CN219411268U

CN219411268U - Connection node

Info

Publication number: CN219411268U
Application number: CN202223325177.8U
Authority: CN
Inventors: 钟智谦
Original assignee: Guangdong Tianxing Mechanical Connector Co ltd
Current assignee: Guangdong Tianxing Mechanical Connector Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-07-25
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to a connection node comprising: a first connecting member for connecting the first member; the second connecting piece is sleeved on the first connecting piece and comprises a hub part and a first engagement part arranged on the outer peripheral surface of the hub part, and a second engagement part engaged with the first engagement part is arranged on the inner wall of the mounting hole; the second connector is configured to have elasticity such that the first engagement portion and the second engagement portion engage with each other to limit a radial degree of freedom of the second connector and the second member when the second connector is mounted in the mounting hole. The connecting node can enable the second connecting piece to be tightly connected with the second component by arranging the first occluding part and the second occluding part which are mutually occluded, so that the pulling resistance of the second connecting piece is improved; by configuring the second connecting member to have elasticity, the first engaging portion and the second engaging portion engage with each other to restrict the radial degree of freedom of the second connecting member and the second member when the second connecting member is mounted in the mounting hole, thereby improving reliability of the second connecting member.

Description

Connection node

Technical Field

The utility model relates to the technical field of building connection, in particular to a connection node.

Background

In order to connect different structural members, a connecting structure is provided in the related art, and the connecting structure comprises two structural members to be connected and a connecting assembly for connecting the two structural members to be connected, wherein the connecting assembly connects the two structural members in an interference fit manner.

However, the interference fit results in difficult installation of the connection assembly and the structural member, and the pullout resistance of the connection assembly is not high.

Disclosure of Invention

Based on this, it is necessary to provide a connection node that is easy to install and that is capable of effectively improving the pullout resistance of the connection assembly.

According to one aspect of the present application, there is provided a connection node for connecting a first member and a second member having a mounting hole provided extending in a first direction, the connection node comprising:

a first connecting piece having a first connecting section and a second connecting section arranged in sequence along the first direction, the first connecting section being for connecting the first member; and

The second connecting piece is sleeved on the second connecting section and comprises a hub part and a first engaging part arranged on the outer peripheral surface of the hub part, and a second engaging part engaged with the first engaging part is arranged on the inner wall of the mounting hole;

Wherein the second connecting member is configured to have elasticity such that the first engagement portion and the second engagement portion engage with each other to restrict a radial degree of freedom of the second connecting member and the second member when the second connecting member is mounted in the mounting hole.

The connecting node can enable the second connecting piece to be tightly connected with the second component by arranging the first occluding part and the second occluding part which are mutually occluded, so that the pulling resistance of the second connecting piece is improved; by configuring the second connecting member to have elasticity, the first engaging portion and the second engaging portion engage with each other to restrict the radial degree of freedom of the second connecting member and the second member when the second connecting member is mounted in the mounting hole, thereby improving reliability of the second connecting member.

In one embodiment, the first bite 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 biting portion is in a decreasing trend along the direction that the first root points to the first top edge, and the width dimension of the first biting portion is the dimension of the first biting portion in the first direction.

In one embodiment, the first root portion and the hub portion define a first leading edge and a first trailing edge of the first bite portion therebetween; in the first direction, the first leading edge is located upstream of the first trailing edge; an included angle formed by the direction of the first front edge pointing to the first top edge and the first direction is a first angle; an included angle formed by the direction of the first trailing edge pointing to the first top edge and the first direction is a second angle;

Wherein the first angle and the second angle range from greater than 0 degrees to less than or equal to 90 degrees.

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

In one embodiment, the first angle is 60 degrees.

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

In one embodiment, the first top edge is located upstream of the first leading edge in the first direction.

In one embodiment, the first angle ranges from 60 degrees or more to less than 90 degrees.

In one embodiment, the first top edge is located between the first leading edge and the first trailing edge in the first direction, and the first angle is not equal in magnitude to the second angle.

In one embodiment, the first angle ranges from 80 degrees or more to less than 90 degrees.

In one embodiment, the second bite has a second root portion connected to an inner wall of the mounting hole and a second top edge spaced apart from the second root portion; and along the direction that the second root points to the second top edge, the width dimension of the second biting part is in a decreasing trend, and the width dimension of the second biting part is the dimension of the second biting part in the first direction.

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 bite portion therebetween, the second leading edge being upstream of the second trailing edge in the first direction; an included angle formed by the direction of the second front edge pointing to the second top edge and the first direction is a third angle; an included angle formed by the direction of the second trailing edge pointing to the second top edge and the first direction is a fourth angle;

wherein the third angle and the fourth angle range from 0 to 90 degrees.

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

In one embodiment, the third angle is 60 degrees.

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

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

In one embodiment, the second trailing edge is located upstream of the second top edge in the first direction.

In one embodiment, the fourth angle ranges from 60 degrees or more to less than 90 degrees.

In one embodiment, the second top edge is located between the second leading edge and the second trailing edge in the first direction, the third angle and the fourth angle being unequal in magnitude.

In one embodiment, the fourth angle ranges from 80 degrees or more to less than 90 degrees. In one embodiment, the first bite is configured to extend along a helix; or alternatively

The first engagement portion is configured to be disposed along a circumferential direction of the hub portion.

In one embodiment, the second connecting member is provided with at least one opening penetrating through the second connecting member in the radial direction of the hub portion, and at least one opening penetrates through at least one end of the second connecting member in the first direction.

In one embodiment, the second connecting piece is provided with at least one first opening, and at least one first opening penetrates through one end, far away from the first connecting section, of the second connecting piece.

In one embodiment, the first opening has an increasing trend in size along the circumferential direction of the hub portion along the first direction.

In one embodiment, the first openings are provided in plurality, and all of the first openings are disposed at intervals along the circumferential direction of the hub portion.

In one embodiment, the second connecting piece is provided with at least one second opening, and at least one second opening penetrates through one end, close to the first connecting section, of the second connecting piece;

the first openings and the second openings are staggered in a circumferential direction of the hub portion.

In one embodiment, the second connector is provided with a third opening penetrating the second connector along the first direction; in the first direction, the third opening tends to increase in size in the circumferential direction of the hub portion.

In one embodiment, a mounting groove is formed through one end, close to the second member, of the first member along the first direction; the second connecting piece is arranged in the mounting groove along one end, far away from the first opening, of the first direction.

In one embodiment, the connection node further includes a limiting member, where the limiting member is disposed at an end of the second connection section away from the first connection section;

the limiting piece is used for being matched with the second connecting piece to at least limit the radial freedom degree of the second connecting piece and the second component.

