Folding I-shaped supporting frame, storage method and unfolding method thereof and double-head lamp

Abstract

The invention relates to the technical field of supporting devices, in particular to a folding I-shaped supporting frame, a storage method and an unfolding method of the folding I-shaped supporting frame and a double-head lamp. The folding I-shaped supporting frame comprises a first support, a second support and a third support, one end of the second bracket is rotationally connected with one end of the first bracket; one end of the first supporting leg is rotationally connected with the end, away from the second support, of the first support, and the other end is a free end; one end of the second supporting leg is rotationally connected with the end, away from the second support, of the first support, and the other end is a free end; one end of the third supporting leg is rotationally connected with the end, away from the first support, of the second support, and the other end is a free end; one end of the fourth supporting leg is rotationally connected with the end, away from the first support, of the second support, and the other end is a free end. The supporting frame is in an I shape when in an unfolded state. The supporting frame is stable in structure and convenient to store.

Description

Technical Field

[0001] This invention relates to the field of support device technology, and in particular to a folding I-beam support frame and its storage method, unfolding method, and double-headed lamp. Background Technology

[0002] Existing dual-head work lights or work lighting devices generally use fixed I-beam support frames formed by metal welding. These frames are typically welded from square or round metal tubes into a single structure. While providing good load-bearing stability, their inability to be disassembled or folded results in large size, difficult storage, and significant space occupation during use and transportation. Packaging requires large cartons or reinforcement materials, significantly increasing packaging and transportation costs. Furthermore, these support frames are inconvenient to unfold and fold, cumbersome to move, and welded joints are prone to loosening or deformation during repeated handling, affecting the stability and lifespan of the light fixture. In addition, the welded structure cannot be repaired or parts replaced individually after damage, leading to high maintenance costs. Therefore, existing I-beam support frames fail to meet the requirements of structural stability and portable storage. There is an urgent need for a foldable I-beam support frame that can be quickly folded and reduced in size while ensuring operational stability, thus solving the technical problems of traditional I-beam frames in terms of size, storage, transportation, and ease of use. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a foldable I-beam support frame and its storage method, unfolding method, and dual-headed lamp, in order to solve the technical problem that existing I-beam supports are difficult to balance structural stability and portable storage.

[0004] In a first aspect, the present invention provides a foldable I-beam support frame, comprising: First support; The second bracket is rotatably connected to one end of the first bracket at one end of the second bracket. The first support leg has one end rotatably connected to the end of the first bracket away from the second bracket, and the other end is a free end; The second support leg has one end rotatably connected to the end of the first bracket away from the second bracket, and the other end is a free end; The third support leg has one end rotatably connected to the end of the second bracket away from the first bracket, and the other end is a free end; The fourth support leg is rotatably connected at one end to the end of the second bracket away from the first bracket, and the other end is a free end.

[0005] The support frame is H-shaped when it is in the unfolded state.

[0006] In a second aspect, the present application provides a double-head lamp comprising a first lamp, a second lamp and the folding I-shaped support frame of the first aspect, the first lamp being mounted on the first support frame and the second lamp being mounted on the second support frame.

[0007] In a third aspect, the present application provides a folding I-shaped support frame storage method for folding the folding I-shaped support frame of the first aspect, the method comprising: S1: rotating the free ends of the first support leg and the second support leg towards the first support frame to a position where they are close to each other, so that the first support leg and the second support leg are stored below the first support frame; S2: rotating the free ends of the third support leg and the fourth support leg towards the first support frame to a position where they are close to each other, so that the third support leg and the fourth support leg are stored below the second support frame; S3: rotating the first support frame and the second support frame towards each other to a position where they are parallel to each other.

[0008] In a fourth aspect, the present application provides a folding I-shaped support frame unfolding method for unfolding the folding I-shaped support frame of the third aspect, the method comprising: S4: rotating the first support frame and the second support frame away from each other to a position where they are on the same straight line; S5: rotating the free ends of the first support leg and the second support leg away from the first support frame to a position where they are on the same straight line; S6: rotating the free ends of the third support leg and the fourth support leg away from the second support frame to a position where they are on the same straight line.

[0009] In summary, the beneficial effects of the present application are as follows: The folding I-shaped support frame, the folding method, the unfolding method and the double-head lamp provided by the application divide the I-shaped support frame into multiple independent components, set a rotating connection structure between the first support frame and the second support frame, and set a pair of rotatable support feet at the distal end of each support frame, so that the support frame forms an I-shaped overall structure when unfolded, and has good balance and stress stability; when folded, the first support frame and the second support frame can be folded along the rotating connection axis direction, and each support foot can be rotated to the inner side of the corresponding support frame and attached, so that the overall volume of the support frame is significantly reduced, and compact folding is achieved. The rotating connection replaces the traditional welded fixed connection, so that the support structure has a foldable feature, which not only reduces the storage space and transportation volume, but also avoids the problems of high manufacturing cost and difficult maintenance caused by the multiple welding points and the non-detachable feature of the traditional I-shaped frame. The folded support frame has multiple-point contact self-stabilizing state, and can maintain high structural stability after folding and folding, and is not easy to shake or deform, and is convenient for long-term use and repeated unfolding and folding operation. Under the premise of ensuring the support strength and use safety, the I-shaped support frame has the features of portability, easy folding and easy unfolding, can effectively solve the technical problems of large space occupation, inconvenience of carrying and high packaging and transportation cost of the existing I-shaped support frame, and improves the overall use convenience and structural reliability. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings needed to be used in the embodiments of the application will be briefly introduced below. For those skilled in the art, other drawings can also be obtained without creative labor on the premise that these drawings are within the protection scope of the application.

