CN113135216A

CN113135216A - Baby stroller and seat height adjusting mechanism thereof

Info

Publication number: CN113135216A
Application number: CN202010050146.2A
Authority: CN
Inventors: 易小龙; 汪尔学
Original assignee: Wonderland Switzerland AG
Current assignee: Wonderland Switzerland AG
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2021-07-20
Also published as: TW202128482A; WO2021144406A1; TWI793497B

Abstract

The invention discloses a seat height adjusting mechanism which is arranged on a frame of a cart and comprises a bearing seat used for being assembled with a seat. The bearing seat is arranged on the frame in a sliding way along the vertical direction of the frame, and the height position of the seat on the bearing seat on the frame is adjusted by the vertical sliding of the bearing seat relative to the frame. The seat height adjusting mechanism can adjust the height position of the seat on the bearing seat on the frame through the up-and-down sliding of the bearing seat relative to the frame, thereby better meeting the requirements of children with different heights. In addition, the invention also discloses a cart with the seat height adjusting mechanism.

Description

Baby stroller and seat height adjusting mechanism thereof

Technical Field

The invention relates to the field of infant products, in particular to a baby stroller and a seat height adjusting mechanism thereof.

Background

With the continuous development of economy and the continuous progress of science and technology, abundant material consumer goods are provided for the life of people, and the baby stroller is one of a plurality of material consumer goods.

The baby stroller is convenient for a user to take care of a baby when the baby stroller is used, so that the baby stroller is sought by people.

However, in the conventional stroller, since the position of the seat on the frame is not adjustable, the height of the seat on the frame cannot be adjusted according to the height of the infant, and thus the conventional stroller has poor versatility.

Therefore, there is a need for a stroller and a seat height adjusting mechanism thereof that can flexibly adjust the height position of the seat according to the height of the baby.

Disclosure of Invention

An object of the present invention is to provide a seat height adjusting mechanism capable of flexibly adjusting the height position of a seat according to the height change of an infant.

Another object of the present invention is to provide a stroller in which the height position of a seat can be flexibly adjusted according to the height of an infant.

In order to achieve the above object, the seat height adjusting mechanism of the present invention is disposed on a frame of a stroller and includes a seat for engaging with a seat. The bearing seat is arranged on the frame in a sliding way along the vertical direction of the frame, and the height position of the seat on the bearing seat on the frame is adjusted by the vertical sliding of the bearing seat relative to the frame.

Preferably, the seat height adjusting mechanism of the present invention further includes a locking member, a lock releasing operation member linked with the locking member, and a fixing member mounted on the frame, the carrying seat is slidably mounted on the fixing member, the locking member is mounted on one of the fixing member and the carrying seat and has at least a locking position and a lock releasing position, the other of the fixing member and the carrying seat is at least provided with two segment position locking portions spaced apart from each other along the sliding direction of the carrying seat, the locking member is in the locking position when selectively locked with any segment position locking portion, and the lock releasing operation member links the locking member to disengage from the locking with any segment position locking portion, so that the locking member is in the lock releasing position.

Preferably, the seat height adjusting mechanism of the present invention further includes at least two locking members spaced apart from each other in a sliding direction of the carrying seat, a lock releasing operation member linked with all the locking members simultaneously, and a fixing member mounted on the frame, the carrying seat is slidably mounted on the fixing member, the locking member is mounted on one of the fixing member and the carrying seat and has at least a locking position and a lock releasing position, the other of the fixing member and the carrying seat is provided with a segment locking portion, any one of the locking members is in the locking position when selectively locked with the segment locking portion, the lock releasing operation member links all the locking members to perform a lock releasing movement together, and any one of the locking members is released from being locked with the segment locking portion and is in the lock releasing position.

Preferably, the seat height adjusting mechanism of the present invention further includes a return elastic member, the return elastic member is disposed on the locking member and the carrying seat or the fixing member having the locking member, and the return elastic member constantly has a tendency to drive the locking member to switch from the unlocking position to the locking position.

Preferably, at least one of the locking member and the segment locking member has an inclined structure inclined relative to the sliding direction of the bearing seat, and the locking member is switched from the locking position to the unlocking position by the inclined structure in the upward sliding process of the bearing seat.

Preferably, the inclined structure of the locking member mounted on the bearing seat is located on the upper side of the locking member, and correspondingly, the inclined structure of the segment locking portion formed on the fixing member is located on the upper side of the segment locking portion; or the inclined structure of the locking piece arranged on the fixing piece is positioned at the lower side of the locking piece, and correspondingly, the inclined structure of the section matching locking part arranged on the bearing seat is positioned at the lower side of the section matching locking part.

Preferably, the locking member is disposed in a sliding manner, and the sliding direction of the locking member is staggered with the sliding direction of the bearing seat.

Preferably, the lock release operating member and the locking member are integrated together.

Preferably, the lock release operating member and the lock member are independent of each other.

Preferably, the seat height adjusting mechanism of the present invention further includes a flexible pulling member, and the lock releasing operation member is linked with the locking member through the pulling member.

Preferably, a first end of the towing member is connected to a lock release operating member mounted on the frame, and a second end of the towing member is connected to a lock member mounted on the fixing member.

Preferably, the seat height adjusting mechanism of the present invention further includes a turntable pivotally connected to the frame, the turntable has a first mounting portion and a second mounting portion distributed on two sides of a center line of the turntable, the unlocking operation member is connected to the first mounting portion, and the first end of the traction member is connected to the second mounting portion.

Preferably, the seat height adjusting mechanism of the present invention further includes a push-pull rod, the push-pull rod is slidably disposed on the fixing member or the load-bearing seat along the sliding direction of the load-bearing seat, the second end of the traction member is mounted on the push-pull rod, and the push-pull rod is linked with the locking member.

Preferably, the first end of the traction member is connected to a lock release operation member mounted on the seat, and the second end of the traction member is connected to a lock member mounted on the load-bearing seat.

Preferably, the seat height adjusting mechanism further includes a transmission member movably disposed on the seat, the transmission member is linked with the lock release operation member, and the first end of the traction member is mounted on the transmission member.

Preferably, the lock releasing operation member and the transmission member are slidably disposed on the seat, and the sliding directions of the lock releasing operation member and the transmission member are crossed.

Preferably, the locking member is pivotally arranged, and the lock releasing operation member and the locking member are integrated together.

Preferably, the locking member and the unlocking operation member are pivotally mounted on the carrying seat or the fixing member, and the locking member is linked to perform the unlocking movement by the pivotal swing of the unlocking operation member.

Preferably, the segment locking portion is a slot structure.

Preferably, the seat is pivotally connected to the frame about a pivot center line, the seat has at least a first set of joints and a second set of joints spaced apart from each other along a rotation direction of the seat, a distance from the first set of joints to the pivot center line is different from a distance from the second set of joints to the pivot center line, and the seat is detachably mounted to the first set of joints or the second set of joints.

Preferably, the central angle between the first set of joints and the second set of joints is 90 degrees.

