CN210555064U - Folding mechanism and child carrier - Google Patents

Abstract

The utility model discloses a folding mechanism and children carrier, this folding mechanism includes the bearing part pipe joint, relies on partial pipe joint and the bearing part mounting that clamps in proper order, folding mechanism still has connecting piece and locking piece, the connecting piece sets up between bearing part pipe joint and relies on partial pipe joint, the inboard cartridge of connecting piece is on bearing part pipe joint, still is provided with the elastic component between connecting piece and the bearing part pipe joint, the outside of connecting piece has the mortise lock that inserts the bearing part mounting after passing and relying on partial pipe joint; the outer side of the connecting piece is provided with a pressure receiving part, and the relying partial pipe joint is provided with a pushing part matched with the pressure receiving part; the locking piece is located in the dependence part pipe joint, the connecting piece is provided with a locking part, and the locking piece is connected with the unlocking unit. The folding mechanism has reasonable and compact structure and convenient operation. The utility model discloses the children's carrier who contains this mechanism of folding up is disclosed simultaneously.

Description

Folding mechanism and child carrier

Technical Field

The utility model relates to a child carrier and folding mechanism thereof specifically refer to folding mechanism and child carrier.

Background

The child carrier is used as a carrier for carrying infants and children, reduces the burden of carrying the infants and children when people go out, and is a necessary article for families of the infants and children.

The children carrier comprises a frame body, wheels, a bearing part and a relying part, wherein the bearing part is installed on the frame body, the relying part is connected with the bearing part or the frame body in an articulated mode, so that the relying part is adjusted in a rotating mode, the children carrier can be folded, the size is reduced, and the children carrier is convenient to carry and transport.

However, the existing folding mechanisms are complex, have many parts, unreasonable structure and inconvenient operation.

SUMMERY OF THE UTILITY MODEL

One of the objectives of the present invention is to provide a folding mechanism, which is reasonable and compact in structure and convenient to operate.

The above object of the present invention is achieved by the following technical solutions: folding mechanism, including the bearing part pipe joint that clamps in proper order, rely on partial pipe joint and bearing part mounting, the bearing part mounting is located the bearing part outside, relies on partial pipe joint to rotate with bearing part pipe joint and bearing part mounting respectively and is connected, folding mechanism still has connecting piece and locking piece, its characterized in that: the connecting piece is arranged between the bearing part pipe joint and the relying part pipe joint, the inner side of the connecting piece is inserted on the bearing part pipe joint, an elastic piece is further arranged between the connecting piece and the bearing part pipe joint, and the outer side of the connecting piece is provided with a mortise lock which penetrates through the relying part pipe joint and then is inserted with the bearing part fixing piece; the outer side of the connecting piece is provided with a pressure receiving part, and the relying partial pipe joint is provided with a pushing part matched with the pressure receiving part; the locking piece is located in the dependence part pipe joint, the connecting piece is provided with a locking part, and the locking piece is connected with the unlocking unit.

The utility model discloses a mechanism of folding up relies on part and bears the weight of when the part is in the state of extending, and the locking piece is pegged graft mutually with the locking part of connecting piece, and the connecting piece is located latched position, and the mortise lock cartridge of connecting piece bears the weight of the part mounting this moment, bears the weight of the part pipe joint and relies on the part pipe joint all to be in the locked state.

When need fold up dependence part and load-bearing part, pull locking piece through the unblock unit and break away from the locking portion of connecting piece, rely on partial pipe joint unblock, dependence partial pipe joint after the unblock can carry out circumferential direction with the load-bearing part pipe joint relatively, rely on partial pipe joint rotation process to bulldoze the compression portion of connecting piece through bulldozing the portion, make the connecting piece to the direction axial displacement who is close to the load-bearing part pipe joint, thereby make the mortise lock break away from the restriction of load-bearing part mounting, the connecting piece unblock, after the connecting piece unblock, drive the synchronous circumferential direction of connecting piece through rotating load-bearing part pipe joint, realize folding up.

