CN209888912U - Brake mechanism and child stroller with same - Google Patents

Abstract

The utility model discloses a brake mechanism and have children's shallow of this brake mechanism, wherein brake mechanism is including the brake subassembly that makes the wheel braking, be connected with the brake subassembly and make the brake mechanism release the drive assembly who stops and brake, drive assembly is including rotating the brake handle of establishing on the automobile body, with the brake handle cooperation and slide the first driving piece of establishing on the automobile body, rotate and slide the second driving piece of establishing on the automobile body, the traction cable on brake subassembly is fixed to one end, the traction cable mounting of the fixed traction cable other end, first cooperation portion and second cooperation portion have on the automobile body, the second driving piece can match respectively with first cooperation portion and second cooperation portion and merge and throw off the cooperation, the traction cable mounting slides and establishes on the automobile body, and traction cable mounting and second driving piece cooperation. The brake mechanism is convenient to operate, and the brake handle is required to be manually stepped on during braking and braking release, so that misoperation can be avoided, and the use safety performance of the brake mechanism is improved.

Description

Brake mechanism and child stroller with same

Technical Field

The utility model particularly relates to a brake mechanism and have this brake mechanism's children's shallow.

Background

In order to eliminate the potential safety hazard of the stroller during parking, the stroller is generally provided with a brake mechanism, and the brake mechanism in the prior art is complex in structure, inconvenient to operate and easy to operate by mistake, so that the safety performance of the stroller during use is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome prior art not enough, provide a convenient operation, safe brake mechanism.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a brake mechanism has brake and the state of stopping, brake mechanism including the activity set up be used for making the brake subassembly of wheel braking on the automobile body, with brake subassembly connects and is used for ordering the drive assembly of brake subassembly and brake, drive assembly including can set up with rotating brake handle on the automobile body, can set up with sliding first driving piece on the automobile body, can rotate and set up with sliding second driving piece on the automobile body, an end fixed connection be in the traction cable on the brake subassembly, be used for fixed connection the traction cable mounting of another tip of traction cable, first driving piece with the brake handle cooperatees, first cooperation portion and second cooperation portion have on the automobile body, the second driving piece can respectively with first cooperation portion with the cooperation of second cooperation portion is merged and is disengaged, the traction cable fixing piece is slidably arranged on the vehicle body and matched with the second driving piece; when the brake mechanism is in a brake state, the second driving piece is matched with the first matching part, and when the brake mechanism is in a brake release state, the second driving piece is matched with the second matching part.

Preferably, the second driving piece is close to an end of first driving piece has first inclined plane, first driving piece is close to an end of second driving piece has sharp portion, works as when brake mechanism is in the brake state, sharp portion supports and establishes on the first inclined plane, works as when brake mechanism is released from the brake state, through sharp portion with the cooperation on first inclined plane orders about the second driving piece is relative the automobile body slides and rotates.

Further, an end of the first driving member is provided with a second inclined plane, the second inclined plane and the first inclined plane are arranged at intervals along the circumferential direction of the rotation of the second driving member, and when the brake mechanism brakes from the brake releasing state, the tip portion and the second inclined plane are matched to drive the second driving member to slide and rotate relative to the vehicle body.

Preferably, the first fitting portion and the second fitting portion are spaced apart from each other in a circumferential direction of rotation of the second driving member.

Preferably, be provided with the convex part on the second driving piece, the fixed fixing base that is provided with on the automobile body, first cooperation portion is for setting up draw-in groove on the fixing base, second cooperation portion is for setting up the tooth's socket of a tip of fixing base works as when brake mechanism is in the braking state, the convex part card is established in the draw-in groove, works as when brake mechanism is in the state of separating the brake, the convex part card is established in the tooth's socket.

Further, still be provided with the third inclined plane on the fixing base, the third inclined plane is the tank bottom of tooth's socket, when brake mechanism released the brake from the brake state, when the second driving piece with when the third inclined plane matches, the second driving piece atress is relative the automobile body is gliding while can also be relative the automobile body rotates.

Further, still be provided with the fourth inclined plane on the fixing base, the fourth inclined plane is located the inboard of draw-in groove, and is located the draw-in groove is close to a tip of tooth's socket, when brake mechanism is from the state brake of separating, work as the second driving piece with when the fourth inclined plane matches, the second driving piece atress is relative the automobile body is gliding while can also be relative the automobile body rotates.

