Foldable frame body

Abstract

A foldable frame body comprises a polygonal frame body formed by a plurality of side rods in a surrounding mode and supporting assemblies arranged below the side rods. An upper connecting seat is arranged between every two adjacent side rods, each side rod comprises two sections of rods, the close ends of the two sections of rods are mutually pivoted together, and the far ends of the two sections of rods are respectively pivoted to the corresponding upper connecting seats; a lower connecting seat is arranged below each upper connecting seat; each supporting assembly comprises two supporting rods which are crossed and pivoted in an X shape, the upper ends of the two supporting rods are pivoted to the corresponding upper connecting seats respectively, and the lower ends of the two supporting rods are pivoted to the corresponding lower connecting seats respectively; during folding, the close ends of the two-section rods of each side rod move upwards, the far ends of the two-section rods of each side rod are close to each other, the two supporting rods of each supporting assembly are close to each other, and the two-section rods of each side rod and the two supporting rods of each supporting assembly are close to the center of the foldable frame body. The foldable frame body can be rapidly folded, and the supporting stability is high when the foldable frame body is unfolded for use.

Description

Technical Field

[0001] The utility model relates to the field of support frames, and in particular to a foldable frame body. Background Art

[0002] At present, many devices or apparatuses have foldable frame bodies to achieve the purpose of convenient storage and carrying.

[0003] For example, in order to facilitate storage and carrying, the bed frame of an existing trampoline is generally set to be a foldable structure. However, when the bed frame is folded, it is usually necessary to detach the support legs from the frame body before the frame body can be folded, which is rather cumbersome and not conducive to rapid folding. Moreover, the support legs in the existing trampoline bed frame are mostly vertical rod structures arranged along the circumferential direction of the frame body. Due to the large span between the vertical rods, the support stability is not high.

[0004] Therefore, it is necessary for relevant practitioners to make improvements. Content of the Utility Model

[0005] The purpose of the utility model is to provide a foldable frame body that can be quickly folded and has high support stability when unfolded and used.

[0006] The purpose of the utility model is realized through the following technical solutions:

[0007] A foldable frame body includes a polygonal frame body surrounded by a plurality of side rods and support components arranged below each side rod; an upper connecting seat is provided between every two adjacent side rods, and each side rod includes two sections of rods. The adjacent ends of the two sections of rods are pivotally connected together, and the remote ends of the two sections of rods are respectively pivotally connected to the corresponding upper connecting seats; a lower connecting seat is provided below each upper connecting seat; each support component includes two struts pivotally connected in an X shape. The upper ends of the two struts are respectively pivotally connected to the corresponding upper connecting seats, and the lower ends of the two struts are respectively pivotally connected to the corresponding lower connecting seats; when the foldable frame body is folded, the adjacent ends of the two sections of rods of each side rod move upward, the remote ends of the two sections of rods of each side rod approach each other, the two struts of each support component approach each other, and moreover, as the remote ends of the two sections of rods of each side rod approach each other, the two sections of rods of each side rod and the two struts of each support component also approach the center of the foldable frame body.

[0008] Further, the two sections of rods of each side rod are in a straight line when unfolded.

[0009] Further, each lower connecting seat is directly below the corresponding upper connecting seat, and a support plane adapted to contact the ground is provided at the bottom of each lower connecting seat.

[0010] Further, the pivotal connection positions of the adjacent ends of the two sections of rods of each side rod and the pivotal connection positions of the two struts in the corresponding support component are on the same vertical line.

[0011] Furthermore, the pivoting positions at the far ends of the two sections of each side rod are respectively on the same vertical line as the upper pivoting positions and the lower pivoting positions of the two support rods in the corresponding support assembly.

