CN109572791B - Front wheel control structure of baby stroller - Google Patents
Front wheel control structure of baby stroller Download PDFInfo
- Publication number
- CN109572791B CN109572791B CN201910106894.5A CN201910106894A CN109572791B CN 109572791 B CN109572791 B CN 109572791B CN 201910106894 A CN201910106894 A CN 201910106894A CN 109572791 B CN109572791 B CN 109572791B
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- front wheel
- seat
- sliding block
- linkage
- operating handle
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- 230000007246 mechanism Effects 0.000 claims abstract description 97
- 230000009471 action Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
- B62B7/042—Steering devices
Abstract
The invention discloses a front wheel control structure of a baby stroller, which comprises a frame and a front wheel assembly, wherein a rotatable operating handle is arranged on a mounting seat at a pushing handle position of the frame, a front wheel locking mechanism for locking a front wheel is arranged at the front part of the frame, and a front wheel steering adjusting mechanism capable of driving the front wheel assembly to rotate left and right is arranged between the mounting seat and the front wheel locking mechanism; the front wheel steering adjusting mechanism comprises a rotary table which is arranged in the mounting seat and can rotate relative to the mounting seat, a rotating assembly which is fixed relative to the front wheel locking mechanism, and a second traction lock and a third traction lock which are respectively connected between the left side, the right side and the rotating assembly of the rotary table, wherein a linkage mechanism is arranged in the mounting seat, and the rotary table is in linkage fit with the operating handle through the linkage mechanism; the invention has novel structure and convenient operation, and can realize the left-right steering adjustment of the front wheel by rotating the operating handle.
Description
Technical Field
The invention relates to the field of strollers, in particular to a front wheel control structure of a stroller.
Background
Strollers are an essential travel tool for every family with children. For convenient carrying and transportation, most of foldable strollers are currently on the market. The existing front wheels of the baby carrier generally have no steering mechanism, the direction is not easy to adjust in the driving process, and the direction control can be completed by lifting the baby carrier sometimes. While the current higher-grade child pushchairs are equipped with front wheel steering mechanisms including vertical shafts or drive motors, the structure is complex, the cost is high and the operation is inconvenient. The existing front wheel steering mechanism of the baby carrier generally has only a simple left-right rotation adjusting function of the front wheel, but does not have a function of turning the ten thousand wheels.
Disclosure of Invention
The invention aims at: the front wheel control structure of the baby stroller is novel in structure and convenient to operate, and whether the left and right steering adjustment of the front wheels is performed or not can be selected by rotating an operation handle and pressing a button.
The technical scheme of the invention is as follows: the front wheel control structure of the baby stroller comprises a frame, a front wheel assembly and a rear wheel assembly, wherein the front wheel assembly and the rear wheel assembly are respectively arranged at the front side and the rear side below the frame, a vertical shaft assembly for being assembled with the frame is arranged at the upper part of the front wheel assembly, a mounting seat is arranged at a pushing handle of the frame, an operation handle capable of rotating relative to the mounting seat is arranged on the mounting seat, a front wheel locking mechanism in locking fit with the vertical shaft assembly is arranged at the front part of the frame, and a front wheel steering adjusting mechanism capable of driving the front wheel assembly to rotate left and right is arranged between the mounting seat and the front wheel locking mechanism; the installation seat is internally provided with a linkage mechanism, the linkage mechanism comprises a connecting piece matched with the front wheel steering adjusting mechanism, a sliding block which is arranged in the connecting piece and can slide relative to the connecting piece, a first spring which is arranged between the sliding block and the connecting piece, and a clamping groove which is arranged on the operation handle and can be used for clamping the sliding block, the sliding block is provided with a protruding portion, the upper portion of the connecting piece is provided with a guide groove matched with the protruding portion in a sliding manner, and the clamping groove is provided with a limiting portion corresponding to the protruding portion; the operating handle is provided with a button which can be pressed, and the inner end of the button extends into the clamping groove and is matched with the sliding block;
when the front wheel needs to be adjusted in a left-right steering mode, the limiting part of the clamping groove is opposite to the protruding part of the sliding block, at the moment, the protruding part of the sliding block is clamped in the limiting part of the clamping groove and the guide groove of the connecting piece under the action of the first spring, so that the operation handle is linked with the front wheel steering adjusting mechanism, and the linking mechanism is in a front wheel steering adjusting state; when the operating handle is rotated left and right, the operating handle drives the front wheel locking mechanism and the vertical shaft assembly to rotate left and right through the connecting piece and the front wheel steering adjusting mechanism, so that the front wheel steering adjustment is realized;
when the front wheel does not need to be steered left and right, the button is pressed, the button presses the sliding block to enable the sliding block to be separated from the clamping groove of the operating handle, and at the moment, the operating handle is not linked with the front wheel steering adjusting mechanism.
