Corner piece used in rapid building system

Abstract

A corner piece used in a rapid building system, comprising an upper end cover (1), a lower end cover (3), and a middle profile (2). The upper end cover (1) and the lower end cover (3) are mounted on two ends of the middle profile (2), and the surfaces of the upper end cover (1) and the lower end cover (3) are each at least provided with a first groove (1-4). One side of the middle profile (2) is provided with a second groove (2-5) in communication with the first groove (1-4).

Description

A corner piece for a rapid construction system Technical Field

[0001] The invention relates to the technical field of construction of exhibition, performance and advertising structures, and in particular to a corner piece used in a rapid construction system. Background Art

[0002] Existing modular components for building exhibition stands, stages, and advertising stands have the following disadvantages: 1) The materials used for the frames of the modular components are all wood, which can only be used once and cannot be recycled, wasting forest resources and having poor environmental protection; 2) The modular frames are connected by welding, gluing, or bolting, which not only takes a long time to disassemble and assemble, but also wastes a lot of manpower, material, and financial resources; 3) The above-mentioned connection methods between the modular frames have large installation errors, which may eventually lead to the failure to achieve the construction goal due to the large cumulative errors; 4) To form a complete construction system, the existing technologies all require first assembling multiple frames together with connectors, and then installing outer cover decorative panels on the frames. Disassembly also requires first removing the outer cover decorative panels and then disassembling the connected frames, which also results in a long time to disassemble and assemble, and low construction efficiency.

[0003] In response to this, Chinese patent [CN209099826U] provides a corner building module and construction system, including a corner profile having at least two grooves and cavities extending along the length of the corner profile, wherein the planes on which the bottoms of two adjacent grooves lie form an angle greater than 0 degrees and less than 180 degrees, and the grooves or cavities are provided with connectors for connecting the corner building module to adjacent building modules. The present invention also discloses a construction system, comprising a corner building module and a standard building module. The advantages of the present invention are: it can be recycled, is environmentally friendly, is quick and convenient to assemble and disassemble, has accurate installation and positioning with small errors, is simple to manufacture, has high construction efficiency, and has good continuity and aesthetics for the walls and ceiling of the exhibition stand. An analysis of the patent reveals that in order to achieve the turning of the wall or to connect more component modules, the patent requires continuous adjustment of the structure of the corner profile, which requires designers to expend a lot of labor. The production of the corner profile requires independent mold production, which increases production costs.

[0004] Therefore, a new type of corner piece for wall turning is needed at present.

[0005] Summary of the Invention

[0006] In order to solve the above-mentioned problems, the present invention is achieved as follows:

[0007] A corner piece for use in a rapid construction system, comprising an upper end cap, a lower end cap, and an intermediate profile;

[0008] The upper end cover and the lower end cover are installed at both ends of the intermediate profile;

[0009] At least one first groove is provided on the surface of the upper end cover and the lower end cover;

[0010] A second groove is provided on one side of the intermediate profile for connecting the card cloth.

[0011] Preferably, at least one of the positioning fixing pin, the positioning bolt member and the positioning bolt member is installed on the intermediate profile.

[0012] Preferably, at least one of a first profile support and a positioning and fixing pin lock is provided in the intermediate profile;

[0013] The first profile support is used to install the positioning bolt and the positioning bolt-containing member;

[0014] The positioning and fixing pin lock is provided with a first hole and a second hole which are interconnected and used for connecting the positioning and fixing pin of the building module;

[0015] The first hole is a circular hole, and the second hole is an elongated hole extending along the circumferential direction of the cross-section circular ring of the fixing pin locking member.

[0016] Preferably, the upper end cover is interference fitted with the lower end cover and the intermediate profile.

[0017] Preferably, the upper end cover and the lower end cover are both provided with a first through hole;

[0018] The first through hole is communicated with the intermediate profile.

[0019] Preferably, the surface of the intermediate profile is provided with at least two adjacent or opposite third grooves;

[0020] The third groove is provided with a first mounting hole, a second mounting hole, a third mounting hole and a second through hole;

[0021] The positioning bolt member is installed in the third groove through the first installation hole;

[0022] The positioning bolt is installed in the third groove adjacent to or opposite to the positioning bolt through another first installation hole;

[0023] The second through holes are provided at both ends of the intermediate profile, and the second through holes are surrounded by second mounting holes;

[0024] The third mounting hole is used to mount the positioning fixing pin.

[0025] Preferably, the bottoms of the upper end cover and the lower end cover are both provided with bosses and connecting blocks;

[0026] The connecting blocks are arranged on the four corners of the upper end cover and the lower end cover;

[0027] The boss is provided with at least two connecting holes corresponding to the second through holes and a fourth mounting hole corresponding to the second mounting hole. Bolts pass through the second mounting holes, the connecting holes and the fourth mounting holes to install and fix the upper end cover and the lower end cover to the end of the intermediate profile.

[0028] Preferably, the intermediate profile is further provided with a positioning lock and a positioning lock fixing piece;

[0029] The positioning lock includes a lock bolt that can be extended and retracted, a lock bolt receiving hollow tube and a spring;

[0030] The lock bolt includes a lock bolt rod and a positioning lock bolt head;

[0031] The locking bolt rod is sleeved on the spring and installed in the cavity of the locking bolt accommodating hollow tube;

[0032] One end of the locking bolt rod is connected to the positioning locking bolt head, and the other end is fixed with a pressure plate;

[0033] The inner wall of the locking bolt accommodating hollow tube has a pressing portion for pressing the spring;

[0034] The spring is pressed between the pressure plate and the pressing portion;

[0035] The locking bolt rod is provided with a pull rod at a position close to the positioning locking bolt head;

[0036] The end of the locking bolt accommodating hollow tube close to the positioning locking bolt head is provided with a first rod clamping groove and a second rod clamping groove extending along the length direction of the locking bolt accommodating hollow tube;

[0037] The depth of the first rod clamping groove is greater than the depth of the second rod clamping groove;

[0038] When the positioning lock bolt head presses against the end of the lock bolt receiving hollow tube, the pull rod is located in the first rod clamping groove; when the positioning lock bolt head is inserted into the second through hole, the pull rod is located in the second rod clamping groove;

[0039] The positioning lock fixing plate is provided with a through cavity;

[0040] The positioning lock bolt head is nested in the through cavity;

[0041] The through cavity corresponds to the second through hole;

[0042] A bolt passes through the second mounting hole to connect the positioning lock fixing plate and the intermediate profile.

[0043] When a positioning and fixing pin lock is provided in the intermediate profile, the intermediate profile further comprises a second profile support;

[0044] The positioning and fixing pin lock passes through the second profile support and is engaged in the first through hole.

[0045] Preferably, at least one end of the fixing pin locking member has a claw portion for driving the fixing pin locking member to rotate.

