CN109291982B - Child cart - Google Patents
Child cart Download PDFInfo
- Publication number
- CN109291982B CN109291982B CN201710608210.2A CN201710608210A CN109291982B CN 109291982 B CN109291982 B CN 109291982B CN 201710608210 A CN201710608210 A CN 201710608210A CN 109291982 B CN109291982 B CN 109291982B
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- CN
- China
- Prior art keywords
- bracket
- sliding
- piece
- locking
- stroller
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B7/00—Carriages for children; Perambulators, e.g. dolls' perambulators
- B62B7/04—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor
- B62B7/06—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable
- B62B7/064—Carriages for children; Perambulators, e.g. dolls' perambulators having more than one wheel axis; Steering devices therefor collapsible or foldable the handle bar being parallel to the front leg
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Handcart (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
Abstract
The utility model discloses a child stroller, which comprises a stroller frame with an unfolding state and a folding state, wherein the stroller frame comprises a push handle, a lower push rod, a front bracket, a rear bracket, a first linkage rod, a second linkage rod and a bracket connecting piece; the trolley frame also comprises a sliding piece and an unlocking mechanism matched with the sliding piece, wherein the first linkage rod and the second linkage rod are respectively connected with the sliding piece and connected with the rear bracket through the sliding piece; the unlocking mechanism is regulated to unlock the sliding piece and drive the sliding piece to slide to the lower end of the rear bracket, so that the front bracket and the lower push rod are folded on two sides of the rear bracket. According to the child stroller disclosed by the utility model, linkage unlocking is realized at a plurality of folding positions, namely, one position is unlocked and the child stroller is folded, and other positions are simultaneously linked to be unlocked and folded together, so that the child stroller can be folded rapidly, is simple and convenient to fold, and is more convenient for a user in the use process.
Description
Technical Field
The utility model relates to the technical field of strollers, in particular to a convenient folding child stroller.
Background
Child strollers have been widely used because they provide great convenience for people to take care of their children. In order to facilitate carrying and storage of the stroller, the stroller is typically designed to be foldable. However, the existing child stroller is difficult to disassemble and fold, and a user needs to complete folding the child stroller through a plurality of procedures, so that even many users easily damage the child stroller in an incorrect disassembly manner.
Disclosure of Invention
In view of the above, the present utility model provides a convenient foldable stroller to solve the above-mentioned problems.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
according to an aspect of an embodiment of the present utility model, there is provided a stroller including a stroller frame having an unfolded state and a folded state, the stroller frame including a push handle, a push down rod, a front bracket, a rear bracket, a first linkage rod, a second linkage rod, and a bracket connection;
the lower end of the front support is provided with a front wheel assembly, and the lower end of the rear support is provided with a rear wheel assembly;
the front bracket, the rear bracket and the push rod are respectively connected to the bracket connecting piece in a rotating way;
one end of the first linkage rod is rotatably connected to the front bracket, and the other end of the first linkage rod is connected to the rear bracket;
one end of the second linkage rod is rotatably connected with the lower push rod, and the other end of the second linkage rod is connected with the rear bracket;
the trolley frame also comprises a sliding piece and an unlocking mechanism matched with the sliding piece, the first linkage rod and the second linkage rod are respectively connected with the sliding piece and the rear bracket through the sliding piece, and the sliding piece can be driven to slide along the axial direction of the rear bracket;
after the push handle is folded relative to the lower push rod, the unlocking mechanism is regulated and controlled to unlock the sliding piece and drive the sliding piece to slide to the lower end of the rear bracket, so that the front bracket and the lower push rod are folded on two sides of the rear bracket;
the trolley frame also comprises a transmission mechanism connected between the push handle and the push rod and a first locking mechanism matched with the transmission mechanism; the transmission mechanism comprises a transmission shaft, and the push handle rotates relative to the lower push rod through the transmission shaft;
the first locking mechanism comprises a regulating and controlling part arranged on the push handle, a first traction rope with one end connected with the regulating and controlling part, a locking block arranged at the other end of the first traction rope, and locking teeth sleeved on the transmission shaft, wherein wedge-shaped blocks are arranged on the locking teeth, and accommodating parts matched with the wedge-shaped blocks are arranged on the locking block;
the locking block rotates under the traction of the first traction rope, and the wedge-shaped block moves out of the accommodating part so that the locking teeth slide along the axial direction of the transmission shaft and are far away from the locking block to be unlocked;
the transmission mechanism further comprises a transmission wheel fixed on the transmission shaft;
the trolley frame also comprises a second locking mechanism, wherein the second locking mechanism comprises a second traction rope with one end wound on the driving wheel and an unlocking block connected with the other end of the second traction rope;
the unlocking block is located at the lower end of the lower push rod and used for being locked and unlocked with the support connecting piece in a matched mode.
