Connection node

Abstract

The present application relates to a connecting node, comprising: a first connecting piece for connecting a first component; a second connecting piece sleeved with the first connecting piece, the second connecting piece comprising a hub portion and a first engaging portion provided on the outer circumferential surface of the hub portion, and the inner wall of the mounting hole being provided with a second engaging portion engaging with the first engaging portion; the second connecting piece is configured to have elasticity, so that when the second connecting piece is mounted in the mounting hole, the first engaging portion and the second engaging portion engage with each other to limit the radial freedom degree of the second connecting piece and the second component. The connecting node described above can tightly connect the second connecting piece and the second component by providing the first engaging portion and the second engaging portion engaging with each other, and improve the pullout resistance of the second connecting piece; by configuring the second connecting piece to have elasticity, when the second connecting piece is mounted in the mounting hole, the first engaging portion and the second engaging portion engage with each other to limit the radial freedom degree of the second connecting piece and the second component, thereby improving the reliability of the second connecting piece.

Description

Technical Field

[0001] This invention relates to the field of building connection technology, and in particular to a connection node. Background Technology

[0002] To connect different structural components, a connection structure is provided in the related art. The connection structure includes two structural components to be connected, and a connection assembly for connecting the two structural components to be connected. The connection assembly connects the two structural components by an interference fit.

[0003] However, the interference fit makes the installation of connecting components and structural parts difficult, and the pull-out resistance of the connecting components is not high. Summary of the Invention

[0004] Therefore, it is necessary to provide a connection node that is easy to install and can effectively improve the pull-out resistance of the connection components.

[0005] According to one aspect of this application, a connection node is provided for connecting a first component and a second component, the second component having a mounting hole extending along a first direction, the connection node comprising:

[0006] A first connector includes a first connecting segment and a second connecting segment sequentially disposed along the first direction, wherein the first connecting segment is used to connect the first component; and

[0007] The second connector is sleeved on the second connecting segment. The second connector includes a hub and a first engagement portion disposed on the outer peripheral surface of the hub. The inner wall of the mounting hole is provided with a second engagement portion that engages with the first engagement portion.

[0008] The second connector is configured to be elastic, such that when the second connector is installed in the mounting hole, the first engagement portion and the second engagement portion engage with each other to restrict the radial degree of freedom of the second connector and the second component.

[0009] The aforementioned connection node, by providing a first and a second interlocking part that meshes with each other, enables the second connector and the second component to be tightly connected, thereby improving the pull-out resistance of the second connector; by constructing the second connector to be elastic, when the second connector is installed in the mounting hole, the first and second interlocking parts mesh with each other to restrict the radial degree of freedom of the second connector and the second component, thereby improving the reliability of the second connector.

[0010] In one embodiment, the first engagement portion has a first root portion connected to the hub portion and a first top edge spaced apart from the first root portion; the width dimension of the first engagement portion decreases along the direction from the first root portion to the first top edge, and the width dimension of the first engagement portion is the dimension of the first engagement portion in the first direction.

[0011] In one embodiment, a first leading edge and a first trailing edge of the first engagement portion are defined between the first root portion and the hub portion; along the first direction, the first leading edge is located upstream of the first trailing edge; the angle formed between the direction of the first leading edge pointing to the first top edge and the first direction is a first angle; the angle formed between the direction of the first trailing edge pointing to the first top edge and the first direction is a second angle.

[0012] The first angle and the second angle are both greater than 0 and less than or equal to 90 degrees.

[0013] In one embodiment, the first angle is equal to the second angle.

[0014] In one embodiment, the first angle is 60 degrees.

[0015] In one embodiment, the direction in which the first leading edge points to the first top edge is perpendicular to the first direction.

[0016] In one embodiment, along the first direction, the first top edge is located upstream of the first leading edge.

[0017] In one embodiment, the first angle is greater than or equal to 60 degrees and less than 90 degrees.

[0018] In one embodiment, along the first direction, the first top edge is located between the first front edge and the first rear edge, and the first angle is not equal in magnitude to the second angle.

[0019] In one embodiment, the first angle is greater than or equal to 80 degrees and less than 90 degrees.

[0020] In one embodiment, the second engagement portion has a second root portion connected to the inner wall of the mounting hole, and a second top edge spaced apart from the second root portion; the width dimension of the second engagement portion decreases along the direction from the second root portion to the second top edge, and the width dimension of the second engagement portion is the dimension of the second engagement portion in the first direction.

[0021] In one embodiment, the second root portion and the inner wall of the mounting hole define a second leading edge and a second trailing edge of the second engagement portion. Along the first direction, the second leading edge is located upstream of the second trailing edge. The angle formed between the direction of the second leading edge pointing to the second top edge and the first direction is a third angle. The angle formed between the direction of the second trailing edge pointing to the second top edge and the first direction is a fourth angle.

[0022] The range of the third angle and the fourth angle is greater than 0 and less than or equal to 90 degrees.

[0023] In one embodiment, the third angle is equal to the fourth angle.

[0024] In one embodiment, the third angle is 60 degrees.

[0025] In one embodiment, the first angle is equal to the fourth angle, and the second angle is equal to the third angle.

[0026] In one embodiment, the direction in which the second trailing edge points to the second top edge is perpendicular to the first direction.

[0027] In one embodiment, along the first direction, the second trailing edge is located upstream of the second top edge.

[0028] In one embodiment, the fourth angle is greater than or equal to 60 degrees and less than 90 degrees.

[0029] In one embodiment, along the first direction, the second top edge is located between the second front edge and the second rear edge, and the third angle and the fourth angle are not equal in magnitude.

[0030] In one embodiment, the fourth angle is greater than or equal to 80 degrees and less than 90 degrees. In one embodiment, the first engagement portion is configured to extend along a spiral line; or

[0031] The first engagement portion is configured to be arranged along the circumferential direction of the hub portion.

[0032] In one embodiment, the second connector has at least one opening extending through the hub in the radial direction, and at least one of the openings extends through one end of the second connector in the first direction.

[0033] In one embodiment, the second connector has at least one first opening, and at least one first opening extends through one end of the second connector away from the first connecting segment.

[0034] In one embodiment, along the first direction, the size of the first opening increases in the circumferential direction of the hub.

[0035] In one embodiment, multiple first openings are provided, and all the first openings are spaced apart along the circumferential direction of the hub.

[0036] In one embodiment, the second connector has at least one second opening, and the at least one second opening extends through one end of the second connector near the first connecting segment;

[0037] The first opening and the second opening are arranged alternately along the circumferential direction of the hub.

[0038] In one embodiment, the second connector has a third opening extending through the second connector along the first direction; along the first direction, the size of the third opening increases in the circumferential direction of the hub.

[0039] In one embodiment, the first component has a mounting groove extending through it along the first direction at one end near the second component; the second connector is disposed in the mounting groove at one end along the first direction away from the first opening.

[0040] In one embodiment, the connecting node further includes a limiting member disposed at the end of the second connecting segment away from the first connecting segment;

[0041] The limiting member is used to cooperate with the second connecting member to at least restrict the radial degree of freedom of the second connecting member and the second component.

