BED FRAME OF IRON FRAME BED

Abstract

A bed frame of an iron frame bed comprises two transverse rods, two longitudinal rods, four upright columns, and a plurality of frame rods. The two longitudinal rods and the two transverse rods form a rectangular frame, and a length of each of the two transverse rods is greater than a length of each of the two longitudinal rods. The iron frame bed further comprises two or three longitudinal beams connected to the two transverse rods, and the two or three longitudinal beams divide the rectangular frame into three or four individual cells. The plurality of frame rods are arranged transversely, and a length of each of the plurality of frame rods is shorter than a length of each of the two or three longitudinal beams. The plurality of frame rods are connected to the two longitudinal rods or the two longitudinal beams.

Description

FIELD OF THE DISCLOSURE

The present disclosure relates to a bed frame and in particular to a bed frame of an iron frame bed.

BACKGROUND OF THE DISCLOSURE

A bed frame of an iron frame bed comprises a rectangular metal frame, a plurality of supporting rods, and a plurality of metal frame rods. The rectangular metal frame is surrounded and defined by two transverse rods symmetrically parallel to each other and two longitudinal rods symmetrically parallel to each other. The plurality of supporting rods are disposed on all sides of the rectangular metal frame for supporting the rectangular metal frame. The two transverse rods correspond to a direction of people laying down when sleeping. The two longitudinal rods correspond to a width direction of the bed frame, so a length of each of the two transverse rods is greater than a length of each of the two longitudinal rods. The plurality of metal frame rods are connected to the two transverse rods, so the plurality of metal frame rods are arranged longitudinally and spaced apart from one another.

Since each of the plurality of metal frame rods is much thinner than each of two transverse rods or each of the two longitudinal rods, strength and hardness of the plurality of metal frame rods are weak, and bending deformation is more likely to occur. In other words, the plurality of metal frame rods can be broken apart with a relatively small lateral force. In fact, there is a special detection method, which is to insert a cone block from top to bottom between two adjacent metal frame rods of the plurality of metal frame rods and then apply a fixed downward test force. If the cone block can be forced through the two adjacent metal frame rods, the strength of the bed frame does not meet the design requirements. Therefore, in order to meet the design test requirements, the existing structural design adds connecting pieces at a middle position of each of the plurality of metal frame rods. That is, the middle positions of the two adjacent metal frame rods are connected by the connecting pieces, and finally all of the plurality of metal frame rods are interwoven through the connecting pieces, so that the connecting pieces can limit the lateral deformation of each of the plurality of metal frame rods. Alternatively, some people believe that directly thickening each of the plurality of metal frame rods or reducing a gap of the two adjacent metal frame rods can improve deformation ability of each of the plurality of metal frame rods. However, profit is very limited for the iron frame bed, so thickening each of the plurality of metal frame rods or increasing a quantity of the plurality of metal frame rods will increase the weight of the product and increase the production cost. Control of the production cost will directly determine the competitiveness of the product, so no manufacturer will probably directly thicken each of the plurality of metal frame rods and increase the number of metal frame rods.

In this regard, those skilled in the art are still continuously thinking about how to obtain a better structural design and further improve the strength of the bed frame on the premise of ensuring product competitiveness.

BRIEF SUMMARY OF THE DISCLOSURE

The technical problem to be solved by the present disclosure is to provide a bed frame of an iron frame bed, which improves the strength without increasing the production cost. In order to solve the above technical problems, the present disclosure provides the following technical solution.