[0011] Figure 1 is a three-dimensional structure schematic diagram of the folding I-shaped support frame of the application in the unfolded state.

[0012] Figure 2 is a three-dimensional structure schematic diagram of the folding I-shaped support frame of the application in the folded state.

[0013] Figure 3 is a top view of the folding I-shaped support frame of the application in the folded state.

[0014] Figure 4 is a side view of the folding I-shaped support frame of the application in the folded state.

[0015] Figure 5 is a three-dimensional structure schematic diagram of the first support frame of the application.

[0016] Figure 6 is an exploded structure schematic diagram of the first support frame of the application.

[0017] Figure 7 A three-dimensional structure diagram of a first component in the present application.

[0018] Figure 8 A three-dimensional structure diagram of a second support in the present application.

[0019] Figure 9 An exploded structure diagram of the second support in the present application.

[0020] Figure 10 A three-dimensional structure diagram of a third component in the present application.

[0021] Figure 11 A sectional view of a rotating connection part of the first support and the second support in the present application.

[0022] Figure 12 A three-dimensional structure diagram of a first positioning member in the present application.

[0023] Figure 13 A three-dimensional structure diagram of a second positioning member in the present application.

[0024] Figure 14 A structure diagram of a position locking of two supports in the present application.

[0025] Figure 15 A sectional view of a rotating connection of two supporting legs in the present application.

[0026] Figure 16 A three-dimensional structure diagram of a double-head lamp in an unfolded state in the present application.

[0027] Figure 17 A three-dimensional structure diagram of a double-head lamp in a folded state in the present application.

[0028] Figure 18 A flowchart of a folding method of the folding I-shaped support frame in the present application.

[0029] Figure 19 A flowchart of an unfolding method of the folding I-shaped support frame in the present application.

[0030] Parts and their numbers in the figure: The first support 1, the first component 11, the first adapter 111, the first cylindrical inner wall 1111, the first bottom plate 1112, the first inner groove 1113, the first intermediate part 112, the clamping hook 1121, the first connecting part 113, the second component 12, the second support 2, the third component 21, the second adapter 211, the third cylindrical inner wall 2111, the first top plate 2112, the third inner groove 2113, the fourth inner groove 2114, the second intermediate part 212, the clamping groove 2121, the second connecting part 213, the fourth component 22, the first supporting leg 3, the third adapter 31, the second supporting leg 4, the fourth adapter 41, the third supporting leg 5, the fourth supporting leg 6, the first positioning member 71, the first cylindrical surface 711, the first step surface 712, the first boss 713, the third boss 714, the first through hole 715, the first flange 716, the second positioning member 72, the second step surface 721, the second boss 722, the first inner groove 723, the second through hole 724, the second cylindrical surface 725, the first bolt 73, the first nut 74, the third positioning member 81, the fourth boss 811, the fifth inner groove 8111, the third through hole 812, the fourth positioning member 82, the fifth boss 821, the fourth through hole 822, the second bolt 83, the second nut 84, the first lamp 9, and the second lamp 10. DETAILED DESCRIPTION

[0031] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. The following detailed description is merely intended to teach a person skilled in the art how to make and use the best mode of the present application and is not intended to limit the scope of the application. The present application can be practiced with some of the specific details disclosed herein. The following description of the embodiments is merely exemplary in nature and is not intended to limit the present application.

[0032] It should be noted that the relative terms, such as first and second, etc., are used herein only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between such entities or operations. Moreover, the terms "comprising", "including", or any other variant thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements recited, but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by an "includes" statement does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element.

[0033] It should be noted that all the actions of obtaining signals, information or data in the present application are carried out in accordance with the corresponding data protection regulations and policies of the place, and with the authorization given by the owner of the corresponding device.

[0034] Embodiment 1 Please refer to Figure 1 The embodiment provides a folding H-shaped support frame, which comprises a first support 1, a second support 2, a first support leg 3, a second support leg 4, a third support leg 5 and a fourth support leg 6.

[0035] The first support 1 and the second support 2 are main beam structures for carrying lamps or other devices, one end of the second support 2 is rotatably connected to one end of the first support 1; one end of the first support leg 3 is rotatably connected to the end of the first support 1 away from the second support 2, and the other end is a free end; one end of the second support leg 4 is rotatably connected to the end of the first support 1 away from the second support 2, and the other end is a free end; one end of the third support leg 5 is rotatably connected to the end of the second support 2 away from the first support 1, and the other end is a free end; one end of the fourth support leg 6 is rotatably connected to the end of the second support 2 away from the first support 1, and the other end is a free end. The support frame is in the shape of H when it is in the unfolded state.

[0036] The four support legs mentioned above are rotatable legs extending from the bottom of the support frame, which are used to provide ground support and stability; The free end mentioned above refers to the end of the support leg that is not fixedly connected to any other part, and the other end opposite to it is a rotatably connected end. The rotatably connected end is fixed to the support frame through a rotating shaft, a pin shaft or a pivoting assembly, so that the support leg can rotate relative to the axis; and the free end is not constrained and can move along a preset circular arc track during rotation.

