A rigid foldable closed pipe joint and a rigid foldable closed pipe assembly

Abstract

The present application discloses a rigid foldable closed pipe joint and a rigid foldable closed pipe assembly, which relate to the technical field of spatial foldable structures. The rigid foldable closed pipe joint comprises a fixed plate, a slider is linearly slidably connected to the fixed plate, an equilateral quadrilateral hinge is also arranged on the fixed plate, the opposite apex angles of the equilateral quadrilateral hinge are respectively connected to the fixed plate and the slider, and the diagonal lines of the two apex angles are consistent with the sliding direction of the slider, the equilateral quadrilateral hinge comprises axles connected in sequence, two adjacent axles are connected by a pin, each axle is rotatably connected to a connecting plate, and the connecting plate is connected to the rigid foldable closed pipe. When the rigid foldable closed pipe is folded or unfolded, the rigid foldable closed pipe joint can be connected to it, thereby improving the installation efficiency of the rigid foldable closed pipe.

Description

Technical Field

[0001] The present application relates to the technical field of spatial foldable structures, and in particular to a rigid foldable closed pipe joint and a rigid foldable closed pipe assembly. Background Art

[0002] A rigid foldable closed tube is a thin-walled composite rod used in the aerospace field. It can be folded and stored in a very small space. When it needs to be unfolded, it uses the elastic strain energy stored in the folding process to unfold itself and return to its initial structural shape. The rigid foldable closed tube needs to be folded and unfolded by a special device.

[0003] In the prior art, the joint is composed of a rigid part, and the connection position with the rod is in a locked and fixed state, which cannot be adjusted with the deformation of the pipe port, and can only achieve a fixed connection function. Therefore, when the rigid foldable closed tube is folded up along the axial direction, the end of the rod cannot be fully deformed, which affects its flattening and tightening, occupies a large space, and has low folding efficiency; on the contrary, if the rigid foldable closed tube is completely folded and then connected and fixed with the end fastening device, when it is unfolded along the axial direction, the end of the rigid foldable closed tube cannot be deformed due to the lock fixation, and cannot be restored to the original shape, which affects the use. Therefore, it is necessary to fully consider the use conditions of the rigid foldable closed tube for folding, unfolding and fixing, that is, the rigid foldable closed tube must be able to be completely folded, flattened and tightened, and the rigid foldable closed tube must be able to be effectively unfolded and restored to the initial state and locked and fixed to meet the use. Summary of the invention

[0004] The purpose of the present application is to provide a rigid foldable closed pipe joint and a rigid foldable closed pipe assembly. When the rigid foldable closed pipe is folded or unfolded, the rigid foldable closed pipe joint can be connected thereto, thereby improving the installation efficiency of the rigid foldable closed pipe.

[0005] The embodiment of the present application is implemented as follows:

[0006] A rigid foldable closed pipe joint comprises a fixed plate, a slider is linearly slidably connected to the fixed plate, an equilateral quadrilateral hinge is also provided on the fixed plate, the opposite vertex angles of the equilateral quadrilateral hinge are respectively connected to the fixed plate and the slider, and the diagonal lines of the two vertex angles are consistent with the sliding direction of the slider, the equilateral quadrilateral hinge comprises shaft rods connected in sequence, two adjacent shaft rods are connected by a pin shaft, each shaft rod is rotatably connected to a connecting plate, and the connecting plate is connected to the rigid foldable closed pipe.

[0007] Optionally, a groove is provided on the fixed plate, a slide rail is provided at the bottom of the groove, and the sliding block is slidably connected to the fixed plate via the slide rail.

[0008] Optionally, a slide adapter plate is further provided on the slider, and the equilateral quadrilateral hinge is connected to the slider via the slide adapter plate.

[0009] Optionally, the slide adapter plate is further provided with a latch, and the fixed plate is provided with a plurality of slots along the length direction of the slide rail, and the latch can pass through the slide adapter plate and be inserted into the slots.

