Seat mounting adjuster for baby stroller

Abstract

A seat mounting adjuster for a baby stroller. Relates to the technical field of baby strollers. Comprising a first limiting piece, a second limiting piece and a locking assembly. The locking assembly comprises a shell and an unlocking piece, a sliding groove and a rotating groove which are communicated with each other are formed in the shell, the unlocking piece is arranged in the rotating groove and can slide up and down in the sliding groove, a rotating shaft and a spring bolt are arranged in the rotating groove, the lower portion of the spring bolt is arranged on the rotating shaft in a sleeving mode, and the lower portion of the spring bolt is arranged on the rotating shaft in a sleeving mode. The top of the spring bolt makes contact with the bottom of the unlocking piece, and the unlocking piece can push the spring bolt to rotate around the rotating shaft. When the upper portion of the spring bolt rotates to the outer side of the shell, the seat is in a locked state, and when the upper portion of the spring bolt rotates to the inner side of the shell, the seat is in an unlocked state. The second limiting pieces used for being connected with the frame are arranged on the two sides of the seat, an operator can conveniently observe butt joint of the second limiting pieces and the inserting positions on the seat, and the installation difficulty of the seat is lowered.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of baby strollers, in particular to a seat installation adjuster for a baby stroller. BACKGROUND

[0002] A baby stroller is a tool cart designed to facilitate outdoor activities for babies, and there are various models. It is a walking tool for babies. In order to meet the different use needs of users in different scenes, the functions of the existing baby strollers are also more abundant, such as the detachable connection between the seat of the baby stroller and the frame, and the frame can be quickly and conveniently folded. In this way, the overall volume of the baby stroller can be reduced, thereby facilitating the placement of the baby stroller in a smaller storage space such as a vehicle trunk.

[0003] In the Chinese patent document with publication number CN220410680U, a seat detachable baby stroller is disclosed, and specifically discloses an aluminum alloy frame, the top of the aluminum alloy frame is fixedly connected with a seat holder, the top of the seat holder is installed with a baby seat, and the bottom of the seat holder is provided with a seat structure convenient for disassembly. The seat detachable baby stroller is provided with a metal cover, a pull-out piece, an oblong slot, a limiting block, a seat bottom lock pin and a anti-dropping ring. The pull-out piece is pushed inward along one side of the metal cover. The spring retracts to make the limiting block retreat. The seat bottom lock pin at the bottom of the baby seat can be detached along the oblong slot, realizing the function of easily disassembling the seat.

[0004] However, in the above-mentioned patent, the seat can be disassembled only by pushing and pulling the pull-out piece, which is prone to misoperation and has low safety. In addition, during the process of installing the seat back to the frame, the seat bottom lock pin needs to be connected with the oblong slot. However, when the user holds the seat, the oblong slot is blocked by the seat and is in the visual blind area, so it is difficult for the user to quickly install the seat, and the user experience is poor. Utility model content

[0005] In order to overcome the shortcomings of the prior art, the present application provides a seat installation adjuster for a baby stroller.

[0006] The technical scheme adopted by the present application is as follows: a seat installation adjuster for a baby stroller is arranged on the side wall of a seat, comprising a first limiting piece, a second limiting piece and a locking assembly, the first limiting piece is arranged inside one side of the seat, the second limiting piece is arranged outside one side of the seat, and the first limiting piece and the second limiting piece are locked by bolts;

[0007] The locking assembly is movably connected to the outer side of the second limiting member, and comprises a housing and an unlocking member; the housing is internally provided with a sliding groove and a rotating groove which are in communication with each other; the unlocking member is arranged in the rotating groove and can slide up and down in the sliding groove; the rotating groove is internally provided with a rotating shaft and a lock tongue; the lower part of the lock tongue is sleeved on the rotating shaft; the top of the lock tongue is in contact with the bottom of the unlocking member; and the unlocking member can drive the lock tongue to rotate around the rotating shaft.

[0008] When the upper part of the lock tongue rotates to the outer side of the housing, the seat is in a locked state; and when the upper part of the lock tongue rotates to the inner side of the housing, the seat is in an unlocked state.

