CN214803731U

CN214803731U - Folding bed guardrail frame, bed guardrail and crib

Info

Publication number: CN214803731U
Application number: CN202023004173.0U
Authority: CN
Inventors: 袁文彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-11-23
Anticipated expiration: 2030-12-14

Abstract

The application relates to the technical field of furniture, in particular to a folding bed guardrail frame, a bed guardrail and a baby bed, wherein the folding bed guardrail frame comprises a left vertical rod and a right vertical rod which are arranged oppositely, a folding upper cross rod and a folding lower cross rod are arranged between the left vertical rod and the right vertical rod, and the left vertical rod and the right vertical rod are relatively close to each other to be folded when the upper cross rod and the lower cross rod are folded; a bed guardrail and a crib are provided with the bed guardrail frame. The application provides a foldable bed guardrail frame, bed guardrail and crib, bed guardrail frame wherein can reach the effect that occupation space is littleer through folding, and the operation is simpler, is convenient for accomodate and carry.

Description

Folding bed guardrail frame, bed guardrail and crib

[ technical field ] A method for producing a semiconductor device

The application relates to the technical field of furniture, especially, relate to foldable bed guardrail frame, bed guardrail and crib.

[ background of the invention ]

In order to prevent people, especially young children from falling off from the bed when sleeping, bed guardrails are usually arranged on one side or two sides of the bed, the existing bed guardrails are formed by split parts and need to be spliced when in use, and the parts need to be respectively disassembled and then stacked when not in use, so that the bed guardrail is inconvenient for daily use and storage.

[ summary of the invention ]

An object of this application is to provide foldable bed guardrail frame, bed guardrail and crib, bed guardrail frame wherein can reach the effect that occupation space is littleer through folding, and the operation is simpler, is convenient for accomodate and carry.

The application is realized by the following technical scheme:

folding bed guardrail frame, including relative left montant and the right montant that sets up, be equipped with folding horizontal pole and sheer pole between left side montant and the right montant, it is folding during horizontal pole and sheer pole left side montant and right montant are close to relatively and receive receipts.

The folding bed guardrail frame comprises an upper transverse rod and an upper transverse rod, wherein the first end of the upper transverse rod is hinged with the first end of the upper transverse rod, the second end of the upper transverse rod is hinged with the left vertical rod, and the second end of the upper transverse rod is hinged with the right vertical rod;

the sheer pole includes horizontal first pole and horizontal two poles down, the first end of horizontal first pole and the first end of horizontal two poles down are articulated mutually, the second end of horizontal first pole down with left side montant is articulated mutually, the second end of horizontal two poles down with right side montant is articulated mutually.

According to the folding bed guardrail frame, the first end of the upper transverse rod is hinged with the first end of the upper transverse rod through the upper middle hinge mechanism, the upper middle hinge mechanism comprises a first hinge joint and a second hinge joint, one end of the first hinge joint is hinged with the first upper transverse rod, the other end of the first hinge joint is connected with the second upper transverse rod, the other end of the second hinge joint is connected with the second upper transverse rod, and the first hinge joint is internally provided with a locking groove extending along the length direction of the first upper transverse rod;

the middle-upper hinge mechanism further comprises a top unfolding locking mechanism used for locking the first hinge head and the second hinge head so as to enable the upper transverse first rod and the upper transverse second rod to be in an unfolded state, the top unfolding locking mechanism comprises a first locking block and a locking protrusion arranged on the first locking block, one end of the first locking block extends into the second hinge head along the direction of the upper transverse second rod, the other end of the first locking block elastically extends out of the second hinge head and is opposite to the upper transverse first rod, and the locking protrusion extends into the locking groove and can slide along the locking groove;

the locking protrusion is pressed against one end, opposite to the upper transverse rod, of the first locking block, the locking protrusion exits from the locking groove, and the upper unfolding locking mechanism is unlocked, so that the first hinge joint can rotate relative to the second hinge joint.