[0046] Preferably, a shaft-inside nylon component is fixedly provided inside the fixing pin lock component.

[0047] Preferably, the positioning bolt comprises a disc-shaped bolt head, a cylindrical plug-in bolt rod and a fixed bolt rod, and a positioning mounting plate;

[0048] One end of the plug-in bolt rod is connected to the disc-shaped bolt head, and the other end of the plug-in bolt rod is connected to the fixed bolt rod;

[0049] The positioning and mounting plate is fitted onto the intermediate profile;

[0050] The positioning mounting plate is provided with a plurality of first jacks;

[0051] The fixing bolt rod is connected to the first support member after passing through a first insertion hole and a first mounting hole in sequence, and the bolt is connected to the first support member after passing through the remaining first insertion holes and the first mounting holes in sequence;

[0052] The positioning bolt member includes a second insertion hole for inserting the bolt head portion and a third insertion hole for inserting the bolt rod portion;

[0053] The opening size of the third plug hole does not allow the plug head to pass through;

[0054] The positioning plug-containing member is a hollow tube, and the second insertion hole is the lumen of the hollow tube;

[0055] The third insertion hole is a strip-shaped hole formed on the wall of the hollow tube and extending longitudinally along the hollow tube;

[0056] One end of the third plug hole extends to the end of the hollow pipe;

[0057] The positioning plug-containing member is fitted into the intermediate profile;

[0058] A fourth plug hole is provided on the positioning bolt member;

[0059] The bolt passes through the first mounting hole, the fourth insertion hole and the intermediate profile in sequence and is connected to the first support member.

[0060] Preferably, the positioning fixing pin comprises a column head, a column stem and a mounting column stem;

[0061] The mast portion comprises a connected small-diameter mast and a large-diameter mast;

[0062] One end of the small diameter column is connected to the column head, and the other end is connected to the large diameter column;

[0063] The diameter of the small-diameter column is smaller than the diameter of the spherical column head, one end of the large-diameter column is connected to the small-diameter column, and the other end is detachably mounted on the third mounting hole;

[0064] The mounting column is connected to the third mounting hole.

[0065] Preferably, the upper end cover and the lower end cover are squares of equal size, and the side lengths of the upper end cover and the lower end cover are 59 mm to 65 mm.

[0066] Compared with the prior art, the present invention has the following beneficial effects:

[0067] 1) The corner pieces, positioning fixing pins and positioning fixing pin locks, positioning bolts, positioning bolt containers, and positioning locks used in a rapid construction module using the construction system of the present invention are preferably made of metal. All components can be reused, avoiding the waste of forest resources and being environmentally friendly.

[0068] 2) Since the connection between the corner piece and the building module only requires two steps: inserting the positioning fixing pin into the positioning fixing pin lock and rotating the positioning fixing pin lock, or the connection between the corner piece and the standard building module only requires one installation step: inserting the positioning bolt into the positioning bolt, or adding a positioning lock to insert into the lock hole to constitute two installation steps, compared with traditional bolt connection and welding, connection and disassembly are very convenient and quick, greatly saving manpower, material and financial resources.

[0069] 3) The corner pieces in the present invention are standard pieces, which greatly shortens the customization cycle and reduces the economic cost.

[0070] 4) Accurate installation and positioning can be achieved between corner pieces and building modules, as well as between two adjacent corner pieces, greatly reducing connection and installation errors.

[0071] 5) When the corner piece is combined with the building module, the positioning fixing pin, positioning bolt, positioning bolt-receiving member and positioning lock are all hidden in the space formed by the relative grooves of the corner profile and the building module profile. These connecting parts are not visible from the outside, which makes the overall aesthetics of the combination of the corner piece and the building module good.

[0072] 6) The production of corner pieces is simple, and the modular design greatly reduces the manufacturing cost.

[0073] 7) By providing the corner pieces of the present invention, it is possible to quickly and accurately achieve docking of building modules in different directions and between building modules and corner pieces on the profiles, greatly improving the continuity and aesthetics of the walls and ceilings of the booths.

[0074] 8) The corner pieces of the present invention can form right-angled turns, and the length and thickness of the building modules can be adjusted by connecting the corner pieces together, thus enriching the usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0076] FIG1 is a schematic structural diagram of an embodiment of the present invention;

[0077] FIG2 is a schematic diagram of an explosion structure of an embodiment of the present invention;

[0078] FIG3 is a side view of an embodiment of the present invention;

[0079] FIG4 is a schematic structural diagram of an upper end cover according to an embodiment of the present invention;

[0080] FIG5 is a schematic structural diagram of a positioning lock in the present invention;

[0081] FIG6 is a schematic structural diagram of a positioning lock fixing plate;

[0082] FIG7 is a schematic structural diagram of a positioning bolt;

[0083] FIG8 is a schematic structural diagram of a positioning plug-containing member;

[0084] Figure 9 is a schematic structural diagram of the positioning mounting plate;

[0085] FIG10 is a schematic structural diagram of the combination of the positioning bolt and the positioning bolt-containing member;

[0086] FIG11 is a schematic diagram of the structure of the corner piece connected to the building module in Example 1;

[0087] FIG12 is a schematic structural diagram of a corner member in Example 2;

[0088] Figure 13 is a schematic structural diagram of a positioning fixing pin;

[0089] Figure 14 is a schematic structural diagram of a positioning pin lock;

[0090] Figure 15 is a schematic diagram of the structure of the nylon part in the shaft;

[0091] FIG16 is a schematic structural diagram of a positioning and fixing pin lock member connected to a second profile support member;

[0092] Figure 17 is a schematic structural diagram of a limit ring;

[0093] FIG18 is a schematic structural diagram of the connection between the fixed positioning pin and the positioning pin lock;

[0094] FIG19 is a schematic structural diagram of a corner member in Example 3;

[0095] FIG20 is a schematic diagram of the structure of the connection between the corner piece and the building module in Example 3;

[0096] Figure 21 is a schematic structural diagram of Example 4;

[0097] FIG. 22 is a schematic structural diagram of the connection between the corner piece and the building module in Example 4.

