CN212766416U - Wheel orientation mechanism and baby carriage frame - Google Patents

Abstract

The utility model discloses a wheel orienting mechanism, it includes directional piece, connecting seat and directional round pin, and directional round pin sets up in the connecting seat with sliding, and the connecting seat is rotatably located to directional piece, and directional piece has directional portion and release lock portion, and directional round pin has the fastener, and when the relative connecting seat of directional piece rotated, the fastener can switch and the fastener in directional portion or release lock portion between directional portion and release lock portion to it is flexible to make directional round pin relative connecting seat. The utility model discloses a wheel orientation mechanism can fix a position and have simple structure's advantage to the wheel of perambulator. The utility model discloses still disclose a perambulator frame.

Description

Wheel orientation mechanism and baby carriage frame

Technical Field

The utility model relates to an orienting mechanism especially relates to a wheel orienting mechanism to the wheel location of perambulator.

Background

The perambulator turns to and drives the rear wheel through the front wheel and goes on, and for the steering of convenience perambulator, the perambulator front wheel sets up to universal wheel structure usually, and the foot rest rotatable coupling of wheel and perambulator, front wheel can change the direction wantonly, and the rear wheel direction then is fixed direction, can not rotate wantonly, and this direction is the stability that turns to in order to increase the perambulator.

The existing baby carriages in the market can be used forwards or backwards generally, so that the front wheels and the rear wheels of the baby carriages are all of universal wheel structures in order to adapt to the use state of the baby carriages in the forwards or backwards direction; however, the front wheel and the rear wheel are both provided with universal wheel mechanisms, so that the baby carriage is not smooth enough and is not easy to operate and control when steering; therefore, the wheel orientation mechanism is arranged on the front wheel or the rear wheel, however, the existing wheel orientation mechanism is relatively complex in structure, complex in operation and extremely inconvenient to use.

To solve the above problems, it is necessary to provide a wheel alignment mechanism.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wheel orientation mechanism who fixes a position and simple structure to the wheel of perambulator.

Another object of the present invention is to provide a stroller frame with simple structure and capable of positioning the wheels of the stroller.

In order to achieve the above object, the utility model provides a wheel orientation mechanism includes directional piece, connecting seat and directional round pin, and directional round pin sets up in the connecting seat with sliding, and the connecting seat is rotatably located to the directional piece, and the directional piece has directional portion and release lock portion, and the directional round pin has the fastener, and when the directional piece rotated relative to the connecting seat, the fastener can switch and the fastener in directional portion or release lock portion between directional portion and release lock portion to make the directional round pin flexible relative to the connecting seat.

Compared with the prior art, because the utility model discloses a connecting seat is rotatably located to wheel orientation mechanism's directional piece, and the directional piece has orientation portion and releases the lock portion, and the orientation round pin has the fastener, and the rotation of directional piece makes the fastener of orientation round pin switch back and forth and the fastener in orientation portion or release the lock portion between orientation portion and release the lock portion, and then makes the orientation round pin slide ground relative connecting seat flexible to insert or withdraw from the outside orientation hole that is used for the locking direction, thereby realize the locking or the unblock to the wheel, simple structure and convenient to use.

Preferably, the connecting seat includes a seat body and a limiting member covering the seat body, the limiting member is provided with a through hole for the orientation pin to extend out, and the orientation member is rotatably sleeved on the seat body.

Specifically, the limiting piece extends outwards to form a limiting edge, and the directional piece is provided with a groove matched with the limiting edge.

Preferably, the wheel orientation mechanism further comprises a first elastic member, and the first elastic member provides an elastic force for extending the orientation pin out of the connection seat.

Specifically, the orientation pin has a receiving groove that receives the first elastic member.

Preferably, the directional pin comprises a pin body and a shell which is sleeved outside the pin body in a sliding manner, the pin body constantly has a tendency of extending out of the shell, the shell is provided with a sliding hole, the pin body is convexly provided with a bulge, and the bulge is arranged in the sliding hole in a sliding manner.

Specifically, the sliding holes are symmetrically arranged on two sides of the shell, and the protrusions are symmetrically arranged on two sides of the pin body.

Specifically, the orientation pin further comprises a second elastic piece, and the second elastic piece elastically presses against the space between the shell and the pin body.