[0010] Optionally, hinge ears are provided at both ends of the shaft rod, and the pin passes through the hinge ears on two adjacent shaft rods to enable the two adjacent shaft rods to be rotatably connected.

[0011] Optionally, the connecting plate comprises corresponding inner and outer plates, the inner plate or the outer plate is rotatably connected to the shaft, and the inner plate and the outer plate are connected to the end of the rigid foldable closed tube.

[0012] Optionally, a plurality of mounting holes are arranged on the fixing plate, and the plurality of mounting holes are arranged on both sides of the groove.

[0013] A rigid foldable closed tube assembly comprises a rigid foldable closed tube and a rigid foldable closed tube joint as described above, wherein the rigid foldable closed tube joint is arranged at the end of the rigid foldable closed tube.

[0014] Optionally, the rigid foldable closed tube is a tubular structure formed by connecting a plurality of single-layer annular units end to end, each single-layer annular unit is a prism with four sides, and both end faces of each single-layer annular unit are equilateral quadrilaterals.

[0015] Optionally, the rigid foldable closed pipe joints include two, and the two rigid foldable closed pipe joints are arranged oppositely at two ends of the rigid foldable closed pipe.

[0016] The beneficial effects of the embodiments of the present application include:

[0017] The rigid foldable closed pipe joint and the rigid foldable closed pipe assembly provided by the present application include a fixed plate, a slider is linearly slidably connected to the fixed plate, an equilateral quadrilateral hinge is also arranged on the fixed plate, the opposite vertex angles of the equilateral quadrilateral hinge are respectively connected to the fixed plate and the slider, and the diagonal of the two vertex angles is consistent with the sliding direction of the slider, so that the slider drives the equilateral quadrilateral hinge to move, the equilateral quadrilateral hinge includes shafts connected in sequence, two adjacent shafts are connected by a pin shaft, each shaft is rotatably connected to a connecting plate, the connecting plate is connected to the rigid foldable closed pipe, the connecting plate can follow the movement of the shaft and the connecting plate can rotate around the axis, so that the connecting plate can be connected to the rigid foldable closed pipe in different states, so as to improve the installation convenience and installation efficiency of the rigid foldable closed pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 One of the structural schematic diagrams of the rigid foldable closed pipe joint provided in the embodiment of the present application;

[0020] Figure 2 The second structural schematic diagram of the rigid foldable closed pipe joint provided in the embodiment of the present application;

[0021] Figure 3 A schematic diagram of the structure of a fixed plate in a rigid foldable closed pipe joint provided in an embodiment of the present application;

[0022] Figure 4 A schematic structural diagram of a rigid foldable closed tube assembly provided in an embodiment of the present application.

[0023] Icons: 100-rigid foldable closed pipe joint; 110-fixed plate; 111-groove; 112-slide rail; 113-slot hole; 114-mounting hole; 120-slider; 121-slide adapter plate; 122-latch pin; 130-equilateral quadrilateral hinge; 131-axis rod; 1311-hinge ear; 132-pin shaft; 133-connecting plate; 1331-inner plate; 1332-outer plate; 200-rigid foldable closed pipe assembly; 210-rigid foldable closed pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0026] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0027] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0028] Please refer to Figure 1 The present embodiment provides a rigid foldable closed pipe joint 100, including a fixed plate 110, on which a slider 120 is linearly slidably connected, and an equilateral quadrilateral hinge 130 is also provided on the fixed plate 110, and the opposite vertex angles of the equilateral quadrilateral hinge 130 are respectively connected to the fixed plate 110 and the slider 120, and the diagonal lines of the two vertex angles are consistent with the sliding direction of the slider 120, and the equilateral quadrilateral hinge 130 includes shafts 131 connected in sequence, and two adjacent shafts 131 are connected by a pin 132, and each shaft 131 is rotatably connected to a connecting plate 133, and the connecting plate 133 is connected to the rigid foldable closed pipe.