In one embodiment, the limiting piece is provided with a first limiting surface, and a second limiting surface which can be propped against the first limiting surface is arranged on one side, close to the limiting piece, of the second connecting piece;

The orthographic projection of the first limiting surface on the reference surface and the orthographic projection of the second limiting surface on the reference surface are at least partially overlapped; the reference plane is a plane perpendicular to the first direction.

In one embodiment, the first stop face 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 upstream of the second edge; the direction in which the first edge points to the second edge is arranged at an angle with the first direction.

In one embodiment, the second stop 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 of the third edge pointing to the fourth edge is arranged at an angle with the first direction.

In one embodiment, the limiting member is detachably sleeved at one end of the second connecting section away from the first connecting section.

In one embodiment, the limiting parts are at least two, wherein at least one limiting part is arranged at one end of the second connecting section far away from the first connecting section; and/or

At least one limiting piece is arranged at one end, close to the first connecting section, of the second connecting section.

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 a radial direction of the hub.

In one embodiment, the extending direction of the gap is arranged at an angle to the first direction.

In one embodiment, the second connection section and the second connection member have an increasing tendency in the circumferential direction of the hub portion along the first direction.

In one embodiment, the dimensions of the second connecting section and the inner peripheral wall of the second connecting member in the radial direction of the mounting hole tend to increase in the first direction, and the dimensions of the outer peripheral wall of the second connecting member in the radial direction of the mounting hole remain unchanged.

In one embodiment, the connection node further comprises a resilient member; the elastic piece is arranged between the first connecting piece and the second connecting piece and is positioned in the gap.

In one embodiment, the second connector comprises a plurality of peak segments and a plurality of valley segments;

Wherein, the crest segments and the trough segments are alternately connected along the circumference of the hub part to form an annular structure; alternatively, the peak segments and the valley segments are alternately connected in the first direction;

and each wave peak section is provided with the first occlusion part.

Drawings

FIG. 1 is a schematic diagram illustrating an assembly of a connection node with a first member and a second member according to an embodiment of the present utility model;

FIG. 2 is a schematic view showing the structure of the first engaging portion and the second engaging portion according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of a portion of a first nip according to an embodiment of the present utility model;

FIG. 4 is an enlarged partial schematic view of a first nip according to another embodiment of the present utility model;

FIG. 5 is a schematic diagram illustrating an assembly of a connection node with a first member and a second member according to another embodiment of the present utility model; FIG. 6 is a schematic view illustrating a structure in which the second connecting member is provided with only the first opening according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a second connector with first and second openings according to an embodiment of the present utility model;

FIG. 8 is a schematic bottom view of FIG. 7 in accordance with the present utility model;

FIG. 9 is a schematic top view of FIG. 7 in accordance with the present utility model;

FIG. 10 is a schematic view of a structure of a second connector with first and second openings according to another embodiment of the present utility model;

FIG. 11 is a schematic view showing a structure in which the second connecting member is provided with the first, second and third openings according to an embodiment of the present utility model;

FIG. 12 is a schematic view illustrating a structure of the second connecting member with only the third opening according to an embodiment of the present utility model;

FIG. 13 is a schematic view showing a structure of a second connecting member with first and third openings according to an embodiment of the present utility model;

FIG. 14 is a schematic view showing an assembly of a first member with a mounting slot according to an embodiment of the present utility model;

FIG. 15 is an assembly schematic view of a connecting node with a limiting member according to an embodiment of the present utility model;

FIG. 16 is a schematic view of a structure in which two limiting members are provided at a connection node according to an embodiment of the present utility model;

FIG. 17 is a schematic view illustrating an assembly of a first connector and a second connector with a gap therebetween according to another embodiment of the present utility model;

FIG. 18 is a schematic view illustrating an assembly of a first connector and a second connector with a gap therebetween according to another embodiment of the present utility model;

FIG. 19 is a schematic view of a structure of the connecting node of FIG. 17 with a stop member according to the present utility model;

FIG. 20 is a schematic view of a structure of the connecting node of FIG. 18 with a stop member according to the present utility model;

FIG. 21 is a schematic view of a connection node of FIG. 17 with an elastic member according to the present utility model;

FIG. 22 is a schematic view showing the structure of the connecting node of FIG. 18 with elastic members according to the present utility model;

FIG. 23 is an assembled schematic view of a connecting node according to an embodiment of the present utility model;

FIG. 24 is a schematic cross-sectional view of A-A of FIG. 19 in accordance with an embodiment of the utility model;

FIG. 25 is an assembled schematic view of a connecting node according to another embodiment of the present utility model;

FIG. 26 is a schematic cross-sectional view of B-B of FIG. 25 in accordance with the present utility model;

FIG. 27 is a schematic view showing a structure of the connecting node of FIG. 23 with a stopper according to the present utility model;

FIG. 28 is a schematic view of a structure of the connecting node of FIG. 25 with a stop member according to the present utility model;

FIG. 29 is a schematic view of a connecting node with elastic members according to an embodiment of the present utility model;

FIG. 30 is a schematic cross-sectional view of C-C of FIG. 29 in accordance with the utility model;

FIG. 31 is a schematic view of an elastic member according to another embodiment of the present utility model;

FIG. 32 is a schematic view of an elastic member according to another embodiment of the present utility model;

FIG. 33 is a schematic top view of a second member according to an embodiment of the utility model.

Reference numerals illustrate:

10. connecting the nodes; 11. a first connector; 111. a first connection section; 112. a second connection section; 1121. a mounting surface; 12. a second connector; 120. a hub portion; 121. a first engagement portion; 122. the second limiting surface; 123. a first opening; 124. a second opening; 125. a third opening; 126. peak segment; 127. trough segments; 13. a limiting piece; 131. a first limiting surface; 14. a gap; 15. an elastic member; 151. a boss; 152. a recessed portion;

20. A first member; 21. a connection hole; 22. a mounting groove; 30. a second member; 31 mounting holes; 311. a second bite.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, 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", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The related art discloses a building connection node, including the connecting rod, overlap the extrusion piece of locating the connecting rod and overlap the metal spring circle of locating the extrusion piece, the one end of connecting rod is connected in first component, and the integrated configuration that connecting rod, extrusion piece and metal spring circle formed inserts through interference fit's mode and locates in the mounting hole of second component to need pour into filling material in the mounting hole in advance in order to make integrated configuration and second component connect firmly. Because the building connection nodes are connected in an interference fit mode, the building connection nodes are not easy to insert into the second component, and the installation is difficult; for connection stability, a plurality of connection nodes are generally adopted to connect the first member and the second member at the same time, but the connection nodes which are easy to cause interference fit cannot be installed smoothly due to low accuracy of the installation holes, and the aging of the filling material can cause unreliable connection.