Preferably, a cavity is formed in the connecting seat, and the directional pin is slidably arranged in the cavity.

Specifically, the orientation piece is also provided with a guide rail which is communicated with the orientation part and the release part, and the clamping piece slides relative to the guide rail.

Specifically, the orientation piece is sleeved outside the connecting seat, and a limiting channel is formed among the outer wall of the connecting seat, the orientation part, the release part, the guide track and the inner wall of the orientation piece.

Specifically, the clamping piece is a protruding structure located on the outer side of the orientation pin, and the protruding structure extends into the limiting channel.

Specifically, the protruding structure is a columnar structure, a block structure or a sheet structure.

Specifically, the clamping piece is a boss structure located on the outer side of the orientation pin, and the boss structure and the orientation pin are of a stepped structure together.

Specifically, the orientation part and the unlocking part are arranged in a high and low manner, and the orientation part is positioned above the unlocking part.

Specifically, the orientation portion is an orientation concave or an orientation flat, and the release portion is a release concave or a release flat.

Specifically, the orientation part and the unlocking part are provided with at least one, the orientation part and the unlocking part are arranged at intervals, and the orientation part, the unlocking part and the guide track are connected along the circumferential direction of the inner wall of the orientation part.

Specifically, the orientation portion, the release portion and the guide rail jointly form an inclined plane, the clamping piece is slidably arranged on the inclined plane, a positioning structure is arranged between the connecting seat and the orientation piece, and the clamping piece is positioned on the orientation portion and the release portion through the positioning structure.

Specifically, the positioning structure comprises at least one positioning portion, a first matching portion and a second matching portion, the positioning portion is arranged on the positioning piece, the first matching portion and the second matching portion are arranged on the connecting seat at intervals, the positioning portion is matched with the first matching portion to enable the clamping piece to be positioned on the positioning portion, and the positioning portion is matched with the second matching portion to enable the clamping piece to be positioned on the releasing portion.

Specifically, the positioning portion is a protruding structure, and the first matching portion and the second matching portion are matching holes matched with the protruding structure.

Specifically, the positioning portion is symmetrically arranged on the positioning member, the first matching portion is symmetrically arranged on the connecting seat, and the second matching portion is symmetrically arranged on the connecting seat.

Specifically, the engaging member is an inclined surface structure matched with the inclined surface.

Preferably, the orientation piece is provided with a pushing piece, and the pushing piece is used for driving the orientation piece to rotate.

In order to achieve the above object, the utility model provides a baby carriage frame, it includes car foot, wheel and foretell wheel orientation mechanism, and the wheel is installed in the bottom of connecting seat, and the connecting seat pin joint has been seted up directional hole in the bottom of car foot in the car foot, and directional round pin inserts or withdraws from the directional hole of car foot.

Compared with the prior art, because the utility model discloses a baby carriage frame includes the car foot, wheel and wheel orientation mechanism, the wheel is installed in the bottom of connecting seat, the connecting seat pin joint in the car foot, the directional hole has been seted up to the bottom of car foot, the connecting seat is rotatably located to wheel orientation mechanism's directional piece, the directional piece has directional portion and release lock portion, the directional round pin has the fastener, the rotation of directional piece makes the fastener of directional round pin switch back and forth between directional portion and release lock portion and the fastener in directional portion or release lock portion, and then make the directional round pin slide ground relative connecting seat flexible, with the directional hole of inserting or withdrawing from the car foot, thereby realize locking or unblock to the wheel, simple structure and convenient to use.

Drawings

Fig. 1 is a schematic perspective view of a stroller frame according to a first embodiment of the present invention.

Fig. 2 is a schematic perspective view of a stroller frame according to a first embodiment of the present invention after hiding a portion of the frame and a side wheel and wheel orientation mechanism.

Fig. 3 is a schematic perspective view of the wheel and the wheel orientation mechanism of the first embodiment of the stroller frame of the present invention.

Fig. 4 is a schematic perspective view of the wheel and the wheel orientation mechanism in the first embodiment of the stroller frame according to the present invention in an exploded state.

Fig. 5 is a schematic perspective view of the wheel and wheel orientation mechanism of the first embodiment of the stroller frame of the present invention after the orientation member is hidden.