Preferably, the brake mechanism further comprises a first reset piece which can drive the second driving piece to slide in the direction matched with the first matching part and the second matching part, the first reset piece is arranged between the vehicle body and the traction cable fixing piece, the brake mechanism further comprises a second reset piece which can drive the brake handle to reset in a reverse rotation mode, and the second reset piece is arranged between the vehicle body and the first driving piece.

Preferably, the braking assemblies are arranged on two sides of the vehicle body, the number of the traction cables is two, one end parts of the two traction cables are fixedly arranged on the traction cable fixing part, and the other end parts of the two traction cables are respectively connected with the braking assemblies on two sides.

Preferably, the first driving element, the second driving element and the traction cable fixing element are arranged on the same side part of the brake handle, and an auxiliary component for balancing the stress of the brake handle in the process of braking release or braking is further arranged on the other side part of the brake handle.

Another object of the present invention is to provide a stroller, wherein the stroller has any one of the above-mentioned brake mechanisms.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a brake mechanism simple structure, convenient operation, brake and release all need the people to step on the brake handle to can avoid the maloperation, improve the security performance that this brake mechanism used.

Drawings

FIG. 1 is a schematic view of the brake mechanism of the present invention;

FIG. 2 is an exploded view of the brake mechanism of the present invention;

FIG. 3 is a cross-sectional view of the brake mechanism of the present invention;

FIG. 4 is a schematic mechanism diagram of the fixing base of the present invention;

FIG. 5 is a schematic structural view of the brake mechanism of the present invention in a braking state;

FIG. 6 is an enlarged view of a portion of FIG. 5 at A;

fig. 7 is one of the structural schematic diagrams of the brake mechanism of the present invention in the braking releasing process (the second driving member is disengaged from the first engaging portion);

FIG. 8 is an enlarged view of a portion of FIG. 7 at A;

fig. 9 is a second schematic structural diagram of the brake mechanism of the present invention during the braking process (after the first driving member drives the second driving member to rotate by an angle);

FIG. 10 is an enlarged view of a portion of FIG. 9 at A;

fig. 11 is a third schematic structural view (after the first driving member is reset) of the brake mechanism of the present invention during the brake release process;

FIG. 12 is an enlarged view of a portion of FIG. 11 at A;

fig. 13 is a schematic structural view of the brake mechanism of the present invention in an unlocked state;

FIG. 14 is an enlarged view of a portion of FIG. 13 at A;

fig. 15 is one of the structural schematic diagrams of the braking mechanism of the present invention during braking (the second driving member is disengaged from the second engaging portion);

FIG. 16 is an enlarged view of a portion of FIG. 15 at A;

fig. 17 is a second schematic structural diagram of the brake mechanism of the present invention during the braking process (after the first driving member drives the second driving member to rotate by an angle);

FIG. 18 is an enlarged view of a portion of FIG. 17 at A;

fig. 19 is a third schematic structural view (after the first driving member is reset) of the braking mechanism of the present invention during braking;

FIG. 20 is an enlarged view of a portion of FIG. 19 at A;

fig. 21 is a schematic structural view of the stroller of the present invention.

Wherein: 1. a brake assembly; 2. a vehicle body; 21. a wheel joint; 22. a connecting rod; 23. a fixed seat; 231. a first mating portion; 232. a second mating portion; 233. a third inclined plane; 234. a fourth slope; 3. a brake handle; 4. a first driving member; 41. a tip portion; 5. a second driving member; 51. a convex portion; 52. a first inclined plane; 53. a second inclined plane; 6. a traction cable; 7. a traction cable fixing member; 8. a first reset member; 9. a second reset member; 100. and (7) wheels.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and specific embodiments.

Referring to fig. 1 ~, the brake mechanism arranged on the vehicle body 2 has a braking and an unlocking state, and comprises a brake assembly 1 for braking the wheel 100, and a driving assembly connected with the brake assembly 1 for driving the brake mechanism to brake and unlock.

Preferably, the brake assemblies 1 are respectively used for braking the wheels 100 on both sides of the vehicle body 2, each brake assembly 1 includes a brake pin slidably disposed on the vehicle body 2, the vehicle body 2 includes a wheel connector 21, the wheels 100 are rotatably connected with the wheel connector 21, the brake pins are slidably disposed on the wheel connector 21, a brake disc is fixedly disposed on the wheels 100, at least one locking groove for inserting the brake pin is disposed on the brake disc, when the brake mechanism is in a braking state, the brake pin is inserted into one of the locking grooves, so that the wheels 100 and the wheel connector 21 are fixedly connected together, the wheels 100 cannot rotate relative to the wheel connector 21, when the brake mechanism is in an unlocking state, the brake pin is disengaged from the locking groove, and the wheels 100 can rotate relative to the wheel connector 21.