In the utility model, the pushing part is an arc-shaped pushing boss, the top surface of the pushing boss is an arc-shaped inclined plane with the height gradually increasing in the circumferential direction, the lowest position of the pushing boss is flush with the inner side surface depending on part of the pipe joint, and the highest position is the height of the boss; the compression part is an arc compression boss, and the compression boss and the pushing boss have the same structure. When the relying part and the bearing part are in an extension state, the highest position of the compression boss is adjacent to the lowest position of the pushing boss, the relying part pipe joint rotates after being unlocked, the compression boss is pushed by the pushing boss, a component force along the axial direction is generated, the connecting piece is pushed to axially displace towards the direction close to the bearing part pipe joint, and the axial displacement is more than or equal to the insertion depth of the mortise lock of the connecting piece into the bearing part fixing piece, so that the mortise lock is separated from the bearing part fixing piece.

In a preferred embodiment, the number of the pressing bosses is two, the number of the pressing bosses is also two, and when the connecting piece is attached to the joint of the depending part of the pipe, the two pressing bosses and the two pressing bosses are distributed in a staggered manner.

The two pushing bosses are arranged in a staggered mode in the radial direction, the two pressed bosses are also arranged in a staggered mode in the radial direction, and the pressed bosses are matched with the corresponding pushing bosses.

In the utility model, the mortise lock is in a cross shape with different lengths, and comprises two long locking teeth with longer length positioned on the same straight line and two short locking teeth with shorter length positioned on the same straight line; the bearing part fixing piece is provided with a cross-shaped lock hole matched with the mortise lock.

The outer edge surfaces of the two long locking teeth are arc surfaces, and the outer edge surfaces of the two short locking teeth are also arc surfaces; the circle where the two long locking teeth are located and the circle where the two short locking teeth are located are concentric circles, the radius of each long locking tooth is R1, and the radius of each short locking tooth is R2; the inner end face of the bearing part fixing piece is provided with a limiting column, the projection of the limiting column on the concentric circle is positioned between the circle where the short locking teeth are positioned and the circle where the long locking teeth are positioned, and the cross-sectional dimension of the limiting column is smaller than R1-R2.

When the bearing part pipe joint drives the connecting piece to rotate circumferentially, the bearing part pipe joint stops rotating when the long locking tooth rotates to the limit position which is contacted with the limit column.

As a preferred embodiment, the connecting piece is provided with an arc-shaped avoiding groove on the end surface of the mortise lock, the avoiding groove is positioned between the circle where the short lock tooth is positioned and the circle where the long lock tooth is positioned, and the avoiding groove is positioned corresponding to the limiting column. When the mortise lock of the connecting piece is inserted into the lock hole of the fixed piece of the bearing part, the limiting column is inserted into the avoiding groove, and the interference between the limiting column and the connecting piece is prevented.

The utility model discloses in, bear part pipe joint has the sliding guide post, the inboard of connecting piece seted up with the sliding guide groove of sliding guide post looks adaptation, the connecting piece passes through the sliding guide groove cartridge on the sliding guide post of bearing part pipe joint.

In a preferred embodiment, the number of the sliding guide columns is two, and the two sliding guide columns are arranged in a staggered manner in the radial direction; the number of the sliding guide grooves is two; the two sliding guide grooves are arranged in a staggered mode in the radial direction.

The utility model discloses in, bear partial pipe joint and have connection base, the elastic component is sliding spring, sliding spring's both ends are connected with connection base and connecting piece are fixed respectively, the connecting piece suit connection base.

In a preferred embodiment, the folding mechanism further comprises a hinge, the hinge is a rivet, the rivet is inserted into the bearing part pipe joint after passing through the bearing part fixing member and the connecting member, and the rivet is a hinge rotating shaft of the bearing part pipe joint.

The utility model discloses in, the connecting piece is wheel shape, the draw-in groove of locking portion for setting up on the connecting piece outer fringe face, the locking piece has the spring bolt and replies the spring, reply the top of spring and fix rely on in the part pipe joint, the bottom with the locking piece is fixed to be connected, the unblock unit includes steel cable and steel cable control assembly, and the both ends of steel cable are fixed with locking piece and steel cable control assembly respectively and are connected. When the depending part and the bearing part are in an extending state, the lock tongue is inserted into the clamping groove to be locked; when unlocking, the steel rope control assembly pulls the steel rope to enable the lock tongue of the locking piece to be separated from the clamping groove, and unlocking by means of partial pipe joints is achieved.

