CN113479253A

CN113479253A - Unfolding and folding method of baby carrying device

Info

Publication number: CN113479253A
Application number: CN202110792392.XA
Authority: CN
Inventors: 吴海涛
Original assignee: China Wonderland Nurserygoods Co Ltd
Current assignee: China Wonderland Nurserygoods Co Ltd
Priority date: 2017-10-18
Filing date: 2017-10-18
Publication date: 2021-10-08
Anticipated expiration: 2037-10-18
Also published as: CN109677481B; CN109677481A; CN113479253B

Abstract

The invention provides an unfolding and folding method of an infant bearing device, which comprises the following steps: providing a handrail, a backrest, a crus rest and a locking mechanism, pivotally connecting the handrail and the backrest, pivotally connecting the crus rest to the backrest, and arranging the locking mechanism between the handrail and the crus rest; the shank rest is driven to rotate and unfold relative to the backrest, so that the shank rest drives the locking mechanism to lock the rotation of the armrest relative to the backrest, and the armrest is fixed in an unfolded state; or the lower leg rest is driven to rotate relative to the backrest for folding, so that the lower leg rest drives the locking mechanism to unlock the rotation of the armrest relative to the backrest, and the armrest is synchronously folded along with the lower leg rest. In the unfolding and folding method of the baby carrying device, the armrests can be folded along with the crus synchronously, and the armrests and the crus can be folded by one operation, so that the baby carrying device is simple and convenient to operate, has smaller volume after being folded, is convenient to carry and transport, and has stronger practicability.

Description

Unfolding and folding method of baby carrying device

The invention relates to a divisional application of a baby carrying device and a locking mechanism for linkage of a calf rest and an armrest of the baby carrying device, wherein the application number is 201710978445.0, and the application date is 2017, 10 and 18.

Technical Field

The invention relates to the technical field of infant bearing devices, in particular to an unfolding and folding method of an infant bearing device.

Background

In the design of the frame structure of the conventional infant carrier, in order to meet the requirements of the practicability and portability of consumers, the frame of the infant carrier is generally designed to be foldable so that the frame can be unfolded to be in the shape of the infant carrier when in use and can be folded to be smaller in size when not in use so as to be convenient to store or carry. The most common technical means for realizing the folding of the frame of the baby carrying device is to add a lock releasing mechanism (i.e. a folding mechanism) on the basis of the improvement of the structure of the baby carrying device, and lock or release the lock of the frame of the baby carrying device by using the lock releasing mechanism, thereby achieving the purpose of unfolding or folding the baby carrying device.

However, in the prior art, when most of the baby carriers are folded, the armrests of the frame cannot be folded, or the armrests need to be detached from the frame before being folded, which is very complicated to fold.

Therefore, there is a need for an unfolding and folding method of a baby supporting device that is easy and convenient to operate and allows the armrests to be folded synchronously with the crus.

Disclosure of Invention

The invention aims to provide a method for unfolding and folding an infant bearing device, which is simple and convenient to operate and can synchronously fold and unfold armrests along with crus.

To achieve the above object, the present invention provides a method for unfolding and folding a baby supporting device, comprising: the shank rest is driven to rotate and unfold relative to the backrest, so that the shank rest drives the locking mechanism to lock the rotation of the armrest relative to the backrest, and the armrest is fixed in an unfolded state; or the shank rest is driven to rotate and fold relative to the backrest, so that the shank rest drives the locking mechanism to unlock the rotation of the armrest relative to the backrest, and the armrest synchronously folds along with the shank rest; wherein, the armrest is pivoted with the backrest, the crus backrest is pivoted with the backrest, and the locking mechanism is arranged between the armrest and the crus backrest.

Preferably, the armrest is connected with an armrest fixing piece, the backrest is connected with a backrest fixing piece, the lower leg backrest is connected with a lower leg backrest fixing piece, the armrest fixing piece is pivoted with the backrest fixing piece, and the lower leg backrest fixing piece is pivoted with the backrest fixing piece.

Preferably, the locking mechanism comprises a positioning pin, one end of the positioning pin is elastically and eccentrically connected with the shank fixing piece in an abutting mode, the other end of the positioning pin is opposite to the handrail fixing piece, and the positioning pin is inserted into the handrail fixing piece to be locked or withdrawn from the handrail fixing piece to be unlocked through the change of the distance between the abutting position of the positioning pin and the shank fixing piece and the rotation center of the shank fixing piece relative to the rotation center of the shank fixing piece.

Preferably, the contact part between the positioning pin and the lower leg rest fixing piece is designed into an arc structure.