The driving components are respectively connected with the braking components 1 on the two sides, so that the braking components on the two sides can move relative to the vehicle body 2, and the braking mechanism can brake or brake.

The drive assembly comprises a brake handle 3, a first driving element 4, a second driving element 5, a traction cable 6 and a traction cable fixing element 7. The vehicle body 2 comprises a connecting rod 22 connected between the wheel connectors 21 on two sides, and the brake handle 3 can be rotatably sleeved on the connecting rod 22. The first driving member 4 is sleeved on the connecting rod 22 and slidably arranged along the length extending direction of the connecting rod 22, and the first driving member 4 is matched with the brake handle 3, in this embodiment, the first driving member 4 is matched with the brake handle 3 through an inclined plane. The second driving part 5 is sleeved on the connecting rod 22 and can be matched with or separated from the first driving part 4, the vehicle body 2 further comprises a fixing seat 23 fixedly sleeved on the connecting rod 22, the second driving part 5 is also matched with the fixing seat 23, and the second driving part 5 can rotate and can be arranged in a sliding mode along the length extending direction of the connecting rod 22. The number of the traction ropes 6 is two, one end part of each traction rope 6 is fixedly connected with the brake assembly 1 on one side, and the other end parts of the two traction ropes 6 are fixedly connected with the traction rope fixing part 7, so that synchronous braking and braking release of the wheels 100 on two sides can be guaranteed. The traction cable fixing piece 7 is matched with the second driving piece 5, and the traction cable fixing piece 7 is sleeved on the connecting rod 22 and can be arranged in a sliding mode along the length extending direction of the connecting rod 22. In this embodiment, the traction lock fixing member 7 and the second driving member 5 are in contact fit in a direct abutting manner, but the traction lock fixing member 7 and the second driving member 5 may also be in a snap-fit manner, for example, an annular groove is formed in one of the two components of the traction lock fixing member 7 and the second driving member 5, and a protrusion matched with the annular groove is formed in the other component, and the protrusion is snapped in the annular groove, so that the traction cable fixing member 7 can be ensured to only slide along the connecting rod 22, and the rotation of the second driving member 5 is not affected.

Specifically, the fixing seat 23 is provided with a first matching portion 231 and a second matching portion 232, the first matching portion 231 and the second matching portion 232 are arranged at a certain angle in the circumferential direction of the rotation of the second driving member 5, when the brake mechanism is in the braking state, the second driving member 5 is matched with the first matching portion 231, and when the brake mechanism is in the braking state, the second driving member 5 is matched with the second matching portion 232. When the second driving member 5 is in a completely engaged state with the first engaging portion 231 or the second engaging portion 232, the second driving member 5 can only slide relative to the connecting rod 22 and cannot rotate; when the second driver 5 is disengaged from the first and second engagement portions 231 and 232, the second driver 5 can rotate relative to the link 22.

In this embodiment, as shown in fig. 4, the first engaging portion 231 is a slot disposed on the fixing base 23, the second driving member 5 is disposed with a protrusion 51 engaged with the slot, when the brake mechanism is in a braking state, the protrusion 51 is engaged with the slot, and when the brake mechanism is released, the protrusion 51 is disengaged from the slot. The second engaging portion 232 is a tooth groove formed at one end of the fixed seat 23, and when the braking mechanism is in the braking release state, one end of the protruding portion 51 abuts against the tooth groove, and when the braking mechanism is in the braking release state, the protruding portion 51 is disengaged from the tooth groove.

The end of the second driving member 5 close to the first driving member 4 is respectively provided with a first inclined surface 52 and a second inclined surface 53, the first inclined surface 52 and the second inclined surface 53 are arranged at a certain angle along the circumferential direction of the rotation of the second driving member 5, the end of the first driving member 4 close to the second driving member 5 is provided with a tip portion 41, the tip portion 41 can be abutted against the first inclined surface 52 or the second inclined surface 53, or the tip portion 41 can be completely far away from the first inclined surface 52 or the second inclined surface 53, and the second driving member 5 can be driven to slide and rotate relative to the connecting rod 22 through the matching of the tip portion 41 with the first inclined surface 52 and the second inclined surface 53. In the present embodiment, the first slope 52 is located at one end of the convex portion 51.