[0098] In the above drawings, the figure numbers represent: 1. Upper end cover 1-1, connecting block 1-2, boss 1-2-1, fourth mounting hole 1-3, first through hole 1-4, first groove 2, intermediate profile 2-1, positioning and fixing pin lock 2-1-1, first hole 2-1-2, second hole 2-1-3, claw portion 2-1-4, nylon part in shaft 2-1-5, limiting ring 2-1-6, limiting slot 2-1-7, first limiting bolt 2-1-8, second profile support 2-1-8-1, second limiting bolt 2-1-8-2, third limiting bolt 2-2, positioning and fixing pin 2-2-1, column head 2-2-2, column rod 2-2-2-1, small diameter column rod 2-2-2-2, large diameter column rod 2-2-3, mounting column rod 2-3, positioning bolt 2-3-1, bolt head 2-3-2, bolt rod 2-3-3, positioning mounting plate 2-3-3-1, first socket 2-4, positioning bolt 2-4-1, second socket 2-4-2, third socket 2-4-3, fourth socket 2-5, second groove 2-6, third groove 2-6-1, first mounting hole 2-6-2, second mounting hole 2-6-3, third mounting hole 2-6-4, second through hole 2-7, positioning lock fixing plate 2-7-1, through cavity 2-8, first profile support 2-9, positioning lock 2-9-1, locking bolt 2-9-1-1, locking bolt rod 2-9-1-2, positioning locking bolt head 2-9-1-3, pressure plate 2-9-1-4, pulling rod 2-9-2, locking bolt accommodating hollow tube 2-9-2-1, first rod clamping groove 2-9-2-2, second rod clamping groove 2-9-3, spring 3, lower end cover DETAILED DESCRIPTION

[0099] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0100] Example 1

[0101] In a specific embodiment 1, as shown in Figures 1 and 2, a corner piece for a rapid construction system includes an upper end cover 1, a lower end cover 3 and an intermediate profile 2, and the upper end cover 1 and the lower end cover 3 are installed at both ends of the intermediate profile 2, wherein a first groove 1-42-5 is provided on the surface of the upper end cover 1 and the lower end cover 3, and a second groove 2-5 for connecting the card is provided on one side of the intermediate profile 2. In this embodiment, the height of the upper end cover 1 and the lower end cover 3 is 62 mm. Therefore, in this embodiment, the first groove 1-42-5 is a U-shaped groove.

[0102] The upper end cover 1 is interference-fitted with the lower end cover 3 and the intermediate profile 2. Both the upper end cover 1 and the lower end cover 3 are provided with a first through hole 1-3, which is connected to the intermediate profile 2. As shown in Figure 4, the bottom of the upper end cover 1 and the lower end cover 3 are provided with a boss 1-2 and a connecting block 1-1, wherein the connecting block 1-1 is provided at the four corners of the upper end cover 1 and the lower end cover 3. The boss 1-2 is provided in an octagonal shape, and the first through hole 1-3 is located inside the boss 1-2. Among them, four sides of the boss 1-2 are provided with connecting holes corresponding to the second through hole 2-6-4, and a fourth mounting hole 1-2-1 corresponding to the second mounting hole 2-6-2. Bolts pass through the second mounting hole 2-6-2 and the fourth mounting hole 1-2-1 to install and fix the upper end cover 1 and the lower end cover 3 to the end of the intermediate profile 2.

[0103] The positioning bolt member 2-4 is installed on one side of the intermediate profile 2, and the positioning bolt member 2-3 is installed on the side adjacent to or opposite to the positioning bolt member 2-4. In this embodiment, the positioning bolt member 2-3 is installed on the side adjacent to the positioning bolt member 2-4.

[0104] In this embodiment 1, only the first profile support member 2 - 8 is provided in the intermediate profile 2 , and the first profile support member 2 - 8 is used to install the positioning bolt member 2 - 3 and the positioning container bolt member 2 - 4 .

[0105] As shown in FIG3 , the surface of the intermediate profile 2 is provided with at least two adjacent or opposite third grooves 2 - 6 . In this embodiment, there are four third grooves 2 - 6 .

[0106] The third groove 2-6 is provided with a first mounting hole 2-6-1, a second mounting hole 2-6-2, a third mounting hole 2-6-3 and a second through hole 2-6-4. The positioning bolt member 2-4 is installed in the third groove 2-6 through a first mounting hole 2-6-1, and the positioning bolt member 2-3 is installed in the third groove 2-6 adjacent to or opposite to the positioning bolt member 2-4 through another first mounting hole 2-6-1. The second through holes 2-6-4 are opened at both ends of the intermediate profile 2, and the second through holes 2-6-4 are surrounded by the second mounting holes 2-6-2; the third mounting hole 2-6-3 is used for installing the positioning fixing pin 2-2.

[0107] As shown in FIG5 , the intermediate profile 2 further includes a positioning lock 2-9. In this embodiment, the positioning lock 2-9 adopts the positioning lock 2-9 in the patent [CN209099826U], including a lock bolt 2-9-1 that can be extended and retracted, a lock bolt receiving hollow tube 2-9-2 and a spring 2-9-3. The lock bolt 2-9-1 includes a lock bolt rod 2-9-1-1 and a positioning lock bolt head 2-9-1-2. The lock bolt rod 2-9-1-1 is sleeved on the spring 2-9-3 and installed. In the cavity of the hollow tube 2-9-2 for accommodating the lock bolt, one end of the lock bolt rod 2-9-1-1 is connected to the positioning lock bolt head 2-9-1-2, and the other end is fixed with a pressure plate 2-9-1-3. The inner wall of the hollow tube 2-9-2 for accommodating the lock bolt has a pressing portion (not marked in the figure) for pressing the spring 2-9-3. The spring 2-9-3 is pressed between the pressure plate 2-9-1-3 and the pressing portion. The lock bolt rod 2-9-1-1 is located near the positioning lock bolt head 2-9-1-2. A pull rod 2-9-1-4 is provided. A first rod clamping groove 2-9-2-1 and a second rod clamping groove 2-9-2-2 are provided at one end of the lock bolt accommodating hollow tube 2-9-2 close to the positioning lock bolt head 2-9-1-2. The first rod clamping groove 2-9-2-1 is deeper than the second rod clamping groove 2-9-2-2. When the positioning lock bolt head 2-9-1-2 presses against the end of the lock bolt accommodating hollow tube 2-9-2, The pull rod 2-9-1-4 is located in the first rod slot 2-9-2-1. When the positioning lock bolt head 2-9-1-2 is inserted into the second mounting hole 2-6-2 and the fourth mounting hole 1-2-1, the pull rod 2-9-1-4 is located in the second rod slot 2-9-2-2, and the pull rod 2-9-1-4 is partially located in the first through hole 1-3, flush with the upper end cover 1 or the lower end cover 3. The user can turn the pull rod 2-9-1-4 to achieve the connection between the corner piece and the building module.

[0108] As shown in Figure 6, a positioning lock fixing plate 2-7 is also provided on the intermediate profile 2. The positioning lock fixing plate 2-7 has a through cavity 2-7-1. The positioning lock bolt head 2-9-1-2 is nested in the through cavity 2-7-1. The through cavity 2-7-1 corresponds to the second through hole 2-6-4 and the connecting hole. The positioning lock fixing plate 2-7 fits the end of the intermediate profile 2 and is connected by bolts. At this time, the bolts pass through the second mounting hole 2-6-2 and the fourth mounting hole 1-2-1 to connect the positioning lock fixing plate 2-7, the intermediate profile 2 and the upper end cover 1 or the lower end cover 3.

