A line of limit combination screw assembly and its use method

Abstract

The application discloses a kind of row type limiting combination screw components and its using method, belong to fastener technical field.The component includes elastic clamp limiting structure, elastic clamp limiting structure includes multiple elastic clamps monomers arranged in a row;Elastic clamp monomer includes clamp part, clamp part includes clamp body and two clamp arms, clamp part is sequentially provided with guide section, fixed section and tail section from open end to closed end, guide section is provided with arc guide structure, fixed section is outer convex structure, and tail section is circular arc transition structure;Further include assembly mounting body, assembly mounting body is used for positioning elastic clamp limiting structure when combination screw is installed.The application has simple structure, clamp arm can be matched with the rod of combination screw and be limited to flat washer, can be compatible with different specifications, different materials flat washer and elastic washer combination assembly, and the combination is flexible, can be adapted to different use requirements, improve the working condition adaptation range of combination screw and use versatility.

Description

Technical Field

[0001] This invention relates to a row-type limiting combination screw assembly and its usage method, belonging to the field of fastener technology. Background Technology

[0002] Combination screws are pre-assembled fasteners. Most existing combination screws consist of a bolt, a flat washer, and a spring washer pre-assembled. The traditional assembly process for combination screws involves sequentially fitting the spring washer and flat washer onto the shank of the bolt, then using thread rolling to create threads on the bolt shank. The major diameter of the bolt thread is larger than the inner diameter of the flat washer, creating a barrier that limits the flat washer and spring washer, preventing them from falling off. Combination screws have a simple structural form and are currently the standard structure used in the fastener industry.

[0003] In the traditional assembly process of combination screws, before the fastening bolt is threaded, spring washers and flat washers need to be fitted onto the shank of the fastening bolt. After the fastening bolt is threaded, the spring washers and flat washers cannot be removed. After the combination screw is assembled, the whole assembly can only use the same surface treatment process. The spring washers, flat washers and fastening bolts can only be treated with one surface treatment. The surface treatment requirements for different materials are different. In order to meet the requirements of the same surface treatment, all components of the combination screw can only be made of the same material.

[0004] Traditional combination screws use thread rolling to make the outer diameter of the thread larger than the inner diameter of the flat washer, forming a blocking and limiting structure. This blocking and limiting structure is a fixed permanent assembly structure that cannot be disassembled or replaced. It can only be used with flat washers and spring washers of fixed specifications and materials. It cannot be used with flat washers and spring washers of different specifications and materials. It has poor flexibility in matching, limited range of working conditions, and insufficient versatility.

[0005] The loads and environmental conditions in different connection areas of aerospace equipment vary significantly, leading to different performance requirements for combination screws. This necessitates the selection of materials for each component of the combination screw and the adoption of appropriate surface treatment processes. However, traditional combination screws use completely uniform materials and surface treatments for all components, making it impossible to independently select materials and differentiate surface treatments for the fastening bolts, flat washers, and spring washers. This can easily result in localized performance deficiencies in the components of the combination screw, making it difficult to adapt to the complex working conditions of aerospace. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a row-type limiting combination screw assembly and its usage method.

[0007] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a row-type limiting combination screw assembly, including an elastic clamp limiting structure for positioning multiple sets of combination screws, wherein the combination screw includes a fastening bolt, a spring washer and a flat washer fitted on the shank of the fastening bolt; the elastic clamp limiting structure includes multiple elastic clamp units arranged in a row, and adjacent elastic clamp units are connected to each other. The elastic clamp unit includes a clamp portion, which includes a clamp body and two clamp spring arms symmetrically arranged on one side of the clamp body. The clamp body and the clamp spring arms have a U-shaped structure, and the clamp spring arms have multiple curved structures on their engagement surfaces. The clamp portion has a guide section, a fixing section, and a tail section in sequence from the open end to the closed end. The guide section has an arc-shaped guide structure and is located at the open end for inserting and removing the combined screw. The fixing section has an outward convex structure for positioning and engaging with the shank of the combined screw. The tail section has a rounded transition structure. It also includes an assembly and mounting body, which is used to position the elastic clamp limiting structure.