As a preferred embodiment, the plurality of slots are of the same structure, and are continuously arranged to form a slot area, and the top surface of each slot is lower than the outer edge surface of the connecting piece. When the end surface of the lock tongue is lower than the top surface of the clamping groove, the lock tongue is locked by partial pipe joints, and when the end surface of the lock tongue is positioned between the top surface of the clamping groove and the outer edge surface of the connecting piece, the lock tongue can only rotate in the range of the clamping groove by partial pipe joints; when the end surface of the lock tongue is higher than the outer edge surface of the connecting piece, the lock tongue can rotate outside the clamping groove area by means of part of the pipe joints.

The second purpose of the utility model is to provide a child carrier.

The utility model discloses a this purpose is realized through following technical scheme: the child carrier comprising the folding mechanism is characterized in that: the child carrier further comprises a frame body, wheels, a bearing part and a depending part, wherein the frame body is supported on the wheels, the bearing part is installed on the frame body, the depending part and the bearing part are provided with the folding mechanism, and folding is achieved through the folding mechanism.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1A is a view of a child carrier according to the present invention in an in-use position, wherein the depending portion and the carrying portion are in an extended position;

FIG. 1B is a side view of FIG. 1A;

FIG. 2A is a semi-collapsed view of the child carrier of the present invention;

FIG. 2B is a side view of FIG. 2A;

FIG. 3A is a fully folded state view of the child carrier of the present invention;

FIG. 3B is a side view of FIG. 3A;

FIG. 4 is an exploded view of the folding mechanism of the child carrier of the present invention;

FIG. 5 is an exploded view of the folding mechanism of the child carrier of the present invention from another angle;

FIG. 6 is a schematic view of a partial structure of the child carrier of the present invention, wherein the depending portion and the carrying portion are in an extended state;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a cross-sectional view taken along line B-B of FIG. 8;

FIG. 10 is a schematic view of a partial structure of the child carrier of the present invention, wherein the leaning portion and the carrying portion are folded;

FIG. 11 is a cross-sectional view taken along line C-C of FIG. 10;

FIG. 12 is a top view of FIG. 10;

FIG. 13 is a cross-sectional view taken along line D-D of FIG. 12;

fig. 14A is a schematic view of the movement of the pushing boss depending on part of the tube joint and the pressing boss of the connecting member in the child carrier of the present invention, at this time, the pushing boss does not push the pressing boss;

fig. 14B is a schematic view of the movement of the pushing boss depending on part of the tube joint and the pressing boss of the connecting member in the child carrier of the present invention, at this time, the pushing boss further rotates, but the pressing boss is not yet pushed;

fig. 14C is a schematic view of the movement of the pushing boss depending on part of the tube joint and the pressing boss of the connecting member in the child carrier of the present invention, at this time, the pushing boss further rotates to push and press the pressing boss;

fig. 14D is a schematic diagram of the movement of the pushing boss depending on part of the tube joint and the pressing boss of the connecting member in the child carrier of the present invention, at this time, the pushing boss further rotates, and the maximum displacement pushes and presses the pressing boss;

FIG. 15 is an assembly view of the attachment member and the mounting member of the load-carrying portion of the child carrier of the present invention, wherein the attachment member is in a locked position with the support portion and the load-carrying portion in an extended position;

FIG. 16 is a cross-sectional view E-E of FIG. 15;

FIG. 17 is an assembly view of the fastening member of the connecting member and the carrying portion of the child carrier of the present invention, wherein the depending portion and the carrying portion are folded and the connecting member is in the unlocking position;

FIG. 18 is a cross-sectional view F-F of FIG. 17;

FIG. 19 is an assembly view of the fastening member of the connecting member and the carrying portion of the child carrier of the present invention, wherein the depending portion and the carrying portion are completely folded, and the connecting member is in an unlocked position;

FIG. 20 is a sectional view taken along line G-G of FIG. 19;

FIG. 21 is an assembly view of the connection member and the depending portion of the tube joint of the child carrier of the present invention, with the depending portion and the carrying portion in an extended position and the connection member in a locked position;

FIG. 22 is a sectional view taken at H-H of FIG. 21;

FIG. 23 is an assembly view of the tube joint of the attachment member and the depending portion of the child carrier of the present invention, wherein the depending portion and the carrying portion are folded and the attachment member is in the unlocked position;

FIG. 24 is a cross-sectional view M-M of FIG. 23;

FIG. 25 is an assembly view of the connection member and the depending portion of the tube joint of the child carrier of the present invention, wherein the depending portion and the carrying portion are completely folded, and the connection member is in an unlocked position;

fig. 26 is a cross-sectional view taken along line N-N of fig. 25.