[0109] As shown in Figure 7, the positioning bolt 2-3 includes a disc-shaped bolt head, a cylindrical plug-in bolt rod and a fixed bolt rod, and a positioning mounting plate 2-3-3. One end of the plug-in bolt rod is connected to the disc-shaped bolt head, and the other end of the plug-in bolt rod is connected to the fixed bolt rod. The positioning mounting plate 2-3-3 fits the intermediate profile 2. As shown in Figure 9, two first insertion holes 2-3-3-1 are opened on the positioning mounting plate 2-3-3. The fixed bolt rod passes through a first insertion hole 2-3-3-1 and a first mounting hole 2-6-1 in sequence and is connected to the first support member. The bolt passes through the remaining first insertion holes 2-3-3-1 and the first mounting hole 2-6-1 in sequence and is connected to the first support member.

[0110] As shown in FIG8 , the positioning plug-containing member 2-4 includes a second insertion hole 2-4-1 for the plug head 2-3-1 to be inserted and a third insertion hole 2-4-2 for the plug rod 2-3-2 to be inserted. The opening size of the third insertion hole 2-4-2 does not allow the plug head 2-3-1 to pass through. The positioning plug-containing member 2-4 is a hollow tube member. The second insertion hole 2-4-1 is the lumen of the hollow tube member. The third insertion hole 2-4-2 is a strip hole opened on the tube wall of the hollow tube member and extending longitudinally along the hollow tube member. The third insertion hole 2-4-2 is a strip hole opened on the tube wall of the hollow tube member and extending longitudinally along the hollow tube member. One end extends to the end of the hollow tube, the positioning bolt-containing member 2-4 fits the intermediate profile 2, and the positioning bolt-containing member 2-4 is provided with a fourth hole 2-4-3. The bolt passes through the first mounting hole 2-6-1 and the fourth hole 2-4-3 in sequence and is fixedly connected to the first support member. In this embodiment, the third hole 2-4-2 is provided at both ends of the positioning bolt-containing member 2-4, and can be installed in the upper and lower directions according to the user's usage. Compared with the method of only opening in one direction, this installation method is more flexible.

[0111] When using the corner piece of this embodiment to connect with the building module, first, the corner piece and a building module are staggered by a certain distance in the direction in which the positioning bolt 2-3 is inserted into the positioning receiving bolt 2-4, and then one side of the corner piece is abutted against one side of a building module component, and then the positioning bolt 2-3 is inserted into the positioning receiving bolt 2-4, as shown in Figure 10, to complete the connection between the corner piece and the building module component. In this embodiment 1, when the corner piece is used to make a wall turn, the other building module component is connected using the same method, that is, A 90° corner can be formed as shown in Figure 11. It should be noted that in this embodiment 1, the positioning bolt 2-3 is installed on the adjacent or opposite side of the positioning bolt-containing bolt 2-4, so when the positioning bolt 2-3 is installed on the opposite side of the positioning bolt-containing bolt 2-4, the corner piece can also extend the length of the module, and can also extend the length of the module according to user needs by connecting the corner pieces. The first groove 1-42-5 has a positioning function. When the two corner pieces are placed side by side, they can be positioned and aligned through the U-shaped groove.

[0112] After the corner piece and the building module are connected, the pulling rod 2-9-1-4 of the positioning lock 2-9 is pulled out from the first rod slot 2-9-2-1 and rotated a certain angle around the axis of the hollow tube 2-9-2 accommodated by the lock bolt, so that the pulling rod 2-9-1-4 is stuck in the second rod slot 2-9-2-2. At this time, the positioning lock bolt head 2-9-1-2 is inserted into the second mounting hole 2-6-2. Since the size of the second mounting hole 2-6-2 allows the positioning lock bolt head 2-9-1-2 to be inserted but does not allow the positioning lock bolt head 2-9-1-2 to move in the second mounting hole 2-6-2, the corner piece and the building module component are accurately installed and positioned in the insertion direction of the positioning bolt 2-3 into the positioning receiving bolt 2-4, reducing the error in connection and installation. In fact, this connection and installation process only requires two steps of inserting the positioning bolt 2-3 into the positioning receiving bolt 2-4 and inserting the positioning lock 2-9 into the lock hole. The installation process is very simple and quick. After the installation is completed, the user can choose to cover the entire product with soft decorative fabrics. By installing and embedding the soft decoration in the second groove 2-5, the overall appearance can be made more beautiful. After the product is assembled, the internal material will not be exposed, and the product integrity is improved.

[0113] The disassembly process is the opposite of the installation process. First, pull the pull rod 2-9-1-4 out of the second rod slot 2-9-2-2 and rotate it a certain angle around the axis of the hollow tube 2-9-2 accommodated by the lock bolt. Under the action of the restoring force of the spring 2-9-3, the pull rod 2-9-1-4 is clamped into the second rod slot 2-9-2-2. At this time, the positioning lock bolt head 2-9-1-2 is disengaged from the second mounting hole 2-6-2, and then the corner piece and the building module component are staggered along the direction in which the positioning bolt 2-3 is inserted into the positioning bolt 2-4, so that the positioning bolt 2-3 is detached from the positioning bolt 2-4, and the separation of the corner piece and the building module component is completed.

[0114] Example 2

[0115] In a specific embodiment 2, as shown in Figure 12, a corner piece for a rapid construction system includes an upper end cover 1, a lower end cover 3 and an intermediate profile 2, wherein the upper end cover 1 and the lower end cover 3 are installed at both ends of the intermediate profile 2, wherein a first groove 1-42-5 is provided on the surface of the upper end cover 1 and the lower end cover 3, and a second groove 2-5 connected to the first groove 1-42-5 is provided on one side of the intermediate profile 2.

[0116] The upper end cover 1 is interference fitted with the lower end cover 3 and the intermediate profile 2 . Both the upper end cover 1 and the lower end cover 3 are provided with a first through hole 1 - 3 , and the first through hole 1 - 3 is communicated with the intermediate profile 2 .

[0117] As shown in FIG16 , a positioning and fixing pin lock 2 - 1 , a first profile support 2 - 8 and a second profile support 2 - 1 - 8 are provided in the intermediate profile 2 . In this embodiment, the positioning and fixing pin lock 2 - 1 is a hollow tube with a cylindrical cross section.