[0008] The beneficial effects of this invention are as follows: A spring washer and a flat washer are fitted onto the shank of a fastening bolt to form a combined screw. The shank of the combined fastening bolt is then clamped between the clamp spring arms. The clamp spring arms can limit and position the flat washer, eliminating the requirement that the flat washer's hole diameter be smaller than the major diameter of the thread after thread rolling. The fastening bolt, spring washer, and flat washer of each combined screw can be independently selected and processed from different materials. Different surface treatments can also be applied to each component. The elastic clamp limiting structure can assemble and position multiple sets of combined screws, making assembly convenient. After assembly and positioning, multiple sets of combined screws are neatly arranged, no longer disorderly, facilitating subsequent transport and installation of the combined screws. During combined screw installation, when inserting the combined screw into the mounting hole, the elastic clamp limiting structure is first positioned and installed on the assembly body. Then, the shank of the combined screw is directly screwed into the corresponding mounting hole. Before pre-tightening the fastening bolt, force is applied to the assembly body, causing the combined screw to disengage from the elastic clamp limiting structure. Finally, tightening the fastening bolt completes the locking process. This invention has a simple structure. The clamp spring arm can be engaged with the shank of the fastening bolt to limit the flat washer. The components of the combination screw can be replaced as needed. It is compatible with the combination assembly of flat washers and spring washers of different specifications and materials. It has high flexibility and can be adapted to different usage requirements, thus improving the working condition adaptability and versatility of the combination screw.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the elastic clamp limiting structure is an integral structure.

[0011] The advantages of adopting the above-mentioned further solutions are that the one-piece molded elastic clamp limiting structure has good consistency, makes it easier to ensure processing accuracy, reduces mass production costs, and has stronger overall structural stability, making it less prone to structural disintegration and failure, and thus more reliable.

[0012] Furthermore, a row of break points is provided between adjacent elastic clamp units.

[0013] The beneficial effect of adopting the above-mentioned further solution is that the elastic clamp limiting structure can be equipped with multiple sets of combination screws, which can be adapted to the mounting structure with multiple mounting holes in a row. The spacing between adjacent combination screws matches the spacing between adjacent mounting holes to be installed. The combination screws can be directly screwed into the corresponding mounting holes. Before the fastening bolt is pre-tightened, the combination screws are removed from the elastic clamp limiting structure, and then the fastening bolt is tightened to complete the locking. When the number of mounting holes in a row is less than the number of combination screws, the structure can be directly disconnected from the joint break point according to actual needs to obtain an elastic clamp limiting structure corresponding to the number of mounting holes. The multiple combination screws on this elastic clamp limiting structure correspond to the number of mounting holes. By installing this elastic clamp limiting structure on the assembly, the combination screws corresponding to the mounting holes can be installed, which greatly improves the flexibility of using combination screws.

[0014] Furthermore, the diameter of the flat washer is larger than the outer diameter of the shank of the fastening bolt.

[0015] The beneficial effects of adopting the above-mentioned further solution are that the combined screw limits the flat washer through the clamp spring arm, so the hole diameter of the flat washer does not need to be smaller than the major diameter of the fastening bolt thread. The two can be clearance-fitted, which facilitates the assembly of the combined screw. The flat washer provides stable limiting and can stably support the spring washer, ensuring the reliability of the combined screw's limiting. The flat washer and spring washer are assembled with the fastening bolt during the pre-assembly of the combined screw. The surface treatment of the flat washer, spring washer, and fastening bolt can be performed separately before assembly. Therefore, the flat washer, spring washer, and fastening bolt can be independently selected and matched with suitable materials and processed through different surface treatment processes. Each component can be treated differently according to requirements. The components of the combined screw can be independently selected with differentiated surface treatments, solving the problem that the uniform material and surface treatment of traditional combined screws cannot adapt to different aerospace working conditions, and precisely matching the performance requirements of each component.

[0016] Furthermore, the assembly mounting body includes an assembly part and a gripping part, and the assembly part is provided with a positioning slot; The other side of the clamp body is provided with a buckle body. The clamp body and the buckle body form a snap-fit ​​and pull-out part that is adapted to the positioning slot. The snap-fit ​​and pull-out part can slide into the positioning slot and engage with it.