Further, the operating handle is in a straight shape, and the extending direction of the limiting part of the clamping groove is consistent with the extending direction of the operating handle; the two protruding parts of the sliding block are respectively formed at the front side and the rear side of the sliding block;
when the operating handle is horizontally arranged, the protruding part of the sliding block and the limiting part of the clamping groove are staggered in degree, the protruding part of the sliding block is propped against the bottom surface of the operating handle, and at the moment, the operating handle is not connected with the front wheel steering adjusting mechanism;
when the operation handle is rotated in a relatively flat state, the protruding portion of the sliding block faces the limiting portion of the clamping groove, the protruding portion of the sliding block is simultaneously clamped in the limiting portion of the clamping groove and the guide groove of the connecting piece under the action of the first spring, and at the moment, the operation handle is linked with the front wheel steering adjusting mechanism.
Further, the front wheel steering adjusting mechanism comprises a rotary table which is arranged in the mounting seat and can rotate relative to the mounting seat, a rotating assembly which is relatively fixed with the front wheel locking mechanism, and a second traction lock and a third traction lock which are respectively connected between the left side, the right side and the rotating assembly of the rotary table, wherein the rotary table is in clamping fit with the connecting piece;
when the protruding portion of the sliding block is clamped in the limiting portion of the clamping groove and the guide groove of the connecting piece, the operating handle is rotated left and right, the operating handle drives the rotating plate to rotate left and right through the connecting piece, and the rotating plate drives the rotating assembly to rotate through the second traction lock or the third traction lock, so that the front wheel assembly is driven to rotate left and right.
Further, the vertical shaft assembly comprises a vertical shaft arranged above the front wheel assembly and a shaft sleeve sleeved on the vertical shaft and relatively fixed with the vertical shaft, and the upper part of the shaft sleeve is provided with an outer convex tooth part; the front wheel locking mechanism comprises a limiting seat sleeved on the shaft sleeve and a linkage seat sleeved on the shaft sleeve and arranged below the limiting seat, wherein the limiting seat is provided with an inner tooth hole matched with the outer tooth part of the shaft sleeve, the linkage seat is provided with a round hole for the outer tooth part of the shaft sleeve to rotate, and the linkage seat is provided with a first guide surface which is obliquely arranged.
Further, a front wheel clutch control mechanism capable of releasing the locking of the front wheel locking mechanism to the shaft assembly is arranged between the mounting seat and the front wheel locking mechanism; the front wheel clutch control mechanism comprises a linkage piece which is arranged in the mounting seat and can move up and down, an upper sliding seat which is arranged in the mounting seat and can move transversely, a lower sliding seat which is sleeved outside the linkage seat and can slide back and forth, a first traction lock which is connected between the upper sliding seat and the lower sliding seat, a third spring which is arranged between the upper sliding seat and the mounting seat, and a second spring which is arranged between the lower sliding seat and the vertical shaft component; the linkage piece is provided with a butting ring corresponding to the protruding part of the sliding block, the linkage piece is provided with a downward extending guide part, the guide part is provided with a second guide surface which is obliquely arranged, the upper sliding seat is provided with a second oblique guide part which is in sliding fit with the second guide surface, and the lower sliding seat is provided with a first oblique guide part which is in sliding fit with the first guide surface of the linkage seat;
when the button is pressed, the button pushes down the sliding block, the sliding block drives the linkage piece to move downwards, the linkage piece drives the upper sliding seat to move inwards transversely through the sliding fit of the second guide surface and the second inclined guide part, the upper sliding seat pulls the first traction lock, the first traction lock drives the lower sliding seat to move backwards, the lower sliding seat drives the linkage seat and the limiting seat to move upwards through the sliding fit of the first inclined guide part and the first guide surface, so that the inner tooth hole of the limiting seat is separated from the outer tooth part of the shaft sleeve, the linkage seat is in rotating fit with the outer tooth part of the shaft sleeve, and universal rotating connection between the vertical shaft assembly of the front wheel assembly and the front wheel locking mechanism is realized.
