Connection Assembly and Connection System

Abstract

A connection assembly and a connection system, the connection assembly including a reinforcing member (1), an eccentric wheel (2) and an insert (3). The reinforcing member (1) is provided with opposing connection ends (11) and attachment ends (12). At the end of the connection end (11), there is a connection channel (13), and on the side wall of the connection end (11), there is at least one deformation gap (14). A part of the connection end (11) forms at least one elastic part (15) through the deformation gap (14). On the outer wall of the elastic part (15), there is a clamping protrusion (151). On the outer wall of the reinforcing member (1), there is an attachment space (16) connected to the connection channel (13), and the eccentric wheel (2) is rotatably provided in the attachment space (16). The insert (3) has an insertion channel (31) penetrating both ends, and one end of the insert (3) is inserted into the connection channel (13) from the connection end (11) and can be switched between a loosening position and a locking position. When switching the insert (3) from the loosening position to the locking position, the insert (3) deforms and expands at least a part of the elastic part (15). Since the connection assembly can be used to easily pull out the reinforcing member (1) from the attachment channel (101), the operation is convenient.

Description

Technical Field

[0001] The present invention relates to a connection assembly and a connection system, and is used for connecting a first member and a second member. In particular, it is used for connecting furniture members.

Background Art

[0002] As people's aesthetic awareness has been increasing, in order to improve the aesthetics of furniture and equipment, stealth connectors are gradually being used between two furniture panels or two metalware. Among them, three-in-one connectors and two-in-one connectors are widely used for connecting two furniture panels. However, the hole diameter of the member using the eccentric wheel of the existing three-in-one connector is large (usually 10 mm or more). It is easy for the user to see the eccentric wheel through the large hole diameter, and the stealth property of the three-in-one connector is reduced, which affects the aesthetics of the furniture.

[0003] Therefore, Chinese Patent Publication No. CN216519026U discloses "a reinforcing member, a connection assembly and a connection system". First, an eccentric wheel is provided in the reinforcing member in advance, and the eccentric wheel and the reinforcing member are provided in the mounting channel of the first member from one side of the member. Thereby, the eccentric wheel is connected corresponding to the first mounting hole of the first member. Finally, using a tool such as a driver, the eccentric wheel is locked to the connecting rod through the first mounting hole. Thereby, a stealth connection between the first member and the second member is realized. Since it is not necessary to install the eccentric wheel into the member from the first mounting hole, the first mounting hole is used for a tool such as a driver to pass through, the hole diameter of the first mounting hole is greatly reduced, and the stealth property of the eccentric wheel in the member is improved.

[0004] However, the reinforcing member in the above existing technology is pressed into the member by countersinking. Therefore, it is difficult to remove the reinforcing member from the member after installation. When the mounting position of the reinforcing member is displaced, or when the reinforcing member is removed from the member, the member has to be damaged in order to remove the reinforcing member. Such an operation is difficult and inefficient. Moreover, it is not good for the aesthetics and reuse of the member.

SUMMARY OF THE INVENTION

[0005] To solve the problem of the existing technology of removing the reinforcing member from the member, the first aspect of the present invention provides a connection assembly, including a reinforcing member, an eccentric wheel and an insert, The reinforcing member is provided with opposing connection ends and attachment ends. There is a connection channel at the end of the connection end, and at least one deformation gap is provided on the side wall of the connection end. A part of the connection end forms at least one elastic part through the deformation gap. There is a tightening protrusion on the outer wall of the elastic part, and there is an attachment space on the outer wall of the reinforcing member that connects to the connection channel, The eccentric wheel is rotatably provided in the attachment space, The insert has an insertion channel penetrating both ends. One end of the insert is inserted into the connection channel from the connection end, At least a part of the insertion channel is used to cooperate with an external tool to move the insert into the connection channel, or at least a part of the insertion channel is used to cooperate with an external tool to rotate the insert into the connection channel, Among them, there is at least one operation plane, operation bump or operation groove on the inner wall of the insertion channel, or at least a part of the cross-section of the insertion channel is the same as the cross-section of the inner ring of the sleeve, Among them, the insert can be switched between a loose position and a locked position. When the insert is switched from the loose position to the locked position, the insert deforms and expands at least a part of the elastic part.

[0006] In a certain implementation method, it includes two deformation gaps. The two deformation gaps are respectively provided on the left and right of the connection end, and elastic parts are formed by the deformation gaps on the left and right of the connection end.

[0007] In a certain implementation method, along the line-of-sight direction from the connection end to the attachment end, the reinforcing member is circular.

[0008] In a certain implementation method, the inner wall of the elastic part and the inner wall of the connection channel together form a first female thread part, and on the outer peripheral side wall of the insert, there is a first male thread part that is connected in combination with the first female thread part.

[0009] In a certain implementation method, along the line-of-sight direction from the connection end to the mounting end, the shape and area of the cross-section of the connection channel in the elastic part are the same, and the cross-sectional area of the outer peripheral circle of the outline of the tightening protrusion is larger than the cross-sectional area of the outer peripheral circle of the outline of the mounting end.

[0010] In a certain implementation method, along the line-of-sight direction from the connection end to the mounting end, the inner wall of the elastic part gradually approaches the central axis of the connection channel.

[0011] In a certain implementation method, the inner wall of the connection channel is smooth, and on the inner wall of one end of the elastic part close to the mounting space, a connection ring is provided. The outer peripheral side of the connection ring is provided at an interval from the inner peripheral side of the connection channel, and on the inner peripheral side of the connection ring, a second female thread part is provided. On the outer peripheral side wall of the insert, there is a second male thread part that is connected in combination with the second female thread part.

[0012] In a certain implementation method, it is the connection assembly according to claim 1, wherein the inner wall of the connection channel is smooth, and along the direction from the connection end to the mounting end, the inner wall of one end of the elastic part close to the mounting space gradually approaches the central axis of the connection channel. The outer peripheral side wall of the insert is smooth, and a lock release groove is provided on the outer wall of one end of the insert.

[0013] In a certain implementation method, it includes a connecting rod. One end of the connecting rod is formed with a protruding connection boss, the other end of the connecting rod is provided with a mounting portion, an operating portion is fixedly provided between the connection boss and the mounting portion, there is a relative interval for forming a connection groove between the operating portion and the connection boss, the operating portion is used to rotate at least a part of the connecting rod by an external tool, the operating portion is made of plastic, and among them, at least one operating plane, operating hole, operating bump or operating groove is provided on the outer wall of the operating portion, or there is a cross-section conforming to the cross-section of the sleeve. The eccentric wheel has an eccentric groove, and at least one inner wall of the eccentric groove is provided with a clamp arm, and the eccentric wheel can rotate between a release position and a lock position. Among them, when the eccentric wheel is in the release position, the connection boss is inserted into the eccentric groove through the insertion channel, and when the eccentric wheel is in the lock position, the clamp arm restricts the connection boss from being pulled out of the eccentric groove.

