Special-shaped metal roof structure with drainage device and construction method of special-shaped metal roof structure

By introducing a limiting structure consisting of main purlins, gutter joists, and inclined mesh panels into the irregular metal roof structure, the problems of impurity accumulation and cleaning difficulties in the drainage system of irregular roofs are solved, achieving smooth drainage and reduced maintenance costs.

CN121473519APending Publication Date: 2026-02-06CHINA CONSTR SECOND BUREAU DECORATION ENG CO
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Patent Information

Application Number
CN202511692028.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-18
Publication Date
2026-02-06

AI Technical Summary

Technical Problem

Existing drainage systems for irregularly shaped roofs are prone to accumulating dust and impurities in strong winds, making them difficult to clean. They are also prone to water accumulation during heavy rainfall, posing safety hazards and incurring high maintenance costs.

Method used

The system uses main purlins and gutter joists welded to the inner cavity of irregular roofs, combined with stainless steel drainage channels, inclined mesh panels, hooks, and limiting structures. The design of the inclined mesh panels and the limiting structures enable the blocking and easy removal of impurities, and it works in conjunction with siphon rainwater hoppers for drainage.

Benefits of technology

It enables smooth drainage of irregularly shaped metal roofs, reduces the accumulation of impurities, lowers maintenance difficulty and cost, and improves safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a special-shaped metal roof structure provided with a drainage device and a construction method of the special-shaped metal roof structure. The special-shaped metal roof structure provided with the drainage device comprises a main purline welded to an inner cavity of a special-shaped roof. A gutter keel is welded to the special-shaped roof through a main purline, and the gutter keel is fixedly connected with a stainless steel drainage groove through bolts. Before the stainless steel drainage groove is assembled in an inner cavity of the gutter keel, the position of an inclined net plate is planned and determined, and then the positions of a limiting connecting strip and a positioning piece are aligned and fixed; then, after the siphon roof drain is installed in the inner cavity of the stainless steel drainage tank, the inclined net plate is installed in the inner cavity of the stainless steel drainage tank, foreign matter and impurities falling into the inner cavity of the stainless steel drainage tank can be shielded, meanwhile, the inclined net plate can be conveniently detached through the limiting structure, and the practicability is high. And impurities in the inner cavity of the stainless steel drainage tank can be conveniently removed, so that the drainage of the inner cavity of the stainless steel drainage tank is smoother.
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Description

Technical Field

[0001] This invention belongs to the field of basic building technology, and in particular relates to an irregularly shaped metal roof structure with a drainage device, and a construction method for the irregularly shaped metal roof structure with a drainage device. Background Technology

[0002] Airport terminals are typically designed as "multi-functional complex spaces," encompassing not only passenger waiting areas, security checkpoints, and commercial and leisure areas, but also various functional zones such as offices, operational support, and equipment maintenance. To achieve the organic integration of these different functional modules within the same building space, terminal roofs often employ irregular or irregular structural forms. However, the design of irregular roofs also presents challenges in terms of drainage systems. Due to the complex roof structure, rainwater collection paths are often uneven, making it difficult for conventional roof drainage methods to ensure smooth and concentrated drainage. Therefore, current drainage designs for irregular roofs often employ stainless steel gutters combined with siphon drainage systems to achieve rapid drainage of roof water.

[0003] Although such systems have been applied in engineering practice, some significant shortcomings remain. First, during daily use, especially in environments with high air circulation, dust, fallen leaves, and other larger airborne particles can easily enter the stainless steel drainage gutters with rainwater. These impurities often accumulate at the bottom of the gutters' inner cavity. Second, under severe weather conditions such as heavy rainfall, the problem of poor drainage becomes more pronounced, potentially leading to water accumulation on the roof and even causing localized leaks or safety hazards in the roof structure. Third, cleaning and maintenance are also quite difficult. Gutters are typically located high on the roof, and manual cleaning requires specialized equipment, which is time-consuming, labor-intensive, and costly to maintain. Summary of the Invention

[0004] The purpose of this invention is to provide an irregularly shaped metal roof structure with a drainage device and its construction method, so as to solve the problems that although the existing irregularly shaped roof drainage system can basically meet the use needs of airport terminals, it still faces problems such as insufficient drainage, difficulty in cleaning up debris accumulation, high maintenance costs, and potential safety risks.