The invention has the advantages that: the invention solves the problem that the front wheel of the existing baby stroller is not easy to turn, has the functions of adjusting the left and right rotation of the front wheel and turning the ten-thousand wheels, can realize the conversion between the two functions by pressing a button and rotating an operation handle, and has novel structure and convenient operation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, in which the drawings are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the structure of the invention when the operating handle is put flat;
FIGS. 2 and 3 are schematic views illustrating an assembled structure of the mounting base and the operating handle in FIG. 1;
FIG. 4 is a schematic view of the assembly structure of the operating handle of FIG. 1 with the mounting base rotated 90 degrees;
FIG. 5 is a schematic view of the front wheel assembly and frame of the present invention;
fig. 6 and 7 are schematic structural views of the handle of the present invention when the handle is used to drive the front wheel to rotate left and right.
Wherein: 1, a frame; 1-1 pushing handle; 1-2 mounting seats;
2 front wheel assembly; 2-1 a vertical shaft assembly; 2-1-1 vertical shaft; 2-1-2 shaft sleeves; 2-1-2-1 external teeth part; 2-1-3 outer sleeves; 2-1-3-1 extensions; 2-1-3-2 open slots; 2-1-4 middle seats;
3, a rear wheel assembly;
4, an operation handle; 4-1 clamping grooves; 4-1-1 limit parts;
5 front wheel locking mechanism; 5-1 limit seats; 5-1-1 inner sprocket holes; 5-2 linkage seats; 5-2-1 a first guide surface;
6, a front wheel clutch control mechanism; 6-1 linkage; 6-1-1 second guide surface; 6-1-2 abutting rings; 6-2, a slide seat is arranged on the upper surface of the lower plate; 6-2-1 second inclined guide portions; 6-3, lower sliding seat; 6-3-1 first inclined guide portion; 6-4 a first traction lock; 6-5 second springs; 6-6 third springs;
7, a front wheel steering adjusting mechanism; 7-1 turntable; 7-2 rotating the assembly; 7-3 a second traction lock; 7-4 a third traction lock;
8 a linkage mechanism; 8-1 connectors; 8-1-1 guide grooves; 8-2 sliding blocks; 8-2-1 protruding parts; 8-3 first springs.
Detailed Description
The above-described aspects are further described below in conjunction with specific embodiments. It should be understood that these examples are illustrative of the present invention and are not intended to limit the scope of the present invention. The implementation conditions employed in the examples may be further adjusted according to specific conditions, and the implementation conditions not specified are generally those in routine experiments.
As shown in fig. 1 to 7, a front wheel control structure of a stroller comprises a frame 1, a front wheel assembly 2 and a rear wheel assembly 3 which are respectively arranged at the front side and the rear side below the frame 1, wherein a vertical shaft assembly 2-1 for being assembled with the frame 1 is arranged at the upper part of the front wheel assembly 2, a mounting seat 1-2 is arranged at a push handle 1-1 position of the frame 1, an operating handle 4 capable of rotating relative to the mounting seat 1-2 is arranged on the mounting seat 1-2, a front wheel locking mechanism 5 which is in locking fit with the vertical shaft assembly 2-1 is arranged at the front part of the frame 1, and a front wheel clutch control mechanism 6 capable of unlocking the vertical shaft assembly 2-1 and a front wheel steering adjusting mechanism 7 capable of driving the front wheel assembly 2 to rotate left and right are respectively arranged between the mounting seat 1-2 and the front wheel locking mechanism 5; the installation seat 1-2 is internally provided with a linkage mechanism 8, the linkage mechanism 8 has two working states of a front wheel clutch state and a front wheel steering adjustment state, when the linkage mechanism 8 is in the front wheel clutch state, the linkage mechanism 8 drives the front wheel locking mechanism 5 to unlock the vertical shaft assembly 2-1 through the front wheel clutch control mechanism 6, so that the front wheel can rotate in a universal way; when the linkage mechanism 8 is in a front wheel steering adjustment state, the linkage mechanism 8 enables the operating handle 4 to be linked with the front wheel steering adjustment mechanism 7, and the front wheel assembly 2 is driven to rotate left and right by rotating the operating handle 4; the interlocking mechanism 8 is switched between the front wheel clutch state and the front wheel steering adjustment state by the above-described operation control.