[0012] Furthermore, the two sections of each side rod are respectively defined as a first section rod and a second section rod, wherein the first section rod is provided with a first pivot member near the end of the second section rod, and the second section rod is provided with a second pivot member near the end of the first section rod; the first pivot member includes a first plug-in portion inserted into and fixedly connected to the end of the first section rod, a first circular pivot portion exposed outside the end of the first section rod, a first arc-shaped recessed portion located on one side of the first circular pivot portion close to the first plug-in portion and extending outward along the axial direction of the first circular pivot portion, and a first limiting abutment top portion located in the upper middle of the first circular pivot portion; the second pivot member includes a second plug-in portion inserted into and fixedly connected to the end of the second section rod, a second circular pivot portion exposed outside the end of the second section rod and staggered with the first circular pivot portion shaped pivot part, a second arc-shaped recess located on one side of the second circular pivot part close to the second plug-in part and extending inwardly along the axial direction of the second circular pivot part, and a second limit abutment top part located in the upper middle part of the second circular pivot part; the first circular pivot part and the second circular pivot part are close to each other and are pivoted by a pin, the first arc-shaped recess can be slidably fitted on the outer circular surface of the second circular pivot part, and the second arc-shaped recess can be slidably fitted on the outer circular surface of the first circular pivot part; when the two-section rod of each side rod is unfolded, the first arc-shaped recess slides to the upper side of the outer circular surface of the second circular pivot part, the second arc-shaped recess slides to the upper side of the outer circular surface of the first circular pivot part, and the first limit abutment top part and the second limit abutment top part abut against each other.

[0013] Furthermore, two first pivot grooves are symmetrically provided on both sides of the upper end of each upper connecting seat, and the two first pivot grooves are used to respectively pivot the corresponding end parts of the section rod; the lower end of each upper connecting seat has a second pivot groove arranged innerward and a third pivot groove arranged outerward on both sides, the second pivot groove is used for pivoting the corresponding upper end of the inner support rod, and the third pivot groove is used for pivoting the corresponding upper end of the outer support rod; each lower connecting seat has a fourth pivot groove arranged innerward and a fifth pivot groove arranged outerward on both sides, the fourth pivot groove is used for pivoting the corresponding lower end of the inner support rod, and the fifth pivot groove is used for pivoting the corresponding lower end of the outer support rod.

[0014] Furthermore, the polygonal frame is a regular polygonal frame surrounded by a plurality of side rods of equal length.

[0015] Furthermore, the dimension of the polygonal frame in the height direction after folding is smaller than the dimension of the support assembly in the height direction after folding.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] First of all, when the foldable frame provided by the utility model is folded, the polygonal frame body can be folded and retracted together with the support assembly, thus avoiding the defect in the prior art that the frame body needs to be disassembled before the legs can be folded, greatly improving the convenience of operation, and further enabling rapid folding.

[0018] Secondly, in the utility model, each support assembly adopts an X-shaped cross-bar structure, and two adjacent X-shaped cross-bar structures are connected together through an upper connecting seat and a lower connecting seat, so the support stability during use is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 12 is a perspective view of the unfolded state of a foldable frame body described in the utility model.

[0020] Figure 2 FIG. 16 is a side view of the unfolded state of a foldable frame body described in the utility model.

[0021] Figure 3 FIG. 20 is a schematic diagram of the pivotal connection of the proximal ends of the two-section rods of each side rod in the utility model.

[0022] Figure 4 FIG. 24 is an outer perspective view of the first pivotal connection member and the second pivotal connection member in the separated state in the utility model.

[0023] Figure 5 FIG. 28 is an inner perspective view of the first pivotal connection member and the second pivotal connection member in the separated state in the utility model.

[0024] Figure 6 FIG. 32 is a perspective view of the upper connecting seat in the utility model from a downward angle.

[0025] Figure 7 FIG. 36 is a perspective view of the upper connecting seat in the utility model from an upward angle.

[0026] Figure 8 FIG. 40 is a perspective view of the lower connecting seat in the utility model from a downward angle.

[0027] Figure 9 FIG. 44 is a perspective view of the lower connecting seat in the utility model from an upward angle.

[0028] Figure 10 FIG. 48 is a perspective view of the folded state of a foldable frame body described in the utility model.

[0029] Figure 11 FIG. 52 is a schematic diagram of the application of a foldable frame body described in the utility model on a trampoline. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The following embodiments given in conjunction with the drawings will further elaborate on the present utility model in detail.