The child stroller is further improved in that the unlocking mechanism comprises a locking piece matched and locked with the sliding piece and an unlocking piece matched and locked with the locking piece; the locking piece is driven by the unlocking piece to move so as to be separated from the sliding piece, so that the sliding piece can controllably slide along the axial direction of the rear bracket.
The child stroller is further improved in that the locking piece is a locking hook, and the locking hook is positioned at the upper end in the rear bracket; the lock hook comprises a lock hook body and a clamping hook arranged at one end of the lock hook body, the unlocking piece is connected to the other end of the lock hook body, and the lock hook body is rotatably connected in the rear bracket;
the lock hook body is driven by the unlocking piece to rotate, so that the clamping hook is separated from the sliding piece, and the sliding piece slides in the axial direction of the rear bracket.
The child stroller of the present utility model is further improved in that the rear wheel assembly includes a rear wheel joint pivotally connected to the rear wheel on the rear wheel joint, the rear wheel joint being rotatably connected to the rear bracket; the cart frame also comprises a linkage assembly arranged in the rear bracket, and the linkage assembly is connected with the rear wheel joint;
when the sliding piece slides to the lower end of the rear bracket, the sliding piece acts on the linkage assembly to enable the linkage assembly to be unlocked and then to be linked with the rear wheel joint, and then the rear wheel joint rotates relative to the cart frame.
The utility model further improves that the children cart comprises an unlocking mechanism and a linkage rod, wherein the unlocking mechanism comprises an upper rack, a lower rack and gears respectively meshed with the upper rack and the lower rack, the lower end of the lower rack is provided with a lock pin matched and locked with the rear wheel joint, and the lower end of the linkage rod is connected with the rear wheel joint.
The child stroller of the present utility model is further improved in that the rear wheels rotate within a range of-180 deg. relative to the sides of the stroller frame.
The child stroller is further improved in that the sliding piece is a sliding block, and the rear bracket is provided with a sliding groove matched with the sliding block; wherein the sliding block is limited in the sliding groove and moves along the sliding groove.
The child stroller is further improved in that the sliding piece is a sliding sleeve, and the rear bracket is provided with a sliding area matched with the sliding sleeve; the sliding sleeve is limited in the sliding area and slides in the sliding area.
The technical scheme provided by the embodiment of the utility model can comprise the following beneficial effects: according to the child stroller, the first linkage rod and the second linkage rod are matched with the unlocking mechanism to unlock, so that the front support and the lower push rod can be folded relative to the rear support, and the child stroller has the characteristics of smooth folding, rapidness, convenience and small integral folding volume.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.
Drawings
FIG. 1 is a schematic view of the overall structure of a stroller frame according to an exemplary embodiment of the present utility model;
FIG. 2 is a side schematic view of a cart frame shown in accordance with an exemplary embodiment of the present utility model;
FIG. 3 is a schematic illustration of a push handle fold of a stroller frame according to an exemplary embodiment of the present utility model;
FIG. 4 is a schematic view showing an exploded construction of a junction of a push handle and a push down lever according to an exemplary embodiment of the present utility model;
FIG. 5 is a schematic illustration of a stroller frame fold configuration according to an exemplary embodiment of the present utility model;
FIG. 6 is a schematic cross-sectional view of a rear bracket of a stroller frame according to an exemplary embodiment of the present utility model;
FIG. 7 is a side view of a cart frame shown in a collapsed configuration in accordance with an exemplary embodiment of the present utility model;
fig. 8 is a front view of a cart frame shown folded in accordance with an exemplary embodiment of the present utility model.
Detailed Description
The present utility model will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments are not intended to limit the utility model and structural, methodological, or functional modifications of these embodiments that may be made by one of ordinary skill in the art are included within the scope of the utility model.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
Some embodiments of the present utility model will be described in detail below with reference to the attached drawings, and the following examples and features of the examples may be combined with each other without conflict.
