CN212709636U - Linkage type brake mechanism and baby carriage - Google Patents

Abstract

The utility model relates to the technical field of baby products, in particular to a linkage type brake mechanism and a baby carriage; the bicycle comprises a connecting shaft and wheels movably connected to the end part of the connecting shaft, wherein the wheels can rotate relative to the connecting shaft and further comprise a handle, a traction assembly and a brake assembly; the brake assembly is sleeved on the connecting shaft, one end of the traction assembly is connected to the handle, and the other end of the traction assembly acts on the connecting shaft; the brake assembly is driven to lock or unlock the wheel by pulling and/or rotating the handle; the safety performance of the brake is improved, and the brake is not easy to damage.

Description

Linkage type brake mechanism and baby carriage

Technical Field

The utility model relates to a articles for babies technical field, concretely relates to linkage type brake mechanism and perambulator.

Background

The baby carriage is a tool carriage which is designed for providing convenience for outdoor activities of babies, is also a favorite walking vehicle for babies, and is an essential product for mothers to go shopping on the street with the babies. However, the baby carriage can be divided into various types according to the growth and usage of the baby. Mainly according to the standard of the load capacity, and the general test standard is nine to fifteen kilograms. A typical stroller may be used for approximately four to five years; and most families are two babies at present, the number of babies is not increased, and the market prospect of the baby carriage has great potential.

However, there are a number of significant disadvantages with current strollers: firstly, the brake mechanism of the existing baby carriage is often provided with a brake pad at a wheel, and a person needs to bend down or strongly tread the brake pad with feet to lock the baby carriage, so that the arrangement is easy to cause the damage of the brake pad on one hand, and on the other hand, the old people have many situations when carrying children at present, and the old people are inconvenient to bend down; secondly, the brake block is damaged easily and can not brake effectively, can not brake and make the perambulator have very big potential safety hazard, for example many case reports, because forget brake and can not brake, the perambulator free slip for the baby in the perambulator is injured.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a security performance is high and be difficult to destroyed coordinated type brake mechanism and perambulator.

In order to achieve the purpose, the main technical solution of the present invention is a linkage type brake mechanism, which comprises a connecting shaft movably connected with a wheel, wherein the wheel can rotate relative to the connecting shaft; the device is characterized by also comprising a handle, a traction component and a brake component; the brake assembly is sleeved on the connecting shaft, one end of the traction assembly is connected to the handle, and the other end of the traction assembly acts on the connecting shaft; the brake assembly is actuated to lock or unlock the wheel by pulling and/or rotating the handle.

In some examples, the traction assembly includes a traction rope and a shaft sleeve connected to one end of the traction rope, the shaft sleeve is sleeved on the connecting shaft, the other end of the traction rope is connected to the handle, and the shaft sleeve and the connecting shaft rotate circumferentially synchronously.

In some examples, the brake assembly comprises a trigger piece sleeved on the connecting shaft, a brake pin assembly and a rotating disc rotating synchronously with the wheel; the brake pin assembly is sleeved at the end of the connecting shaft and located between the trigger assembly and the rotating disc, at least one locking groove is circumferentially arranged on the side wall of the rotating disc facing the brake pin assembly, the brake pin assembly comprises a pin shaft, the trigger assembly can drive the pin shaft to axially move relative to the brake pin assembly, and then the pin shaft is placed in or moved out of the locking groove, so that a locking or unlocking state is realized.

In some examples, the brake pin subassembly includes the fixing base, the fixing base cover is established the tip of even axle, the round pin axle runs through the setting in the fixing base and can axial displacement through the elastic component that resets, and the trigger part acts on the one end of round pin axle and can make the other end of round pin axle put into or shift out the locked groove.

In some examples, when the trigger piece and the connecting shaft rotate synchronously and circumferentially, at least one part of the side wall of the trigger piece facing the brake pin assembly is provided with a convex block, the top surface of the convex block is a concave arc surface, when the trigger piece and the connecting shaft are in a locking state, the arc surface is abutted against one end of the pin shaft, and one side wall surface of the convex block is an inclined leading-in surface for guiding one end of the brake pin into the arc surface.

In some examples, when the trigger member moves axially relative to the shaft, the trigger member is pushed or pulled, which causes the trigger member and thus the pin to move into or out of the lock groove.