[0031] As Figures 1 to 10 shown, a foldable frame body of the present utility model includes a polygonal frame body 1 formed by surrounding multiple side rods 1a and a support assembly 2 provided below each side rod 1a. An upper connecting seat 3 is provided between every two adjacent side rods 1a, and each side rod 1a includes two sections of rods 1a1 and 1a2. The adjacent ends of the two sections of rods 1a1 and 1a2 are pivotally connected together, and the remote ends of the two sections of rods 1a1 and 1a2 are respectively pivotally connected to the corresponding upper connecting seat 3. A lower connecting seat 4 is provided below each upper connecting seat 3. Each support assembly 2 includes two struts 2a and 2b pivotally connected in an X shape. The upper ends of the two struts 2a and 2b are respectively pivotally connected to the corresponding upper connecting seat 3, and the lower ends of the two struts 2a and 2b are respectively pivotally connected to the corresponding lower connecting seat 4.

[0032] When the foldable frame body is folded, the adjacent ends of the two sections of rods 1a1 and 1a2 of each side rod 1a move upward, the remote ends of the two sections of rods 1a1 and 1a2 of each side rod 1a approach each other, and the two struts 2a and 2b of each support assembly 2 approach each other. Moreover, as the remote ends of the two sections of rods 1a1 and 1a2 of each side rod 1a approach each other, the two sections of rods 1a1 and 1a2 of each side rod 1a and the two struts 2a and 2b of each support assembly 2 also approach the center of the foldable frame body.

[0033] Each lower connecting seat 4 is located directly below the corresponding upper connecting seat 3, and a support plane 40 suitable for contacting the ground is provided at the bottom of each lower connecting seat 4. During use, the foldable frame body is placed on the ground by means of the respective support planes 40. And, in order to increase stability, the support plane 40 can protrude outward relative to the lower connecting seat 4 in the circumferential direction to increase its contact area with the ground.

[0034] The polygonal frame body 1 is a regular polygonal frame body formed by surrounding multiple side rods 1a of equal length. Moreover, the pivotal connection position A1 of the adjacent ends of the two sections of rods 1a1 and 1a2 of each side rod 1a and the pivotal connection position B1 of the two struts 2a and 2b in the corresponding support assembly 2 are on the same vertical line. The pivotal connection positions A2 and A3 of the remote ends of the two sections of rods 1a1 and 1a2 of each side rod 1a and the upper pivotal connection positions B2 and B3 and the lower pivotal connection positions B4 and B5 of the two struts 2a and 2b in the corresponding support assembly 2 are on the same vertical line. Such a design can improve the flexibility and convenience of the foldable frame body during folding and unfolding.

[0035] The two sections 1a1 and 1a2 of each side rod 1a are respectively defined as the first section rod 1a1 and the second section rod 1a2, wherein the first section rod 1a1 is provided with a first pivot member 5 at the end close to the second section rod 1a2, and the second section rod 1a2 is provided with a second pivot member 6 at the end close to the first section rod 1a1.

[0036] The first pivot member 5 includes a first plug-in portion 51 inserted into and fixedly connected to the end of the first section rod 1a1, a first circular pivot portion 52 exposed outside the end of the first section rod 1a1, a first arc-shaped recessed portion 53 located on a side of the first circular pivot portion 52 close to the first plug-in portion 51 and extending outward along the axial direction of the first circular pivot portion 52, and a first limiting abutment top portion 54 located in the upper middle of the first circular pivot portion 52.

[0037] The second pivot member 6 includes a second plug-in portion 61 inserted into the end of the second section rod 1a2 and fixedly connected thereto, a second circular pivot portion 62 exposed outside the end of the second section rod 1a2 and staggered with the first circular pivot portion 52, a second arc-shaped recessed portion 63 located on a side of the second circular pivot portion 62 close to the second plug-in portion 61 and extending inwardly along the axial direction of the second circular pivot portion 62, and a second limiting stop top portion 64 located in the upper middle of the second circular pivot portion 62.