[0037] The rotatable connection mentioned above refers to a connection mode between two components that can rotate relative to each other through a rotating shaft or a pivoting assembly, so that the support frame or the support leg can switch positions between different angles. For example, the first support 1 and the second support 2 are connected through a rotating shaft, so that they can be unfolded or folded around the axis; each support leg is also connected to the end of the support frame through a rotating member, which is rotated outward to support when needed, and is inwardly fitted when stored.

[0038] Please refer to Figures 2 to 4The embodiment is characterized in that the rotating connection is arranged between the two supports, and two groups of rotating supporting feet are arranged at two ends of each support, so that the whole supporting structure is in the shape of an I-beam in the unfolded state. The first support 1 and the second support 2 form the beam part of the I-beam, and the four supporting feet form the vertical supporting lines at the two ends of the I-beam. When unfolded, the supporting feet are distributed on the two sides of the I-beam, achieving balance of the moment of force in the horizontal and vertical directions; and when folded, the supports and the supporting feet are rotated along the axis to be attached through the rotating connection, thereby significantly reducing the volume. The embodiment realizes the geometric transformation between the space unfolding and folding through the rotating connection, so that the supporting frame can not only stably bear, but also be folded into a compact form in the non-use state.

[0039] When the supporting frame is unfolded, the two supports are rotated along the rotating shaft to the I-beam state, and the supporting feet are opened outward to form a stable four-point supporting plane; when folded, the supporting feet are rotated inward along the connecting axis to be attached to the bottom surface of the support, and the two supports are rotated towards each other and folded, thereby realizing rapid folding and compact storage. The “free end” of the supporting foot, that is, the end away from the rotating shaft, is in contact with the ground to form a supporting point when unfolded, and can be folded inward to save space when folded.

[0040] After adopting the foregoing structure, the folding I-beam supporting frame can maintain the high-stability I-beam supporting structure in use, disperse the gravity of the lamp and the impact of external force, and prevent overturning; when folded, the rotating parts are folded towards each other, and the overall volume is significantly reduced. The structure after folding still forms a self-stable state of multiple-point contact, and is not easy to shake or deform, facilitating transportation and long-term storage. Therefore, compared with the existing welded fixed I-beam, the embodiment not only greatly improves the portability and use flexibility, but also reduces the packaging and transportation cost, and has the advantages of rapid folding, stable storage, and the like while maintaining the bearing strength.

[0041] As shown in FIG. 1, Figures 5 to 7 In the embodiment, the first support 1 includes a first part 11 and a second part 12, one end of the first part 11 is connected with one end of the second part 12, the first part 11 includes a first adapter 111, a first intermediate part 112, and a first connecting part 113, the first intermediate part 112 is connected with the first adapter 111, the first connecting part 113 is connected with one end of the first intermediate part 112 away from the first adapter 111, and one end of the first connecting part 113 away from the first intermediate part 112 is connected with the first part 11.

[0042] In the embodiment, the first support 1 is one of the main load-bearing components supporting the overall structure, and is used to form a H-shaped main beam together with the second support 2; and the first component 11 and the second component 12 are two sub-segment structures of the support, and are used to realize segmented connection and extension of the support. The first adapter 111 is a segment structure of the first component 11 near the rotating connection end, is connected with the second support 2 or the pivot assembly, and bears the rotating connection and force transmission. The first intermediate part 112 is a middle segment of the support between the adapter and the connecting part, is used to transmit structural stress and maintain the rigidity of the support. The first connecting part 113 is arranged at the end away from the adapter, is used to connect with another part of the first component 11 or other structural components, and thus forms a force transmission path that is rigid and continuous as a whole.

[0043] In the embodiment, the multi-segment structure of the first support 1 is functionally divided, so that the first support 1 not only forms a rotating connection with the second support 2, but also has manufacturability and assembly of the segmented structure. By arranging the adapter, the intermediate part and the connecting part in the first support 1, the different structural segments can be functionally divided: the adapter realizes rotating installation, the intermediate part bears force transmission, and the connecting part completes structural extension and fixation, so that the support is easy to manufacture, assemble and locally maintain while the strength of the support is ensured.

[0044] The first support 1 can be made of a metal square tube or a composite material profile, and the first component 11 and the second component 12 form a whole by insertion or threaded connection. The end of the first adapter 111 can be rotatably connected with the second support 2 through a rotating shaft or a pivot assembly, to form a pivot joint between the supports.

[0045] As shown in Figures 8 to 10 , similar to the structure of the first support 1, in the embodiment, the second support 2 includes a third component 21 and a fourth component 22. One end of the third component 21 is connected with one end of the fourth component 22. The third component 21 includes a second adapter 211, a second intermediate part 212 and a second connecting part 213. The second intermediate part 212 is connected with the second adapter 211. The second connecting part 213 is connected with one end of the second intermediate part 212 away from the second adapter 211. One end of the second connecting part 213 away from the second intermediate part 212 is connected with the second component 12.

[0046] As shown in Figure 7 and Figure 10 , in the embodiment, the outer wall of the first adapter 111 is a cylindrical surface, the outer wall of the second adapter 211 is a cylindrical surface, the surface of the first intermediate part 112 connected with the first adapter 111 is a cylindrical surface matched with the outer wall of the second adapter 211, and the surface of the second intermediate part 212 connected with the second adapter 211 is a cylindrical surface matched with the outer wall of the second adapter 211.