In this embodiment, the specific structure of the linkage mechanism 8 and the operating handle 4 and the assembly relationship between them are as follows: the linkage mechanism 8 comprises a connecting piece 8-1 which is matched with the front wheel steering adjusting mechanism 7, a sliding block 8-2 which is arranged in the connecting piece 8-1 and can slide relative to the connecting piece 8-1, a first spring 8-3 which is arranged between the sliding block 8-2 and the connecting piece 8-1, and a clamping groove 4-1 which is arranged on the operating handle 4 and can be used for clamping the sliding block 8-2, wherein the sliding block 8-2 is provided with a protruding part 8-2-1, the upper part of the connecting piece 8-1 is provided with a guide groove 8-1-1 which is in sliding fit with the protruding part 8-2-1, and the clamping groove 4-1 is provided with a limiting part 4-1-1 which corresponds to the protruding part 8-2-1; the operating handle 4 is provided with a button 4-2 which can be pressed, and the inner end of the button 4-2 extends into the clamping groove 4-1 and is matched with the sliding block 8-2.
The operating handle 4 controls the interlocking mechanism 8 to switch between the front wheel clutch state and the front wheel steering adjustment state according to the following operating principle:
when the front wheel needs to rotate in a universal way, the button 4-2 is pressed, the button 4-2 presses the sliding block 8-2 to enable the sliding block 8-2 to be separated from the clamping groove 4-1 of the operating handle 4, at the moment, the operating handle 4 is not linked with the front wheel steering adjusting mechanism 7, meanwhile, the sliding block 8-2 which moves downwards drives the front wheel locking mechanism 5 to move upwards and separate from the clamping part of the vertical shaft assembly 2-1 through the front wheel clutch control mechanism 6, at the moment, the vertical shaft assembly 2-1 of the front wheel assembly 1 is connected with the front wheel locking mechanism 5 in a universal rotation way, and the linking mechanism 8 is in a front wheel clutch state.
When the front wheel needs left and right steering adjustment, the rotating operation handle 4 is right opposite to the protruding part 8-2-1 of the sliding block 8-2 from the limiting part 4-1-1 of the clamping groove 4-1, at the moment, the protruding part 8-2-1 of the sliding block 8-2 is clamped in the limiting part 4-1-1 of the clamping groove 4-1 and the guide groove 8-1-1 of the connecting piece 8-1 under the action of the first spring 8-3 at the same time, so that the operation handle 4 is linked with the front wheel steering adjustment mechanism 7, the sliding block 8-2 which moves upwards is separated from the front wheel clutch control mechanism 6, the two are not linked, and the linking mechanism 8 is in a front wheel steering adjustment state at the moment; when the operating handle 4 is rotated left and right, the operating handle 4 drives the front wheel locking mechanism 5 and the vertical shaft assembly 2-1 to rotate left and right through the connecting piece 8-1 and the front wheel steering adjusting mechanism 7, so that the front wheel steering adjustment is realized.
In this embodiment, the operating handle 4 is in a shape of a straight line, and the extending direction of the limiting portion 4-1-1 of the clamping groove 4-1 is consistent with the extending direction of the operating handle 4; two protruding parts 8-2-1 of the sliding block 8-2 are respectively formed at the front side and the rear side of the sliding block 8-2;
when the operating handle 4 is horizontally arranged, the protruding part 8-2-1 of the sliding block 8-2 and the limiting part 4-1-1 of the clamping groove 4-1 are staggered by 90 degrees, the protruding part 8-2-1 of the sliding block 8-2 is propped against the bottom surface of the operating handle 4, and at the moment, the operating handle 4 is not connected with the front wheel steering adjusting mechanism 7;
after the operation handle 4 rotates 90 degrees relative to the flat state, the protruding portion 8-2-1 of the sliding block 8-2 is opposite to the limiting portion 4-1-1 of the clamping groove 4-1, the protruding portion 8-2-1 of the sliding block 8-2 is simultaneously clamped in the limiting portion 4-1-1 of the clamping groove 4-1 and the guiding groove 8-1-1 of the connecting piece 8-1 under the action of the first spring 8-3, and at the moment, the operation handle 4 is linked with the front wheel steering adjusting mechanism 7.