[0029] Specifically, the slider 120 slides linearly so that the pin 132 set on the slider 120 moves toward or away from the pin 132 set on the fixed plate 110 to change the angle between the two adjacent shafts 131 of the equilateral trapezoid hinge 130. When the pin 132 set on the slider 120 moves toward the pin 132 set on the fixed plate 110, another group of relatively arranged pins 132 move relatively away from each other. When the pin 132 set on the slider 120 moves away from the pin 132 set on the fixed plate 110, another group of relatively arranged pins 132 move closer to each other. The connecting plate 133 is rotatably connected to the shaft 131 so that the connecting plate 133 can rotate freely around the axis.

[0030] When the rigid foldable closed tube is folded for storage or unfolded for fixing, the angle between the two adjacent tube walls changes, and the angle between the tube wall and the mounting plane of the fixing plate 110 also changes. The equilateral quadrilateral hinge 130 is hinged by a pin 132, and the pin 132 is set at the top corner of the equilateral quadrilateral hinge 130. One of the opposite pins 132 is connected to the fixing plate 110, and the other is connected to the slider 120. The other oppositely set pins 132 are free to move to adapt to the change of the angle between the two adjacent tube walls. The connecting plate 133 is rotatably connected to the shaft 131 so that the connecting plate 133 It can rotate freely around the axis to adapt to the change of the angle between the tube wall and the installation plane of the fixed plate 110. When the rigid foldable closed tube is installed on the rigid foldable closed tube joint 100, the rigid foldable closed tube joint 100 can adapt to the expanded state or folded state of the rigid foldable closed tube. Therefore, the rigid foldable closed tube joint 100 can be installed when the rigid foldable closed tube is in the folded state. After unfolding, the rigid foldable closed tube can be fixed at a specific position through the rigid foldable closed tube joint 100 to improve the installation efficiency of the rigid foldable closed tube.

[0031] The rigid foldable closed pipe joint 100 provided in the present application includes a fixed plate 110, on which a slider 120 is linearly slidably connected, and an equilateral quadrilateral hinge 130 is also provided on the fixed plate 110, and the opposite vertex angles of the equilateral quadrilateral hinge 130 are respectively connected to the fixed plate 110 and the slider 120, and the diagonal of the two vertex angles is consistent with the sliding direction of the slider 120, so that the slider 120 drives the equilateral quadrilateral hinge 130 to move, and the equilateral quadrilateral hinge 130 includes shafts 131 connected in sequence, and two adjacent shafts 131 are connected by a pin 132, and each shaft 131 is rotatably connected with a connecting plate 133, and the connecting plate 133 is connected to the rigid foldable closed pipe, and the connecting plate 133 can follow the movement of the shaft 131 and the connecting plate 133 can rotate around the axis, so that the connecting plate 133 can be connected to the rigid foldable closed pipe in different states, so as to improve the installation convenience and installation efficiency of the rigid foldable closed pipe.

[0032] In a feasible embodiment of the present application, Figure 1 and Figure 3 As shown, a groove 111 is provided on the fixing plate 110 , a slide rail 112 is provided at the bottom of the groove 111 , and the slider 120 is slidably connected to the fixing plate 110 via the slide rail 112 .

[0033] Specifically, the slide rail 112 is set at the bottom of the groove 111 so that the plane formed by the equilateral quadrilateral hinge 130 is parallel to the installation plane of the fixed plate 110 to ensure the connection stability between the equilateral quadrilateral hinge 130 and the fixed plate 110 and the slider 120. The slider 120 slides along the length direction of the slide rail 112, and a pin 132 of the equilateral quadrilateral hinge 130 is connected to the slider 120 so that when the slider 120 slides, the equilateral quadrilateral hinge 130 can follow the movement, so that when the rigid foldable closed tube is in a folded or unfolded state, the equilateral quadrilateral hinge 130 can adapt to it.

[0034] In a feasible embodiment of the present application, Figure 2 As shown, a slide adapter plate 121 is also provided on the slider 120 , and the equilateral quadrilateral hinge 130 is connected to the slider 120 via the slide adapter plate 121 .