To achieve the above object, the stroller of the present invention comprises a frame, a seat and a seat height adjusting mechanism. The frame comprises a front foot, a rear foot and a driver, and the front foot, the rear foot and the driver can be unfolded and folded; the seat height adjusting mechanism comprises a bearing seat, the bearing seat is arranged on the frame in a sliding manner along the vertical direction of the frame, the seat is assembled on the bearing seat, and the height position of the seat on the bearing seat on the frame is adjusted by means of the vertical sliding movement of the bearing seat relative to the frame.

Preferably, the load-bearing seat is slidably disposed on the rider, the front leg or the rear leg along the vertical direction of the frame.

Preferably, the seat height adjusting mechanism further comprises a locking member, a lock releasing operation member linked with the locking member, and a fixing member mounted on the frame, the carrying seat is slidably disposed on the fixing member, the locking member is mounted on one of the fixing member and the carrying seat and has at least a locking position and a lock releasing position, the other of the fixing member and the carrying seat is at least provided with two section position matching locking portions spaced apart from each other along the sliding direction of the carrying seat, the locking member is in the locking position when selectively locked with any section position matching locking portion, and the lock releasing operation member links the locking member to be disengaged from any section position matching locking portion so that the locking member is in the lock releasing position.

Preferably, the seat height adjusting mechanism further comprises at least two locking members spaced apart from each other along the sliding direction of the carrying seat, a lock releasing operation member simultaneously linked with all the locking members, and a fixing member mounted on the frame, the carrying seat is slidably mounted on the fixing member, the locking member is mounted on one of the fixing member and the carrying seat and has at least a locking position and a lock releasing position, the other of the fixing member and the carrying seat is provided with a segment locking portion, any one of the locking members is in the locking position when selectively locked with the segment locking portion, the lock releasing operation member links all the locking members to perform lock releasing movement together, and any one of the locking members is disengaged from the segment locking portion and is in the lock releasing position.

Preferably, the seat height adjusting mechanism further comprises a return elastic member, the return elastic member is disposed on the locking member and the carrying seat or the fixing member having the locking member, and the return elastic member constantly has a tendency to drive the locking member to switch from the unlocking position to the locking position.

Preferably, the lock release operation member and the lock member are integrated together, and the seat and the carrying seat are detachably assembled.

Preferably, the seat height adjusting mechanism further comprises a flexible traction piece, the unlocking operation piece and the locking piece are independent from each other, and the unlocking operation piece is linked with the locking piece through the traction piece.

Preferably, the first end of the pulling member is connected to a lock release operating member mounted on the rider, and the second end of the pulling member is connected to a locking member mounted on the fixed member.

Preferably, the seat height adjusting mechanism further comprises a turntable pivoted to the rider, the turntable has a first mounting portion and a second mounting portion distributed on two sides of a center line of the turntable, the unlocking operation member is connected with the first mounting portion, a first end of the traction member is connected with the second mounting portion, and the seat is detachably connected with the bearing seat.

Preferably, the seat height adjusting mechanism further comprises a push-pull rod, the push-pull rod is slidably disposed on the fixing member or the bearing seat along the sliding direction of the bearing seat, the second end of the traction member is mounted on the push-pull rod, and the push-pull rod is linked with the locking member.

Preferably, the seat height adjusting mechanism further comprises a transmission member movably disposed on the seat, the transmission member is linked with the lock release operation member, a first end of the traction member is mounted on the transmission member, and a second end of the traction member is connected with the locking member mounted on the bearing seat.

Compared with the prior art, the frame is arranged on the bearing seat in a sliding manner along the vertical direction of the frame, so that the height position of the seat on the bearing seat on the frame is adjusted by the vertical sliding of the bearing seat relative to the frame, and the height position of the seat on the bearing seat on the frame can be adjusted flexibly by the vertical sliding of the bearing seat relative to the frame according to the height of a baby, thereby being convenient for the adjustment operation of an operator on one hand and improving the universality on the other hand.

Drawings

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

Fig. 2 is a perspective view of the stroller of fig. 1 at another angle.

Fig. 3 is a perspective view of the stroller of fig. 1 shown with the seat hidden.

Fig. 4 is a perspective view of the stroller of fig. 2 shown with the seat hidden.

Fig. 5 is a perspective view of a fixing member in the stroller of fig. 1.

Fig. 6 is a perspective view of the locking member and the unlocking operation member of the stroller shown in fig. 1.

Fig. 7 is a schematic view of the stroller of fig. 1 cut away and showing the internal structure of the locking member in the locked position with the section locking portion.

Fig. 8 is a schematic view of the stroller shown in fig. 1 cut away and showing the internal structure of the locking member in a unlocked position when unlocked from the section locking portion.

Fig. 9 is a perspective view of a stroller in accordance with a second embodiment of the present invention.

Fig. 10 is a perspective view of the stroller of fig. 9 at another angle.

Fig. 11 is a perspective view of the stroller of fig. 9 at a further angle.

Fig. 12 is a perspective view of a stroller according to a third embodiment of the present invention with a front leg portion hidden from view.

Fig. 13 is a perspective view of the stroller of fig. 12 at another angle.

Fig. 14 is a perspective view of the stroller of fig. 12 at a further angle.

Fig. 15 is a perspective view of the stroller of fig. 14 shown with the seat hidden.

Fig. 16 is a perspective view of the stroller of fig. 12 with the carrying seat, the locking member and the release operating member mounted together.

Fig. 17 is a perspective view of a stroller in accordance with a fourth embodiment of the present invention.

Fig. 18 is a schematic view of the release operation member, the swing plate, the traction member, the push-pull rod, and the locking member of the stroller shown in fig. 17.

Fig. 19 is a perspective view of the stroller of fig. 17 shown with the rear legs hidden.

Fig. 20 is an enlarged view of a portion a in fig. 19.

Fig. 21 is a perspective view of a stroller according to a fifth embodiment of the present invention when a seat is coupled to a first joint.

Fig. 22 is a perspective view of a stroller according to a fifth embodiment of the present invention, in which a seat is coupled to a second head set.

Fig. 23 is a perspective view of the stroller of fig. 21 with the seat hidden.

Fig. 24 is a perspective view of the stroller of fig. 22 shown with the seat hidden.

Fig. 25 is a schematic elevational view of a stroller in accordance with a sixth embodiment of the present invention.

Fig. 26 is a perspective view of the stroller of fig. 25 at another angle.

Fig. 27 is a perspective view of the stroller of fig. 25 at a further angle.

Fig. 28 is a perspective view of the stroller of fig. 25 shown with the seat hidden.

Fig. 29 is a perspective view of the stroller according to the sixth embodiment of the present invention, in which the release operation member, the transmission member, and the traction member are installed together.

Fig. 30 is a perspective view of a stroller according to a sixth embodiment of the present invention, in which a locking member is locked to a section locking portion.

Fig. 31 is a perspective view of a stroller according to a sixth embodiment of the present invention, showing a locking member and a locking portion.

Fig. 32 is an exploded perspective view of the stroller shown in fig. 30.

Fig. 33 is an exploded perspective view of the stroller shown in fig. 31.

Detailed Description

In order to explain technical contents and structural features of the present invention in detail, the following description is made with reference to the embodiments and the accompanying drawings.