In this embodiment, the specific structure of the front wheel steering adjustment mechanism 7 is as follows: the front wheel steering adjusting mechanism 7 comprises a rotary table 7-1 which is arranged in the mounting seat 1-2 and can rotate relative to the rotary table, a rotating assembly 7-2 which is fixed relative to the front wheel locking mechanism 5, and a second traction lock 7-3 and a third traction lock 7-4 which are respectively connected between the left side and the right side of the rotary table 7-1 and the rotating assembly 7-2, wherein the rotary table 7-1 is in clamping fit with the connecting piece 8-1.
The working principle of the front wheel steering adjusting mechanism 7 is as follows: when the protruding portion 8-2-1 of the sliding block 8-2 is simultaneously clamped in the limiting portion 4-1-1 of the clamping groove 4-1 and the guide groove 8-1-1 of the connecting piece 8-1, the operating handle 4 is rotated left and right, the operating handle 4 drives the rotary table 7-1 to rotate left and right through the connecting piece 8-1, and the rotary table 7-1 drives the rotating assembly 7-2 to rotate through the second traction lock 7-2 or the third traction lock 7-3, so that the front wheel assembly 2 is driven to rotate left and right.
In this embodiment, the specific structure of the vertical shaft assembly 2-1 and the front wheel locking mechanism 5 and the assembly relationship between them are as follows: the vertical shaft assembly 2-1 comprises a vertical shaft 2-1-1 arranged above the front wheel assembly 2 and a shaft sleeve 2-1-2 sleeved on the vertical shaft 2-1-1 and fixed relative to the vertical shaft 2-1-1, wherein the upper part of the shaft sleeve 2-1-2 is provided with an outer convex tooth part 2-1-2-1; the front wheel locking mechanism 5 comprises a limiting seat 5-1 sleeved on the shaft sleeve 2-1-2 and a linkage seat 5-2 sleeved on the shaft sleeve 2-1-2 and arranged below the limiting seat 5-1, the limiting seat 5-1 is provided with an inner tooth hole 5-1-1 matched with the outer tooth part 2-1-2-1 of the shaft sleeve 2-1-2, the linkage seat 5-2 is provided with a round hole for rotating the outer tooth part 2-1-2-1 of the shaft sleeve 2-1-2, and the linkage seat 5-2 is provided with a first guide surface 5-2-1 which is obliquely arranged.
In this embodiment, the specific structure of the front wheel clutch control mechanism 6 is as follows: the front wheel clutch control mechanism 6 comprises a linkage piece 6-1 which is arranged in the mounting seat 1-2 and can move up and down, an upper sliding seat 6-2 which is arranged in the mounting seat 1-2 and can move transversely, a lower sliding seat 6-3 which is sleeved outside the linkage seat 5-2 and can slide back and forth, a first traction lock 6-4 which is connected between the upper sliding seat 6-2 and the lower sliding seat 6-3, a third spring 6-6 which is arranged between the upper sliding seat 6-2 and the mounting seat 1-2, and a second spring 6-5 which is arranged between the lower sliding seat 6-3 and the vertical shaft component 2-1; the linkage piece 6-1 is provided with a butting ring 6-1-2 corresponding to the protruding part 8-2-1 of the sliding block 8-2, the linkage piece 6-1 is provided with a downward extending guide part, the guide part is provided with a second guide surface 6-1-1 which is obliquely arranged, the upper sliding seat 6-2 is provided with a second inclined guide part 6-2-1 which is in sliding fit with the second guide surface 6-1-1, and the lower sliding seat 6-3 is provided with a first inclined guide part 6-3-1 which is in sliding fit with the first guide surface 5-2-1 of the linkage seat 5-2.