[0009] Optionally, the sliding groove extends along the height direction of the housing; the upper part of the rotating groove is in communication with the sliding groove; the lower part of the rotating groove is provided with a pair of clamping grooves; the two ends of the rotating shaft are respectively and one-to-one arranged in the pair of clamping grooves; the lock tongue comprises a wedge-shaped part and a rotating part; the rotating part is tubular; the rotating shaft is arranged in the rotating part; the wedge-shaped part is arranged at the top of the rotating part; the inclined surface of the wedge-shaped part faces away from the seat; and the outer diameter of the wedge-shaped part gradually decreases from top to bottom.

[0010] The side of the housing away from the seat is provided with an opening; the wedge-shaped part is rotated to the outer side of the housing through the opening and is clamped with the frame.

[0011] Optionally, the two sides of the wedge-shaped part are each provided with a first guide member; the lower part of the unlocking member is provided with two second guide members; and the two second guide members are respectively and one-to-one arranged above the two first guide members.

[0012] The top of the first guide member is provided with a first inclined surface; a first groove is arranged on the first guide member and below the first inclined surface; the top of the second guide member is provided with a second inclined surface; and a second groove is arranged on the second guide member and below the second inclined surface; and the first inclined surface and the second inclined surface interfere with each other in the vertical direction.

[0013] When the unlocking member moves downward, the first inclined surface can be clamped in the second groove, and the second inclined surface can be clamped in the first groove.

[0014] Optionally, the communication part of the sliding groove and the rotating groove is provided with a limiting block; the side wall of the unlocking member is provided with a clamping block; the side of the clamping block facing the groove bottom of the sliding groove is provided with a clamping opening; the clamping opening is internally provided with a first spring; one end of the first spring is in abutment with the limiting block; and the other end of the first spring is in abutment with the clamping block.

[0015] Optionally, the wedge-shaped part is provided with a limiting hole on one side of the rotating groove, the rotating groove is provided with a limiting column, the limiting column is in the shape of a truncated cone, the inner diameter of the limiting hole is greater than the minimum outer diameter of the limiting column, a second spring is sleeved on the limiting column, one end of the second spring is in abutment with the limiting column, and the other end of the second spring is in abutment with the limiting hole; when the unlocking piece moves downward, the second spring is in a compressed state.

[0016] Optionally, the top of the unlocking piece is provided with a button, the button comprises a pressing part and a connecting part, the pressing part and the connecting part are integrally formed and in the shape of T, the top of the shell is provided with a through hole, the pressing part is located on the outer side of the shell, and the connecting part extends into the sliding groove and is connected with the unlocking piece.

[0017] The shell is further provided with a containing groove, the upper part of the containing groove is in communication with the through hole, the lower part of the containing groove is in communication with the sliding groove, the depth of the containing groove is greater than the depth of the sliding groove, and when the bottom of the pressing part is in abutment with the lower part of the containing groove, the top of the pressing part is flush with the top of the shell.

[0018] Optionally, the side wall of the pressing part is attached to the inner wall of the through hole, the side wall of the pressing part is provided with a perforation, the perforation is provided with a safety block, one end of the safety block is provided in the perforation, and the other end of the safety block is located on the outer side of the perforation and interferes with the top of the shell.

[0019] Optionally, the inside of the pressing part is provided with a cavity, the cavity is in communication with the perforation, the inner diameter of the cavity is greater than the inner diameter of the perforation, the safety block comprises a constant-diameter part and a variable-diameter part, the outer diameter of the constant-diameter part is less than or equal to the inner diameter of the perforation, the maximum inner diameter of the variable-diameter part is greater than the inner diameter of the perforation and less than the inner diameter of the cavity.

[0020] The end of the variable-diameter part is provided with a counterbore, the side of the cavity away from the perforation is provided with a containing hole, the containing hole is coaxially arranged with the counterbore, and the cavity is provided with a third spring, one end of the third spring is clamped in the containing hole, and the other end of the third spring is clamped in the counterbore.

[0021] Optionally, the outer wall of the variable-diameter part is further provided with a pair of notches, the pair of notches are symmetrically arranged on the two sides of the counterbore, the pair of notches are in communication with the counterbore, and the width of the notches is less than the outer diameter of the third spring.