As shown in fig. 1 and 2, the stroller of the embodiment of the present utility model includes a stroller frame 1 having an unfolded state and a folded state, and the stroller is in the unfolded state when the stroller is used; when the child cart is not needed to be used or carried, the child cart is in a folded state by folding, so that the occupied space of the child cart is small. The cart frame 1 includes a push handle 11, a push down rod 12, a front bracket 13, a rear bracket 14, a first link 16, a second link 17, and a bracket connection 15.
Wherein, front wheel subassembly is equipped with to front bracket 13 lower extreme, and rear wheel subassembly is equipped with to rear bracket 14 lower extreme. The front wheel assemblies can be one group or two groups, and when the front wheel assemblies are one group, the front wheel assemblies are arranged at the middle position of the lower end of the front bracket 13; when the front wheel assemblies are two groups, the front wheel assemblies are respectively arranged at two sides of the lower end of the front bracket 13.
The front wheel assembly includes a front wheel joint 21 and a front wheel 22 pivotally connected to the front wheel joint 21, the front wheel 22 being pivoted about a pin with the front wheel joint 21. The front wheel joint 21 is connected with the front bracket 13 through a steering shaft, and can rotate 360 degrees by taking the steering shaft as an axis, the steering shaft is in a vertical direction, and the front wheel can rotate along with the front wheel joint by taking the steering shaft as an axis, so that the stroller can flexibly steer. Further, a brake assembly may be further disposed on the front wheel joint 21, so as to limit movement of the stroller and avoid accident caused by sliding the stroller.
The rear wheel assembly includes a rear wheel joint 31 and a rear wheel 32 pivotally connected to the rear wheel joint 31, and the rear wheel 32 rotates about a pin shaft with the rear wheel joint 31. The rear wheel joint 31 is rotatably connected to the rear bracket 14, specifically, the rear wheel joint 31 is connected to the rear bracket 14 through a pin shaft, and is turned over in the vertical direction and the horizontal direction by taking the pin shaft as an axis, and the rear wheel 32 of the present utility model can be turned over in the inner side of the cart frame 1 through the pin shaft, so that the rear wheel 32 does not exceed the width direction of both sides of the cart frame 1 after being folded. Of course, in other embodiments, the rear wheel 32 may also be flipped over from the outside of the stroller frame 1 via a pin.
The front bracket 13, the rear bracket 14 and the push rod 12 are respectively and rotatably connected to a bracket connecting piece 15, and the bracket connecting piece 15 is in a T shape and is used for being connected among the front bracket 13, the rear bracket 14 and the push rod 12. The front bracket 13 and the lower push rod 12 are respectively and axially connected to the bracket connecting piece 15 and can rotate relative to the bracket connecting piece 15, specifically, the lower push rod 12 can rotate and fold on the rear bracket 14, the front bracket 13 can also rotate and fold on the rear bracket 14, and when the cart frame 1 is in a folded state, the front bracket 13 and the lower push rod 12 are respectively positioned on two sides of the rear bracket 14.
The first linkage rod 16 is connected between the front bracket 13 and the rear bracket 14, and the second linkage rod 17 is connected between the push down rod 12 and the rear bracket 14. One end of the first linkage rod 16 is rotatably connected to the front bracket 13, and the other end of the first linkage rod 16 is connected to the rear bracket 14. One end of the second linkage rod 17 is rotatably connected to the push rod 12, the other end of the second linkage rod 17 is connected to the rear bracket 14, and when the cart frame 1 is in a use state, the first linkage rod 16 and the second linkage rod 17 have supporting effects, so that the overall structural strength of the cart frame 1 can be enhanced.
In the embodiment of the utility model, the push handle 11 is U-shaped, the front bracket 13 is also U-shaped, both sides of the cart frame 1 are provided with a combination of matched connection of the push rod 12, the bracket connecting piece 15, the rear bracket 14, the first linkage rod 16 and the second linkage rod 17, and when the cart frame 1 is folded or used, the push rod 12, the rear bracket 14, the first linkage rod 16 and the second linkage rod 17 on both sides synchronously move.