Preferably, the positioning pin is connected with a positioning block, so that the positioning pin is abutted against the shank leaning fixing piece through the positioning block.

Preferably, the positioning block is provided with a third sliding groove, and the positioning pin is slidably clamped in the third sliding groove, so that the positioning block and the positioning pin are slidably arranged.

Preferably, the lower leg rest fixing piece is arranged in an eccentric structure, and the positioning pin is abutted with different positions of the lower leg rest fixing piece through the positioning pin, so that the positioning pin is inserted into the handrail fixing piece to be locked or is withdrawn from the handrail fixing piece to be unlocked.

Preferably, the crus rest fixing piece comprises a body, the body is provided with a blocking rib protruding outwards, and the blocking rib and the body form an eccentric structure; when the positioning pin abuts against the barrier rib, the positioning pin is inserted into the handrail fixing piece to be locked; when the positioning pin is abutted against the body, the positioning pin is withdrawn from the handrail fixing piece for unlocking.

Preferably, the backrest fixing member is provided with a first sliding groove for the positioning pin to slide, so that the positioning pin performs locking or unlocking action under the guiding action of the first sliding groove.

Preferably, a first elastic component is compressively arranged between the positioning pin and the backrest fixing part, and the positioning pin is biased in the unlocking direction through the first elastic component, so that the positioning pin is always elastically connected with the shank backrest fixing part in an abutting mode through the first elastic component.

Compared with the prior art, the rotation of the crus backrest of the invention drives the locking mechanism to lock or unlock the rotation of the armrest relative to the backrest; when the unfolded baby carrying device is folded, the calf backrest rotates relative to the backrest by means of folding of the calf backrest, the locking mechanism releases the locking of the armrest by the rotation of the calf backrest, namely the locking mechanism releases the rotation of the armrest relative to the backrest, so that the armrest automatically rotates relative to the backrest under the action of gravity, and the armrest synchronously folds along with the calf backrest; when the folded baby carrying device is unfolded, the leg rest rotates relative to the backrest by means of unfolding of the leg rest, and when the leg rest rotates to an unfolded state, the locking mechanism locks the rotation of the armrest, namely the locking mechanism locks the rotation of the armrest relative to the backrest, so that the armrest is fixed in the unfolded state, and a baby on a seat of the baby carrying device is protected; therefore, in the unfolding and folding method of the baby carrying device, the armrests can be folded along with the crus synchronously, and the armrests and the crus can be folded by one-time operation, so that the baby carrying device is simple and convenient to operate, has smaller volume after being folded, is convenient to carry and transport, and has stronger practicability.

Drawings

Fig. 1 is a schematic view of the deployed configuration of the infant carrier of the present invention.

FIG. 2 is a schematic structural view of the lower leg rest and the armrest locked by the release mechanism linked with the armrest according to the present invention.

Fig. 3 is another angle structure diagram of fig. 2.

Fig. 4 is another angle structure diagram of fig. 3.

Fig. 5 is a schematic view of the structure of fig. 3 with the decorative cover removed.

Fig. 5a is an enlarged schematic view of a portion a in fig. 5.

Fig. 6 is a side view schematic of the structure of fig. 5.

Fig. 7 is a structural view illustrating a state in which the locking mechanism of fig. 5 is locked by being inserted into the handrail fixing member.

Fig. 7a is an enlarged schematic view of a portion B of fig. 7.

FIG. 8 is a schematic structural view of the lower leg rest and the armrest being unlocked by the release mechanism linked with the armrest according to the present invention.

Fig. 8a is an enlarged schematic view of a portion C in fig. 8.

Fig. 9 is a schematic view of the fully collapsed structure of the calf rest, the armrests and the backrest of fig. 8.

Fig. 10 is a structural view illustrating a state in which the locking mechanism of fig. 8 is released from the armrest fastener.

Fig. 10a is an enlarged schematic view of a portion D in fig. 10.