[0017] The beneficial effect of adopting the above-mentioned further solution is that by holding the gripping part and engaging with the positioning slot through the snap-fit ​​and insertion part, the elastic clamp limiting structure with the combination screw can be quickly fixed on the assembly body. When installing the combination screw, it is only necessary to hold and pull the gripping part to easily disengage the combination screw from the elastic clamp limiting structure, thereby improving the convenience of the combination screw assembly.

[0018] Furthermore, the positioning slot is a T-shaped slot structure, the plane of the buckle body is perpendicular to the plane of the clamp body, and the cross-section of the engaging and disengaging part is a T-shaped structure.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the T-shaped structure of the snap-fit ​​and the T-shaped groove structure of the positioning slot can, on the one hand, realize the sliding snap-fit ​​positioning between the elastic clamp limiting structure and the assembly and installation body, and on the other hand, restrict the degree of freedom of the elastic clamp limiting structure in the direction perpendicular to the sliding direction, so as to prevent the elastic clamp limiting structure from shifting after being subjected to force.

[0020] Furthermore, one end of the positioning slot is an insertion opening end, and the other end is a limiting closing end.

[0021] The beneficial effect of adopting the above-mentioned further solution is that the insertion opening end allows the card engaging and removing part to be quickly inserted into the positioning slot; the limiting and closing end adopts a closed structure to prevent the card engaging and removing part from accidentally slipping out during the insertion process.

[0022] Furthermore, the grip portion adopts an arc-shaped handle, and the two ends of the arc-shaped handle are respectively connected to the assembly portion, forming a gripping space between the arc-shaped handle and the assembly portion.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the grip part adopts an arc-shaped handle, which conforms to the contour of the human hand, improving grip comfort and force application stability.

[0024] This invention also relates to a method of using the above-mentioned row-type limiting combination screw assembly, the method being as follows: During the pre-assembly of the combination screws: prepare multiple sets of fastening bolts, spring washers, and flat washers; sequentially place the spring washers and flat washers onto the shank of the fastening bolts to form a combination screw; then clamp the shank of the fastening bolt of the combination screw onto the fixed section of the clamp of the elastic clamp limiting structure; the clamp spring arm limits and fixes the flat washer of the combination screw, thus completing the pre-assembly of the combination screw; each combination screw adopts the above assembly process until all combination screws are pre-assembled. When installing combination screws: Insert the engaging and disengaging part of the elastic clamp limiting structure with multiple sets of combination screws into the positioning slot of the assembly mounting body. Screw the shank of the pre-installed combination screw into the mounting hole to be installed. Before the fastening bolt is pre-tightened, pull the assembly mounting body to disengage the elastic clamp limiting structure from the combination screws. Then tighten the fastening bolt to complete the locking operation.

[0025] The beneficial effects of this invention are as follows: The use of an elastic clamp limiting structure for integrated pre-assembly of multiple sets of combination screws eliminates the need for workers to individually retrieve and temporarily assemble the bolts, spring washers, and flat washers, thus saving on-site assembly steps. Pre-assembly of the combination screws can be performed in the factory. After pre-assembly into the elastic clamp limiting structure, the combination screws can be transported to the installation site. Before installation, the number of combination screws corresponding to the number of mounting holes in a row is selected. For any excess combination screws, the assembler can disconnect the connecting breakpoint structure to obtain an elastic clamp limiting structure with the corresponding number of combination screws. This elastic clamp limiting structure is then snapped onto the assembly mounting body by sliding the engaging insertion part into the positioning slot of the assembly mounting body. During installation, the combination screws are directly aligned with the corresponding mounting holes and screwed in. Before pre-tightening the combination screws, the assembly mounting body is pulled, causing the clamp spring arm of the elastic clamp limiting structure to disengage from the bolt shank. The bolts can then be tightened, thereby achieving the purpose of locking the combination screws. This invention simplifies the on-site installation process of multiple sets of combination screws by using a pre-installed integrated approach, reducing the time spent assembling each part individually during the assembly process. The integrated arrangement of combination screws also facilitates their transfer and storage, significantly improving the efficiency of multi-point synchronous assembly and locking. The elastic clamp limiting structure can adapt to different installation requirements, and the number of sets of combination screws can be flexibly adjusted through the breakpoints in the arrangement, making it more adaptable. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram of the left-side structure of the present invention; Figure 4 This is a schematic diagram of the right-side structure of the present invention; Figure 5 This is a schematic diagram of the structure of the combined screw pre-installed in the elastic clamp limiting structure of the present invention; Figure 6 for Figure 5 Front view structural diagram; Figure 7 for Figure 5 A top-view structural diagram; Figure 8 This is a schematic diagram of the elastic clamp limiting structure of the present invention; Figure 9 This is a schematic diagram of the main structure of the elastic clamp unit of the present invention; Figure 10 This is a top view of the elastic clamp unit of the present invention; Figure 11 This is a three-dimensional structural diagram of the elastic clamp unit of the present invention; Figure 12 This is a schematic diagram of the left side of the assembly and mounting body of the present invention; Figure 13 This is a three-dimensional structural diagram of the assembly and mounting body of the present invention; Figure 14 This is a schematic diagram of the assembly screw installation process of the present invention; In the diagram, 100 is the elastic clamp limiting structure; 101 is the elastic clamp unit; 1011 is the clamp body; 1012 is the clamp spring arm; 1013 is the guide section; 1014 is the fixing section; 1015 is the tail section; 1016 is the buckle body; 102 is the row of break points structure; 200 is the assembly installation body; 201 is the assembly part; 2011 is the positioning slot; 2012 is the insertion opening end; 2013 is the limiting closed end; 202 is the gripping part; 203 is the gripping space; 300 is the combination screw; 301 is the fastening bolt; 302 is the spring washer; and 303 is the flat washer. Detailed Implementation