Fig. 6 is a schematic plan view of the wheel and wheel alignment mechanism of the stroller frame according to the first embodiment of the present invention, cut along the longitudinal section line.

Fig. 7 is a partially enlarged view of a portion a in fig. 6.

Fig. 8 is a perspective view of the alignment member in the first embodiment of the wheel alignment structure of the present invention.

Fig. 9 is a schematic partial perspective view of a stroller frame according to a second embodiment of the present invention.

Fig. 10 is a schematic view of the internal structure of the second embodiment of the stroller frame of the present invention.

Fig. 11 is a partial perspective view of a stroller frame according to a second embodiment of the present invention after hiding the legs and the directional members.

Fig. 12 is a schematic structural view of fig. 10 in a release state after the vehicle foot is hidden.

Fig. 13 is a schematic structural view of fig. 10 in a locked state after the vehicle foot is hidden.

Fig. 14 is a perspective view of the positioning member in the second embodiment of the stroller frame according to the present invention.

Fig. 15 is a schematic perspective view of another angle of the orientation member in the second embodiment of the stroller frame of the present invention.

Fig. 16 is a schematic perspective view of the orientation pin and the engaging piece according to the second embodiment of the stroller frame of the present invention.

Fig. 17 is a schematic partial perspective view of a stroller frame according to a third embodiment of the present invention.

Fig. 18 is a plan view of the stroller frame according to the third embodiment of the present invention, in a top view, with the wheels in a locked state.

Fig. 19 is a schematic plan view of a stroller frame according to a third embodiment of the present invention, with wheels in a locked state.

Fig. 20 is an internal structural view of the third embodiment of the stroller frame of fig. 17.

Fig. 21 is a schematic structural view of the orientation member in the third embodiment of the stroller frame of the present invention.

Fig. 22 is a cross-sectional view of the third embodiment of the stroller frame of fig. 17.

Detailed Description

In order to explain technical contents, structural features, and effects achieved by the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

Referring to fig. 1 to 4 and fig. 6 to 7, a specific structure of a stroller frame according to a first embodiment of the present invention is shown, in this embodiment, the stroller frame 100 includes a foot 20, a wheel 30 and a wheel orientation mechanism 10, the wheel orientation mechanism 10 is disposed between the foot 20 and the wheel 30, the wheel orientation mechanism 10 includes an orientation member 1, a connection seat 2, an orientation pin 3 and a first elastic member 5, the wheel 30 is mounted at the bottom of the connection seat 2, the foot 20 has a pedal 201, the connection seat 2 is pivotally connected to the pedal 201 of the foot 20, the connection seat 2 can pivot relative to the pedal 201, so as to drive the wheel 30 to pivot relative to the pedal 201, and the bottom of the foot 20 is provided with an orientation hole 202 for locking the direction; the orientation pin 3 is slidably disposed in the connection seat 2, preferably, the orientation pin 3 is eccentrically and slidably disposed in the connection seat 2 (the orientation pin 3 is located at a point b in fig. 3, and a center point of the connection seat 2 is located at a point a in fig. 3), the first elastic member 5 provides an elastic force for extending the orientation pin 3 out of the connection seat 2, so that the orientation pin 3 has a tendency to extend out of the connection seat 2, the orientation pin 3 can slide along the up-and-down direction of the connection seat 2, the sliding of the orientation pin 3 enables the orientation pin 3 to slide upwards under the action of the first elastic member 5 to extend out of the connection seat 2 and be inserted into the orientation hole 202 for locking at the vehicle foot 20, so as to achieve locking in the direction of the wheel 30, or the orientation pin 3 slides downwards against the elastic force of the first elastic member 5 to retract and withdraw from the orientation hole 202 of the vehicle foot 20, so as to achieve releasing; the orientation piece 1 is rotatably arranged on the connecting seat 2, the orientation piece 1 is provided with an orientation part 11 and a release part 12, the orientation part 11 and the release part 12 are formed by the protrusion of the orientation piece 1 to the connecting seat 2, the orientation pin 3 is provided with a clamping piece 31, the connecting seat 2 is provided with a through hole 24 corresponding to the clamping piece 31, the orientation pin 3 passes through the through hole 24 and penetrates out of the connecting seat 2 and extends to the orientation piece 1, the clamping piece 31 can slide up and down relative to the through hole 24 to allow the orientation pin 3 to slide up and down relative to the connecting seat 2, when the orientation piece 1 rotates relative to the connecting seat 2, the clamping piece 31 has the tendency of sliding up under the action of the first elastic piece 5, the clamping piece 31 can be switched between the orientation part 11 and the release part 12 and clamped with the orientation part 11 or the release part 12 to enable the orientation pin 3 to extend and retract relative to the connecting seat 2 so as to be inserted into or withdrawn from the orientation hole 202 of the vehicle foot 20, in other words, the rotation of the orientation piece, when the directional piece 1 is clamped on the directional part 11, the directional pin 3 extends out relative to the connecting seat 2 and is inserted into the directional hole 202 of the vehicle foot 20, and when the directional piece 1 is clamped on the unlocking part 12, the directional pin 3 retracts relative to the connecting seat 2 and exits from the directional hole 202 of the vehicle foot 20, so that the wheel 30 is locked or unlocked, and the structure is simple and the use is convenient. It is understood that, a manufacturer may also place the above-mentioned wheel orientation mechanism 10 upside down, mount the foot 20 on the top of the connecting base 2, pivot the wheel base of the wheel 30 on the bottom of the connecting base 2, form the orientation hole 202 on the wheel base of the wheel 30, and insert or withdraw the orientation pin 3 into or from the orientation hole 202 of the wheel base, so as to achieve the locking or unlocking of the direction of the wheel 30, but is not limited thereto. It will be understood that the directional member 1 may be an integrally formed structure, or may be formed by a multi-component assembly, and is not limited thereto, and the directional member 1 may be a circular ring structure, but is not limited thereto. More specifically, the following:

referring to fig. 7, the connecting seat 2 includes a seat body 21 and a limiting member 22 fixedly installed on the seat body 21, the limiting member 22 covers the seat body 21, the limiting member 22 is a circular cover plate structure, the limiting member 22 is provided with a through hole 221 through which the orientation pin 3 extends, the first elastic member 5 is pressed between the orientation pin 3 and the seat body 21, the orientation pin 3 has a tendency to press the through hole 221 under the elastic action of the first elastic member 5, the orientation member 1 is rotatably sleeved on the seat body 21, the orientation member 1 is engaged with the limiting member 22, so that the orientation member 1 is limited between the limiting member 22 and the seat body 21, that is, the orientation member 1 is sleeved on the outer side of the seat body 21, and the limiting member 22 limits the top of the orientation member 1, so that the orientation member 1 is limited to move along the up-down. Specifically, the limiting member 22 extends outwards to form a limiting edge 222, the orientation member 1 has a groove 14 matched with the limiting edge 222, the limiting edge 222 is located above the groove 14, and the limiting edge 222 and the groove 14 are matched with each other, so that the limiting edge 222 of the limiting member 22 limits the groove 14 of the orientation member 1, and the orientation member 1 is limited to move in the up-and-down direction of the connection seat 2; the connecting seat 2 is internally provided with a cavity 25 communicated with the through hole 221, the orientation pin 3 is slidably arranged in the cavity 25, the first elastic piece 5 is elastically pressed between the orientation pin 3 and the seat body 21, and the orientation pin 3 is slidably arranged in the cavity 25 and keeps a trend of extending out of the through hole 221. Referring to fig. 7-8, the orientation member 1 further has a guide rail 13, the guide rail 13 communicates with the orientation portion 11 and the lock release portion 12, the engaging member 31 slides relative to the guide rail 13, the orientation member 1 is sleeved on the connection seat 2, so that a user can rotate the orientation member 1 to rotate the orientation member 1 relative to the connection seat 2, the orientation portion 11, the lock release portion 12, the guide rail 13, an inner wall of the orientation member 1 and an outer wall of the connection seat 2 together define a limiting channel 4, the limiting channel 4 is located outside the cavity 25, the limiting channel 4 and the cavity 25 are arranged in a staggered manner and are communicated with each other through the through hole 24, the engaging member 31 is a protruding structure located outside the orientation pin 3, preferably, the protruding structure is a column structure, a block structure or a sheet structure, but not limited thereto. That is, the engaging member 31 extends into the limiting channel 4, the sliding switching of the engaging member 31 between the orienting portion 11 and the releasing portion 12 can be better realized by the guiding function of the guiding rail 13, the smoothness of the sliding of the engaging member 31 is improved, the outer wall of the connecting seat 2 extends towards the orienting member 1 to form the surrounding edge 23, thereby facilitating the installation of the orienting member 1 and the limiting of the orienting pin 3, the orienting portion 11 and the releasing portion 12 are arranged high and low, the orienting portion 11 is positioned above the releasing portion 12, at least one of the orienting portion 11 and the releasing portion 12 is arranged, the orienting portion 11 and the releasing portion 12 are arranged at intervals, and the orienting portion 11, the guiding rail 13 and the releasing portion 12 are sequentially connected along the circumferential direction of the inner wall of the orienting member 1, so that a user can not only rotate the orienting member 1 clockwise to switch the engaging member 31 between the orienting portion 11 and the releasing portion 12 to realize the locking or the releasing, but also can rotate the orienting member 1 counterclockwise to switch the engaging member 31 between the orienting portion 11 and the releasing portion 12 to realize the locking or the releasing portion 12 The lock or release is convenient for the user to operate, preferably, the orientation portion 11 is an orientation concave, the release portion 12 is a release concave, the guide track 13 is an inclined track with an inclined surface, and the manufacturer can adjust the lock or release according to the actual situation, so the lock or release is not limited to this. In the present embodiment, the orientation portion 11 is provided with three, the guide rail 13 is provided with six, and the unlocking portion 12 is provided with three, that is, the present embodiment is sequentially connected in the order of the orientation portion 11, the guide rail 13, the unlocking portion 12, the guide rail 13, the orientation portion 11, the guide rail 13, the unlocking portion 12, and the guide rail 13, but is not limited thereto.