As shown in fig. 4, the fixed seat 23 is further provided with a third inclined surface 233 and a fourth inclined surface 234, the third inclined surface 233 is a bottom of the tooth space, the fourth inclined surface 234 is located inside the slot and at an end of the slot close to the tooth space, the first inclined surface 52 on the protrusion 51 can be further engaged with or disengaged from the third inclined surface 233 and the fourth inclined surface 234, respectively, and when the first inclined surface 52 is engaged with the third inclined surface 233 or the fourth inclined surface 234, the second driving member 5 can be driven to rotate relative to the connecting rod 22.

The brake mechanism further comprises a first return member 8, the first return member 8 being disposed between the cable fixing member 7 and the vehicle body 2. In this embodiment, the first restoring member 8 is a compression spring, and two end portions of the compression spring are respectively fixedly connected with the traction cable fixing member 7 and the vehicle body 2. The first reset piece 8 can drive the second driving piece 5 to slide in the direction of matching with the first matching portion 231 and the second matching portion 232.

The brake mechanism further comprises a second reset member 9, the second reset member 9 being arranged between the fixed seat 23 and the first driving member 4. In this embodiment, the second restoring member 9 is a compression spring, and two end portions of the compression spring are respectively fixedly connected with the fixing seat 23 and the first driving member 4. The second reset piece 9 can drive the first driving piece 4 to slide reversely and reset, thereby driving the brake handle 3 to rotate reversely and reset.

The brake assembly 1 further comprises a third return member (not shown in the figures) arranged between the wheel connector 21 and the brake pin. In this embodiment, the third restoring member is a pressure spring, and two end portions of the pressure spring are respectively fixedly connected to the wheel joint 21 and the brake pin. When the two traction ropes 6 of the brake mechanism are in a loose state, the third reset piece can drive the brake pin to reversely slide and reset, so that the brake mechanism is in a brake state again.

In this embodiment, the first driving member 4, the second driving member 5 and the traction cable fixing member 7 are all arranged on the same side of the brake lever 3, so that the brake lever 3 is stressed in a balanced manner during braking or braking release, and the brake mechanism further comprises an auxiliary component arranged on the other side of the brake lever 3. In this embodiment, in order to facilitate the manufacturing of the brake mechanism, the auxiliary component includes a first driving element 4 sleeved on the connecting rod 22 and capable of slidably setting along the length extending direction of the connecting rod 22, a fixing seat 23 fixedly sleeved on the connecting rod 22, and a second resetting element 9 for resetting the first driving element 4 on the other side. The first driving piece 4 on the other side is also matched with the brake handle 3, and the first driving pieces 4 on the two sides are symmetrically arranged. When the brake handle 3 is stepped on to enable the brake handle 3 to rotate relative to the connecting rod 22, the first driving parts 4 on the two sides can synchronously slide back to back through the matching of the brake handle 3 and the first driving parts 4 on the two sides; after the brake handle 3 is released, the first driving parts 4 on the two sides can be driven to synchronously slide in opposite directions under the action of the second resetting parts 9 on the two sides, so that the brake handle 3 is driven to reversely rotate and reset.

The working process of the brake mechanism is as follows:

when the brake mechanism is in a braking state, the convex part 51 on the second driving member 5 is clamped in the clamping groove on the fixed seat 23, the tip part 41 on the first driving member 4 abuts against the middle part of the first inclined surface 51 on the second driving member 5, and the brake pin is inserted in one of the locking grooves on the brake disc, as shown in fig. 5 and 6.