Referring to fig. 1 to 8, a stroller 100a according to a first embodiment of the present invention includes a frame 10, a seat 20 and a seat height adjusting mechanism 30. The frame 10 comprises a front foot 11, a rear foot 12 and a rider 13, and the front foot 11, the rear foot 12 and the rider 13 can be unfolded and folded to facilitate the folding operation of the frame 10; preferably, the rider 13 is pivotally connected to the rear leg 12 and the front leg 11 in sequence, so that the pivotal connection between the rider 13 and the front leg 11 is located at the front lower portion of the pivotal connection between the rider 13 and the rear leg 12, and the pivotal connection between the front leg 11, the rear leg 12 and the rider 13 is simplified under the condition of ensuring the convenient folding operation of the frame 10, but not limited thereto. The seat height adjusting mechanism 30 includes a seat 31, the seat 31 is movably disposed on the frame 10, and the seat 20 is assembled on the seat 31 such that the seat 20 is assembled on the frame 10 through the seat 31, and therefore, the seat 31 is movable relative to the frame 10 to adjust the height position of the seat 20 on the seat 31 on the frame 10. Specifically, in the embodiment, the carrying seat 31 is slidably disposed on the rider 13 along the up-down direction of the frame 10, so that the carrying seat 31 can slide up and down along the rider 13, and therefore, in the process of sliding the carrying seat 31 up and down along the rider 13, the carrying seat 31 can slide up and down relative to the frame 10, so as to adjust the height position of the seat 20 on the carrying seat 31 on the frame 10. It is understood that, according to actual needs, the load-bearing seat 31 can also be slidably disposed on the front leg 11 or the rear leg 12 along the vertical direction of the frame 10, so the invention is not limited thereto. When the frame 10 does not include the front leg 11, the rear leg 12 and the rider 13, the seat 31 is slidably mounted on the frame 10 along the vertical direction of the frame 10, and the height position of the seat 20 on the seat 31 on the frame 10 is adjusted by the vertical sliding movement of the seat 31 relative to the frame 10, which is not limited to the above example. More specifically, the following:

as shown in fig. 3 to 8, in order to ensure the positional reliability of the adjusted load-bearing seat 31 on the rider 13 and facilitate the adjustment operation of the load-bearing seat 31 by the operator, the seat height adjusting mechanism 30 further includes a locking member 32, a lock release operation member 33 linked with the locking member 32, and a fixing member 34 attached to the rider 13. The bearing seat 31 is slidably disposed on the fixing member 34, so that the bearing seat 31 is slidably disposed on the fixing member 34 to achieve the purpose of being slidably disposed on the rider 13; preferably, the carrying seat 31 is further matched with the fixing member 34 in a sleeving manner, and the fixing member 34 is a straight rod structure, so as to increase the sliding reliability between the carrying seat 31 and the fixing member 34, but not limited thereto. The locking member 32 is mounted on the carrier 31, the carrier 31 provides support for the locking member 32, the locking member 32 has at least a locking position as shown in fig. 7 and a releasing position as shown in fig. 8, and the fixing member 34 has at least two segment locking portions 35 spaced apart from each other along a sliding direction (indicated by a double-headed arrow B in fig. 5) of the carrier 31. The locking member 32 is in the locked position when selectively locked with any one of the segment locking portions 35, as shown in fig. 7; the unlocking operation piece 33 interlocks the locking piece 32 to be unlocked from any one of the locking sections 35, so that the locking piece 32 is in the unlocking position, which is shown in fig. 8; for example, the segment locking portion 35 is a slotted structure, such as a groove, a blind hole or a through hole, whose shape matches the shape of the locking member 32, but this is well known in the art and will not be described in detail herein.

As shown in fig. 7 and 8, in order to automatically switch the locking member 32 to the locking position under the normal state, the seat height adjusting mechanism 30 further includes a return elastic member 36, and the return elastic member 36 always has a tendency to drive the locking member 32 to switch from the unlocking position to the locking position; specifically, since the locking member 32 is installed on the bearing seat 31, the elastic restoring member 36 is installed on the locking member 32 and the bearing seat 31 having the locking member 32, so as to simplify the installation relationship among the elastic restoring member 36, the locking member 32 and the bearing seat 31, when the locking member 32 is installed on the fixing member 34, the elastic restoring member 36 is installed on the locking member 32 and the fixing member 34, so as not to be limited thereto; for example, the locking member 32 is disposed in a sliding manner, and the sliding direction (indicated by the double arrow D in fig. 7 and 8) of the locking member 32 is staggered with the sliding direction (indicated by the double arrow B in fig. 7 and 8) of the carrier 31, so that the design can simplify the thickness occupation of the locking member 32 on the carrier 31. Since the locking member 32 is disposed in a sliding manner, the elastic return member 36 is selected to be a compression spring or an extension spring, so as to further simplify the installation relationship among the elastic return member 36, the locking member 32 and the carrying seat 31, but not limited thereto. It can be understood that, according to the actual requirement, the locking member 32 can be further installed at the fixing member 34, and correspondingly, the carrying seat 31 is provided with at least two segment-position locking portions 35, which can achieve the purpose of adjusting and locking the segment position of the carrying seat 31, but is not limited thereto. The fixing member 34 is mounted on the front leg 11 of the frame 10 when the seat 31 is slidably mounted on the front leg 11, and the fixing member 34 is mounted on the rear leg 11 when the seat 31 is slidably mounted on the rear leg 11.

As shown in fig. 5 to 8, the locking element 32 has an inclined structure 321 inclined with respect to the sliding direction of the bearing seat 31, the step-locking portion 35 also has an inclined structure 351 inclined with respect to the sliding direction of the bearing seat 31, and the locking element 32 is switched from the locking position to the unlocking position by the

inclined structures

321 and 351 during the upward sliding process of the bearing seat 31, so that the purpose of the design is as follows: when the carrying seat 31 is adjusted upward, the user does not need to operate the unlocking operation piece 33 at this time, and only needs to pull the seat 20 upward directly, so as to achieve the purpose of adjusting the carrying seat 31 upward, because the inclined structure 321 of the locking piece 32 and the inclined structure 351 of the segment locking part 35 are pushed against each other in the upward sliding process of the carrying seat 31, so that the locking piece 32 overcomes the elastic force of the reset elastic piece 36 to slide and retract, and the locking piece 32 and the aligned segment locking part 35 are unlocked, thereby allowing the carrying seat 31 to be adjusted upward. Specifically, the inclined structure 321 of the locking member 32 mounted on the carrier 31 is located on the upper side of the locking member 32, and correspondingly, the inclined structure 351 of the step locking portion 35 formed on the fixing member 34 is located on the upper side of the step locking portion 35, as shown in fig. 7 or fig. 8. In addition, according to actual needs, the inclined structure 321 of the locking member 32 mounted on the fixing member 34 may be designed to be located under the locking member 32, and correspondingly, the inclined structure 351 of the step locking portion 35 formed on the bearing seat 31 may be designed to be located under the step locking portion 351, but the invention is not limited thereto; in addition, according to the actual requirement, the locking member 32 or the segment locking portion 35 can have an inclined structure, so that the purpose that the user can adjust the carrying seat 31 upward only by directly pulling the upper end of the seat 20 upward without operating the release operation member 33 can be achieved, and the invention is not limited thereto.