[0042] In one embodiment, the limiting member has a first limiting surface, and the second connecting member has a second limiting surface on the side near the limiting member that can abut against the first limiting surface;

[0043] The orthographic projections of the first limiting surface onto the reference surface and the second limiting surface onto the reference surface at least partially overlap; the reference surface is a plane perpendicular to the first direction.

[0044] In one embodiment, the first limiting surface has a first edge and a second edge surrounding the first connector, the first edge being closer to the first connector than the second edge;

[0045] Along the first direction, the first edge is located upstream of the second edge; the direction from the first edge to the second edge is set at an angle to the first direction.

[0046] In one embodiment, the second limiting surface has a third edge and a fourth edge surrounding the first connector, the third edge being closer to the first connector than the fourth edge;

[0047] Along the first direction, the third edge is located upstream of the fourth edge; the direction in which the third edge points to the fourth edge is set at an angle to the first direction.

[0048] In one embodiment, the limiting member is detachably fitted onto the end of the second connecting segment away from the first connecting segment.

[0049] In one embodiment, at least two limiting members are provided, wherein at least one of the limiting members is located at the end of the second connecting segment away from the first connecting segment; and / or

[0050] At least one of the limiting members is located at one end of the second connecting segment near the first connecting segment.

[0051] In one embodiment, the outer peripheral wall of the first connector and the inner peripheral wall of the second connector together define a gap in the radial direction of the hub.

[0052] In one embodiment, the direction of extension of the gap is set at an angle to the first direction.

[0053] In one embodiment, along the first direction, the dimensions of the second connecting segment and the second connecting member increase in the circumferential direction of the hub.

[0054] In one embodiment, along the first direction, the inner peripheral walls of the second connecting segment and the second connector tend to increase in size along the radial direction of the mounting hole, while the outer peripheral wall of the second connector remains unchanged in size along the radial direction of the mounting hole.

[0055] In one embodiment, the connection node further includes an elastic element; the elastic element is disposed between the first connector and the second connector and is located within the gap.

[0056] In one embodiment, the second connector includes multiple crest segments and multiple trough segments;

[0057] Wherein, the crest segments and the trough segments are alternately connected in a ring structure along the circumference of the hub; or, the crest segments and the trough segments are alternately connected along the first direction;

[0058] Each of the wave crest segments is provided with the first engagement portion. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the assembly of the connecting node with the first component and the second component in one embodiment of the present invention;

[0060] Figure 2 This is a schematic diagram of the engagement structure of the first biting portion and the second biting portion in one embodiment of the present invention;

[0061] Figure 3 This is a partially enlarged schematic diagram of the first occlusal portion in one embodiment of the present invention;

[0062] Figure 4 This is a partially enlarged schematic diagram of the first occlusal portion in another embodiment of the present invention;

[0063] Figure 5 This is a schematic diagram of the assembly of the connecting node with the first component and the second component in another embodiment of the present invention;

[0064] Figure 6 This is a schematic diagram of a structure in one embodiment of the present invention where the second connector only has a first opening;

[0065] Figure 7 This is a schematic diagram of the structure of the second connector having first and second openings in one embodiment of the present invention;

[0066] Figure 8 For the present invention Figure 7 A diagram showing the view from below;

[0067] Figure 9 For the present invention Figure 7 A top-down view;

[0068] Figure 10 This is a schematic diagram of the structure of the second connector having first and second openings in another embodiment of the present invention;

[0069] Figure 11 This is a schematic diagram of a structure in one embodiment of the present invention, showing that the second connector has first, second and third openings;

[0070] Figure 12 This is a schematic diagram of a structure in one embodiment of the present invention where the second connector only has a third opening;

[0071] Figure 13 This is a schematic diagram of the structure of the second connector having first and third openings in one embodiment of the present invention;

[0072] Figure 14 This is an assembly diagram showing the first component having a mounting groove in one embodiment of the present invention;

[0073] Figure 15 This is an assembly diagram showing a connecting node with a limiting component in one embodiment of the present invention;

[0074] Figure 16 This is a schematic diagram of a structure in one embodiment of the present invention, showing that the connecting node is provided with two limiting members;

[0075] Figure 17 This is an assembly diagram showing a gap between the first connector and the second connector in another embodiment of the present invention;

[0076] Figure 18 This is an assembly diagram showing a gap between the first connector and the second connector in another embodiment of the present invention.

[0077] Figure 19 For the present invention Figure 17 A schematic diagram of a structure in which the connecting nodes are equipped with limiting components;

[0078] Figure 20 For the present invention Figure 18 A schematic diagram of a structure in which the connecting nodes are equipped with limiting components;

[0079] Figure 21 For the present invention Figure 17 A schematic diagram of a structure in which the connecting nodes are equipped with elastic elements;

[0080] Figure 22 For the present invention Figure 18 A schematic diagram of a structure in which the connecting nodes are equipped with elastic elements;

[0081] Figure 23 This is a schematic diagram of the assembly of the connecting nodes in one embodiment of the present invention;

[0082] Figure 24 As shown in one embodiment of the present invention Figure 19 Schematic diagram of the cross section of AA;

[0083] Figure 25 This is a schematic diagram of the assembly of the connecting node in another embodiment of the present invention;

[0084] Figure 26 For the present invention Figure 25 Cross-sectional view of BB;

[0085] Figure 27 For the present invention Figure 23 A schematic diagram of a structure in which the connecting nodes are equipped with limiting components;

[0086] Figure 28 For the present invention Figure 25 A schematic diagram of a structure in which the connecting nodes are equipped with limiting components;

[0087] Figure 29 This is a schematic diagram of a connection node having an elastic element in one embodiment of the present invention;

[0088] Figure 30 For the present invention Figure 29 Cross-sectional view of CC;

[0089] Figure 31 This is a schematic diagram of the elastic element in another embodiment of the present invention;

[0090] Figure 32 This is a schematic diagram of the elastic element in another embodiment of the present invention;

[0091] Figure 33 This is a top view of the second component in one embodiment of the present invention.

[0092] Explanation of icon numbers:

[0093] 10. Connecting node; 11. First connector; 111. First connecting segment; 112. Second connecting segment; 1121. Mounting surface; 12. Second connector; 120. Hub; 121. First engaging portion; 122. Second limiting surface; 123. First opening; 124. Second opening; 125. Third opening; 126. Crest segment; 127. Valley segment; 13. Limiting element; 131. First limiting surface; 14. Gap; 15. Elastic element; 151. Protrusion; 152. Recess;

[0094] 20. First component; 21. Connecting hole; 22. Mounting groove; 30. Second component; 31. Mounting hole; 311. Second engagement part. Detailed Implementation

[0095] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0096] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0097] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0099] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0100] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0101] A related technology discloses a building connection node, including a connecting rod, an extrusion block sleeved on the connecting rod, and a metal spring ring sleeved on the extrusion block. One end of the connecting rod is connected to a first component. The combined structure formed by the connecting rod, extrusion block, and metal spring ring is inserted into the mounting hole of a second component via an interference fit. Filler material needs to be injected into the mounting hole beforehand to ensure a secure connection between the combined structure and the second component. Because of the interference fit, this type of building connection node is difficult to insert into the second component, resulting in installation difficulties. To achieve a stable connection, multiple connection nodes are usually used to connect the first and second components simultaneously. However, due to the low precision of the mounting holes, the interference fit connection nodes may not be installed smoothly, and the aging of the filler material can lead to unreliable connections.