[0038] The first circular pivot portion 52 and the second circular pivot portion 62 are placed together and pivoted by a pin 7 . The first arcuate recess 53 can be slidably fitted on the outer circular surface of the second circular pivot portion 62 , and the second arcuate recess 63 can be slidably fitted on the outer circular surface of the first circular pivot portion 52 .

[0039] The two sections 1a1 and 1a2 of each side rod 1a are in a straight line when unfolded, and on the one hand, the first arc-shaped recess 53 slides to the upper side of the outer circular surface of the second circular pivot portion 62, and the second arc-shaped recess 63 slides to the upper side of the outer circular surface of the first circular pivot portion 52, so that the adjacent ends of the two sections 1a1 and 1a2 will not flip downward, and on the other hand, the first limit stop top 54 and the second limit stop top 64 abut against each other, so that when there is no external force to pull the side rod 1a upward, the two sections 1a1 and 1a2 will not fold upward by themselves.

[0040] Two first pivoting grooves 31 , 32 are symmetrically disposed on both sides of the upper end of each upper connecting seat 3 . The two first pivoting grooves 31 , 32 are used for pivoting the ends of the corresponding section rods 1 a 1 , 1 a 2 , respectively.

[0041] Among the two support rods 2a and 2b of each support component 2, one support rod 2a is located on the inner side, and the other support rod 2b is located on the outer side. At both sides of the lower end of each upper connecting seat 3, there are respectively a second pivot groove 33 arranged inwardly and a third pivot groove 34 arranged outwardly. The second pivot groove 33 is used for the upper end of the corresponding inner-side support rod 2a to be pivotally connected, and the third pivot groove 34 is used for the upper end of the corresponding outer-side support rod 2b to be pivotally connected. At both sides of each lower connecting seat 4, there are respectively a fourth pivot groove 41 arranged inwardly and a fifth pivot groove 42 arranged outwardly. The fourth pivot groove 41 is used for the lower end of the corresponding inner-side support rod 2a to be pivotally connected, and the fifth pivot groove 42 is used for the lower end of the corresponding outer-side support rod 2b to be pivotally connected.

[0042] Moreover, the dimension of the polygon frame body 1 in the height direction after folding is smaller than the dimension of the support component 2 in the height direction after folding, thereby further reducing the volume of the foldable frame body after folding.

[0043] The folding process of the foldable frame body of the present utility model can be as follows: First, lift each side rod 1a upward to pre-fold each side rod 1a upward by a small section, that is, by lifting, the adjacent ends of the second-stage rods 1a1 and 1a2 of each side rod 1a are moved upward by a small distance. Then, push the entire foldable frame body inward so that each side rod 1a together with each support component 2 approaches the center of the foldable frame body to the closed state, thereby enabling rapid folding, and the whole process is very convenient.

[0044] As Figure 11 shown, in a specific application example of the present utility model, the foldable frame body 100 can be used as the bed frame of a trampoline. Among them, the periphery of the bouncing cloth 200 of the trampoline is connected to each side rod 1a through a plurality of elastic band components 300, and the handrail rod 400 is inserted into the corresponding group of upper connecting seats 3 and lower connecting seats 4. In this way, when the foldable frame body 100 is folded, it can be folded together with the bouncing cloth 200, the elastic band components 300 and the handrail rod 400.

[0045] Certainly, in other application examples of the present utility model, the foldable frame body 100 can also be used as the support frame of products such as tables.

[0046] The above are only the preferred embodiments of the present utility model, and the scope of implementation of the present utility model cannot be limited thereby. That is, all simple equivalent changes and modifications made according to the scope of the patent application of the present utility model and the content of the utility model description still fall within the scope covered by the patent of the present utility model.