[0014] Moreover, the second aspect of the present invention provides a connection system, including a first member and the connection assembly of the first aspect. A mounting channel is provided on one side of the first member, connection holes communicating with the mounting channel are provided on the upper and lower parts of the first member, the reinforcing member is inserted into the mounting channel, the mounting space is connected corresponding to the connection holes, and the eccentric wheel is connected to the connection holes. When switching the insert from the loosening position to the lock position, the insert deforms and expands at least a part of the elastic portion, whereby the tightening protrusion is pressed against the inner wall of the mounting channel.

[0015] Based on the above technical solutions of the first and second aspects of the present invention, the connection assembly and connection system of the present invention have the following advantages compared with the existing technologies. The reinforcing member is inserted into the mounting channel in the first member and can slide easily within the mounting channel. The outer wall of the reinforcing member and the inner wall of the mounting channel fit or substantially fit with each other, enabling the easy insertion of the reinforcing member into the mounting channel or the easy extraction of the reinforcing member from the mounting channel. After inserting the reinforcing member into the mounting channel, one end of the insert is inserted into the connection channel. When the insert is switched from the loose position to the locked position, the insert deforms and expands at least a part of the elastic part of the reinforcing member, causing the clamping protrusion in the elastic part to be pressed against the inner wall of the mounting channel. The sliding friction force of the reinforcing member in the mounting channel increases, making it difficult for the reinforcing member to slide within the mounting channel, and the reinforcing member is pressed into the mounting channel. When removing the reinforcing member from the first member, the insert is switched to the loose position to return the elastic part to its original state, and by releasing the clamping effect between the clamping protrusion in the elastic part and the mounting channel, the reinforcing member can slide freely within the mounting channel and can be easily pulled out from the mounting channel. Such an operation is convenient and efficient, avoiding damage to the first member, ensuring the integrity and aesthetics of the member, and facilitating the reuse of the member.

[0016] To solve the problem of the prior art of removing the reinforcing member from the member, the third aspect of the present invention provides a connection assembly, including a reinforcing member and an eccentric wheel. The reinforcing member is provided with opposing connection ends and mounting ends. There is a connection channel at the end of the connection end, an eccentric hole connecting to the connection channel at the mounting end, a deformation gap connecting to the eccentric hole on the outer wall of the mounting end, and a clamping protrusion on the outer wall of the mounting end. The outer peripheral side wall of the eccentric wheel is an eccentric arc surface, and the outer peripheral side wall of the eccentric wheel fits with the inner peripheral side wall of the eccentric hole. The eccentric wheel is rotatably provided within the eccentric hole. Among them, the eccentric wheel can rotate between a release position and a locked position. When the eccentric wheel is switched from the loose position to the locked position, the eccentric wheel deforms and expands a part of the side wall of the mounting end.

[0017] In a certain implementation method, along the direction from the connection end towards the mounting end, the reinforcing member is circular.

[0018] In a certain implementation method, at least a part of the connection channel cooperates with an external tool to rotate the reinforcing member. There is at least one operating plane, operating convex point, or operating groove on the inner wall of the connection channel, or at least a part of the cross-section of the connection channel is the same as the cross-section of the inner ring of the sleeve.

[0019] Furthermore, a fourth aspect of the present invention provides a connection system, including a first member and the connection assembly of the third aspect. A mounting channel is provided on one side of the first member, and connection holes communicating with the mounting channel are provided at the top or bottom of the first member. The reinforcing member is inserted into the mounting channel, the eccentric hole is connected corresponding to the connection hole, and the eccentric wheel is connected to the connection hole. When switching the eccentric wheel from the loosening position to the locking position, the eccentric wheel deforms and expands at least a part of the side wall of the mounting end, so that the tightening protrusion is pressed against the inner wall of the mounting channel.

[0020] Based on the technical solutions of the third and fourth aspects of the present invention described above, compared with the existing technologies, the connection assembly and connection system of the present invention have the following advantages. The reinforcing member is inserted into the mounting channel in the first member and can slide easily therein. By fitting or nearly fitting the outer wall of the reinforcing member and the inner wall of the mounting channel with each other, the reinforcing member can be easily inserted into the mounting channel or easily pulled out from the mounting channel. After inserting the reinforcing member into the mounting channel, use a tool such as a driver to pass through the connecting hole and switch the eccentric wheel from the loosening position to the locking position. Then, the eccentric wheel deforms and expands a part of the side wall of the mounting end, so that the clamping protrusion at the mounting end is pressed against the inner wall of the mounting channel, the sliding friction force of the reinforcing member in the mounting channel increases, the reinforcing member becomes difficult to slide in the mounting channel, and the reinforcing member is pressed in the mounting channel. When removing the reinforcing member from the first member, switch the eccentric wheel to the loosening position to restore the mounting end to its original state, and release the clamping effect between the clamping protrusion at the mounting end and the mounting channel, so that the reinforcing member can slide freely in the mounting channel and can be easily pulled out from the mounting channel. Such an operation is convenient and efficient, can avoid damage to the first member, guarantee the integrity and aesthetics of the member, and is useful for the reuse of the member.

Brief Description of the Drawings

[0021]

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Mode for Carrying Out the Invention

[0022] The specific implementation method of the present invention will be described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but do not limit the scope of the present invention.

[0023] In the description of the present invention, the orientation and positional relationship indicated by terms such as "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" are the orientation and positional relationship based on the accompanying drawings. It is only for conveniently explaining the present invention and simplifying the description. It does not indicate that the device or element mentioned must have a specific orientation, must be assembled in a specific orientation, or must be operated in a specific orientation. Therefore, it should not be understood as a limitation of the present invention.

[0024] Moreover, the terms "first" and "second" are used for purposes of description and do not imply relative importance or implicitly indicate the number of technical features shown. Therefore, the features defined as "first" and "second" include one or more such features, explicitly or implicitly. In the description of the present invention, "a plurality" means two or more when not explicitly and specifically limited.

[0025] In the present invention, unless explicitly and specifically limited, terms such as "mounting", "connecting", "attaching", "fixing" should be understood in a broad sense. For example, it can be fixedly connected, or removably connected, or integrated. It can be mechanically connected or electrically connected. It can be directly connected or connected through a medium, or an internal connection between two elements, or an interaction between two elements. A person skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation.