The trolley frame 1 of the utility model also comprises a transmission mechanism connected between the push handle 11 and the push down rod 12 and a first locking mechanism matched with the transmission mechanism. The push handle 11 can be folded relative to the push down rod 12 by a transmission mechanism, so that the cart frame 1 can be folded into a smaller size. The push handle 11 can be unfolded and locked relative to the push rod 12 by the first locking mechanism for use by a user.
As shown in fig. 1 to 4, the transmission mechanism includes a transmission shaft 40 through which the push handle 11 is rotated with respect to the push down rod 12, so that the push handle 11 can be folded or unfolded with respect to the push down rod 12. The first locking mechanism comprises a regulating and controlling part 41 arranged on the push handle 11, a first traction rope 42 with one end connected with the regulating and controlling part 41, a locking piece 43 arranged at the other end of the first traction rope 42, and locking teeth 44 sleeved on the transmission shaft 40. The lock teeth 44 are provided with wedge blocks, the lock blocks 43 are provided with accommodating parts matched with the wedge blocks, and the lock teeth 44 are matched and locked with the lock blocks 43 when the wedge blocks are assembled in the accommodating parts. The locking piece 43 rotates under the traction of the first traction cable 42, and the wedge-shaped piece moves out of the accommodating portion, so that the locking tooth 44 slides along the axial direction of the transmission shaft 40 to be far away from the locking piece 43, and thus the locking piece is unlocked. In this embodiment, the locking piece 43 is rotated so that the locking tooth 44 is gradually unscrewed from the receiving portion by the inclined surface of the wedge-shaped piece, so that the distance between the locking piece 43 and the locking tooth 44 is gradually increased, i.e., the locking tooth 44 is unlocked from the locking piece 43.
In an alternative embodiment of the present utility model, the adjusting portion 41 is a button provided on the push handle 11, and the lock teeth 44 are locked in the lock block 43 in the initial state, and the push handle 11 is unfolded relative to the push rod 12. When the user needs to fold the cart frame 1, the push handle 11 and the push rod 12 need to be unlocked in advance, namely, the push button is pressed to enable the push button to drive the first traction rope 42 to pull the locking block 43 to rotate, and at the moment, the locking teeth 44 move along the axial direction of the transmission shaft under the action of the wedge-shaped blocks on the locking teeth to be unlocked from the locking block 43, so that unlocking between the push handle 11 and the push rod 12 is realized, and the push handle 11 can rotate and fold relative to the push rod 12. Or the adjusting and controlling part 41 may also be a knob disposed on the push handle 11, and the adjusting and controlling part 41 may be a part of the push handle 11, and by rotating the knob part, the knob drives the first traction cable 42 to pull the transmission shaft 40 to rotate, so that the push handle 11 and the push rod 12 can be unlocked, and the repeated description is omitted.
Wherein the transmission mechanism further comprises a transmission wheel 45 fixed on the transmission shaft 40. The first locking mechanism further comprises an elastic member (not shown), which may be a spring, provided between the driving wheel 45 and the locking teeth 44. When the lock teeth 44 are unlocked relative to the lock block 43, the lock teeth 44 slide out from the lock block 43 to place the elastic member in a compressed state, and thus the lock teeth 44 receive an elastic restoring force of the elastic member. When the wedge-shaped block on the locking tooth 44 corresponds to the receiving portion, the locking tooth 44 is fitted into the locking block 43 by the elastic member to achieve locking.
The cart frame 1 further comprises a second locking mechanism, which comprises a second traction cable 46 with one end wound on the driving wheel 45, and an unlocking block (not shown) connected to the other end of the second traction cable 46. In the present utility model, the unlocking block is located at the lower end of the push rod 12, and is used for locking and unlocking with the bracket connecting piece 15 in a matching manner. Specifically, when the cart frame 1 is in the use state, the unlocking block can be inserted into the bracket connecting piece 15, so that the rotation of the push rod 12 relative to the bracket connecting piece 15 can be limited. The second locking mechanism is arranged in linkage with the transmission mechanism, after the first locking mechanism is unlocked, the transmission wheel 45 is linked to rotate through the transmission shaft 40 in the process that the push handle 11 rotates relative to the push rod 12, the transmission wheel 45 winds the second traction cable 46 on the transmission wheel, and the second traction cable 46 pulls the unlocking block to enable the unlocking block to be separated from the push rod 12, so that the unlocking of the push rod 12 and the bracket connecting piece 15 is realized.