[0022] Optionally, when the constant-diameter part is located on the outer side of the perforation, the end of the variable-diameter part is in abutment at the communication position of the perforation and the cavity, and the third spring is in an incomplete compression state.

[0023] Compared with the prior art, the application has the following beneficial effects:

[0024] 1. The second limiting member for connecting with the frame is arranged on both sides of the seat, facilitating the operator to observe the butt joint of the second limiting member and the insertion position on the seat, and reducing the installation difficulty of the seat.

[0025] 2. The safety block interfering with the shell is arranged on the button, so that the user must first push the safety block into the inside of the button to press the button, thereby preventing misoperation and improving the safety of the stroller during use.

[0026] 3. The reliable hooking between the first guide member and the second guide member is realized through the counter-pushing effect of the second spring on the lock tongue, so that the button and the unlocking member cannot be automatically reset, and after the button is pressed and released, the lock tongue remains in the state of being located in the shell, so that the seat remains in the unlocked state, facilitating the user to more conveniently disassemble the seat. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the use state reference drawing of the application;

[0028] Figure 2 is the schematic perspective view of the application;

[0029] Figure 3 is the exploded state reference drawing of the locking assembly;

[0030] Figure 4 is the schematic perspective view of the unlocking member and the lock tongue;

[0031] Figure 5 is the exploded state reference drawing of the button;

[0032] Figure 6 is the internal structure sectional view of the button;

[0033] Figure 7 is the schematic perspective view of the safety block;

[0034] In the figure: 1, seat; 2, first limiting piece; 20, bolt; 3, second limiting piece; 4, locking assembly; 41, shell; 411, sliding groove; 412, rotating groove; 413, clamping groove; 414, opening; 415, limiting block; 416, limiting column; 417, second spring; 418, through hole; 419, accommodating groove; 42, unlocking piece; 421, second guide piece; 4211, second inclined surface; 4212, second groove; 422, clamping block; 4220, clamping opening; 423, first spring; 43, rotating shaft; 44, locking tongue; 441, wedge-shaped part; 4410, limiting hole; 442, rotating part; 443, first guide piece; 4431, first inclined surface; 4432, first groove; 45, button; 451, pressing part; 4511, perforation; 4512, cavity; 4513, accommodating hole; 452, connecting part; 453, safety block; 4531, constant diameter part; 4532, variable diameter part; 4533, counterbore; 4534, notch; 454, third spring. DETAILED DESCRIPTION

[0035] In the following, the present application will be further described in conjunction with the accompanying drawings, which are: Figures 1-7 and the detailed description, it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0036] Figure 1 is a use state reference drawing of the present application, Figure 2 is a schematic perspective view of the present application. Referring to Figure 1 and Figure 2 The seat 1 installation adjuster for the baby stroller is arranged on the side wall of the seat 1, and each seat 1 is provided with two seat 1 installation adjusters, which are arranged on the opposite two side walls of the seat 1. The seat 1 installation adjuster comprises a first limiting piece 2, a second limiting piece 3 and a locking assembly 4. The first limiting piece 2 is arranged inside one side of the seat 1, the second limiting piece 3 is arranged outside one side of the seat 1, and the first limiting piece 2 and the second limiting piece 3 are locked by a bolt 20. The locking assembly 4 is movably connected to the outside of the second limiting piece 3. Specifically, the locking assembly 4 and the second limiting piece 3 can keep a relatively stationary state, and can also present a relatively rotating state. The seat 1 is installed on the frame, and the locking assembly 4 is used to lock the frame and the seat 1. When the locking assembly 4 and the second limiting piece 3 can rotate, the angle between the seat 1 and the frame can also rotate, so that reliable adjustment of the angle of the seat 1 can be realized.