The folding bed fence frame as described above, wherein the first end of the lower cross bar and the first end of the lower cross bar are hinged by a middle lower hinge mechanism, the middle lower hinge mechanism comprising: the hinge joint connecting block, the third hinge joint, the fourth hinge joint and the lower unfolding locking mechanism are arranged on the lower portion of the lower unfolding lock;

one end of the hinge joint connecting block is hinged with a third hinge joint, the other end of the hinge joint connecting block is hinged with a fourth hinge joint, a first slide way penetrates through the third hinge joint, and a second slide way corresponding to the first slide way penetrates through the fourth hinge joint;

the lower unfolding locking mechanism is used for locking the third hinged joint and the fourth hinged joint so as to enable a first lower transverse rod and a second lower transverse rod to be in an unfolded state, the lower unfolding locking mechanism comprises a first ejector piece arranged in the first slideway in a sliding mode and a second ejector piece arranged in the second slideway in a sliding mode, and the second ejector piece can extend into the first slideway so as to lock the third hinged joint and the fourth hinged joint;

and jacking the first jacking piece to enable the second jacking piece to exit from the first slideway, and unlocking the lower unfolding locking mechanism to enable the third hinge joint and the fourth hinge joint to rotate relative to the hinge joint connecting block.

According to the folding bed guardrail frame, the second end of the upper transverse rod is hinged with the left vertical rod through the left upper hinge mechanism, and the second end of the upper transverse rod is hinged with the right vertical rod through the right upper hinge mechanism;

the left upper hinge mechanism comprises a left upper sliding seat which is sleeved on the left vertical rod and can slide up and down along the left vertical rod, a left upper locking hole is formed in the left upper sliding seat, an upper left elastic bulge which can extend into the left upper locking hole to lock the left upper sliding seat is arranged at the upper end of the left vertical rod, and a left upper button which is used for jacking the left upper elastic bulge to enable the left upper sliding seat to slide up and down along the left vertical rod is further arranged in the left upper locking hole;

the upper right hinge mechanism comprises an upper right sliding seat which is sleeved on the right vertical rod and can slide up and down along the right vertical rod.

As above foldable bed guardrail frame, be equipped with the upper right lockhole on the upper right sliding seat, the upper end of right side montant is equipped with and stretches into in the upper right lockhole in order to lock the upper right elastic bulge of upper right sliding seat, still be equipped with in the upper right lockhole and be used for the roof pressure the upper right elastic bulge so that the upper right sliding seat can be followed the upper right button of gliding from top to bottom of right montant on the right side.

According to the folding bed guardrail frame, the second end of the lower transverse rod is hinged with the left vertical rod through the left lower hinge mechanism, and the second end of the lower transverse rod is hinged with the right vertical rod through the right lower hinge mechanism;

the left lower hinge mechanism comprises a left lower hinge seat, one end of the left lower hinge seat is fixedly connected to the lower end of the left vertical rod, and the other end of the left lower hinge seat is hinged to the lower transverse rod;

the right lower hinge mechanism comprises a right lower hinge seat, one end of the right lower hinge seat is fixedly connected with the lower end of the right vertical rod, and the other end of the right lower hinge seat is hinged with the lower transverse two rods.

According to the folding bed guardrail frame, the lower ends of the left vertical rod and the right vertical rod are respectively provided with the base pins which extend in the direction vertical to the length direction of the left vertical rod and the right vertical rod.

This application still provides a bed guardrail, include as above bed guardrail frame, left side montant, right montant, last horizontal pole and sheer pole enclose to establish and are equipped with the flexibility between the frame of formation and enclose cloth.

The application also provides a crib, including the bed body and as above the bed guardrail, the bed guardrail is located one side of bed body.

Compared with the prior art, the method has the following advantages:

1. the application provides a bed guardrail frame to and use this bed guardrail frame's bed guardrail and crib, bed guardrail frame wherein can reach the effect that occupation space is littleer through folding, and the operation is simpler, is convenient for accomodate and carry.

2. The upper left hinge mechanism and the upper right hinge mechanism can be folded through the hinge structures and can slide to the bottom, the occupation of the upper space by the upper transverse rod after folding is effectively reduced, and the folding structure is further compact.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a structural schematic view of a bed guardrail frame in an unfolded state according to embodiment 1 of the present application.

Fig. 2 is an exploded view of a bed fence frame according to embodiment 1 of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 2 according to embodiment 1 of the present application.

Fig. 4 is an enlarged view of a portion B in fig. 2 according to embodiment 1 of the present application.

Fig. 5 is an enlarged view of a portion C in fig. 2 according to embodiment 1 of the present application.