[0005] The technical solution of this invention to solve the above-mentioned technical problems is as follows: A non-circular metal roof structure equipped with a drainage device includes main purlins welded to the inner cavity of the non-circular roof; the non-circular roof is connected to a gutter keel welded to the main purlins, and the gutter keel is fixedly connected to a stainless steel drainage channel by bolts; a limiting connecting strip is welded to the front side of the stainless steel drainage channel; an inclined mesh plate is slidably connected to the inner cavity of the stainless steel drainage channel; a hook is welded to the front side of the inclined mesh plate; the clamping part of the hook is connected to the upper end of the limiting connecting strip; the stainless steel... A positioning component is welded to one side of the drainage trough's inner cavity, and a connector is welded to one side of the inclined mesh plate. The inner cavity of the connector is provided with a limiting structure. The limiting structure includes a thickened plate welded to the inner cavity of the connector. A circular hole is opened on the surface of the thickened plate, and a circular tube is welded to the inner cavity of the circular hole. A circular ring is slidably connected to the inner cavity of the circular tube, and a spring is welded between the circular ring and the bottom of the circular tube. A ball is rotatably connected to the inner cavity of the circular ring, and a positioning hole is opened in the inner cavity of the positioning component. The surface of the ball is rotatably connected to the inner cavity of the positioning hole.

[0006] The present invention provides a shaped metal roof structure with a drainage device as described above, further comprising: two guide grooves formed on the surface of the thickened sheet, and the surface of the limiting strip being slidably connected to the inner cavity of the guide grooves.

[0007] The irregular metal roof structure with drainage device described above further includes: a profiled steel sheet fixedly connected to the top of the main purlin by bolts, and a liner purlin fixedly connected to the top of the profiled steel sheet by bolts.

[0008] The irregular metal roof structure with drainage device described above is further provided by the present invention: a foam glass insulation board is fixedly connected to the top of the purlin by bolts, a waterproof membrane is provided on the top of the foam glass insulation board, and sound-absorbing cotton is provided on the top of the waterproof membrane.

[0009] The irregular metal roof structure with drainage device described above is further provided by the present invention: a roof panel is provided on the top of the sound-absorbing cotton, and the roof panel is fixedly connected to the foam glass insulation board by bolts passing through the waterproof membrane and the sound-absorbing cotton; a rubber sealing gasket is provided between the end of the bolt and the upper surface of the roof panel, and the waterproof membrane and the bolt form a sealed structure.

[0010] The irregular metal roof structure with drainage device described above is further provided by the present invention in that: a solid plate is welded to the surface of the inclined mesh plate, a siphon rainwater bucket is installed in the inner cavity of the stainless steel drainage channel, and a limit strip is welded to the inner cavity of the positioning member.

[0011] The irregular metal roof structure with drainage device described above is further characterized by the following: the mesh diameter of the inclined mesh plate gradually decreases from the higher position to the lower position, and the mesh density at the lower position is greater than the mesh density at the higher position.

[0012] This invention also provides a construction method for an irregularly shaped metal roof structure equipped with a drainage device. Before assembling the stainless steel drainage channel into the inner cavity of the gutter keel, the user plans and determines the position of the inclined mesh plate, and then locates and fixes the position of the limiting connecting strip and the positioning component. Subsequently, after installing the siphon rainwater hopper into the inner cavity of the stainless steel drainage channel, the inclined mesh plate is installed into the inner cavity of the stainless steel drainage channel, thereby fixing the inclined mesh plate and the stainless steel drainage channel. Then, the surface of the hook is slid against the inner wall of the stainless steel drainage channel until the inner cavity of the hook engages with the surface of the limiting connecting strip, thereby fixing the inclined mesh plate into the inner cavity of the stainless steel drainage channel. Preferably, during the process of installing the inclined mesh plate into the inner cavity of the stainless steel drainage channel, the connector is first fastened into the inner cavity of the positioning component. At this time, the surface of the ball will roll against the inner wall of the positioning component under the support of the ring and the spring. When the ball rolls to the position of the positioning hole, the spring's rebound force pushes the ball into the inner cavity of the positioning hole, thereby achieving a positioning effect between the connector and the positioning component.

