CN211468552U - Foldable frame and baby carriage - Google Patents

Abstract

The utility model discloses a folding frame and bassinet, the folding frame includes the frame main part, this frame main part includes the handrail frame, two sets of side bearer and cross-brace frame, the cross-brace frame is connected between two sets of side bearer, the side bearer is rotationally connected with the handrail frame through first joint subassembly, be provided with first locking mechanism on handrail frame or the first joint subassembly, be provided with first unlocking mechanism on the handrail frame, be provided with second unlocking mechanism on the first joint subassembly, the side bearer includes the transmission frame, first wheel carrier, second wheel carrier and seat frame, the transmission frame includes transfer line and telescopic link, the transfer line, telescopic link and first wheel carrier form first link structure, be provided with second locking mechanism on the telescopic link; the seat frame is connected with the first connecting rod structure through a second connecting rod structure; the first wheel frame and the second wheel frame are connected with the second connecting rod structure through a third connecting rod structure. Through the cooperation of first connecting rod structure, second connecting rod structure and third connecting rod, the frame can realize the linkage folding, and convenience of customers uses.

Description

Foldable frame and baby carriage

Technical Field

The utility model relates to a baby articles for use field, in particular to bassinet.

Background

The baby carriage capable of being pushed by hands is a common baby appliance, can be used for a baby to sit and lie and is pushed by a guardian to walk, so that the baby can go out conveniently, and the burden of the guardian is reduced. Some foldable strollers are designed to be foldable for storage and carrying, and some foldable strollers generally require that a portion of the stroller be folded in sequence, which results in the inability of many users to skillfully perform the folding process, and require that a portion of the stroller be unfolded in sequence during the unfolding operation, which is cumbersome for many users to use. In addition, the stroller remains bulky after being folded, requiring more space, which can be inconvenient to store and transport.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide folding frame, can be convenient for fold.

The utility model discloses still provide the bassinet that has above-mentioned folding frame.

According to the first aspect of the present invention, a foldable vehicle frame is provided, which comprises a vehicle frame main body, wherein the vehicle frame main body comprises a handrail frame, two sets of side frames respectively arranged at the left and right sides, and a cross-brace connected between the two sets of side frames, the two sets of side frames are respectively rotatably connected with the handrail frame through a first joint component, wherein a first locking mechanism capable of locking the first joint component is arranged on the handrail frame or the first joint component, a first unlocking mechanism capable of being linked with the first locking mechanism is arranged on the handrail frame, and a second unlocking mechanism is arranged on the first joint component; the side frame comprises a transmission frame, a first wheel frame, a second wheel frame and a seat frame, the first wheel frame and the second wheel frame are rotatably connected through a second joint component, the transmission frame comprises a transmission rod and a telescopic rod, one end of the transmission rod and one end of the telescopic rod are rotatably connected through the first joint component, the other end of the telescopic rod is rotatably connected with the first wheel frame, the other end of the transmission rod is rotatably connected with the first wheel frame through the second joint component, so that the transmission rod, the telescopic rod and the first wheel frame form a first connection rod structure, and a second locking mechanism which can be linked with a second unlocking mechanism is arranged on the telescopic rod; the seat frame is connected with the first connecting rod structure through a second connecting rod structure; the first wheel carrier and the second wheel carrier are connected with the second connecting rod structure through a third connecting rod structure.

The beneficial effect that above-mentioned scheme has: through the cooperation of first connecting rod structure, second connecting rod structure and third connecting rod, the frame can realize the linkage folding, convenience of customers' use.

According to the utility model discloses the first aspect folding frame, be provided with first member on the side bearer, the one end of first member with the seat frame is rotationally connected, the other end of first member passes through the second joint subassembly with first wheel carrier is rotationally connected, the seat frame with the telescopic link is rotationally connected, so that the telescopic link the seat frame first member and first wheel carrier forms second connecting rod structure.

According to the utility model discloses first aspect folding frame, be provided with second member, third member and fourth member on the side bearer, the one end of second member with the middle part of first member is rotationally connected, the other end of second member with the one end of third member is rotationally connected, the middle part of third member with first wheel carrier is rotationally connected, the other end of third member with the one end of fourth member is rotationally connected, the other end of fourth member with the second wheel carrier is rotationally connected, so that first member the second member the third member fourth member, first wheel carrier and the second wheel carrier forms third link structure.