A bed frame of an iron frame bed comprises two transverse rods symmetrically parallel to each other in a front-and-rear direction, two longitudinal rods symmetrically parallel to each other in a left-and-right direction, two or three longitudinal beams connected to the two transverse rods, four upright columns arranged vertically, and a plurality of frame rods. The two longitudinal rods and the two transverse rods form a rectangular frame, and the four upright columns are respectively connected to four corners of the rectangular frame. A length of each of the two transverse rods is greater than a length of each of the two longitudinal rods, and the two or three longitudinal beams divide the rectangular frame into three or four individual cells. The plurality of frame rods are evenly disposed in the three or four individual cells, and the plurality of frame rods are arranged transversely. A length of each of the plurality of frame rods is shorter than a length of each of the two or three longitudinal beams, and each end of each of the plurality of frame rods is connected to one of the two longitudinal rods or one of the two or three longitudinal beams.

Each of the plurality of frame rods is arranged transversely and connected to one of the two longitudinal rods and one of the two or three longitudinal beams, or between the two or three longitudinal beams. The length of each of the plurality of frame rods is shorter than a distance between the two transverse rods, and the resistance to deformation is greatly improved, so a distance between two adjacent frame rods of the plurality of frame rods can be larger than the existing structure and a length of all of the plurality of frame rods transversely arranged is much shorter than a length of a plurality of frame rods longitudinally arranged in the existing structure. The material saved from the plurality of frame rods is enough to offset the two or three longitudinal beams, so an overall weight of the bed frame is not increased. The bed frame can even be lighter than before, and the strength is improved. In addition, there is no need to provide additional connecting pieces between the two adjacent frame rods, which further save costs.

In a preferred embodiment, an inner side of each of the two transverse rods is disposed with one or more U-shaped seats, and each end of each of the two or three longitudinal beams is supported on the one or more U-shaped seats. Each end of each of the two or three longitudinal beams and the one or more U-shaped seats are detachably buckled to each other, and the two or three longitudinal beams are configured to pull the two transverse rods in a longitudinal direction. The one or more U-shaped seats are assembled with the two or three longitudinal beams, and the one or more U-shaped seats can support the two or three longitudinal beams stably and prevent the two or three longitudinal beams from shaking. Additionally, the two or three longitudinal beams and the two transverse rods form an H-shaped reinforcing supporting structure, increasing strength and stability of the bed frame.

In a preferred embodiment, a left inner side and a right inner side of the one or more U-shaped seats respectively comprises a protruding tongue, and a left side and a right side of each end of each of the two or three longitudinal beams respectively comprises a buckle hole. The protruding tongue is inserted into the buckle hole, and a bottom surface of the one or more U-shaped seats comprises a position-limiting block. A bottom surface of each end of each of the two or three longitudinal beams comprises a position-limiting hole, and the position-limiting block is inserted into the position-limiting hole. The mating connection between the protruding tongue and the buckle hole can prevent the two or three longitudinal beams from being disengaged upwards, and the assembly is stable. The mating connection between the position-limiting block and the position-limiting hole enables the two or three longitudinal beams to be fixedly connected to the two transverse rods, so as to ensure a constant distance between the two transverse rods and improve the overall stability of the bed frame.

In a preferred embodiment, each end of each of the plurality of frame rods is flattened and folded down vertically to form a vertical hook, and each of the two longitudinal rods and each of the two or three longitudinal beams comprise insertion holes. Each of the insertion holes is disposed with a plastic buckle, and the vertical hook is inserted into the plastic buckle of a corresponding one of the insertion holes. An anti-releasing structure is disposed between the vertical hook and the plastic buckle. The plurality of frame rods are directly flattened to form a vertical hook, which is inserted into the plastic buckle, making it very convenient to assemble the plurality of frame rods.

In a preferred embodiment, the bed frame of the iron frame bed comprises two supporting rods and a connecting rod configured to be connected to the two supporting rods. The two supporting rods are connected to the two transverse rods in a one-to-one correspondence, and each of the two supporting rods is located below a middle position of a corresponding one of the two transverse rods. The connecting rod is configured to be connected to the two supporting rods and pull the two supporting rods in a longitudinal direction, and two ends of the connecting rod are detachably connected to the two supporting rods. The two supporting rods improve a supporting capacity of the two transverse rods. The two supporting rods on the two transverse rods are connected by the connecting rod, a distance between the two supporting rods remains fixed, and the two supporting rods and the connecting rod form an H-shaped bracket structure, which improves stability of the two supporting rods and makes the two supporting rods have good resistance to deformation and impact.