[0027] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0028] like Figures 1-13 As shown, a row-type limiting combination screw assembly includes an elastic clamp limiting structure 100 for positioning multiple sets of combination screws 300. The combination screws 300 include a fastening bolt 301, a spring washer 302 and a flat washer 303 fitted on the shank of the fastening bolt 301; the elastic clamp limiting structure 100 includes multiple elastic clamp units 101 arranged in a row, and adjacent elastic clamp units 101 are connected to each other. The elastic clamp unit 101 includes a clamp portion, which includes a clamp body 1011 and two clamp spring arms 1012 symmetrically arranged on one side of the clamp body 1011. The clamp body 1011 and the clamp spring arms 1012 form a U-shaped structure. The clamp spring arms 1012 have multiple curved structures on their engagement surfaces. The clamp portion has a guide section 1013, a fixing section 1014, and a tail section 1015 sequentially from the open end to the closed end. The guide section 1013 has an arc-shaped guide structure and is located at the open end for inserting and removing the combined screw 300. The fixing section 1014 has an outward convex structure for positioning and engaging with the shank of the combined screw 300. The tail section 1015 has a rounded transition structure. It also includes an assembly mounting body 200, which is used to position the elastic clamp limiting structure 100 when the combination screw 300 is installed.

[0029] The elastic clamp limiting structure 100 is a one-piece structure. The one-piece molded elastic clamp limiting structure 100 has good consistency, makes it easier to ensure processing accuracy, reduces mass production costs, and at the same time, the overall structure is more stable, less prone to structural disintegration and failure, and has higher reliability.

[0030] A row of breakpoint structures 102 is provided between adjacent elastic clamp units 101. The elastic clamp limiting structure 100 can be equipped with multiple sets of combination screws 300, which can be adapted to an installation structure with multiple mounting holes in a row. The spacing between adjacent combination screws 300 is adapted to the spacing between adjacent mounting holes to be installed. The combination screws 300 can be directly screwed into the corresponding mounting holes. Before the fastening bolts 301 are pre-tightened, the combination screws 300 are removed from the elastic clamp limiting structure 100, and then the fastening bolts 301 are tightened to complete the locking. When the number of mounting holes in a row is less than the number of combination screws 300, the structure can be broken off directly from the row break point 102 according to actual needs to obtain an elastic clamp limiting structure 100 corresponding to the number of mounting holes. The multiple combination screws 300 on the elastic clamp limiting structure 100 correspond to the number of mounting holes. By installing the elastic clamp limiting structure 100 on the assembly mounting body 200, the combination screws 300 corresponding to the mounting holes can be installed, which greatly improves the flexibility of using the combination screws 300.