[0026] In the present invention, unless explicitly and specifically limited, for the first feature to be "above" or "below" the second feature may include direct contact between the first feature and the second feature, or may include contact between the first feature and the second feature through another feature therebetween without direct contact. Moreover, for the first feature to be "above", "upward" or "upper surface" of the second feature includes that the first feature is directly above and obliquely above the second feature, or that the first feature is horizontally higher than the second feature. For the first feature to be "below", "downward" or "lower surface" of the second feature includes that the first feature is directly below and obliquely below the second feature, or that the first feature is horizontally lower than the second feature.

[0027] In the present invention, one of the two furniture panels to be connected is taken as the first member, and the other is taken as the second member. The shape and material of the first member may or may not be the same as those of the second member. The shape may be, for example, a plate-like body, a block-like body, a columnar body, etc. The material may be wood, plastic, metal, polymer composite material, etc., or an aggregate thereof. There is no limitation here.

Embodiment

[0028] As shown in FIGS. 1 to 29, Embodiment 1 of the present invention provides a connection assembly. It includes a reinforcing member 1, an eccentric wheel 2 and an insert 3. Opposing connection ends 11 and attachment ends 12 are provided on the reinforcing member 1. A connection channel 13 is provided at the end of the connection end 11, and at least one deformation gap 14 is provided on the side wall of the connection end 11. A part of the connection end 11 forms at least one elastic part 15 through the deformation gap 14. A clamping protrusion 151 is provided on the outer wall of the elastic part 15. An attachment space 16 connected to the connection channel 13 is provided on the outer wall of the reinforcing member 1. The eccentric wheel 2 is rotatably provided in the attachment space 16. The insert 3 has an insertion channel 31 passing through both ends of the insert 3, and one end of the insert 3 is inserted into the connection channel 13 from the connection end 11. At least a part of the insertion channel 31 is used to move the insert 3 into the connection channel 13 in cooperation with an external tool. Or at least a part of the insertion channel 31 is used to rotate the insert 3 into the connection channel 13 in cooperation with an external tool. Among them, at least one operation plane, operation bump or operation groove is provided on the inner wall of the insertion channel 31, or at least a part of the cross-section of the insertion channel 31 is the same as the cross-section of the inner ring of the sleeve. Among them, the insert 3 is switched between a loosening position and a locking position. When the insert 3 is switched from the loosening position to the locking position, the insert 3 deforms and expands at least a part of the elastic part 15.

[0029] During use, the eccentric wheel 2 is pre-provided rotatably in the mounting space 16 of the reinforcing member 1. The eccentric wheel 2 and the reinforcing member 1 are provided inside the first member 10 from one side of the first member 10. Using a tool such as a driver, rotate the eccentric wheel 2 into the mounting space 16 through the top or bottom of the first member 10 to lock or unlock the eccentric wheel 2 to the connecting rod 4. Since there is no need to attach the eccentric wheel 2 to the inside of the first member 10 from the top or bottom of the first member 10, the holes in the first member 10 are used for a tool such as a driver to pass through, improving the stealth of the eccentric wheel 2 in the first member 10.

[0030] Among them, in Embodiment 1 of the present invention, the shape and size of the mounting space 16 are not limited. As long as the eccentric wheel 2 can rotate in the mounting space 16, the mounting space 16 is designed according to the shape and size of the eccentric wheel 2.

[0031] To attach the eccentric wheel 2 into the first member 10 by the reinforcing member 1 according to Embodiment 1 of the present invention, as shown in FIGS. 14 to 16, first, a mounting channel 101 is provided on one side where the first member 10 is connected to the second member 20. Specifically, it is made on the side wall of the first member 10 by a drilling hole technique (such as a six-sided drill, etc.). The cross-sectional shape of the mounting channel 101 conforms to the cross-sectional shape of the reinforcing member 1, and the cross-sectional area of the mounting channel 101 is equal to or slightly larger than the cross-sectional area of the reinforcing member 1. Thereby, when the reinforcing member 1 is inserted into the mounting channel 101, the outer wall of the reinforcing member 1 and the inner wall of the mounting channel 101 fit together, almost fit together, or there is a slight gap. The reinforcing member 1 can be easily inserted into the mounting channel 101 or easily pulled out from the mounting channel 101. Then, by drilling holes, connecting holes 102 connecting to the mounting channel 101 are provided at the top or bottom of the first member 10 (the hole diameter of the connecting holes 102 is used for a tool such as a driver to pass through). After inserting the reinforcing member 1 into the mounting channel 101, by connecting the mounting space 16 corresponding to the connecting holes 102, the eccentric wheel 2 can be rotated into the mounting space 16 by passing through the connecting holes 102 using a tool such as a driver.

[0032] Furthermore, the mounting channel 101 is made by drilling hole technology. The reinforcing member 1 is cylindrical or frustum-shaped to conform to the shape of the cross-section of the mounting channel 101. That is, along the line-of-sight direction from the connection end 11 to the mounting end 12, the reinforcing member 1 is circular. Thereby, the reinforcing member 1 can be easily inserted into the mounting channel 101.

[0033] Since the sliding friction force between the reinforcing member 1 and the mounting channel 101 is small, the reinforcing member 1 is easily pulled out from the mounting channel 101. Therefore, after inserting the reinforcing member 1 into the mounting channel 101 of the first member 10, one end of the insert 3 is inserted into the connection channel 13. When the insert 3 is switched from the loose position to the locked position, the insert 3 deforms and expands at least a part of the elastic portion 15 of the reinforcing member 1. Thereby, the clamping protrusion 151 in the elastic portion 15 is pressed against the inner wall of the mounting channel 101, and the sliding friction force of the reinforcing member 1 in the mounting channel 101 becomes large, and the reinforcing member 1 is difficult to slide in the mounting channel 101. Thus, the reinforcing member 1 is pressed into the mounting channel 101. When removing the reinforcing member 1 from the first member 10, the insert 3 is switched to the loose position to return the elastic portion 15 to its original state. By releasing the clamping effect between the clamping protrusion 151 in the elastic portion 15 and the mounting channel 101, the reinforcing member 1 can slide freely in the mounting channel 101, and the reinforcing member 1 can be easily pulled out from the mounting channel 101. Such an operation is convenient and efficient. Moreover, damage to the first member 10 can be avoided, the integrity and aesthetics of the member can be guaranteed, and it is useful for the reuse of the member.

[0034] Note that Example 1 of the present invention does not limit the outline of the insert 3. For example, the outline of the cross-section of the insert 3 is circular or elliptical or kidney-shaped, etc. The shape of the cross-section of the connection channel 13 only needs to conform to the outline of the insert 3. At the same time, by making the length of the connection channel 13 larger than the length of the insert 3, it is possible to completely insert the insert 3 into the connection channel 13 and realize the stealth connection of the first member 10 to the second member 20.