Detailed Description

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

Referring to fig. 1-10 a, the infant supporting apparatus 100 of the present invention includes an armrest 101, a backrest 102, a calf rest 103, a seat 104, and a calf rest and armrest linkage release mechanism 10, wherein the calf rest and armrest linkage release mechanism includes an armrest fixing member 11, a backrest fixing member 12, a calf rest fixing member 13, and a locking mechanism 14, the armrest fixing member 11 is connected to the armrest 101, the backrest fixing member 12 is connected to the backrest 102, the armrest fixing member 11 is pivotally connected to the backrest fixing member 12, the calf rest fixing member 13 is connected to the calf rest 103, the calf rest fixing member 13 is pivotally connected to the backrest fixing member 12, the locking mechanism 14 is disposed between the armrest fixing member 11 and the calf rest fixing member 13, such that the armrest fixing member 11 and the calf rest fixing member 13 are linked by the locking mechanism 14, and when the calf rest fixing member 13 rotates in the unfolding direction (arrow G direction in fig. 8), the calf rest fixing piece 13 drives the locking mechanism 14 to lock the armrest fixing piece 11 to rotate relative to the backrest fixing piece 12, so that the armrest fixing piece 11 and the armrest 101 connected thereto are fixed in the unfolded state (the state shown in fig. 1-7) to protect the infant on the seat 104; when the shank backrest fixing member 13 rotates in the folding direction (the arrow F direction in fig. 1, the folding direction is opposite to the unfolding direction), the shank backrest fixing member 13 drives the locking mechanism 14 to unlock the rotation of the armrest fixing member 11 relative to the backrest fixing member 12, so that the armrest fixing member 11 can rotate relative to the backrest fixing member 12, and the armrest 101 and the shank backrest 103 can be folded for carrying and transportation; the specific locking and unlocking is described as follows:

it should be noted that the baby carriage of the present invention may be a baby carriage, a high chair or other baby carriage having the above features.

When the armrest 101 and the lower leg rest 103 of the unfolded infant carrier 100 shown in fig. 1-7 are folded, a force is applied in the direction of arrow F in fig. 1 to make the lower leg rest 103 approach the armrest 101, the lower leg rest fixing member 13 rotates relative to the backrest fixing member 12 due to the folding of the lower leg rest 103, the rotation of the lower leg rest fixing member 13 will make the locking mechanism 14 release the locking of the armrest fixing member 11, i.e. the locking mechanism 14 releases the rotation of the armrest fixing member 11 relative to the backrest fixing member 12, so that the armrest fixing member 11 and the armrest 101 connected thereto will automatically rotate relative to the backrest fixing member 12 under the action of gravity, and the armrest 101 is synchronously folded along with the lower leg rest 103 (the state diagram after the armrest is synchronously folded along with the lower leg rest, see fig. 9-10 a for details), the present invention can make both the armrest 101 and the lower leg rest 103 synchronously folded in one operation, the folding baby carrying device 100 is simple and convenient to operate, has a smaller volume, is convenient to carry and transport, and has stronger practicability.

When the armrest 101 and the lower leg rest 103 folded as shown in fig. 8-10 are unfolded, a force is applied in the direction of the arrow G in fig. 9 to unfold the lower leg rest 103, the lower leg rest fixing member 13 rotates relative to the back rest fixing member 12 due to the unfolding of the lower leg rest 103, and when the lower leg rest fixing member 13 rotates to the unfolded state (as shown in fig. 1-7), the locking mechanism 14 locks the rotation of the armrest fixing member 11, that is, the locking mechanism 14 locks the rotation of the armrest fixing member 11 relative to the back rest fixing member 12, so that the armrest fixing member 11 and the armrest 101 connected thereto are fixed to the unfolded state, thereby protecting the infant on the seat 104 of the infant supporting device 100.

As shown in fig. 2-5, the infant carrier 100 of the present invention preferably further includes a resilient member 106, the resilient member 106 is disposed across the seat 104; the shock absorption of the seat 104 can be effectively enhanced by the elastic member 106, and specifically, the elastic member 106 is an elastic rope-like object, such as a steel rope, a woven belt, etc.

As shown in fig. 2-5, preferably, the elastic member 106 of the present invention is of a bent structure, and the supporting area of the elastic member 106 in the seat 104 is effectively increased by the bent structure of the elastic member 106, so as to further improve the shock absorption and the support of the seat 104.

The calf rest and armrest interlock release mechanism 10 of the present invention will be described in further detail with continued reference to fig. 1-10 a:

as shown in fig. 1-10 a, specifically, the calf rest and armrest linkage lock release mechanism 10 of the present invention comprises an armrest fixing member 11, a backrest fixing member 12, a calf rest fixing member 13 and a lock mechanism 14, wherein the backrest fixing member 12 is used for connecting a backrest 102 of the infant carrier 100; the armrest fixing piece 11 is used for connecting an armrest 101 of the infant carrier 100, and the armrest fixing piece 11 is rotatably arranged on the backrest fixing piece 12; the calf rest fixing piece 13 is used for connecting a calf rest 103 of the infant bearing device 100, and the calf rest fixing piece 13 is rotatably arranged on the backrest fixing piece 12; the locking mechanism 14 is connected between the armrest fixing piece 11 and the lower leg rest fixing piece 13, and the rotation of the lower leg rest fixing piece 13 drives the locking mechanism 14 to lock or unlock the rotation of the armrest fixing piece relative to the back rest fixing piece 12, that is, when the infant carrier device is in the unfolded state as shown in fig. 1-7, the rotation of the armrest fixing piece 11 relative to the back rest fixing piece 12 is locked by the locking mechanism 14, so that the armrest fixing piece 11 cannot rotate relative to the back rest fixing piece 12 and is fixed in the unfolded state, so that the armrest 101 connected thereto can only be fixed in the unfolded state, thereby providing a stable protection function for the infant; when the baby carriage is in the folded state shown in fig. 8-10, the rotation of the armrest fixing member 11 locked by the locking mechanism 14 relative to the backrest fixing member 12 is unlocked, so that the armrest fixing member 11 can rotate relative to the backrest fixing member 12 to be folded, and the armrest 101 and the calf rest 103 can be folded for carrying and transporting.

As shown in fig. 5-10 a, in order to further improve the practicability and the structural simplicity of the present invention, the locking mechanism 14 of the present invention is connected to the handrail fixing member 11 in a plug-in manner, the rotation of the shank fixing member 13 in the unfolding direction drives the locking mechanism 14 to be inserted into the handrail fixing member 11 for locking, and the rotation of the shank fixing member 13 in the folding direction drives the locking mechanism 14 to be inserted into the handrail fixing member 11 for locking or to be withdrawn from the handrail fixing member 11 for releasing the lock, so that the rotation of the shank fixing member 13 drives the locking mechanism 14 to be inserted into the handrail fixing member 11 for locking or to be released from the handrail fixing member 11, and the present invention has a simple and practical structure and is easy to operate.

As shown in fig. 5a, fig. 7a, fig. 8a and fig. 10a, the locking mechanism 14 of the present invention is elastically connected to the lower leg support 13 in an abutting manner, so that when the armrest fastener 11 is locked by the locking mechanism 14, the locking mechanism 14 can be locked more stably by the elastic abutting connection between the locking mechanism 14 and the lower leg fastener 13; specifically, the locking mechanism 14 of the present invention is elastically and eccentrically connected to the lower leg fixing member 13 in an abutting manner, and by utilizing the characteristics of the eccentric structure, the locking mechanism 14 is inserted into the armrest fixing member 11 to be locked or withdrawn from the armrest fixing member 11 to be unlocked by the variation of the distance between the abutting position of the locking mechanism 14 and the lower leg fixing member 13 relative to the rotation center P of the lower leg fixing member 13; more specifically, referring to fig. 5a and 8a, fig. 5a shows a locked state in which the locking mechanism 14 is inserted into the armrest fastener 11, and in which the position where the locking mechanism 14 interferes with the lower leg rest fastener 13 is located in region D; fig. 8a shows the unlocked state in which the locking mechanism 14 is withdrawn from the armrest fixing member 11, in which the position of interference of the locking mechanism 14 with the calf rest fixing member 13 is located in the region E; as is clear from fig. 5a and 8a, the distance from the rotation center P to the D region and the distance from the rotation center P to the E region are different, that is, the distance from the collision position between the locking mechanism 14 and the lower leg rest fixing member 13 from the locking state of the D region to the unlocking state of the E region or from the unlocking state of the E region to the locking state of the D region is changed, and the distance from the collision position between the locking mechanism 14 and the lower leg rest fixing member 13 to the rotation center P of the lower leg rest fixing member 13 is changed, and due to the change of the distance, an eccentric structure is formed, so that the locking mechanism 14 realizes the locking and unlocking of the armrest fixing member 11, and the structure is simple and practical.

As shown in fig. 5 to 10a, the locking mechanism 14 of the present invention includes a positioning pin 141, one end of the positioning pin 141 is elastically and eccentrically connected to the lower leg fixing member 13 in an abutting manner, and the other end of the positioning pin 141 is opposite to the armrest fixing member 11, so that the positioning pin 141 is inserted into the armrest fixing member 11 to lock or release the lock from the armrest fixing member 11 by changing the distance between the abutting position of the positioning pin 141 and the lower leg fixing member 13 and the rotation center P of the lower leg fixing member 12, specifically, the armrest fixing member 11 is provided with a locking hole 111 into which the positioning pin 141 is inserted, and the insertion locking and release of the armrest fixing member 11 are realized by the positioning pin 141, which is simple and reliable in structure and fast and convenient in operation; it should be noted that the positioning pin 141 of the present invention may also be connected to other components (such as a positioning block 143 mentioned later), and the positioning pin 141 is inserted into the armrest fixing member 11 to lock or withdraw from the armrest fixing member 11 to unlock by directly abutting against the lower leg rest fixing member 13 through the other components; more specifically, when the present invention directly abuts against the lower leg support fixing member 13 through the positioning pin 141, the abutting portion of the positioning pin 141 and the lower leg support fixing member 13 is in an arc structure, and the operation is smoother when switching between the locking state (i.e. the unfolding state) and the unlocking state (i.e. the folding state) by the mutually matched arc structures; when the positioning pin 141 of the present invention directly contacts the lower leg support fixture 13 through other connecting members, the contact portion of the other connecting members and the lower leg support fixture 13 has an arc-shaped structure.