[0118] Wherein, as shown in Figure 13, the positioning fixing pin 2-2 includes a column head 2-2-1, a column rod 2-2-2 and an installation column rod 2-2-3, the column rod 2-2-2 includes a connected small diameter column rod 2-2-2-1 and a large diameter column rod 2-2-2-2, one end of the small diameter column rod 2-2-2-1 is connected to the column head 2-2-1, and the other end is connected to the large diameter column rod 2-2-2-2, the diameter of the small diameter column rod 2-2-2-1 is smaller than the diameter of the spherical column head, one end of the large diameter column rod 2-2-2-2 is connected to the small diameter column rod 2-2-2-1, and the other end is detachably mounted on the third mounting hole 2-6-3. In this embodiment, the column head 2-2-1 is a spherical column head 2-2-1, and the installation column rod 2-2-3 is connected to the third mounting hole, and the positioning fixing pin is installed on the intermediate profile by connecting the installation column rod 2-2-3 with the third mounting hole 2-6-3.

[0119] As shown in Figure 14, the positioning and fixing pin lock 2-1 is provided with a first hole 2-1-1 and a second hole 2-1-2 which are interconnected and are used to connect the fixed positioning and fixing pin 2-2 of the external building module. The first hole 2-1-1 is a circular hole, and the second hole 2-1-2 is a long hole extending along the circumferential direction of the cross-sectional ring of the fixing pin lock. The opening size of the first hole 2-1-1 allows the column head 2-2-1 to pass through the first hole 2-1-1, and the opening size of the second hole 2-1-2 does not allow the column head 2-2-1 to pass through the second hole 2-1-2 but allows the column rod 2-2-2 to pass through the second hole 2-1-2.

[0120] The positioning and fixing pin lock 2-1 passes through the first profile support 2-8 and the second profile support 2-1-8 and is engaged in the first through hole 1-3. At least one end of the fixing pin lock has a claw portion 2-1-3 for driving the hollow tube to rotate 90 degrees around its tube axis.

[0121] A nylon part 2-1-4 is fixedly provided in the fixing pin lock, as shown in Figure 15. A strip groove for the small-diameter column rod 2-2-2-1 to enter is provided on one side of the nylon part 2-1-4. A groove that can form friction with the spherical column head 2-2-1 is provided on the surface of the nylon part 2-1-4 facing the axis of the circular hollow tube. The surface of the nylon part 2-1-4 facing away from the axis of the circular hollow tube has an arc shape that is adapted to the inner wall of the circular hollow tube. In order to facilitate the installation of the positioning fixing pin 2-2, a groove for convenient tool clamping is also provided on the large-diameter column rod 2-2-2-2. In addition, the positioning and fixing pin lock 2-1 also includes a limiting ring 2-1-5. As shown in Figure 17, the limiting ring 2-1-5 is fixedly connected to the second profile support 2-1-8. A limiting groove 2-1-6 extending along the circumference of the cross-section of the circular hollow tube is formed on the outer surface of the circular hollow tube. The inner circumference of the limiting ring 2-1-5 is inserted into the limiting groove 2-1-6. The outer circumference of the limiting ring 2-1-5 extends out of the limiting groove 2-1-6 and abuts against the second profile support 2-1-8. This prevents the circular hollow tube from moving in the axial direction relative to the first profile support 2-8. In addition, a first limiting bolt 2-1-7 is fixed to the positioning and fixing pin lock 2-1, and a second limiting bolt 2-1-8-1 and a third limiting bolt 2-1-8-2 are fixed to the second profile support 2-1-8. When the positioning and fixing pin lock 2-1 rotates clockwise around its axis by a certain angle, the first limiting bolt 2-1-7 abuts against the second limiting bolt 2-1-8-1 to prevent the circular hollow tube from further clockwise rotation. When the positioning and fixing pin lock 2-1 rotates counterclockwise around its axis by a certain angle, the first limiting bolt 2-1-7 abuts against the third limiting bolt 2-1-8-2 to prevent the positioning and fixing pin lock 2-1 from further counterclockwise rotation. This ensures that the positioning and fixing pin lock 2-1 rotates to the desired position without over-rotating, and prevents the positioning and fixing pin lock 2-1 from slipping out of the second through hole 2-6-4.

[0122] The positioning bolt member 2-4 is installed on one side of the intermediate profile 2, and the positioning bolt member 2-3 is installed on a side adjacent to or opposite to the positioning bolt member 2-4.

[0123] Two adjacent or opposite third grooves 2-6 are provided on the surface of the intermediate profile 2, and the third groove 2-6 is provided with a first mounting hole 2-6-1, a second mounting hole 2-6-2, a third mounting hole 2-6-3 and a second through hole 2-6-4. The positioning bolt member 2-4 is installed in the third groove 2-6 through a first mounting hole 2-6-1, and the positioning bolt member 2-3 is installed in the third groove 2-6 adjacent to or opposite to the positioning bolt member 2-4 through another first mounting hole 2-6-1. The second through hole 2-6-4 is opened at both ends of the intermediate profile 2, and the second mounting hole 2-6-2 is arranged around the second through hole 2-6-4. The third mounting hole 2-6-3 is used to install the positioning fixing pin 2-2. In this embodiment, the intermediate profile 2 is equipped with a positioning fixing pin 2-2.

[0124] When installing the corner piece and the building module in Example 2, align the positioning and fixing pin 2-2 in the corner piece with the third mounting hole 2-6-3 of the building module, insert the positioning and fixing pin 2-2 into the third mounting hole 2-6-3 of the building module, connect the positioning and fixing pin 2-2 with the positioning and fixing pin lock 2-1 in the building module, and the spherical column head 2-2-1 enters the first hole 2-1-1 on the circular hollow tube. A part of the small-diameter column rod 2-2-2-1 also enters the first hole 2-1-1, while the large-diameter column rod 2-2-2-2 does not enter the first hole 2-1-1. When the cylindrical tube is disengaged, a special tool (not shown) is inserted into the claw portion 2-1-3, the special tool is engaged with the claw portion 2-1-3, and the special tool is rotated 90 degrees, so that the circular hollow tube is also rotated 90 degrees around its axis. At this time, the small diameter column rod 2-2-2-1 enters the second hole 2-1-2, and the spherical column head 2-2-1 is stuck in the tube cavity of the circular hollow tube and cannot be disengaged. The nylon member 2-1-4 in the shaft is in frictional contact with the spherical column head 2-2-1 and is tightly pressed against it, preventing the cylindrical tube from rotating in the opposite direction and causing the column head 2-2-1 to disengage from the circular hollow tube, as shown in Figure 18. When disengaging, the above-mentioned reverse operation can be used to disengage the building module component from the corner piece, which is simple to operate. On the contrary, the positioning and fixing pins 2-2 can be removed, and the positioning and fixing pins 2-2 in the building module are connected to the positioning and fixing pin lock member 2-1 in the corner piece, and the same method can be used to achieve installation and disassembly.

[0125] In this embodiment 2, the positioning fixing pin 2-2 can be removed and connected to the building module using the positioning bolt 2-3 and the positioning accommodating bolt 2-4, and the usage method is diverse.