[0035] In Example 1 of the present invention, the loose position refers to the position of the insert 3 when the elastic part 15 is not deformed. Specifically, the insert 3 is in a state where it is not inserted into the connection channel 13, or a state where a part of the insert 3 is inserted into the connection channel 13. The lock position refers to the position of the insert 3 when the elastic part 15 is deformed. Specifically, the insert 3 is in a state where it is completely inserted into the connection channel 13, or a state where a part of the insert 3 is inserted into the connection channel 13. When the insert 3 switches from the loose position to the lock position, the elastic part 15 gradually deforms, and the clamping effect between the clamping boss in the elastic part 15 and the inner wall of the connection channel 13 gradually increases. When the insert 3 is completely inserted into the connection channel 13, the clamping effect between the clamping boss in the elastic part 15 and the inner wall of the connection channel 13 is the largest. At that time, the tightening effect of the reinforcing material 1 in the connection channel 13 is the best.

[0036] In order to operate to switch the insert 3 between the loose position and the lock position, in Example 1 of the present invention, an external tool (such as a columnar body, etc.) is inserted into the insertion channel 31, and the insert 3 is rotated into the connection channel 13. Thereby, the position of the insert 3 in the reinforcing material 1 is adjusted. Among them, in order to rotate the insert 3 into the connection channel 13 after the external tool (such as a columnar body, etc.) is inserted into the insertion channel 31, at least a part of the cross-sectional shape of the insertion channel 31 is non-circular. For example, the cross-section of the part of the insertion channel 31 near the opening is non-circular, and the cross-section of another part of the insertion channel 31 is circular. For example, the cross-sectional shape of the entire insertion channel 31 is the same non-circular shape. Specifically, the external tool in Example 1 of the present invention is a columnar body that conforms to the cross-sectional shape of the insertion channel 31. After the external tool is inserted into the insertion channel 31, at least a part of the external tool abuts against the inner wall of the insertion channel 31, and the rotating columnar body can rotate the insert 3 into the connection channel 13.

[0037] In other implementation methods, in order to operate to switch the insert 3 between the loose position and the locked position, for example, in Embodiment 1 of the present invention, an external tool (such as a columnar body, etc.) is used to translate the insert 3 into the connection channel 13, and the insert 3 is moved from the loose position to the locked position. An external tool (such as a hook-shaped body, etc.) is used to translate the insert 3 into the connection channel 13, and the insert 3 is moved from the locked position to the loose position. Thereby, the position of the insert 3 in the reinforcing member 1 is adjusted.

[0038] As shown in FIGS. 1, 10, 26, and 29, at least a part of the cross-section of the insertion channel 31 is the same as the cross-section of the inner ring of the sleeve. At this time, at least a part of the insertion channel 31 is a socket wrench sleeve structure. Among them, the socket wrench is a tool commonly used in this field. For example, it is a manual socket wrench of national standard GB T 3390.1-2004, or a manual socket wrench or an electric wrench of other national standards. The cross-section of the insertion channel 31 having a sleeve structure is a non-circular shape not limited to a triangle, a square, a hexagon, an octagon, an ellipse, a kidney shape, or a petal shape. The shape of the cross-section of the external tool conforms to the shape of the cross-section of the insertion channel 31. Thereby, after the external tool is inserted into the insertion channel 31, the insert 3 is rotated into the connection channel 13, and the position of the insert 3 in the connection channel 13 is adjusted.

[0039] Furthermore, the present invention does not limit the number, position, shape, or size of the deformation gaps 14. The number of deformation gaps 14 may be one or more. As shown in FIGS. 7, 17, 20, 25, and 28, when there are two deformation gaps 14, the two deformation gaps 14 are respectively provided on the left and right of the connection end 11. Elastic portions 15 are formed on the left and right of the connection end 11 by the deformation gaps 14. When the first member 10 is a shelf board of a storage rack, the thickness of the first member 10 is small (usually 16 mm or more). After the mounting channel 101 is provided on the side wall of the first member 10, the first member 10 has a small thickness in the vertical direction of the mounting channel 101. When the reinforcing member 1 slides into the mounting channel 101, the elastic portions 15 are provided in the longitudinal direction and the width direction of the first member 10 so as not to damage the upper and lower parts of the first member 10, and the two elastic portions 15 are provided at intervals along the longitudinal direction and the width direction of the first member 10 respectively. Thereby, it is ensured that the first member 10 is not damaged by the elastic portions 15. Among them, the left-right direction in the present invention is the longitudinal direction and the width direction along the first member 10 after the reinforcing member 1 is provided on the first member 10.

[0040] The shape of the deformation gap 14 may be V-shaped, U-shaped, 7-shaped, etc. The deformation gaps 14 may be provided continuously or intermittently. A part of the side wall of the connection end 11 may be deformed through the deformation gap 14. That is, a part of the connection end 11 becomes an elastic portion 15 through the deformation gap 14.

[0041] The structure in which the insert 3 of the present invention deforms and expands the elastic portion 15 will be described in detail below.

[0042] As shown in FIGS. 1 to 9 and FIGS. 17 to 20, as the first specific implementation method in which the insert 3 deforms and expands the elastic portion 15, the inner wall of the elastic portion 15 and the inner wall of the connection channel 13 together form a first female thread portion 17, and on the outer peripheral side wall of the insert 3, there is a first male thread portion 32 that is connected in combination with the first female thread portion 17. Among them, an external tool (such as a columnar body, etc.) is inserted into the insertion channel 31, and the insert 3 is rotated into the connection channel 13. The rotation of the first male thread portion 32 and the first female thread portion 17 slides the insert 3 into the connection channel 13. Thereby, the insert 3 is inserted into the connection channel 13. At the same time, when the insert 3 is inserted into the elastic portion 15 of the connection channel 13, the outer peripheral wall of the insert 3 abuts against the elastic portion 15 to deform and expand the elastic portion 15. Thereby, the clamping boss of the elastic portion 15 is pressed against the inner wall of the mounting channel 101, and the reinforcing material 1 is pressed into the mounting channel 101. As a specific processing method of the reinforcing material 1, the connection channel 13 is provided with continuous female threads at the connection end portion. And a deformation gap 14 is provided on the side wall of the connection end 11 to form the elastic portion 15. Thereby, the female threads in the elastic portion 15 and the female threads of the connection channel 13 together form the first female thread portion 17. The gear of the first female thread portion 17 may be a flat gear or a helical gear, and the first male thread portion 32 is accordingly a flat gear or a helical gear.

[0043] Furthermore, the above first implementation method does not limit the structure of the connection channel 13 at the connection end 11. For example, along the direction from the connection end 11 to the mounting end 12, the shape and area of the cross-section of the connection channel 13 in the elastic portion 15 are the same (i.e., cylindrical). Also, for example, along the direction from the connection end 11 to the mounting end 12, the area of the cross-section of the connection channel 13 in the elastic portion 15 gradually decreases (i.e., frustum-shaped). Also, for example, along the direction from the connection end 11 to the mounting end 12, the area of the cross-section of the connection channel 13 in the elastic portion 15 first gradually increases and then gradually decreases.