[0031] The diameter of the flat washer 303 is larger than the outer diameter of the shank of the fastening bolt 301. The combined screw 300 limits the flat washer 303 by means of the clamp spring arm 1012, so the diameter of the flat washer 303 does not need to be smaller than the major diameter of the thread of the fastening bolt 301. The two can be clearance-fitted, which makes it easier to assemble the combined screw 300. The flat washer 303 provides stable limiting and can stably support the spring washer 302, ensuring the reliability of the limiting of the combined screw 300. Flat washers 303 and spring washers 302 are pre-assembled with fastening bolts 301 during the assembly of the combination screw 300. The surface treatments of flat washers 303, spring washers 302, and fastening bolts 301 can be performed separately before assembly. Therefore, flat washers 303, spring washers 302, and fastening bolts 301 can be made of different materials, with each component independently selected and processed using different surface treatment techniques. Each component can undergo different surface treatments as required, achieving performance matching according to needs. The ability to independently select materials and differentiate surface treatments for each component of the combination screw 300 solves the problem that the uniform material and surface treatment of traditional combination screws 300 cannot adapt to different aerospace operating conditions, precisely matching the performance requirements of each component.

[0032] The assembly mounting body 200 includes an assembly part 201 and a gripping part 202, and the assembly part 201 is provided with a positioning slot 2011; On the other side of the clamp body 1011, there is a snap-fit ​​body 1016. The clamp body 1011 and the snap-fit ​​body 1016 form a snap-fit ​​and pull-out part that is adapted to the positioning slot 2011. The snap-fit ​​and pull-out part can slide into the positioning slot 2011 and engage with it. By holding the grip part 202 and engaging with the positioning slot 2011 through the snap-fit ​​and pull-out part, the elastic clamp limiting structure 100 with the combination screw 300 can be quickly fixed on the assembly mounting body 200. When installing the combination screw 300, simply holding and pulling the grip part 202 can easily disengage the combination screw 300 from the elastic clamp limiting structure 100, improving the convenience of assembling the combination screw 300.

[0033] The positioning slot 2011 has a T-shaped slot structure. The plane of the buckle body 1016 is perpendicular to the plane of the clamp body 1011, and the cross-section of the engaging and inserting part is a T-shaped structure. The T-shaped structure of the engaging and inserting part cooperates with the T-shaped slot structure of the positioning slot 2011. On the one hand, it can realize the sliding engagement and positioning between the elastic clamp limiting structure 100 and the assembly mounting body 200. On the other hand, it can restrict the degree of freedom of the elastic clamp limiting structure 100 in the direction perpendicular to the sliding direction, preventing the elastic clamp limiting structure 100 from shifting under force. The positioning slot 2011 can meet the requirement of the combination screw 300 disengaging from the elastic clamp limiting structure 100, and the installation of the combination screw 300 is also more convenient and quick.

[0034] The positioning slot 2011 has an insertion opening end 2012 at one end and a limiting closing end 2013 at the other end. The insertion opening end 2012 allows the locking and unlocking part to be quickly inserted into the positioning slot 2011; the limiting closing end 2013 adopts a closed structure to prevent the locking and unlocking part from accidentally slipping out during the insertion process.

[0035] The grip portion 202 adopts an arc-shaped handle, and both ends of the arc-shaped handle are respectively connected to the assembly portion 201, forming a gripping space 203 between the arc-shaped handle and the assembly portion 201. The grip portion 202 adopts an arc-shaped handle, which conforms to the contour of the human hand, improving grip comfort and force application stability.

[0036] like Figures 1-14 As shown, the present invention also relates to a method of using the above-mentioned row-type limiting combination screw assembly, the method being as follows: When pre-assembling the combination screw 300: prepare multiple sets of fastening bolts 301, spring washers 302 and flat washers 303, and sequentially put the spring washers 302 and flat washers 303 onto the shank of the fastening bolts 301 to form the combination screw 300. Then, clamp the shank of the fastening bolts 301 of the combination screw 300 onto the fixing section 1014 of the clamping part of the elastic clamp limiting structure 100. The clamp spring arm 1012 limits and fixes the flat washer 303 of the combination screw 300, thus completing the pre-assembly of the combination screw 300. Each combination screw 300 adopts the above assembly process until all combination screws 300 are pre-assembled. When installing the combination screws 300: Insert the engaging and disengaging part of the elastic clamp limiting structure 100, which is equipped with multiple sets of combination screws 300, into the positioning slot 2011 of the assembly mounting body 200. The shank of the pre-installed combination screws 300 fastening bolts 301 is directly screwed into the mounting hole to be installed. Before pre-tightening the fastening bolts 301, pull the assembly mounting body 200 to disengage the elastic clamp limiting structure 100 from the combination screws 300. Then tighten the fastening bolts 301 to complete the locking operation. Figure 14 As shown.

