75. The unlocking button 71 can be operated to unlock the first locking mechanism and the second locking mechanism simultaneously, so that the first push rod 11 can slide relative to the second push rod 12 to be close to the second push rod 12, and the supporting rod 2 can rotate relative to the push rod 1 to enable the push rods 1 at two sides to be close to each other, so that the folding operation of the push rod assembly is convenient.

The push rod assembly further comprises a second elastic member (not shown in the drawings), and the elastic force of the second elastic member is used for driving the unlocking member 72 to reversely slide and reset. One end of the second elastic member is provided on the unlocking member 72, and the other end of the second elastic member is provided on the push rod 1.

The push rod assembly further comprises a third elastic member (not shown in the drawings), and the elastic force of the third elastic member is used for driving the unlocking button 71 to reversely slide and reset. One end of the third elastic member is provided on the unlocking button 71, and the other end of the third elastic member is provided on the push rod 1.

The push rod assembly can be applied to a stroller, and is in a unfolded state when the stroller is used. When the stroller is in the collapsed condition, the push rod assembly is also in the collapsed condition, as shown in fig. 11 and 12.

The above embodiments are provided to illustrate the technical concept and features of the present utility model and are intended to enable those skilled in the art to understand the content of the present utility model and implement the same, and are not intended to limit the scope of the present utility model. All equivalent changes or modifications made in accordance with the spirit of the present utility model should be construed to be included in the scope of the present utility model.

Claims (10)

1. The utility model provides a push rod subassembly, includes the push rod that is located the left and right sides and sets up in the left and right sides between the push rod stull, the stull includes two vaulting poles that a tip rotates to be connected, two the other tip of vaulting pole respectively with correspond one side the push rod rotates to be connected, push rod subassembly still includes and is used for with the vaulting pole with the first locking mechanical system of the position locking of push rod, first locking mechanical system sets up respectively in the left and right sides, works as when push rod subassembly is in the state of expanding, the first locking mechanical system of left and right sides all is in the locking state, its characterized in that: the push rod assembly further comprises a blocking piece which can prevent the first locking mechanism from being locked when the two support rods rotate relatively to deviate from the unfolding state, and the blocking piece is respectively arranged at the left side and the right side corresponding to the first locking mechanism.

2. The pushrod assembly according to claim 1, wherein: the first locking mechanism comprises a locking piece which can be arranged on the push rod in a sliding mode and a locking groove which is arranged on the support rod and matched with the locking piece, when the first locking mechanism is in a locking state, the locking piece is inserted into the locking groove, and when the first locking mechanism is in an unlocking state, the locking piece is separated from the locking groove.

3. The pushrod assembly according to claim 2, wherein: the blocking piece on each side can be arranged on the supporting rod in a sliding mode, when the push rod assembly is in the unfolding state, the blocking piece is separated from the locking groove, and when the two supporting rods relatively rotate to deviate from the unfolding state, one end portion of the blocking piece is inserted into the locking groove.

4. A putter assembly according to claim 3, wherein: the blocking piece can be arranged on one stay bar in a sliding mode, a concave portion is formed in the other stay bar, when the push rod assembly is in a unfolding state, the other end portion of the blocking piece is inserted into the concave portion, and when the two stay bars relatively rotate to deviate from the unfolding state, the other end portion of the blocking piece is separated from the concave portion.

5. The pushrod assembly according to claim 4, wherein: one side surface of the concave part is an inclined surface obliquely intersecting with the sliding direction of the blocking piece, and when the other end part of the blocking piece is positioned in the concave part, the other end part of the blocking piece is abutted against the inclined surface for matching.

6. The pushrod assembly according to claim 5, wherein: the other side surface of the concave part is a straight surface parallel to the sliding direction of the blocking piece, and the straight surface is positioned below the inclined surface.

7. The pushrod assembly according to claim 4, wherein: each brace rod is provided with a joint at one end adjacent to the brace rod, the joints of the two brace rods are connected in a rotating mode, the joints are round, the concave portions are concave inwards from the outer peripheral surfaces of the joints, and when the two brace rods rotate relatively, the other end of the blocking piece abuts against the outer peripheral surfaces of the joints and rotates along the outer peripheral surfaces of the joints.

8. The pushrod assembly according to claim 2, wherein: the push rod assembly further comprises an unlocking mechanism for driving the first locking mechanism to unlock, the unlocking mechanism comprises an unlocking button, an unlocking piece, a first traction rope and a second traction rope, the unlocking button and the unlocking piece can be slidably arranged on the push rod, one end part of the first traction rope is arranged on the unlocking button, the other end part of the first traction rope is arranged on the unlocking piece, one end of the second traction rope is arranged on the unlocking piece, and the other end part of the second traction rope is arranged on the locking piece.

9. The pushrod assembly according to claim 8, wherein: the push rod comprises a first push rod, a second push rod which can be arranged on the first push rod in a sliding manner along the length extending direction of the first push rod, and a second locking mechanism which is used for locking the relative positions of the first push rod and the second push rod, wherein the unlocking button and the unlocking piece can be arranged on the first push rod in a sliding manner, the other end part of the push rod is rotationally connected with the first push rod, the unlocking mechanism further comprises a third traction rope, one end part of the third traction rope is connected onto the unlocking piece, and the other end part of the third traction rope is directly or indirectly connected onto the second locking mechanism.

10. A child stroller, characterized in that: a push rod assembly according to any one of claims 1 to 9.