In a preferred embodiment, each of the two transverse rods is configured to be folded in half and comprises two transverse rod units, so that each of the two transverse rods is configured to be folded in half using a corresponding one of the two supporting rods as a center line. End surfaces of the connecting rod comprise U-shaped channel steels corresponding to the two supporting rods, and the U-shaped channel steels are buckled to the two supporting rods. One or more tongue pieces protrude from a bottom surface of each of the U-shaped channel steels, and each of the two supporting rods comprises one or more buckle openings. The one or more tongue pieces are inserted into the one or more buckle openings. The transverse rods can be folded, making packaging and transportation more convenient. The U-shaped channel steels on the end surfaces of the connecting rod can be more easily buckled to the two supporting rods, making assembly more convenient and the structure more secure.

In a preferred embodiment, a top end of each of the two supporting rods is disposed with a connecting seat, and inner ends of the two transverse rod units are pivotally connected to the connecting seat. The connecting seat comprises a seat plate and two side plates, and the seat plate is connected to a top surface of a corresponding one of the two supporting rods. The two side plates are symmetrically connected to two sides of the seat plate, and a part of the two side plates extending out of the seat plate is pivotally connected to the two transverse rod units. When the two transverse rods are folded, a corresponding one of the two supporting rods is disposed between the two transverse rod units. A length of the two side plates is longer than a length of the seat plate, and the part of the two side plates extending out of the seat plate is pivotally connected with the two transverse rod units. This structure can better enable the two transverse rod units to be folded using the corresponding one of the two supporting rods as the center line and make the two transverse rods neater after being folded.

In a preferred embodiment, each of the four upright columns comprises an upper column and a lower column, and the upper column and the lower column are configured to be inserted into each other in an upper-and-down direction. A top end of the lower column has a portion having a diameter that is smaller than a remaining portion to form a joint, and the upper column is sleeved on the joint. End portions of the two longitudinal rods are fixedly connected to the lower columns of the four upright columns, and each of outer ends of the two transverse rod units is disposed with a locking plate. The locking plate abuts an outer surface of the upper column and an outer surface of the lower column, and a first part of the locking plate extending above a top surface of a corresponding one of the two transverse rods is locked by an upper bolt. The upper bolt enables the locking plate, the upper column, and the joint to be locked together, and a second part of the locking plate extending below a bottom surface of the corresponding one of the two transverse rods is locked by a lower bolt. The lower bolt enables the locking plate and the lower column to be locked together. The upper and lower bolts firmly lock the upper column, lower column, and one of the two transverse rods together, forming a sturdy T-shaped structure that does not wobble and requires fewer bolts. Additionally, after the upper and lower columns are inserted together and the locking plate abuts the upper column and the lower column, the bolts can be fastened easily, making it very convenient for consumers to assemble.

In a preferred embodiment, the upper column is further locked by a reinforcing bolt, and the reinforcing bolt enables the upper column and the joint to be locked together. The reinforcing bolt is located above the upper bolt, and the lower column is disposed with rivet nuts corresponding to the upper bolt, the lower bolt, and the reinforcing bolt.

In a preferred embodiment, the locking plate is arc-shaped to correspond to the outer surface of the upper column and the outer surface of the lower column. A left edge and a right edge of the locking plate are folded toward a corresponding one of the two transverse rods, and the plurality of frame rods are ten frame rods arranged within the three or four individual cells. The folded edges enhance strength of the locking plate and facilitate the connection and installation of the locking plate and the two transverse rods.

BRIEF DESCRIPTION OF THE DRAWINGS

The present disclosure will be further described below in conjunction with the accompanying drawings and embodiments.