To this end, the present application provides a connecting node 10 to address at least one of the above-mentioned drawbacks in the related art.

Fig. 1 is an assembly schematic diagram of a connection node and first and second members according to an embodiment of the utility model.

Referring to fig. 1, the present application provides a connection node 10 for connecting a first member 20 and a second member 30, the second member 30 has a mounting hole 31 extending in a first direction (a direction as shown in fig. 1), the connection node 10 includes a first connector 11 for connecting to the first member 20 and a second connector 12 for connecting to the second member 30, and the second connector 12 includes a first engagement portion 121, an inner wall of the mounting hole 31 of the second member 30 is provided with a second engagement portion 311 engaged with the first engagement portion 121, and the second connector 12 is configured to have elasticity.

Thus, by providing the first engagement portion 121 and the second engagement portion 311 engaged with each other, the second connector 12 and the second member 30 can be tightly connected, and the pulling resistance of the second connector can be improved; by configuring the second connecting member 12 to have elasticity, the first engagement portion 121 and the second engagement portion 311 engage with each other to restrict the radial degree of freedom of the second connecting member 12 and the second member 30 when the second connecting member 12 is mounted in the mounting hole 31, thereby improving the reliability of the second connecting member 12.

Specifically, referring to fig. 1, the first connecting member 11 is integrally formed as a solid of revolution, and the first connecting member 11 has a first connecting section 111 and a second connecting section 112 sequentially disposed along a first direction, and the first connecting section 111 is used for connecting the first member 20. The first member 20 is provided with a connection hole 21 penetrating the first member 20 along the first direction, and the first connection section 111 of the first connector 11 is penetrated through the connection hole 21 to be connected to the first member 20. Alternatively, the outer circumferential wall of the first connecting section 111 of the first connecting piece 11 is configured as a threaded surface, and the connecting hole 21 is a threaded hole, i.e. the first connecting piece 11 and the first member 20 are connected by threads.

In this way, the first connecting member 11 is connected to the first member 20 by means of screw connection, which is advantageous in terms of connection strength and reliability, and screw connection is also convenient for installation.

With continued reference to fig. 1, the second connecting member 12 is integrally in a solid of revolution structure, the second connecting member 12 is sleeved on the second connecting section 112, the second connecting member 12 includes a hub 120 and a first engaging portion 121 disposed on an outer peripheral surface of the hub 120, and a second engaging portion 311 engaged with the first engaging portion 121 is disposed on an inner wall of the mounting hole 31. Also, the second connecting member 12 is configured to have elasticity such that the first engagement portion 121 and the second engagement portion 311 engage with each other to limit the radial degree of freedom of the second connecting member 12 and the second member 30 when the second connecting member 12 is mounted in the mounting hole 31. In this application, the hub 120 is a cylindrical structure, and the hub 120 is provided with a through hole, and the second connecting member 12 is sleeved on the second connecting section 112 through the through hole.

It will be appreciated that the second connecting member 12 is configured to have elasticity means that the second connecting member 12 is capable of being deformed at least in the radial direction of the hub 120 so that the second connecting member 12 can be pressed into the mounting hole 31 of the second member 30 by an external force and connected to the second engagement portion 311 of the mounting hole 31 of the second member 30 by the deformation restoring force of the second connecting member 12 itself.

In this way, by providing the second connecting piece 12 having elasticity, the second connecting piece 12 is inserted into the mounting hole 31 of the second member 30, and the connection reliability of the second connecting piece 12 and the second member 30 can also be improved; by providing the first and second engagement portions 121 and 311 engaged to connect the second connecting member 12 and the second member 30, the pulling resistance of the second connecting member 12 is improved, thereby improving the reliability of connection.

Specifically, the first bite 121 has a first root portion connected to the hub 120 and a first top edge spaced apart from the first root portion; the width dimension of the first biting portion 121 tends to decrease in the direction in which the first root portion points to the first top edge, and the width dimension of the first biting portion 121 is the dimension of the first biting portion 121 in the first direction.

More specifically, the first root portion and the hub portion 120 define a first leading edge and a first trailing edge of the first bite 121 therebetween; in the first direction, the first leading edge is located upstream of the first trailing edge; the included angle formed by the direction of the first front edge pointing to the first top edge and the first direction is a first angle; the first trailing edge points to the first top edge and forms a second angle with the first direction. Wherein the first angle and the second angle range from greater than 0 ° to 90 °. Alternatively, the first trailing edge of the preceding first nip 121 is the first leading edge of the following first nip 121 in the first direction, i.e., the first nips 121 are arranged continuously in the first direction without a space therebetween.

It will be appreciated that decreasing trend means that from the overall change, a certain indicator is in a decreasing form overall, but that during a local change the indicator may be in a form that remains the same or increases; gradual decrease refers to continuous decrease of a certain index, but the magnitude of decrease can be uniform or nonuniform; linear reduction means that a certain index decreases as a linear function (y=kx+b). In the above-described embodiment, a certain index specifically refers to the width dimension of the first nip portion 121, and hereinafter, a certain index may also be the width dimension of the second nip portion 311. In this application, the meaning of the decreasing trend, the gradual decrease and the linear decrease are the same as the above description, and for this reason, the description is omitted in the following embodiments.

In some embodiments, the first angle is equal to the second angle (as shown in fig. 1). Optionally, the first angle is 60 degrees.

Fig. 2 is a schematic view showing a structure of engagement of the first engaging portion and the second engaging portion according to an embodiment of the present utility model.

Referring to fig. 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.

Fig. 3 is an enlarged partial view of the first engaging portion according to an embodiment of the present utility model.

Referring to fig. 3, in some embodiments, the first top edge is located upstream of the first front edge in the first direction. Further, the first angle ranges from 60 degrees or more to less than 90 degrees.

Fig. 4 is an enlarged partial view of a first nip according to another embodiment of the present utility model.

Referring to fig. 4, in some embodiments, the first top edge is located between the first front edge and the first rear edge along the first direction, and the first angle and the second angle are not equal in magnitude. Further, the first angle ranges from 80 degrees or more to less than 90 degrees. Referring again to fig. 1, specifically, the second snap-in 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; the width dimension of the second engaging portion 311 tends to decrease in the direction in which the second root portion points to the second top edge, and the width dimension of the second engaging portion 311 is the dimension of the second engaging portion 311 in the first direction.