As shown in fig. 6 and 7, the lock release operation member 33 and the locking member 32 are integrally formed, so that the lock release operation member 33 is designed to release the lock of the locking member 32 at a short distance, and the structures of the lock release operation member 33 and the locking member 32 are simplified; since the release operation member 33 and the locking member 32 are integrally formed, the release operation member 33 is mounted on the carrier 31 through the locking member 32, but not limited thereto. It is understood that, according to the actual requirement, the locking member 32, which is integrated with the unlocking operation member 33, may be pivotally arranged, so that the unlocking operation member 33 and the locking member 32 are pivotally arranged together relative to the carrying seat 31 to achieve the purpose of locking or unlocking between the locking member 32 and the segment positioning locking portion 35, but not limited thereto. The seat 20 and the carrier 31 of the stroller 100a of the first embodiment can be detachably assembled to each other for the convenience of the user to assemble and disassemble the seat 20, but the seat 20 and the carrier 31 can be made non-detachable according to actual needs, and the invention is not limited thereto.

The operation of the stroller 100a according to the first embodiment of the present invention will be described with reference to fig. 1 to 8: when the height position of the seat 20 on the frame 10 needs to be adjusted upwards, a user directly pulls the seat 20 upwards, so that the acting force acting on the seat 20 is transmitted to the load-bearing seat 31, and the load-bearing seat 31 has a tendency of sliding upwards; the bearing seat 31 with the upward sliding tendency slides and retracts against the elastic force of the elastic restoring member 36 under the mutual pushing action of the inclined structure 321 of the locking member 32 and the inclined structure 351 of the segment locking portions 35, so that the locking member 32 is released from the segment locking portion 35 aligned with the locking member 32, and the bearing seat 31 together with the seat 20 is allowed to be adjusted upward until the locking member 32 is aligned with another segment locking portion 35 again, and the locking member 32 is automatically locked with the aligned segment locking portion 35 under the elastic restoring force of the elastic restoring member 36, so as to fix the position of the bearing seat 31 on the rider 13 after the position adjustment. When the height position of the seat 20 in the vehicle frame 10 is to be adjusted downward, the lock release operation member 33 is operated by the user, and the lock release operation member 33 together with the lock member 32 is released from the aligned stepped locking portions 35 against the elastic force of the return elastic member 36, thereby allowing the seat 31 together with the seat 20 to be adjusted downward.

Referring to fig. 9 to 11, a stroller 100b according to a second embodiment of the present invention has substantially the same structure as the stroller 100a according to the first embodiment, except that the seat height adjusting mechanisms 30 are slightly different from each other in the installation position of the frame 10, which is as follows:

in the second embodiment, the load-bearing seat 31 of the seat height adjusting mechanism 30 is slidably disposed at the rear leg 12 of the frame 10, specifically, the fixing member 34 of the seat height adjusting mechanism 30 is mounted at the rear leg 12, such that the load-bearing seat 31 is slidably disposed at the fixing member 34 of the rear leg 12; in the first embodiment, the loading seat 31 of the seat height adjusting mechanism 30 is slidably disposed at the rider 13 of the frame 10, and specifically, the fixing member 34 of the seat height adjusting mechanism 30 is mounted at the rider 13, so that the loading seat 31 is slidably disposed at the fixing member 34 of the rider 13.

Although the seat height adjusting mechanisms 30 of the first and second embodiments are slightly different from each other in the mounting position on the vehicle body frame 10, the seat height adjusting mechanisms 30 of the first and second embodiments have the same structure, and therefore the height adjusting principles of the seats 10 of the first and second embodiments are the same, and the operation principle of the stroller 100b of the second embodiment will not be described in detail. It should be noted that, although the seat height adjusting mechanism 10 in the first and second embodiments is only shown that the load-bearing seat 31 is slidably disposed at the rider 13 or the rear leg 12, of course, the load-bearing seat 31 of the seat height adjusting mechanism 10 in the first and second embodiments may also be slidably disposed at the front leg 11 according to actual needs, and therefore, the above examples are not limited; in addition, it should be noted that, when the seat 31 is slidably disposed at the front foot 11, the fixing element 34 is mounted at the front foot 11, so as to achieve the purpose that the seat 31 is slidably disposed at the front foot 11 through the fixing element 34.

Referring to fig. 12 to 16, a stroller 100c according to a third embodiment of the present invention has substantially the same structure as the stroller 100a according to the first embodiment, except that the specific structure of the seat height adjusting mechanism is described below:

(1) in the third embodiment, the seat height adjusting mechanism 30' includes a seat 31, the seat 31 is slidably disposed on the front leg 11, specifically, slidably disposed on the fixing element 34 of the front leg 11, so as to achieve the purpose of slidably disposed on the front leg 11 by means of slidably disposed on the fixing element 34;

in the first embodiment, the seat height adjusting mechanism 30 includes a load-bearing seat 31, and the load-bearing seat 31 is slidably disposed at the rider 13, specifically, slidably disposed at the fixing member 34 of the rider 13.

It should be noted that, the carrying seat 31 of the third embodiment can also be slidably disposed on the rear leg 12 or the rider 13 according to actual needs, and therefore, the present invention is not limited to the above examples.

(2) In the third embodiment, the seat height adjusting mechanism 30 ' comprises a lock releasing operation piece 33 ' and a lock piece 32 ', the lock releasing operation piece 33 ' and the lock piece 32 ' are independent from each other, that is, the lock releasing operation piece 33 ' is an independent module, and the lock piece 32 ' is also an independent module, so that the lock releasing operation piece 33 ' and the lock piece 32 ' are linked together through a linkage structure; in the first embodiment, the seat height adjusting mechanism 30 includes the lock release operation member 33 and the lock member 32, and the lock release operation member 33 and the lock member 32 are integrated together, so that the lock release operation member 33 and the lock member 32 in the first embodiment are not linked by a third party.

(3) In the third embodiment, the locking element 32 'and the unlocking operation element 33' are pivotally mounted on the carrying seat 31, and the locking element 32 'is linked to perform the unlocking movement by the pivotal swing of the unlocking operation element 33'; specifically, as shown in fig. 15 and 16, the carrying seat 31 is provided with a first sleeving column 311 and a second sleeving column 312, the middle part of the locking member 32 ' is sleeved at the first sleeving column 311, the lock releasing operation member 33 ' is sleeved at the second sleeving column 312, the lock releasing operation member 33 ' is further embedded and linked with the locking member 32 ', the restoring elastic member 36 ' is sleeved at the first sleeving column 311, one end of the restoring elastic member 36 ' abuts against the locking member 32 ', the other end of the restoring elastic member 36 ' abuts against the carrying seat 31, for example, the restoring elastic member 36 ' is a torsion spring, and of course, a tension spring or a compression spring is selected according to actual needs, so the limitation is not included; therefore, in the third embodiment, the lock releasing operation member 33 ' is pivoted to interlock with the locking member 32 ', and the locking member 32 ' is released from the step locking portion 35. It can be understood that when the locking member 32 'and the unlocking operation member 33' are pivotally mounted on the fixing member 34, the first nesting column 311 and the second nesting column 312 are provided by the fixing member 34.

In the first embodiment, the locking member 32 is disposed slidably, and the locking member 32 and the unlocking operation member 33 are integrated together, so that in the first embodiment, the sliding of the locking member 32 is driven by the unlocking operation member 33, so that the sliding locking member 32 and the segment locking portion 35 are unlocked.

