Connector and Its Assembly Method

Abstract

The present application discloses a connector and an assembly method thereof, relating to the technical field of connection. The connector includes a first nut, a screw member, a second nut, and a knob assembly; the first nut includes a first through hole penetrating through its interior along the extension direction of the first nut, and the first end of the screw member is located within the first through hole; the second nut includes a second through hole penetrating through its interior along the extension direction of the second nut, and the second end of the screw member is located within the second through hole; the second nut further includes a first recess, the extension direction of the first recess is perpendicular to the extension direction of the second through hole, the first recess and the second through hole communicate with each other, at least a part of the knob assembly is located within the first recess, and the knob assembly is engaged with the second end of the screw member. The present application realizes the splicing of plates through the connector, avoids the use of adhesives, is beneficial to improving the stability of plate splicing, and avoids the harm of chemical substances in the adhesives to the human body.

Description

Technical Field

[0001] This application relates to the field of connection technologies, and more specifically, to a connector and an assembly method thereof. Background Art

[0002] In the prior art, in the field of manufacturing wooden furniture, the splicing between boards is often achieved using a glue material (adhesive). However, the adhesive contains volatile chemicals. Correspondingly, when the wooden furniture is placed in people's activity space for a long time, it will cause certain harm to the human body; and after a long service life, the bonding ability of the adhesive will decrease, thus reducing the service life of the wooden furniture. Therefore, there is an urgent need to invent a component for splicing wooden furniture boards. Summary of the Invention

[0003] In view of this, the technical problem to be solved by this application is to provide a connector and an assembly method thereof. By using this connector to replace the adhesive for splicing between boards, it can avoid the harm of the adhesive to the human body and improve the service life of the furniture.

[0004] To solve the above technical problem, this application has the following technical solutions:

[0005] In a first aspect, this application provides a connector, including a first nut, a screw member, a second nut, and a knob assembly;

[0006] The first nut includes a first through hole penetrating through its interior along the extending direction of the first nut, and the first end of the screw member is located within the first through hole; the second nut includes a second through hole penetrating through its interior along the extending direction of the second nut, and the second end of the screw member is located within the second through hole;

[0007] The second nut further includes a first recess, the extending direction of the first recess is perpendicular to the extending direction of the second through hole, the first recess and the second through hole are in communication, at least a part of the knob assembly is located within the first recess, and the knob assembly is engaged with the second end of the screw member.

[0008] Optionally, among them:

[0009] The knob assembly includes a spherical torsion member and a hole plug. The spherical torsion member includes a second recess and a third recess. The recess direction of the second recess is a first direction, and the recess direction of the third recess is a second direction. The first direction and the second direction are perpendicular.

[0010] Optionally, among them:

[0011] The hole plug includes a bottom support and a protrusion located on one side of the bottom support. The protrusion is fixed within the third recess.

[0012] Optionally, where:

[0013] The outer diameter of the bottom bracket is D, and 6 mm ≤ D ≤ 7 mm.

[0014] Optionally, where:

[0015] The orthographic projection of the convex part in the second direction is located inside the orthographic projection of the bottom bracket in the second direction.

[0016] Optionally, where:

[0017] Along the second direction, one outer surface of the spherical torsion member further includes a limiting groove;

[0018] The inner side surface of the second nut further includes a limiting protrusion, and the limiting protrusion is located inside the orthographic projection of the first recessed part in the second direction;

[0019] The limiting groove and the limiting protrusion are correspondingly engaged.

[0020] Optionally, where:

[0021] The first end of the screw member is threadedly connected to the first nut.

[0022] Optionally, where:

[0023] The outer surface of the first nut is spiral-shaped; the outer surface of the second nut is spiral-shaped.

[0024] In a second aspect, the present application provides an assembly method for a connector, which is used for the connector; the knob assembly includes a spherical torsion member and a hole plug, and the spherical torsion member includes a second recessed part and a third recessed part;

[0025] The method includes:

[0026] Place the first end of the screw member into the first through hole of the first nut and fix it;

[0027] Place the second end of the screw member into the second through hole of the second nut;

[0028] Place the spherical torsion member into the second through hole through the first recessed part, and rotate the spherical torsion member so that the second recessed part of the spherical torsion member fixes the second end of the screw member;

[0029] Place the hole plug into the third recessed part of the spherical torsion member.