[0102] Therefore, this application provides a connection node 10 to address at least one of the aforementioned deficiencies in the related art.

[0103] Figure 1 This is a schematic diagram of the assembly of the connecting node with the first component and the second component in one embodiment of the present invention.

[0104] See Figure 1 This application provides a connection node 10 for connecting a first component 20 and a second component 30, wherein the second component 30 has a first direction (e.g., Figure 1 The mounting hole 31 extends in the direction shown in Figure a. The connecting node 10 includes a first connector 11 for connecting to the first component 20 and a second connector 12 for connecting to the second component 30. The second connector 12 includes a first engagement portion 121. The inner wall of the mounting hole 31 of the second component 30 is provided with a second engagement portion 311 that engages with the first engagement portion 121. The second connector 12 is constructed to be elastic.

[0105] Thus, by providing a first engaging portion 121 and a second engaging portion 311 that interlock with each other, the second connector 12 and the second component 30 can be tightly connected, thereby improving the pull-out resistance of the second connector. By constructing the second connector 12 to be elastic, when the second connector 12 is installed in the mounting hole 31, the first engaging portion 121 and the second engaging portion 311 interlock with each other, thereby restricting the radial degree of freedom of the second connector 12 and the second component 30, thereby improving the reliability of the second connector 12.

[0106] Specifically, see Figure 1The first connector 11 has a rotating body structure and has a first connecting segment 111 and a second connecting segment 112 arranged sequentially along a first direction. The first connecting segment 111 is used to connect to the first component 20. The first component 20 has a connecting hole 21 that penetrates the first component 20 along the first direction. The first connecting segment 111 of the first connector 11 passes through the connecting hole 21 to connect to the first component 20. Optionally, the outer peripheral wall of the first connecting segment 111 of the first connector 11 is constructed as a threaded surface, and the connecting hole 21 is a threaded hole, that is, the first connector 11 and the first component 20 are connected by threads.

[0107] Thus, connecting the first connector 11 to the first component 20 via a threaded connection improves connection strength and reliability, and the threaded connection also facilitates installation.

[0108] Continue reading Figure 1 The second connector 12 has an overall rotational structure and is sleeved onto the second connecting segment 112. The second connector 12 includes a hub 120 and a first engaging portion 121 disposed on the outer peripheral surface of the hub 120. The inner wall of the mounting hole 31 is provided with a second engaging portion 311 that engages with the first engaging portion 121. Furthermore, the second connector 12 is constructed to be elastic so that when the second connector 12 is installed in the mounting hole 31, the first engaging portion 121 and the second engaging portion 311 engage with each other to restrict the radial degree of freedom of the second connector 12 and the second component 30. In this application, the hub 120 refers to a cylindrical structure, and the hub 120 is provided with a through hole through which the second connector 12 is sleeved onto the second connecting segment 112.

[0109] It can be understood that the second connector 12 is constructed to be elastic, meaning that the second connector 12 can deform at least in the radial direction of the hub 120 so that the second connector 12 can be squeezed into the mounting hole 31 of the second member 30 under the action of external force, and connected to the second engagement portion 311 of the mounting hole 31 of the second member 30 by the deformation recovery force of the second connector 12 itself.

[0110] Thus, by providing a flexible second connector 12, it is easy to insert the second connector 12 into the mounting hole 31 of the second component 30, and the connection reliability of the second connector 12 and the second component 30 can also be improved; by providing a first engaging part 121 and a second engaging part 311 to connect the second connector 12 and the second component 30, the pull-out resistance of the second connector 12 is improved, thereby improving the connection reliability.

[0111] Specifically, the first engagement portion 121 has a first root portion connected to the hub portion 120 and a first top edge spaced apart from the first root portion; the width dimension of the first engagement portion 121 decreases along the direction from the first root portion to the first top edge, and the width dimension of the first engagement portion 121 is the dimension of the first engagement portion 121 in the first direction.

[0112] More specifically, a first leading edge and a first trailing edge of the first engaging portion 121 are defined between the first root portion and the hub portion 120; along the first direction, the first leading edge is located upstream of the first trailing edge; the angle formed between the direction of the first leading edge pointing to the first top edge and the first direction is a first angle; the angle formed between the direction of the first trailing edge pointing to the first top edge and the first direction is a second angle. The first angle and the second angle are both greater than 0° and less than or equal to 90°. Optionally, along the first direction, the first trailing edge of a preceding first engaging portion 121 becomes the first leading edge of a subsequent first engaging portion 121; that is, in the first direction, the first engaging portions 121 are continuously arranged without gaps.

[0113] It can be understood that a decreasing trend refers to a situation where, from the overall perspective of change, a certain indicator generally decreases, but in the local process of change, the indicator may remain unchanged or increase; gradual decrease refers to a continuous decrease in a certain indicator, but the magnitude of the decrease may be uniform or non-uniform; linear decrease refers to a certain indicator decreasing in the form of a linear function (y = kx + b). In the above embodiment, a certain indicator specifically refers to the width dimension of the first engagement portion 121. In the following text, a certain indicator may also refer to the width dimension of the second engagement portion 311. In this application, the meanings of decreasing trend, gradual decrease, and linear decrease are the same as described above, and therefore will not be repeated in the embodiments below.

[0114] In some embodiments, the first angle is equal to the second angle (e.g., Figure 1 (As shown). Optionally, the first angle is 60 degrees.

[0115] Figure 2 This is a schematic diagram of the structure of the first biting part and the second biting part biting in one embodiment of the present invention.

[0116] See Figure 2 In some embodiments, the direction in which the first leading edge points to the first top edge is perpendicular to the first direction. That is, the first angle is 90 degrees.

[0117] Figure 3 This is a partially enlarged schematic diagram of the first occlusal portion in one embodiment of the present invention.

[0118] See Figure 3In some embodiments, along the first direction, the first top edge is located upstream of the first leading edge. Further, the first angle is greater than or equal to 60 degrees and less than 90 degrees.

[0119] Figure 4 This is a partially enlarged schematic diagram of the first occlusal portion in another embodiment of the present invention.

[0120] See Figure 4 In some embodiments, along the first direction, the first top edge is located between the first leading edge and the first trailing edge, and the magnitudes of the first angle and the second angle are not equal. Further, the range of the first angle is greater than or equal to 80 degrees and less than 90 degrees. See again... Figure 1 Specifically, the second engagement portion 311 has a second root portion connected to the inner wall of the mounting hole 31, and a second top edge spaced apart from the second root portion; along the direction from the second root portion to the second top edge, the width dimension of the second engagement portion 311 tends to decrease, and the width dimension of the second engagement portion 311 is the dimension of the second engagement portion 311 in the first direction.

[0121] More specifically, the second root portion and the inner wall of the mounting hole 31 define the second leading edge and the second trailing edge of the second engaging portion 311. Along the first direction, the second leading edge is located upstream of the second trailing edge. The angle formed between the direction of the second leading edge pointing towards the second top edge and the first direction is a third angle; the angle formed between the direction of the second trailing edge pointing towards the second top edge and the first direction is a fourth angle. The third and fourth angles are both greater than 0° and less than or equal to 90°. Optionally, along the first direction, the second trailing edge of the preceding second engaging portion 311 becomes the second leading edge of the following second engaging portion 311. That is, in the first direction, the second engaging portions 311 are continuously arranged without gaps.