[0047] In the embodiment, the outer wall of the first adapter 111 and the second adapter 211 is a cylindrical surface, which can make the connection area of the two support end portions have the same or similar curvature characteristics, thereby ensuring smooth rotation movement when the two are rotationally connected. The contact surface between the middle section of the first support 1 and the adapter end is a curved surface that is adapted to the outer wall of the other support end portion, which can maintain continuous fitting during unfolding or folding. The same structural characteristics are formed between the middle section of the second support 2 and the adapter thereof, thereby realizing consistent rotation axis and continuous matching of curved surfaces as a whole.

[0048] In the embodiment, the combination interface between the adapter and the middle section is designed as a cylindrical surface that matches each other, so that the first support 1 and the second support 2 can smoothly rotate along the same circumferential path when folding or unfolding, avoiding corner contact or structural interference. The phenomenon of jamming, eccentricity or stress concentration at the interface when the support is unfolded is avoided, which affects the stability of the support. In the embodiment, the tangential and matching relationship between the cylindrical surfaces forms a stable rotating pair, so that the connecting part can not only bear the radial load, but also ensure smooth rotation. The inner wall of the cylindrical surface of the first middle section 112 and the second middle section 212 respectively forms a rotatable sleeve connection with the outer wall of the corresponding adapter when assembled, and when the support is unfolded, the matching between the cylindrical surfaces makes the stress distribution uniform; when the support is folded, the cylindrical surfaces slide along the circular arc direction, keeping the axis concentric to prevent rotation deviation. Through the cylindrical surface matching structure, the support moves smoothly and accurately during unfolding and folding.

[0049] In the embodiment, the first adapter 111 and the second adapter 211 are stacked along the axis direction of the rotational connection of the first support 1 and the second support 2.

[0050] The laminated arrangement refers to two or more structural members arranged in sequence along the same direction, sharing the same central axis or pivot axis, to form a compact spatial layout; the axis direction of the rotary connection refers to the central axis direction around which the first support 1 and the second support 2 rotate relative to each other. In the embodiment, the first adapter 111 and the second adapter 211 are arranged in the same axis direction in a laminated manner, so that the pivot structure between the two supports is more concentrated, symmetrical and compact. The aforementioned laminated arrangement can significantly reduce the transverse space occupied by the connection position, so that the components fit more closely when the support is folded, thereby reducing the overall folding volume; at the same time, since the two adapters share the same rotary shaft center line, the force path and motion trajectory during rotation are completely consistent, avoiding the problem of axis deviation or support misalignment during rotation. Through the combination of axis collinearity and laminated arrangement, a stable, compact and motion-consistent pivot unit is formed. The embodiment not only improves the compactness of the folding mechanism through laminated arrangement, but also effectively reduces the volume and weight of the support connection area while ensuring structural strength, so that the entire folding support is more flat when stored, and maintains balanced and smooth rotation characteristics when unfolded.

[0051] In the embodiment, the difference between the height of the first adapter 111 and the first intermediate part 112 is the thickness of the second adapter 211, and the difference between the height of the second adapter 211 and the first intermediate part 112 is the thickness of the first adapter 111.

[0052] The aforementioned difference in height refers to the difference in size of adjacent structural members in the axial stacking direction, i.e., the difference in height between the outer surfaces or connecting surfaces of the two components; the aforementioned thickness represents the size of the corresponding adapter along the axis direction. In the embodiment, the equal relationship between the height difference and the thickness of the corresponding adapter is defined, so that the connecting surfaces of the support can be flush and fit when unfolded, improving the overall rigidity; when folded, the components can rotate smoothly without axial gaps, ensuring smooth movement.

[0053] Similarly, in the embodiment, the difference between the height of the first adapter 111 and the first intermediate part 112 is the thickness of the second adapter 211, and the difference between the height of the second adapter 211 and the first intermediate part 112 is the thickness of the first adapter 111. The aforementioned structure in the embodiment allows the connecting surfaces of the support to be flush and fit when unfolded, improving the overall rigidity; when folded, the components can rotate smoothly without axial gaps, ensuring smooth movement.

[0054] As Figure 11As shown, in the embodiment, a first pivot assembly is further included, which comprises a first positioning member 71 and a second positioning member 72, the first positioning member 71 and the second positioning member 72 are arranged in a stacked manner along the axis direction of the rotation connection between the first support 1 and the second support 2, the first positioning member 71 is provided with a first cylindrical surface 711, the first adapter 111 is provided with a first cylindrical inner wall 1111, the first cylindrical inner wall 1111 is sleeved on the first cylindrical surface 711, the second adapter 211 is provided with a third cylindrical inner wall 2111, the second positioning member 72 is provided with a second cylindrical surface 725, and the third cylindrical inner wall 2111 is sleeved on the second cylindrical surface 725.

[0055] The first pivot assembly of the embodiment comprises the first positioning member 71 and the second positioning member 72, which are arranged in a stacked manner along the rotation axis of the support, i.e. arranged in sequence on the same central axis, so that the entire pivot unit structure is compact and the force is uniform.