Referring to fig. 4 and 7, the orientation pin 3 includes a pin body 33, a second elastic member 34 and a housing 32, the housing 32 is hollow, the housing 32 is slidably sleeved outside the pin body 33, the second elastic member 34 elastically presses between the housing 32 and the pin body 33, so that the pin body 33 always tends to extend out of the housing 32, the housing 32 is provided with a sliding hole 321, the pin body 33 is convexly provided with a protrusion 331, the protrusion 331 is slidably provided in the sliding hole 321, the protrusion 331 enables the pin body 33 to slide up and down within a certain distance range relative to the housing 32 under the limit of the sliding hole 321, and the pin body 33 can elastically extend and retract relative to the housing 32 by matching with the elastic force provided by the second elastic member 34, so that the locking is more stable, and damage to parts caused by misalignment between the pin body 33 and the orientation hole 202 during the orientation operation can be avoided. Preferably, the sliding holes 321 are symmetrically formed on two sides of the housing 32, and the protrusions 331 are symmetrically formed on two sides of the pin body 33, so that the pin body 33 is more uniformly stressed, and the pin body 33 can slide smoothly and stably relative to the housing 32.

In summary, referring to fig. 1 to 8, a detailed description will be made of the locking process of the stroller frame 100 of the present invention:

when the wheel 30 needs to be oriented, the orienting member 1 is rotated, so that the engaging member 31 extending into the limiting channel 4 and engaged with the releasing portion 12 slides along the guiding track 13 and is finally engaged with the orienting portion 11, the engaging member 31 of the orienting pin 3 slides upwards under the elastic action of the first elastic member 5, after the orienting member 1 is rotated to a certain position relative to the connecting seat 2, if the pin body 33 is not aligned with the orienting hole 202, the second spring 34 is in a compressed state, and after the wheel 30 is rotated to the certain position, that is, when the pin body 33 is aligned with the orienting hole 202, the second spring 34 is reset to push the pin body 33 to slide upwards and engage with the orienting hole 202, so that the wheel 30 cannot rotate relative to the vehicle foot 20 to achieve the orientation (the state is shown in fig. 6 to 7); when the wheel 30 needs to be unlocked, the directional member 1 is rotated, so that the engaging member 31 extending into the limiting channel 4 and engaged with the directional portion 11 slides along the guiding track 13 and is finally engaged with the unlocking portion 12, in the process, the directional member 1 rotates relative to the connecting seat 2, and since the unlocking portion 12 is located below the directional portion 11, the engaging member 31 of the directional pin 3 slides downward against the elastic force of the first elastic member 5, so that the directional pin 3 slides downward and exits the directional hole 202 at the vehicle foot 20, and the wheel 30 can rotate relative to the vehicle foot 20 to realize directional unlocking.