The stroller frame 1 is further provided with a seat support 18 for mounting a child seat cushion, the seat support 18 being pivotally connected to the connection of the push down rod 12 and the support connection 15. The seat support 18 can be adjusted to rotate to adjust the angle of the child seat cushion, and the seat support 18 can also be adjusted to rotate to adapt to the folding angle when folding the stroller frame 1, thereby being beneficial to further reducing the space occupied by the stroller frame 1.
Further, as shown in fig. 1 and 5 to 8, the cart frame 1 of the present utility model further includes a sliding member 51 and an unlocking mechanism cooperating with the sliding member 51, wherein the first link lever 16 and the second link lever 17 are respectively connected to the sliding member 51 and to the rear bracket 14 through the sliding member 51, and the sliding member 51 can be driven to slide along the axial direction of the rear bracket 14. After the push handle 11 is folded relative to the push down rod 12, the unlocking mechanism is controlled to unlock the sliding member 51 and drive the sliding member 51 to slide towards the lower end of the rear bracket 14, so that the front bracket 13 and the push down rod 12 are folded on both sides of the rear bracket 14. That is, when the cart frame 1 is in the use state, the first link lever 16, the second link lever 17 and the slider 51 are locked to the upper end of the rear bracket 14; when the cart frame 1 is in a folded state, the first link lever 16, the second link lever 17, and the slider 51 are positioned at the lower end of the rear bracket 14.
In the present utility model, the unlocking mechanism includes a lock piece 52 that is cooperatively locked with the slider 51, and an unlocking piece 53 that is cooperatively locked with the lock piece 52. Wherein, the locking piece 52 is driven by the unlocking piece 53 to move so as to be separated from the sliding piece 51, so that the sliding piece 51 can controllably slide along the axial direction of the rear bracket 14. The unlocking mechanism is arranged at the upper end of the rear bracket 14, the sliding piece 51 is locked at the upper end of the rear bracket 14 when the stroller is in a use state, and the sliding piece 51 is unlocked by controlling the unlocking mechanism when the stroller needs to be folded, so that the stroller can be unlocked.
In an alternative embodiment, the sliding member 51 is a sliding block, and the rear bracket 14 is provided with a sliding groove matched with the sliding block, and the locking member 52 can be locked on the sliding block through a locking hook. The sliding block is limited in the sliding groove and moves along the sliding groove. Preferably, the sliding grooves are provided on the inner side surface of the rear bracket 14, so that the appearance of the stroller is more attractive and safer during folding. The first link lever 16 and the second link lever 17 move synchronously in cooperation with the slider so that the push down lever 12 and the front bracket 13 can be folded or unfolded simultaneously, thereby simplifying the folding or unfolding process of the cart frame 1 and accelerating the folding or unfolding speed.
In yet another alternative embodiment, the sliding member 51 is a sliding sleeve, and the rear bracket 14 is provided with a sliding region that cooperates with the sliding sleeve, wherein the sliding sleeve is limited and slides within the sliding region. The locking piece 52 is abutted against the sliding path of the sliding sleeve, so that the sliding of the sliding sleeve is limited, and the locking piece 51 is locked. The first linkage rod 16 and the second linkage rod 17 move synchronously with the sliding sleeve, so that the push down rod 12 and the front bracket 13 can be folded or unfolded simultaneously, the folding or unfolding step of the cart frame 1 can be simplified, and the folding or unfolding speed can be increased.
In the embodiment of the present utility model, the locking member 52 is a locking hook, the locking hook is located at an upper end in the rear bracket 14, and the middle position of the locking hook is connected in the rear bracket 14 through a pin, so that the locking hook can rotate in the rear bracket 14 around the pin as an axis. The latch hook comprises a latch hook body and a latch hook arranged at one end of the latch hook body, wherein the latch hook is used for being matched with the sliding block. The unlocking piece 53 is connected to the other end of the latch hook body, and the latch hook body is rotatably connected in the rear bracket 14, i.e. the middle position of the latch hook body is connected through a pin shaft. Correspondingly, the sliding piece is provided with a clamping part matched with the clamping hook, and when the clamping hook is clamped on the clamping part, the sliding piece is in a locking state; the latch hook body is driven by the unlocking piece 53 to rotate, so that the latch hook is separated from the sliding piece, unlocking is achieved, and the sliding piece 51 can slide in the axial direction of the rear bracket 14. Of course, in other embodiments of the present utility model, the locking member may be a lock pin, a lock tongue, etc., and the structural member capable of locking and unlocking should be included in the embodiments of the present utility model.