More specifically, a second leading edge and a second trailing edge of the second bite 311 are defined between the second root portion and the inner wall of the mounting hole 31, the second leading edge being located upstream of the second trailing edge in the first direction; the included angle formed by the direction of the second front edge pointing to the second top edge and the first direction is a third angle; the included angle formed by the direction of the second trailing edge pointing to the second top edge and the first direction is a fourth angle; wherein the third angle and the fourth angle range from greater than 0 ° to 90 °. Alternatively, the second trailing edge of the preceding second nip 311 is the second leading edge of the following second nip 311 in the first direction, that is, the second nip 311 is continuously provided in the first direction without a space therebetween.

It is understood that the first engaging portion 121 and the second engaging portion 311 may be continuously disposed or may be discontinuously disposed.

In some embodiments, the third angle is equal to the fourth angle. Optionally, the third angle is 60 degrees (as shown in fig. 1).

It is understood that when the third angle is equal to the fourth angle and both are 60 degrees, the first engaging portion 121 may 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 are all 60 degrees (as shown in fig. 1). That is, the first engagement portion 121 has a generally triangular male screw structure. In this way, the second connecting member 12 and the second member 30 are connected by screw, and the reliability and convenience of connection can be improved. In some embodiments, the third angle is equal to the fourth angle and is 60 degrees; the direction in which the first leading edge points to the first top edge is perpendicular to the first direction, i.e. the first angle is 90 degrees (as shown in fig. 2). In some embodiments, the third angle is equal to the fourth angle and is 60 degrees; the first top edge is located upstream of the first front edge in the first direction, and further, the first angle ranges from 60 degrees or more to less than 90 degrees. In some embodiments, the third angle is equal to the fourth angle and is 60 degrees; the first top edge is located between the first front edge and the first rear edge along the first direction, and the first angle and the second angle are not equal in size, and further, the range of the first angle is 80 degrees or more and less than 90 degrees.

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 and second snap parts 121 and 311 are completely fitted.

Fig. 5 is an assembly schematic diagram of a connection node and first and second members according to another embodiment of the present utility model.

Referring to fig. 5, in particular in some embodiments, the direction in which the second trailing edge points toward the second top edge is perpendicular to the first direction, i.e., the fourth angle is 90 degrees. At this time, 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.

In particular, in some embodiments, the second trailing edge is located upstream of the second top edge in the first direction. Further, the fourth angle ranges from 60 degrees or more to less than 90 degrees. At this time, along the first direction, the first top edge is located upstream of the first front edge, and the first angle ranges from 60 degrees or more to less than 90 degrees.

In particular, in some embodiments, the second top edge is located between the second leading edge and the second trailing edge in the first direction, and the third angle and the fourth angle are not equal in magnitude. Further, the fourth angle ranges from 80 degrees or more to less than 90 degrees. At this time, 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 to the second angle, and the range of the first angle is 80 degrees or more and less than 90 degrees

In some embodiments, the first and second engagement portions 121, 311 are threads, and the first and second engagement portions 121, 311 are configured to extend along a helix. When the first engagement portion 121 and the second engagement portion 311 are screw teeth, the second connecting member 12 has only one first engagement portion 121 spirally arranged along the spiral line, and the second member 30 also has only one second engagement portion 311 spirally arranged along the spiral line

In some embodiments, the first and second engaging portions 121 and 311 are teeth, and the first and second engaging portions 121 and 311 are configured to extend in a circumferential direction of the hub 120. When the first engaging portions 121 and the second engaging portions 311 are teeth, the second connecting member 12 is provided with a plurality of first engaging portions 121 in the first direction, each first engaging portion 121 is provided to extend in the circumferential direction of the hub 120, and the second member 30 is provided with a plurality of second engaging portions 311 in the first direction, each second engaging portion 311 is provided to extend in the circumferential direction of the hub 120.

In some embodiments, the second connecting member 12 is provided with at least one opening extending therethrough in the radial direction of the hub 120, and at least one opening extends through at least one end of the second connecting member 12 in the first direction.

Fig. 6 is a schematic structural view of the second connecting member with only the first opening according to an embodiment of the present utility model.

Referring to fig. 6, specifically, the second connecting member 12 is provided with at least one first opening 123, and the at least one first opening 123 penetrates through an end of the second connecting member 12 away from the first connecting section 111, so that the second connecting member 12 can deform along the radial direction of the hub 120. Alternatively, the first opening 123 has an increasing trend in size along the circumferential direction of the hub 120 in the first direction; further, the first opening 123 gradually increases in size in the circumferential direction of the hub 120; further, the size of the first opening 123 in the circumferential direction of the hub 120 increases linearly.

It will be appreciated that increasing trend means that from the overall change, a certain indicator is in an increasing form overall, but that during a local change the indicator may be in a form that remains the same or decreases; gradually increasing means that a certain index is continuously increased, but the increasing amplitude can be uniform or nonuniform; a linear increase means that a certain index increases as a linear function of a degree (y=kx+b). In the above-described embodiment, a certain index specifically refers to the dimension of the first opening 123 in the circumferential direction of the hub 120, and hereinafter, a certain index may also be the dimension of the third opening 125 in the circumferential direction of the hub 120, the dimension of the second connecting section 112 and the second connecting member 12 in the circumferential direction of the hub 120, and the dimension of the inner peripheral wall of the second connecting member 12 in the circumferential direction of the hub 120. In this application, the meaning of increasing trend, gradually increasing and linearly increasing is the same as the above description, and for this reason, the description is omitted in the following embodiments.

Thus, by providing the first opening 123 so that the second connecting member 12 can deform along the radial direction of the hub 120, and since the time of the pressing force received by the end of the second connecting member 12 away from the first member 20 is longer than the time of the end of the second connecting member 12 close to the first member 20, a larger deformability is required, and therefore, the size of the first opening 123 along the circumferential direction of the hub 120 is increased in the first direction from the first connecting member 11 to the second connecting member 12, so as to improve the deformability of the end of the second connecting member 12 away from the first member 20.

Alternatively, the first openings 123 are provided in plurality, and all of the first openings 123 are disposed at intervals in the circumferential direction of the hub 120. Thus, by providing a plurality of first openings 123, the deformability of the second connector 12 can be further improved.

Fig. 7 is a schematic structural view of a second connecting member with a first opening and a second opening according to an embodiment of the utility model.

Referring to fig. 7, further, the second connecting member 12 is provided with at least one second opening 124, and the at least one second opening 124 penetrates through one end of the second connecting member 12 near the first connecting section 111; the first openings 123 and the second openings 124 are staggered along the circumferential direction of the hub 120 to avoid the first openings 123 and the second openings 124 from communicating to cause the second connecting member 12 to break.

FIG. 8 is a schematic bottom view of FIG. 7 in accordance with the present utility model; FIG. 9 is a schematic top view of FIG. 7 in accordance with the present utility model; fig. 10 is a schematic structural view of a second connecting member with first and second openings according to another embodiment of the present utility model.