[0122] It is understandable that the first occlusal portion 121 and the second occlusal portion 311 can be continuously arranged or discontinuously arranged.

[0123] In some embodiments, the third angle is equal to the fourth angle. Optionally, the third angle is 60 degrees (e.g., ...). Figure 1 (As shown).

[0124] It is understood that when the third angle and the fourth angle are equal and both are 60 degrees, the first engagement portion 121 can be any one of the four embodiments described above. That is, in some embodiments, the first angle, the second angle, the third angle, and the fourth angle are equal and both are 60 degrees (e.g., ...). Figure 1(As shown). That is, the first engagement portion 121 has a common triangular external thread structure. In this way, the second connector 12 and the second component 30 are connected by threads, which can improve the reliability and convenience of the connection. In some embodiments, the third angle and the fourth angle are equal and both are 60 degrees; the direction of the first leading edge pointing to the first top edge is perpendicular to the first direction, that is, the first angle is 90 degrees (e.g.). Figure 2 (As shown). In some embodiments, the third angle and the fourth angle are equal and both are 60 degrees; along the first direction, the first top edge is located upstream of the first leading edge, and further, the range of the first angle is greater than or equal to 60 degrees and less than 90 degrees. In some embodiments, the third angle and the fourth angle are equal and both are 60 degrees; along the first direction, the first top edge is located between the first leading edge and the first trailing edge, and the magnitudes of the first angle and the second angle are not equal, and further, the range of the first angle is greater than or equal to 80 degrees and less than 90 degrees.

[0125] In some embodiments, the first angle is equal to the fourth angle, and the second angle is equal to the third angle. That is, the first occlusal portion 121 and the second occlusal portion 311 are fully adapted.

[0126] Figure 5 This is a schematic diagram of the assembly of the connecting node with the first component and the second component in another embodiment of the present invention.

[0127] See Figure 5 Specifically, in some embodiments, the direction from the second trailing edge to the second top edge is perpendicular to the first direction, that is, the fourth angle is 90 degrees. At this time, the direction from the first leading edge to the first top edge is perpendicular to the first direction, that is, the first angle is 90 degrees.

[0128] Specifically, in some embodiments, along the first direction, the second trailing edge is located upstream of the second top edge. Further, the fourth angle ranges from greater than or equal to 60 degrees to less than 90 degrees. In this case, along the first direction, the first top edge is located upstream of the first leading edge, and the first angle ranges from greater than or equal to 60 degrees to less than 90 degrees.

[0129] Specifically, in some embodiments, along the first direction, the second top edge is located between the second leading edge and the second trailing edge, and the third angle and the fourth angle are not equal in magnitude. Further, the fourth angle is greater than or equal to 80 degrees and less than 90 degrees. In this case, along the first direction, the first top edge is located between the first leading edge and the first trailing edge, and the first angle and the second angle are not equal in magnitude, and the first angle is greater than or equal to 80 degrees and less than 90 degrees.

[0130] In some embodiments, the first engagement portion 121 and the second engagement portion 311 are threaded, and the first engagement portion 121 and the second engagement portion 311 are configured to extend along a spiral line. When the first engagement portion 121 and the second engagement portion 311 are threaded, the second connector 12 has only one first engagement portion 121 spirally arranged along a spiral line, and the second component 30 also has only one second engagement portion 311 spirally arranged along a spiral line.

[0131] In some embodiments, the first engagement portion 121 and the second engagement portion 311 are teeth, and the first engagement portion 121 and the second engagement portion 311 are configured to extend along the circumferential direction of the hub portion 120. When the first engagement portion 121 and the second engagement portion 311 are teeth, the second connector 12 is provided with a plurality of first engagement portions 121 along the first direction, each of the first engagement portions 121 extending along the circumferential direction of the hub portion 120, and the second component 30 is provided with a plurality of second engagement portions 311 along the first direction, each of the second engagement portions 311 extending along the circumferential direction of the hub portion 120.

[0132] In some embodiments, the second connector 12 is provided with at least one opening extending through the hub 120 in the radial direction, and the at least one opening extends through at least one end of the second connector 12 in the first direction.

[0133] Figure 6 This is a schematic diagram of a structure in one embodiment of the present invention, showing that the second connector only has a first opening.

[0134] See Figure 6 Specifically, the second connector 12 has at least one first opening 123, which extends through one end of the second connector 12 away from the first connecting segment 111, so that the second connector 12 can deform along the radial direction of the hub 120. Optionally, along the first direction, the size of the first opening 123 in the circumferential direction of the hub 120 tends to increase; further, the size of the first opening 123 in the circumferential direction of the hub 120 gradually increases; and even further, the size of the first opening 123 in the circumferential direction of the hub 120 increases linearly.

[0135] It can be understood that "increasing trend" refers to an overall increase in a certain indicator from the perspective of the overall change process, but in the local change process, the indicator may remain unchanged or decrease; "gradual increase" refers to a continuous increase in a certain indicator, but the magnitude of the increase may be uniform or non-uniform; "linear increase" refers to a certain indicator increasing in the form of a linear function (y = kx + b). In the above embodiment, a certain indicator specifically refers to the dimension of the first opening 123 along the circumferential direction of the hub 120. In the following text, a certain indicator may also be the dimension of the third opening 125 along the circumferential direction of the hub 120, the dimension of the second connecting segment 112 and the second connecting member 12 along the circumferential direction of the hub 120, and the dimension of the inner peripheral wall of the second connecting member 12 along the circumferential direction of the hub 120. In this application, the meanings of increasing trend, gradual increase, and linear increase are the same as described above, and therefore, they will not be repeated in the following embodiments.

[0136] Thus, by providing the first opening 123, the second connector 12 can deform in the radial direction of the hub 120. Since the end of the second connector 12 away from the first member 20 is subjected to compressive force for a longer time than the end of the second connector 12 closer to the first member 20, it requires greater deformation capacity. Therefore, along the first direction from the first connector 11 to the second connector 12, the size of the first opening 123 in the circumferential direction of the hub 120 tends to increase, so as to improve the deformation capacity of the end of the second connector 12 away from the first member 20.

[0137] Optionally, multiple first openings 123 are provided, and all first openings 123 are spaced apart along the circumferential direction of the hub portion 120. In this way, by providing multiple first openings 123, the deformation capability of the second connector 12 can be further improved.

[0138] Figure 7 This is a schematic diagram of the structure of the second connector having first and second openings in one embodiment of the present invention.

[0139] See Figure 7 Furthermore, the second connector 12 has at least one second opening 124, which penetrates one end of the second connector 12 near the first connecting segment 111; the first opening 123 and the second opening 124 are staggered along the circumferential direction of the hub 120 to avoid the first opening 123 and the second opening 124 from connecting and causing the second connector 12 to disconnect.

[0140] Figure 8 For the present invention Figure 7 A diagram showing the view from below; Figure 9 For the present invention Figure 7 A top-down view; Figure 10This is a schematic diagram of the structure of the second connector having first and second openings in another embodiment of the present invention.