Fig. 6 is an enlarged view of a portion D in fig. 2 according to embodiment 1 of the present application.

Fig. 7 is an enlarged view of a portion E in fig. 2 according to embodiment 1 of the present application.

Fig. 8 is a schematic structural diagram of the first joint according to embodiment 1 of the present application.

Fig. 9 is a schematic structural view of the upper middle hinge mechanism according to embodiment 1 of the present application.

Fig. 10 is a schematic structural view of a middle-lower hinge mechanism according to embodiment 1 of the present application.

Fig. 11 is a front view of a bed fence frame in a folded state according to embodiment 1 of the present application.

Fig. 12 is a left side view of the bed fence frame in a retracted state according to embodiment 1 of the present application.

[ detailed description ] embodiments

In order to make the technical problems, technical solutions and advantageous effects solved by the present application more clear and obvious, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Example 1

As shown in fig. 1 to 12, the present application provides a bed guardrail frame, including relative left montant 1 and the right montant 2 that sets up, be equipped with scalable and folding last horizontal pole 3 and sheer pole 4 between left side montant 1 and the right montant 2, it is folding after can contracting along its length direction respectively to go up horizontal pole 3 and sheer pole 4, and makes left side montant 1 and right montant 2 are close to relatively and receive the receipts.

Bed guardrail frame only needs to expand respectively with entablature 3 and sheer pole 4 and extension when using, can form the guardrail form and install in the bed side, and then during accomodating is with entablature 3 and sheer pole 4 shrink and folding. The operation is simple and fast, the folding state occupies small space, and the storage and the carrying are convenient.

The folding function of this implementation is realized through articulated joint, simple structure, and the operation of being convenient for specifically is: the upper cross rod 3 comprises an upper cross rod 31 and an upper cross rod 32, the first end of the upper cross rod 31 is hinged to the first end of the upper cross rod 32, the second end of the upper cross rod 31 is hinged to the left vertical rod 1, and the second end of the upper cross rod 32 is hinged to the right vertical rod 2.

The bottom end rail 4 includes horizontal first pole 41 and horizontal second pole 42 down, the first end of horizontal first pole 41 is articulated mutually with the first end of horizontal second pole 42 down, the second end of horizontal first pole 41 with left side montant 1 is articulated mutually, the second end of horizontal second pole 42 down with right side montant 2 is articulated mutually. The second end of the lower transverse first rod 41 is hinged to the left vertical rod 1 through a left lower hinge mechanism 9, and the second end of the lower transverse second rod 42 is hinged to the right vertical rod 2 through a right lower hinge mechanism 10; the left lower hinge mechanism 9 comprises a left lower hinge base, one end of the left lower hinge base is fixedly connected with the lower end of the left vertical rod 1, and the other end of the left lower hinge base is hinged with the lower transverse rod 41; the right lower hinge mechanism 10 comprises a right lower hinge base, one end of the right lower hinge base is fixedly connected with the lower end of the right vertical rod 2, and the other end of the right lower hinge base is hinged with the lower transverse two rods 42.

Further, the first end of the upper horizontal rod 31 is hinged to the first end of the upper horizontal rod 32 through an upper middle hinge mechanism 5, the upper middle hinge mechanism 5 includes a first hinge joint 51 and a second hinge joint 52, one end of the first hinge joint 51 is hinged to the upper horizontal rod 31, the other end of the second hinge joint 52 is connected to the upper horizontal rod 32, and a locking slot 511 extending along the length direction of the upper horizontal rod 31 is formed in the first hinge joint 51.

The middle-upper hinge mechanism 5 further comprises a top-unfolding locking mechanism 53 for locking the first hinge joint 51 and the second hinge joint 52 to enable the upper horizontal rod 31 and the upper horizontal rod 32 to be in an unfolded state, the top-unfolding locking mechanism 53 comprises a first locking block 531 and a locking protrusion 532 arranged on the first locking block 531, one end of the first locking block 531 extends into the second hinge joint 52 along the direction of the upper horizontal rod 32, the other end of the first locking block 531 elastically extends out of the second hinge joint 52 and is opposite to the upper horizontal rod 31, and the locking protrusion 532 extends into the locking groove 511 and can slide along the locking groove 511. Wherein the content of the first and second substances,

the locking protrusion 532 may extend into the locking groove 511 to limit the rotation between the first joint 51 and the second joint 52. In addition, a first elastic reset piece is arranged between the first lock block 531 and the upper horizontal second rod 32, and is used for pushing the first lock block 531 into the second hinge joint 52.