In some examples, the round pin axle includes round pin axle part and conflict portion, round pin axle part passes through the elastic component and connects in the conflict portion, the trigger piece acts on the conflict portion.

Still provide a perambulator, include foretell coordinated type brake mechanism.

The utility model discloses owing to adopted above technical scheme to realize following effect:

the handle is rotated, the linkage brake mechanism carries out brake processing on the baby carriage, manual pressing of a switch is not needed, and operation is carried out on each brake pad respectively, so that the baby carriage is convenient and efficient.

And the structure and the linkage mode of the brake mechanism are simple and easy to operate, and even the old does not need to excessively bend to operate the brake pad.

Drawings

Figure 1 is a schematic structural view of an embodiment of the present invention,

figure 2 is a schematic structural view of the stroller of the embodiment of figure 1,

figure 3 is a schematic structural view of the folding frame of the embodiment of figure 1,

figure 4 is a schematic view of the folding chassis of the embodiment of figure 1,

figure 5 is a schematic view of the first folding mechanism of the embodiment of figure 1 in combination with a latch assembly,

figure 6 is an exploded view of the first pendulum and locking assembly of the embodiment of figure 1,

figure 7 is a schematic diagram of the second folding mechanism of the embodiment of figure 1,

figure 8 is a schematic view of the locking block of the embodiment of figure 1 against a second swing,

figure 9 is a schematic structural view of the brake assembly of the embodiment of figure 1,

figure 10 is an exploded view of the brake assembly of the embodiment of figure 1,

figure 11 is a schematic view of the stroller of the embodiment of figure 1 in a folded configuration,

figure 12 is a side view of the stroller of the embodiment of figure 1 in a collapsed configuration,

figure 13 is a schematic view of the stroller of the embodiment of figure 1 in a braking state,

figure 14 is a schematic view of the trigger of the embodiment of figure 1,

in the figure: the brake assembly 1, the handle 11, the control body 111, the support body 112, the hook 113, the locking member 114, the trigger 12, the protrusion block 121, the brake pin assembly 13, the fixing seat 131, the pin 132, the rotating disc 14, the connecting shaft 15, the folding frame 2, the second folding mechanism 21, the second intermediate member 211, the locking button 2111, the locking block 2112, the second swinging member 212, the push rod 213, the first folding mechanism 22, the first intermediate member 221, the first swinging member 222, the locking hole 2221, the support rod 223, the chassis 224, the locking assembly 225, the locking column 2251, the sleeve 2252, the side frame 23, the wheel 3, the axle 31, the support frame 4, the table top 5, the fixing sleeve 6, the traction rope 7 and the traction rope 8.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purpose of limitation.

It is to be understood that the terms "a" and "an" are to be interpreted as meaning that a number of one element may be one in one embodiment or multiple in another embodiment, and the terms "a" and "an" are not to be interpreted as limiting the number.

The first embodiment is as follows:

referring to fig. 1 to 14 of the drawings attached to the present specification, a stroller according to a preferred embodiment of the present invention is illustrated, which includes a foldable frame 2 capable of being folded and stored, and a linkage type brake mechanism, and wheel assemblies at four corner ends of the bottom of the foldable frame 2, the wheel assemblies including wheels 3; the linkage type brake mechanism is mainly used for controlling the baby carriage to move and is arranged at the bottom of the folding frame 2.

Specifically, in the present embodiment, the folding frame 2 includes two side frames 23, a bottom frame, and a top frame, which are oppositely disposed; the bottom frame comprises two first folding mechanisms 22 and a bottom frame 224, and the top frame comprises two second folding mechanisms 21 and a top rod 213; the two side frames 23 are a front side frame and a rear side frame respectively, and two front wheels 3 are arranged at the bottom of the front side frame; the two ends of the first folding mechanism 22 are respectively connected with the bottom frame 224, so as to form a bottom frame; in order to ensure the turning synchronism and the turning alignment, the two first folding mechanisms 22 are connected through a support rod 223, the base frame 224 is in an H shape, and the other end of the base frame 224 is hinged to the bottom of the side frame 23; two ends of the second folding mechanism 21 are respectively connected with a top rod 213 to form a top frame, and the other end of the top rod 213 is hinged to the top of the side frame 23; as shown in fig. 11 and 12, the bottom frame 224 can be folded upward and folded back with respect to the first folding mechanism 22, and the top bar 213 can be folded downward and folded back with respect to the second folding mechanism 21, thereby achieving the unfolded or folded state of the folding frame 2.