[0141] Optionally, see Figure 7 In the first direction, the sum of the dimensions of any first opening 123 and any second opening 124 along the first direction is greater than or equal to the dimension of the second connector 12 along the first direction; see reference Figure 8 and Figure 9 The number of openings 123 in the first opening is greater than the number of openings 124 in the second opening; see also Figure 10 The dimension of the first opening 123 along the circumferential direction of the hub 120 is greater than the dimension of the second opening 124 along the circumferential direction of the hub 120.

[0142] This improves the deformation capability of the end of the second connector 12 away from the first connecting segment 111, which is beneficial for the second connector 12 to be inserted into the mounting hole 31 of the second component 30.

[0143] Figure 11 This is a schematic diagram of a structure in one embodiment of the present invention, showing that the second connector has first, second and third openings.

[0144] See Figure 11 Furthermore, the second connector 12 has a third opening 125 extending through it along a first direction; along the first direction, the dimension of the third opening 125 increases in the circumferential direction of the hub 120; further, the dimension of the third opening 125 gradually increases in the circumferential direction of the hub 120; even further, the dimension of the third opening 125 increases linearly in the circumferential direction of the hub 120. The first opening 123, the second opening 124, and the third opening 125 are arranged alternately along the circumferential direction of the hub 120. This improves the deformation capacity of the end of the second connector 12 furthest from the first member 20, thereby facilitating the installation and connection of the second connector 12.

[0145] Figure 12 This is a schematic diagram of a structure in one embodiment of the present invention where the second connector only has a third opening; Figure 13 This is a schematic diagram of the structure of the second connector having first and third openings in one embodiment of the present invention.

[0146] See Figure 12 In some embodiments, the second connector 12 only has a third opening 125. See also... Figure 13In some embodiments, the second connector 12 has a third opening 125 and at least one first opening 123, and the first opening 123 and the third opening 125 are staggered along the circumferential direction of the hub 120. It can be understood that in this application, in order for the second connector 12 to be smoothly installed on the second component 30, the end of the second connector 12 away from the first component 20 must have deformation capability. Therefore, the second connector 12 of this application may only have a first opening 123 or only have a third opening 125, or it may include a first opening 123 and a second opening 124, or it may include a first opening 123 and a third opening 125, or it may simultaneously include a first opening 123, a second opening 124 and a third opening 125.

[0147] Figure 14 This is an assembly diagram showing the first component having a mounting groove in one embodiment of the present invention.

[0148] See Figure 14 The first component 20, near the second component 30, has a mounting groove 22 extending through it along a first direction; the second connector 12, along the first direction, has its end away from the first opening 123 located within the mounting groove 22. Specifically, the first component 20, near the second component 30, has a mounting groove 22 communicating with the connecting hole 21. The mounting groove 22 is coaxially arranged with the connecting hole 21 and extends through the first component 20 near the second component 30 along the first direction. When the second connector 12 only has the first opening 123, the end of the second connector 12 away from the first opening 123 along the first direction is located within the mounting groove 22. Figure 17 Figure 15 This is an assembly diagram showing a connection node with a limiting component in one embodiment of the present invention.

[0149] See Figure 15 The connecting node 10 also includes a limiting member 13. The limiting member 13 has a rotating body structure and is located at the end of the second connecting segment 112 away from the first connecting segment 111. The limiting member 13 is used to cooperate with the second connecting member 12 to at least limit the radial degree of freedom of the second connecting member 12 and the second component 30.

[0150] Specifically, the limiting member 13 has a first limiting surface 131, and the second connecting member 12 has a second limiting surface 122 on the side near the limiting member 13 that can abut against the first limiting surface 131; the orthographic projection of the first limiting surface 131 on the reference surface and the orthographic projection of the second limiting surface 122 on the reference surface at least partially overlap; the reference surface is a plane perpendicular to the first direction.

[0151] More specifically, the first limiting surface 131 has a first edge and a second edge surrounding the first connector 11, the first edge being closer to the first connector 11 than the second edge; along a first direction, the first edge is located upstream of the second edge; the direction from the first edge to the second edge is angled with the first direction. The second limiting surface 122 has a third edge and a fourth edge surrounding the first connector 11, the third edge being closer to the first connector 11 than the fourth edge; along a first direction, the third edge is located upstream of the fourth edge; the direction from the third edge to the fourth edge is angled with the first direction.

[0152] It is understandable that the first limiting surface 131 and the second limiting surface 122 can be set parallel to each other or at an angle.

[0153] In some embodiments, the limiting member 13 is detachably sleeved on the end of the second connecting segment 112 away from the first connecting segment 111 (e.g., Figure 15 (As shown). In other embodiments, the limiting member 13 and the second connecting segment 112 may be integrally formed (e.g. Figure 1 , Figure 2 , Figure 5 and Figure 14 (As shown).

[0154] Thus, by setting a limiting member 13, and the limiting member 13 having a first limiting surface 131, and the second connecting member 12 having a second limiting surface 122 that cooperates with the first limiting surface 131, when the first connecting member 11 is subjected to tension, the limiting member 13 will exert pressure on the second connecting member 12 in the radial direction of the hub portion 120, so that the second connecting member 12 applies a force in the radial direction of the hub portion 120 to the mounting hole 31 of the second component 30, thereby improving the pull-out resistance of the connecting node 10 and preventing the second connecting member 12 from coming out of the mounting hole 31.

[0155] Figure 16 This is a schematic diagram of a connection node with two limiting members in one embodiment of the present invention.

[0156] See Figure 16In some embodiments, at least two limiting members 13 are provided, wherein at least one limiting member 13 is provided at the end of the second connecting segment 112 away from the first connecting segment 111, and at least one limiting member 13 is provided at the end of the second connecting segment 112 close to the first connecting segment 111. It is understood that when there are multiple limiting members 13, they can all be provided at the same end of the second connecting segment 112, or they can be provided at opposite ends of the second connecting segment 112 along the first direction, or they can be provided at any position of the second connecting segment 112 along the first direction. For example, the dimension of the second connecting segment 112 in the radial direction along the hub 120 is larger than the dimension of the first connecting segment 111 in the radial direction along the hub 120, so that a mounting surface 1121 is formed on the second connecting segment 112, and the limiting member 13 can be provided on the mounting surface 1121. Alternatively, an annular groove can be formed along the circumferential direction of the second connecting segment 112, with the limiting member 13 partially disposed within the annular groove, and the first limiting surface 131 located outside the annular groove. No further restrictions are placed on the specific installation position and structure of the limiting component 13, as long as it meets the above-mentioned limiting requirements.

[0157] See Figure 1 , Figure 2 , Figure 5 and Figure 14 In some embodiments, the outer peripheral wall of the first connector 11 and the inner peripheral wall of the second connector 12 together define a gap 14 in the radial direction of the hub 120. Thus, by providing the first connector 11 and the second connector 12 at intervals in the radial direction of the hub 120, space can be provided for the deformation of the second connector 12, thereby enabling the second connector 12 to be smoothly connected to the side wall of the mounting hole 31 of the second member 30.

[0158] Figure 17 This is an assembly diagram showing a gap between the first connector and the second connector in another embodiment of the present invention; Figure 18 This is an assembly diagram showing a gap between the first connector and the second connector in another embodiment of the present invention.