Referring to fig. 5a, 7a, 8a and 10a, the lower leg rest fixing member 13 of the present invention comprises a body 131, wherein the body 131 has an arc-shaped blocking rib 132 protruding outwards, and the blocking rib 132 and the body 131 form an eccentric structure; when the interference position of the positioning pin 141 of the locking mechanism 14 with the handrail fixing member 11 is located on the barrier rib 132, that is, the interference position of the positioning pin 141 with the handrail fixing member 11 is located on the region D shown in fig. 5a and 10a, the positioning pin 141 is inserted into the locking hole 111 of the handrail fixing member 11 and locked; when the position of the positioning pin 141 of the locking mechanism 14 abutting against the handrail fixing member 11 is located on the body 131, that is, the position of the positioning pin 141 abutting against the handrail fixing member 11 is located on the region E shown in fig. 7a and 8a, the positioning pin 141 is released from the locking hole 111 of the handrail fixing member 11.

As shown in fig. 8 and 10a, when the positioning pin 141 and the lower leg rest fixing member 13 of the eccentric structure collide with each other at different positions, the positioning pin 141 is inserted into or withdrawn from the locking hole 111 to lock or unlock the armrest fixing member 11, so that the positioning pin 141 of the present invention has a displacement capability, and in order to make the displacement capability of the positioning pin 141 to be inserted into or withdrawn from the locking hole 111 smoother and more accurate, the backrest fixing member 12 of the present invention is provided with a first slide groove 121 for the sliding movement of the positioning pin 141, and the positioning pin 141 can perform a locking or unlocking operation more accurately under the guiding action of the first slide groove 121.

As shown in fig. 5a, fig. 7a, fig. 8a and fig. 10a, the locking mechanism 14 of the present invention further includes a first elastic component 142, the first elastic component 142 is disposed between the positioning pin 141 and the backrest fixing member 12 in a compressed state, and the positioning pin 141 is biased in the unlocking direction by the first elastic component 141, so that the positioning pin 141 is in a compressed state no matter in the unlocking state or the locking state, and therefore the positioning pin 141 is always elastically connected with the lower leg rest fixing member 12 in an abutting manner by the first elastic component 142, and the change of the abutting position of the two realizes the locking and unlocking functions of the armrest fixing member 11.

As shown in fig. 5a, 7a, 8a and 10a, the locking mechanism 14 of the present invention further includes a positioning block 143, and the positioning pin 141 is protrudingly connected to one side of the positioning block 143; specifically, the positioning block 143 is slidably disposed with the positioning pin 141, a third sliding groove 141a is disposed on the positioning block, and the positioning pin 141 is slidably engaged with the third sliding groove 141a, so that the positioning block 143 is easily and conveniently slidably disposed with the positioning pin 141, and the first elastic component 142 of the present invention is sleeved on the positioning pin 141 and disposed between the armrest fixing member 11 and the positioning block 143 in a compressed manner, and is elastically abutted against and connected to the lower leg rest fixing member 13 by the compressed first elastic component 142; the positioning block 143 protruding the positioning pin 141 realizes direct elastic contact with the lower leg rest fixing element 13, and compared with the method of directly utilizing the positioning pin 141 to contact with the lower leg rest fixing element 13, the method increases the contact area with the lower leg rest fixing element 13, therefore, the positioning block 143 directly realizes elastic contact connection with the lower leg rest fixing element 13, and due to the increase of the contact area, the stability and reliability of locking and unlocking of the locking mechanism 14 of the invention are further improved.