[0037] Figure 3 is an exploded state reference drawing of the locking assembly, Figure 4 is a schematic perspective view of the unlocking piece and the locking tongue. Referring to Figure 3 and Figure 4 and in conjunction withFigure 2 The locking assembly 4 comprises a housing 41 and an unlocking piece 42. The housing 41 is internally provided with a receiving groove 419, a sliding groove 411 and a rotating groove 412 which are sequentially arranged from top to bottom and are in communication with each other. The receiving groove 419, the sliding groove 411 and the rotating groove 412 all extend along the height direction of the housing 41, and the depth of the receiving groove 419 is greater than that of the sliding groove 411. The unlocking piece 42 is arranged in the rotating groove 412 and can slide up and down in the sliding groove 411. A through hole 418 is arranged at the top of the housing 41 and is in communication with the receiving groove 419. A rotating shaft 43 and a lock tongue 44 are arranged in the rotating groove 412. Specifically, a pair of clamping grooves 413 are arranged at the lower part of the rotating groove 412, and the two ends of the rotating shaft 43 are respectively and one-to-one arranged in the pair of clamping grooves 413. The lock tongue 44 comprises a wedge-shaped part 441 and a rotating part 442. The wedge-shaped part 441 is arranged at the top of the rotating part 442, the inclined surface of the wedge-shaped part 441 faces away from the seat 1, the outer diameter of the wedge-shaped part 441 gradually decreases from top to bottom, and the rotating part 442 is in the shape of a tube. The rotating shaft 43 is arranged in the rotating part 442, so that the lock tongue 44 can rotate in the rotating groove 412. Further, an opening 414 is arranged at the side of the housing 41 away from the seat 1. The wedge-shaped part 441 is rotated to the outside of the housing 41 through the opening 414, and a corresponding socket is arranged on the vehicle frame. When the second limiting piece 3 is inserted into the vehicle frame, the part of the wedge-shaped part 441 located outside the opening 414 is clamped into the socket, so as to realize the locking of the seat 1.

[0038] Figure 5 is the exploded state reference drawing of the button, Figure 6 is the internal structure sectional view of the button. Referring to Figure 5 and Figure 6The two sides of the wedge-shaped part 441 are respectively provided with a first guide 443, the lower part of the unlocking part 42 is provided with two second guides 421, the two second guides 421 are respectively and one-to-one above the two first guides 443, the top of the first guide 443 is provided with a first slope 4431, the first guide 443 is provided with a first groove 4432 below the first slope 4431, the top of the second guide 421 is provided with a second slope 4211, the second guide 421 is provided with a second groove 4212 below the second slope 4211, the first slope 4431 and the second slope 4211 interfere in the vertical direction. The top of the unlocking part 42 is also provided with a button 45, the button 45 includes a pressing part 451 and a connecting part 452, the pressing part 451 and the connecting part 452 are integrally formed and in T-shaped, the pressing part 451 is located outside the shell 41, the connecting part 452 passes through the through hole 418 and extends into the accommodating groove 419. When the user presses the pressing part 451, the pressing part 451 and the connecting part 452 will move downward at the same time, so that the unlocking part 42 also moves downward at the same time, at this time, the first slope 4431 and the second slope 4211 will interfere, and the second guide 421 can only move in the vertical direction, which makes the first guide 443 can rotate towards the inside of the rotating groove 412. Further, the side of the wedge-shaped part 441 towards the rotating groove 412 is provided with a limiting hole 4410, the rotating groove 412 is provided with a limiting column 416, the limiting column 416 is in the shape of a circular truncated cone, the inner diameter of the limiting hole 4410 is greater than the minimum outer diameter of the limiting column 416, the limiting column 416 is sleeved with a second spring 417, one end of the second spring 417 abuts against the limiting column 416, the other end of the second spring 417 abuts against the limiting hole 4410. When the first slope 4431 and the second slope 4211 interfere and make the locking tongue 44 rotate, the second spring 417 will be in a compressed state, and then the second guide 421 continues to move downward, the interference between the second slope 4211 and the first slope 4431 contacts, the first guide 443 and the second guide 421 will have a gap in the horizontal direction, at this time, the second spring 417 releases energy and rebounds, pushes the wedge-shaped part 441 to rotate back, which makes the first slope 4431 can be clamped into the second groove 4212, the second slope 4211 can be clamped into the first groove 4432, and the rotation angle of the wedge-shaped part 441 is small, the wedge-shaped part 441 is still located in the rotating groove 412, so that after the pressing part 451 is released, the unlocking part 42 will not reset, the user can take the seat 1 from the frame only by holding the seat 1, without pressing the pressing part 451 and disassembling the seat 1, which reduces the operation difficulty.