Referring to fig. 1-8, since the stroller frame 100 of the present invention includes the stroller frame 20, the wheel 30 and the wheel alignment mechanism 10, the wheel 30 is installed at the bottom of the connecting seat 2, the connecting seat 2 is pivoted to the stroller frame 20, the bottom of the stroller frame 20 is provided with the alignment hole 202, the alignment member 1 of the wheel alignment mechanism 10 is rotatably disposed on the connecting seat 2, the alignment member 1 has the alignment portion 11 and the release portion 12, the alignment pin 3 has the engaging member 31, the rotation of the alignment member 1 enables the engaging member 31 of the alignment pin 3 to be switched back and forth between the alignment portion 11 and the release portion 12 and to be engaged with the alignment portion 11 and the release portion 12, so that the alignment pin 3 is slidably extended and retracted relative to the connecting seat 2 to be inserted into or withdrawn from the alignment hole 202 of the stroller frame 20, thereby achieving the locking or unlocking of the wheel 30, and having a simple structure and.

Referring to fig. 9 to 16, a specific structure of a stroller frame according to a second embodiment of the present invention is shown, and a stroller frame 200 according to the second embodiment is different from the stroller frame 100 according to the first embodiment in the following points:

first, in the first embodiment, the limiting member 22 extends outward to form a limiting edge 222, and the directional member 1 has a groove 14 matching with the limiting edge 222; in the second embodiment, please refer to fig. 10, the position-limiting member 22 has a plate-shaped structure and does not have a position-limiting edge 222 extending outward, and correspondingly, the orientation member 1 has a plate-shaped structure and does not have a groove 14 matching with the position-limiting groove 222.

Secondly, in the second embodiment, please refer to fig. 10 and fig. 12 to fig. 13, the orientation pin 3 has an accommodating groove 35 for accommodating the first elastic element 5, the accommodating groove 35 is located at the bottom of the orientation pin 3, the accommodating groove 35 is a cylindrical groove structure, but not limited thereto, the accommodating groove 35 can position the first elastic element 5 well; in the first embodiment, the orientation pin 3 does not have the receiving groove 35, and the first elastic element 5 directly presses against the bottom end surface of the orientation pin 3.

Thirdly, in the first embodiment, the orientation portion 11, the lock release portion 12, the guide track 13, the inner wall of the orientation member 1 and the outer wall of the connection seat 2 together enclose a limit channel 4, the limit channel 4 is located outside the cavity 25, the limit channel 4 and the cavity 25 are arranged in a staggered manner and are communicated with each other, the limit channel 4 and the cavity 25 together form a ladder shape, correspondingly, the clamping member 31 is a protruding structure located outside the orientation pin 3, the protruding structure extends into the limit channel 4, and the protruding structure is a cylindrical protruding button, but is not limited thereto; in a second embodiment, please refer to fig. 12 to 13, the limiting channel 4 and the cavity 25 are oppositely disposed and are spliced together to form a tubular structure, the directional portion 11 and the lock releasing portion 12 extend into the tubular structure, the engaging member 31 is a boss structure located outside the directional pin 3, the boss structure and the directional pin 3 are both in a step-like structure, and both the boss structure and the directional pin 3 are slidably disposed in the tubular structure.

Fourthly, in the first embodiment, the orientation pin 3 has a sliding hole 321 and a second elastic element 34 therein, and the pin body 33 can slide relative to the housing 32 through the sliding hole 321 and the second elastic element 34; in a second embodiment, please refer to fig. 13, the inside of the orientation pin 3 is a solid structure, and the pin body 33 cannot slide relative to the housing 32;

fifth, in the first embodiment, the orientation portion 11 is an orientation recess, and the lock release portion 12 is a lock release recess; in the second embodiment, referring to fig. 14 to 15, the orientation portion 11 is an orientation plane, and the lock release portion 12 is a lock release plane.