As shown in fig. 5a, fig. 7a, fig. 8a and fig. 10a, more specifically, the first elastic component 142 of the present invention is sleeved on the positioning pin 141 and disposed between the armrest fixing member 11 and the positioning block 143 in a compressed manner, the second elastic component 144 is accommodated in the third sliding groove 141a, the second elastic component 144 is disposed away from the first elastic component 142 and is located between the positioning block 143 and the groove wall of the third sliding groove 141a, by virtue of the sliding arrangement of the first elastic component 142, the second elastic component 144 and the positioning pin 141 and the positioning block 143, when the seat is folded to the unfolded state, the lower leg is unfolded manually, when the armrest is not unfolded, the positioning pin 141 slides along the third sliding groove 141a of the positioning block 143, so that the two are drawn together (i.e. the length of the positioning pin located in the third sliding groove is longest), the positioning pin 141 and the positioning block 143 are drawn together to compress the second elastic component 144 located in the third sliding groove 141a, after the armrest is unfolded, the compressed second elastic component 144 pushes the positioning pin 141 to slide in the third sliding slot 141a, so that the positioning pin 141 continuously extends out from the positioning block 143 (i.e. the length of the positioning pin in the third sliding slot gradually decreases), and the positioning pin 141 continuously extending out from the positioning block 143 is gradually inserted into the locking hole 111 for locking; specifically, the first elastic element 142 and the second elastic element 144 are both coil springs.

Preferably, the abutting position of the positioning block 143 and the lower leg rest fixing element 13 is an arc structure.

As shown in fig. 8 and 10a, the positioning block 143 of the present invention further has a limiting portion 145 protruding outward, and when the positioning pin 141 is inserted into the handrail fixing element 11 for locking, the limiting portion 145 abuts against the groove wall 123 of the second sliding groove 122; by the collision of the limiting part 145 and the groove wall 123, the locking stroke of the positioning pin 141 inserted into the locking hole 111 is effectively limited, and when the handrail fixing piece 11 is locked, the positioning pin 141 directly impacts the handrail fixing piece 11, so that the handrail fixing piece 11 is not impacted and damaged by the positioning pin 141, and the quality and the service life of a product are ensured.

Preferably, the positioning block 143 of the present invention has a 7-shaped structure.

As shown in fig. 1-10 a, the rotation of the lower leg rest fixing piece 13 of the present invention will cause the locking mechanism 14 to lock or unlock the rotation of the armrest fixing piece 11 relative to the backrest fixing piece 12; when the unfolded infant carrier device 100 is folded, the folding of the lower leg rest 103 enables the lower leg rest fixing piece 13 to rotate relative to the backrest fixing piece 12, and the rotation of the lower leg rest fixing piece 13 enables the locking mechanism 14 to release the locking of the armrest fixing piece 11, namely the locking mechanism 14 releases the rotation of the armrest fixing piece 11 relative to the backrest fixing piece 12, so that the armrest fixing piece 11 automatically rotates relative to the backrest fixing piece 12 under the action of gravity, and the armrest 101 connected to the armrest fixing piece 11 is synchronously folded along with the lower leg rest 103; when the folded infant carrier 100 is unfolded, the calf rest fixing piece 13 rotates relative to the backrest fixing piece 12 due to the unfolding of the calf rest 103, and when the calf rest fixing piece 13 rotates to the unfolded state, the rotation of the armrest fixing piece 11 is locked by the locking mechanism 14, namely the armrest fixing piece 11 rotates relative to the backrest fixing piece 12 is locked by the locking mechanism 14, so that the armrest fixing piece 11 and the armrest 101 connected with the armrest fixing piece 11 are fixed in the unfolded state, and an infant on the seat 104 of the infant carrier 100 is protected; therefore, the handrail 101 and the crus rest 103 are synchronously folded, so that the folding operation of the handrail and the crus rest is simple and convenient by one-time operation, the folded size is smaller, the carrying and the transportation are convenient, and the practicability is stronger.

In addition, the specific structure and the unfolding and folding manner of the frame of the infant carrier device according to the present invention are well known to those skilled in the art, and will not be described in detail herein.