Alternatively, referring to fig. 7, in the first direction, the sum of the dimensions of any one of the first openings 123 and any one of the second openings 124 in the first direction is greater than or equal to the dimension of the second connecting member 12 in the first direction; referring to fig. 8 and 9, the number of first openings 123 is greater than the number of second openings 124; referring to fig. 10, the size of the first opening 123 in the circumferential direction of the hub 120 is greater than the size of the second opening 124 in the circumferential direction of the hub 120.

In this way, the deformability of the end of the second connecting piece 12 remote from the first connecting section 111 can be improved, facilitating the insertion of the second connecting piece 12 into the mounting hole 31 of the second member 30.

FIG. 11 is a schematic view showing a structure in which the second connector is provided with the first, second and third openings according to an embodiment of the present utility model.

Referring to fig. 11, further, the second connecting member 12 is provided with a third opening 125 penetrating the second connecting member 12 along the first direction; in the first direction, the third opening 125 tends to increase in size in the circumferential direction of the hub 120; further, the third opening 125 gradually increases in size in the circumferential direction of the hub 120; further, the third opening 125 increases linearly in size along the circumferential direction of the hub 120. Wherein the first, second and third openings 123, 124 and 125 are staggered along the circumferential direction of the hub 120. In this manner, the deformability of the end of the second connector 12 remote from the first member 20 is increased, thereby facilitating the mounting connection of the second connector 12.

FIG. 12 is a schematic view illustrating a structure of the second connecting member with only the third opening according to an embodiment of the present utility model; fig. 13 is a schematic structural view of the second connecting member with the first and third openings according to an embodiment of the present utility model.

Referring to fig. 12, in some embodiments, the second connecting member 12 is provided with only the third opening 125. Referring to fig. 13, in some embodiments, the second connecting member 12 is provided with a third opening 125 and at least one first opening 123, and the first openings 123 and the third openings 125 are staggered along the circumferential direction of the hub 120. It will be appreciated that, in this application, in order to enable the second connecting member 12 to be smoothly mounted on the second member 30, the end of the second connecting member 12 away from the first member 20 must have deformability, so that the second connecting member 12 of this application may be provided with only the first opening 123 or only the third opening 125, or may include the first opening 123 and the second opening 124, or may include the first opening 123 and the third opening 125, or may include the first opening 123, the second opening 124 and the third opening 125 at the same time.

Fig. 14 is an assembly schematic view of a first member provided with a mounting groove according to an embodiment of the utility model.

Referring to fig. 14, an end of the first member 20 adjacent to the second member 30 is provided with a mounting slot 22 along a first direction; the second connecting member 12 is disposed in the mounting groove 22 at an end thereof remote from the first opening 123 in the first direction. Specifically, the first member 20 is provided with a mounting groove 22 communicating with the connection hole 21 at an end near the second member 30 in the first direction, the mounting groove 22 is coaxially disposed with the connection hole 21, and the mounting groove 22 penetrates through the first member 20 near the end of the second member 30 in the first direction. When the second connecting member 12 is provided with only the first opening 123, an end of the second connecting member 12 away from the first opening 123 along the first direction is disposed in the mounting groove 22. Fig. 17 and 15 are schematic views illustrating assembly of a connecting node with a limiting member according to an embodiment of the present utility model.

Referring to fig. 15, the connection node 10 further includes a limiting member 13, where the limiting member 13 is integrally in a revolving structure and is disposed at an end of the second connection section 112 away from the first connection section 111, and the limiting member 13 is configured to cooperate with the second connection member 12 to at least limit a radial degree of freedom of the second connection member 12 and the second member 30.

Specifically, the limiting piece 13 has a first limiting surface 131, and a second limiting surface 122 capable of abutting against the first limiting surface 131 is arranged on one side, close to the limiting piece 13, of the second connecting piece 12; 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 plane is a plane perpendicular to the first direction.

More specifically, the first limiting surface 131 has a first edge and a second edge surrounding the first connecting piece 11, the first edge being closer to the first connecting piece 11 than the second edge; the first edge is located upstream of the second edge in the first direction; the direction in which the first edge points to the second edge is arranged at an angle to the first direction. The second limiting surface 122 has a third edge and a fourth edge surrounding the first connecting piece 11, the third edge being closer to the first connecting piece 11 than the fourth edge; the third edge is located upstream of the fourth edge in the first direction; the direction in which the third edge points to the fourth edge is arranged at an angle to the first direction.

It is understood that the first limiting surface 131 and the second limiting surface 122 may be disposed in parallel or may be disposed at an angle.

In some embodiments, the limiting member 13 is detachably sleeved on an end of the second connecting section 112 away from the first connecting section 111 (as shown in fig. 15). In other embodiments, the stop 13 and the second connecting segment 112 may be integrally formed (as shown in fig. 1, 2, 5, and 14).

In this way, by arranging the limiting piece 13, and arranging the first limiting surface 131 on the limiting piece 13, and arranging the second limiting surface 122 matched with the first limiting surface 131 on the second connecting piece 12, when the first connecting piece 11 is pulled, the limiting piece 13 can form pressure along the radial direction of the hub 120 on the second connecting piece 12, so that the second connecting piece 12 applies force along the radial direction of the hub 120 to the mounting hole 31 of the second member 30, thereby improving the pulling resistance of the connecting node 10 and preventing the second connecting piece 12 from falling out of the mounting hole 31.

Fig. 16 is a schematic structural view of a connecting node with two limiting members according to an embodiment of the present utility model.

Referring to fig. 16, in some embodiments, the limiting members 13 are provided with at least two limiting members 13, wherein at least one limiting member 13 is disposed at an end of the second connecting section 112 away from the first connecting section 111, and wherein at least one limiting member 13 is disposed at an end of the second connecting section 112 near the first connecting section 111. It should be understood that, when there are a plurality of limiting members 13, they may be disposed at the same end of the second connecting section 112, or may be disposed at opposite ends of the second connecting section 112 along the first direction, or may be disposed at any position of the second connecting section 112 along the first direction, for example, in a radial direction of the hub 120 of the second connecting section 112 is greater than a radial direction of the hub 120 of the first connecting section 111, so that the second connecting section 112 is formed with a mounting surface 1121, and the limiting members 13 may be disposed on the mounting surface 1121. An annular groove may be formed along the circumferential direction of the second connecting section 112, and the limiting member 13 may be partially disposed in the annular groove, where the first limiting surface 131 may be located outside the annular groove. The specific installation position and structure of the limiting member 13 are not further limited, and the above-mentioned limiting requirement can be satisfied.