[0037] This invention breaks through the rigid limitations of the traditional combined screw 300 structure. The components of the combined screw 300, such as the fastening bolt 301, flat washer 303 and spring washer 302, can be independently selected and matched with suitable materials for processing according to the usage requirements of different working conditions of aerospace equipment connection, and each component can be individually and specifically surface treated to achieve the performance matching of each component as needed.

[0038] The elastic clamp limiting structure 100 adopts a row-like form, such as... Figure 8 As shown, multiple sets of combination screws 300 can be positioned to form a row of combination screws 300, such as... Figure 5As shown, this not only facilitates the batch handling and continuous assembly of the combination screws 300, but also significantly improves the operational efficiency of the combination screws 300. It also standardizes material management, reduces the probability of small parts loss, and effectively reduces the risk of components falling during on-site assembly. The row of combination screws 300 corresponds to a row of multiple mounting holes, and the hole spacing is adapted to the spacing of the combination screws 300, such as... Figure 14 As shown, the fastening bolt 301 of the combination screw 300 can be directly inserted, enabling batch installation and further improving the assembly efficiency and consistency of the combination screw 300. The open end of the clamp part adopts an outward V-shaped arc guide structure, which facilitates the insertion and removal of the shank of the fastening bolt 301; the middle fixed section 1014 of the clamp part cooperates with the smooth shank of the fastening bolt 301 to form a stable clamping limit; the tail section 1015 of the clamp part has a rounded transition structure to avoid stress concentration during assembly; a protruding buckle body 1016 is provided at the tail of the clamp body 1011 to form an operating surface that is easy for fingers to apply force, improving the convenience of insertion and removal assembly and the grip feel; the row break structure 102 allows multiple elastic clamp units 101 to be integrally molded and supplied in a row. In use, the elastic clamp limiting structure 100 can be directly disconnected from the breakpoint of the row of breakpoint structures 102 according to actual needs, resulting in an elastic clamp limiting structure 100 with the required number of elastic clamp units 101, which greatly improves the flexibility of the production and use of the elastic clamp limiting structure 100. When the combination screw 300 is installed on site, the assembly mounting body 200 is used to quickly insert the engaging and dispensing part into the positioning slot 2011. The grip part 202 adopts an arc-shaped handle that conforms to the contour of the human hand, improving grip comfort and force application stability. The length of the positioning slot 2011 can be set according to the hole spacing of different specifications and grades of combination screws 300, which can be compatible with different numbers of combination screws 300, achieving universality in multiple scenarios.