[0044] As shown in FIGS. 4, 7, 12, and 13, along the direction from the connection end 11 to the mounting end 12, the shape and area of the cross-section of the connection channel 13 in the elastic portion 15 are the same. The cross-sectional area of the outer peripheral circle of the outline of the clamping projection 151 is larger than the cross-sectional area of the outer peripheral circle of the outline of the mounting end 12. At this time, the insert 3 is a cylindrical structure having a first male thread portion 32 on the outer peripheral wall. After the reinforcing member 1 is inserted into the mounting channel 101, the clamping projection 151 and the inner wall of the mounting channel 101 are fitted to each other, and the reinforcing member 1 generates a certain degree of friction in the mounting channel 101 to ensure that the insert 3 spins into the connection channel 13. At the same time, after the insert 3 contacts the elastic portion 15, the elastic portion 15 is deformed. Thereby, the clamping boss is pressed against the inner wall of the mounting channel 101 to ensure the clamping effect of the reinforcing member 1 in the mounting channel 101.

[0045] As shown in FIGS. 19 and 20, along the direction from the connection end 11 to the mounting end 12, the inner wall of the elastic portion 15 gradually approaches the central axis 131 of the connection channel. Similarly, the insert 3 is cylindrical with a first male thread portion 32 on the outer peripheral wall. Among them, the cross-sectional area of the outer peripheral circle of the outline of the clamping projection 151 is equal to the cross-sectional area of the outer peripheral circle of the outline of the mounting end 12. Or, the cross-sectional area of the outer peripheral circle of the outline of the clamping projection 151 is larger than the cross-sectional area of the outer peripheral circle of the outline of the mounting end 12. Preferably, the cross-sectional area of the outer peripheral circle of the outline of the clamping projection 151 is equal to the cross-sectional area of the outer peripheral circle of the outline of the mounting end 12. The insert 3 is cylindrical, and the cross-sectional area of the insert 3 is larger than the cross-sectional area of the inner wall of the elastic portion 15. Therefore, when the insert 3 moves to the position of the elastic portion 15 in the connection channel 13, the insert 3 abuts against the elastic portion 15 and causes a large deformation. Thereby, the cross-sectional area of the outer peripheral circle of the outline of the clamping projection 151 is larger than the cross-sectional area of the outer peripheral circle of the outline of the mounting end 12. Then, the clamping boss is pressed against the inner wall of the mounting channel 101 to ensure the clamping effect of the reinforcing member 1 in the mounting channel 101.

[0046] Furthermore, in the above first implementation method, after the insert 3 is completely inserted into the connection channel 13, when the insert 3 is rotated again, the reinforcing member 1 can be rotated into the mounting channel 101. Thereby, the position of the reinforcing member 1 in the mounting channel 101 can be finely adjusted, and the mounting accuracy of the reinforcing member 1 in the first member 10 can be improved.

[0047] When it is necessary to remove the reinforcing member 1 from the first member 10, first, the insert 3 is rotated reversely, the insert 3 is completely removed from the connection channel 13, and the elastic part 15 is returned to its original state. By releasing the clamping effect between the clamping protrusion 151 in the elastic part 15 and the mounting channel 101, the reinforcing member 1 can be easily pulled out from the mounting channel 101.

[0048] As shown in FIGS. 21 to 26, as a second specific implementation method in which the insert 3 deforms and expands the elastic part 15, the inner wall of the connection channel 13 is smooth, and a connection ring 18 is provided on the inner wall of one end of the elastic part 15 close to the mounting space 16. The outer peripheral side of the connection ring 18 is provided at an interval from the inner peripheral side of the connection channel 13. A second female thread part 181 is provided on the inner peripheral side of the connection ring 18. There is a second male thread part 33 on the outer peripheral side wall of the insert 3 that is connected in combination with the second female thread part 181. An external tool (such as a columnar body, etc.) is inserted into the insertion channel 31, and the insert 3 is slid into the connection channel 13 by clearance fitting. When the insert 3 slides to the position of the connection ring 18, the insert 3 rotates relative to the connection ring 18, and by the rotation of the second male thread part 33 and the second female thread part 181, the insert 3 is slid into the connection ring 18. The insert 3 is inserted into the connection channel 13. After the end of the insert 3 abuts against the step in the connection channel 13, when the insert 3 is rotated again, the connection ring 18 and the elastic part 15 can be deformed and expanded. Thereby, the clamping boss of the elastic part 15 is pressed against the inner wall of the mounting channel 101, and the reinforcing member 1 is pressed into the mounting channel 101. Among them, the cross-sectional area of the outer peripheral circle of the outline of the clamping protrusion 151 is greater than or equal to the cross-sectional area of the outer peripheral circle of the outline of the mounting end 12.

[0049] When it is necessary to remove the reinforcing member 1 from the first member 10, first, rotate the insert 3 counterclockwise to remove the insert 3 from the connection ring 18 and return the elastic part 15 to its original state. By releasing the clamping effect between the clamping protrusion 151 and the mounting channel 101 in the elastic part 15, the insert 3 can completely slide out of the connection channel 13, and the reinforcing member 1 can be easily pulled out from the mounting channel 101.

[0050] As shown in FIGS. 27 to 29, as a third specific implementation method in which the insert 3 deforms and expands the elastic part 15, the inner wall of the connection channel 13 is smooth. Along the direction from the connection end 11 to the mounting end 12, the inner wall of one end of the elastic part 15 close to the mounting space 16 gradually approaches the central axis 131 of the connection channel. The outer peripheral side wall of the insert 3 is smooth, and a lock release groove 34 is provided on the outer wall of one end of the insert 3. When inserting the insert 3 into the connection channel 13, first, align the lock release groove 34 with the elastic part 15, insert an external tool (such as a columnar body, etc.) into the insertion channel 31, and slide the insert 3 into the connection channel 13 by clearance fitting. When the lock release groove 34 slides to the position of the elastic part 15, rotate the insert 3 by a certain angle (such as 90° or 80°, etc.) in the connection channel 13 so that the arc-shaped outer wall of the insert 3 abuts against the elastic part 15 and deforms and expands the elastic part 15. Thereby, the clamping boss of the elastic part 15 is pressed against the inner wall of the mounting channel 101, and the reinforcing member 1 is pressed into the mounting channel 101. Among them, the cross-sectional area of the outer peripheral circle of the outline of the clamping protrusion 151 is not less than the cross-sectional area of the outer peripheral circle of the outline of the mounting end 12.