[0013] The beneficial effects of this invention are: This invention plans and determines the position of the inclined mesh plate before assembling the stainless steel drainage channel into the inner cavity of the gutter keel. Then, it accurately locates and fixes the positions of the limiting connecting strip and the positioning component. After installing the siphon rainwater hopper into the inner cavity of the stainless steel drainage channel, the inclined mesh plate is then installed. During the installation of the inclined mesh plate, the connecting component is preferentially engaged with the inner cavity of the positioning component. At this time, the limiting structure fixes the inclined mesh plate and the stainless steel drainage channel, thus blocking foreign objects and impurities falling into the inner cavity of the stainless steel drainage channel. Simultaneously, the limiting structure facilitates the removal of the inclined mesh plate, thereby facilitating the removal of impurities from the inner cavity of the stainless steel drainage channel, resulting in smoother drainage. Attached Figure Description

[0014] The advantages of the present invention, both above and / or other aspects, will become clearer and more readily understood through the following detailed description taken in conjunction with the accompanying drawings, which are merely illustrative and do not limit the invention, wherein: Figure 1 This is a front view schematic diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of a metal roof according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a metal roof according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a gutter keel according to an embodiment of the present invention; Figure 5 This is a schematic diagram of a limiting structure according to an embodiment of the present invention; Figure 6 This is one embodiment of the present invention. Figure 4 A magnified view of a portion of point A in the middle; Figure 7 This is one embodiment of the present invention. Figure 5 A magnified view of point B in the middle.

[0015] The attached diagram lists the components represented by each number as follows: 1. Irregular roof, 2. Main purlin, 3. Gutter keel, 4. Stainless steel drainage channel, 5. Limiting connecting strip, 6. Slanted mesh panel, 7. Hook, 8. Positioning component, 9. Connecting component, 10. Limiting structure, 101. Thickened sheet, 102. Round tube, 103. Circular ring, 104. Spring, 105. Ball bearing, 106. Positioning hole, 11. Corrugated steel sheet, 12. Purlin, 13. Foam glass insulation board, 14. Waterproof membrane, 15. Sound-absorbing cotton, 16. Roof panel, 17. Solid board, 18. Siphon rainwater hopper, 19. Limiting strip, 20. Guide groove. Detailed Implementation

[0016] In the following description, embodiments of the irregular metal roof structure with drainage device and its construction method of the present invention will be described with reference to the accompanying drawings.

[0017] The embodiments described herein are specific implementations of the present invention, used to illustrate the concept of the invention, and are illustrative and exemplary, and should not be construed as limiting the implementation or scope of the invention. In addition to the embodiments described herein, those skilled in the art can employ other obvious technical solutions based on the content disclosed in the claims and specification of this application. These technical solutions include those that make any obvious substitutions and modifications to the embodiments described herein.

[0018] The accompanying drawings in this specification are schematic diagrams to aid in illustrating the concept of the invention, and schematically show the shapes of the various parts and their interrelationships. Please note that, in order to clearly demonstrate the structure of the components in the embodiments of the invention, the drawings are not drawn to the same scale. The same reference numerals are used to indicate the same parts.