Referring to fig. 1 to 10a, the unfolding and folding method of the infant carrier of the present invention includes: the lower leg rest 103 is driven to rotate and unfold relative to the backrest 102, so that the lower leg rest 103 drives the locking mechanism 14 to lock the armrest 101 to rotate relative to the backrest 102, and the armrest 101 is fixed in an unfolded state; or, the lower leg rest 103 is driven to rotate and fold relative to the backrest 102, so that the lower leg rest 103 drives the locking mechanism 14 to unlock the rotation of the armrest 101 relative to the backrest 102, and the armrest 101 is synchronously folded and folded along with the lower leg rest 103. Wherein, the armrest 101 is pivoted with the backrest 102, the lower leg rest 103 is pivoted with the backrest 102, and the locking mechanism 14 is arranged between the armrest 101 and the lower leg rest 103. Specifically, an armrest fixing member 11 is connected to the armrest 101, a backrest fixing member 12 is connected to the backrest 102, a lower leg rest fixing member 13 is connected to the lower leg rest 103, the armrest fixing member 11 is pivotally connected to the backrest fixing member 12, and the lower leg rest fixing member 13 is pivotally connected to the backrest fixing member 12. The armrest fixing piece 11 and the lower leg rest fixing piece 13 are interlocked by the locking mechanism 14, when the lower leg rest fixing piece 13 rotates towards the unfolding direction (arrow G direction in fig. 8), the lower leg rest fixing piece 13 drives the locking mechanism 14 to lock the armrest fixing piece 11 to rotate relative to the backrest fixing piece 12, so that the armrest fixing piece 11 and the armrest 101 connected thereto are fixed in the unfolding state (the state shown in fig. 1-7) to protect the infant on the seat 104; when the lower leg rest fixing member 13 rotates in the folding direction (the direction of arrow F in fig. 1, the folding direction is opposite to the unfolding direction), the lower leg rest fixing member 13 will drive the locking mechanism 14 to unlock the rotation of the armrest fixing member 11 relative to the back rest fixing member 12, so that the armrest fixing member 11 can rotate relative to the back rest fixing member 12, and the armrest 101 and the lower leg rest 103 can be folded for carrying and transportation. The specific locking and unlocking is described as follows:

As shown in fig. 5 to 10a, the locking mechanism 14 includes a positioning pin 141, one end of the positioning pin 141 is elastically and eccentrically connected to the lower leg fixing member 13 in an abutting manner, the other end of the positioning pin 141 is opposite to the armrest fixing member 11, and the positioning pin 141 is inserted into the armrest fixing member 11 to be locked or withdrawn from the armrest fixing member 11 to be unlocked by changing a distance between the abutting position of the positioning pin 141 and the lower leg fixing member 13 with respect to a rotation center of the lower leg fixing member 13. Specifically, the armrest fixing member 11 is provided with a locking hole 111 into which the positioning pin 141 is inserted, and the armrest fixing member 11 is inserted, locked, unlocked and unlocked by the positioning pin 141, so that the armrest fixing member is simple and reliable in structure, and quick and convenient to operate. It should be noted that, in a preferred embodiment, the positioning pin 141 is connected to a positioning block 143, so that the positioning pin 141 is abutted against the lower leg rest fixing member 13 through the positioning block 143, and thus the positioning pin 141 is inserted into the armrest fixing member 11 to be locked or withdrawn from the armrest fixing member 11 to be unlocked. More specifically, when the present invention directly contacts with the lower leg support fixing member 13 through the positioning pin 141, the contact position between the positioning pin 141 and the lower leg support fixing member 13 is designed to be an arc structure, and the arc structure is engaged with each other, so that the operation is smoother when switching between the locking state (i.e. the unfolding state) and the unlocking state (i.e. the folding state). When the positioning pin 141 of the present invention directly contacts the lower leg support fixture 13 through the connected positioning block 143, the contact position of the positioning block 143 and the lower leg support fixture 13 is similarly arc-shaped.

As shown in fig. 5a, 7a, 8a and 10a, the positioning block 143 is provided with a third slide groove 141a, and the positioning pin 141 is slidably engaged with the third slide groove 141a, so that the positioning block 143 and the positioning pin 141 are slidably disposed.

As shown in fig. 5a, 7a, 8a and 10a, the lower leg rest fixing member 13 is arranged in an eccentric structure, and the positioning pin 141 interferes with different positions of the lower leg rest fixing member 13, so that the positioning pin 141 is inserted into the armrest fixing member 11 to be locked or withdrawn from the armrest fixing member 11 to be unlocked. Specifically, the lower leg rest fixing member 13 includes a body 131, the body 131 has a blocking rib 132 protruding outward, and the blocking rib 132 and the body 131 form an eccentric structure; when the positioning pin 141 abuts against the blocking rib 132, that is, when the abutting position of the positioning pin 141 and the handrail fixing member 11 is located on the region D shown in fig. 5a and 10a, the positioning pin 141 is inserted into the handrail fixing member 11 to be locked; when the positioning pin 141 abuts against the body 131, that is, when the abutting position of the positioning pin 141 and the handrail fixing member 11 is located on the region E shown in fig. 7a and 8a, the positioning pin 141 is released from the handrail fixing member 11.

As shown in fig. 8 and 10a, the backrest fixing member 12 is provided with a first sliding groove 121 for the positioning pin 141 to slide, so that the positioning pin 141 performs a locking or unlocking operation under the guiding action of the first sliding groove 121. The first slide groove 121 guides the positioning pin 141, so that the accuracy of locking or unlocking operation is improved.