[0051] When it is necessary to remove the reinforcing member 1 from the first member 10, first, the insert 3 is rotated counterclockwise at a certain angle (for example, -90° or -80°, etc.) so that the unlocking groove 34 is aligned with the elastic part 15 (the elastic part 15 is inserted into the unlocking groove 34). Thereby, the elastic part 15 is returned to its original state. By releasing the clamping effect between the tightening protrusion 151 and the mounting channel 101 in the elastic part 15, the insert 3 can be completely slid out from the connection channel 13, and the reinforcing member 1 can be easily pulled out from the mounting channel 101.

[0052] In a certain implementation method, when using the connection assembly in the above-mentioned Embodiment 1 of the present invention together with the connecting rod 4, the reinforcing member 1 and the eccentric wheel 2 are provided on the first member 10. A connection boss 41 protrudes from one end of the connecting rod 4, and a mounting part 42 is provided at the other end of the connecting rod 4. The connecting rod 4 is locked to the second member 20 through the mounting part 42 (the mounting part 42 has, for example, a male thread structure). An operating part is fixedly provided between the connection boss 41 and the mounting part 42. There is a relative interval for forming a connection groove between the operating part and the connection boss 41. The operating part is used to rotate at least a part of the connecting rod 4 by an external tool. The operating part is made of plastic. Among them, on the outer wall of the operating part, there are at least one operating plane, operating hole, operating bump, operating groove, or a cross-section that conforms to the cross-section of the sleeve. The eccentric wheel 2 can rotate between the release position and the lock position. When the eccentric wheel 2 is in the release position, the connection boss 41 is inserted into the eccentric groove 23 through the insertion channel 31. When the eccentric wheel 2 is in the lock position, the clamping arm 24 restricts the connection boss 41 from being pulled out of the eccentric groove 23. Among them, for the specific structure of the connecting rod 4 and the mounting method of the connecting rod 4 and the second member 20 in this implementation method, refer to the first connector and its mounting method of "A Connector, a Connection Assembly and a Connection System" disclosed in Chinese Patent Publication No. CN114321115A, and it will not be described here.

[0053] As shown in FIGS. 11 and 14 to 16, the connection assembly of the above-described Example 1 of the present invention is provided on the first member 10 to form a connection system. Specifically, a mounting channel 101 is provided on one side of the first member 10, and connecting holes 102 communicating with the mounting channel 101 are provided at the upper and lower portions of the first member 10. The reinforcing member 1 is inserted into the mounting channel 101, the mounting space 16 is connected corresponding to the connecting hole 102, and the eccentric wheel 2 is connected to the connecting hole 102. When the insert 3 is switched from the loosening position to the locking position, the insert 3 deforms and expands at least a part of the elastic portion 15. Thereby, the tightening protrusion 151 is pressed against the inner wall of the mounting channel 101. After the reinforcing member 1 is inserted into the mounting channel 101, one end of the insert 3 is inserted into the connecting channel 13. When the insert 3 is switched from the loosening position to the locking position, the insert 3 deforms and expands at least a part of the elastic portion 15 of the reinforcing member 1. Thereby, the tightening protrusion 151 in the elastic portion 15 is pressed against the inner wall of the mounting channel 101, the sliding friction force of the reinforcing member 1 in the mounting channel 101 increases, the reinforcing member 1 becomes difficult to slide in the mounting channel 101, and the reinforcing member 1 is pressed into the mounting channel 101. When the reinforcing member 1 is removed from the first member 10, the insert 3 is switched to the loosening position to return the elastic portion 15 to its original state. By releasing the clamping effect between the tightening protrusion 151 in the elastic portion 15 and the mounting channel 101, the reinforcing member 1 can freely slide in the mounting channel 101, and the reinforcing member 1 can be easily pulled out from the mounting channel 101. Such an operation is convenient and efficient. Moreover, damage to the first member 10 can be avoided, the integrity and aesthetics of the member can be guaranteed, and it is useful for reuse of the member.

Embodiment

[0054] As shown in FIGS. 30 to 33, Example 2 of the present invention discloses a connection assembly. It is similar to the structure of the connection assembly in Example 1 of the present invention, but the difference is that the connection assembly in this Example 2 does not include the insert 3. In addition, the outer peripheral side wall of the eccentric wheel 2' in this Example 2 is an eccentric arc surface, and the mounting space of the reinforcing member 1' of the connection assembly is in the structure of an eccentric hole 14'. By the rotation of the eccentric wheel 2' within the eccentric hole 14', a part of the reinforcing member 1' is deformed and expanded, and the reinforcing member 1' is pressed into the first member 10.

[0055] Specifically, the connection assembly in Example 2 of the present invention includes a reinforcing member 1' and an eccentric wheel 2'. The reinforcing member 1' is provided with opposed connection ends 11' and mounting ends 12'. At the end of the connection end 11', there is a connection channel 13', and at the mounting end 12', there is an eccentric hole 14' connected to the connection channel 13'. On the outer wall of the mounting end 12', there is a deformation gap 15' connected to the eccentric hole 14', and on the outer wall of the mounting end 12', there is a clamping protrusion 16'. The outer peripheral side wall of the eccentric wheel 2' is an eccentric arc surface, and moreover, the outer peripheral side wall of the eccentric wheel 2' conforms to the inner peripheral side wall of the eccentric hole 14', and the eccentric wheel 2' is rotatably provided within the eccentric hole 14'. Among them, the eccentric wheel 2' can rotate between a release position and a lock position. When the eccentric wheel 2' is switched from the loose position to the lock position, the eccentric wheel 2' deforms and expands a part of the side wall of the mounting end 12'.

[0056] Note that, as shown in FIGS. 30 to 33, the structure of the eccentric hole 14' in this Example 2 is such that a part of the radius of the inner wall of the eccentric wheel 2' gradually increases or decreases along the central axis. The shape of the outer peripheral side wall of the eccentric wheel 2' is the same as the shape of the eccentric hole 14'. Thereby, the eccentric wheel 2' is inserted into the eccentric hole 14' by clearance fitting, the eccentric wheel 2' is rotated by a certain angle, the larger radius part of the eccentric wheel 2' moves to the smaller radius part of the eccentric hole 14', the outer wall of the eccentric wheel 2' abuts against the inner wall of the eccentric hole 14', and the eccentric wheel 2' can deform and expand a part of the side wall of the mounting end 12'.

[0057] Among them, as shown in FIGS. 32 to 33, the loosening position in the present invention is the position of the eccentric wheel 2' when the connection boss 41' of the connecting rod 4' is inserted into the eccentric groove 23' of the eccentric wheel 2' through the connection channel 13'. The locking position in the present invention is the position of the eccentric wheel 2' that restricts the connection boss 41' from being pulled out of the eccentric groove 23' of the eccentric wheel 2'.