[0039] The present invention employs a row-type limiting combination screw assembly, eliminating the need for pre-assembly and surface treatment of the combination screws 300. Before assembly, the flat washer 303, spring washer 302, and fastening bolt 301 can be made of different materials and treated with different surface treatment processes. Each component of the combination screw 300 can be independently selected and subjected to differentiated surface treatments, enabling precise matching of the performance requirements of each component to meet various aerospace operating conditions. The use of a flexible clamping part for limiting instead of traditional rolled thread stops allows for the combination of flat washers 303 and spring washers 302 of different materials and specifications, effectively improving the assembly versatility of the combination screw 300. The combination screw 300 is pre-limited by the clamping part, facilitating insertion and removal, and also accommodates the need for both overall screw-in installation of multiple combination screws 300 and independent tightening and locking of the fastening bolts 301, resulting in flexible assembly. The design of the row break structure 102 allows multiple elastic clamp units 101 to be integrally molded and supplied in a row, reducing the manufacturing cost per unit. It also allows assembly personnel to disconnect and use them as needed, greatly improving on-site assembly efficiency, reducing the risk of components falling, optimizing on-site material management processes, and adapting to the usage needs of large-scale assembly scenarios.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A row-type limiting combination screw assembly, comprising an elastic clamp limiting structure (100) for positioning multiple sets of combination screws (300), characterized in that, The combined screw (300) includes a fastening bolt (301), a spring washer (302) and a flat washer (303) fitted on the shank of the fastening bolt (301); the elastic clamp limiting structure (100) includes a plurality of elastic clamp units (101) arranged in a row, and adjacent elastic clamp units (101) are connected to each other. The elastic clamp unit (101) includes a clamp part, which includes a clamp body (1011) and two clamp spring arms (1012) symmetrically arranged on one side of the clamp body (1011). The clamp body (1011) and the clamp spring arms (1012) form a U-shaped structure. The clamp spring arms (1012) have multiple curved structures on their snap-fit ​​surfaces. The clamp part is provided with a guide section (1013), a fixing section (1014) and a tail section (1015) in sequence from the open end to the closed end. The guide section (1013) has an arc-shaped guide structure, which is located at the open end and is used for the insertion and removal of the combined screw (300). The fixing section (1014) has an outward convex structure and is used for positioning and cooperating with the shank of the combined screw (300). The tail section (1015) has a rounded transition structure. It also includes an assembly mounting body (200) for positioning the elastic clamp limiting structure (100).

2. The row-type limiting combination screw assembly according to claim 1, characterized in that, The elastic clamp limiting structure (100) is an integral structure.

3. The row-type limiting combination screw assembly according to claim 1, characterized in that, A row of breakpoint structures (102) is provided between adjacent elastic clamp units (101).

4. The row-type limiting combination screw assembly according to claim 1, characterized in that, The diameter of the flat washer (303) is larger than the outer diameter of the shank of the fastening bolt (301).

5. The row-type limiting combination screw assembly according to any one of claims 1-4, characterized in that, The assembly mounting body (200) includes an assembly part (201) and a gripping part (202), and the assembly part (201) is provided with a positioning slot (2011). On the other side of the clamp body (1011), there is a buckle body (1016). The clamp body (1011) and the buckle body (1016) form a snap-fit ​​and snap-out part that is adapted to the positioning slot (2011). The snap-fit ​​and snap-out part can slide into the positioning slot (2011) and engage with it.

6. The row-type limiting combination screw assembly according to claim 5, characterized in that, The positioning slot (2011) is a T-shaped slot structure, the plane of the buckle body (1016) is perpendicular to the plane of the clamp body (1011), and the cross-section of the snap-fit ​​insertion part is a T-shaped structure.

7. The row-type limiting combination screw assembly according to claim 5, characterized in that, The positioning slot (2011) has an insertion opening end (2012) at one end and a limiting closing end (2013) at the other end.

8. The row-type limiting combination screw assembly according to claim 5, characterized in that, The grip (202) adopts an arc-shaped handle, and the two ends of the arc-shaped handle are respectively connected to the assembly part (201), forming a grip space (203) between the arc-shaped handle and the assembly part (201).

9. A method of using the row-type limiting combination screw assembly according to any one of claims 1-8, characterized in that, The method is as follows: When pre-assembling the combination screw (300): prepare multiple sets of fastening bolts (301), spring washers (302) and flat washers (303), put the spring washers (302) and flat washers (303) on the shank of the fastening bolts (301) in sequence to form the combination screw (300), and then clamp the shank of the fastening bolts (301) of the combination screw (300) onto the fixing section (1014) of the clamp of the elastic clamp limiting structure (100). The clamp spring arm (1012) limits and fixes the flat washer (303) of the combination screw (300) to complete the pre-assembly of the combination screw (300). Each combination screw (300) adopts the above assembly process until all combination screws (300) are pre-assembled. When installing the combination screw (300): insert the engaging and disengaging part of the elastic clamp limiting structure (100) equipped with multiple sets of combination screws (300) into the positioning slot (2011) of the assembly mounting body (200). After pre-installation, screw the shank of the fastening bolt (301) of the combination screw (300) into the mounting hole to be installed. Before the fastening bolt (301) is pre-tightened, pull the assembly mounting body (200) to disengage the elastic clamp limiting structure (100) from the combination screw (300). Then tighten the fastening bolt (301) to complete the locking operation.

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