According to the utility model discloses the first aspect folding frame, first joint subassembly is including wearing to locate first joint piece, second joint piece and the third joint piece on the primary shaft member, first joint piece with the handrail frame is connected, the second joint piece with the transfer line is connected, the third joint piece with the telescopic link is connected.

According to the foldable frame of the first aspect of the present invention, the first locking mechanism comprises a first stopper, a first elastic member and a first locking block, which are sequentially arranged on the armrest frame; the first locking block can be slidably inserted into the armrest frame, the first limiting block is fixedly connected with the armrest frame, a first locking hole matched with the first locking block is formed in the third joint block, and the first locking block is connected with the first unlocking mechanism.

According to the utility model discloses first aspect folding frame, first release mechanism includes first shifting block and first stay cord, first shifting block slidable set up in on the handrail frame, first stay cord is connected first shifting block with first locking piece.

According to the foldable frame of the first aspect of the present invention, the telescopic rod comprises an outer tube and an inner tube inserted into the outer tube, and the second locking mechanism comprises a locking tube, a second elastic member, a first lock pin, a second lock block and a third lock block; the locking pipe is inserted and located the inner tube, and be provided with first guide slot and spacing portion on the locking pipe, second locking piece slidable set up in the locking pipe, just be provided with on the second locking piece with the second guide slot that has the contained angle between the first guide slot, the second elastic component is located spacing portion with between the second locking piece, third locking piece slidable set up in on the second locking piece, first lockpin set up in on the third locking piece, just first lockpin is inserted and is located first guide slot with the second guide slot, be provided with on the outer tube with third locking piece matched with second locking hole, the second locking piece with second release mechanism is connected.

According to the utility model discloses a folding frame, second release mechanism include second shifting block, second stay cord and second lockpin, second shifting block slidable set up in on the third joint piece, the second lockpin set up in on the second shifting block, the second stay cord is connected the second shifting block with the second locking piece, be provided with on the first joint piece and wind the third guide slot that the first axle member was arranged and is the arc type, the second lockpin is inserted and is located the third guide slot, the third guide slot with distance between the first axle member increases gradually or reduces along clockwise.

According to the foldable frame of the first aspect of the present invention, the armrest frame comprises a first armrest rod and two second armrest rods respectively disposed at the left and right sides of the first armrest rod, one end of the second armrest rod is connected to the first joint assembly, and the other end of the second armrest rod is rotatably connected to the first armrest rod via a first pivot; the cross support frame comprises a first cross support rod and two second cross support rods which are respectively arranged at the left side and the right side of the first cross support rod, one end of each second cross support rod is connected with the side frame, and the other end of each second cross support rod is rotatably connected with the first cross support rod through a second pivot; the frame body may be folded to move the first pivot and the second pivot to be collinear.

According to a second aspect of the invention, a stroller is provided, comprising a foldable frame as described above.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

FIG. 1 is a block diagram of an embodiment of a foldable vehicle frame;

FIG. 2 is a cross-sectional view of an embodiment of a foldable frame;

FIG. 3 is another cross-sectional view of an embodiment of the foldable frame;

fig. 4 is an enlarged view of a portion a in fig. 3;

fig. 5 is an enlarged view of a portion B in fig. 3;

FIG. 6 is an exploded view of an embodiment of the foldable frame;

FIG. 7 is an exploded view of the telescoping pole in the embodiment of the foldable frame;

FIG. 8 is an exploded view of a first joint assembly in an embodiment of the foldable carriage;

FIG. 9 is another exploded view of the first joint assembly in the foldable frame embodiment;

FIG. 10 is a block diagram of a first joint block in an embodiment of the foldable carriage;

FIG. 11 is an exploded view of a second joint assembly in the foldable frame embodiment;

fig. 12 is a block diagram of an embodiment of the foldable frame after folding.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the terms greater than, less than, exceeding, etc. are understood to exclude the number, and the terms above, below, inside, etc. are understood to include the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 12, the foldable vehicle frame of the embodiment of the present invention includes a frame body, the frame body includes two sets of armrest frames 10, side frames and cross-brace 30, the side frames are disposed in two sets, the two sets of side frames are disposed on the left and right sides of the armrest frames 10, the cross-brace 30 is disposed between the two sets of side frames, the cross-brace 30 connects the two sets of side frames, and the two sets of side frames are respectively rotatably connected with the armrest frames 10 through first joint assemblies 41. The armrest frame 10 is provided with a first locking mechanism and a first unlocking mechanism which can be linked with the first locking mechanism, and the first joint assembly 41 is provided with a second unlocking mechanism which can move along with the first joint assembly 41. When the frame body is unfolded, the first joint assembly 41 can be locked through the first locking mechanism so as to limit the armrest frame 10 to rotate relative to the side frame; the first locking mechanism can be unlocked through the first unlocking mechanism, so that the armrest frame 10 can be rotated and folded relative to the side frame.