FIG. 1 illustrates a perspective view of a bed frame of an iron frame bed when a connecting rod is not assembled.

FIG. 2 illustrates a perspective view of the bed frame shown in FIG. 1 when a plurality of frame rods are omitted.

FIG. 3 illustrates an exploded view of the bed frame shown in FIG. 2 when the plurality of frame rods are omitted.

FIG. 4 illustrates an enlarged view of a portion of a transverse rod of the bed frame.

FIG. 5 illustrates an enlarged view of a portion of a longitudinal beam of the bed frame.

FIG. 6 illustrates an enlarged view of the portion of the longitudinal beam connected to a U-shaped seat.

FIG. 7 illustrates a perspective view of the bed frame when the plurality of frame rods are assembled.

FIG. 8 illustrates a top view of a portion of the bed frame.

FIG. 9 illustrates an enlarged view of a circled area in FIG. 8.

FIG. 10 illustrates an enlarged exploded view of a portion of the longitudinal beam and the plurality of frame rods.

FIG. 11 illustrates an enlarged view of a portion of the connecting rod.

FIG. 12 illustrates a partial enlarged view of a portion of a supporting rod.

FIG. 13 illustrates a perspective view of the transverse rod in a folded state.

FIG. 14 illustrates an enlarged exploded view of an upright column, the transverse rod, and a longitudinal rod.

FIG. 15 illustrates a side view of an upright column, the transverse rod, and a longitudinal rod in an assembled state.

FIG. 16 illustrates a perspective view of a deformed structure of the bed frame.

DETAILED DESCRIPTION OF THE EMBODIMENTS

In the description of the present disclosure, it should be noted that the terms “front”, “rear”, “left”, “right”, “length direction”, “width direction”, etc. indicate the orientation or positional relationship based on the orientation shown in the drawings. The positional relationship is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the referenced device or element must have a specific orientation, be constructed, and be operated in a specific orientation. Therefore, the positional relationship should not be understood as a limitation of the present disclosure. For those of ordinary skill in the art, the specific meaning of the above terms in the present disclosure can be understood under specific conditions.

Referring to FIGS. 1 to 5, a bed frame of an iron frame bed comprises two transverse rods 10 symmetrically parallel to each other in a front-and-rear direction, two longitudinal rods 20 symmetrically parallel to each other in a left-and-right direction, four upright columns 30 arranged vertically, and a plurality of frame rods 40. The two longitudinal rods 20 and the two transverse rods 10 form a rectangular frame, and the four upright columns 30 are respectively connected to four corners of the rectangular frame. A length of each of the two transverse rods 10 is greater than a length of each of the two longitudinal rods 20. That is, the two transverse rods 10 correspond to a length direction of the iron frame bed, and the two longitudinal rods 20 correspond to a width direction of the iron frame bed. The iron frame bed further comprises two longitudinal beams 50 (or three longitudinal beams 50) connected to the two transverse rods 10, and the two longitudinal beams 50 divide the rectangular frame into three individual cells having equal areas (or, the three longitudinal beams 50 divide the rectangular frame into four individual cells). The plurality of frame rods 40 are evenly disposed in the three individual cells. The plurality of frame rods 40 are arranged transversely. A length of each of the plurality of frame rods 40 is shorter than a length of each of the two longitudinal beams 50 (or, the two longitudinal rods 20), and each end of each of the plurality of frame rods 40 is connected to one of the two longitudinal rods 20 or one of the two longitudinal beams 50. That is, some of the plurality of frame rods 40 located on a middle cell of the three individual cells are connected to the two longitudinal beams 50, and the others of the plurality of frame rods 40 located on a left cell and a right cell of the three individual cells are connected to one of the two longitudinal rods 20 and one of the two longitudinal beams 50. Understandably, in a preferred embodiment, the rectangular frame can be divided by the two longitudinal beams 50 into a plurality of individual cells with equal areas. As a simple replacement, the rectangular frame can be divided by the two longitudinal beams 50 into a plurality of individual cells with unequal areas.