[0039] Referring to Figure 3 and Figure 4The communication position of the sliding groove 411 and the rotating groove 412 is provided with a limiting block 415, the side wall of the unlocking piece 42 is provided with a clamping block 422, the side of the clamping block 422 facing the groove bottom of the sliding groove 411 is provided with a clamping opening 4220, the clamping opening 4220 is provided with a first spring 423, one end of the first spring 423 abuts against the limiting block 415, and the other end of the first spring 423 abuts against the clamping block 422. When the driving pressing part 451 is lowered and drives the unlocking piece 42 to be lowered, the first spring 423 is in a compressed state. When the seat 1 is reinstalled on the vehicle frame, the corresponding unlocking rod arranged on the vehicle frame will push the lock tongue 44, at this time, the hooking connection effect of the first guide piece 443 and the second guide piece 421 is released, and simultaneously, under the elastic rebounding action of the first spring 423, the button 45 and the unlocking piece 42 will be instantaneously reset, so that the seat 1 is locked again.

[0040] Figure 7 is a schematic perspective view of the safety block. Referring to Figure 7 in combination with Figure 6 and Figure 5 , the side wall of the pressing part 451 is attached to the inner wall of the through hole 418, the side wall of the pressing part 451 is provided with a through hole 4511, the inside of the pressing part 451 is provided with a cavity 4512, the cavity 4512 is in communication with the through hole 4511, and the inner diameter of the cavity 4512 is greater than the inner diameter of the through hole 4511. The through hole 4511 is provided with a safety block 453, the safety block 453 comprises an equal-diameter part 4531 and a variable-diameter part 4532, the outer diameter of the equal-diameter part 4531 is less than or equal to the inner diameter of the through hole 4511, the maximum inner diameter of the variable-diameter part 4532 is greater than the inner diameter of the through hole 4511 and less than the inner diameter of the cavity 4512, and the equal-diameter part 4531 can slide in the through hole 4511 or the cavity 4512, while the variable-diameter part 4532 can only slide in the cavity 4512. The end of the variable-diameter part 4532 is provided with a counterbore 4533, the side of the cavity 4512 away from the through hole 4511 is provided with a containing hole 4513, the containing hole 4513 is coaxially arranged with the counterbore 4533, the cavity 4512 is provided with a third spring 454, one end of the third spring 454 is clamped in the containing hole 4513, and the other end of the third spring 454 is clamped in the counterbore 4533. The outer wall of the variable-diameter part 4532 is further provided with a pair of notches 4534, the pair of notches 4534 are symmetrically arranged on the two sides of the counterbore 4533, the pair of notches 4534 are in communication with the counterbore 4533, the width of the notch 4534 is less than the outer diameter of the third spring 454, and the notch 4534 is arranged to reduce the strength of the variable-diameter part 4532 in the radial direction, so that the variable-diameter part 4532 can be pressed to produce elastic deformation when being installed, and then the variable-diameter part 4532 can pass through the through hole 4511 and enter the cavity 4512.

[0041] The third spring 454 is always in an incompletely compressed state, so that when no external force is applied to the equal-diameter portion 4531, the variable-diameter portion 4532 will press against the communication between the through hole 4511 and the cavity 4512 under the pushing action of the third spring 454, and at the same time, a part of the equal-diameter portion 4531 will be located outside the through hole 4511, so that the equal-diameter portion 4531 and the shell 41 interfere with each other in the vertical direction, so that when the user directly presses the button 45, the pressing portion 451 cannot move under the limiting action of the equal-diameter portion 4531 (i.e., the safety block 453), thereby preventing misoperation and effectively improving the safety of the stroller during use. When the equal-diameter portion 4531 is completely pushed into the through hole 4511 and the button 45 is pressed downward, the safety function of the safety block 453 is released, and the button 45 can be pressed into the shell 41, thereby changing to an unlocked state.