[0126] Example 3

[0127] In a specific embodiment 3, as shown in Figure 19, a corner piece for a rapid construction system includes an upper end cover 1, a lower end cover 3 and an intermediate profile 2, wherein the upper end cover 1 and the lower end cover 3 are installed at both ends of the intermediate profile 2, wherein two first grooves 1-42-5 are provided on the surfaces of the upper end cover 1 and the lower end cover 3, and a second groove 2-5 connected to the first groove 1-42-5 is provided on one side of the intermediate profile 2.

[0128] The upper end cover 1 is interference fitted with the lower end cover 3 and the intermediate profile 2 . Both the upper end cover 1 and the lower end cover 3 are provided with a first through hole 1 - 3 , and the first through hole 1 - 3 is communicated with the intermediate profile 2 .

[0129] The positioning bolt member 2-4 is installed on one side of the intermediate profile 2; the positioning bolt member 2-3 is installed on the side adjacent to or opposite to the positioning bolt member 2-4.

[0130] In this embodiment 3, only the first profile support member 2 - 8 is provided in the intermediate profile 2 , and the first profile support member 2 - 8 is used to install the positioning bolt member 2 - 3 and the positioning container bolt member 2 - 4 .

[0131] Two adjacent or opposite third grooves 2-6 are provided on the surface of the intermediate profile 2, and a first mounting hole 2-6-1, a second mounting hole 2-6-2, a third mounting hole 2-6-3 and a second through hole 2-6-4 are provided on the third groove 2-6. The positioning bolt member 2-4 is installed in the third groove 2-6 through a first mounting hole 2-6-1, and the positioning bolt member 2-3 is installed in the third groove 2-6 adjacent to or opposite to the positioning bolt member 2-4 through another first mounting hole 2-6-1. The second through hole 2-6-4 is opened at both ends of the intermediate profile 2, and the second mounting hole 2-6-2 is arranged around the second through hole 2-6-4; the third mounting hole 2-6-3 is used to install the positioning fixing pin 2-2.

[0132] The intermediate profile 2 also includes a positioning lock 2-9, which includes a lock bolt 2-9-1 that can be extended and retracted, a lock bolt receiving hollow tube 2-9-2 and a spring 2-9-3. The lock bolt 2-9-1 includes a lock bolt rod 2-9-1-1 and a positioning lock bolt head 2-9-1-2. The lock bolt rod 2-9-1-1 is sleeved on the spring 2-9-3 and installed in the tube cavity of the lock bolt receiving hollow tube 2-9-2. The lock bolt rod 2-9- One end of 1-1 is connected to the positioning lock bolt head 2-9-1-2, and the other end is fixed with a pressure plate 2-9-1-3. The inner wall of the lock bolt accommodating hollow tube 2-9-2 has a pressing portion for pressing the spring 2-9-3. The spring 2-9-3 is pressed between the pressure plate 2-9-1-3 and the pressing portion. The lock bolt rod 2-9-1-1 is provided with a pull rod 2-9-1-4 near the positioning lock bolt head 2-9-1-2. The end of the hollow tube 2-9-2 near the positioning lock bolt head 2-9-1-2 is provided with a first rod clamping groove 2-9-2-1 and a second rod clamping groove 2-9-2-2 extending along the length direction of the lock bolt receiving hollow tube 2-9-2. The depth of the first rod clamping groove 2-9-2-1 is greater than the depth of the second rod clamping groove 2-9-2-2. When the positioning lock bolt head 2-9-1-2 presses against the end of the lock bolt receiving hollow tube 2-9-2, the pull rod 2-9-1-4 is located in the first rod slot 2-9-2-1. When the positioning lock bolt head 2-9-1-2 is inserted into the second mounting hole 2-6-2, the pull rod 2-9-1-4 is located in the second rod slot 2-9-2-2, and the pull rod 2-9-1-4 is partially located in the first through hole 1-3, flush with the upper end cover 1 or the lower end cover 3. The user can turn the pull rod 2-9-1-4 to achieve the connection between the corner piece and the building module.

[0133] A positioning lock fixing plate 2-7 is also provided on the intermediate profile 2. The positioning lock fixing plate 2-7 has a through cavity 2-7-1. The positioning lock bolt head 2-9-1-2 is nested in the through cavity 2-7-1. The through cavity 2-7-1 corresponds to the second through hole 2-6-4. The positioning lock fixing plate 2-7 fits the end of the intermediate profile 2. The bolt passes through the second mounting hole 2-6-2 to connect the positioning lock fixing plate 2-7 and the intermediate profile 2.

[0134] The positioning bolt 2-3 includes a disc-shaped bolt head, a cylindrical plug-in bolt rod and a fixed bolt rod, and a positioning mounting plate 2-3-3. One end of the plug-in bolt rod is connected to the disc-shaped bolt head, and the other end of the plug-in bolt rod is connected to the fixed bolt rod. The positioning mounting plate 2-3-3 fits the intermediate profile 2. Two first insertion holes 2-3-3-1 are opened on the positioning mounting plate 2-3-3. The fixed bolt rod passes through a first insertion hole 2-3-3-1 and a first mounting hole 2-6-1 in sequence and is connected to the first support member. The bolt passes through the remaining first insertion holes 2-3-3-1 and the first mounting hole 2-6-1 in sequence and is connected to the first support member.

[0135] The positioning bolt-containing component 2-4 includes a second socket 2-4-1 for inserting the bolt head 2-3-1 and a third socket 2-4-2 for inserting the bolt rod 2-3-2. The opening size of the third socket 2-4-2 does not allow the bolt head 2-3-1 to pass through. The positioning bolt-containing component 2-4 is a hollow tube component. The second socket 2-4-1 is the tube cavity of the hollow tube component. The third socket 2-4-2 is a strip hole opened on the tube wall of the hollow tube component and extends longitudinally along the hollow tube component. One end of the third socket 2-4-2 extends to the end of the hollow tube component. The positioning bolt-containing component 2-4 fits the intermediate profile 2. The positioning bolt-containing component 2-4 is provided with a fourth socket 2-4-3. The bolt passes through the first mounting hole 2-6-1 and the fourth socket 2-4-3 in sequence and is fixedly connected to the first support component.

[0136] When using the corner piece in this embodiment to connect the building module, first, the corner piece and a building module are staggered by a certain distance in the direction in which the positioning bolt 2-3 is inserted into the positioning accommodating bolt 2-4, and then one side of the corner piece is abutted against one side of a building module component, and then the positioning bolt 2-3 is inserted into the positioning accommodating bolt 2-4 to complete the connection between the corner piece and the building module component. In this embodiment 1, when the corner piece is used to turn the wall, the other building module component is connected using the same method to form a 90° corner, as shown in Figure 20. It should be noted that in this embodiment 3, the positioning bolt 2-3 is installed on the adjacent or opposite side of the positioning accommodating bolt 2-4, so when the positioning bolt 2-3 is installed on the opposite side of the positioning accommodating bolt 2-4, the corner piece can also extend the length of the module, and can also extend the length of the module according to user needs by using the corner piece to connect the corner piece.