The two longitudinal beams 50 between the two transverse rods 10 not only improve strength of the rectangular frame, but also enable the plurality of frame rods 40 to be disposed transversely, so that the length of each of the plurality of frame rods 40 is shorter, deformation resistance is greatly improved, and transverse strength of the bed frame can be improved. Thereby, compared with a structure of an existing bed frame, an overall number of the plurality of frame rods 40 is reduced. A total amount of material of the plurality of frame rods 40 reduced by reducing the overall number of the plurality of frame rods 40 is enough to offset the two longitudinal beams 50, which improves the stability of the bed frame without increasing an overall weight of the bed frame.

Preferably, an inner side of each of the two transverse rods 10 is disposed with one or more U-shaped seats 12, and each end of each of the two longitudinal beams 50 is supported on the one or more U-shaped seats 12. Each end of each of the two longitudinal beams 50 and the one or more U-shaped seats 12 are detachably buckled to each other. The two longitudinal beams 50 are configured to pull the two transverse rods 10 in a longitudinal direction.

Preferably, referring to FIGS. 4 to 6, a left inner side and a right inner side of the one or more U-shaped seats 12 respectively comprises a protruding tongue 122, and a left side and a right side of each end of each of the two longitudinal beams 50 respectively comprises a buckle hole 52. The protruding tongue 122 is inserted into the buckle hole 52. Further preferably, a bottom surface of the one or more U-shaped seats 12 comprises a position-limiting block 124, and a bottom surface of each end of each of the two longitudinal beams 50 comprises a position-limiting hole 54. The position-limiting block 124 is inserted into the position-limiting hole 54.

Preferably, as shown in FIGS. 7-10, each end of each of the plurality of frame rods 40 is flattened and folded down vertically to form a vertical hook 42, and each of the two longitudinal rods 20 and each of the two longitudinal beams 50 comprise insertion holes. Each of the insertion holes is disposed with a plastic buckle 60. The vertical hook 42 is inserted into the plastic buckle 60 of a corresponding one of the insertion holes. Further preferably, an anti-releasing structure 61 is disposed between the vertical hook 42 and the plastic buckle 60. Therefore, after the vertical hook 42 is inserted into the plastic buckle 60 from top to bottom, the plurality of frame rods 40 can be prevented from being easily removed, which ensures stable installation of the plurality of frame rods 40.

Preferably, referring to FIGS. 2 and 3, two supporting rods 70 and a connecting rod 80 configured to be connected to the two supporting rods 70 are provided. The two supporting rods 70 are connected to the two transverse rods 10 in a one-to-one correspondence, and each of the two supporting rods 70 is located below a middle position of a corresponding one of the two transverse rods 10. The connecting rod 80 is configured to be connected to the two supporting rods 70 and pull the two supporting rods 70 in the longitudinal direction. Two ends of the connecting rod 80 are detachably connected to the two supporting rods 70. The two supporting rods 70 are pulled by the connecting rod 80, so that a distance between the two supporting rods 70 is maintained, preventing the two supporting rods 70 from being easily kicked and tilted. Additionally, the two supporting rods 70 and the connecting rod 80 form a first H-shaped supporting structure. As previously mentioned, the two transverse rods 10 and the two longitudinal beams 50 also form a second H-shaped supporting structure. Thus, the two transverse rods 10 form the second H-shaped supporting structure on a bed surface through the two longitudinal beams 50, and the two supporting rods 70 and the connecting rod 80 form the first H-shaped supporting structure below the bed surface, significantly enhancing stability of the transverse rods 10 in terms of the three-dimensional structure.

Preferably, referring to FIG. 13, each of the two transverse rods 10 is configured to be folded in half and comprises two transverse rod units 10-1, allowing each of the two transverse rods 10 to be folded in half using a corresponding one of the two supporting rods 70 as a center line.