[0019] The following combination Figure 1-7This invention describes an embodiment of an irregularly shaped metal roof structure equipped with a drainage device, comprising main purlins 2 welded to the inner cavity of the irregularly shaped roof 1; gutter joists 3 are welded to the main purlins 2 on the irregularly shaped roof 1, and the gutter joists are supporting structures set on both sides of the U-shaped stainless steel drainage channel to support the weight of the stainless steel drainage channel. The gutter joists 3 are bolted to a stainless steel drainage channel 4, the cross-section of which can be U-shaped or ︺-shaped to facilitate the guidance of collected rainwater to the drainage pipe. The stainless steel drainage channel 4 is preferably made of austenitic stainless steel sheet with a thickness of 1.5mm to 3mm, obtained by bending, and has good corrosion resistance and pressure resistance. Its cross-sectional width can be selected in the range of 200 to 400mm to adapt to different roof drainage requirements. The stainless steel drainage channel includes a first side, a second side, and a bottom surface connecting the first side and the second side; for ease of description, the position corresponding to the first side is defined as the front side, and the opposite second side is defined as the rear side. A limiting connecting strip 5 is welded to the front side of the stainless steel drainage trough 4. An inclined mesh plate 6 is slidably connected to the inner cavity of the stainless steel drainage trough 4. The inclined mesh plate 6 is preferably made of stainless steel perforated plate or aluminum alloy perforated plate, with a thickness ranging from 1-2 mm and an inclination angle preferably between 20° and 45° to ensure smooth sliding of debris. A hook 7 is welded to the front side of the inclined mesh plate 6. The clamping part of the hook 7 is connected to the upper end of the limiting connecting strip 5. A positioning part 8 (i.e., the second side) is welded to one side of the inner cavity of the stainless steel drainage trough 4. A connecting part 9 is welded to one side of the inclined mesh plate 6. A limiting structure 10 is provided in the inner cavity of the connecting part 9. The limiting structure 10 includes a thickened piece 101 welded to the inner cavity of the connecting part 9. A circular hole is opened on the surface of the thickened piece 101, and a circular tube 102 is welded into the inner cavity of the circular hole. A ring 103 is slidably connected to the inner cavity of the tube 102. A spring 104 is welded between the ring 103 and the bottom of the tube 102. A ball bearing 105 is rotatably connected to the inner cavity of the ring 103. A positioning hole 106 is provided in the inner cavity of the positioning member 8. The surface of the ball bearing 105 is slidably connected to the inner cavity of the positioning hole 106. A profiled steel sheet 11 is fixedly connected to the top of the main purlin 2 by bolts. The profiled steel sheet 11 is preferably a galvanized color-coated sheet with a thickness of 0.8-1.2mm and a crest height of 50. The thickness of the profiled steel sheet 11 is 50 mm to 100 mm to improve the overall load-bearing capacity of the roof. The top of the profiled steel sheet 11 is fixedly connected to the purlin 12 by bolts. The top of the purlin 12 is fixedly connected to the foam glass insulation board 13 by bolts. The insulation board thickness is preferably 50 mm to 150 mm and the thermal conductivity is ≤0.05 W / m·K. A waterproof membrane 14 is installed on the top of the foam glass insulation board 13, and a sound-absorbing cotton 15 is installed on the top of the waterproof membrane 14.

[0020] In a further preferred embodiment, a solid plate 17 is welded to the surface of the inclined mesh plate 6. The solid plate is positioned directly above and covers the siphon rainwater hopper. By providing the solid plate 17, the present invention allows foreign objects to slide smoothly to the bottom of the inclined mesh plate 6 when they fall to a higher position on the surface of the inclined mesh plate 6, thus preventing them from falling directly into the siphon rainwater hopper and causing blockage.

[0021] In one specific embodiment, such as Figure 3 As shown, a roof panel 16 is provided on the top of the sound-absorbing cotton 15. The roof panel 16 is fixedly connected to the foam glass insulation board 13 by bolts through the waterproof membrane 14 and the sound-absorbing cotton 15. A rubber sealing gasket is provided between the bolt end and the upper surface of the roof panel 16. The rubber sealing gasket forms a waterproof barrier between the bolt and the roof panel by compression, preventing rainwater from entering the roof interior through the bolt position. Furthermore, the waterproof membrane 14 and the bolt have a sealed structure, such as a ring-shaped sealing structure formed by applying sealant to the outer circumference of the bolt. The sealant is sealed and bonded to the waterproof membrane. The sealant can be polyurethane sealant, silicone structural adhesive, or modified asphalt adhesive. The inner cavity of the stainless steel drainage channel 4 is equipped with a siphon rainwater bucket 18. The inner cavity of the positioning component 8 is welded with a limit strip 19. Two guide grooves 20 are opened on the surface of the thickened piece 101. The surface of the limit strip 19 is slidably connected to the inner cavity of the guide groove 20. By adopting the above solution: the present invention, through the combined use of the limiting strip 19 and the guide groove 20, enables the connecting member 9 to receive a linear guiding force between the connecting member 9 and the positioning member 8 when they are slidably connected.