Detailed Description

As shown in fig. 1A to 26, the child carrier further includes a frame, wheels, a carrying portion 1 and a depending portion 2, the frame is supported on the wheels, the carrying portion 1 is mounted on the frame, the depending portion 2 and the carrying portion 1 have a folding mechanism, and folding of the depending portion 2 and the carrying portion 1 is achieved through the folding mechanism.

In this embodiment, the folding mechanism includes a bearing portion pipe joint 3, a relying portion pipe joint 9 and a bearing portion fixing member 10 which are sequentially clamped, the bearing portion fixing member 10 is installed on the frame, the bearing portion pipe joint 3 is located on the inner side of the bearing portion, the bearing portion fixing member 10 is located on the outer side of the bearing portion, and the relying portion pipe joint 9 is respectively connected with the bearing portion pipe joint 3 and the bearing portion fixing member 10 in a rotating manner.

The folding mechanism is also provided with a connecting piece 6 and a locking piece 7, the connecting piece 6 is arranged between the bearing part pipe joint 3 and the relying part pipe joint 9, the bearing part pipe joint 3, the connecting piece 6, the relying part pipe joint 9 and the bearing part fixing piece 10 are hinged through a hinge piece, the hinge piece is a rivet 11, the bearing part pipe joint 3 is inserted after the rivet 11 penetrates through the bearing part fixing piece 10 and the connecting piece 6, and the rivet 11 is a hinge rotating shaft of the bearing part pipe joint 3. The inner side of the connecting piece 6 is inserted on the bearing part pipe joint 3, the connecting piece 6 can only move axially relative to the bearing part pipe joint 3, an elastic piece is arranged between the connecting piece 6 and the bearing part pipe joint 3, and the outer side of the connecting piece 6 is provided with a mortise lock 61 which penetrates through the bearing part pipe joint 9 and then is inserted with the bearing part fixing piece 10; the outer side of the connecting piece 6 is provided with a pressure receiving part, and the partial pipe joint 9 is provided with a pushing part matched with the pressure receiving part; the locking member 7 is located in the relying part tube joint 9, the connecting member 6 has a locking portion, and the locking member 7 is connected to the unlocking unit.

When the rest section and the carrying section are in the extended state, the locking piece 7 is inserted into the locking part of the connecting piece 6, the connecting piece 6 is in the locking position, the mortise lock 61 of the connecting piece 6 is inserted into the carrying section fixing piece 10, and the carrying section pipe joint 3 and the rest section pipe joint 9 are both in the locking state. The locking piece 7 is inserted with the locking part of the connecting piece 6 and is locked relative to the bearing part pipe joint 3 by the part pipe joint 9; the latches 61 of the connecting elements 6 engage the carrier part fixing elements 10, and the carrier part pipe joint 3 is locked relative to the carrier part fixing elements 10, i.e. the entire carrier part arrangement (including the rest part, the carrier part and the other parts connected thereto) is locked relative to the vehicle frame.

When the whole frame is folded, firstly, when the depending part and the bearing part need to be folded, the locking piece 7 is pulled by the unlocking unit to be separated from the locking part of the connecting piece 6, the depending part pipe joint 9 is unlocked, the depending part pipe joint 9 after being unlocked can circumferentially rotate relative to the bearing part pipe joint 3 and the bearing part fixing piece 10, the pressed part of the connecting piece 6 is pushed and pressed by the pushing and pressing part in the rotating process of the depending part pipe joint 9, so that the connecting piece 6 axially moves towards the direction close to the bearing part pipe joint 3, so that the mortise lock 61 is released from the restriction of the carrier section fixing member 10, the link member 6 is unlocked, and after the link member 6 is unlocked, due to the action of gravity, the tube joint 3 of the bearing part and the connecting piece 6 are rotated to be interlocked, and the tube joint rotates synchronously and circumferentially relative to the fixing piece 10 of the bearing part, so that the dependence part and the bearing part are folded relative to the frame. Namely, the carrying part device (including the depending part, the carrying part and other related parts) is folded to the position where the whole frame needs to be folded, thereby ensuring that the whole frame can be folded

In this embodiment, the pushing portion is an arc-shaped pushing boss 91, the top surface of the pushing boss 91 is an arc-shaped inclined surface with a height gradually increasing in the circumferential direction, the lowest position of the pushing boss 91 is flush with the inner side surface of the relying part pipe joint 9, and the highest position is the boss height; the pressure receiving portion is an arc-shaped pressure receiving projection 62, and the pressure receiving projection 62 and the pressing projection 91 have the same structure.