Further, the first folding mechanism 22 includes a first intermediate member 221, and two ends of the first intermediate member 221 are respectively hinged with a first swinging member 222, the other end of the first swinging member 222 is connected to the bottom frame 224, the rotating angle range of the first swinging member 222 relative to the first intermediate member 221 is 0 to 90 °, so as to realize the unfolding or folding state of the first folding mechanism 22; the arc-shaped wall surfaces of the two first swinging members 222 are tooth surfaces and rotate in mesh with each other; at least one part of the first swinging members 222 is an abutting part, and when the first folding mechanism 22 is in the unfolded state, the abutting parts of the two first swinging members 222 are in abutting position; the second folding mechanism 21 includes a second intermediate member 211 and a second swinging member 212 hinged to two ends of the second intermediate member 211 respectively; the other end of the second swinging member 212 is connected with the top rod 213, and the rotating angle range of the second swinging member 212 relative to the second intermediate member 211 is 0-90 degrees, so that the unfolding or folding state of the second folding mechanism 21 is realized; as shown in fig. 7 and 8, the second intermediate member 211 is provided with a locking key 2111, and the locking key 2111 is provided with a locking block 2112; when the second folding mechanism 21 is in the unfolded state, the locking block 2112 abuts against the second swinging member 212, and when the locking key 2111 is pressed, the locking block 2112 falls down, and the second folding mechanism 21 can be folded freely; the side frame 23 comprises two beams and two pillars which are sequentially enclosed, at least the upper half part of each pillar is bent outwards, the caliber of a frame body formed by enclosing the tops of the second folding mechanism 21 and the side frame 23 is larger than that of a frame body formed by enclosing the bottoms of the first folding mechanism 22 and the side frame 23, and at least the middle part of each beam at the top of the side frame 23 is of an upward protruding structure which is convenient for being held by hands; as shown in fig. 11 and 12, the first folding mechanism 22 and the second folding mechanism 21 can perform offset folding during folding.

Of course, in some embodiments, the first folding mechanism 22 is used as a driving folding mechanism, and the second folding mechanism 21 is used as a driven folding mechanism, in this embodiment, the second folding mechanism 21 does not need to be provided with the locking button 2111, and only the second swinging member 212 and the second intermediate member 211 need to be hinged, and when the first folding mechanism 22 is folded, the second folding mechanism 21 is also folded.

In order to ensure that when the first folding mechanism 22 is unfolded, the first swinging member 222 is more stably abutted and the situation of excessive folding is avoided, the first folding mechanism 22 further comprises a locking assembly 225, the locking assembly 225 comprises a locking column 2251 and a sleeve 2252, the locking column 2251 is sleeved with an elastic member and is arranged in an inner cavity of the sleeve 2252, one end of the elastic member abuts against the locking column 2251, and the other end of the elastic member abuts against the inner wall of the sleeve 2252; a locking hole 2221 is formed in the first swinging member 222, a through hole is formed in the first intermediate member 221, and one end of the sleeve 2252 is fixedly connected to the same side wall of the through hole and is coaxial with the through hole; when the first folding mechanism 22 is in the unfolded state, the locking hole 2221 coincides with the through hole, and the locking column 2251 can penetrate through the locking hole 2221 and the through hole; one end of the lock cylinder 2251 exposed to the outside is a pulling end, and the other end can penetrate through the through hole and be inserted into the lock hole 2221; the lock cylinder 2251 is axially moved by releasing the pull-up end, so as to realize an unlocking or locking state; the end of the other end of the lock column 2251 is arc-shaped, at least one section of the outer wall of the pulling end is provided with a thread, the outer wall provided with the thread is wound with a pull rope 8, the lock column 2251 can be pulled out of the lock hole 2221 only by pulling the pull rope 8 axially and then pulling the pull rope 8 upwards, at this time, the first folding mechanism 22 can be folded freely, and as long as the pull rope 8 is loosened, the lock column 2251 is locked into the lock hole 2221 again under the action of the elastic element, the first folding mechanism 22 cannot be folded freely; further, the two diametrically opposite pulling ends are wound and connected by a pulling rope 8.