When the brake mechanism needs to be released from a braking state, the brake handle 3 is stepped on, the brake handle 3 rotates relative to the connecting rod 22, and in the rotating process of the brake handle 3, the first driving parts 4 on two sides of the brake handle 3 slide towards the direction far away from the brake handle 3 through the inclined plane matching between the brake handle 3 and the first driving parts 4; when the first driving member 4 slides relative to the connecting rod 22, because the protrusion 51 is clamped in the slot, the first driving member 4 drives the second driving member 5 to slide relative to the fixed seat 23 in a direction away from the fixed seat 23; in the process, the traction cable fixing piece 7 is pushed by the second driving piece 5 to enable the traction cable fixing piece 7 to slide relative to the connecting rod 22, so that the two traction cables 6 are stretched, the two traction cables 6 respectively pull the brake assemblies 1 on two sides, and the brake pins on two sides slide and are gradually separated from the lock grooves on the brake disc; during the sliding process of the traction rope fixing member 7, the first restoring member 8 is compressed until the protrusion 51 is completely removed from the slot, as shown in fig. 7 and 8; when the brake handle 3 is rotated continuously to make the first driving member 4 slide continuously in a direction away from the brake handle 3, because the first driving member 4 and the second driving member 5 are matched with each other through the tip 41 and the first inclined surface 52, the second driving member 5 is rotated by a certain angle around its axis relative to the connecting rod 22, so that the positions of the protrusion 51 and the slot are staggered by an angle, as shown in fig. 9 and 10; when the brake handle 3 is released, the first driving pieces 4 on both sides are driven to slide towards the direction close to the brake handle 3 under the action of the second resetting pieces 9 on both sides, so that the first driving piece 4 on one side is far away from the second driving piece 5, and when the first driving pieces 4 slide towards the direction close to the brake handle 3, the brake handle 3 is rotated and reset in the opposite direction, as shown in fig. 11 and 12; as the first driving member 4 is reset, the acting force on the second driving member 5 disappears, the second driving member 5 slides in the reverse direction under the action of the elastic force of the first resetting member 8, at this time, the first inclined surface 52 on the second driving member 5 partially abuts against the groove bottom of the tooth space, i.e. the third inclined surface 233, and at the same time, as the second driving member 5 slides in the reverse direction, the second driving member 5 continues to rotate relative to the connecting rod 22 along the previous rotation direction due to the interaction of the first inclined surface 52 and the third inclined surface 233 until the first inclined surface 52 and the third inclined surface 233 completely engage, i.e. the protrusion 51 is completely clamped on the side wall of the tooth space of the fixed seat 23, as shown in fig. 13 and 14, at this time, the brake pin is disengaged from the locking groove, and the brake mechanism is in.

When braking is needed, the brake handle 3 is stepped down again, the brake handle 3 rotates, the first driving parts 4 on the two sides slide in the direction away from the brake handle 3 again, after the first driving part 4 on one side slides for a certain distance, the tip 41 of the first driving part 4 abuts against the second inclined surface 53 on the second driving part 5, the brake handle 3 continues to rotate, and the first driving part 4 continues to slide in the same direction until the convex part 51 on the second driving part 5 completely falls out of the tooth groove on the fixed seat 23, as shown in fig. 15 and 16; when the brake handle 3 is rotated continuously to make the first driving member 4 slide away from the brake handle 3 continuously, the first driving member 4 and the second driving member 5 rotate a certain angle around the axis of the second driving member 5 relative to the connecting rod 22 by the way that the tip 41 and the second inclined surface 53 are matched, and the convex part 51 and the tooth socket are staggered by a certain angle, as shown in fig. 17 and 18; the brake handle 3 is released, and the brake handle 3 and the first driving member 4 are reset under the action of the second resetting member 9, as shown in fig. 19 and 20; as the force of the first driver 4 on the second driver 5 is removed, the second driver 5 and the traction cable fixing element 7 slide in opposite directions under the influence of the spring force of the first return element 8, when the first inclined surface 52 of the second driving member 5 abuts against the fourth inclined surface 234 of the fixed seat 23, the second driving member 5 continues to rotate in the previous direction of rotation relative to the link 22, while sliding in the opposite direction, until the projection 51 is opposite to the position of the slot, then the second driving element 5 makes the convex part 51 insert into the slot under the elastic force of the first restoring element 8, the process makes the two traction ropes 6 gradually loosen, when the protrusion 51 is fully inserted into the slot, as shown in fig. 5 and 6, the two traction cables 6 are fully released, the brake pin slides in the direction of being inserted into the lock slot under the elastic force of the third restoring member until being inserted into the lock slot, and the brake mechanism is in a braking state.

To sum up, the utility model discloses a brake mechanism simple structure, accessible drive assembly make the wheel of both sides be in the brake simultaneously and the state of separating to stop, convenient operation, the brake all need artificially to step on the brake handle with separating to stop in addition to can avoid the maloperation, improve the security performance that this brake mechanism used.