The side frame comprises a transmission frame 21, a first wheel frame 22, a second wheel frame 23 and a seat frame 24, wherein the first wheel frame 22 and the second wheel frame 23 are rotatably connected through a second joint component 42, the transmission frame 21 comprises a transmission rod 211 and a telescopic rod 212, one end of the transmission rod 211 and one end of the telescopic rod 212 are rotatably connected through a first joint component 41, the other end of the telescopic rod 212 is rotatably connected with the first wheel frame 22, the other end of the transmission rod is rotatably connected with the first wheel frame 22 through a second joint component 42, so that the transmission rod 211, the telescopic rod 212 and the first wheel frame 22 form a first connection rod structure, and a second locking mechanism capable of being in linkage with a second unlocking mechanism is arranged on the telescopic rod 212. When the frame body is unfolded, the telescopic rod 212 can be locked by the second locking mechanism, and the telescopic action of the telescopic rod 212 is limited. The seat frame 24 is connected to the first link structure by a second link structure, and the first wheel carrier 22 and the second wheel carrier 23 are connected to the second link structure by a third link structure.

Through the structure, when the unfolded frame main body needs to be folded, the first locking mechanism is unlocked through the first unlocking mechanism, the first joint component 41 can act, and the armrest frame 10 can rotate and fold relative to the side frame; the second unlocking mechanism can be driven to act in the action process of the first joint assembly 41, and the second locking mechanism is driven to act through the second unlocking mechanism to unlock the second locking mechanism; the telescopic rod 212 can be retracted under the action of acting force and gravity of a user, the first connecting rod structure acts, and the transmission frame 21 is folded; the second and third link structures follow such that the seat frame 24 is folded rotationally, and the first and second wheel frames 22 and 23 are folded rotationally toward each other. As above, the frame main body can be folded in a linkage manner, so that the folding of a user is convenient and fast, and the use of the user is convenient.

Referring to fig. 1 and 2, a first rod 251 is disposed on the side frame, one end of the first rod 251 is rotatably connected to the seat frame 24 through a pivot, the other end of the first rod 251 is rotatably connected to the first wheel frame 22 through the second joint assembly 42, and the seat frame 24 is rotatably connected to the telescopic rod 212, so that the telescopic rod 212, the seat frame 24, the first rod 251 and the first wheel frame 22 form the second link structure.

The side frames are provided with a second rod 252, a third rod 253 and a fourth rod 254, one end of the second rod 252 is rotatably connected with the middle of the first rod 251 through a pivot, the other end of the second rod 252 is rotatably connected with one end of the third rod 253 through a pivot, the middle of the third rod 253 is rotatably connected with the first wheel frame 22 through a pivot, the other end of the third rod 253 is rotatably connected with one end of the fourth rod 254 through a pivot, and the other end of the fourth rod 254 is rotatably connected with the second wheel frame 23 through a pivot, so that the first rod 251, the second rod 252, the third rod 253, the fourth rod 254, the first wheel frame 22 and the second wheel frame 23 form the third link structure.

Referring to fig. 6, 8 and 9, the first joint assembly 41 includes a first joint block 411, a second joint block 412 and a third joint block 413 which are inserted into the first shaft member (not shown), the first joint block 411 is connected to the armrest frame 10, the second joint block 412 is connected to the driving rod 211, and the third joint block 413 is connected to the telescopic rod 212.

The first locking mechanism includes a first stopper 511, a first elastic member 512, and a first locking piece 513 sequentially arranged on the armrest frame 10. The first limiting block 511 is fixedly connected with the armrest frame 10, the first locking block 513 is slidably inserted into the armrest frame 10, the third joint block 413 is provided with a first locking hole 4131 matched with the first locking block 513, and the first locking block 513 is connected with the first unlocking mechanism.

The first unlocking mechanism comprises a first shifting block 621 and a first pull rope, the first shifting block 621 is sleeved on the armrest frame 10 and can slide along the armrest frame 10, and the first pull rope is connected with the first shifting block 621 and the first locking block 513.