In an alternative embodiment, the unlocking member 53 is an unlocking strap connected to the latch hook body, or a button provided on the rear bracket 14. In the embodiment of the utility model, the unlocking piece 53 adopts an unlocking belt, two ends of the unlocking belt are respectively connected to the locking pieces 52 at two sides, and when a user needs to fold the cart frame 1, the user can unlock the cart frame 1 by pulling the unlocking belt, so that the cart frame 1 can be folded. In another embodiment, a button may be provided on the rear bracket 14, and folding of the stroller frame 1 may be achieved by manually pressing the button to interlock the locking member 52, thereby rotating the locking member 52 to unlock the sliding member 51. The unlocking piece of the present utility model is not limited to the embodiment of the unlocking belt and the button, and in other embodiments, the unlocking piece may be an electric linkage mechanism, a link mechanism matched with the unlocking piece, or the like.
The stroller frame 1 of the present utility model further comprises a linkage assembly provided in the rear bracket 14, the linkage assembly being connected to the rear wheel joint 31. The linkage assembly is matched with the rear wheel assembly, so that when the push rod 12 and the front bracket 13 are folded relative to the rear bracket 14, the rear wheels 32 can be simultaneously unlocked and triggered to be folded, and the folded size of the cart frame 1 can be further reduced. Specifically, when the slider 51 slides toward the lower end of the rear bracket 14, the slider 51 acts on the linkage assembly to unlock the linkage assembly and then link the rear wheel joint 31, thereby rotating the rear wheel joint 31 relative to the stroller frame 1. In this embodiment, the linkage assembly links the rear wheel joint 31 to rotate relative to the inner side of the cart frame 1, wherein the inner side in the present utility model means that the opposite side surfaces of the two rear wheels 32 are inner sides,
in an embodiment of the present utility model, the linkage assembly includes an unlocking mechanism and a linkage rod 61, the unlocking mechanism includes an upper rack 62, a lower rack 63 and a gear 64 engaged with the upper rack 62 and the lower rack 63 respectively, a lock pin 631 cooperating with the rear wheel joint 31 is provided at the lower end of the lower rack 63, and the lower end of the linkage rod 61 is connected to the rear wheel joint 31. Preferably, the linkage rod 61 is connected to an end of the rear wheel joint 31 near the outer side, so that the rear wheel joint 31 can drive the rear wheels 32 to rotate toward the inner side of the cart frame 1 (i.e., the two rear wheels 32 rotate toward opposite directions). Of course, in other embodiments, the lower end of the link 61 may be connected to another position of the rear wheel joint 31, so that the rear wheel 32 may be turned in another downward direction, for example, toward the outside of the cart frame 1, or toward the opposite direction of the front wheel 22 and the rear wheel 32, or the like.
In the combined structure of the linkage assembly, when the upper rack 62 moves downwards, the lower rack 63 moves upwards through the transmission of the gear 64, the lower rack 63 drives the lock pin 631 to unlock from the bracket connecting piece 15, at the moment, the rear wheel joint 31 can rotate relative to the lower push rod 12, the rear sliding piece 51 continues to move downwards and acts on the linkage rod 61, and the linkage rod 61 abuts against the rear wheel joint 31, so that the rear wheel joint 31 rotates by taking a connecting shaft with the lower push rod 12 as an axis, and the rear wheel joint 31 can be folded and retracted. Alternatively, the rear wheel 32 rotates in the range of-180 ° to 180 ° relative to the side of the cart frame 1. In the utility model, when the cart frame 1 is in a folded state, the rear wheels 32 rotate 90 degrees towards the inner side of the cart frame 1, so that the side surfaces of the rear wheels 32 are attached to the folded cart frame 1, and the rear wheels 32 can be prevented from occupying a large space. The folded cart frame 1 can stand autonomously by the side of the rear wheels 32 being grounded, and the front wheels 22 are shielded in the cart frame, so that the user does not easily touch dirt on the front wheels 22 and the rear wheels 32.