The locking protrusion 532 exits the locking slot 511 by pressing the end of the first locking piece 531 opposite to the upper horizontal rod 31, and the upper unfolding locking mechanism 53 is unlocked, so that the first joint 51 can rotate relative to the second joint 52.

Further, the first end of the lower cross first rod 41 and the first end of the lower cross second rod 42 are hinged by a middle lower hinge mechanism 8, and the middle lower hinge mechanism 8 includes: a hinge joint connecting block 81, a third hinge joint 82, a fourth hinge joint 83 and a lower unfolding locking mechanism 84.

One end of the hinge joint connecting block 81 is hinged to a third hinge joint 82, the other end of the hinge joint connecting block is hinged to a fourth hinge joint 83, a first slideway 821 penetrates through the third hinge joint 82, and a second slideway 831 corresponding to the first slideway 821 penetrates through the fourth hinge joint 83.

The lower unfolding locking mechanism 84 is used for locking the third hinge joint 82 and the fourth hinge joint 83 so as to enable the lower cross rod 41 and the lower cross rod 42 to be in an unfolded state, the lower unfolding locking mechanism 84 includes a first top member 841 slidably disposed in the first slideway 821 and a second top member 842 slidably disposed in the second slideway 831, and the second top member 842 can extend into the first slideway 821 so as to lock the third hinge joint 82 and the fourth hinge joint 83. A second elastic reset piece for pushing the first top piece 841 to one end far away from the second top piece 842 is arranged between the first top piece 841 and the lower transverse first rod 41, and a third elastic reset piece for pushing the second top piece 842 into the first slideway 821 is arranged between the second top piece 842 and the lower transverse second rod 42. In this embodiment, the first elastic restoring member, the second elastic restoring member and the third elastic restoring member are all springs.

Pressing the first top member 841 causes the second top member 842 to exit the first slideway 821, and the lower unfolding locking mechanism 84 is unlocked, so that both the third hinge joint 82 and the fourth hinge joint 83 can rotate relative to the hinge joint block 81.

In order to make the overall structure more compact after folding, the middle and lower hinge mechanisms 8 in this embodiment do not directly hinge the ends of the lower horizontal rod 41 and the lower horizontal rod 42, but indirectly hinge the lower horizontal rod through the hinge joint connecting block 81, and it should be noted that there is another implementation manner that the middle and lower hinge mechanisms 5 and 8 both adopt such indirect hinge manner, which can also achieve the effect of being more compact after folding.

The embodiment realizes extension and retraction by the following scheme that the upper transverse bar 31 comprises a left upper transverse bar 311 and a middle upper transverse bar 312, and the left upper transverse bar 311 is telescopically nested in the middle upper transverse bar 312; the lower cross bar 41 includes a left lower cross bar 411 and a left middle cross bar 412, the left lower cross bar 411 being telescopically nested within the left middle cross bar 412. In order to lock the extension state of the upper left cross bar 311 and the upper middle cross bar 312, the upper middle cross bar 312 is provided with a telescopic lock hole, the upper left cross bar 311 is provided with an elastic telescopic lock protrusion 3110 protruding along the radial direction, when the upper left cross bar 311 extends to the longest, the elastic telescopic lock protrusion 3110 extends into the telescopic lock hole under the action of elasticity, so that the extension state is locked, and the extension state can be realized only by ejecting the elastic telescopic lock protrusion 3110 out of the telescopic lock hole during the contraction.

Furthermore, the second end of the upper horizontal rod 31 is hinged to the left vertical rod 1 through an upper left hinge mechanism 6, and the second end of the upper horizontal rod 32 is hinged to the right vertical rod 2 through an upper right hinge mechanism 7.

Last hinge mechanism 6 on a left side is located left montant 1 and can be followed upper and lower gliding upper left slide 61 of left montant 1 including the cover, be equipped with left side hole 611 of locking on the upper left slide 61, the upper end of left side montant 1 is equipped with and stretches into in the hole 611 of locking on a left side in order to lock the upper left elastic bulge 62 of upper left slide 61, still be equipped with in the hole 611 of locking on a left side and be used for the roof pressure the upper left elastic bulge 62 is so that upper left slide button 63 on a left side can be followed to upper left slide 61 from top to bottom left montant 1.