When the frame body is unfolded, the first locking block 513 is inserted into the first locking hole 4131, the first locking mechanism locks the first joint assembly 41, the first joint block 411 cannot rotate relative to the third joint block 413, and the armrest frame 10 cannot be folded. When folding is needed, the first shifting block 621 is pushed, the first locking block 513 can be pulled to move through the first pull rope, so that the first locking block 513 moves out of the first locking hole 4131, the first locking mechanism is unlocked, and the armrest frame 10 can be folded in a rotating manner relative to the side frame.

In some embodiments, the first shifting block 621 can be pivoted on the armrest frame 10, and the first pulling rope is wound around the first shifting block 621. The first locking block 513 may be pivoted to the first joint block 411, a torsion spring may be disposed on the first joint block 411, two torsion arms of the torsion spring respectively abut against the first joint block 411 and the first locking block 513, and the first pulling rope pulls the first locking block 513 to rotate, so that the first locking block 513 moves out of the first locking hole 4131.

In some embodiments, the first locking mechanism may be disposed on the first joint component 41, that is, the first limiting block 511, the first elastic element 512 and the first locking block 513 are sequentially arranged on the first joint block 411.

Referring to fig. 4 and 7, the telescopic rod 212 includes an outer tube 2121 and an inner tube 2122 inserted into the outer tube 2121, and the second locking mechanism includes a locking tube 521, a second elastic member 522, a first locking pin 523, a second locking block 524, and a third locking block 525. The locking pipe 521 is inserted into the inner pipe 2122, a first guide groove 5211 and a limiting portion 5212 are disposed on the locking pipe 521, the second locking block 524 is slidably disposed in the locking pipe 521, a second guide groove 5241 is disposed on the second locking block 524, and an included angle is formed between the second guide groove 5241 and the first guide groove 5211, that is, the second guide groove 5241 is inclined or perpendicular to the first guide groove 5211. The second elastic member 522 is located between the limiting portion 5212 and the second locking block 524, the third locking block 525 is slidably disposed on the second locking block 524, the first locking pin 523 is disposed on the third locking block 525, the first locking pin 523 is inserted into the first guide groove 5211 and the second guide groove 5241, the outer tube 2121 is provided with a second locking hole matched with the third locking block 525, and the second locking block 524 are disposed on the outer tube 2121

The second unlocking mechanism is connected.

The second unlocking mechanism includes a second shift block 611, a second pull rope 612, and a second lock pin 613, the second shift block 611 is slidably disposed on the third joint block 413, the second lock pin 613 is disposed on the second shift block 611, the second pull rope 612 connects the second shift block 611 and the second lock block 524, a third guide groove 4111 which is arranged around the first shaft member and has an arc shape is disposed on the first joint block 411, and the second lock pin 613 is inserted in the third guide groove 4111. The distance between the third guiding groove 4111 and the first shaft member gradually increases or decreases in a clockwise direction, that is, the distance between the second lock pin 613 and the first shaft member may gradually change when the second lock pin 613 moves along the third guiding groove 4111.

When the frame body is unfolded, the third locking block 525 is inserted into the second locking hole to limit the inner tube 2122 to slide relative to the outer tube 2121, so that the telescopic rod 212, the transmission rod 211 and the first wheel frame 22 can form a stable triangular support structure to limit the second joint block 412 to rotate relative to the third joint block 413. When the frame body is folded, after the first locking mechanism is unlocked, the first joint block 411 rotates relative to the third joint block 413, the second lock pin 613 moves along the third guide groove 4111, so that the third shifting block moves along the third joint block 413, the second pull rope 612 can pull the second locking block 524 to move, the first lock pin 523 moves along the first guide groove 5211 and the second guide groove 5241, the third locking block 525 can be moved out of the second locking hole, and the second locking mechanism can be unlocked.

Specifically, when the frame is folded, the armrest frame 10 is folded forward relative to the side frame, and the distance between the third guide groove 4111 and the first shaft member gradually increases along the clockwise direction. Accordingly, when the handle frame 10 is folded backward with respect to the side frame, the distance between the third guide groove 4111 and the first shaft member gradually decreases in a clockwise direction.

In some embodiments, the second pulling rope 612 can be connected to the first joint block 411, and when the first joint block 411 rotates relative to the third joint block 413, the second pulling rope 612 can be wound around the first joint block 411, so that the second locking block 524 can be pulled to move by the second pulling rope 612. In addition, in some embodiments, the third locking block 525 may be pivotally disposed on the locking tube 521, a torsion spring may be disposed in the locking tube 521, two torsion arms of the torsion spring respectively abut against the locking tube 521 and the third locking block 525, the second pulling rope 612 is connected to the third locking block 525, and the third locking block 525 is pulled by the second pulling rope 612 to rotate, so that the third locking block 525 moves out of the second locking hole.