Preferably, referring to FIGS. 11 and 12, end surfaces of the connecting rod 80 comprise U-shaped channel steels 82 corresponding to the two supporting rods 70, and the U-shaped channel steels 31 are buckled to the two supporting rods 70. One or more tongue pieces 84 protrude from a bottom surface of each of the U-shaped channel steels 82, and each of the two supporting rods 70 comprises one or more buckle openings 72. The one or more tongue pieces 84 are inserted into the one or more buckle openings 72.

Preferably, referring to FIG. 13, a top end of each of the two supporting rods 70 is disposed with a connecting seat 74, and inner ends (i.e., adjacent sides) of the two transverse rod units 10-1 are pivotally connected to the connecting seat 74. Specifically, the connecting seat 74 comprises a seat plate 742 and two side plates 744. The seat plate 742 is connected to a top surface of a corresponding one of the two supporting rods 70. The two side plates 744 are symmetrically connected to two sides of the seat plate 742. A part of the two side plates 744 extending out of the seat plate 742 is pivotally connected to the two transverse rod units 10-1. When the two transverse rod units 11 are folded, a corresponding one of the two supporting rods 70 is disposed between the two transverse rod units 10-1.

Preferably, referring to FIG. 14, each of the four upright columns 30 comprises an upper column 32 and a lower column 34, and the upper column 32 and the lower column 34 can be inserted into each other in an upper-and-down direction. A top end of the lower column 34 is reduced in diameter to form a joint 342, and the upper column 32 is sleeved on the joint 342. End portions of the two longitudinal rods 20 are fixedly connected to the lower columns 34 of the four upright columns 30, for example, by welding. Each of outer ends of the transverse rod units 10-1 is disposed with a locking plate 14, and the locking plate 14 abuts an outer surface of the upper column 32 and an outer surface of the lower column 34. A part of the locking plate 14 extending above a top surface of a corresponding one of the two transverse rods 10 is locked by an upper bolt 36, and the upper bolt 36 enables the locking plate 14, the upper column 32, and the joint 342 to be locked together. A part of the locking plate 14 extending below a bottom surface of a corresponding one of the two transverse rods 10 is locked by a lower bolt 37, and the lower bolt 37 enables the locking plate 14 and the lower column 34 to be locked together. By using the locking plate 14 and the upper bolt 36, and the lower bolt 37, the upper column 32, the lower column 34, and a corresponding one of the two transverse rods 10 are fixed together to form a T-shaped structure, providing stability and ease of assembly.

Preferably, the upper column 32 is further locked by a reinforcing bolt 38, and the reinforcing bolt 38 enables the upper column 32 and the joint 342 to be locked together. The reinforcing bolt 38 is located above the upper bolt 36. Further preferably, the lower column 34 is disposed with rivet nuts 39 corresponding to the upper bolt 36, the lower bolt 37, and reinforcing bolt 38.

Preferably, the locking plate 14 is arc-shaped to correspond to the outer surface of the upper column 32 and the outer surface of the lower column 34. A left edge and a right edge of the locking plate 14 are folded toward a corresponding one of the two transverse rods 10.

Preferably, the plurality of frame rods 40 are ten frame rods 40 arranged within the three individual cells.

Referring to FIG. 16, it can be understood that when a double-layer bed (i.e., a bunk bed) uses the bed frame of the present disclosure, a guardrail 90 can be added to the two transverse rods 10 and the two longitudinal rods 20 of an upper bunk of the double-layer bed. Alternatively, the two transverse rods 10 and the two longitudinal rods 20 can be considered as a lower rod of the guardrail 90, and the upright column 30 can be considered as a side rod of the guardrail 90. Additionally, the upper bunk does not require the two supporting rods 70 and the connecting rods 80, but the two transverse rods 10 can still adopt a foldable structure.

The aforementioned embodiments are merely some embodiments of the present disclosure, and the scope of the disclosure is not limited thereto. Thus, it is intended that the present disclosure cover any modifications and variations of the presently presented embodiments provided they are made without departing from the appended claims and the specification of the present disclosure.