The upper right hinge mechanism 7 includes an upper right sliding seat 71 which is sleeved on the right vertical rod 2 and can slide up and down along the right vertical rod 2. Be equipped with upper right locking hole 711 on the upper right sliding seat 71, the upper end of right montant 2 is equipped with and stretches into in the upper right locking hole 711 in order to lock the upper right elastic bulge 72 of upper right sliding seat 71, still be equipped with in the upper right locking hole 711 and be used for the roof pressure the upper right elastic bulge 72 so that upper right sliding seat 71 can follow the upper right button 73 of gliding about right montant 2.

The upper left hinge mechanism 6 and the upper right hinge mechanism 7 can slide to the bottom when being folded through the hinge structures, so that the occupation of the upper transverse rod 3 in the folded space is effectively reduced, and the storage and the carrying are further facilitated.

Preferably, the upper cross rod 3 and the lower cross rod 4 are in a staggered design, namely, the folding plane of the lower cross rod 4 is staggered with the upper cross rod 3, so that the folded upper cross rod 3 can slide to a lower position, the folding structure is more compact, and the overall occupied volume is further reduced.

This embodiment still provides a bed guardrail and crib, the bed guardrail include as above bed guardrail frame, left side montant 1, right montant 2, go up horizontal pole 3 and bottom end rail 4 enclose to establish and be equipped with the flexibility between the frame of formation and enclose cloth. The crib comprises a crib body and the crib guardrail, wherein the crib guardrail is arranged on one side of the crib body. Wherein, the lower ends of the left vertical rod 1 and the right vertical rod 2 of the bed guardrail are respectively provided with a pin 120 which extends in the length direction vertical to the left vertical rod and the right vertical rod and is arranged on the bed body.

The folding process of this embodiment is: shrink earlier in upper left horizontal pole 311 contracts to middle horizontal pole 312 in, left horizontal pole 411 contracts to middle left horizontal pole 412 in, left montant 1 and right montant 2 are close to partly relatively this moment, at this moment, the locking mechanical system 53 is opened in the unblock and the locking mechanical system 84 is opened in the lower exhibition, make and go up horizontal pole 31 and go up horizontal two poles 32 swing folding, lower horizontal pole 41 and lower horizontal two poles 42 swing folding, then will fold last horizontal pole 31 and last horizontal two poles 32 after-along left montant 1 and the landing of right montant 2, can accomplish to close. In the same way, the bed guardrail can be unfolded by reverse operation.

Example 2

In embodiment 2, this embodiment is basically the same as embodiment 1, and for the sake of convenience, only the difference in the main structure from embodiment 1 will be described. The parts not described in this example are the same as example 1, except that: the telescopic structure and the folding structure of this embodiment are linkage structures, be equipped with on the entablature 3 and be used for launching locking mechanical system 53 on the entablature 3 locking at the expansion state, be equipped with on the sheer pole 4 and be used for launching locking mechanism 84 with the lower exhibition of sheer pole 4 locking at the expansion state, the entablature 3 triggers when contracting to first preset position launch locking mechanical system 53 unblock in order to realize folding, the sheer pole 4 triggers when contracting to the second preset position lower exhibition unlocking locking mechanical system 84 unblock in order to realize folding.

Accordingly, when the upper left cross bar 311 contracts to press the first locking piece 531, the upper unfolding locking mechanism 53 is triggered to unlock. When the left lower cross bar 411 contracts to press against the first top member 841, the lower unfolding locking mechanism 84 is triggered to unlock.

The bed guardrail frame in this embodiment, through flexible action linkage unblock folding function, the operation is more ingenious to can reach the effect that occupation space is littleer after the receipts are closed equally.

Example 3

In embodiment 3, this embodiment is basically the same as

embodiment

1 or 2, and for the sake of convenience of description, only the difference in the main structure from

embodiment

1 or 2 will be described. The parts not described in this example are the same as those in example 1 or 2, except that: the upper cross bar 3 and the lower cross bar 4 in the embodiment have no telescopic structure of the upper cross bar 31 and the lower cross bar 41, and both the upper cross bar 3 and the lower cross bar 4 have only folding structures. The following is further explained: this embodiment provides a foldable bed guardrail frame, and it is including relative left montant 1 and the right montant 2 that sets up, be equipped with folding horizontal pole 3 and sheer pole 4 between left side montant 1 and the right montant 2, it is folding during horizontal pole 3 and sheer pole 4 left side montant 1 and right montant 2 are close to relatively and receive receipts.