Referring to fig. 1, 2, 5 and 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 along the radial direction of the hub 120. In this way, by providing the first and second connection members 11 and 12 at intervals in the radial direction of the hub 120, a space can be provided for deformation of the second connection member 12, so that the second connection member 12 can be smoothly connected to the side wall of the mounting hole 31 of the second member 30.

FIG. 17 is a schematic view illustrating an assembly of a first connector and a second connector with a gap therebetween according to another embodiment of the present utility model; fig. 18 is an assembly schematic diagram of a gap between a first connecting member and a second connecting member according to another embodiment of the utility model.

Referring to fig. 17 and 18, in some embodiments, the direction of extension of the gap 14 is disposed at an angle to the first direction. In this way, the pulling resistance of the second connector 12 can be increased, thereby improving the reliability of the connection.

Referring to fig. 17, in particular, in one embodiment, the second connecting section 112 and the second connecting member 12 have increasing dimensions along the circumferential direction of the hub 120 in the first direction; further, the second connecting section 112 and the second connecting member 12 gradually increase in size in the circumferential direction of the hub 120; further, the dimensions of the second connecting section 112 and the second connecting member 12 in the circumferential direction of the hub 120 linearly increase. That is, the second connecting section 112 is tapered, and the second connecting member 12 is tapered to mate with the outer peripheral wall of the second connecting section 112, it being 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.

Referring to fig. 18, in particular, in another embodiment, the dimensions of the second connecting section 112 and the inner peripheral wall of the second connecting member 12 in the radial direction of the mounting hole 31 tend to increase in the first direction, and the dimensions of the outer peripheral wall of the second connecting member 12 in the radial direction of the mounting hole 31 remain unchanged. Further, the inner peripheral wall of the second connecting member 12 gradually increases in size in the circumferential direction of the hub portion 120; further, the inner peripheral wall of the second connecting member 12 increases linearly in size in the circumferential direction of the hub portion 120. That is, the second connecting section 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 section 112, but the outer peripheral wall of the second connecting member 12 is circular.

In this way, by providing the second connecting section 112 of the first connecting member 11, the inner peripheral wall of the second connecting member 12, the second connecting member 12 and the inner peripheral wall of the mounting hole 31, which are generally tapered as a whole, all are tapered, when the first connecting member 11 is pulled, the first connecting member 11 will form a compressive force on the second connecting member 12 in the radial direction of the boss 120, so that the second connecting member 12 applies a force in the radial direction of the boss 120 to the mounting hole 31 of the second member 30, thereby improving the pulling resistance of the connection node 10 and preventing the second connecting member 12 from coming out of the mounting hole 31.

Fig. 19 is a schematic view of a structure in which a limiting member is disposed at a connection node in fig. 17 according to the present utility model.

Referring to fig. 19, in some embodiments, the connection node 10 in fig. 17 is further provided with a limiting member 13, and the limiting member 13 is sleeved on an end of the second connection section 112 away from the first connection section 111. The inner peripheral wall of the stopper 13 tends to increase in size in the radial direction of the hub 120; further, the inner peripheral wall of the stopper 13 gradually increases in size in the circumferential direction of the hub 120; further, the inner peripheral wall of the stopper 13 increases linearly in size in the circumferential direction of the hub 120. That is, the inner peripheral wall of the stopper 13 is tapered so as to facilitate the engagement of the second connecting section 112. It is understood that the limiting member 13 is also provided with a first limiting surface 131, which is not described herein.

Fig. 20 is a schematic structural view of the connecting node in fig. 18 with a limiting member according to the present utility model.

Referring to fig. 20, in some embodiments, the connection node 10 in fig. 18 is further provided with a limiting member 13, the limiting member 13 is sleeved at one end of the second connection section 112 away from the first connection section 111, and the size of the inner peripheral wall of the limiting member 13 along the radial direction of the hub 120 tends to increase. It is understood that the structure of the limiting member 13 is substantially the same as that of the limiting member 13 in fig. 19, and will not be described herein.

In this way, by providing the stopper 13, the pulling resistance of the second connecting member 12 can be further enhanced, and the stability and reliability of the connecting node 10 can be improved.

FIG. 21 is a schematic view of a connection node of FIG. 17 with an elastic member according to the present utility model; fig. 22 is a schematic structural view of the connection node of fig. 18 with an elastic member according to the present utility model.

Referring to fig. 21 and 22, in some embodiments, the connection node 10 in fig. 17 and 18 is further provided with an elastic member 15, where the elastic member 15 is disposed between the first connection member 11 and the second connection member 12 and is located in the gap 14. Wherein the elastic member 15 has an increasing trend in size along the circumferential direction of the hub 120; further, the elastic member 15 gradually increases in size in the circumferential direction of the hub 120; further, the elastic member 15 linearly increases in size in the circumferential direction of the hub 120. I.e. the elastic member 15 is tapered in order to better cooperate with the second connecting section 112. FIG. 23 is an assembled schematic view of a connecting node according to an embodiment of the present utility model; FIG. 24 is a schematic cross-sectional view of A-A of FIG. 23 in accordance with an embodiment of the utility model.

Referring to fig. 23 and 24, the second connecting member 12 includes a plurality of peak segments 126 and a plurality of valley segments 127, the peak segments 126 and the valley segments 127 are alternately connected in a ring-like structure along the circumferential direction of the hub 120, and each peak segment 126 is provided with a first engaging portion 121. Optionally, the second connector 12 is a transverse wave spring; the number of peak segments 126 is 4 or more and 24 or less.

FIG. 25 is an assembled schematic view of a connecting node according to another embodiment of the present utility model; FIG. 26 is a schematic cross-sectional view of B-B of FIG. 25 in accordance with the present utility model.

Referring to fig. 25 and 26, the second connecting member 12 includes a plurality of peak segments 126 and a plurality of valley segments 127, the peak segments 126 and the valley segments 127 being alternately connected in the first direction, and a first engaging portion 121 being provided on each of the peak segments 126. Optionally, a plurality of first engaging portions 121 are disposed on each peak segment 126 along the first direction. Optionally, the second connector 12 is a longitudinal wave spring; the number of peak segments 126 is 4 or more and 24 or less.

FIG. 27 is a schematic view showing a structure of the connecting node of FIG. 23 with a stopper according to the present utility model; fig. 28 is a schematic structural view of the connecting node in fig. 25 with a limiting member according to the present utility model.

Referring to fig. 27, in some embodiments, the connection node 10 in fig. 23 is further provided with a limiting member 13, and the limiting member 13 is sleeved on an end of the second connection section 112 away from the first connection section 111.

Referring to fig. 28, in some embodiments, the connection node 10 in fig. 25 is further provided with a limiting member 13, and the limiting member 13 is sleeved on an end of the second connection section 112 away from the first connection section 111.