The utility model also discloses a children's shallow, as shown in fig. 21, this children's shallow has foretell brake mechanism, because of brake mechanism has above-mentioned technological effect, the event has this brake mechanism's children's shallow also has above-mentioned technological effect.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (11)

1. The utility model provides a brake mechanism, has brake and the state of deblocking, brake mechanism including the activity set up on the automobile body be used for making the braking of wheel subassembly, with the braking subassembly is connected and is used for ordering the actuating assembly that the braking subassembly was deblocked and is braked which characterized in that: the driving assembly comprises a brake handle which can be rotatably arranged on the vehicle body, a first driving piece which can be slidably arranged on the vehicle body, a second driving piece which can be rotatably and slidably arranged on the vehicle body, a traction cable of which one end is fixedly connected to the braking assembly, and a traction cable fixing piece which is used for fixedly connecting the other end of the traction cable, wherein the first driving piece is matched with the brake handle, the vehicle body is provided with a first matching part and a second matching part, the second driving piece can be respectively matched with and separated from the first matching part and the second matching part, the traction cable fixing piece can be slidably arranged on the vehicle body, and the traction cable fixing piece is matched with the second driving piece; when the brake mechanism is in a brake state, the second driving piece is matched with the first matching part, and when the brake mechanism is in a brake release state, the second driving piece is matched with the second matching part.

2. The brake mechanism of claim 1, wherein: the second driving piece is close to a tip of first driving piece has first inclined plane, first driving piece is close to a tip of second driving piece has sharp portion, works as when brake mechanism is in the brake state, sharp portion supports and establishes on the first inclined plane, works as when brake mechanism is relieved from the brake state, through sharp portion with the cooperation on first inclined plane orders about the second driving piece is relative the automobile body slides and rotates.

3. The brake mechanism of claim 2, wherein: a tip of the first driving piece is provided with a second inclined plane, the second inclined plane and the first inclined plane are arranged at intervals in the circumferential direction of the rotation of the second driving piece, and when the brake mechanism brakes from the brake releasing state, the tip part and the second inclined plane are matched to drive the second driving piece to be relative to the vehicle body to slide and rotate.

4. The brake mechanism of claim 1, wherein: the first matching part and the second matching part are arranged at intervals along the circumferential direction of the rotation of the second driving piece.

5. The brake mechanism of claim 1, wherein: be provided with the convex part on the second driving piece, the fixed fixing base that is provided with on the automobile body, first cooperation portion is for setting up draw-in groove on the fixing base, second cooperation portion is for setting up the tooth's socket of a tip of fixing base works as when brake mechanism is in the brake state, the convex part card is established in the draw-in groove, works as when brake mechanism is in the state of separating the brake, the convex part card is established in the tooth's socket.

6. The brake mechanism of claim 5, wherein: still be provided with the third inclined plane on the fixing base, the third inclined plane is the tank bottom of tooth's socket, when brake mechanism released the brake from the brake state, work as the second driving piece with when the third inclined plane matches, the second driving piece atress is relative the automobile body is gliding while can also be relative the automobile body rotates.

7. The brake mechanism of claim 5, wherein: still be provided with the fourth inclined plane on the fixing base, the fourth inclined plane is located the inboard of draw-in groove, and is located the draw-in groove is close to a tip of tooth's socket, when brake mechanism is from the state brake of separating, work as the second driving piece with when the fourth inclined plane matches, the second driving piece atress is relative can also be relative when the automobile body is gliding the automobile body rotates.

8. The brake mechanism of claim 1, wherein: brake mechanism still including can order about the second driving piece to with first cooperation portion with the gliding first piece that resets of second cooperation portion complex direction, first piece setting that resets is in the automobile body with between the haulage cable mounting, brake mechanism still includes and can order about the second piece that resets of brake to the antiport, the second resets the setting and is in the automobile body with between the first driving piece.

9. The brake mechanism of claim 1, wherein: the braking assemblies are arranged on two sides of the vehicle body, the two traction cables are arranged, one end portions of the two traction cables are fixedly arranged on the traction cable fixing piece, and the other end portions of the two traction cables are respectively connected with the braking assemblies on two sides.

10. The brake mechanism of claim 1, wherein: the first driving piece, the second driving piece and the traction cable fixing piece are all arranged on the same side of the brake handle, and an auxiliary assembly used for balancing the stress of the brake handle in the brake releasing or braking process is further arranged on the other side of the brake handle.

11. A stroller, characterized in that the stroller comprises a brake mechanism according to claim 1 ~ 10.

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