[0137] After the corner piece and the building module are connected, the pulling rod 2-9-1-4 of the positioning lock 2-9 is pulled out from the first rod slot 2-9-2-1 and rotated a certain angle around the axis of the hollow tube 2-9-2 accommodated by the lock bolt, so that the pulling rod 2-9-1-4 is stuck in the second rod slot 2-9-2-2. At this time, the positioning lock bolt head 2-9-1-2 is inserted into the second mounting hole 2-6-2. Since the size of the second mounting hole 2-6-2 allows the positioning lock bolt head 2-9-1-2 to be inserted but does not allow the positioning lock bolt head 2-9-1-2 to move in the second mounting hole 2-6-2, the corner piece and the building module component are accurately installed and positioned in the insertion direction of the positioning bolt 2-3 into the positioning receiving bolt 2-4, reducing the error in connection and installation. In fact, this connection and installation process only requires two steps of inserting the positioning bolt 2-3 into the positioning receiving bolt 2-4 and inserting the positioning lock 2-9 into the lock hole. The installation process is very simple and quick. After the installation is completed, the user can choose to use soft decorative fabrics to cover the entirety. By installing and embedding the soft decorations in the second grooves 2-5, the overall appearance can be made more beautiful.

[0138] The disassembly process is the opposite of the installation process. First, pull the pull rod 2-9-1-4 out of the second rod slot 2-9-2-2 and rotate it a certain angle around the axis of the hollow tube 2-9-2 accommodated by the lock bolt. Under the action of the restoring force of the spring 2-9-3, the pull rod 2-9-1-4 is clamped into the second rod slot 2-9-2-2. At this time, the positioning lock bolt head 2-9-1-2 is disengaged from the second mounting hole 2-6-2, and then the corner piece and the building module component are staggered along the direction in which the positioning bolt 2-3 is inserted into the positioning bolt 2-4, so that the positioning bolt 2-3 is detached from the positioning bolt 2-4, and the separation of the corner piece and the building module component is completed.

[0139] Example 4

[0140] In a specific embodiment 4, as shown in Figure 21, a corner piece for a rapid construction system includes an upper end cover 1, a lower end cover 3 and an intermediate profile 2, and the upper end cover 1 and the lower end cover 3 are installed at both ends of the intermediate profile 2, wherein the surfaces of the upper end cover 1 and the lower end cover 3 are provided with four first grooves 1-42-5, wherein the intermediate profile 2 is provided with a second groove 2-5 connected to the first groove 1-42-5 type groove for installing a cloth.

[0141] The upper end cover 1 is interference fitted with the lower end cover 3 and the intermediate profile 2 . Both the upper end cover 1 and the lower end cover 3 are provided with a first through hole 1 - 3 , and the first through hole 1 - 3 is communicated with the intermediate profile 2 .

[0142] The positioning bolt member 2-4 is installed on one side of the intermediate profile 2, and the positioning bolt member 2-3 is installed on the side adjacent to the positioning bolt member 2-4. In this embodiment 4, only the first profile support member 2-8 is provided in the intermediate profile 2, and the first profile support member 2-8 is used to install the positioning bolt member 2-3 and the positioning bolt member 2-4.

[0143] When using the corner piece of this embodiment to connect building modules, the corner piece and a building module are first staggered a certain distance apart in the direction in which the positioning bolt 2-3 is inserted into the positioning receiving bolt 2-4. Then, one side of the corner piece is brought into contact with one side of a building module component, and the positioning bolt 2-3 is inserted into the positioning receiving bolt 2-4, completing the connection between the corner piece and the building module component. In this embodiment 1, when using the corner piece to turn a wall, another building module component is connected using the same method to form a 90° corner. Using the same method, building modules can be installed on the remaining two sides of the corner piece, as shown in Figure 22. Alternatively, additional corner pieces can be connected to increase the height or expand the building modules to provide a wider range of use for the system formed by the building modules. When the corner piece is aligned vertically, the first grooves 1-42-5 of the upper and lower end caps 3 facilitate alignment. It should be noted that in this embodiment 4, the positioning bolt 2-3 is installed on the side adjacent to or opposite to the positioning accommodating bolt 2-4, so when the positioning bolt 2-3 is installed on the side opposite to the positioning accommodating bolt 2-4, the corner piece can also extend the length of the module, and can also extend the length of the module according to user needs by connecting the corner pieces with each other.

[0144] After the corner piece and the building module are connected, the pulling rod 2-9-1-4 of the positioning lock 2-9 is pulled out from the first rod slot 2-9-2-1 and rotated a certain angle around the axis of the hollow tube 2-9-2 accommodated by the lock bolt, so that the pulling rod 2-9-1-4 is stuck in the second rod slot 2-9-2-2. At this time, the positioning lock bolt head 2-9-1-2 is inserted into the second mounting hole 2-6-2. Since the size of the second mounting hole 2-6-2 allows the positioning lock bolt head 2-9-1-2 to be inserted but does not allow the positioning lock bolt head 2-9-1-2 to move in the second mounting hole 2-6-2, the corner piece and the building module component are accurately installed and positioned in the insertion direction of the positioning bolt 2-3 into the positioning receiving bolt 2-4, reducing the error in connection and installation. In fact, this connection and installation process only requires two steps of inserting the positioning bolt 2-3 into the positioning receiving bolt 2-4 and inserting the positioning lock 2-9 into the lock hole. The installation process is very simple and quick. After the installation is completed, the user can choose to use soft decorative fabrics to cover the entirety. By installing and embedding the soft decorations in the second grooves 2-5, the overall appearance can be made more beautiful.

[0145] The disassembly process is the opposite of the installation process. First, pull the pull rod 2-9-1-4 out of the second rod slot 2-9-2-2 and rotate it a certain angle around the axis of the hollow tube 2-9-2 accommodated by the lock bolt. Under the action of the restoring force of the spring 2-9-3, the pull rod 2-9-1-4 is clamped into the second rod slot 2-9-2-2. At this time, the positioning lock bolt head 2-9-1-2 is disengaged from the second mounting hole 2-6-2, and then the corner piece and the building module component are staggered along the direction in which the positioning bolt 2-3 is inserted into the positioning bolt 2-4, so that the positioning bolt 2-3 is detached from the positioning bolt 2-4, and the separation of the corner piece and the building module component is completed.

[0146] In addition to the situations mentioned in the above embodiments, in this application, the length of the intermediate profile 2 can also be adjusted, and the positioning lock 2-9 and the positioning pin lock are installed in the intermediate profile 2. The installation method is the same as the above embodiment, so no unnecessary details are given.