INDUSTRIAL APPLICABILITY

The present disclosure provides a bed frame of an iron frame bed comprising two transverse rods symmetrically parallel to each other in a front-and-rear direction, two longitudinal rods symmetrically parallel to each other in a left-and-right direction, four upright columns arranged vertically, and a plurality of frame rods. The two longitudinal rods and the two transverse rods form a rectangular frame, the four upright columns are respectively connected to four corners of the rectangular frame, a length of each of the two transverse rods is greater than a length of each of the two longitudinal rods. The iron frame bed further comprises two or three longitudinal beams connected to the two transverse rods, and the two or three longitudinal beams divide the rectangular frame into three or four individual cells. The plurality of frame rods are evenly disposed in the three or four individual cells, and the plurality of frame rods are arranged transversely. A length of each of the plurality of frame rods is shorter than a length of each of the two or three longitudinal beams, and each end of each of the plurality of frame rods is connected to one of the two longitudinal rods or one of the two longitudinal beams. A length of each of the plurality of frame rods transversely arranged is much shorter than a length of a plurality of frame rods in the existing structure, so an overall weight of the bed frame is not increased. The bed frame can even be lighter than before, and the strength is improved and has industrial applicability.

Claims

1. A bed frame of an iron frame bed, comprising: two transverse rods symmetrically parallel to each other in a front-and-rear direction,two longitudinal rods symmetrically parallel to each other in a left-and-right direction,two or three longitudinal beams connected to the two transverse rods,four upright columns arranged vertically, anda plurality of frame rods, wherein: the two longitudinal rods and the two transverse rods form a rectangular frame,the four upright columns are respectively connected to four corners of the rectangular frame,a length of each of the two transverse rods is greater than a length of each of the two longitudinal rods,the two or three longitudinal beams divide the rectangular frame into three or four individual cells,the plurality of frame rods are evenly disposed in the three or four individual cells,the plurality of frame rods are arranged transversely,a length of each of the plurality of frame rods is shorter than a length of each of the two or three longitudinal beams, andeach end of each of the plurality of frame rods is connected to one of the two longitudinal rods or one of the two or three longitudinal beams.

2. The bed frame of the iron frame bed according to claim 1, wherein: an inner side of each of the two transverse rods is disposed with one or more U-shaped seats,each end of each of the two or three longitudinal beams is supported on the one or more U-shaped seats,each end of each of the two or three longitudinal beams and the one or more U-shaped seats are detachably buckled to each other, andthe two or three longitudinal beams are configured to pull the two transverse rods in a longitudinal direction.

3. The bed frame of the iron frame bed according to claim 2, wherein: a left inner side and a right inner side of the one or more U-shaped seats respectively comprises a protruding tongue,a left side and a right side of each end of each of the two or three longitudinal beams respectively comprises a buckle hole,the protruding tongue is inserted into the buckle hole,a bottom surface of the one or more U-shaped seats comprises a position-limiting block,a bottom surface of each end of each of the two or three longitudinal beams comprises a position-limiting hole, andthe position-limiting block is inserted into the position-limiting hole.

4. The bed frame of the iron frame bed according to claim 1, wherein: each end of each of the plurality of frame rods is flattened and folded down vertically to form a vertical hook,each of the two longitudinal rods and each of the two or three longitudinal beams comprise insertion holes,each of the insertion holes is disposed with a plastic buckle,the vertical hook is inserted into the plastic buckle of a corresponding one of the insertion holes, andan anti-releasing structure is disposed between the vertical hook and the plastic buckle.

5. The bed frame of the iron frame bed according to claim 1, comprising: two supporting rods, anda connecting rod configured to be connected to the two supporting rods, wherein: the two supporting rods are connected to the two transverse rods in a one-to-one correspondence,each of the two supporting rods is located below a middle position of a corresponding one of the two transverse rods,the connecting rod is configured to be connected to the two supporting rods and pull the two supporting rods in a longitudinal direction, andtwo ends of the connecting rod are detachably connected to the two supporting rods.