[0159] See Figure 17 and Figure 18 In some embodiments, the extension direction of the gap 14 is angled to the first direction. This increases the pull-out resistance of the second connector 12, thereby improving the reliability of the connection.

[0160] See Figure 17Specifically, in one embodiment, along the first direction, the dimensions of the second connecting segment 112 and the second connecting member 12 increase in the circumferential direction of the hub 120; further, the dimensions of the second connecting segment 112 and the second connecting member 12 gradually increase in the circumferential direction of the hub 120; even further, the dimensions of the second connecting segment 112 and the second connecting member 12 increase linearly in the circumferential direction of the hub 120. That is, the second connecting segment 112 is tapered, and the second connecting member 12 is tapered to mate with the outer peripheral wall of the second connecting segment 112. It can be understood that, in this embodiment, the inner peripheral wall of the mounting hole 31 is tapered to mate with the outer peripheral wall of the second connecting member 12.

[0161] See Figure 18 Specifically, in another embodiment, along the first direction, the inner peripheral wall of the second connecting segment 112 and the second connecting member 12 increases in size along the radial direction of the mounting hole 31, while the outer peripheral wall of the second connecting member 12 remains unchanged in size along the radial direction of the mounting hole 31. Further, the inner peripheral wall of the second connecting member 12 gradually increases in size along the circumferential direction of the hub 120; even further, the inner peripheral wall of the second connecting member 12 increases linearly along the circumferential direction of the hub 120. That is, the second connecting segment 112 is tapered, and the inner peripheral wall of the second connecting member 12 is tapered to match the outer peripheral wall of the second connecting segment 112, but the outer peripheral wall of the second connecting member 12 is circular.

[0162] Thus, by setting the second connecting section 112 of the first connecting member 11, which is generally conical in shape, the inner peripheral wall of the second connecting member 12, and the inner peripheral wall of the second connecting member 12 and the mounting hole 31 to be generally conical, when the first connecting member 11 is subjected to tension, the first connecting member 11 will exert pressure on the second connecting member 12 in the radial direction of the hub 120, thereby causing the second connecting member 12 to apply a force in the radial direction of the hub 120 to the mounting hole 31 of the second member 30, thereby improving the pull-out resistance of the connecting node 10 and preventing the second connecting member 12 from coming out of the mounting hole 31.

[0163] Figure 19 For the present invention Figure 17 The diagram shows a structure with limiting components at the connecting nodes.

[0164] See Figure 19 In some embodiments, Figure 17The connecting node 10 also includes a limiting member 13, which is fitted onto the end of the second connecting segment 112 away from the first connecting segment 111. The inner peripheral wall of the limiting member 13 increases in size along the radial direction of the hub 120; further, the inner peripheral wall of the limiting member 13 gradually increases in size along the circumferential direction of the hub 120; and even further, the inner peripheral wall of the limiting member 13 increases linearly along the circumferential direction of the hub 120. That is, the inner peripheral wall of the limiting member 13 is tapered to facilitate the engagement with the second connecting segment 112. It is understood that the limiting member 13 also includes a first limiting surface 131, which will not be described in detail here.

[0165] Figure 20 For the present invention Figure 18 The diagram shows a structure with limiting components at the connecting nodes.

[0166] See Figure 20 In some embodiments, Figure 18 The connecting node 10 also includes a limiting member 13, which is fitted onto the end of the second connecting segment 112 away from the first connecting segment 111. The inner peripheral wall of the limiting member 13 increases in size along the radial direction of the hub 120. It can be understood that the structure of the limiting member 13 is similar to... Figure 19 The limiting component 13 is basically the same as that in the previous one, so it will not be described again here.

[0167] Thus, by setting the limiting member 13, the pull-out resistance of the second connector 12 can be further enhanced, and the stability and reliability of the connection node 10 can be improved.

[0168] Figure 21 For the present invention Figure 17 A schematic diagram of a structure in which the connecting nodes are equipped with elastic elements; Figure 22 For the present invention Figure 18 The diagram shows a structure with elastic elements at the connecting nodes.

[0169] See Figure 21 and Figure 22 In some embodiments, Figure 17 and Figure 18 The connecting node 10 is further provided with an elastic element 15, which is located between the first connecting member 11 and the second connecting member 12, and within the gap 14. The elastic element 15 increases in size along the circumferential direction of the hub 120; further, the elastic element 15 gradually increases in size along the circumferential direction of the hub 120; and even further, the elastic element 15 increases linearly along the circumferential direction of the hub 120. That is, the elastic element 15 is tapered to better fit with the second connecting section 112. Figure 23 This is a schematic diagram of the assembly of the connecting nodes in one embodiment of the present invention; Figure 24 As shown in one embodiment of the present invention Figure 23 Schematic diagram of the cross section of AA.

[0170] See Figure 23 and Figure 24 The second connector 12 includes multiple crest segments 126 and multiple trough segments 127, which are alternately connected in a ring shape along the circumference of the hub 120. Each crest segment 126 is provided with a first engagement part 121. Optionally, the second connector 12 is a transverse corrugated spring; the number of crest segments 126 is greater than or equal to 4 and less than or equal to 24.

[0171] Figure 25 This is a schematic diagram of the assembly of the connecting node in another embodiment of the present invention; Figure 26 For the present invention Figure 25 Schematic diagram of cross section of BB.

[0172] See Figure 25 and Figure 26 The second connector 12 includes multiple crest segments 126 and multiple trough segments 127, which are alternately connected along a first direction. Each crest segment 126 is provided with a first engagement portion 121. Optionally, multiple first engagement portions 121 are arranged along the first direction on each crest segment 126. Optionally, the second connector 12 is a longitudinal corrugated spring; the number of crest segments 126 is greater than or equal to 4 and less than or equal to 24.

[0173] Figure 27 For the present invention Figure 23 A schematic diagram of a structure in which the connecting nodes are equipped with limiting components; Figure 28 For the present invention Figure 25 The diagram shows a structure with limiting components at the connecting nodes.

[0174] See Figure 27 In some embodiments, Figure 23 The connecting node 10 is also provided with a limiting member 13, which is sleeved on the end of the second connecting segment 112 away from the first connecting segment 111.

[0175] See Figure 28 In some embodiments, Figure 25 The connecting node 10 is also provided with a limiting member 13, which is sleeved on the end of the second connecting segment 112 away from the first connecting segment 111.

[0176] Understandable, although Figure 23 and Figure 27 The specific shape of the first occlusal part 121 in the middle is different. Figure 25 and Figure 28 The specific shape of the first engaging portion 121 may differ, but the limiting member 13 can also be provided in... Figure 23 and Figure 25 middle.

[0177] Figure 29 This is a schematic diagram of a connection node with an elastic element in one embodiment of the present invention.

[0178] See Figure 29 In some embodiments, the connecting node 10 further includes an elastic element 15, which is disposed between the first connecting member 11 and the second connecting member 12 and located within the gap 14. The elastic element 15 can also elastically deform radially along the mounting hole 31, allowing the second connecting member 12 to smoothly complete its elastic deformation. After the second connecting member 12 is installed into the mounting hole 31, the elastic element 15, under its own elastic force, pushes the second connecting member 12 against the inner wall of the mounting hole 31, thereby making the installation of the second connecting member 12 and the mounting hole 31 more secure. Furthermore, the elastic element 15 fills the gap 14 between the second connecting member 12 and the first connecting member 11, making the connection between the first connecting member 11 and the second connecting member 12 even tighter, thus making the connection of the connecting node 10 more stable.