Referring to fig. 6 and 11, the second joint assembly 42 includes a fourth joint block 421, a fifth joint block 422 and a sixth joint block 423, the fourth joint block 421, the fifth joint block 422 and the sixth joint block 423 are disposed through a second shaft member (not shown in the drawings) so that the fourth joint block 421, the fifth joint block 422 and the sixth joint block 423 can rotate relative to each other, the fourth joint block 421 is connected to the transmission rod 211, the fifth joint block 422 is connected to the first wheel frame 22, and the sixth joint block 423 is connected to the second wheel frame 23. The first rod 251 may be disposed through the second rod or rotatably connected to the sixth joint 423 via a pivot.

Referring to fig. 6, the handle frame 10 includes a first handle bar 11 and two second handle bars 12 respectively disposed at left and right sides of the first handle bar 11, one end of the second handle bar 12 is connected to a first joint block 411, and the other end of the second handle bar 12 is rotatably connected to the first handle bar 11 by a first pivot 13. The cross frame 30 includes a first cross brace 31 and two second cross braces 32 respectively disposed at the left and right sides of the first cross brace 31, one end of each second cross brace 32 is connected to the side frame, and the other end of each second cross brace 32 is rotatably connected to the first cross brace 31 through a second pivot 33. Specifically, the cross frames 30 are arranged in two groups, wherein one end of the second cross bar 32 of one group of cross frames 30 is connected to the front wheel frame, and one end of the second cross bar 32 of the other group of cross frames 30 is connected to the rear wheel frame. The first pivot 13 and the second pivot 33 can be moved to be collinear when the frame body is folded, i.e. the axis of the first pivot 13 and the axis of the second pivot 33 are located on the same line. Through the structure, after the linkage of the frame main body is completed, the armrest frame 10 and the cross support frame 30 can be rotated and folded, so that the size of the frame after the folding is further reduced, the occupied space is reduced, and the storage and the transportation are convenient.

In the above embodiments, the adjacent rod members may also be rotatably connected by a hinge or the like.

In the above embodiments, the first elastic element 512 and the second elastic element 522 may be a compression spring, or a rubber pad.

The folding process of the frame main body is as follows:

(1) the first shifting block 621 is shifted, the first locking block 513 is pulled to act through the first pull rope, the first locking block 513 moves out of the first locking hole 4131, and the first locking mechanism is unlocked;

(2) in the process that the armrest frame 10 rotates and folds relative to the side frame, the first joint block 411 rotates relative to the third joint block 413, the second lock pin 613 moves along the third guide groove 4111, the second pull rope drives the second locking block 524 and the third locking block 525 to move, the third locking block 525 moves out of the second locking hole, and the second locking mechanism is unlocked;

(3) under the action of acting force and gravity of a user, the telescopic rod 212 retracts, the first connecting rod structure acts to fold the transmission frame 21, the action of the first connecting rod structure can drive the second connecting rod structure and the third connecting rod structure to act, so that the seat frame 24 rotates and folds relative to the transmission frame 21, the first wheel frame 22 and the second wheel frame 23 rotate and fold oppositely, and the first pivot 13 and the second pivot 33 move to be collinear, so that the linkage folding of the frame main body can be completed;

(4) and folding the armrest frame 10 and the cross-frame 30 to reduce the width of the frame body and the volume after folding.

The utility model also provides a bassinet, it is including sitting pocket (not shown in the figure) and foretell folding frame, sits the pocket and installs on seat frame 24. Through the structure, the baby carriage can be linked and folded, the folding operation of a user is facilitated, the size and the width of the folded baby carriage are small, and the storage transportation is facilitated.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (10)

1. The foldable frame comprises a frame main body and is characterized in that the frame main body comprises armrest frames, two groups of side frames which are respectively arranged at the left side and the right side and a cross-bracing frame which is connected between the two groups of side frames, the two groups of side frames are respectively rotatably connected with the armrest frames through first joint components, wherein,

a first locking mechanism capable of locking the first joint assembly is arranged on the armrest frame or the first joint assembly, a first unlocking mechanism capable of being linked with the first locking mechanism is arranged on the armrest frame, and a second unlocking mechanism is arranged on the first joint assembly;

the side frame comprises a transmission frame, a first wheel frame, a second wheel frame and a seat frame, the first wheel frame and the second wheel frame are rotatably connected through a second joint component, the transmission frame comprises a transmission rod and a telescopic rod, one end of the transmission rod and one end of the telescopic rod are rotatably connected through the first joint component, the other end of the telescopic rod is rotatably connected with the first wheel frame, the other end of the transmission rod is rotatably connected with the first wheel frame through the second joint component, so that the transmission rod, the telescopic rod and the first wheel frame form a first connection rod structure, and a second locking mechanism which can be linked with a second unlocking mechanism is arranged on the telescopic rod;

the seat frame is connected with the first connecting rod structure through a second connecting rod structure;

the first wheel carrier and the second wheel carrier are connected with the second connecting rod structure through a third connecting rod structure.