In this embodiment, in order to enable the first traction lock 6-4 to drive the lower slide 6-3 to slide back and forth, a traction lock steering member 9 is disposed on the front side of the frame 1, a transverse slot 9-1 into which the first traction lock 6-4 transversely extends is disposed on the rear side of the frame, a longitudinal slot 9-2 into which the first traction lock 6-4 extends is disposed on the front side of the frame, and the longitudinal slot 9-2 is communicated with the transverse slot 9-1.
The working principle of the front wheel clutch control mechanism 6 is as follows: when the button 4-2 is pressed, the button 4-2 presses down the sliding block 8-2, the sliding block 8-2 drives the linkage piece 6-1 to move downwards, the linkage piece 6-1 drives the upper sliding seat 6-2 to move inwards transversely through sliding fit of the second guide surface 6-1-1 and the second inclined guide part 6-2-1, the upper sliding seat 6-2 pulls the first traction lock 6-4, the first traction lock 6-4 drives the lower sliding seat 6-3 to move backwards, the lower sliding seat 6-3 drives the linkage seat 5-2 and the limiting seat 5-1 to move upwards through sliding fit of the first inclined guide part 6-3-1 and the first guide surface 5-2-1, so that the inner tooth holes 5-1-1 of the limiting seat 5-1 are separated from the outer tooth parts 2-1-2-1 of the shaft sleeve 2-1-2, and the linkage seat 5-2 is in rotating fit with the outer tooth parts 2-1-2-1 of the shaft sleeve 2-2, and further universal locking mechanism is realized between the vertical shaft assembly 2-1 of the front wheel assembly 2 and the front wheel assembly 5.
As shown in the illustration of the embodiment, the vertical shaft assembly 2-1 further comprises an outer sleeve body 2-1-3 sleeved outside the vertical shaft 2-1 and relatively fixed with the vertical shaft 2-1, a middle seat 2-1-4 is arranged between the outer sleeve body 2-1-3 and the lower part of the shaft sleeve 2-1-2, the limit seat 5-1 and the linkage seat 5-2 are arranged between the outer sleeve body 2-1-3 and the upper part of the shaft sleeve 2-1-2 and are arranged above the middle seat 2-1-4, the outer sleeve body 2-1-3 is provided with an extension part 2-1-3-1 extending upwards out of the top end of the shaft sleeve 2-1-2, the limit seat 5-1 and the linkage seat 5-2 are in sliding fit with the extension part 2-1-3-1, and the outer sleeve body 2-1-3 is provided with an open slot 2-1-3-2 for the lower sliding seat 6-3 to extend into and be in sliding fit with the linkage seat 5-2.
The invention solves the problem that the front wheel of the existing baby stroller is not easy to turn, has the functions of adjusting the left and right rotation of the front wheel and turning the ten-thousand wheels, can realize the conversion between the two functions by pressing the button 4-2 and rotating the operating handle 4, and has novel structure and convenient operation.
The foregoing is merely a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. In addition to the embodiments described above, other embodiments of the invention are possible. All technical schemes formed by equivalent substitution or equivalent transformation fall within the scope of the invention.