When the leaning part and the bearing part are in an extending state, the highest position of the pressing boss 62 is adjacent to the lowest position of the pressing boss 91, the leaning part pipe joint 9 rotates after being unlocked, the pressing boss 62 is pressed by the pressing boss 91, a component force in the axial direction is generated, the connecting piece 6 is pushed to axially displace towards the direction close to the bearing part pipe joint 3, the axial displacement is larger than or equal to the insertion depth of the mortise lock 61 of the connecting piece 6 into the bearing part fixing piece 10, and the mortise lock 61 is separated from the bearing part fixing piece 10.

As a preferred embodiment, in order to make the stress balanced and prevent the stress from acting on the central articulated shaft, abrasion and friction of the central shaft, the number of the inclined plane bosses is more than or equal to two pairs and is in balanced distribution. In this embodiment, the number of the pressing bosses 91 is two, the number of the pressure-receiving bosses 62 is also two, and when the connecting member 6 is attached to the partial pipe joint 9, the two pressing bosses 91 and the two pressure-receiving bosses 62 are distributed in a staggered manner, wherein the two pressing bosses 91 are arranged in a staggered manner in the radial direction, the two pressure-receiving bosses 62 are also arranged in a staggered manner in the radial direction, and the pressure-receiving bosses 62 are adapted to the corresponding pressing bosses 91. Adjacent bosses on the same part form an angle of 180 degrees, and the directions of the inclined planes are consistent. The heights and the inclinations of the inclined surfaces of the matched bosses are the same, so that the matching surfaces can be in surface contact, the abrasion caused by line contact or point contact is avoided, and the whole structure is more stable, reliable and durable.

In this embodiment, the mortise lock 61 is a cross shape with different lengths, and includes two long locking teeth 611 with longer lengths located on the same straight line and two short locking teeth 612 with shorter lengths located on the same straight line; the carrier part holder 10 has a cross-shaped lock hole 101 adapted to the mortise lock 61.

The outer edge surfaces of the two long locking teeth 611 are arc surfaces, and the outer edge surfaces of the two short locking teeth 612 are also arc surfaces; the circle of the two long locking teeth 611 and the circle of the two short locking teeth 612 are concentric circles, the radius of the long locking teeth 611 is R1, and the radius of the short locking teeth 612 is R2; the inner end face of the bearing part fixing member 10 is provided with a limiting column 102, the projection of the limiting column 102 on a concentric circle is positioned between the circle where the short locking tooth 612 is positioned and the circle where the long locking tooth 611 is positioned, and the cross-sectional dimension of the limiting column 102 is smaller than R1-R2. When the bearing part pipe joint 3 drives the connecting piece 6 to rotate circumferentially, the bearing part pipe joint 3 stops rotating when the long locking tooth 611 rotates to the limit position contacted with the limit column 102.

In a preferred embodiment, the connecting member 6 is provided with an arc-shaped avoiding groove 64 on the end surface of the mortise lock 61, the avoiding groove 64 is located between the circle where the short locking tooth 612 is located and the circle where the long locking tooth 611 is located, that is, the cross-sectional dimension of the avoiding groove 64 is also smaller than R1-R2 and larger than the cross-sectional dimension of the position-limiting post 102, and the position of the avoiding groove 64 corresponds to the position-limiting post 102, so that the position-limiting post 102 can be accommodated. When the mortise lock 61 of the connecting member 6 is inserted into the lock hole 101 of the bearing part fixture 10, the position-limiting column 102 is inserted into the position-avoiding groove 64, preventing interference between the position-limiting column 102 and the connecting member 6.