Except for the above differences, the other parts are the same as those of the first embodiment, and thus are not described herein again.

The operation of the stroller 100c according to the third embodiment of the present invention will be described with reference to fig. 12 to 16: when the height position of the seat 20 on the frame 10 needs to be adjusted upwards, a user directly pulls the seat 20 upwards, so that the acting force acting on the seat 20 is transmitted to the load-bearing seat 31, and the load-bearing seat 31 has a tendency of sliding upwards; under the mutual pushing action of the inclined structure 321 of the locking member 32 ' and the inclined structure 351 of the segment locking portion 35, the locking member 32 ' is pivoted inward against the elastic force of the return elastic member 36 ', so that the locking member 32 ' is unlocked from the segment locking portion 35 aligned with the locking member 32 ', thereby allowing the seat 31 to be adjusted upward together with the seat 20 until the locking member 32 ' is again aligned with another segment locking portion 35, and the locking member 32 ' is automatically locked with another segment locking portion 35 aligned with the locking member 32 ' under the action of the return elastic force of the return elastic member 36 ' to fix the position of the adjusted seat 31 on the handle 13. When the seat 20 is adjusted downward at the height position of the frame 10, the user operates the release operation member 33 ', the locking member 32' is interlocked with the release operation member 33 'to release the lock from the aligned step position locking portions 35 against the elastic force of the return elastic member 36', thereby allowing the seat 31 to be adjusted downward together with the seat 20.

Referring to fig. 17 to 20, the frame 10 and the seat 20 of the stroller 100d according to the fourth embodiment of the present invention and the stroller 100a according to the first embodiment of the present invention have the same structure, and the seat height adjusting mechanisms of the stroller 100d according to the fourth embodiment and the stroller 100a according to the first embodiment of the present invention each include a supporting seat 31, a locking member 32, a lock releasing operation member 33, and a fixing member 34, wherein the supporting seat 31 is slidably disposed on the fixing member 34, and the fixing member 34 is disposed on the handle 13. The difference is as follows:

(1) in the fourth embodiment, at least two locking members 32 are spaced from each other along the sliding direction of the carrying seat 31, the lock releasing operation member 33 is simultaneously linked with all the locking members 32, that is, the same lock releasing operation member 33 is simultaneously linked with all the locking members 32 to move together, the locking members 32 are mounted on the fixing member 34 and have at least one locking position (see fig. 18 and 20) and one lock releasing position, the carrying seat 31 is provided with the segment locking portions 35, so that any one of the locking members 32 is in the locking position when selectively locked with the segment locking portions 35 as shown in fig. 18 and 20, and the lock releasing operation member 33 is linked with all the locking members 32 to move together for lock releasing, and any one of the locking members 32 is released from the locking with the segment locking portions 35 to be in the lock releasing position; it is understood that the locking member 32 can be installed at the carrying seat 31 according to actual needs, and correspondingly, the fixing member 34 is provided with a step-and-place locking portion 35, so that the above-mentioned example is not limited.

In the first embodiment, the locking member 32 is mounted on the carrying seat 31 and has at least a locking position and a releasing position, the fixing member 34 is provided with at least segment locking portions 35 spaced apart from each other along the sliding direction of the carrying seat 31, and the locking member 32 is in the locking position when selectively locked with any segment locking portion 35; the lock release operation member 33 moves the lock member 32 out of the lock engagement with any one of the stepped lock portions 35.

(2) In the fourth embodiment, the lock releasing operation member 33 and the locking member 32 are independent from each other, that is, the lock releasing operation member 33 is an independent module, and the locking member 32 is also an independent module, so that the lock releasing operation member 33 and the locking member 32 are linked together through a linkage structure (such as a traction member 37, a rotary table 38 and a push-pull rod 39a described below); in the first embodiment, the locking/unlocking operation member 33 and the locking member 32 are integrally formed, so that the pulling member 37, the rotating plate 38 and the push-pull rod 39a are not provided between the locking/unlocking operation member 33 and the locking member 32.

(3) In the fourth embodiment, the seat height adjusting mechanism 30 ″ further includes a flexible pulling member 37, and the release operating member 33 is linked with the locking member 32 through the pulling member 37 for the purpose of remote control of the locking member 32; specifically, a first end of the pulling member 37 is connected to the lock release operation member 33 mounted on the rider 13, and a second end of the pulling member 37 is connected to the locking member 32 mounted on the fixing member 34; more specifically, the seat height adjusting mechanism 30 ″ further includes a rotating plate 38 pivotally connected to the rider 13, the rotating plate 38 has a first mounting portion 381 and a second mounting portion 382 distributed on both sides of a center line L of the rotating plate 38, the unlocking operation member 33 is connected to the first mounting portion 381, and a first end of the pulling member 37 is connected to the second mounting portion 382 so as to be converted into rotation of the rotating plate 38 around the center line L by sliding movement of the unlocking operation member 33, so that the rotating plate 38 pulls the locking member 32 through the pulling member 37 for unlocking; in order to more reliably move all the locking members 32 together, the seat height adjusting mechanism 30 ″ further includes a push-pull rod 39a, the push-pull rod 39a is slidably disposed on the fixing members 34 along the sliding direction of the load bearing seat 31, a second end of the pulling member 37 is mounted on the push-pull rod 39a, and the push-pull rod 39a is interlocked with the locking members 32.

In the first embodiment, since the locking member 32 and the lock release operation member 33 of the seat height adjusting mechanism 30 are integrally formed, and the pulling member 37, the rotating plate 38 and the push-pull rod 39a are not provided between the locking member 32 and the lock release operation member 33, the height adjusting mechanism 30 is not provided with the pulling member 37, the rotating plate 39 and the push-pull rod 39 a.

(4) In the fourth embodiment, the elastic return member 36 is directly disposed between the push-pull rod 39a and the fixing member 34, so that the elastic return member 36 returns the locking member 32 via the push-pull rod 39 a; in the first embodiment, the elastic restoring element 36 is directly disposed between the locking element 32 and the carrying seat 31 or the fixing element 34 where the locking element is located, so that the elastic restoring element 36 directly drives the locking element 32 to restore.

(5) In the fourth embodiment, as shown in fig. 18 and 20, only the locking member 32 has the inclined structure 321; in the first embodiment, the locking member 32 and the segment locking portion 35 have the

inclined structures

321 and 351, respectively.

Except for the above differences, the other embodiments are the same as the first embodiment, and therefore, the description thereof is omitted. The seat 31 of the seat height adjusting mechanism 30 ″ of the fourth embodiment may be slidably disposed on the front leg 11 or the rear leg 12 of the frame 10 according to actual requirements, and the fixing member 34 of the seat height adjusting mechanism 30' is correspondingly mounted on the front leg 11 or the rear leg 12, so the invention is not limited to the above example.