[0035] Specifically, the slide adapter plate 121 and the slider 120 are connected by threaded fastening parts so that the slide adapter plate 121 slides with the slider 120, and a pin shaft 132 of the equilateral quadrilateral hinge 130 is connected to the slide adapter plate 121, so that when the slide adapter plate 121 slides, the equilateral quadrilateral hinge 130 can follow the movement, so that when the rigid foldable closed tube is in a folded or unfolded state, the equilateral quadrilateral hinge 130 can adapt to it.

[0036] In a feasible embodiment of the present application, Figure 2 and Figure 3 As shown, a latch 122 is also provided on the slide adapter plate 121 , and a plurality of slots 113 are provided on the fixed plate 110 along the length direction of the slide rail 112 . The latch 122 can pass through the slide adapter plate 121 and be inserted into the slots 113 .

[0037] Specifically, a plurality of slots 113 are provided on the fixed plate 110 so that after the equilateral quadrilateral hinge 130 moves to a suitable position following the rigid foldable closed tube, the relative positions of the slide adapter plate 121 and the fixed plate 110 are fixed by means of the latch 122 so that the shape of the equilateral quadrilateral hinge 130 is fixed, thereby ensuring that the rigid foldable closed tube can be stably in a folded state or an unfolded state.

[0038] In a feasible embodiment of the present application, Figure 2 As shown, hinge ears 1311 are provided at both ends of the shaft rod 131, and the pin 132 passes through the hinge ears 1311 on two adjacent shaft rods 131, so that the two adjacent shaft rods 131 are rotatably connected.

[0039] Specifically, the shaft rod 131 includes a connecting rod and hinge ears 1311 arranged at both ends of the connecting rod. The hinge ears 1311 are arranged in a flat shape to improve the stability of the connection between the two adjacent shaft rods 131. The hinge ears 1311 are provided with connecting holes. The hinge ears 1311 on the two adjacent shaft rods 131 are stacked, and the connecting holes on the two hinge ears 1311 are aligned. The pin shaft 132 passes through the two corresponding connecting holes. The pin shaft 132 is rotatably connected with the hinge ears 1311 so that the two adjacent shaft rods 131 are rotatably connected.

[0040] In a feasible embodiment of the present application, Figure 1 As shown, the connecting plate 133 includes a corresponding inner plate 1331 and an outer plate 1332 , the inner plate 1331 or the outer plate 1332 is rotatably connected to the shaft 131 , and the inner plate 1331 and the outer plate 1332 are connected to the end of the rigid foldable closed tube.

[0041] Specifically, the outer plate 1332 abuts against the outer wall of the rigid foldable closed tube, and the inner plate 1331 abuts against the inner wall of the rigid foldable closed tube. The fasteners sequentially pass through the outer plate 1332, the rigid foldable closed tube and the inner plate 1331 to fix the rigid foldable closed tube and the connecting plate 133. The inner plate 1331 and the outer plate 1332 are fixedly connected to the rigid foldable closed tube to enhance the connection strength between the rigid foldable closed tube and the rigid foldable closed tube joint 100. The inner plate 1331 or the outer plate 1332 is rotatably connected to the shaft 131 so that the rigid foldable closed tube can rotate freely.

[0042] In a feasible embodiment of the present application, Figure 3 As shown, a plurality of mounting holes 114 are disposed on the fixing plate 110 , and the plurality of mounting holes 114 are arranged on both sides of the groove 111 .

[0043] Specifically, the rigid foldable closed pipe joint 100 is installed when the rigid foldable closed pipe is in a folded state. After unfolding, the rigid foldable closed pipe is fixed at a preset position through the mounting holes 114 on the fixing plate 110, thereby improving the installation efficiency of the rigid foldable closed pipe. A plurality of mounting holes 114 are arranged on both sides of the groove 111 to enhance the installation stability of the rigid foldable closed pipe joint 100, thereby ensuring the installation stability of the rigid foldable closed pipe.