[0056] As shown in Figure 12 and Figure 13 In the embodiment, the first positioning member 71 and the second positioning member 72 are arranged between the first support 1 and the second support 2, and the cylindrical surface and the cylindrical inner wall are arranged on the surface to realize coaxial rotation and accurate positioning. Among them, the first positioning member 71 is provided with a first cylindrical surface 711, the first adapter 111 is provided with a first cylindrical inner wall 1111, and the two are matched in a sleeved manner, so that the first positioning member 71 and the first support 1 form a rotatable connection; the second positioning member 72 is provided with a second cylindrical surface 725, and the second adapter 211 is provided with a third cylindrical inner wall 2111, which are also assembled in a sleeved manner, so as to realize the rotatable connection between the second support 2 and the second positioning member 72. Through this double-layer cylindrical surface matching mode, the two supports can rotate relative to the same axis, and each rotating pair has an independent supporting surface and a limiting surface, which can maintain good concentricity and structural stability during rotation. The embodiment forms two-stage rotating pairs by using the sleeved relationship between the inner wall and the outer wall, so that the rotation accuracy and the anti-shaking ability are improved at the same time.

[0057] In the embodiment, the first adapter 111 is provided with a first bottom plate 1112, the second adapter 211 is provided with a first top plate 2112, the first bottom plate 1112 faces the first top plate 2112, the first positioning member 71 is provided with a first stepped surface 712, the second positioning member 72 is provided with a second stepped surface 721, and the first bottom plate 1112 and the second top plate are located between the first stepped surface 712 and the first stepped surface 712.

[0058] In the embodiment, the first bottom plate 1112 and the first top plate 2112 are respectively arranged on the first adapter 111 and the second adapter 211 to define the relative distance between the two supports in the stacked state and provide an axial support surface; the first step surface 712 and the second step surface 721 are arranged on the first positioning member 71 and the second positioning member 72 to provide a positioning interface for abutting the bottom plate and the top plate.

[0059] In the embodiment, the step surfaces are arranged on the two positioning members, and the bottom plate and the top plate are clamped between the two step surfaces to form an axial clamping type positioning structure. The step surfaces form a clamping type limiting relationship with the bottom plate and the top plate, and the bottom plate and the top plate are constrained between the step surfaces in the axial direction, so that even if the rotation process is subjected to external force pulling or gravity, axial movement or loosening phenomenon will not occur. The first bottom plate 1112 and the second top plate are always in a clamped state after assembly, and the step surfaces form a bidirectional thrust interface in the upward and downward directions.

[0060] In the embodiment, the first positioning member 71 is provided with a first boss 713, the second positioning member 72 is provided with a second boss 722, the end surface of the second boss 722 facing the first adapter 111 is a second step surface 721, the second boss 722 is provided with a first inner groove 723, and at least a part of the first boss 713 is located in the first inner groove 723.

[0061] In the embodiment, the first boss 713 is arranged on the first positioning member 71, the second boss 722 is arranged on the second positioning member 72, and the first inner groove 723 is formed on the second boss 722, and at least a part of the first boss 713 is embedded in the first inner groove 723 to form a combined structure with ring direction self-limiting and axial constraint. When the support is unfolded or folded, the cooperation of the first boss 713 and the inner groove makes the two positioning members always maintain a coaxial state; after rotating to a predetermined angle, the boss edge and the inner wall of the groove abut each other to form a stable angle limiting and anti-reverse structure. At the same time, the side of the second boss 722 facing the first adapter 111 is provided with the second step surface 721, which can provide thrust support in the axial direction, and form a complete axial clamping structure with the bottom plate, the top plate and the step surface. The embedded structure of the first boss 713 and the groove provides a radial self-centering effect to ensure the coaxial accuracy of the support during rotation; the second step surface 721 and the adjacent components form a bidirectional limiting surface to prevent axial loosening caused by vibration or load change; In the embodiment, the first positioning member 71 comprises a third boss 714 located on the side of the first boss 713 away from the second positioning member 72, the diameter of the second boss 722 is greater than that of the first boss 713, the end face of the second boss 722 is the first stepped face 712, and the first adapter 111 is further provided with a second inner groove 1113, and the third boss 714 is located in the second inner groove 1113.

[0062] In the embodiment, the first positioning member 71 comprises a third boss 714 located on the side of the first boss 713 away from the second positioning member 72, the diameter of the second boss 722 is greater than that of the first boss 713, the end face of the second boss 722 is the first stepped face 712, and the first adapter 111 is further provided with a second inner groove 1113, and the third boss 714 is located in the second inner groove 1113.

[0063] In the embodiment, the first positioning member 71 is further provided with a first flange 716 located on the side of the third boss 714 away from the second positioning member 72 and on the side of the first adapter 111 away from the second adapter 211.

[0064] When the support is in the unfolded or folded state, the first flange 716 can provide reverse support even if subjected to axial tension or impact load, preventing the positioning member or the adapter from being pulled out from the direction of the rotating shaft. The first flange 716 can also serve as an outer end protection ring, avoiding the exposure of the rotating pivot structure to the external environment and the influence of dust, moisture or impact, thereby enhancing the overall reliability of the assembly area.

[0065] In the embodiment, the second adapter 211 further comprises a third inner groove 2113, and the second boss 722 is located in the third inner groove 2113, and the diameter of the third inner groove 2113 is smaller than that of the second inner groove 1113.

[0066] The third inner groove 2113 added on the second adapter 211 is used to embed the second boss 722 in the assembly, thereby forming an inner and outer multi-layer embedded structure: the second boss 722 is in the third inner groove 2113, the first boss 713 is in the first inner groove 723, and the third boss 714 is in the second inner groove 1113. When the support is unfolded or folded, the second boss 722 rotates in the third inner groove 2113 with a smaller diameter, and the inner wall thereof forms a circumferential wrapping support for the boss, preventing the rotating pair from shaking or eccentricity.