Meanwhile, the rotation angle of the bearing part pipe joint 3 is limited through the matching of the avoiding groove 64 and the limiting column 102, and the reverse reset rotation angle of the bearing part pipe joint 3 is controlled, so that misoperation is avoided, and the bearing part is prevented from being rightly reset. The space avoiding groove 64 is provided, although the connecting piece 6 is not reset in the folding state, the bearing part pipe joint 3 can only rotate in the range between the folding state and the locking state, and the rotating angle of the connecting piece 6 is limited.

In this embodiment, the bearing portion pipe joint 3 has a sliding guide column 31, the inner side of the connecting member 6 is provided with a sliding guide groove 63 adapted to the sliding guide column 31, and the connecting member 6 is inserted into the sliding guide column 31 of the bearing portion pipe joint 3 through the sliding guide groove 63. The positions of the sliding guide column 31 and the sliding guide groove 63 can be interchanged, the sliding guide groove 63 can slide relative to the sliding guide column 31 along the central shaft direction, and besides the guiding function of the sliding guide column 31, an interaction force exists between the sliding guide column 31 and the sliding guide groove 63. When a child sits on the carrier, a downward force in the tangential direction is generated on the bearing part pipe joint 3, namely the interaction force between the bearing part pipe joint 3 and the connecting piece 6, and the force mainly acts on the sliding guide column 31, so that in the embodiment, the sliding guide column 31 is designed into a rib type, and can also be designed into other shape structures capable of bearing large interaction force. Considering the balanced stress factor, the number of the sliding guide grooves 63 is the same as that of the sliding guide columns 31, the number of the sliding guide grooves is two, the angles between the two are 180 degrees, the sliding guide grooves are evenly distributed, the sliding guide grooves can also be designed to be three, and the angles between the two are 120 degrees respectively.

As a preferred embodiment, there are two sliding guide posts 31, and the two sliding guide posts 31 are arranged in a staggered manner in the radial direction; the number of the sliding guide grooves 63 is also two; two sliding guide grooves 63 are arranged in a staggered mode in the radial direction, and guide columns and guide grooves are arranged in a staggered mode in the radial direction and arranged on different circumferences to achieve the effect of avoiding positions.

In this embodiment, the bearing part pipe joint 3 has a connection base 32, the elastic member is a sliding spring 4, two ends of the sliding spring 4 are respectively fixedly connected with the connection base 32 and the connection member 6, and the connection base 32 is sleeved with the connection member 6.

In this embodiment, connecting piece 6 is the wheel shape, and locking part is the draw-in groove 65 that sets up on the connecting piece 6 outer fringe face, and locking piece 7 has spring bolt 71 and answer spring 8, and answer spring 8's top is fixed in relying on partial tube joint 9, and the bottom is connected with locking piece 7 is fixed, and the unblock unit includes steel cable 5 and steel cable control assembly, and the both ends of steel cable 5 are connected with locking piece 7 and steel cable control assembly are fixed respectively.

When the leaning part and the bearing part are in an extending state, the bolt 71 is inserted into the slot 65 to be locked; when unlocking, the steel rope 5 is pulled through the steel rope control assembly, so that the bolt 71 of the locking piece 7 is disengaged from the clamping groove 65, and the unlocking of the partial pipe joint 9 is realized.

As a preferred embodiment, the plurality of slots 65 have the same structure, the plurality of slots 65 are continuously arranged to form a slot area, and the top surface of each slot 65 is lower than the outer edge surface of the connecting member 6; when the end surface of the locking tongue 71 is lower than the top surface of the clamping groove 65, the locking is realized by virtue of a part of pipe joint 9, and when the end surface of the locking tongue 71 is arranged between the top surface of the clamping groove 65 and the outer edge surface of the connecting piece 6, the locking can only rotate in the range of the clamping groove area by virtue of a part of pipe joint 9; when the end face of the locking tongue 71 is higher than the outer edge face of the connecting piece 6, the tube joint 9 can be rotated by means of the partial tube joint outside the region of the locking groove.