[0022] In a further preferred embodiment, the mesh diameter of the inclined mesh plate 6 gradually decreases from a higher position to a lower position, and the mesh density at the lower position is greater than that at the higher position. By setting larger diameter mesh holes at the higher positions, smaller foreign objects can be prevented from clogging the mesh holes at the higher positions. Smaller foreign objects entering the stainless steel drainage channel can be washed away by the water flow and discharged through the siphon rainwater hopper. Setting smaller mesh holes at the lower positions allows for sufficient interception of foreign objects (including both larger and smaller objects) within the space formed by the stainless steel drainage channel and the inclined mesh plate. Since intercepting foreign objects at this position does not affect the overall flow of the inclined mesh plate, it will not cause drainage blockage.

[0023] Working Principle: When using this invention, the user plans and determines the position of the inclined mesh plate 6 before assembling the stainless steel drainage channel 4 into the inner cavity of the gutter keel 3. Then, the user accurately positions and fixes the limiting connecting strip 5 and the positioning piece 8. After installing the siphon rainwater hopper 18 into the inner cavity of the stainless steel drainage channel 4, the inclined mesh plate 6 is installed into the inner cavity of the stainless steel drainage channel 4. During the installation of the inclined mesh plate 6, the connecting piece 9 is preferentially engaged with the inner cavity of the positioning piece 8. At this time, the surface of the ball bearing 105 will roll tightly against the inner wall of the positioning piece 8 under the support of the ring 103 and the spring 104. When the ball bearing 105 rolls to the position of the positioning hole 106, the spring 104... The rebound force pushes the ball 105 into the inner cavity of the positioning hole 106, thereby achieving a positioning effect between the connector 9 and the positioning member 8, and then fixing the inclined mesh plate 6 and the stainless steel drainage channel 4. Next, the surface of the hook 7 is slid against the inner wall of the stainless steel drainage channel 4 until the inner cavity of the hook 7 is engaged with the surface of the limiting connecting strip 5, thereby fixing the inclined mesh plate 6 in the inner cavity of the stainless steel drainage channel 4. This can block foreign objects and impurities falling into the inner cavity of the stainless steel drainage channel 4. At the same time, the limiting structure 10 can facilitate the removal of the inclined mesh plate 6, thereby facilitating the removal of impurities from the inner cavity of the stainless steel drainage channel 4, so as to make the drainage of the inner cavity of the stainless steel drainage channel 4 smoother.

[0024] In summary: This irregularly shaped metal roof structure with a drainage device, by planning and determining the position of the inclined mesh plate 6 before assembling the stainless steel drainage channel 4 into the inner cavity of the gutter keel 3, and then accurately fixing the positions of the limiting connecting strip 5 and the positioning part 8, and then installing the siphon rainwater hopper 18 into the inner cavity of the stainless steel drainage channel 4, the inclined mesh plate 6 is installed into the inner cavity of the stainless steel drainage channel 4. During the installation of the inclined mesh plate 6, the connecting part 9 is fastened into the inner cavity of the positioning part 8 first. At this time, the limiting structure 10 will fix the inclined mesh plate 6 and the stainless steel drainage channel 4, which can block foreign objects and impurities falling into the inner cavity of the stainless steel drainage channel 4. At the same time, the limiting structure 10 can facilitate the removal of the inclined mesh plate 6, thereby facilitating the removal of impurities from the inner cavity of the stainless steel drainage channel 4, so as to make the drainage of the inner cavity of the stainless steel drainage channel 4 smoother.

[0025] The technical features disclosed above are not limited to the combinations of the disclosed features with other features. Those skilled in the art can also make other combinations of the technical features according to the purpose of the invention to achieve the purpose of the invention.