The locking principle and the advantageous effects of the stroller frame 200 of the second embodiment are substantially the same as those of the stroller frame 100 of the first embodiment, and thus will not be described again.

Referring to fig. 17 to 22, a specific structure of a stroller frame according to a third embodiment of the present invention is shown, and a stroller frame 300 according to the third embodiment is different from the stroller frame 100 according to the first embodiment in the following points:

19. in the first embodiment, the orientation portion 11 is an orientation recess, and the lock release portion 12 is a lock release recess; in the third embodiment, the orientation portion 11, the lock release portion 12 and the guide rail 13 form an inclined plane together, that is, the orientation portion 11, the lock release portion 12 and the guide rail 13 are all inclined plane structures, the engaging member 31 is slidably disposed on the inclined plane, for positioning, the positioning structure 6 is disposed between the connecting seat 2 and the orientation member 1, and the engaging member 31 is positioned on the orientation portion 11 and the lock release portion 12 by the positioning structure 6. Specifically, the positioning structure 6 includes at least a positioning portion 61, a first matching portion 62 and a second matching portion 63, the positioning portion 61 is disposed on the positioning member 1, the first matching portion 62 and the second matching portion 63 are disposed on the connecting seat 2 at intervals, the positioning portion 61 and the first matching portion 62 cooperate to position the engaging member 31 on the positioning portion 11, so as to achieve locking (as shown in fig. 19), and the positioning portion 61 and the second matching portion 63 cooperate to position the engaging member 31 on the releasing portion 12, so as to achieve releasing locking (as shown in fig. 18). The positioning portions 61 are symmetrically disposed on the positioning member 1, the first matching portions 62 are symmetrically disposed on the connecting seat 2, and the second matching portions 63 are symmetrically disposed on the connecting seat 2. In this embodiment, the positioning portion 61, the first matching portion 62 and the second matching portion 63 are both provided with two, the two positioning portions 61 are symmetrically arranged, the two first matching portions 62 are symmetrically arranged, and the two second matching portions 63 are symmetrically arranged, so that the movement between the components is smoother and more stable. Preferably, the positioning portion 61 is a protruding structure, the first matching portion 62 and the second matching portion 63 are matching holes matched with the protruding structure, and the protruding structure is engaged with the matching holes, so that the positioning portion 61 and the first matching portion 62 are positioned by engaging, the card withdrawing between the positioning portion 61 and the first matching portion 62 can be realized by rotating the directional component 1, the positioning portion 61 and the second matching portion 63 are positioned by engaging, and the card withdrawing between the positioning portion 61 and the second matching portion 63 can be realized by rotating the directional component 1. For smoother movement, the engaging member 31 has a slope structure matching with the slope. The pushing member 15 is disposed on the directional member 1, and the pushing member 15 drives the directional member 1 to rotate, so as to improve the convenience of operation, it can be understood that the pushing member 15 may be disposed on the directional member 1 in any embodiment according to practical situations.

The locking principle and the advantageous effects of the stroller frame 300 of the third embodiment are substantially the same as those of the stroller frame 100 of the first embodiment, and thus will not be described in detail herein.

The above disclosure is only a preferred embodiment of the present invention, and certainly, the scope of the present invention should not be limited thereto, and therefore, the scope of the present invention is not limited to the above embodiments.

Claims (24)

1. A wheel orientation mechanism is characterized by comprising an orientation piece, a connecting seat and an orientation pin, wherein the orientation pin is arranged on the connecting seat in a sliding mode, the orientation piece is rotatably arranged on the connecting seat and is provided with an orientation part and a lock release part, the orientation pin is provided with a clamping piece, and when the orientation piece rotates relative to the connecting seat, the clamping piece can be switched between the orientation part and the lock release part and is clamped on the orientation part or the lock release part, so that the orientation pin stretches relative to the connecting seat.

2. The wheel alignment mechanism as claimed in claim 1, wherein the connecting seat includes a seat body and a retaining member covering the seat body, the retaining member defines a through hole for the alignment pin to extend through, and the alignment member is rotatably sleeved on the seat body.

3. The wheel alignment mechanism of claim 2, wherein the retaining member extends outwardly to form a retaining edge, and the alignment member has a groove that mates with the retaining edge.