As shown in fig. 1 to 8, in the present utility model, the specific operation of switching the cart frame 1 from the use state to the folded state is: the first traction rope 42 pulls the locking piece 43 to rotate by controlling the regulating part 41 at the top of the push handle 11, so that the locking teeth 44 gradually unscrew from the accommodating part through the inclined plane of the wedge-shaped piece, the distance between the locking piece 43 and the locking teeth 44 is gradually increased, the locking teeth 44 are unlocked from the locking piece 43, and at the moment, a user can fold the push handle 11 on the push rod 12.
In the process that the push handle 11 rotates relative to the push rod 12, the transmission shaft 40 rotates together and drives the transmission wheel 45 to rotate, at the moment, the second traction rope 46 is triggered to pull the unlocking block, so that the unlocking block is detached from the bracket connecting piece 15, unlocking between the push rod 12 and the bracket connecting piece 15 is realized, at the moment, the unlocking belt is pulled to unlock the sliding piece 51, the cart frame 1 can simultaneously fold the push rod 12 and the front bracket 13 towards the rear bracket 14 under the action of self gravity, and at the moment, the first linkage rod 16 and the second linkage rod 17 slide along with the sliding piece 51 towards the lower end of the rear bracket 14; in the sliding process, the sliding piece 51 is firstly abutted against the upper rack 62, the upper rack 62 drives the gear 64 to rotate, the gear 64 drives the lower rack 63 to move upwards, so that the lock pin 631 of the lower rack 63 is unlocked from the rear wheel joint 31, the sliding piece 51 is abutted against the linkage rod 61, the linkage rod 61 acts on the rear wheel joint 31, the rear wheel joint 31 deflects the rear wheel 32 under the thrust of the linkage rod 61, the rear wheel 32 rotates towards the inner side of the cart frame 1, and after the rear wheel 32 rotates for 90 degrees, the folding of the cart frame 1 is completed. The joints of the folding process are tightly matched, the folding process is smooth, and good experience is brought to users.
The cart frame disclosed by the utility model realizes linkage unlocking at a plurality of folding positions, namely, one position is unlocked and the cart frame is folded in the folding process, and other positions are simultaneously linked to be unlocked and folded together, so that the cart frame can be folded rapidly, is simple and convenient to fold, and is more convenient for a user in the using process.
Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.
It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.
Claims (7)
1. The baby stroller is characterized by comprising a stroller frame with an unfolding state and a folding state, wherein the stroller frame comprises a push handle, a push rod, a front bracket, a rear bracket, a first linkage rod, a second linkage rod and a bracket connecting piece;
the lower end of the front support is provided with a front wheel assembly, and the lower end of the rear support is provided with a rear wheel assembly;
the front bracket, the rear bracket and the push rod are respectively connected to the bracket connecting piece in a rotating way;
one end of the first linkage rod is rotatably connected to the front bracket, and the other end of the first linkage rod is connected to the rear bracket;
one end of the second linkage rod is rotatably connected with the lower push rod, and the other end of the second linkage rod is connected with the rear bracket;
the trolley frame also comprises a sliding piece and an unlocking mechanism matched with the sliding piece, the first linkage rod and the second linkage rod are respectively connected with the sliding piece and the rear bracket through the sliding piece, and the sliding piece can be driven to slide along the axial direction of the rear bracket;
after the push handle is folded relative to the lower push rod, the unlocking mechanism is regulated and controlled to unlock the sliding piece and drive the sliding piece to slide to the lower end of the rear bracket, so that the front bracket and the lower push rod are folded on two sides of the rear bracket;
the rear wheel assembly comprises a rear wheel joint and a rear wheel which is axially connected to the rear wheel joint, and the rear wheel joint is rotationally connected to the rear bracket; the cart frame also comprises a linkage assembly arranged in the rear bracket, and the linkage assembly is connected with the rear wheel joint;
when the sliding piece slides to the lower end of the rear bracket, the sliding piece acts on the linkage assembly to enable the linkage assembly to be unlocked and then to be linked with the rear wheel joint, so that the rear wheel joint rotates relative to the cart frame;
the trolley frame also comprises a transmission mechanism connected between the push handle and the lower push rod and a first locking mechanism matched with the transmission mechanism, wherein the transmission mechanism comprises a transmission shaft, and the push handle rotates relative to the lower push rod through the transmission shaft;
the first locking mechanism comprises a regulating and controlling part arranged on the push handle, a first traction rope with one end connected with the regulating and controlling part, a locking block arranged at the other end of the first traction rope, and locking teeth sleeved on the transmission shaft, wherein wedge-shaped blocks are arranged on the locking teeth, and accommodating parts matched with the wedge-shaped blocks are arranged on the locking block;
the locking block rotates under the traction of the first traction rope, and the wedge-shaped block moves out of the accommodating part so that the locking teeth slide along the axial direction of the transmission shaft and are far away from the locking block to be unlocked;
the transmission mechanism further comprises a transmission wheel fixed on the transmission shaft;
the trolley frame also comprises a second locking mechanism, wherein the second locking mechanism comprises a second traction rope with one end wound on the driving wheel and an unlocking block connected with the other end of the second traction rope;
the unlocking block is located at the lower end of the lower push rod and used for being locked and unlocked with the support connecting piece in a matched mode.