[0058] During use, the eccentric wheel 2' is slid into the mounting channel 101 in the first member 10 by clearance fitting with a pre-provided reinforcing member 1'. Then, the eccentric hole 14' is connected corresponding to the connecting hole 102 in the first member 10. Since the sliding friction force between the reinforcing member 1' and the mounting channel 101 is small, the reinforcing member 1' is easily pulled out from the mounting channel 101. Therefore, after the connection boss 41' of the connecting rod 4' is inserted into the eccentric groove 23' of the eccentric wheel 2' through the connection channel 13', the eccentric wheel 2' is switched from the loosening position to the locking position, and the outer wall of the eccentric wheel 2' abuts against the inner wall of the eccentric hole 14' to deform and expand the side wall of the mounting end 12'. Thereby, the clamping protrusion 16' at the mounting end 12' is pressed against the inner wall of the mounting channel 101, the sliding friction force of the reinforcing member 1' in the mounting channel 101 becomes larger, the reinforcing member 1' is difficult to slide in the mounting channel 101, and the reinforcing member 1' is pressed in the mounting channel 101. When removing the reinforcing member 1' from the first member 10, the eccentric wheel 2' is switched to the loosening position to return the mounting end 12' to its original state. By releasing the clamping effect between the clamping protrusion 16' at the mounting end 12' and the mounting channel 101, the reinforcing member 1' can slide freely in the mounting channel 101, and the reinforcing member 1' can be easily pulled out from the mounting channel 101. Such an operation is convenient and efficient. Moreover, it can avoid damage to the first member 10, ensure the integrity and aesthetics of the member, and is useful for the reuse of the member.

[0059] In a certain implementation method, along the direction from the connection end 11’ to the mounting end 12’, the reinforcing member 1’ is circular. The reinforcing member 1’ is a cylinder or a cone, which is adapted to the mounting channel 101 made by the drill hole technique, can reduce the gap between the reinforcing member 1’ and the inner wall of the mounting channel 101, and can improve the stability of the reinforcing member 1’ in the mounting channel 101.

[0060] In one implementation method, as shown in FIG. 31, in order to adjust the position of the reinforcing member 1' in the mounting channel 101, at least a part of the connecting channel 13' cooperates with an external tool to rotate the reinforcing member 1'. There is at least one operating plane, operating bump or operating groove on the inner wall of the connecting channel 13', or at least a part of the cross-section of the connecting channel 13' is the same as the cross-section of the inner ring of the sleeve. Specifically, after inserting an external tool (such as a columnar body, etc.) into the connecting channel 13', the reinforcing member 1' is rotated to a certain extent in the mounting channel 101. Thereby, it is ensured to adjust the position of the mounting space to connect the eccentric wheel 2' corresponding to the connecting hole 102 in the first member, and to act on the eccentric wheel 2' through the connecting hole 102 using a tool such as a driver. Such an operation is convenient and efficient. Moreover, it can avoid the problem that the mounting space does not correspond to the connecting hole 102, and can ensure the integrity and aesthetics of the first member 10. Among them, in order to rotate the reinforcing member 1' after the external tool (such as a columnar body, etc.) is inserted into the connecting channel 13', the shape of at least a part of the cross-section of the connecting channel 13' is non-circular. For example, the cross-section of the part near the opening of the connecting channel 13' is non-circular, and the cross-section of another part of the connecting channel 13' is circular. For example, the shape of the entire cross-section of the connecting channel 13' is the same non-circular shape. Specifically, the external tool in Embodiment 2 of the present invention is a columnar body that conforms to the shape of the cross-section of the connecting channel 13'. After the external tool is inserted into the connecting channel 13', at least a part of the external tool abuts against the inner wall of the connecting channel 13', and the rotating columnar body can rotate the reinforcing member 1' into the mounting channel 101. Specifically, at least a part of the cross-section of the connecting channel 13' is the same as the cross-section of the inner ring of the sleeve. At that time, at least a part of the connecting channel 13' is a sleeve structure of a socket wrench. Among them, the socket wrench is a tool commonly used in this field. For example, a manual socket wrench of national standard GB T 3390.1-2004, or a manual socket wrench or electric wrench of other national standards. The cross-section of the connecting channel 13' with a sleeve structure is a non-circular shape not limited to triangle, square, hexagon, octagon, ellipse, kidney-shaped, petal-shaped.The shape of the cross-section of the external tool conforms to the shape of the cross-section of the connection channel 13'. Thereby, after the external tool is inserted into the connection channel 13', the reinforcing member 1' is rotated into the attachment channel 101.

[0061] As shown in Fig. 34, the connection assembly of the second embodiment of the present invention described above is provided on the first member 10 to form a connection system. Specifically, an attachment channel 101 is provided on one side of the first member 10, and connection holes 102 communicating with the attachment channel 101 are provided at the upper and lower parts of the first member 10. The reinforcing member 1' is inserted into the attachment channel 101, the eccentric hole 14' is connected corresponding to the connection hole 102, and the eccentric wheel 2' is connected to the connection hole 102. When the eccentric wheel 2' is switched from the loose position to the locked position, the eccentric wheel 2' deforms and expands at least a part of the side wall of the attachment end 12'. Thereby, the clamping protrusion 16' is pressed against the inner wall of the attachment channel 101. After the eccentric wheel 2' slides the pre-provided reinforcing member 1' into the attachment channel 101 in the first member 10 by clearance fitting, the eccentric wheel 2' is switched from the loose position to the locked position, and the outer wall of the eccentric wheel 2' abuts against the inner wall of the eccentric hole 14' to deform and expand the side wall of the attachment end 12'. Thereby, the clamping protrusion 16' at the attachment end 12' is pressed against the inner wall of the attachment channel 101, the sliding friction force of the reinforcing member 1' in the attachment channel 101 increases, the reinforcing member 1' is difficult to slide in the attachment channel 101, and the reinforcing member 1' is pressed into the attachment channel 101. When removing the reinforcing member 1' from the first member 10, the eccentric wheel 2' is switched to the loose position to return the attachment end 12' to its original state. By releasing the clamping effect between the clamping protrusion 16' at the attachment end 12' and the attachment channel 101, the reinforcing member 1' can slide freely in the attachment channel 101, and the reinforcing member 1' can be easily pulled out from the attachment channel 101. Such an operation is convenient and efficient. Moreover, damage to the first member 10 can be avoided, the integrity and aesthetics of the member can be guaranteed, which is useful for the reuse of the member.

[0062] In addition, since the other structure of the reinforcing member 1' in the second embodiment is the same as the structure of the reinforcing member 1 in the first embodiment of the present invention, it will not be described here.