The bed guardrail frame of the embodiment has small volume after being folded, occupies smaller space, is simpler to operate, is convenient to store and carry, and is particularly suitable for the structure that the upper transverse rod 31 and the lower transverse rod 41 respectively only have two sections of folding rods with similar lengths.

In summary, the present application has, but is not limited to, the following beneficial effects:

1. the application provides a bed guardrail frame to and use this bed guardrail frame's bed guardrail and crib, bed guardrail frame wherein can reach the effect that occupation space is littleer through shrink or folding, and the operation is simpler, is convenient for accomodate and carry.

2. The upper left hinge mechanism 6 and the upper right hinge mechanism 7 can slide to the bottom while being folded through the hinge structures, so that the occupation of the upper transverse rod 3 in the folded space is effectively reduced, and the folding structure is further more compact.

3. This application can also be through flexible action linkage unblock folding function, operates more ingeniously to can reach the effect that occupation space is littleer after closing equally.

It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, and these terms are only used to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application. Furthermore, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing is illustrative of one or more embodiments provided in connection with the detailed description and is not intended to limit the disclosure to the particular forms disclosed. Similar or identical methods, structures, etc. as used herein, or several technical inferences or substitutions made on the concept of the present application should be considered as the scope of the present application.

Claims

1. Folding bed guardrail frame, its characterized in that, including relative left montant (1) and right montant (2) that sets up, be equipped with folding entablature (3) and sheer pole (4) between left side montant (1) and right montant (2), it is folding during entablature (3) and sheer pole (4) left side montant (1) and right montant (2) are close to relatively and receive the receipts.

2. A folding bed guardrail frame according to claim 1, characterized in that the upper cross bar (3) comprises an upper cross bar (31) and an upper cross bar (32), the first end of the upper cross bar (31) is hinged with the first end of the upper cross bar (32), the second end of the upper cross bar (31) is hinged with the left vertical bar (1), and the second end of the upper cross bar (32) is hinged with the right vertical bar (2);

the lower cross rod (4) comprises a lower transverse first rod (41) and a lower transverse second rod (42), the first end of the lower transverse first rod (41) is hinged to the first end of the lower transverse second rod (42), the second end of the lower transverse first rod (41) is hinged to the left vertical rod (1), and the second end of the lower transverse second rod (42) is hinged to the right vertical rod (2).

3. A folding bed fence frame as in claim 2, characterized in that the first end of the upper horizontal bar (31) is hinged with the first end of the upper horizontal bar (32) by an upper middle hinge mechanism (5), the upper middle hinge mechanism (5) comprises a first hinge joint (51) and a second hinge joint (52) with one end hinged, the other end of the first hinge joint (51) is connected with the upper horizontal bar (31), the other end of the second hinge joint (52) is connected with the upper horizontal bar (32), the first hinge joint (51) is provided with a lock slot (511) extending along the length direction of the upper horizontal bar (31);

the middle-upper hinge mechanism (5) further comprises an upper unfolding locking mechanism (53) used for locking the first hinge head (51) and the second hinge head (52) to enable the upper transverse first rod (31) and the upper transverse second rod (32) to be in an unfolded state, the upper unfolding locking mechanism (53) comprises a first locking block (531) and a locking protrusion (532) arranged on the first locking block (531), one end of the first locking block (531) extends into the second hinge head (52) along the direction of the upper transverse second rod (32), the other end of the first locking block elastically extends out of the second hinge head (52) and is opposite to the upper transverse first rod (31), and the locking protrusion (532) extends into the locking groove (511) and can slide along the locking groove (511);

the end, opposite to the upper transverse rod (31), of the first locking block (531) is pressed, the locking protrusion (532) exits the locking groove (511), and the upper unfolding locking mechanism (53) is unlocked, so that the first hinge joint (51) can rotate relative to the second hinge joint (52).