2. The stroller of claim 1, wherein the unlocking mechanism comprises a locking member cooperatively locked with the slider, and an unlocking member cooperatively locked with the locking member; the locking piece is driven by the unlocking piece to move so as to be separated from the sliding piece, so that the sliding piece can controllably slide along the axial direction of the rear bracket.
3. The stroller of claim 2, wherein the locking member is a latch hook, the latch hook being located at an upper end within the rear bracket; the lock hook comprises a lock hook body and a clamping hook arranged at one end of the lock hook body, the unlocking piece is connected to the other end of the lock hook body, and the lock hook body is rotatably connected in the rear bracket;
the lock hook body is driven by the unlocking piece to rotate, so that the clamping hook is separated from the sliding piece, and the sliding piece slides in the axial direction of the rear bracket.
4. The stroller of claim 1, wherein the linkage assembly comprises an unlocking mechanism and a linkage rod, the unlocking mechanism comprises an upper rack, a lower rack and gears respectively meshed with the upper rack and the lower rack, a lock pin matched and locked with the rear wheel joint is arranged at the lower end of the lower rack, and the lower end of the linkage rod is connected with the rear wheel joint.
5. The stroller of claim 1, wherein the rear wheels are rotatable in a range of-180 ° to 180 ° relative to the sides of the stroller frame.
6. The stroller of claim 1, wherein the sliding member is a sliding block, and the rear bracket is provided with a sliding groove matched with the sliding block; wherein the sliding block is limited in the sliding groove and moves along the sliding groove.
7. The stroller of claim 1, wherein the slide is a sliding sleeve, and the rear bracket is provided with a sliding area matched with the sliding sleeve; the sliding sleeve is limited in the sliding area and slides in the sliding area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608210.2A CN109291982B (en) | 2017-07-24 | 2017-07-24 | Child cart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710608210.2A CN109291982B (en) | 2017-07-24 | 2017-07-24 | Child cart |
Publications (2)
| Publication Number | Publication Date |
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| CN109291982A CN109291982A (en) | 2019-02-01 |
| CN109291982B true CN109291982B (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710608210.2A Active CN109291982B (en) | 2017-07-24 | 2017-07-24 | Child cart |
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| CN (1) | CN109291982B (en) |
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| CN110001845B (en) * | 2019-03-14 | 2024-05-10 | 好孩子儿童用品有限公司 | Folding tricycle |
| CN109910980B (en) * | 2019-03-25 | 2024-07-02 | 中山市丰硕日用制品有限公司 | Trolley frame |
| CN110481624B (en) * | 2019-07-29 | 2024-09-24 | 好孩子儿童用品有限公司 | Child cart |
| CN110588758B (en) * | 2019-10-18 | 2025-01-07 | 中山市西区青原贸易代理服务部 | Infant's frame |
| CN115158433B (en) * | 2022-06-27 | 2023-12-29 | 好孩子儿童用品有限公司 | Child cart and folding method thereof |
| CN116889504B (en) * | 2023-08-08 | 2024-02-20 | 佛山市顺康达医疗科技有限公司 | Folding walking aid |
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| CN109291982A (en) | 2019-02-01 |
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