[0179] Figure 30 For the present invention Figure 29 A cross-sectional view of the C-section.

[0180] Furthermore, the elastic element 15 includes a plurality of protrusions 151 and a plurality of recesses 152. See also... Figure 30 Specifically, in some embodiments, multiple protrusions 151 and multiple recesses 152 are alternately connected in a ring structure along the circumference of the second connector 12. The alternating connection of the protrusions 151 and recesses 152 forms a ring structure, thereby creating a cylindrical structure for the second connector 12. During actual installation, the second connector 12 is fitted onto the second connecting section 112 of the first connector 11. The recesses 152 of the second connector 12 can fit snugly against the first connector 11, while the protrusions 151 of the second connector 12 will have a certain gap with the first connector 11. Therefore, when the second connector 12 is inserted into the mounting hole 31, the protrusions 151 can contract radially inward along the first connector 11, allowing the second connector 12 to be squeezed into the mounting hole 31.

[0181] Figure 31 This is a schematic diagram of the elastic element in another embodiment of the present invention.

[0182] See Figure 31In some specific embodiments, multiple protrusions 151 and multiple recesses 152 are alternately connected in a ring structure along a first direction. Each protrusion 151 and each recess 152 are arranged in a ring, and the multiple protrusions 151 and multiple recesses 152 are alternately connected along the axial direction of the mounting hole 31, thereby forming the cylindrical structure of the second connector 12. In actual installation, the protrusions 151 in the second connector 12 are spaced apart from the first connector 11. When the second connector 12 is inserted into the mounting hole 31, the protrusions 151 are squeezed by the sidewall of the mounting hole 31, thereby causing the protrusions 151 to elastically contract inward along the radial direction of the mounting hole 31, thereby causing the second connector 12 to be squeezed into the mounting hole 31 and connected to the second component 30.

[0183] It is understood that multiple protrusions 151 and multiple recesses 152 can be alternately connected along the first direction or alternately connected along the circumference of the second connector 12 to form a cylindrical structure, and ensure that there is a gap between the protrusions 151 and the first connector 11, so that the second connector 12 has a shrinkage space in the radial direction of the mounting hole 31, ensuring that the second connector 12 can be smoothly inserted into the mounting hole 31 and connected to the inner wall of the mounting hole 31.

[0184] Optionally, the number of protrusions 151 is greater than or equal to 4 and less than or equal to 24. When the number of protrusions 151 is large, the elastic force of the second connector 12 will be relatively large, but the distance between the protrusions 151 and the first connector 11 will be relatively small. This results in a smaller range of elastic contraction of the second connector 12, thus making the installation of the second connector 12 more difficult. When the number of protrusions 151 is small, the elastic force of the second connector 12 will be relatively small, but the distance between the protrusions 151 and the first connector 11 will be relatively large. This results in a larger range of elastic contraction of the second connector 12, thus making the installation of the second connector 12 easier.

[0185] Therefore, in practical applications, the number of protrusions 151 in the second connector 12 should not be too many or too few. In this embodiment, the number of protrusions 151 is greater than or equal to 4 and less than or equal to 24, which is a suitable number. In this embodiment, the elasticity of the second connector 12 can meet the usage requirements of the connecting node 10, and the installation difficulty of the second connector 12 is not too high, ensuring the normal installation of the second connector 12.

[0186] Figure 32 This is a schematic diagram of the elastic element in another embodiment of the present invention.

[0187] See Figure 32In some embodiments, the elastic element 15 is a spiral spring wound around the outside of the second connecting section 112. One end of the spiral spring is connected to the outer wall of the second connecting section 112, and the other end is connected to the inner wall of the second connecting member 12. The spiral spring is wound around the outside of the second connecting section 112, and the second connecting member 12 is sleeved on the second connecting section 112, thereby installing the spiral spring between the second connecting member 12 and the second connecting section 112. One end of the spiral spring is connected to the first connecting member 11, and the other end abuts against the inner wall of the second connecting member 12. Therefore, when the second connecting member 12 deforms radially along the mounting hole 31, the inner wall of the second connecting member 12 will compress the spiral spring, causing the spiral spring to deform as well. After the second connector 12 is installed, the spiral spring is in a contracted state. Therefore, the spiral spring will push the second connector 12 against the inner wall of the mounting hole 31, thereby making the connection between the second connector 12 and the mounting hole 31 tighter and making the connection effect of the connection node 10 more stable.

[0188] It should be noted that, Figure 21 and Figure 22 The specific structure of the elastic element 15 can be related to Figures 29 to 32 The structure of the intermediate elastic element 15 may be the same or different, and no limitation is made here.

[0189] Figure 33 This is a top view of the second component in one embodiment of the present invention.

[0190] It should be noted that when more than 10 connection nodes are set to connect the first component 20 and the second component 30, the gap 14 can compensate for the accuracy error of the mounting hole 31 opened in the second component 30, thereby ensuring that all connection nodes 10 can be installed smoothly. When the first component 20 and the second component 30 need to be connected through multiple connection nodes 10 (see...) Figure 33 The first component 20 and the second component 30 have 6 mounting holes. When these components are connected, it is necessary to ensure that all 6 second connecting parts 12 can fit together well. This increases the machining accuracy requirements of the structural components. However, the connection nodes 10 of this application have a certain gap 14 between the second connecting parts 12 and the first connecting parts 11, and the elastic element 15 can be compressed. All 6 connection structures use the connection nodes 10 of this application. This can overcome the situation where the 6 connection structures cannot be fully inserted due to machining errors. Moreover, the elastic element 15 can rebound after being compressed. Multiple connection nodes 10 will automatically balance the elastic force under the elastic force of the elastic element 15 to achieve the best matching state. This makes the 6 connection nodes 10 connecting the first component 20 and the second component 30 more tightly connected in the radial direction perpendicular to the mounting hole 31 and less prone to shaking.

[0191] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0192] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A connecting node for connecting a first component and a second component, the second component having a mounting hole extending along a first direction, characterized in that, The connection node includes: A first connector includes a first connecting segment and a second connecting segment sequentially disposed along the first direction, wherein the first connecting segment is used to connect the first component; and The second connector is sleeved on the second connecting segment. The second connector includes a hub and a first engagement portion disposed on the outer peripheral surface of the hub. The inner wall of the mounting hole is provided with a second engagement portion that engages with the first engagement portion. The second connector is configured to be elastic, such that when the second connector is installed in the mounting hole, the first engagement portion and the second engagement portion engage with each other to restrict the radial degree of freedom of the second connector and the second component. The second connector has at least one first opening, and at least one first opening extends through the end of the second connector away from the first connecting segment; The second connector has at least one second opening, and the at least one second opening extends through one end of the second connector near the first connecting segment; The outer peripheral wall of the first connector and the inner peripheral wall of the second connector together define a gap along the radial direction of the hub, providing space for the deformation of the second connector.

2. The connection node according to claim 1, characterized in that, The first engagement portion has a first root portion connected to the hub portion and a first top edge spaced apart from the first root portion; the width dimension of the first engagement portion decreases along the direction from the first root portion to the first top edge, and the width dimension of the first engagement portion is the dimension of the first engagement portion in the first direction.