It is to be understood that, although the specific shape of the first engaging portion 121 in fig. 23 is different from that of the first engaging portion 121 in fig. 27, the specific shape of the first engaging portion 121 in fig. 25 and 28 is different, the stopper 13 may be provided in fig. 23 and 25.

Fig. 29 is a schematic structural view of a connection node with an elastic member according to an embodiment of the present utility model.

Referring to fig. 29, in some embodiments, the connection node 10 further includes an elastic member 15, where the elastic member 15 is disposed between the first connection member 11 and the second connection member 12 and is located in the gap 14. The elastic member 15 can also elastically deform along the radial direction of the mounting hole 31, so that the second connecting member 12 can smoothly complete the elastic deformation. After the second connecting piece 12 is mounted to the mounting hole 31, the elastic piece 15 pushes the second connecting piece 12 towards the inner wall of the mounting hole 31 under the action of self elastic force, so that the second connecting piece 12 is mounted with the mounting hole 31 more tightly. Moreover, the elastic piece 15 fills the gap 14 between the second connecting piece 12 and the first connecting piece 11, so that the first connecting piece 11 and the second connecting piece 12 are more tightly connected, and the connection of the connection node 10 is more stable.

FIG. 30 is a schematic cross-sectional view of C-C of FIG. 29 in accordance with the present utility model.

Further, the elastic member 15 includes a plurality of protruding portions 151 and a plurality of recessed portions 152. Referring to fig. 30, in particular, in some embodiments, the plurality of protrusions 151 and the plurality of recesses 152 are alternately connected in an annular structure along the circumferential direction of the second connecting member 12. The convex portions 151 and the concave portions 152 are alternately connected to form an annular structure, thereby forming a cylindrical structure of the second connecting member 12. In actual installation, the second connecting piece 12 is sleeved on the second connecting section 112 of the first connecting piece 11, the concave portion 152 of the second connecting piece 12 can be attached to the first connecting piece 11, and a certain gap exists between the convex portion 151 of the second connecting piece 12 and the first connecting piece 11. Accordingly, when the second connection member 12 is inserted into the mounting hole 31, the protruding portion 151 can be contracted inward in the radial direction of the first connection member 11, thereby enabling the second connection member 12 to be pressed into the mounting hole 31.

Fig. 31 is a schematic structural view of an elastic member according to another embodiment of the present utility model.

Referring to fig. 31, in particular, in other embodiments, the plurality of protrusions 151 and the plurality of recesses 152 are alternately connected in a ring-like structure along the first direction. Each of the protruding portions 151 and each of the recessed portions 152 are provided in a ring shape, and the plurality of protruding portions 151 and the plurality of recessed portions 152 are alternately connected in the axial direction of the mounting hole 31, thereby forming a cylindrical structure of the second connecting member 12. In actual installation, the protruding portion 151 of the second connecting member 12 is spaced from the first connecting member 11, and when the second connecting member 12 is inserted into the mounting hole 31, the protruding portion 151 is pressed by the side wall of the mounting hole 31, so that the protruding portion 151 elastically contracts inward in the radial direction of the mounting hole 31, and the second connecting member 12 is pressed into the mounting hole 31 to be connected with the second member 30.

It will be appreciated that the plurality of protruding portions 151 and the plurality of recessed portions 151 are alternately connected in the first direction or alternately connected in the circumferential direction of the second connecting member 12 can form a cylindrical structure, and a gap is ensured between the protruding portions 151 and the first connecting member 11, so that the second connecting member 12 has a shrink space in the radial direction of the mounting hole 31, and the second connecting member 12 can be smoothly inserted into the mounting hole 31 and connected with the inner wall of the mounting hole 31.

Alternatively, the number of the protruding portions 151 is 4 or more and 24 or less. When the number of the protruding portions 151 is large, the elastic force of the second connecting member 12 may be relatively large, but the space between the protruding portions 151 and the first connecting member 11 may be relatively small, which results in a smaller elastic contraction of the second connecting member 12, and thus the installation difficulty of the second connecting member 12 is high. When the number of the protruding portions 151 is small, the elastic force of the second connection member 12 may be relatively small, but the interval between the protruding portions 151 and the first connection member 11 may be relatively large, which results in a large magnitude of elastic contraction of the second connection member 12, and thus the difficulty of installation of the second connection member 12 is low.

Therefore, in practical use, the number of the protrusions 151 in the second connecting member 12 cannot be too large nor too small. In this embodiment, the number of the protruding portions 151 is 4 or more and 24 or less, and the number of the protruding portions 151 is suitable. In this embodiment, the elastic force of the second connecting member 12 can meet the use requirement of the connection node 10, and the installation difficulty of the second connecting member 12 is not too high, so that the normal installation of the second connecting member 12 can be ensured.

Fig. 32 is a schematic structural view of an elastic member according to another embodiment of the present utility model.

Referring to fig. 32, in some embodiments, the elastic member 15 is a spiral spring wound around the outer portion 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 of the spiral spring is connected to the inner wall of the second connecting member 12. The spiral spring is wound on the outer part of the second connecting section 112, and the second connecting piece 12 is sleeved with the second connecting section 112, so that the spiral spring is installed between the second connecting piece 12 and the second connecting section 112. One end of the inner side of the spiral spring is connected with the first connecting piece 11, and one end of the outer side is abutted with the inner wall of the second connecting piece 12. Therefore, when the second connecting member 12 is deformed in the radial direction of the mounting hole 31, the inner wall of the second connecting member 12 presses the spiral spring, thereby deforming the spiral spring together. When the second connecting piece 12 is installed, the spiral spring is in a contracted state, so that the spiral spring can push the second connecting piece 12 against the inner wall of the installation hole 31, the second connecting piece 12 is tightly connected with the installation hole 31, and the connecting effect of the connecting node 10 is stable.

Note that, the specific structure of the elastic member 15 in fig. 21 and 22 may be the same as or different from the structure of the elastic member 15 in fig. 29 to 32, and is not limited herein.