As shown in fig. 5a, fig. 7a, fig. 8a and fig. 10a, a first elastic component 142 is compressively disposed between the positioning pin 141 and the backrest fixing member 12, the positioning pin 141 is biased in the unlocking direction by the first elastic component 142, and the positioning pin 141 is in a compressed state no matter in the unlocking state or the locking state, so that the positioning pin 141 is always elastically connected with the lower leg rest fixing member 13 in a contact manner by the first elastic component 142, and the change of the contact position of the two realizes the locking and unlocking functions of the armrest fixing member 11. Furthermore, the first elastic component 142 of the present invention is sleeved on the positioning pin 141 and is compressively disposed between the handrail fixing member 11 and the positioning block 143, and is elastically connected with the lower leg support fixing member 13 by the compressive first elastic component 142 in an abutting manner; the positioning block 143 protruding the positioning pin 141 realizes direct elastic contact with the lower leg rest fixing element 13, and compared with the direct contact between the positioning pin 141 and the lower leg rest fixing element 13, the contact area with the lower leg rest fixing element 13 is increased, therefore, the positioning block 143 directly realizes elastic contact connection with the lower leg rest fixing element 13, and due to the increase of the contact area, the stability and reliability of locking and unlocking of the locking mechanism 14 of the invention are further improved.

The above disclosure is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, so that the appended claims are intended to cover all such modifications and changes as fall within the true spirit of the invention.

Claims

1. A method for unfolding and folding a baby carrying device is characterized by comprising the following steps:

the shank rest is driven to rotate and unfold relative to the backrest, so that the shank rest drives the locking mechanism to lock the rotation of the armrest relative to the backrest, and the armrest is fixed in an unfolded state;

or the lower leg rest is driven to rotate and fold relative to the backrest, so that the lower leg rest drives the locking mechanism to unlock the armrest to rotate relative to the backrest, and the armrest is synchronously folded along with the lower leg rest;

the armrest is pivoted with the backrest, the shank rest is pivoted with the backrest, and the locking mechanism is arranged between the armrest and the shank rest.

2. The method of unfolding and folding an infant carrier according to claim 1, wherein a handrail mount is attached to the handrail, a backrest mount is attached to the backrest, a calf mount is attached to the calf rest, the handrail mount is pivotally connected to the backrest mount, and the calf rest mount is pivotally connected to the backrest mount.

3. The method of unfolding and folding a baby carrier according to claim 2, wherein the locking mechanism comprises a positioning pin, one end of the positioning pin is elastically and eccentrically connected with the lower leg rest fixing member in an abutting manner, the other end of the positioning pin is opposite to the armrest fixing member, and the positioning pin is inserted into the armrest fixing member to be locked or withdrawn from the armrest fixing member to be unlocked through the change of the distance between the abutting position of the positioning pin and the lower leg rest fixing member relative to the rotation center of the lower leg rest fixing member.

4. The method of unfolding and folding a baby carrier according to claim 3, wherein the abutting part of the positioning pin and the lower leg rest fixing part is designed to be an arc-shaped structure.

5. The method of unfolding and folding a baby carrier according to claim 3, wherein the positioning pin is connected to a positioning block such that the positioning pin abuts against the lower leg rest fixture through the positioning block.

6. The method of claim 5, wherein a third slot is formed in the positioning block, and the positioning pin is slidably engaged with the third slot, such that the positioning block and the positioning pin are slidably disposed.

7. The method of claim 3, wherein the calf rest fastener is configured to be eccentric, and the positioning pins are inserted into the armrest fastener and released from the armrest fastener by interference of the positioning pins with different positions of the calf rest fastener.

8. The method of deploying and collapsing the infant carrier of claim 7, wherein the calf rest fastener includes a body having an outwardly projecting barrier rib that forms the eccentric configuration with the body; when the positioning pin abuts against the blocking rib, the positioning pin is inserted into the handrail fixing piece to be locked; when the positioning pin is abutted against the body, the positioning pin is withdrawn from the handrail fixing piece for unlocking.

9. The method for unfolding and folding a baby carrier according to claim 3, wherein a first sliding slot for sliding the positioning pin is formed on the backrest fixing member, so that the positioning pin performs a locking or unlocking action under the guiding action of the first sliding slot.

10. The method of claim 3, wherein a first resilient member is compressively disposed between the positioning pin and the backrest fastener, and the positioning pin is biased in the unlocking direction by the first resilient member, such that the positioning pin is always resiliently in abutting connection with the calf support fastener by the first resilient member.