[0044] Please refer to Figure 4 The embodiment of the present application also discloses a rigid foldable closed tube assembly 200, including a rigid foldable closed tube 210 and the rigid foldable closed tube joint 100 in the aforementioned embodiment, and the rigid foldable closed tube joint 100 is arranged at the end of the rigid foldable closed tube 210.

[0045] Specifically, the rigid foldable closed tube 210 is a tubular structure formed by connecting multiple single-layer annular units end to end, each single-layer annular unit is a prism with four sides, and both end faces of each single-layer annular unit are equilateral quadrilaterals. The rigid foldable closed tube 210 has a compressed folded state and an unfolded support state. The rigid foldable closed tube 210 can be folded and stored in a very small space for easy carrying and transportation. When it needs to be unfolded, it uses the elastic strain energy stored in the folding process to unfold itself and restore to the initial structural shape.

[0046] Further, such as Figure 4 As shown, the rigid foldable closed pipe joint 100 includes two rigid foldable closed pipe joints 100, which are relatively arranged at the two ends of the rigid foldable closed pipe 210. The rigid foldable closed pipe joint 100 is connected to the rigid foldable closed pipe 210. The rigid foldable closed pipe joint 100 can adapt to the folding or unfolding state of the rigid foldable closed pipe 210. The rigid foldable closed pipe joints 100 are arranged at both ends of the rigid foldable closed pipe to improve the installation and folding efficiency of the rigid foldable closed pipe 210.

[0047] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rigid foldable closed pipe joint, characterized in that: It includes a fixed plate, a slider is linearly slidably connected to the fixed plate, an equilateral quadrilateral hinge is also provided on the fixed plate, the opposite vertex angles of the equilateral quadrilateral hinge are respectively connected to the fixed plate and the slider, and the diagonal lines of the two vertex angles are consistent with the sliding direction of the slider, the equilateral quadrilateral hinge includes shafts connected in sequence, two adjacent shafts are connected by a pin, each shaft is rotatably connected to a connecting plate, and the connecting plate is connected to a rigid foldable closed tube; The fixing plate is provided with a groove, the bottom of the groove is provided with a slide rail, and the slide block is slidably connected with the fixing plate through the slide rail; The slider is also provided with a slide adapter plate, and the equilateral quadrilateral hinge is connected to the slider via the slide adapter plate; The slide adapter plate is also provided with a latch, and the fixed plate is provided with a plurality of slots along the length direction of the slide rail, and the latch can pass through the slide adapter plate and be inserted into the slots; The connecting plate comprises a corresponding inner plate and outer plate, wherein the inner plate or the outer plate is rotatably connected to the shaft, and the inner plate and the outer plate are connected to the end of the rigid foldable closed tube.

2. The rigid foldable closed pipe joint according to claim 1, characterized in that: Both ends of the shaft rod are provided with hinge ears, and the pin shaft passes through the hinge ears on two adjacent shaft rods, so that the two adjacent shaft rods are rotatably connected.

3. The rigid foldable closed pipe joint according to claim 1, characterized in that: The fixing plate is provided with a plurality of mounting holes, and the plurality of mounting holes are arranged on both sides of the groove.

4. A rigid foldable closed tube assembly, characterized in that: It comprises a rigid foldable closed tube and a rigid foldable closed tube joint as claimed in any one of claims 1 to 3, wherein the rigid foldable closed tube joint is arranged at the end of the rigid foldable closed tube.

5. The rigid foldable closure tube assembly according to claim 4, characterized in that: The rigid foldable closed tube is a tubular structure formed by connecting a plurality of single-layer annular units end to end, each of which is a prism with four sides, and both end faces of each single-layer annular unit are equilateral quadrilaterals.

6. The rigid foldable closure tube assembly according to claim 4, characterized in that: The rigid foldable closed pipe joints include two, and the two rigid foldable closed pipe joints are arranged oppositely at two ends of the rigid foldable closed pipe.

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