Claims

1. A foldable frame, characterized in that: It includes a polygonal frame surrounded by a plurality of side bars and a support assembly arranged under each side bar; An upper connecting seat is provided between two adjacent side bars, and each side bar includes two sections of bars, the proximal ends of the two sections of bars are pivotally connected to each other, and the distal ends of the two sections of bars are respectively pivotally connected to the corresponding upper connecting seats; A lower connecting seat is provided below each upper connecting seat; Each support assembly includes two X-shaped cross-pivoted support rods, the upper ends of the two support rods are respectively pivoted to the corresponding upper connecting seats, and the lower ends of the two support rods are respectively pivoted to the corresponding lower connecting seats; When the foldable frame is folded, the proximal ends of the two sections of each side rod move upward, the distal ends of the two sections of each side rod approach each other, and the two support rods of each supporting assembly approach each other. Moreover, as the distal ends of the two sections of each side rod approach each other, the two sections of each side rod and the two support rods of each supporting assembly also approach the center of the foldable frame.

2. A foldable frame according to claim 1, characterized in that: The two sections of each side rod are in a straight line shape when unfolded.

3. The foldable frame according to claim 1, characterized in that: Each lower connecting seat is located directly below the corresponding upper connecting seat, and the bottom of each lower connecting seat is provided with a supporting plane suitable for contacting the ground.

4. The foldable frame according to claim 1, characterized in that: The pivoting positions of the adjacent ends of the two sections of each side rod and the pivoting positions of the two support rods in the corresponding support assembly are on the same vertical line.

5. The foldable frame according to claim 1, characterized in that: The pivoting positions of the two rod sections of each side rod at the far ends are respectively on the same vertical line as the upper pivoting positions and the lower pivoting positions of the two support rods in the corresponding support assembly.

6. The foldable frame according to claim 1, characterized in that: The two sections of each side rod are respectively defined as a first section rod and a second section rod, wherein the first section rod is provided with a first pivot member near the end of the second section rod, and the second section rod is provided with a second pivot member near the end of the first section rod; the first pivot member includes a first plug-in portion inserted into the end of the first section rod and fixedly connected thereto, a first circular pivot portion exposed outside the end of the first section rod, a first arc-shaped recessed portion located on one side of the first circular pivot portion close to the first plug-in portion and extending outward along the axial direction of the first circular pivot portion, and a first limiting abutment top portion located in the upper middle of the first circular pivot portion; the second pivot member includes a second plug-in portion inserted into the end of the second section rod and fixedly connected thereto, a second circular pivot portion exposed outside the end of the second section rod and staggered with the first circular pivot portion The cam is an arc-shaped recessed portion located on one side of the second circular pivot portion close to the second plug-in portion and extending inwardly along the axial direction of the second circular pivot portion, and a second limit abutment top portion located in the upper middle part of the second circular pivot portion; the first circular pivot portion and the second circular pivot portion are close to each other and are pivoted by a pin, the first arc-shaped recessed portion can be slidably fitted into the outer circular surface of the second circular pivot portion, and the second arc-shaped recessed portion can be slidably fitted into the outer circular surface of the first circular pivot portion; when the two-section rods of each side rod are unfolded, the first arc-shaped recessed portion slides to the upper side of the outer circular surface of the second circular pivot portion, the second arc-shaped recessed portion slides to the upper side of the outer circular surface of the first circular pivot portion, and the first limit abutment top portion and the second limit abutment top portion abut against each other.

7. The foldable frame according to claim 1, characterized in that: Two first pivot grooves are symmetrically provided on both sides of the upper end of each upper connecting seat, and the two first pivot grooves are used to pivot the corresponding ends of the section rods respectively; the lower end of each upper connecting seat is respectively provided with a second pivot groove arranged innerward and a third pivot groove arranged outerward on both sides, the second pivot groove is used for pivoting the corresponding upper end of the inner support rod, and the third pivot groove is used for pivoting the corresponding upper end of the outer support rod; each lower connecting seat is respectively provided with a fourth pivot groove arranged innerward and a fifth pivot groove arranged outerward on both sides, the fourth pivot groove is used for pivoting the corresponding lower end of the inner support rod, and the fifth pivot groove is used for pivoting the corresponding lower end of the outer support rod.

8. The foldable frame according to claim 1, characterized in that: The polygonal frame is a regular polygonal frame surrounded by a plurality of side rods of equal length.

9. The foldable frame according to claim 1, characterized in that: The dimension of the polygonal frame in the height direction after folding is smaller than the dimension of the support assembly in the height direction after folding.

Images