In the folding mechanism of this embodiment, the support member fixing member 10, the partial tube joint 9, the connecting member 6, and the support member tube joint 3 are connected by a central shaft. The sliding guide column 31 and the sliding guide groove 63 are arranged between the connecting piece 6 and the bearing part pipe joint 3, and the rotation does not exist, and only the axial sliding motion exists. The side surface of the partial pipe joint 9 is clamped with the bearing part pipe joint 3, the partial pipe joint 9 and the bearing part pipe joint 3 do not slide axially, only rotate relatively, and the rotation is unlocked and locked by adjusting the position of the locking piece 7. The other side surface of the partial pipe joint 9 is clamped with the bearing part fixing piece 10, and only relative rotation exists between the two and axial sliding motion does not exist. There is no axial sliding between the connecting piece 6 and the depending section tube joint 9, there is only relative rotation, and the rotation is unlocked by the axial sliding movement of the mortise lock 61 relative to the lock hole 101.

The folding process of the folding mechanism of this embodiment is as follows:

as shown in fig. 1A and 1B, the relying part and the bearing part are in an extended state, the locking tongue 71 of the locking piece 7 is inserted into the locking groove 65 of the connecting piece 6, the connecting piece 6 is in a locking position, the mortise lock 61 of the connecting piece 6 is inserted into the locking hole 101 of the bearing part fixing piece 10, and the connecting piece 6, the relying part pipe joint 9 and the bearing part pipe joint 3 are all in a locking state and cannot rotate circumferentially.

When the dependence part and the bearing part need to be folded, the locking tongue 71 of the locking piece 7 is pulled to be separated from the clamping groove 65 of the connecting piece 6 through the unlocking unit, the dependence part pipe joint 9 is unlocked, the dependence part pipe joint 9 can rotate in the circumferential direction relative to the bearing part pipe joint 3 and the bearing part fixing piece 10 under the action of external force after unlocking, the dependence part pipe joint 9 rotates to push and press the arc-shaped pressed boss 62 of the connecting piece 6 through the arc-shaped push and press boss 91, so that the connecting piece 6 moves axially towards the direction close to the bearing part pipe joint 3, the mortise lock 61 is separated from the limit of the lock hole 101 of the bearing part fixing piece 10, and the connecting piece 6 is unlocked.

After the connecting piece 6 is unlocked, the sliding guide groove 63 of the connecting piece 6 is inserted into the sliding guide column 31 of the bearing part pipe joint 3, so that the bearing part pipe joint 3 is rotated to drive the connecting piece 6 to synchronously rotate circumferentially, and folding is realized. The half-folded state is shown in fig. 2A and 2B, and the completely-folded state is shown in fig. 3A and 3B. In the fully folded state, the whole carrying part device (including the leaning part, the carrying part and other related parts) will rotate relative to the carrying part fixing member 10, and the carrying part fixing member 10 is installed on the frame, so that the whole carrying part device will rotate a certain angle relative to the frame to reach a certain position and then stop.

Claims (14)

1. The utility model provides a folding mechanism, includes bearing part pipe joint (3), relies on partial pipe joint (9) and bearing part mounting (10) that clamp in proper order, relies on partial pipe joint (9) to rotate with bearing part pipe joint (3) and bearing part mounting (10) respectively and is connected, folding mechanism still has connecting piece (6) and locking piece (7), its characterized in that: the connecting piece (6) is arranged between the bearing part pipe joint (3) and the relying part pipe joint (9), the inner side of the connecting piece (6) is inserted on the bearing part pipe joint (3), an elastic piece is arranged between the connecting piece (6) and the bearing part pipe joint (3), and the outer side of the connecting piece (6) is provided with a mortise lock (61) which penetrates through the relying part pipe joint (9) and then is inserted with the bearing part fixing piece (10); the outer side of the connecting piece (6) is provided with a pressure receiving part, and the depending part pipe joint (9) is provided with a pushing part matched with the pressure receiving part; the locking piece (7) is located in the dependence part pipe joint (9), the connecting piece (6) is provided with a locking part, and the locking piece (7) is connected with the unlocking unit.

2. The folding mechanism of claim 1, wherein: the pushing part is an arc-shaped pushing boss (91), the top surface of the pushing boss (91) is an arc-shaped inclined surface with the height gradually increasing in the circumferential direction, the lowest position of the pushing boss (91) is flush with the inner side surface of the dependence part pipe joint (9), and the highest position is the boss height; the compression part is an arc compression boss (62), and the compression boss (62) and the pushing boss (91) have the same structure.