In this embodiment, the first folding mechanism 22 includes two locking assemblies 225, each locking hole 2221 corresponds to one locking assembly 225, and the two locking assemblies 225 can be unlocked or locked simultaneously; the cross section of the first intermediate member 221 is a U-shape with an opening facing downward, and the first swinging member 222 is located in the U-shaped chamber of the first intermediate member 221.

The baby carriage also comprises a support frame 4 for a baby carriage seat, the support frame 4 is positioned in the folding frame 2, the support frames 4 are respectively hinged on the side frames 23, and when the folding frame 2 is folded and stored, the support frame 4 is turned over relative to the side frames 23, so that the storage is convenient; in addition, many families are two or more babies at present, and in order to adapt to the number of babies at present, the baby stroller comprises two support frames 4, the two support frames 4 are arranged in the folding frame 2 in a radial opposite manner, and the two support frames 4 are respectively hinged to the two side frames 23, so that at least two babies can be seated on the baby stroller at the same time.

In this embodiment, the stroller further comprises a table top 5, when the second folding mechanism 21 is in the unfolded state, two ends of the table top 5 are respectively erected on the second folding mechanism 21, and the frame formed by enclosing the top of the second folding mechanism 21 and the top of the side frame 23 is divided into two areas, which can support two infants facing each other, and further, the table top 5 comprises a common table top and cup slots symmetrically arranged for holding water cups.

In order to prevent the hands of the infant from touching the hinged end and being clamped, in this embodiment, the other end of the push rod 213 is hinged to an adapter kit for preventing hands from being clamped, the adapter kit is arranged at the corner end of the top of the side frame 23, the other end of the push rod 213 is wrapped in the inner cavity of the adapter kit, and the push rod 213 can rotate relative to the adapter kit.

The linkage type brake mechanism comprises a connecting shaft 15 movably connected with the wheel 3, the wheel 3 can independently rotate relative to the connecting shaft 15, namely the connecting shaft 15 is sleeved on an axle 31 of the wheel 3, and the rear wheel 3 is a rear wheel 3; it is also possible to implement the axle 31 with a bearing on the body, which is connected to the inner cavity of the connecting shaft 15 through the bearing, so as to realize the independent rotation of the rear wheel 3 relative to the connecting shaft 15.

Further, the linkage type brake mechanism further comprises a handle 11, a traction assembly and a brake assembly 1, in this embodiment, the handle 11 comprises a first folding body and a second folding body, the first folding rod is used as a support main body 112, the support main body 112 is a part which is connected with the folding frame 2 and plays a supporting role, the second folding rod is used as a control main body 111, the control main body 111 is a control rod for operating the direction of the baby carriage, and the control main body 111 can be folded relative to the support main body 112; in order to avoid the folding effect caused by no need of folding, in this embodiment, an external locking element 114 is disposed at the hinged end between the supporting body 112 and the control body 111, the locking element 114 includes a locking part and a connecting part hinged to the locking part, the locking part can be fastened to the connecting part, the connecting part is fixedly sleeved at the bottom of the control body 111, the locking part is fixedly sleeved at the top of the supporting body 112, and when the locking part is fastened to the connecting part, the supporting body 112 is fixedly positioned with respect to the control body 111, and the folding cannot be performed; when the locking part is unlocked, the supporting body 112 can be folded relative to the control body 111; the bottom of the support body 112 is hinged to the bottom cross member of one of the side frames 23, so that the handle 11 is rotated with respect to said side frame 23; in order to prevent the handle 11 from tilting without any other force due to an excessively large rotation angle of the handle 11, in this embodiment, a shaft rod is disposed inside the side frame 23, a link mechanism for limiting the rotation angle of the handle 11 is sleeved on the shaft rod, and the other end of the link mechanism is hinged to the support main body 112; when the handle 11 rotates to the maximum angle, the supporting body 112, the link mechanism and the shaft rod form a triangular area, which has certain stability; in addition, as shown in fig. 11 and 12, a hook 113 is hinged on the control main body 111, when the folding frame 2 is in the folding and accommodating state, the control main body 111 is folded relative to the support main body 112, and the hook 113 can be hooked on a protruding structure on the cross beam at the top of the other side frame 23, so as to form a lifting frame, which is convenient for holding and lifting the whole stroller.