[0067] In the embodiment, the second adapter 211 further comprises a fourth inner groove 2114, which is located on the side of the third inner groove 2113 away from the first adapter 111, and the end of the second positioning member 72 away from the first positioning member 71 is located in the fourth inner groove 2114.

[0068] The fourth inner groove 2114 is arranged near the outer end in the entire rotating axial direction; the outer end portion of the second positioning member 72 is embedded in the groove, thereby forming a new matching limiting area on the outermost side of the support, so that the second positioning member 72 is supported by the third inner groove 2113 on the inner side and contained by the fourth inner groove 2114 on the outer side in the rotating connection, and can be bidirectionally constrained in the radial and axial directions. After the foregoing structure is adopted, when the folding I-shaped support is in the unfolded state, the second positioning member 72 rotates in the fourth inner groove 2114, and a face contact thrust support is formed between the end face and the groove bottom face, which can bear the axial thrust force; when the support is folded or moved, the inner wall of the groove provides circumferential guidance and radial support, preventing the positioning member from eccentricity or shaking.

[0069] In the embodiment, the first pivot assembly further comprises a first bolt 73 and a first nut 74, the first positioning member 71 is provided with a first through hole 715 penetrating the first positioning member 71, the second positioning member 72 is provided with a second through hole 724 penetrating the second positioning member 72, and one end of the first bolt 73 is connected with the first nut 74 after penetrating the first through hole 715 and the second through hole 724.

[0070] The first through hole 715 and the second through hole 724 are respectively arranged on the first positioning member 71 and the second positioning member 72, penetrating the central regions of the two positioning members, allowing the bolt to penetrate axially, one end of the first bolt 73 is connected with the first nut 74 after penetrating the first through hole 715 and the second through hole 724, so that the two positioning members can be fixed by axial tightening of the bolt-nut after assembly is completed, thereby providing a controllable pre-tightening force while maintaining the rotating function.

[0071] In the embodiment, the first intermediate part 112 is provided with a clamping hook 1121 on the side opposite to the first adapter part 111, and the second intermediate part 212 is provided with a clamping groove 2121 on the side opposite to the second adapter part 211. When the first support 1 and the second support 2 are rotated to the unfolded state, the end of the clamping hook 1121 is embedded in the clamping groove 2121.

[0072] In the process of unfolding the folding support, the first support 1 and the second support 2 rotate around the rotation shaft. When rotated to a preset unfolding angle, the relative positions of the first intermediate part 112 and the second intermediate part 212 gradually align, at which time the clamping hook 1121 and the clamping groove 2121 naturally fit due to geometric guidance. After the end of the clamping hook 1121 enters the clamping groove 2121, the shape thereof and the edge of the clamping groove 2121 form an interlocking relationship, so that the support cannot be rotated back to the folded state by itself due to vibration or external force after being unfolded. By using the foregoing fitting structure, the support has the advantage of being stably fixed without additional locking in the unfolded state, and can be quickly folded by slightly pulling or rotating to remove the fitting under external force when being folded. In the embodiment, the locking action is automatically completed at the end of movement by the precise matching of the unfolding angle of the support and the position of the clamping groove 2121, thereby improving the convenience of use.

[0073] As shown in Figure 14 the second part 12 is provided with a mounting groove at one end facing the first part 11, and the first connecting part 113 is inserted into the mounting groove.

[0074] In the embodiment, the mounting groove is provided on the second part 12, so that the first connecting part 113 can be inserted and stably combined therewith, thereby realizing end alignment and structural reinforcement in the overall structure of the support. When assembled, the first connecting part 113 is inserted into the mounting groove along the axial direction of the second part 12, and the groove wall provides circumferential support to the inserted part.

[0075] In the embodiment, the second pivot assembly further includes a third positioning member 81 and a fourth positioning member 82. The third positioning member 81 is provided with a fourth boss 811, and the fourth boss 811 is provided with a fifth inner groove 8111. The fourth positioning member 82 is provided with a fifth boss 821, and at least a portion of the fifth boss 821 is located in the fifth inner groove 8111. The first support leg 3 includes a third adapter part 31, and the second support leg 4 includes a fourth adapter part 41. The third adapter part 31 and the fourth adapter part 41 are arranged in the direction of the rotation axes of both and are sleeved on the second pivot assembly.

[0076] As shown in Figure 15As shown, the relative arrangement of the third adapter 31 and the fourth adapter 41 in the embodiment is offset along the direction of their respective rotation axes, that is, there is a certain interval or stacking difference in the axial direction, which can avoid interference of the rotation structure of the two support legs, so that the left and right support legs can rotate around independent axes and be synchronously unfolded or folded through the second hinge assembly. The third adapter 31 and the fourth adapter 41 are connected with the third positioning member 81 and the fourth positioning member 82, respectively, and are installed in a sleeved manner on the second hinge assembly during assembly, forming a rotation pair that is independent of each other but coaxially stressed, so that a stable support angle can be formed after the support is unfolded, and the support can be smoothly and stably stored when folded.