[0042] The present application sets the safety block 453 on the pressing portion 451 of the button 45, so that the user must first press the safety block 453 in the horizontal direction before pressing the button 45 in the vertical direction, effectively improving the safety of the operation and preventing the seat 1 from falling off due to misoperation by children. At the same time, the second limiting member 3 for connecting with the frame is arranged on both sides of the seat 1, and the user can see the plug-in position of the second limiting member 3 on the frame by slightly turning the head, thereby reducing the difficulty of the connection between the seat 1 and the frame and improving the installation efficiency of the seat 1. Further, after the button 45 is pressed into the accommodating groove 419, the first guide member 443 and the second guide member 421 are in a mutual hooking state under the combined action of the second spring 417 and the third spring 454, so that the button 45 and the lock tongue 44 will not automatically rebound after the button 45 is released, so that the user can only hold the seat 1 and lift it downward to realize the disassembly of the seat 1, thereby improving the disassembly efficiency of the seat 1.

[0043] The above embodiments are only preferred embodiments of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and substitutions made by those skilled in the art based on the present application are within the scope of protection of the present application.

Claims

1. A seat mounting adjuster for a pushchair, provided on a side wall of a seat (1), characterised in that, The utility model provides a seat locking device, which comprises a first limiting piece (2), a second limiting piece (3) and a locking assembly (4), the first limiting piece (2) is arranged inside one side of the seat (1), the second limiting piece (3) is arranged outside one side of the seat (1), and the first limiting piece (2) and the second limiting piece (3) are locked through a bolt (20); The locking assembly (4) is movably connected to the outside of the second limiting piece (3), the locking assembly (4) comprises a shell (41) and an unlocking piece (42), the shell (41) is internally provided with a sliding groove (411) and a rotating groove (412) in communication with each other, the unlocking piece (42) is arranged in the rotating groove (412) and can slide up and down in the sliding groove (411), the rotating groove (412) is internally provided with a rotating shaft (43) and a lock tongue (44), the lower part of the lock tongue (44) is sleeved on the rotating shaft (43), the top of the lock tongue (44) is in contact with the bottom of the unlocking piece (42), and the unlocking piece (42) can drive the lock tongue (44) to rotate around the rotating shaft (43); When the upper part of the lock tongue (44) rotates to the outside of the shell (41), the seat (1) is in a locked state, and when the upper part of the lock tongue (44) rotates to the inside of the shell (41), the seat (1) is in an unlocked state.

2. A seat mount adjuster for a stroller according to claim 1, wherein, The sliding groove (411) extends along the height direction of the shell (41), the upper part of the rotating groove (412) communicates with the sliding groove (411), the lower part of the rotating groove (412) is provided with a pair of clamping grooves (413), the two ends of the rotating shaft (43) are respectively and one-to-one arranged in the pair of clamping grooves (413), the lock tongue (44) comprises a wedge-shaped part (441) and a rotating part (442), the rotating part (442) is tubular, the rotating shaft (43) is arranged in the rotating part (442), the wedge-shaped part (441) is arranged at the top of the rotating part (442), the inclined surface of the wedge-shaped part (441) faces away from the seat (1), and the outer diameter of the wedge-shaped part (441) gradually decreases from top to bottom; The side, away from the seat (1), of the shell (41) is provided with an opening (414), and the wedge-shaped part (441) is rotated to the outside of the shell (41) through the opening (414) and is clamped with the vehicle frame.

3. A seat mount adjuster for a stroller according to claim 2, wherein, The two sides of the wedge-shaped part (441) are both provided with a first guide piece (443), and the lower part of the unlocking piece (42) is provided with two second guide pieces (421); the two second guide pieces (421) are respectively and one-to-one located above the two first guide pieces (443). A first inclined surface (4431) is arranged at the top of the first guide (443), a first groove (4432) is arranged on the first guide (443) below the first inclined surface (4431), a second inclined surface (4211) is arranged at the top of the second guide (421), a second groove (4212) is arranged on the second guide (421) below the second inclined surface (4211), and the first inclined surface (4431) and the second inclined surface (4211) interfere with each other in the vertical direction; When the unlocking member (42) moves downward, the first inclined surface (4431) can be clamped into the second groove (4212), and the second inclined surface (4211) can be clamped into the first groove (4432).