[0147] In a preferred embodiment, the upper end cover 1 and the lower end cover 3 are squares of equal size, and the side lengths of the upper end cover 1 and the lower end cover 3 are 59 mm to 65 mm.

Claims

1. A corner piece for use in a rapid construction system, characterized in that: It includes an upper end cover, a lower end cover and an intermediate profile; The upper end cover and the lower end cover are installed at both ends of the intermediate profile; At least one first groove is provided on the surface of the upper end cover and the lower end cover; A second groove is provided on one side of the intermediate profile for connecting the card cloth.

2. A corner piece for use in a rapid construction system according to claim 1, characterized in that: At least one of the positioning fixing pin, the positioning bolt-containing member and the positioning bolt is installed on the intermediate profile.

3. A corner piece for use in a rapid construction system according to claim 2, characterized in that: At least one of a first profile support and a positioning and fixing pin lock is arranged in the intermediate profile; The first profile support is used to install the positioning bolt and the positioning bolt-containing bolt; The positioning and fixing pin lock is provided with a first hole and a second hole which are interconnected and used for connecting the positioning and fixing pin of the building module; The first hole is a circular hole, and the second hole is an elongated hole extending along the circumferential direction of the cross-section circular ring of the fixing pin locking member.

4. A corner piece for use in a rapid construction system according to claim 1, characterized in that: The upper end cover is interference fitted with the lower end cover and the intermediate profile.

5. A corner piece for use in a rapid construction system according to claim 1, characterized in that: The upper end cover and the lower end cover are both provided with a first through hole; The first through hole is communicated with the intermediate profile.

6. A corner piece for use in a rapid construction system according to claim 3, characterized in that: The surface of the intermediate profile is provided with at least two adjacent or opposite third grooves; The third groove is provided with a first mounting hole, a second mounting hole, a third mounting hole and a second through hole; The positioning bolt member is installed in the third groove through the first installation hole; The positioning bolt is installed in the third groove adjacent to or opposite to the positioning bolt through another first installation hole; The second through holes are provided at two ends of the intermediate profile, and the second through holes are surrounded by second mounting holes; The third mounting hole is used for mounting the positioning fixing pin.

7. A corner piece for use in a rapid construction system according to any one of claims 1 to 6, characterized in that: The upper end cover and the lower end cover are both provided with bosses and connecting blocks at the bottom; The connecting blocks are arranged on four corners of the upper end cover and the lower end cover; The boss is provided with at least two connecting holes corresponding to the second through holes and a fourth mounting hole corresponding to the second mounting hole. Bolts pass through the second mounting holes, the connecting holes and the fourth mounting holes to install and fix the upper end cover and the lower end cover to the ends of the intermediate profile.

8. A corner piece for use in a rapid construction system according to claim 6, characterized in that: The intermediate profile is also provided with a positioning lock and a positioning lock fixing sheet; The positioning lock comprises a lock bolt which can be extended and retracted, a lock bolt receiving hollow tube and a spring; The lock bolt comprises a lock bolt rod and a positioning lock bolt head; The locking bolt rod is sleeved on the spring and installed in the tube cavity of the locking bolt accommodating hollow tube; One end of the locking bolt rod is connected to the positioning locking bolt head, and the other end is fixed with a pressing plate; The inner wall of the locking bolt accommodating hollow tube has a pressing portion for pressing the spring; The spring is pressed between the pressing plate and the pressing portion; The locking bolt rod is provided with a pull rod at a position close to the positioning locking bolt head; The end of the locking bolt accommodating hollow tube close to the positioning locking bolt head is provided with a first rod clamping groove and a second rod clamping groove extending along the length direction of the locking bolt accommodating hollow tube; The depth of the first rod clamping groove is greater than the depth of the second rod clamping groove; When the positioning lock bolt head presses against the end of the lock bolt accommodating hollow tube, the pull rod is located in the first rod clamping groove; when the positioning lock bolt head is inserted into the second through hole, the pull rod is located in the second rod clamping groove; The positioning lock fixing plate is provided with a through cavity; The positioning lock bolt head is nested in the through cavity; The through cavity corresponds to the second through hole; The bolt passes through the second mounting hole to connect the positioning lock fixing plate and the intermediate profile.

9. The corner piece used in a rapid construction system according to claim 3, characterized in that: When a positioning and fixing pin lock is provided in the intermediate profile, the intermediate profile further comprises a second profile support; The positioning and fixing pin lock passes through the second profile support and is engaged in the first through hole.

10. A corner piece for use in a rapid construction system according to claim 9, characterized in that: At least one end of the fixing pin lock has a claw portion for driving the fixing pin lock to rotate.

11. A corner piece for use in a rapid construction system according to claim 10, characterized in that: An inner shaft nylon piece is fixedly arranged inside the fixing pin lock piece.

12. A corner piece for use in a rapid construction system according to claim 2, characterized in that: The positioning bolt comprises a disc-shaped bolt head, a cylindrical plug-in bolt rod and a fixed bolt rod, and a positioning mounting plate; One end of the plug-in bolt rod is connected to the disc-shaped bolt head, and the other end of the plug-in bolt rod is connected to the fixed bolt rod; The positioning and mounting plate is fitted to the intermediate profile; The positioning and mounting plate is provided with a plurality of first jacks; The fixing bolt rod is connected to the first support member after passing through one of the first insertion holes and one of the first mounting holes in sequence, and the bolt is connected to the first support member after passing through the remaining first insertion holes and the first mounting holes in sequence; The positioning bolt-containing member comprises a second insertion hole for inserting the bolt head portion and a third insertion hole for inserting the bolt stem portion; The opening size of the third plug hole does not allow the bolt head to pass through; The positioning plug-containing member is a hollow tube, and the second plug hole is a lumen of the hollow tube; The third insertion hole is a strip-shaped hole opened on the tube wall of the hollow tube and extending longitudinally along the hollow tube; One end of the third plug hole extends to the end of the hollow pipe; The positioning plug-containing member fits the intermediate profile; The positioning bolt member is provided with a fourth plug hole; The bolt passes through the first mounting hole, the fourth plug hole and the intermediate profile in sequence and is connected to the first support member.

13. A corner piece for use in a rapid construction system according to claim 2, characterized in that: The positioning and fixing pin comprises a column head, a column rod portion and a mounting column rod; The column part comprises a small-diameter column and a large-diameter column connected to each other; One end of the small diameter column is connected to the column head, and the other end is connected to the large diameter column; The diameter of the small diameter column is smaller than the diameter of the spherical column head, one end of the large diameter column is connected to the small diameter column, and the other end is detachably mounted on the third mounting hole; The mounting column is connected to the third mounting hole.

14. A corner piece for use in a rapid construction system according to claim 5, characterized in that: The upper end cover and the lower end cover are squares of equal size, and the side lengths of the upper end cover and the lower end cover are 59 mm to 65 mm.

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