In this embodiment, the traction assembly includes a traction rope 7 and a shaft sleeve connected to one end of the traction rope 7, the shaft sleeve is sleeved on the connecting shaft 15, the other end of the traction rope 7 is connected to the bottom of the support main body 112, and the shaft sleeve is further driven to rotate circumferentially by rotating the control main body 111; further, the shaft sleeve and the connecting shaft 15 rotate in the circumferential direction synchronously.

It should be noted that, in the present embodiment, the brake assembly 1 includes a trigger 12 sleeved on a connecting shaft 15, a brake pin assembly 13, and a rotating disc 14 rotating synchronously with the wheel 3; the brake pin assembly 13 is sleeved at the end of the connecting shaft and is located between the trigger assembly 12 and the rotating disc 14, at least one locking groove is circumferentially arranged on the side wall of the rotating disc 14 facing the brake pin assembly 13, the brake pin assembly 13 comprises a pin shaft 132, the trigger assembly 12 can drive the pin shaft 132 to axially move relative to the brake pin assembly 13, and then the pin shaft 132 is placed in or moved out of the locking groove, so that a locking or unlocking state is realized; the brake pin assembly 13 further includes a fixing seat 131, the fixing seat 131 is sleeved on the end portion of the connecting shaft 15, the pin shaft 132 is arranged in the fixing seat 131 in a penetrating manner through a reset elastic member and can move axially, the trigger member 12 acts on one end of the pin shaft 132 and can enable the other end of the pin shaft 132 to be placed in or moved out of the locking groove; the embodiment that the triggering part 12 drives the pin shaft 132 to move axially is two, one is that the triggering part 12 and the connecting shaft 15 rotate synchronously and circumferentially, so that the pin shaft 132 moves axially; alternatively, the trigger member 12 is axially movable relative to the shaft 15 to axially move the pin 132.

In this embodiment, the former embodiment is adopted, the triggering member 12 is fixedly sleeved on the end of the connecting shaft 15, the connecting shaft 15 rotates circumferentially relative to the fixing seat 131, the handle 11 rotates to drive the shaft sleeve and the connecting shaft 15 to rotate circumferentially synchronously, and the triggering member 12 is further linked to rotate circumferentially, at least one part of the side wall surface of the triggering member 12 facing the pin 132 is provided with a limiting groove along the circumferential direction, a protruding block 121 is arranged in the limiting groove, the top surface of the protruding block 121 is a downward-recessed arc surface, and one side wall surface of the protruding block 121 is an inclined lead-in surface for guiding one end of the pin 132 to enter the arc surface; when the braking action is not performed, one end of the pin shaft 132 is placed in the clearance area of the limiting groove; when the trigger 12 rotates circumferentially, the guiding surface gradually abuts against one end of the pin 132 and guides one end of the pin 132 onto the arc surface to be abutted and locked, so that the pin 132 moves axially towards the lock groove direction, and the other end of the pin 132 is pushed into the lock groove, thereby realizing the braking effect; when the trigger 12 is rotated in the opposite direction, the pin 132 falls back to the clearance area from the arc surface, and under the action of the reset elastic member, the pin 132 is separated from the locking groove, so as to unlock the lock.

If the latter embodiment is adopted, structures such as the protruding block 121 do not need to be arranged, and the triggering member 12 pushes and presses one end of the pin shaft 132, so that the pin shaft 132 axially moves relative to the fixed seat 131, and the other end of the pin shaft 132 is placed in the locking groove, thereby realizing the braking effect; further, in some embodiments, the shaft sleeve is movably sleeved on the connecting shaft 15, the shaft sleeve can rotate circumferentially relative to the connecting shaft 15 and move axially towards the trigger 12, and the shaft sleeve abuts against the trigger 12, so that the trigger 12 moves axially towards the pin 132, and the pin 132 is further pressed; in addition, a reset elastic element is disposed between the fixing seats 131 of the triggering element 12, and when the shaft sleeve does not abut against the triggering element 12, the triggering element 12 returns to the initial position, so that the pin 132 is reset and then unlocked.

In addition, an embodiment is adopted as the shaft sleeve to rotate in the circumferential direction and move axially towards the trigger member 12, and meanwhile, the trigger member 12 is driven to rotate in the circumferential direction and move axially towards the pin shaft 132.