[0077] In the embodiment, the hinge assembly further includes a second bolt 83 and a second nut 84, the third positioning member 81 is provided with a third through hole 812, the fourth positioning member 82 is provided with a fourth through hole 822, and one end of the second bolt 83 passes through the third through hole 812 and the fourth through hole 822 and is connected with the second nut 84.

[0078] The second bolt 83 passes through the third through hole 812 and the fourth through hole 822 along the direction of the rotation axis and is locked with the second nut 84, thereby axially connecting the third positioning member 81 and the fourth positioning member 82 as a whole, so as to form a controllable pre-tightening force at the folding connection of the support leg, eliminate the micro gap between the embedded parts, and prevent the rotation from loosening or shaking. Through the friction self-locking property of the threaded pair, the support leg can still be fastened and stabilized during repeated unfolding and folding, and will not be loosened due to vibration.

[0079] Embodiment 2 As shown in Figure 16 and Figure 17 The embodiment provides a double-head lamp, which includes a first lamp 9, a second lamp 10, and the folding I-shaped support frame described in embodiment 1. The first lamp 9 is installed on the first support 1, and the second lamp 10 is installed on the second support 2.

[0080] The embodiment utilizes the rotatable and foldable structure characteristics of the folding I-shaped support frame in embodiment 1, so that the double-head lamp can be compactly stored when not in use, and quickly unfolded to form a stable support and wide-angle lighting layout when in use. Since the first support 1 and the second support 2 can be relatively rotated through the adapter, the unfolded whole has an I-shaped structure, and the two lamps are located at the two ends of the structure, which can illuminate different directions or concentrate light when needed. Compared with the traditional welded fixed lamp stand, this scheme not only greatly reduces the volume and transportation cost, but also facilitates users to adjust the angle and illumination range of the lamp according to the working environment.

[0081] Embodiment 3 As shown in Figure 18The embodiment shown provides a folding I-shaped support frame storage method. The method is used for folding the folding I-shaped support frame described in embodiment 1, and the method comprises: S1: rotate the free ends of the first support leg 3 and the second support leg 4 to a mutual converging position in the direction close to the first support 1, so that the first support leg 3 and the second support leg 4 are stored under the first support 1; This step realizes the action of converging the support legs to the center by rotating the free ends of the first support leg 3 and the second support leg 4 to a mutual converging position in the direction close to the first support 1. This step can gradually converge the two support legs on the same side, so as to compress their space expansion angle to a planar attachment state, and finally store them under the first support 1. In this way, the opening angle of the support frame bottom is significantly reduced, the structure is initially formed into a foldable form, and mutual interference between the support legs is avoided.

[0082] S2: rotate the free ends of the third support leg 5 and the fourth support leg 6 to a mutual converging position in the direction close to the first support 1, so that the third support leg 5 and the fourth support leg 6 are stored under the second support 2; Similarly, this step makes the free ends of the two support legs guided to the bottom under the second support 2 and attached to each other by the inward rotation action, so that the support structure of the second support 2 is also changed from the expanded form to the parallel converging form. At this time, the four support legs are all stored under the corresponding support, and the lower half of the overall structure forms two groups of superimposed support units, which not only effectively reduces the overall occupied space, but also ensures the flatness of the support frame bottom in the converging state, providing space conditions for the subsequent folding of the main support.

[0083] S3: rotate the first support 1 and the second support 2 to a mutual parallel position in the direction close to each other.

[0084] Since the first support 1 and the second support 2 are connected by the pivot assembly, the rotation action is centered on the connecting shaft of the two supports. When the two supports are gradually rotated from the I-shaped expanded state to parallel to each other, the entire support structure realizes the final folded form. In this state, the lateral width and longitudinal height of the support are significantly reduced, and the overall structure is flattened, which can be directly placed, transported or packaged. The foregoing folding process is simple and convenient, and the user can complete the storage operation in a short time. The volume of the support after storage is significantly reduced, which is convenient for carrying and storage. After storage, the support legs and the main support are attached to each other in the folded state, the structure is stable, and it is not easy to shake.

[0085] Embodiment 4 As Figure 19 shown, the embodiment provides a folding I-shaped support frame unfolding method. The method is used for unfolding the folding I-shaped support frame described in embodiment 1, and the method comprises: S4: Turn the first support 1 and the second support 2 towards each other away from the position in a straight line; This step takes the pivot axis between the two supports as the rotation center, drives the first support 1 and the second support 2 to rotate around the axis until they are transitioned from the parallel folding state to the linear docking state. In this state, the entire main support forms a through straight support framework, providing a reference position for the subsequent support foot expansion. Through this expansion action, the central axis of the main structure is extended, thereby ensuring the overall geometric symmetry and force continuity of the I-shaped support.

[0086] S5: Turn the free ends of the first support foot 3 and the second support foot 4 away from the first support 1 to the position in a straight line; This step is guided by the rotating connectors of the support feet and the end of the first support 1, and the two support feet are symmetrically spread to the sides to form a T-shaped planar support structure with the bottom of the first support 1. At this time, a support straight line is formed between the free ends of the first support foot 3 and the second support foot 4, which is parallel to the ground, used to disperse vertical load and improve lateral stability.

[0087] S6: Turn the free ends of the third support foot 5 and the fourth support foot 6 away from the second support 2 to the position in a straight line.

[0088] This step completes the expansion of the support unit below the second support 2. The action process of the third and fourth support feet 6 is consistent with the previous step, and the rotation direction is opposite to that of the first and second support feet 4, so that a double-T-shaped support layout is formed. The free ends of the four support feet form a stable rectangular support plane, so that the entire I-shaped support frame has high anti-overturning ability and overall balance in the expanded state.