4. The wheel alignment mechanism of claim 1, further comprising a first resilient member providing a resilient force that extends the alignment pin out of the attachment socket.

5. The wheel alignment mechanism of claim 4, wherein the alignment pin has a receiving slot that receives the first resilient member.

6. The wheel alignment mechanism as claimed in claim 1, wherein the alignment pin includes a pin body and a housing slidably received outside the pin body, the pin body has a tendency to extend out of the housing, the housing is formed with a sliding hole, the pin body is provided with a protrusion, and the protrusion is slidably disposed in the sliding hole.

7. The wheel alignment mechanism as claimed in claim 6, wherein the sliding holes are symmetrically disposed on both sides of the housing, and the protrusions are symmetrically disposed on both sides of the pin body.

8. The wheel alignment mechanism of claim 6, wherein the alignment pin further comprises a second resilient member resiliently urged between the housing and the pin body.

9. The wheel alignment mechanism of claim 1, wherein the attachment base has a cavity formed therein, and the alignment pin is slidably disposed in the cavity.

10. The wheel alignment mechanism as claimed in claim 9, wherein the alignment member further has a guide rail communicating the alignment portion and the release portion, the engaging member sliding relative to the guide rail.

11. The wheel alignment mechanism as claimed in claim 10, wherein the alignment member is sleeved on the connecting seat, and a limiting channel is formed between the outer wall of the connecting seat, the alignment portion, the releasing portion, the guide rail and the inner wall of the alignment member.

12. The wheel alignment mechanism of claim 11, wherein the catch is a raised structure located on the outside of the alignment pin, the raised structure extending into the retaining channel.

13. The wheel alignment mechanism of claim 12, wherein the raised structures are columnar structures or block structures or sheet structures.

14. The wheel alignment mechanism of claim 11, wherein the catch is a boss structure located outboard of the alignment pin, the boss structure and the alignment pin together being in a stepped configuration.

15. The wheel alignment mechanism as claimed in claim 10, wherein the alignment portion and the release portion are disposed high and low, and the alignment portion is located above the release portion.

16. The wheel alignment mechanism as claimed in claim 15, wherein the alignment portion is an alignment recess or an alignment flat and the release portion is a release recess or a release flat.

17. The wheel alignment mechanism as claimed in claim 11, wherein at least one of the alignment portion and the release portion is provided, the alignment portion and the release portion are spaced apart from each other, and the alignment portion, the release portion and the guide rail are circumferentially connected along an inner wall of the alignment member.

18. The wheel alignment mechanism as claimed in claim 10, wherein the alignment portion, the release portion and the guide rail together form an inclined surface, the engaging member is slidably disposed on the inclined surface, and a positioning structure is disposed between the connecting seat and the alignment member, so that the engaging member is positioned between the alignment portion and the release portion by the positioning structure.

19. The wheel alignment mechanism as claimed in claim 18, wherein the positioning structure comprises at least one positioning portion, a first mating portion and a second mating portion, the positioning portion is disposed on the alignment member, the first mating portion and the second mating portion are disposed on the connecting base at a distance, the positioning portion and the first mating portion cooperate to position the engaging member on the alignment portion, and the positioning portion and the second mating portion cooperate to position the engaging member on the release portion.

20. The wheel alignment mechanism of claim 19, wherein the positioning portion is a raised structure and the first and second mating portions are mating holes that mate with the raised structure.

21. The wheel alignment mechanism as claimed in claim 19, wherein the positioning portions are symmetrically disposed on the alignment member, the first mating portions are symmetrically disposed on the connecting seat, and the second mating portions are symmetrically disposed on the connecting seat.

22. The wheel alignment mechanism of claim 18, wherein the catch is a ramp structure that engages the ramp.

23. The wheel alignment mechanism as claimed in claim 1, wherein the alignment member has a pushing member, and the pushing member drives the alignment member to rotate.

24. A stroller frame, the stroller frame comprising a leg and a wheel, and further comprising the wheel alignment mechanism of any one of claims 1 to 23, wherein the wheel is mounted on the bottom of the connecting base, the connecting base is pivotally connected to the leg, the bottom of the leg is provided with an alignment hole, and the alignment pin is inserted into or withdrawn from the alignment hole of the leg.

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