In this embodiment, the pin 132 includes a pin 132 portion and an abutting portion, the pin 132 portion is connected to an inner cavity of the abutting portion through an elastic member, wherein the side wall surface or the protruding block 121 of the trigger 12 acts on the abutting portion, and the advantage of the design is that the pin 132 plays a role of buffering when being placed in the lock groove; if only the pin 132 is used alone, the locking groove is easily worn during the process of being placed in the locking groove.

In an embodiment, the two pulling ropes 7 are arranged in parallel up and down and are respectively connected to the supporting body 112 and the shaft sleeve, when the handle 11 rotates, one pulling rope 7 is in tension, and the other pulling rope is in slack, so as to ensure that the shaft sleeve returns to the original position.

In addition, the fixed seat 131 is fixedly connected to the bottom of the rear side frame 23, a fixed sleeve 6 is fixedly sleeved on a cross beam at the bottom of the rear side frame 23, the fixed sleeve 6 is provided with two guide through holes for guiding the traction rope 7 to be connected to the shaft sleeve, and the traction rope 7 penetrates through the guide through holes to be connected to the shaft sleeve.

In addition, in the stroller of the present embodiment, a baby basket is placed in the foldable frame 2 with the table panel 5 removed, and the baby basket can be placed on the two supporting frames 4, so as to form a crib for a baby to sleep.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention.

The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (8)

1. A linkage type brake mechanism comprises a connecting shaft (15) movably connected with a wheel (3), wherein the wheel (3) can rotate relative to the connecting shaft (15); the device is characterized by also comprising a handle (11), a traction component and a brake component (1); the brake assembly (1) is sleeved on the connecting shaft (15), one end of the traction assembly is connected to the handle (11), and the other end of the traction assembly acts on the connecting shaft (15); the brake assembly (1) is driven to lock or unlock the wheel (3) by pulling and/or rotating the handle (11).

2. The linkage type brake mechanism according to claim 1, wherein the traction assembly comprises a traction rope (7) and a shaft sleeve connected with one end of the traction rope (7), the shaft sleeve is sleeved on a connecting shaft (15), the other end of the traction rope (7) is connected to the handle (11), and the shaft sleeve and the connecting shaft (15) synchronously rotate in the circumferential direction.

3. The linkage type brake mechanism according to claim 1, wherein the brake assembly (1) comprises a trigger member (12) sleeved on a connecting shaft (15), a brake pin assembly (13) and a rotating disc (14) rotating synchronously with the wheel (3); brake round pin subassembly (13) cover is established at the tip of even axle (15) and is located between trigger part (12) and rolling disc (14), at least one locked groove has been arranged to rolling disc (14) circumference on the lateral wall towards brake round pin subassembly (13), brake round pin subassembly (13) include a round pin axle (132), trigger part (12) can order about round pin axle (132) brake round pin subassembly (13) axial displacement relatively, and then make round pin axle (132) put into or shift out the locked groove, realize locking or unblock state.

4. The linkage type brake mechanism according to claim 3, wherein the brake pin assembly (13) comprises a fixed seat (131), the fixed seat (131) is sleeved on the end of the connecting shaft (15), the pin shaft (132) is arranged in the fixed seat (131) in a penetrating manner through a resetting elastic component and can move axially, and the trigger component (12) acts on one end of the pin shaft (132) and can enable the other end of the pin shaft (132) to be placed in or moved out of the lock groove.

5. The linkage type brake mechanism according to claim 3, wherein when the trigger member (12) and the connecting shaft (15) synchronously rotate circumferentially, at least a part of the side wall of the trigger member (12) facing the brake pin assembly (13) is provided with a protruding block (121), the top surface of the protruding block (121) is a concave arc surface, when the trigger member is in the locking state, the arc surface abuts against one end of the pin shaft (132), and a side wall surface of the protruding block (121) is an inclined leading-in surface for guiding one end of the brake pin into the arc surface.

6. The coupled brake mechanism of claim 3, wherein when the trigger member (12) is moved axially relative to the shaft (15), the trigger member (12) is pushed or pulled to move the trigger member (12) and thus the pin (132) into or out of the slot.

7. The coupled brake mechanism of claim 3, wherein the pin shaft (132) comprises a pin shaft portion and an abutting portion, the pin shaft portion is connected in the abutting portion through an elastic member, and the trigger member (12) acts on the abutting portion.

8. A stroller comprising the coupled brake mechanism of any one of claims 1 to 7.

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