The operation of the stroller 100d according to the fourth embodiment of the present invention will be explained with reference to fig. 17 to 20: when the height position of the seat 20 on the frame 10 needs to be adjusted upwards, a user directly pulls the seat 20 upwards, so that the acting force acting on the seat 20 is transmitted to the load-bearing seat 31, and the load-bearing seat 31 has a tendency of sliding upwards; the carrier 31 having the tendency to slide upward is pushed by the segment locking portion 35 to push the inclined structure 321 of the locking member 32 aligned with the segment locking portion 35, so that all the locking members 32 slide together and retract inward, and simultaneously, the push-pull rod 39a is also pushed to slide upward against the elastic force of the return elastic member 36, so that the segment locking portion 35 and one locking member 32 aligned with the segment locking portion 35 are unlocked, thereby allowing the carrier 31 to be adjusted upward together with the seat 20 until the segment locking portion 35 is aligned with another locking member 32 again, and the push-pull rod 39a slides downward under the elastic force of the return elastic member 36, so that the slid push-pull rod 39a automatically pushes the segment locking portion 35 to lock with the locking member 32 aligned therewith, thereby fixing the position of the carrier 31 on the handle 13 after the adjustment. When the height position of the seat 20 on the frame 10 is to be adjusted downward, the user operates the release operation member 33, the release operation member 33 rotates the rotating disc 38 around the center line L, so that the rotating disc 38 pulls the push-pull rod 39a through the pulling member 37 to slide upward against the elastic force of the return elastic member 36, so that all the locking members 32 are slid and retracted together by the upward sliding push-pull rod 39a, and the segment locking portion 35 is released from one locking member 32 aligned with the segment locking portion 35, thereby allowing the load-bearing seat 31 to be adjusted downward together with the seat 20.

Referring to fig. 21 to 24, a stroller 100e according to a fifth embodiment of the present invention includes a frame 10, a seat 20 and a seat height adjusting mechanism 40. The frame 10 comprises a front foot 11, a rear foot 12 and a rider 13, and the front foot 11, the rear foot 12 and the rider 13 can be unfolded and folded to facilitate the folding operation of the frame 10; preferably, the rider 13 is pivotally connected to the rear leg 12 and the front leg 11 in sequence, so that the pivotal connection between the rider 13 and the front leg 11 is located at the front lower portion of the pivotal connection between the rider 13 and the rear leg 12, and the pivotal connection between the front leg 11, the rear leg 12 and the rider 13 is simplified under the condition of ensuring the convenient folding operation of the frame 10, but not limited thereto. The seat height adjusting mechanism 40 includes a seat 41, the seat 41 is pivotally connected to the frame 10 about a pivot center line C, the seat 41 has at least a first set of joints 41a and a second set of joints 41b spaced apart from each other along a rotation direction of the seat 41, a distance from the first set of joints 41a to the pivot center line C is different from a distance from the second set of joints 41b to the pivot center line C, and the seat 20 is detachably mounted on the first set of joints 41a or the second set of joints 41 b; for example, the distance from the first set of joints 41a to the pivot center line C is smaller than the distance from the second set of joints 41b to the pivot center line C, so that the height of the seat 20 assembled on the first set of joints 41a on the frame 10 is lower than the height of the seat 20 assembled on the second set of joints 41b on the frame 10, therefore, by rotating the seat 31, the position between the first set of joints 41a and the second set of joints 41b is easy to exchange, and therefore, the height adjustment of the seat 20 on the frame 10 is more convenient; specifically, the rider 13, the front leg 11 and the carrying seat 31 are coaxially pivoted, so that the carrying seat 31 can rotate conveniently; for example, the central angle between the first set of joints 41a and the second set of joints 41b is 90 degrees, that is, the position exchange between the first set of joints 41a and the second set of joints 41b only requires the bearing seat 31 to rotate 90 degrees, and the angular arrangement can prevent one of the first set of joints 41a and the second set of joints 41b from causing obstacles when the other of the first set of joints 41a and the second set of joints 41b is assembled with the seat 20. It should be noted that, when the seat 20 is assembled with the first set of joints 41a, the second set of joints 41b is in the idle state, and similarly, when the seat 20 is assembled with the second set of joints 41b, the first set of joints 41a is in the idle state, therefore, the seat 20 and the carrying seat 31 in the stroller 100e of the fifth embodiment are detachably designed.

It should be noted that, in the first embodiment, the load-bearing seat 31 of the seat height adjusting mechanism 30 is disposed slidably; in the fifth embodiment, the load-bearing seat 41 of the seat height adjusting mechanism 40 is pivotally arranged, so that, in order to ensure the position of the rotated load-bearing seat 41, the remaining structure of the seat height adjusting mechanism 30 in the first to fourth embodiments except the load-bearing seat 31 can be changed over, i.e. the lock releasing operation member 33 is used to interlock the locking member 32 for the purpose of releasing the lock between the load-bearing seat 41 and the fixing member 34. It should be understood that, according to practical requirements, the seat 41 of the seat height adjusting mechanism 40 in the fifth embodiment can be pivotally connected to the front leg 11, the rear leg 11 or the rider 13 of the frame 10 about a pivot center line C, and therefore the invention is not limited to the above examples.

The operation of the stroller 100e according to the fifth embodiment of the present invention will be explained with reference to fig. 21 to 24: when the seat 20 shown in fig. 21 is adjusted to the position shown in fig. 22, the seat 20 is first detached from the first set of joints 41a shown in fig. 21; then, the bearing seat 41 is rotated counterclockwise, so that the first set of joints 41a and the second set of joints 41b exchange positions; then, the seat 20 is assembled to the second group joint 41b, as shown in fig. 22. When the position of the seat 20 shown in fig. 22 is to be adjusted to the position shown in fig. 21, the seat 20 is first detached from the second set of joints 41a shown in fig. 22; then, the bearing seat 41 is rotated clockwise, so that the first set of joints 41a and the second set of joints 41b exchange positions; then, the seat 20 is assembled to the first group joint 41a, as shown in fig. 21.

Referring to fig. 25 to 33, the frame 10 and the seat 20 of the stroller 100f according to the sixth embodiment of the present invention are the same as the frame 10 and the seat 20 of the stroller 100a according to the first embodiment of the present invention, and the seat height adjusting mechanisms of the stroller 100f according to the sixth embodiment and the stroller 100a according to the first embodiment of the present invention comprise a supporting seat 31, a locking member 32, a lock releasing operation member 33 and a fixing member 34, wherein the supporting seat 31 is slidably disposed on the fixing member 34, and the fixing member 34 is disposed on the handle 13. The difference is as follows:

(1) in the sixth embodiment, the lock releasing operation member 33 and the locking member 32 are independent from each other, that is, the lock releasing operation member 33 is an independent module, and the locking member 32 is also an independent module, so that the lock releasing operation member 33 and the locking member 32 are linked together by a linkage structure (such as a transmission member 39b and a traction member 37 described below). In the first embodiment, the lock release operation member 33 and the locking member 32 are integrally formed, and therefore, the transmission member 39a and the pulling member 37 are not provided between the lock release operation member 33 and the locking member 32.