[0030] Compared with the prior art, the connector and its assembly method described in the present application achieve the following effects:

[0031] The connector provided by this application includes a first nut, a screw member, a second nut, and a knob assembly. The first nut and at least part of the screw member can be fixed inside one board, and at least part of the screw member and the second nut are located inside another board. Then, the screw member located inside the second nut is engaged by the knob assembly to achieve the splicing of the two boards. This application uses a metal / plastic connector to splice the boards, avoiding the use of adhesives, which is beneficial to improving the stability of the board splicing and avoiding the harm of chemical substances in the adhesives to the human body. Description of the Drawings

[0032] The drawings described herein are used to provide a further understanding of this application and form a part of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0033] Figure 1 Shown is an exploded view of a connector provided by an embodiment of this application;

[0034] Figure 2 Shown is what is provided by an embodiment of this application Figure 1 An enlarged view of the first nut therein;

[0035] Figure 3 Shown is what is provided by an embodiment of this application Figure 1 An enlarged view of the screw member therein;

[0036] Figure 4 Shown is what is provided by an embodiment of this application Figure 1 An enlarged view of the second nut therein;

[0037] Figure 5 Shown is what is provided by an embodiment of this application Figure 1 An enlarged view of the spherical torsion member therein;

[0038] Figure 6 Shown is what is provided by an embodiment of this application Figure 1 An enlarged view of the hole plug therein;

[0039] Figure 7 Shown is what is provided by an embodiment of this application Figure 1 A side elevation view of the spherical torsion member therein;

[0040] Figure 8 Shown is what is provided by an embodiment of this application Figure 1 A side view of the second nut therein;

[0041] Figure 9 Shown is what is provided by an embodiment of this application Figure 1 A top view of the second nut therein;

[0042] Figure 10 The following is a flowchart of a method for assembling a connector provided by an embodiment of the present application. Detailed implementation manners

[0043] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve the technical problems within a certain error range and basically achieve the technical effects.

[0044] In the prior art, in the field of manufacturing wooden furniture, the splicing between boards is often achieved by using a glue material (adhesive), but the glue material contains chemical drugs that are easy to volatilize. Correspondingly, when the wooden furniture is placed in people's activity space for a long time, it will cause certain harm to the human body; and after the glue material has been used for a long time, its bonding ability will decrease, thus reducing the service life of the wooden furniture. Therefore, there is an urgent need to invent a component for splicing wooden furniture boards.

[0045] In view of this, the technical problem to be solved by the present application is to provide a connector and an assembly method thereof, which use the connector to replace the glue material to achieve the splicing between boards, avoid the harm of the glue material to the human body, and improve the service life of the furniture.

[0046] The following is a specific description with reference to the accompanying drawings.

[0047] Figure 1 The following is an exploded view of a connector provided by an embodiment of the present application. Figure 2 The following is provided by an embodiment of the present application Figure 1 An enlarged view of the first nut in Figure 3 The following is provided by an embodiment of the present application Figure 1 An enlarged view of the screw member in Figure 4 The following is provided by an embodiment of the present application Figure 1 An enlarged view of the second nut in. Please refer to Figures 1 - 4 The present application provides a connector 100, including a first nut 10, a screw member 20, a second nut 30 and a knob assembly 40;

[0048] The first nut 10 includes a first through hole 11 that penetrates through its interior along the extending direction of the first nut 10, and the first end 21 of the screw member 20 is located within the first through hole 11; the second nut 30 includes a second through hole 31 that penetrates through its interior along the extending direction of the second nut 30, and the second end 22 of the screw member 20 is located within the second through hole 31;

[0049] The second nut 30 further includes a first recess 32, the extending direction of the first recess 32 is perpendicular to the extending direction of the second through hole 31, the first recess 32 and the second through hole 31 communicate with each other, at least a part of the knob assembly 40 is located within the first recess 32, and the knob assembly 40 engages with the second end 22 of the screw member 20.