Claims (3)
1. The utility model provides a front wheel control structure of baby's shallow, includes frame (1) and installs front wheel subassembly (2) and rear wheel subassembly (3) at frame (1) below front, rear side respectively, front wheel subassembly (2) upper portion has vertical scroll subassembly (2-1) that are used for with frame (1) assembly, its characterized in that: the front wheel steering adjusting mechanism comprises a pushing handle (1-1) of a frame (1), wherein an installation seat (1-2) is arranged at the pushing handle (1-1), an operation handle (4) capable of rotating relative to the installation seat (1-2) is arranged on the installation seat, a front wheel locking mechanism (5) in locking fit with a vertical shaft assembly (2-1) is arranged at the front part of the frame (1), and a front wheel steering adjusting mechanism (7) capable of driving the front wheel assembly (2) to rotate left and right is arranged between the installation seat (1-2) and the front wheel locking mechanism (5); the connecting device is characterized in that a linkage mechanism (8) is arranged in the mounting seat (1-2), the linkage mechanism (8) comprises a connecting piece (8-1) which is matched with the front wheel steering adjusting mechanism (7), a sliding block (8-2) which is arranged in the connecting piece (8-1) and can slide relative to the connecting piece (8-1), a first spring (8-3) which is arranged between the sliding block (8-2) and the connecting piece (8-1), and a clamping groove (4-1) which is arranged on the operating handle (4) and can be used for clamping the sliding block (8-2), the sliding block (8-2) is provided with a protruding portion (8-2-1), a guide groove (8-1-1) which is in sliding fit with the protruding portion (8-2-1) is arranged on the upper portion of the connecting piece (8-1), and the clamping groove (4-1) is provided with a limiting portion (4-1-1) which corresponds to the protruding portion (8-2-1); the operating handle (4) is provided with a button (4-2) which can be pressed, and the inner end of the button (4-2) extends into the clamping groove (4-1) and is matched with the sliding block (8-2);
when the front wheel needs to be adjusted in a left-right steering mode, the limiting part (4-1-1) from the operation handle (4) to the clamping groove (4-1) is opposite to the protruding part (8-2-1) of the sliding block (8-2), at the moment, the protruding part (8-2-1) of the sliding block (8-2) is clamped in the limiting part (4-1-1) of the clamping groove (4-1) and the guide groove (8-1-1) of the connecting piece (8-1) under the action of the first spring (8-3) at the same time, and therefore the operation handle (4) is linked with the front wheel steering adjusting mechanism (7), and the linkage mechanism (8) is in a front wheel steering adjusting state; when the operating handle (4) is rotated left and right, the operating handle (4) drives the front wheel locking mechanism (5) and the vertical shaft assembly (2-1) to rotate left and right through the connecting piece (8-1) and the front wheel steering adjusting mechanism (7), so that left and right steering adjustment of the front wheels is realized;
when the front wheel does not need left-right steering adjustment, the button (4-2) is pressed, the button (4-2) presses the sliding block (8-2) to enable the sliding block to be separated from the clamping groove (4-1) of the operating handle (4), and at the moment, the operating handle (4) is not linked with the front wheel steering adjustment mechanism (7);
the operating handle (4) is in a shape of a straight line, and the extending direction of the limiting part (4-1-1) of the clamping groove (4-1) is consistent with the extending direction of the operating handle (4); two protruding parts (8-2-1) of the sliding block (8-2) are respectively formed at the front side and the rear side of the sliding block (8-2);
when the operating handle (4) is horizontally arranged left and right, the protruding part (8-2-1) of the sliding block (8-2) and the limiting part (4-1-1) of the clamping groove (4-1) are staggered by 90 degrees, the protruding part (8-2-1) of the sliding block (8-2) is propped against the bottom surface of the operating handle (4), and at the moment, the operating handle (4) is not connected with the front wheel steering adjusting mechanism (7);
when the operation handle (4) rotates for 90 degrees relative to the horizontally arranged state, the protruding part (8-2-1) of the sliding block (8-2) is opposite to the limiting part (4-1-1) of the clamping groove (4-1), the protruding part (8-2-1) of the sliding block (8-2) is simultaneously clamped in the limiting part (4-1-1) of the clamping groove (4-1) and the guide groove (8-1-1) of the connecting piece (8-1) under the action of the first spring (8-3), and at the moment, the operation handle (4) is linked with the front wheel steering adjusting mechanism (7);
the front wheel steering adjusting mechanism (7) comprises a rotary table (7-1) which is arranged in the mounting seat (1-2) and can rotate relative to the rotary table, a rotating assembly (7-2) which is relatively fixed with the front wheel locking mechanism (5), and a second traction lock (7-3) and a third traction lock (7-4) which are respectively connected between the left side and the right side of the rotary table (7-1) and the rotating assembly (7-2), wherein the rotary table (7-1) is in clamping fit with the connecting piece (8-1);
when the protruding portion (8-2-1) of the sliding block (8-2) is clamped in the limiting portion (4-1-1) of the clamping groove (4-1) and the guide groove (8-1-1) of the connecting piece (8-1), the operating handle (4) rotates left and right, the operating handle (4) drives the rotary table (7-1) to rotate left and right through the connecting piece (8-1), and the rotary table (7-1) drives the rotating assembly (7-2) to rotate through the second traction lock (7-3) or the third traction lock (7-4), so that the front wheel assembly (2) is driven to rotate left and right.