4. A folding bed guardrail frame according to claim 2, characterized in that the first end of the lower cross bar (41) and the first end of the lower cross bar (42) are hinged by a middle and lower hinge mechanism (8), the middle and lower hinge mechanism (8) comprising: the hinge joint locking mechanism comprises a hinge joint connecting block (81), a third hinge joint (82), a fourth hinge joint (83) and a lower unfolding locking mechanism (84);

one end of the hinge joint connecting block (81) is hinged with a third hinge joint (82), the other end of the hinge joint connecting block is hinged with a fourth hinge joint (83), a first slideway (821) penetrates through the third hinge joint (82), and a second slideway (831) corresponding to the first slideway (821) penetrates through the fourth hinge joint (83);

the lower unfolding locking mechanism (84) is used for locking the third hinged joint (82) and the fourth hinged joint (83) so as to enable the lower cross rod (41) and the lower cross rod (42) to be in an unfolded state, the lower unfolding locking mechanism (84) comprises a first top piece (841) arranged in a first slide way (821) in a sliding mode and a second top piece (842) arranged in a second slide way (831) in a sliding mode, and the second top piece (842) can extend into the first slide way (821) so as to lock the third hinged joint (82) and the fourth hinged joint (83);

and (3) pressing the first top piece (841) to enable the second top piece (842) to exit from the first slideway (821), and unlocking the lower unfolding locking mechanism (84) so as to enable the third hinged joint (82) and the fourth hinged joint (83) to rotate relative to the hinged joint connecting block (81).

5. A folding bed guardrail frame according to claim 2, characterized in that the second end of the upper transverse bar (31) is hinged with the left vertical bar (1) through a left upper hinge mechanism (6), and the second end of the upper transverse bar (32) is hinged with the right vertical bar (2) through a right upper hinge mechanism (7);

the left upper hinge mechanism (6) comprises an upper left sliding seat (61) which is sleeved on the left vertical rod (1) and can slide up and down along the left vertical rod (1), an upper left locking hole (611) is formed in the upper left sliding seat (61), an upper left elastic bulge (62) which can extend into the upper left locking hole (611) to lock the upper left sliding seat (61) is arranged at the upper end of the left vertical rod (1), and an upper left button (63) which is used for jacking the upper left elastic bulge (62) to enable the upper left sliding seat (61) to slide up and down along the left vertical rod (1) is further arranged in the upper left locking hole (611);

the upper right hinge mechanism (7) comprises an upper right sliding seat (71) which is sleeved on the right vertical rod (2) and can slide up and down along the right vertical rod (2).

6. A folding bed guardrail frame as claimed in claim 5, characterized in that the upper right sliding seat (71) is provided with an upper right locking hole (711), the upper end of the right vertical bar (2) is provided with an upper right elastic bulge (72) which can extend into the upper right locking hole (711) to lock the upper right sliding seat (71), and the upper right locking hole (711) is further provided with an upper right button (73) which is used for pressing the upper right elastic bulge (72) to enable the upper right sliding seat (71) to slide up and down along the right vertical bar (2).

7. A folding bed guardrail frame according to claim 2, characterized in that the second end of the lower cross bar (41) is hinged to the left vertical bar (1) by a left lower hinge (9), and the second end of the lower cross bar (42) is hinged to the right vertical bar (2) by a right lower hinge (10);

the left lower hinge mechanism (9) comprises a left lower hinge seat (91), one end of the left lower hinge seat (91) is fixedly connected to the lower end of the left vertical rod (1), and the other end of the left lower hinge seat is hinged to the lower transverse rod (41);

articulated mechanism (10) includes articulated seat (101) under the right side down, articulated seat (101) one end link firmly in right side montant (2) lower extreme, the other end with two horizontal poles (42) are articulated mutually down.

8. A folding bed guardrail frame according to claim 1, characterized in that the lower ends of the left vertical bar (1) and the right vertical bar (2) are respectively provided with a pin (120) extending perpendicular to the length direction of the two.

9. Bed guardrail, characterized in that it comprises a bed guardrail frame according to any of the claims 1-8, wherein a flexible enclosure is arranged between the frames formed by the enclosing of the left vertical bar (1), the right vertical bar (2), the upper cross bar (3) and the lower cross bar (4).

10. A crib comprising a bed body, further comprising a bed guard as claimed in claim 9, said bed guard being provided on one side of said bed body.