6. The bed frame of the iron frame bed according to claim 5, wherein: each of the two transverse rods is configured to be folded in half and comprises two transverse rod units, so that each of the two transverse rods is configured to be folded in half using a corresponding one of the two supporting rods as a center line,end surfaces of the connecting rod comprise U-shaped channel steels corresponding to the two supporting rods,the U-shaped channel steels are buckled to the two supporting rods,one or more tongue pieces protrude from a bottom surface of each of the U-shaped channel steels, andeach of the two supporting rods comprises one or more buckle openings, andthe one or more tongue pieces are inserted into the one or more buckle openings.

7. The bed frame of the iron frame bed according to claim 6, wherein: a top end of each of the two supporting rods is disposed with a connecting seat,inner ends of the two transverse rod units are pivotally connected to the connecting seat,the connecting seat comprises a seat plate and two side plates,the seat plate is connected to a top surface of a corresponding one of the two supporting rods,the two side plates are symmetrically connected to two sides of the seat plate,a part of the two side plates extending out of the seat plate is pivotally connected to the two transverse rod units, andwhen the two transverse rods are folded, a corresponding one of the two supporting rods is disposed between the two transverse rod units.

8. The bed frame of the iron frame bed according to claim 7, wherein: each of the four upright columns comprises an upper column and a lower column,the upper column and the lower column are configured to be inserted into each other in an upper-and-down direction,a top end of the lower column has a portion having a diameter that is smaller than a remaining portion to form a joint,the upper column is sleeved on the joint,end portions of the two longitudinal rods are fixedly connected to the lower columns of the four upright columns,each of outer ends of the two transverse rod units is disposed with a locking plate,the locking plate abuts an outer surface of the upper column and an outer surface of the lower column,a first part of the locking plate extending above a top surface of a corresponding one of the two transverse rods is locked by an upper bolt,the upper bolt enables the locking plate, the upper column, and the joint to be locked together,a second part of the locking plate extending below a bottom surface of the corresponding one of the two transverse rods is locked by a lower bolt, andthe lower bolt enables the locking plate and the lower column to be locked together.

9. The bed frame of the iron frame bed according to claim 8, wherein: the upper column is further locked by a reinforcing bolt,the reinforcing bolt enables the upper column and the joint to be locked together,the reinforcing bolt is located above the upper bolt, andthe lower column is disposed with rivet nuts corresponding to the upper bolt, the lower bolt, and the reinforcing bolt.

10. The bed frame of the iron frame bed according to claim 9, wherein: the locking plate is arc-shaped to correspond to the outer surface of the upper column and the outer surface of the lower column,a left edge and a right edge of the locking plate are folded toward the corresponding one of the two transverse rods, andthe plurality of frame rods are ten frame rods arranged within the three or four individual cells.

11. The bed frame of the iron frame bed according to claim 2, wherein: each end of each of the plurality of frame rods is flattened and folded down vertically to form a vertical hook,each of the two longitudinal rods and each of the two or three longitudinal beams comprise insertion holes,each of the insertion holes is disposed with a plastic buckle,the vertical hook is inserted into the plastic buckle of a corresponding one of the insertion holes, andan anti-releasing structure is disposed between the vertical hook and the plastic buckle.

12. The bed frame of the iron frame bed according to claim 3, wherein: each end of each of the plurality of frame rods is flattened and folded down vertically to form a vertical hook,each of the two longitudinal rods and each of the two or three longitudinal beams comprise insertion holes,each of the insertion holes is disposed with a plastic buckle,the vertical hook is inserted into the plastic buckle of a corresponding one of the insertion holes, andan anti-releasing structure is disposed between the vertical hook and the plastic buckle.