3. The folding mechanism of claim 2, wherein: bulldoze boss (91) be two, pressurized boss (62) also be two, when connecting piece (6) laminating relies on partial pipe joint (9), two bulldoze boss (91) and two pressurized bosses (62) and are the crisscross distribution.

4. The folding mechanism of claim 3, wherein: the two pressing bosses (91) are arranged in a staggered mode in the radial direction, the two pressed bosses (62) are also arranged in a staggered mode in the radial direction, and the pressed bosses (62) are matched with the corresponding pressing bosses (91).

5. The folding mechanism of any one of claims 1 to 4, wherein: the mortise lock (61) is in a cross shape with different lengths and comprises two long locking teeth (611) with longer lengths on the same straight line and two short locking teeth (612) with shorter lengths on the same straight line; the carrier part holder (10) has a cross-shaped locking hole (101) adapted to the latch (61).

6. The folding mechanism of claim 5, wherein: the outer edge surfaces of the two long locking teeth (611) are arc surfaces, and the outer edge surfaces of the two short locking teeth (612) are also arc surfaces; the circle where the two long locking teeth (611) are located and the circle where the two short locking teeth (612) are located are concentric circles, the radius of each long locking tooth (611) is R1, and the radius of each short locking tooth (612) is R2; the inner end face of the bearing part fixing piece (10) is provided with a limiting column (102), the projection of the limiting column (102) on the concentric circle is positioned between the circle where the short locking tooth (612) is positioned and the circle where the long locking tooth (611) is positioned, and the cross-sectional dimension of the limiting column (102) is smaller than R1-R2.

7. The folding mechanism of claim 6, wherein: the connecting piece (6) is provided with an arc-shaped avoiding groove (64) on the end face of the mortise lock (61), the avoiding groove (64) is positioned between a circle where the short lock tooth (612) is positioned and a circle where the long lock tooth (611) is positioned, and the position of the avoiding groove (64) corresponds to the limiting column (102).

8. The folding mechanism of any one of claims 1 to 4, wherein: the bearing part pipe joint (3) is provided with a sliding guide column (31), the inner side of the connecting piece (6) is provided with a sliding guide groove (63) matched with the sliding guide column (31), and the connecting piece (6) is inserted on the sliding guide column (31) of the bearing part pipe joint (3) through the sliding guide groove (63).

9. The folding mechanism of claim 8, wherein: the number of the sliding guide columns (31) is two, and the two sliding guide columns (31) are arranged in a staggered mode in the radial direction; the number of the sliding guide grooves (63) is two; the two sliding guide grooves (63) are arranged in a staggered manner in the radial direction.

10. The folding mechanism of claim 9, wherein: the bearing part pipe joint (3) is provided with a connecting base (32), the elastic piece is a sliding spring (4), two ends of the sliding spring (4) are fixedly connected with the connecting base (32) and a connecting piece (6) respectively, and the connecting base (32) is sleeved with the connecting piece (6).

11. The folding mechanism of any one of claims 1 to 4, wherein: the folding mechanism is also provided with a hinged piece which is a rivet (11), and the bearing part pipe joint (3) is inserted after the rivet (11) passes through the bearing part fixing piece (10) and the connecting piece (6).

12. The folding mechanism of any one of claims 1 to 4, wherein: connecting piece (6) are wheel shape, draw-in groove (65) of locking part for setting up on connecting piece (6) outer fringe face, locking piece (7) have spring bolt (71) and answer spring (8), the top of answer spring (8) is fixed in relying on partial pipe joint (9), the bottom with locking piece (7) are fixed and are connected, the unblock unit includes steel cable (5) and steel cable control module, and the both ends of steel cable (5) are fixed with locking piece (7) and steel cable control module respectively and are connected.

13. The folding mechanism of claim 12, wherein: the clamping grooves (65) are multiple and identical in structure, the clamping grooves (65) are continuously arranged to form a clamping groove area, and the top surfaces of the clamping grooves (65) are lower than the outer edge surface of the connecting piece (6).

14. A child carrier comprising the folding mechanism of any of claims 1 to 13, wherein: the child carrier further comprises a frame body, wheels, a bearing part and a depending part, wherein the frame body is supported on the wheels, the bearing part is installed on the frame body, the depending part and the bearing part are provided with the folding mechanism, and folding is achieved through the folding mechanism.

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