[0063] In the description of this specification, terms such as "one embodiment", "several embodiments", "exemplary embodiments", "examples", "specific examples", and "several examples" mean that the specific features, structures, materials, or characteristics described in relation to those embodiments or examples are included in those embodiments or examples. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0064] Although embodiments of the present invention have been shown, those skilled in the art can make various changes, modifications, substitutions, and variations to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is limited by the claims and their equivalents.

Claims

1. A connection assembly, comprising a reinforcing member, an eccentric wheel, and an insert, wherein the reinforcing member is provided with opposing connection ends and mounting ends, a connection channel is provided at the end of the connection end, at least one deformation gap is provided on the side wall of the connection end, a part of the connection end forms at least one elastic part through the deformation gap, a tightening protrusion is provided on the outer wall of the elastic part, and a mounting space connected to the connection channel is provided on the outer wall of the reinforcing member, wherein the eccentric wheel is rotatably provided in the mounting space, wherein the insert has an insertion channel penetrating both ends, and one end of the insert is inserted into the connection channel from the connection end, wherein at least a part of the insertion channel is used to move the insert into the connection channel in cooperation with an external tool, or at least a part of the insertion channel is used to rotate the insert into the connection channel in cooperation with an external tool, wherein at least one operation plane, operation bump, or operation groove is provided on the inner wall of the insertion channel, or at least a part of the cross-section of the insertion channel is the same as the cross-section of the inner ring of the sleeve, wherein the insert is switchable between a loose position and a locked position, and when the insert is switched from the loose position to the locked position, the insert deforms and expands at least a part of the elastic part. A connection assembly characterized by this.

2. Including two of the deformation gaps, the two deformation gaps are respectively provided on the left and right of the connection end, and the elastic part is formed by the deformation gaps on the left and right of the connection end. The connection assembly according to claim 1, characterized by this.

3. The connection assembly according to claim 1, characterized in that the reinforcing member is circular along the line-of-sight direction from the connection end to the mounting end.

4. The inner wall of the elastic part and the inner wall of the connection channel together form a first female thread part, and a first male thread part for connecting in combination with the first female thread part is provided on the outer peripheral side wall of the insert. The connection assembly according to claim 1, characterized by this.

5. The connection assembly according to claim 4, characterized in that, along the line-of-sight direction from the connection end towards the mounting end, the shape and area of the cross-section of the connection channel in the elastic part are the same, and the cross-sectional area of the outer peripheral circle of the outline of the tightening protrusion is larger than the cross-sectional area of the outer peripheral circle of the outline of the mounting end.

6. The connection assembly according to claim 4, characterized in that, along the line-of-sight direction from the connection end towards the mounting end, the inner wall of the elastic part gradually approaches the central axis of the connection channel.

7. The inner wall of the connection channel is smooth, a connection ring is provided on the inner wall of one end of the elastic part close to the mounting space, the outer peripheral side of the connection ring is provided at an interval from the inner peripheral side of the connection channel, a second female thread part is provided on the inner peripheral side of the connection ring, and a second male thread part for connecting in combination with the second female thread part is provided on the outer peripheral side wall of the insert. The connection assembly according to claim 1 is characterized by this.

8. The inner wall of the connection channel is smooth, and along the direction from the connection end towards the mounting end, the inner wall of one end of the elastic part close to the mounting space gradually approaches the central axis of the connection channel. The outer peripheral side wall of the insert is smooth, and a lock release groove is provided on the outer wall of one end of the insert. The connection assembly according to claim 1 is characterized by this.

9. Including a connecting rod, a connection boss protrudes and is formed at one end of the connecting rod, a mounting part is provided at the other end of the connecting rod, an operating part is fixedly provided between the connection boss and the mounting part, there is a relative interval for forming a connection groove between the operating part and the connection boss, the operating part is used to rotate at least a part of the connecting rod by an external tool, the operating part is made of plastic, among which, there is at least one operating plane, operating hole, operating bump, operating groove on the outer wall of the operating part, or there is a cross-section conforming to the cross-section of the sleeve. The eccentric wheel has an eccentric groove, a clamp arm is provided on at least one inner wall of the eccentric groove, and the eccentric wheel can rotate between a release position and a lock position. Among them, when the eccentric wheel is in the release position, the connection boss is inserted into the eccentric groove through the insertion channel. When the eccentric wheel is in the lock position, the clamp arm restricts the connection boss from being pulled out of the eccentric groove. The connection assembly according to claim 1, characterized in that.

10. A first member and the connection assembly according to any one of claims 1 to 9, A mounting channel is provided on one side of the first member, connecting holes communicating with the mounting channel are provided at the upper and lower parts of the first member. The reinforcing member is inserted into the mounting channel, and the mounting space is connected corresponding to the connecting holes, so that the eccentric wheel is connected to the connecting holes. When switching the insert from the loose position to the lock position, the insert deforms and expands at least a part of the elastic part, whereby the tightening protrusion is pressed against the inner wall of the mounting channel. A connection system characterized by this.

11. A connection assembly including a reinforcing member and an eccentric wheel, The reinforcing member is provided with opposing connection ends and mounting ends. There is a connection channel at the end of the connection end, and an eccentric hole connecting to the connection channel at the mounting end. There is a deformation gap connecting to the eccentric hole on the outer wall of the mounting end, and a tightening protrusion on the outer wall of the mounting end. The outer peripheral side wall of the eccentric wheel is an eccentric arc surface, and the outer peripheral side wall of the eccentric wheel conforms to the inner peripheral side wall of the eccentric hole, and the eccentric wheel is rotatably provided in the eccentric hole. Among them, the eccentric wheel can rotate between a release position and a lock position. When switching the eccentric wheel from the loose position to the lock position, the eccentric wheel deforms and expands a part of the side wall of the mounting end. A connection assembly characterized by this.

12. The connection assembly according to claim 11, characterized in that the reinforcing member is circular along the line-of-sight direction from the connection end to the mounting end.

13. At least a part of the connection channel cooperates with an external tool to rotate the reinforcing member. The inner wall of the connection channel has at least one operation plane, operation bump or operation groove, or at least a part of the cross section of the connection channel is the same as the cross section of the inner ring of the sleeve. The connection assembly according to claim 11, characterized in that.

14. comprising a first member and the connection assembly according to any one of claims 11 to 13, a mounting channel is provided on one side of the first member, connecting holes communicating with the mounting channel are provided in the upper and lower portions of the first member, the reinforcing member is inserted into the mounting channel, the eccentric holes are connected corresponding to the connecting holes, and the eccentric wheel is connected to the connecting holes, when switching the eccentric wheel from the loosening position to the locking position, the eccentric wheel deforms and expands at least a part of the side wall of the mounting end, whereby the tightening protrusion is pressed against the inner wall of the mounting channel. A connection system characterized by this.

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