Claims

1. An irregularly shaped metal roof structure equipped with a drainage device, characterized in that, The structure includes a main purlin (2) welded to the inner cavity of the irregular roof (1). A gutter (3) is welded to the main purlin (2). A stainless steel drainage channel (4) is bolted to the gutter (3). A limiting connecting strip (5) is welded to the front side of the stainless steel drainage channel (4). A sloping mesh plate (6) is slidably connected to the inner cavity of the stainless steel drainage channel (4). A hook (7) is welded to the front side of the sloping mesh plate (6). The clamping part of the hook (7) is connected to the upper end of the limiting connecting strip (5). A positioning element (8) is welded to one side of the inner cavity of the stainless steel drainage channel (4). A connecting element (9) is welded to one side of the sloping mesh plate (6). The inner cavity of the connector (9) is provided with a limiting structure (10); the limiting structure (10) includes a thickened piece (101) welded to the inner cavity of the connector (9), the surface of the thickened piece (101) is provided with a circular hole, and a circular tube (102) is welded to the inner cavity of the circular hole; a circular ring (103) is slidably connected to the inner cavity of the circular tube (102), and a spring (104) is welded between the circular ring (103) and the bottom of the circular tube (102); a ball (105) is rotatably connected to the inner cavity of the circular ring (103), and a positioning hole (106) is provided in the inner cavity of the positioning member (8), and the surface of the ball (105) is slidably connected to the inner cavity of the positioning hole (106).

2. The irregularly shaped metal roof structure with a drainage device according to claim 1, characterized in that, The thickened sheet (101) has two guide grooves (20) on its surface, and the surface of the limiting strip (19) is slidably connected to the inner cavity of the guide groove (20).

3. The irregularly shaped metal roof structure with a drainage device according to claim 1 or 2, characterized in that, The top of the main purlin (2) is fixedly connected to a profiled steel plate (11) by bolts, and the top of the profiled steel plate (11) is fixedly connected to a liner purlin (12) by bolts.

4. The irregularly shaped metal roof structure with a drainage device according to claim 3, characterized in that, The top of the purlin (12) is fixedly connected to a foam glass insulation board (13) by bolts. A waterproof membrane (14) is provided on the top of the foam glass insulation board (13), and a sound-absorbing cotton (15) is provided on the top of the waterproof membrane (14).

5. The irregularly shaped metal roof structure with a drainage device according to claim 4, characterized in that, The top of the sound-absorbing cotton (15) is provided with a roof panel (16), which is fixedly connected to the foam glass insulation board (13) by bolts through the waterproof membrane (14) and the sound-absorbing cotton (15); a rubber sealing gasket is provided between the bolt end and the upper surface of the roof panel (16), and the waterproof membrane (14) and the bolt are sealed.

6. The irregularly shaped metal roof structure with a drainage device according to claim 5, characterized in that, The surface of the inclined mesh plate (6) is welded with a solid plate (17), the inner cavity of the stainless steel drainage trough (4) is equipped with a siphon rainwater bucket (18), and the inner cavity of the positioning member (8) is welded with a limit strip (19).

7. The irregularly shaped metal roof structure with a drainage device according to claim 1 or 2, characterized in that, The mesh diameter of the inclined mesh plate (6) gradually decreases from the higher position to the lower position, and the mesh density at the lower position is greater than the mesh density at the higher position.

8. A construction method for an irregularly shaped metal roof structure equipped with a drainage device, characterized in that, Before the stainless steel drainage channel (4) is installed into the inner cavity of the gutter keel (3), the user plans and determines the position of the inclined mesh plate (6), and then finds and fixes the position of the limiting connecting strip (5) and the positioning part (8). After installing the siphon rainwater bucket (18) into the inner cavity of the stainless steel drainage channel (4), the user installs the inclined mesh plate (6) into the inner cavity of the stainless steel drainage channel (4), thereby fixing the inclined mesh plate (6) and the stainless steel drainage channel (4). Then, the user slides the surface of the hook (7) against the inner wall of the stainless steel drainage channel (4) until the inner cavity of the hook (7) is engaged with the surface of the limiting connecting strip (5), thereby fixing the inclined mesh plate (6) into the inner cavity of the stainless steel drainage channel (4).

9. The construction method for an irregularly shaped metal roof structure with a drainage device according to claim 8, characterized in that, During the process of installing the inclined mesh plate (6) into the inner cavity of the stainless steel drainage channel (4), the connector (9) is fastened into the inner cavity of the positioning member (8) first. At this time, the surface of the ball (105) will roll against the inner wall of the positioning member (8) under the support of the ring (103) and the spring (104). When the ball (105) rolls to the position of the positioning hole (106), the rebound force of the spring (104) will push the ball (105) into the inner cavity of the positioning hole (106), thereby achieving a positioning effect between the connector (9) and the positioning member (8).