3. The connection node according to claim 2, characterized in that, The first root portion and the hub portion define a first leading edge and a first trailing edge of the first engaging portion; along the first direction, the first leading edge is located upstream of the first trailing edge; The angle formed between the direction of the first leading edge pointing to the first top edge and the first direction is a first angle; the angle formed between the direction of the first trailing edge pointing to the first top edge and the first direction is a second angle. The first angle and the second angle are both greater than 0 and less than or equal to 90 degrees.

4. The connection node according to claim 3, characterized in that, The first angle is equal to the second angle.

5. The connection node according to claim 4, characterized in that, The first angle is 60 degrees.

6. The connection node according to claim 3, characterized in that, The direction in which the first leading edge points to the first top edge is perpendicular to the first direction.

7. The connection node according to claim 3, characterized in that, Along the first direction, the first top edge is located upstream of the first leading edge.

8. The connection node according to claim 7, characterized in that, The first angle is greater than or equal to 60 degrees and less than 90 degrees.

9. The connection node according to claim 3, characterized in that, Along the first direction, the first top edge is located between the first front edge and the first rear edge, and the first angle and the second angle are not equal in magnitude.

10. The connection node according to claim 9, characterized in that, The first angle is greater than or equal to 80 degrees and less than 90 degrees.

11. The connection node according to claim 3, characterized in that, The second engagement portion has a second root portion connected to the inner wall of the mounting hole, and a second top edge spaced apart from the second root portion; the width dimension of the second engagement portion decreases along the direction from the second root portion to the second top edge, and the width dimension of the second engagement portion is the dimension of the second engagement portion in the first direction.

12. The connection node according to claim 11, characterized in that, The second root portion and the inner wall of the mounting hole define the second front edge and the second rear edge of the second engagement portion. Along the first direction, the second front edge is located upstream of the second rear edge. The angle formed between the direction of the second front edge pointing to the second top edge and the first direction is a third angle. The angle formed between the direction of the second rear edge pointing to the second top edge and the first direction is a fourth angle. The range of the third angle and the fourth angle is greater than 0 and less than or equal to 90 degrees.

13. The connection node according to claim 12, characterized in that, The third angle is equal to the fourth angle.

14. The connection node according to claim 13, characterized in that, The third angle is 60 degrees.

15. The connection node according to claim 12, characterized in that, The first angle is equal to the fourth angle, and the second angle is equal to the third angle.

16. The connection node according to claim 15, characterized in that, The direction in which the second trailing edge points to the second top edge is perpendicular to the first direction.

17. The connection node according to claim 14, characterized in that, Along the first direction, the second trailing edge is located upstream of the second top edge.

18. The connection node according to claim 17, characterized in that, The range of the fourth angle is greater than or equal to 60 degrees and less than 90 degrees.

19. The connection node according to claim 14, characterized in that, Along the first direction, the second top edge is located between the second front edge and the second rear edge, and the third angle and the fourth angle are not equal in size.

20. The connection node according to claim 19, characterized in that, The range of the fourth angle is greater than or equal to 80 degrees and less than 90 degrees.

21. The connection node according to any one of claims 1-20, characterized in that, The first engagement portion is configured to extend along a spiral line; or The first engagement portion is configured to be arranged along the circumferential direction of the hub portion.

22. The connection node according to any one of claims 1-20, characterized in that, The second connector has at least one opening extending through the hub in the radial direction, and at least one of the openings extends through one end of the second connector in the first direction.

23. The connection node according to claim 1, characterized in that, Along the first direction, the size of the first opening increases in the circumferential direction of the hub.

24. The connection node according to claim 1, characterized in that, The first opening is provided in multiple ways, and all the first openings are spaced apart along the circumferential direction of the hub.

25. The connection node according to claim 1, characterized in that, The first opening and the second opening are arranged alternately along the circumferential direction of the hub.

26. The connection node according to any one of claims 1, 23-24, characterized in that, The second connector has a third opening that extends through the second connector along the first direction; along the first direction, the size of the third opening increases in the circumferential direction of the hub.

27. The connection node according to any one of claims 1, 23-24, characterized in that, The first component has a mounting groove extending through it along the first direction at one end near the second component; the second connector is located in the mounting groove at one end along the first direction away from the first opening.

28. The connection node according to claim 1, characterized in that, The connecting node further includes a limiting member, which is located at the end of the second connecting segment away from the first connecting segment; The limiting member is used to cooperate with the second connecting member to at least restrict the radial degree of freedom of the second connecting member and the second component.

29. The connection node according to claim 28, characterized in that, The limiting member has a first limiting surface, and the second connecting member has a second limiting surface on the side near the limiting member that can abut against the first limiting surface; The orthographic projection of the first limiting surface onto the reference plane and the orthographic projection of the second limiting surface onto the reference plane at least partially overlap; The reference plane is a plane perpendicular to the first direction.

30. The connection node according to claim 29, characterized in that, The first limiting surface has a first edge and a second edge surrounding the first connector, the first edge being closer to the first connector than the second edge; Along the first direction, the first edge is located upstream of the second edge; the direction from the first edge to the second edge is set at an angle to the first direction.

31. The connection node according to claim 29, characterized in that, The second limiting surface has a third edge and a fourth edge surrounding the first connector, the third edge being closer to the first connector than the fourth edge; Along the first direction, the third edge is located upstream of the fourth edge; the direction in which the third edge points to the fourth edge is set at an angle to the first direction.

32. The connection node according to claim 28, characterized in that, The limiting member is detachably fitted onto the end of the second connecting segment away from the first connecting segment.

33. The connection node according to claim 28, characterized in that, The limiting member is provided in at least two, wherein at least one of the limiting members is provided at the end of the second connecting segment away from the first connecting segment; and / or At least one of the limiting members is located at one end of the second connecting segment near the first connecting segment.

34. The connection node according to claim 1, characterized in that, The direction of the gap is angled to the first direction.

35. The connection node according to claim 34, characterized in that, Along the first direction, the dimensions of the second connecting segment and the second connecting member increase in the circumferential direction of the hub.

36. The connection node according to claim 34, characterized in that, Along the first direction, the inner peripheral wall of the second connecting segment and the second connector tends to increase in size along the radial direction of the mounting hole, while the outer peripheral wall of the second connector remains unchanged in size along the radial direction of the mounting hole.

37. The connection node according to claim 35 or 36, characterized in that, The connection node further includes an elastic element; the elastic element is disposed between the first connection element and the second connection element, and is located within the gap.

38. The connection node according to any one of claims 1-20 and 28-33, characterized in that, The second connector includes multiple crest segments and multiple trough segments; Wherein, the crest segments and the trough segments are alternately connected in a ring structure along the circumference of the hub; or, the crest segments and the trough segments are alternately connected along the first direction; Each of the wave crest segments is provided with the first engagement portion.

39. The connection node according to claim 1, characterized in that, The hub is cylindrical and has a through hole, and the second connector is sleeved onto the second connecting section through the through hole.

40. The connection node according to claim 1, characterized in that, The first and second engagement portions are threaded; or The first occlusal portion and the second occlusal portion are teeth.

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