4. The seat mount adjuster for a stroller of claim 2, wherein, A limiting block (415) is arranged at the communication position of the sliding groove (411) and the rotating groove (412), a clamping block (422) is arranged on the side wall of the unlocking member (42), a clamping opening (4220) is arranged on the side of the clamping block (422) facing the bottom of the sliding groove (411), a first spring (423) is arranged in the clamping opening (4220), one end of the first spring (423) abuts against the limiting block (415), and the other end of the first spring (423) abuts against the clamping block (422).

5. The seat mount adjuster for a stroller of claim 3, wherein, A limiting hole (4410) is arranged on the side of the wedge-shaped part (441) facing the rotating groove (412), a limiting column (416) is arranged in the rotating groove (412), the limiting column (416) is in the shape of a truncated cone, the inner diameter of the limiting hole (4410) is greater than the minimum outer diameter of the limiting column (416), a second spring (417) is sleeved on the limiting column (416), one end of the second spring (417) abuts against the limiting column (416), and the other end of the second spring (417) abuts against the limiting hole (4410), when the unlocking member (42) moves downward, the second spring (417) is in the compressed state.

6. A seat mount adjuster for a pushchair according to claim 4 or 5, wherein, A button (45) is arranged at the top of the unlocking member (42), the button (45) comprises a pressing part (451) and a connecting part (452), the pressing part (451) and the connecting part (452) are integrally formed and in the shape of T, a through hole (418) is arranged at the top of the shell (41), the pressing part (451) is located on the outer side of the shell (41), and the connecting part (452) extends into the sliding groove (411) and is connected to the unlocking member (42); A containing groove (419) is further arranged in the shell (41), the upper part of the containing groove (419) communicates with the through hole (418), the lower part of the containing groove (419) communicates with the sliding groove (411), the depth of the containing groove (419) is greater than the depth of the sliding groove (411), and when the bottom of the pressing part (451) abuts against the lower part of the containing groove (419), the top of the pressing part (451) is flush with the top of the shell (41).

7. A seat mount adjuster for a stroller according to claim 6, wherein, The side wall of the pressing part (451) is in contact with the inner wall of the through hole (418), and a through hole (4511) is arranged on the side wall of the pressing part (451), an insurance block (453) is arranged in the through hole (4511), one end of the insurance block (453) is arranged in the through hole (4511), and the other end of the insurance block (453) is located outside the through hole (4511) and interferes with the top of the shell (41).

8. A seat mount adjuster for a stroller according to claim 7, wherein, The inside of the pressing part (451) is provided with a cavity (4512) in communication with the through hole (4511), the inner diameter of the cavity (4512) is greater than the inner diameter of the through hole (4511), the insurance block (453) comprises an equal diameter part (4531) and a variable diameter part (4532), the outer diameter of the equal diameter part (4531) is less than or equal to the inner diameter of the through hole (4511), and the maximum inner diameter of the variable diameter part (4532) is greater than the inner diameter of the through hole (4511) and less than the inner diameter of the cavity (4512). The end of the variable diameter part (4532) is provided with a counterbore (4533), the side of the cavity (4512) away from the through hole (4511) is provided with a containing hole (4513), the containing hole (4513) is coaxially arranged with the counterbore (4533), and the cavity (4512) is provided with a third spring (454), one end of the third spring (454) is clamped in the containing hole (4513), and the other end of the third spring (454) is clamped in the counterbore (4533).

9. A seat mount adjuster for a stroller according to claim 8, wherein, The outer wall of the variable diameter part (4532) is further provided with a pair of notches (4534), the pair of notches (4534) are symmetrically arranged on both sides of the counterbore (4533), the pair of notches (4534) are in communication with the counterbore (4533), and the width of the notch (4534) is less than the outer diameter of the third spring (454).

10. The seat mount adjuster for a stroller of claim 8, wherein, When the equal diameter part (4531) is located outside the through hole (4511), the end of the variable diameter part (4532) abuts at the communication position of the through hole (4511) and the cavity (4512), and the third spring (454) is in an incomplete compression state.

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