When a plurality of connection nodes 10 are provided to connect the first member 20 and the second member 30, the gap 14 can offset the accuracy error of the mounting hole 31 formed in the second member 30, thereby ensuring that all the connection nodes 10 can be mounted smoothly. When the first member 20 and the second member 30 need to be connected through a plurality of connection nodes 10 (see fig. 33), there are 6 mounting holes, when the first member 20 and the second member 30 need to ensure that the 6 second connection pieces 12 can be well matched, so as to increase the processing precision requirement of the structural member, while the connection nodes 10 of the present application have a certain gap 14 between the second connection pieces 12 and the first connection pieces 11, and the elastic pieces 15 can be compressed, and the 6 connection structures all adopt the connection nodes 10 of the present application, so that the situation that the 6 connection structures cannot be fully inserted due to the processing error can be overcome, and the elastic pieces 15 can rebound after being compressed, the plurality of connection nodes 10 can automatically balance the elastic force to achieve the optimal matching state under the elastic force of the elastic pieces 15, so that the 6 connection nodes 10 connecting the first member 20 and the second member 30 are tightly combined in the radial direction perpendicular to the mounting holes 31, and are less prone to shaking.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A connection node for connecting a first member and a second member, the second member having a mounting hole extending in a first direction, the connection node comprising:

2. The connection node of claim 1, wherein the first bite 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 biting portion is in a decreasing trend along the direction that the first root points to the first top edge, and the width dimension of the first biting portion is the dimension of the first biting portion in the first direction.

3. The connection node of claim 2, wherein the first root portion and the hub portion define a first leading edge and a first trailing edge of the first bite portion therebetween; in the first direction, the first leading edge is located upstream of the first trailing edge; an included angle formed by the direction of the first front edge pointing to the first top edge and the first direction is a first angle; an included angle formed by the direction of the first trailing edge pointing to the first top edge and the first direction is a second angle;

4. A connecting node according to claim 3, wherein the first angle is equal to the second angle.

5. The connecting node of claim 4, wherein the first angle is 60 degrees.

6. A connecting node according to claim 3, wherein the direction in which the first leading edge points to the first top edge is perpendicular to the first direction.

7. A connecting node according to claim 3, wherein the first top edge is located upstream of the first front edge in the first direction.

8. The connecting node of claim 7, wherein the first angle ranges from 60 degrees or more to less than 90 degrees.

9. A connecting node according to claim 3, wherein in the first direction the first top edge is located between the first leading edge and the first trailing edge, and the first angle is not equal in magnitude to the second angle.

10. The connecting node of claim 9, wherein the first angle ranges from 80 degrees or more to less than 90 degrees.

11. A connection node according to claim 3, wherein the second bite has a second root portion connected to an inner wall of the mounting hole and a second top edge spaced apart from the second root portion; and along the direction that the second root points to the second top edge, the width dimension of the second biting part is in a decreasing trend, and the width dimension of the second biting part is the dimension of the second biting part in the first direction.

12. The connection node of claim 11, wherein the second root portion and an inner wall of the mounting hole define a second leading edge and a second trailing edge of the second bite portion therebetween, the second leading edge being upstream of the second trailing edge in the first direction; an included angle formed by the direction of the second front edge pointing to the second top edge and the first direction is a third angle; an included angle formed by the direction of the second trailing edge pointing to the second top edge and the first direction is a fourth angle;

wherein the third angle and the fourth angle range from 0 to 90 degrees.

13. The connection node of claim 12, wherein the third angle is equal to the fourth angle.

14. The connecting node of claim 13, wherein the third angle is 60 degrees.

15. The connection node of claim 12, wherein the first angle is equal to the fourth angle and the second angle is equal to the third angle.

16. The connecting node of claim 15, wherein the direction in which the second trailing edge points toward the second top edge is perpendicular to the first direction.

17. The connecting node of claim 14, wherein the second trailing edge is located upstream of the second top edge in the first direction.

18. The connecting node of claim 17, wherein the fourth angle ranges from 60 degrees or more to less than 90 degrees.

19. The connecting node of claim 14, wherein the second top edge is located between the second leading edge and the second trailing edge in the first direction, the third angle and the fourth angle being unequal in magnitude.

20. The connecting node of claim 19, wherein the fourth angle ranges from 80 degrees or more to less than 90 degrees.

21. The connection node of any one of claims 1-20, wherein the first bite is configured to extend along a helix; or alternatively

22. The connection node according to any of claims 1-20, wherein the second connection member is provided with at least one opening extending therethrough in a radial direction of the hub portion, at least one of the openings extending through at least one end of the second connection member in the first direction.

23. The connection node of claim 22, wherein the second connector defines at least one first opening extending through an end of the second connector remote from the first connector segment.

24. The connection node of claim 23, wherein the first opening has an increasing dimension in a circumferential direction of the hub in the first direction.

25. The connection node of claim 23, wherein a plurality of the first openings are provided, and all of the first openings are spaced apart along a circumferential direction of the hub portion.

26. The connection node of claims 23-25, wherein the second connector is provided with at least one second opening, at least one of the second openings extending through an end of the second connector adjacent the first connector section;

27. The connection node of claims 23-25, wherein the second connector is provided with a third opening extending through the second connector in the first direction; in the first direction, the third opening tends to increase in size in the circumferential direction of the hub portion.

28. The connection node of claims 23-25, wherein an end of the first member adjacent to the second member is provided with a mounting slot therethrough in the first direction; the second connecting piece is arranged in the mounting groove along one end, far away from the first opening, of the first direction.

29. The connection node of claim 1, further comprising a stop member disposed at an end of the second connection segment remote from the first connection segment;

30. The connecting node according to claim 29, wherein the limiting member has a first limiting surface, and a second limiting surface capable of abutting against the first limiting surface is provided on a side of the second connecting member adjacent to the limiting member;

31. The connection node of claim 30, wherein the first stop face 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;

32. The connection node of claim 30, wherein the second stop surface has a third edge and a fourth edge surrounding the first connection member, the third edge being closer to the first connection member than the fourth edge;

33. The connection node of claim 29, wherein the stop is detachably sleeved at an end of the second connection section away from the first connection section.

34. The connection node of claim 29, wherein there are at least two of the stop members, wherein at least one of the stop members is disposed at an end of the second connection section remote from the first connection section; and/or

35. The connection node according to any of claims 1-20, 29-34, wherein the outer peripheral wall of the first connection member and the inner peripheral wall of the second connection member together define a gap in a radial direction of the hub.

36. The connection node of claim 35, wherein the direction of extension of the gap is disposed at an angle to the first direction.

37. The connection node of claim 36, wherein the second connection section and the second connection member have an increasing trend in size along a circumferential direction of the hub portion along the first direction.

38. The connection node of claim 36, wherein the dimensions of the second connection section and the inner peripheral wall of the second connection member in the radial direction of the mounting hole tend to increase in the first direction, and the dimensions of the outer peripheral wall of the second connection member in the radial direction of the mounting hole remain unchanged.

39. The connection node according to claim 37 or 38, wherein the connection node further comprises a resilient member; the elastic piece is arranged between the first connecting piece and the second connecting piece and is positioned in the gap.

40. The connection node of any one of claims 1-20, 29-34, wherein the second connector comprises a plurality of peak segments and a plurality of valley segments;

and each wave peak section is provided with the first occlusion part.