2. The front wheel control structure of a stroller of claim 1, wherein: the vertical shaft assembly (2-1) comprises a vertical shaft (2-1-1) arranged above the front wheel assembly (2) and a shaft sleeve (2-1-2) sleeved on the vertical shaft (2-1-1) and relatively fixed with the vertical shaft (2-1-1), and an external convex tooth part (2-1-2-1) is arranged at the upper part of the shaft sleeve (2-1-2); the front wheel locking mechanism (5) comprises a limiting seat (5-1) sleeved on the shaft sleeve (2-1-2) and a linkage seat (5-2) sleeved on the shaft sleeve (2-1-2) and arranged below the limiting seat (5-1), the limiting seat (5-1) is provided with an inner tooth hole (5-1-1) matched with an outer tooth part (2-1-2-1) of the shaft sleeve (2-1-2), the linkage seat (5-2) is provided with a round hole for the outer tooth part (2-1-2-1) of the shaft sleeve (2-1-2) to rotate, and the linkage seat (5-2) is provided with a first guide surface (5-2-1) which is obliquely arranged.
3. The front wheel control structure of a stroller of claim 2, wherein: a front wheel clutch control mechanism (6) capable of releasing the front wheel locking mechanism (5) from locking the opposite shaft assembly (2-1) is arranged between the mounting seat (1-2) and the front wheel locking mechanism (5); the front wheel clutch control mechanism (6) comprises a linkage piece (6-1) which is arranged in the mounting seat (1-2) and can move up and down, an upper sliding seat (6-2) which is arranged in the mounting seat (1-2) and can move transversely, a lower sliding seat (6-3) which is sleeved outside the linkage seat (5-2) and can slide back and forth, a first traction lock (6-4) which is connected between the upper sliding seat (6-2) and the lower sliding seat (6-3), a third spring (6-6) which is arranged between the upper sliding seat (6-2) and the mounting seat (1-2) and a second spring (6-5) which is arranged between the lower sliding seat (6-3) and the vertical shaft component (2-1); the interlocking piece (6-1) is provided with an abutting ring (6-1-2) corresponding to the protruding part (8-2-1) of the sliding block (8-2), the interlocking piece (6-1) is provided with a downward extending guide part, the guide part is provided with a second guide surface (6-1-1) which is obliquely arranged, the upper sliding seat (6-2) is provided with a second oblique guide part (6-2-1) which is in sliding fit with the second guide surface (6-1-1), and the lower sliding seat (6-3) is provided with a first oblique guide part (6-3-1) which is in sliding fit with the first guide surface (5-2-1) of the interlocking seat (5-2);
when the button (4-2) is pressed, the button (4-2) presses down the sliding block (8-2), the sliding block (8-2) drives the linkage piece (6-1) to move downwards, the linkage piece (6-1) drives the upper sliding seat (6-2) to move inwards transversely through sliding fit of the second guide surface (6-1-1) and the second inclined guide part (6-2-1), the upper sliding seat (6-2) pulls the first traction lock (6-4), the first traction lock (6-4) drives the lower sliding seat (6-3) to move backwards, the lower sliding seat (6-3) drives the linkage seat (5-2) and the limit seat (5-1) to move upwards through sliding fit of the first inclined guide part (6-3-1) and the first inclined guide part (5-2-1), the inner tooth hole (5-1-1) of the limit seat (5-1) is separated from the outer tooth part (2-1-1) of the shaft sleeve (2-1), the linkage seat (5-2) and the outer tooth part (2-1-1) of the shaft sleeve (2-1), and further realizing universal rotation connection between the vertical shaft component (2-1) of the front wheel component (2) and the front wheel locking mechanism (5).
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| CN201910106894.5A CN109572791B (en) | 2019-02-02 | 2019-02-02 | Front wheel control structure of baby stroller |
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| CN201910106894.5A CN109572791B (en) | 2019-02-02 | 2019-02-02 | Front wheel control structure of baby stroller |
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