(2) In the sixth embodiment, the seat height adjusting mechanism 30 ″ further includes a flexible pulling member 37, and the release operating member 33 is coupled to the locking member 32 via the pulling member 37 for remote control of the locking member 32; specifically, a first end of the pulling piece 37 is connected to the release operation piece 33 mounted on the seat 20, and a second end of the pulling piece 37 is connected to the locking piece 32 mounted on the carrying seat 31; more specifically, the seat height adjusting mechanism 30 ″ further includes a transmission member 39a movably disposed on the seat 20, the transmission member 39a is linked with the release operation member 33, the first end of the pulling member 32 is mounted on the transmission member 39a, and the purpose of pulling the locking member 32 to perform the release movement is achieved by the release operation member 33 through the transmission member 39a and the pulling member 32. Since the interlocking relationship between the transmission member 39a and the lock release operation member 33 is well known in the art, it will not be described here. For example, the release operation member 33 and the transmission member 39a are slidably disposed on the seat 20, and the sliding directions of the release operation member 33 and the transmission member 39a are crossed, so that the transmission member 39a is linked to move to pull the traction member 37 or release the pulling of the traction member 37 by the sliding movement of the release operation member 33. Since the pulling member 37 and the transmission member 39a are not provided between the lock release operation member 33 and the locking member 32 of the first embodiment, the lock release operation member 33 and the locking member 32 do not have the above-described connection relationship.

(3) In the sixth embodiment, since the unlocking operation member 33 is installed on the seat 20, the seat 20 and the carrying seat 31 are not detachable. In the first embodiment, the seat 20 and the carrying seat 31 may be detachable, or may be non-detachable.

Except for the above differences, the other embodiments are the same as the first embodiment, and therefore, the description thereof is omitted. In addition, in the sixth embodiment, the seat 31 of the seat height adjusting mechanism 30 ″ is slidably disposed on the front leg 11 or the rear leg 12 of the frame 10 according to actual requirements, and specifically, the fixing member 34 of the seat height adjusting mechanism 30 ″ is mounted on the front leg 11 or the rear leg 12 of the frame 10, so that the seat 31 is slidably disposed on the front leg 11 or the rear leg 12 by being slidably disposed on the fixing member 34.

The operation of the stroller 100f according to the sixth embodiment of the present invention will be described with reference to fig. 25 to 32: when the height position of the seat 20 on the frame 10 needs to be adjusted upwards, a user directly pulls the seat 20 upwards, so that the acting force acting on the seat 20 is transmitted to the load-bearing seat 31, and the load-bearing seat 31 has a tendency of sliding upwards; the carrier seat 31 with upward sliding tendency is pushed by the mutual pushing action between the inclined structure 321 of the locking member 32 and the inclined structure 351 of the segment locking portions 35, so that the locking member 32 slides and retracts against the return elastic member 36, and the locking member 32 is released from the aligned segment locking portion 35, thereby allowing the carrier seat 31 to be adjusted upward together with the seat 20 until the locking member 32 is aligned with another segment locking portion 35 again; at this time, the locking member 32 is automatically locked with the aligned other segment locking portion 35 by the elastic force of the return elastic member 36, so as to fix the position of the adjusted carrier seat 31 on the rider 13. When the seat 20 is adjusted downward at the height position of the frame 10, the user operates the release operation member 33, and the locking member 32 is pulled by the release operation member 33 through the transmission member 39a and the traction member 37 to slide and retract against the return elastic member 36, so that the locking member 32 is released from the other section of the locking portion 35 aligned with the locking member 32, thereby allowing the seat 31 to be adjusted downward together with the seat 20.

Compared with the prior art, the bearing

seats

31 and 41 are arranged on the frame 10 in a sliding way along the vertical direction of the frame 10, so the height position of the seat 20 on the bearing seats 31 and 41 on the frame 10 is adjusted by the vertical sliding of the bearing

seats

31 and 41 relative to the frame 10, therefore, the height position of the seat 20 on the bearing seats 31 and 41 on the frame 10 can be adjusted flexibly through the vertical sliding of the bearing

seats

31 and 41 relative to the frame 10 according to the height of the baby, on one hand, the adjustment operation of an operator is convenient, and on the other hand, the universality is improved.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims

1. A seat height adjusting mechanism is arranged on a frame of a baby stroller and is characterized by comprising a bearing seat which is used for being assembled with a seat, the bearing seat is arranged on the frame in a sliding mode along the vertical direction of the frame, and the height position of the seat on the bearing seat on the frame is adjusted by means of the vertical sliding of the bearing seat relative to the frame.

2. The seat height adjusting mechanism of claim 1, further comprising a locking member, a lock releasing operation member linked with the locking member, and a fixing member mounted on the frame, wherein the carrying seat is slidably mounted on the fixing member, the locking member is mounted on one of the fixing member and the carrying seat and has at least a locking position and a lock releasing position, the other of the fixing member and the carrying seat is provided with at least two segment locking portions spaced apart from each other along a sliding direction of the carrying seat, the locking member is in the locking position when selectively locked with any of the segment locking portions, and the lock releasing operation member links the locking member to disengage from being locked with any of the segment locking portions, so that the locking member is in the lock releasing position.

3. The seat height adjusting mechanism of claim 1, further comprising at least two locking members spaced apart from each other along a sliding direction of the seat, a lock releasing operation member simultaneously linked with all the locking members, and a fixing member mounted on the frame, wherein the seat is slidably mounted on the fixing member, the locking member is mounted on one of the fixing member and the seat and has at least a locking position and a lock releasing position, the other of the fixing member and the seat is provided with a step locking portion, any one of the locking members is in the locking position when selectively locked with the step locking portion, the lock releasing operation member links all the locking members to perform a lock releasing movement together, and any one of the locking members is released from being locked with the step locking portion and is in the lock releasing position.

4. The seat height adjusting mechanism according to claim 2 or 3, further comprising a return elastic member, wherein the return elastic member is disposed on the locking member and the carrying seat or the fixing member having the locking member, and the return elastic member constantly has a tendency to urge the locking member from the unlocking position to the locking position.

5. The seat height adjusting mechanism of claim 4, wherein at least one of the locking member and the segment locking member has an inclined structure inclined with respect to a sliding direction of the seat, and the locking member is switched from the locking position to the unlocking position by the inclined structure during the upward sliding of the seat.

6. The seat height adjusting mechanism of claim 5, wherein the inclined structure of the locking member mounted on the seat is located on the upper side of the locking member, and correspondingly, the inclined structure of the segment locking portion formed on the fixing member is located on the upper side of the segment locking portion; or the inclined structure of the locking piece arranged on the fixing piece is positioned at the lower side of the locking piece, and correspondingly, the inclined structure of the section matching locking part arranged on the bearing seat is positioned at the lower side of the section matching locking part.

7. The seat height adjusting mechanism according to claim 2 or 3, wherein the locking member is slidably arranged, and a sliding direction of the locking member is staggered with a sliding direction of the carrier.

8. The seat height adjustment mechanism of claim 7, wherein the release operating member and the locking member are together a unitary structure.

9. The seat height adjustment mechanism of claim 7, wherein the release operating member and the locking member are independent of each other.

10. The seat height adjustment mechanism of claim 9, further comprising a flexible pulling member, wherein the release operating member is coupled to the locking member via the pulling member.

11. The seat height adjustment mechanism of claim 10, wherein a first end of the traction member is coupled to a lock release operating member mounted to the frame and a second end of the traction member is coupled to a locking member mounted to the stationary member.