[0089] The above is only a specific embodiment of the present application, and those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be described here. It should be understood that the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A folding I-beam support frame, characterized by, The utility model relates to a support frame, including: A first support frame; A second support frame, one end of which is rotatably connected to one end of the first support frame; A first support leg, one end of which is rotatably connected to the end of the first support frame away from the second support frame, and the other end of which is a free end; A second support leg, one end of which is rotatably connected to the end of the first support frame away from the second support frame, and the other end of which is a free end; A third support leg, one end of which is rotatably connected to the end of the second support frame away from the first support frame, and the other end of which is a free end; A fourth support leg, one end of which is rotatably connected to the end of the second support frame away from the first support frame, and the other end of which is a free end; When the support frame is in an unfolded state, it has an H-shaped structure.

2. The folding I-joist support of claim 1, wherein, The first support frame includes a first component and a second component, one end of the first component is connected to one end of the second component, the first component includes a first adapter, a first intermediate part and a first connecting part, the first intermediate part is connected to the first adapter, the first connecting part is connected to one end of the first intermediate part away from the first adapter, and one end of the first connecting part away from the first intermediate part is connected to the first component.

3. The folding I-joist support bracket of claim 1, wherein, The second support frame includes a third component and a fourth component, one end of the third component is connected to one end of the fourth component, the third component includes a second adapter, a second intermediate part and a second connecting part, the second intermediate part is connected to the second adapter, the second connecting part is connected to one end of the second intermediate part away from the second adapter, and one end of the second connecting part away from the second intermediate part is connected to the second component.

4. The folding I-joist support of claim 3, wherein, The outer wall of the first adapter is a cylindrical surface, the outer wall of the second adapter is a cylindrical surface, the surface of the first intermediate part connected to the first adapter is a cylindrical surface matching the outer wall of the second adapter, and the surface of the second intermediate part connected to the second adapter is a cylindrical surface matching the outer wall of the second adapter.

5. The folding I-joist support of claim 4, wherein, The first adapter and the second adapter are stacked along the axis direction of the rotatable connection of the first support frame and the second support frame, the difference between the height of the first adapter and the first intermediate part is the thickness of the second adapter, the difference between the height of the second adapter and the first intermediate part is the thickness of the first adapter, the difference between the height of the first adapter and the first intermediate part is the thickness of the second adapter, and the difference between the height of the second adapter and the first intermediate part is the thickness of the first adapter.

6. The folding I-joist support of claim 4, wherein, The utility model also includes a first pivot assembly, the first pivot assembly includes a first positioning member and a second positioning member, the first positioning member and the second positioning member are stacked along the axis direction of the rotatable connection of the first support frame and the second support frame, the first positioning member is provided with a first cylindrical surface, the first adapter is provided with a first cylindrical inner wall, the first cylindrical inner wall is sleeved on the first cylindrical surface, the second adapter is provided with a third cylindrical inner wall, the second positioning member is provided with a second cylindrical surface, and the third cylindrical inner wall is sleeved on the second cylindrical surface.

7. The folding I-joist support of claim 6, wherein, The first adapter is provided with a first bottom plate, the second adapter is provided with a first top plate, the first bottom plate faces the first top plate, the first positioning member is provided with a first step surface, the second positioning member is provided with a second step surface, the first bottom plate and the second top plate are located between the first step surface and the second step surface, the first positioning member is provided with a first boss, the second positioning member is provided with a second boss, the end surface of the second boss facing the first adapter is a second step surface, the second boss is provided with a first inner groove, at least a part of the first boss is located in the first inner groove, the first positioning member comprises a third boss, the third boss is located on the side of the first boss away from the second positioning member, the diameter of the second boss is greater than the diameter of the first boss, the end surface of the second boss is a first step surface, the first adapter is further provided with a second inner groove, the third boss is located in the second inner groove, the side of the first intermediate part away from the first adapter is provided with a clamping hook, the side of the second intermediate part away from the second adapter is provided with a clamping groove, when the first support and the second support are rotated to the unfolded state, the end of the clamping hook is embedded in the clamping groove.

8. A double head lamp characterized in that, The folding I-shaped support frame comprises a first lamp, a second lamp and the folding I-shaped support frame according to any one of claims 1 to 7, the first lamp is mounted on the first support, and the second lamp is mounted on the second support.

9. A method of folding an I-beam support frame, characterized by, A method for folding the folding I-shaped support frame according to any one of claims 1 to 7, the method comprises: S1: rotating the free ends of the first support leg and the second support leg towards the first support to a position close to each other, so that the first support leg and the second support leg are stored below the first support; S2: rotating the free ends of the third support leg and the fourth support leg towards the first support to a position close to each other, so that the third support leg and the fourth support leg are stored below the second support; S3: rotating the first support and the second support towards each other to a position parallel to each other.

10. A method of deploying a folding I-beam support frame, comprising: A method for unfolding the folding I-shaped support frame according to any one of claims 1 to 7, the method comprises: S4: rotating the first support and the second support away from each other to a position on the same straight line; S5: rotating the free ends of the first support leg and the second support leg away from the first support to a position on the same straight line; S6: rotating the free ends of the third support leg and the fourth support leg away from the second support to a position on the same straight line.

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