2. The foldable frame as claimed in claim 1, wherein the side frame is provided with a first rod, one end of the first rod is rotatably connected to the seat frame, the other end of the first rod is rotatably connected to the first wheel frame through the second joint assembly, and the seat frame is rotatably connected to the telescopic rod, so that the telescopic rod, the seat frame, the first rod and the first wheel frame form the second link structure.

3. The foldable frame as claimed in claim 2, wherein the side frame is provided with a second rod, a third rod and a fourth rod, one end of the second rod is rotatably connected to the middle of the first rod, the other end of the second rod is rotatably connected to one end of the third rod, the middle of the third rod is rotatably connected to the first wheel frame, the other end of the third rod is rotatably connected to one end of the fourth rod, and the other end of the fourth rod is rotatably connected to the second wheel frame, so that the third link structure is formed by the first rod, the second rod, the third rod, the fourth rod, the first wheel frame and the second wheel frame.

4. The foldable frame of claim 1, wherein the first joint assembly comprises a first joint block, a second joint block and a third joint block, the first joint block, the second joint block and the third joint block are arranged on the first shaft member in a penetrating mode, the first joint block is connected with the armrest frame, the second joint block is connected with the transmission rod, and the third joint block is connected with the telescopic rod.

5. The foldable frame of claim 4, wherein the first locking mechanism comprises a first limiting block, a first elastic member and a first locking block which are arranged on the armrest frame in sequence; the first locking block can be slidably inserted into the armrest frame, the first limiting block is fixedly connected with the armrest frame, a first locking hole matched with the first locking block is formed in the third joint block, and the first locking block is connected with the first unlocking mechanism.

6. The foldable frame of claim 5, wherein the first unlocking mechanism comprises a first shift block slidably disposed on the armrest frame and a first pull cord connecting the first shift block and the first lock block.

7. The foldable frame of claim 5, wherein the telescoping rod comprises an outer tube and an inner tube inserted into the outer tube, and the second locking mechanism comprises a locking tube, a second elastic member, a first lock pin, a second lock block, and a third lock block;

the locking pipe is inserted and located the inner tube, and be provided with first guide slot and spacing portion on the locking pipe, second locking piece slidable set up in the locking pipe, just be provided with on the second locking piece with the second guide slot that has the contained angle between the first guide slot, the second elastic component is located spacing portion with between the second locking piece, third locking piece slidable set up in on the second locking piece, first lockpin set up in on the third locking piece, just first lockpin is inserted and is located first guide slot with the second guide slot, be provided with on the outer tube with third locking piece matched with second locking hole, the second locking piece with second release mechanism is connected.

8. The foldable frame of claim 7, wherein the second unlocking mechanism comprises a second shift block, a second pull rope and a second lock pin, the second shift block is slidably disposed on the third joint block, the second lock pin is disposed on the second shift block, the second pull rope connects the second shift block and the second lock block, a third guide groove which is arranged around the first shaft member and is arc-shaped is disposed on the first joint block, the second lock pin is inserted into the third guide groove, and a distance between the third guide groove and the first shaft member gradually increases or decreases along a clockwise direction.

9. The foldable frame of claim 1, wherein the armrest frame comprises a first armrest rod and two second armrest rods respectively disposed at the left and right sides of the first armrest rod, one end of the second armrest rod is connected to the first joint assembly, and the other end of the second armrest rod is rotatably connected to the first armrest rod via a first pivot;

the cross support frame comprises a first cross support rod and two second cross support rods which are respectively arranged at the left side and the right side of the first cross support rod, one end of each second cross support rod is connected with the side frame, and the other end of each second cross support rod is rotatably connected with the first cross support rod through a second pivot;

the frame body may be folded to move the first pivot and the second pivot to be collinear.

10. A buggy comprising a foldable frame as claimed in any one of claims 1 to 9.

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