12. The seat height adjustment mechanism of claim 11, further comprising a turntable pivotally coupled to the frame, the turntable having a first mounting portion and a second mounting portion disposed on opposite sides of a centerline of the turntable, the release operating member coupled to the first mounting portion, the first end of the traction member coupled to the second mounting portion.

13. The seat height adjusting mechanism of claim 12, further comprising a push-pull rod slidably disposed on the fixing member or the load-bearing seat along a sliding direction of the load-bearing seat, wherein the second end of the traction member is mounted on the push-pull rod, and the push-pull rod is coupled to the locking member.

14. The seat height adjustment mechanism of claim 10, wherein a first end of the traction member is coupled to a lock release operator mounted on the seat and a second end of the traction member is coupled to a lock member mounted on the load bearing seat.

15. The seat height adjustment mechanism of claim 14, further comprising a transmission member movably disposed on the seat, wherein the transmission member is coupled to the release operation member, and wherein the first end of the traction member is mounted to the transmission member.

16. The seat height adjusting mechanism of claim 15, wherein the lock release operation member and the transmission member are slidably disposed on the seat, and the sliding directions of the lock release operation member and the transmission member intersect.

17. The seat height adjustment mechanism according to claim 2 or 3, wherein the locking member is pivotally arranged, and the lock release operation member and the locking member are integrated together.

18. The seat height adjusting mechanism of claim 2 or 3, wherein the locking member and the lock release operating member are pivotally mounted on the carrying seat or the fixing member, respectively, and the locking member is linked to perform a lock release movement by the pivotal movement of the lock release operating member.

19. The seat height adjustment mechanism of claim 1, wherein the segment lock is a slotted structure.

20. The seat height adjustment mechanism of claim 1, wherein the carrier is pivotally connected to the frame about a pivot centerline, the carrier having at least a first set of joints and a second set of joints spaced apart from each other in a direction of rotation of the carrier, the first set of joints being spaced apart from the pivot centerline by a distance different from the second set of joints, the seat being removably mounted to the first set of joints or the second set of joints.

21. The seat height adjustment mechanism of claim 20, wherein a central angle subtended between the first set of joints and the second set of joints is 90 degrees.

22. The utility model provides a baby stroller, includes frame and seat, the frame contains preceding foot, back foot and car hand, can open and shut the operation between preceding foot, back foot and the car hand three, its characterized in that, baby stroller still includes seat height adjustment mechanism, seat height adjustment mechanism contains bears the seat, bear the seat edge the upper and lower direction cunning of frame is located on the frame, the seat group connect in bear on the seat, borrow by bear the seat relative the frame slide from top to bottom and adjust seat on bearing the seat is in high position on the frame.

23. The stroller of claim 22, wherein the seat is slidably disposed on the handle, the front leg or the rear leg in a vertical direction of the frame.

24. The stroller of claim 22, wherein the seat height adjusting mechanism further comprises a locking member, a lock releasing operation member linked with the locking member, and a fixing member mounted on the frame, the seat is slidably mounted on the fixing member, the locking member is mounted on one of the fixing member and the seat and has at least one locking position and one lock releasing position, the other of the fixing member and the seat is provided with at least two segment locking portions spaced apart from each other along a sliding direction of the seat, the locking member is located at the locking position when selectively locked with any of the segment locking portions, and the lock releasing operation member links the locking member to disengage from the locking with any of the segment locking portions, so that the locking member is located at the lock releasing position.

25. The stroller of claim 22, wherein the seat height adjustment mechanism further comprises at least two locking members spaced apart from each other along a sliding direction of the seat, a release operation member simultaneously coupled to all the locking members, and a fixing member mounted on the frame, the seat is slidably mounted on the fixing member, the locking member is mounted on one of the fixing member and the seat and has at least one locking position and one release position, the other of the fixing member and the seat is provided with a step-lock portion, any one of the locking members is in the locking position when selectively locked to the step-lock portion, the release operation member is coupled to all the locking members for release movement, and any one of the locking members is released from the step-lock portion and is in the release position.

26. The stroller of claim 24 or 25, wherein the seat height adjustment mechanism further comprises a return spring disposed on the locking member and the carrier or anchor member having the locking member, wherein the return spring has a tendency to urge the locking member from the unlocked position to the locked position.

27. The stroller of claim 26, wherein at least one of the locking member and the segment locking member has an inclined structure inclined with respect to a sliding direction of the carrier, and the locking member is switched from the locking position to the unlocking position by the inclined structure during the upward sliding of the carrier.

28. The stroller of claim 27, wherein the inclined structure of the locking member mounted on the seat is located at an upper side of the locking member, and correspondingly, the inclined structure of the segment locking portion formed on the fixing member is located at an upper side of the segment locking portion; or the inclined structure of the locking piece arranged on the fixing piece is positioned at the lower side of the locking piece, and correspondingly, the inclined structure of the section matching locking part arranged on the bearing seat is positioned at the lower side of the section matching locking part.

29. The stroller of claim 24 or 25, wherein the locking member is slidably disposed, and a sliding direction of the locking member is staggered with respect to a sliding direction of the carrier.

30. The stroller of claim 29, wherein the release operator and the locking member are integrally formed together, and the seat is detachably assembled with the carrier.

31. The stroller of claim 29, wherein the seat height adjustment mechanism further comprises a flexible pulling member, the lock release operator and the locking member being independent of each other, the lock release operator being coupled to the locking member via the pulling member.

32. The stroller of claim 31, wherein the first end of the pulling member is coupled to a lock release actuator mounted to the handle and the second end of the pulling member is coupled to a lock member mounted to the stationary member.

33. The stroller of claim 32, wherein the seat height adjustment mechanism further comprises a turntable pivotally connected to the rider, the turntable having a first mounting portion and a second mounting portion disposed on opposite sides of a centerline of the turntable, the release operating member being connected to the first mounting portion, the first end of the traction member being connected to the second mounting portion, the seat being detachably connected to the seat carrier.

34. The stroller of claim 33, wherein the seat height adjustment mechanism further comprises a push-pull rod slidably disposed on the fixing member or the seat in a sliding direction of the seat, the second end of the traction member is mounted on the push-pull rod, and the push-pull rod is coupled to the locking member.

35. The stroller of claim 31, wherein the seat height adjustment mechanism further comprises a transmission member movably disposed on the seat, the transmission member is coupled to the release operation member, a first end of the traction member is mounted on the transmission member, and a second end of the traction member is connected to the locking member mounted on the carrying seat.

36. The stroller of claim 35, wherein the lock release operator and the transmission member are slidably disposed on the seat, and the directions of sliding movement of the lock release operator and the transmission member intersect.

37. The stroller of claim 24 or 25, wherein the locking member is pivotally mounted, and the release actuator and the locking member are integrally formed.

38. The stroller of claim 24 or 25, wherein the locking member and the unlocking operation member are pivotally mounted on the supporting base or the fixing member, and the locking member is driven to perform the unlocking motion by the pivotal movement of the unlocking operation member.

39. The stroller of claim 22, wherein the carrier is pivotally connected to the frame about a pivot axis, the carrier having at least a first set of joints and a second set of joints spaced from each other in a direction of rotation of the carrier, the first set of joints being spaced from the pivot axis a different distance than the second set of joints, the seat being removably mounted to the first set of joints or the second set of joints.