[0050] Specifically, the present application provides a connecting member 100, which can be used for splicing between plates in wooden furniture; the connecting member 100 includes a first nut 10, a screw member 20, a second nut 30 and a knob assembly 40. Among them, the first nut 10 includes a first through hole 11 that penetrates through its interior along the extending direction of the first nut 10, and the first end 21 of the screw member 20 is inserted into the first through hole 11 of the first nut 10 to achieve the fixation of the first end 21 of the screw member 20 and the first nut 10.

[0051] The second nut 30 includes a second through hole 31 that penetrates through its interior along the extending direction of the second nut 30. The second nut 30 further includes a first recess 32 on the side away from the first nut 10. The extending direction of the first recess 32 is perpendicular to the extending direction of the second through hole 31, and the first recess 32 and the second through hole 31 communicate with each other. The second end 22 of the screw member 20 is inserted into the second through hole 31 of the second nut 30, and the second end 22 of the screw member 20 is exposed within the first recess 32; at least a part of the knob assembly 40 is located within the first recess 32, that is, the knob assembly 40 is placed through the first recess 32, and the knob assembly 40 engages with the second end 22 of the screw member 20, thereby realizing the fixed connection between the first nut 10, the screw member 20, the second nut 30 and the knob assembly 40.

[0052] For example, when the connecting member 100 is used to connect two plates, for example, the first nut 10 is screwed or nailed into the interior of the first plate, and the second nut 30 is screwed or nailed into the interior of the second plate. By fixing the screw member 20 to the first nut 10 and fixing the second end 22 of the screw member 20 inserted into the second nut 30 through the knob assembly 40, the connection and fixation of the two plates are realized; the splicing and fixation between the plates are realized through the connecting member 100 provided by the present application, avoiding the use of adhesives, which is beneficial to improving the stability of the plate splicing and can avoid the harm of chemical substances in the adhesives to the human body.

[0053] It should be noted that the present application does not specifically limit the shape of the orthographic projection of the first through hole 11 in the extending direction of the first nut 10. For example, it can be a regular hexagon, a circle, or other shapes, and users can make corresponding adjustments according to their own needs. Similarly, the present application does not specifically limit the shape of the orthographic projection of the second through hole 31 in the extending direction of the second nut 30.

[0054] Figure 5 Shown is provided by an embodiment of the present application Figure 1 an enlarged view of a spherical torsion member in Figure 6 Shown is provided by an embodiment of the present application Figure 1 an enlarged view of a hole plug in Figures 1 - 5 and Figure 6 . Optionally, the knob assembly 40 includes a spherical torsion member 41 and a hole plug 42. The spherical torsion member 41 includes a second recessed portion 411 and a third recessed portion 412. The recessed direction of the second recessed portion 411 is the first direction, and the recessed direction of the third recessed portion 412 is the second direction, and the first direction and the second direction are perpendicular.

[0055] Specifically, it should be noted that the connecting member 100 provided by the present application is actually a five-in-one connecting member 100. The knob assembly 40 in the connecting member 100 includes a spherical torsion member 41 and a hole plug 42, that is, the five-in-one connecting member 100 specifically includes five components: a first nut 10, a screw member 20, a second nut 30, a spherical torsion member 41, and a hole plug 42. Through the combination of these five components, the splicing and fixing of, for example, two sheets of plates can be achieved.

[0056] The spherical torsion member 41 in the knob assembly 40 provided by the present application includes a second recessed portion 411 and a third recessed portion 412. Among them, when the connecting member 100 is assembled, the recessed direction of the second recessed portion 411 is the extending direction of the second nut 30, and the recessed direction of the third recessed portion 412 is perpendicular to the recessed direction of the second recessed portion 411; it can also be said that when the recessed direction of the second recessed portion 411 is the first direction and the recessed direction of the third recessed portion 412 is the second direction, the first direction and the second direction are perpendicular.

[0057] The present application can realize the clamping of the second end 22 of the screw member 20 by using the second recessed portion 411 of the spherical torsion member 41, realize the fixation of the first nut 10, the screw member 20, and the second nut 30, and further facilitate the splicing of two adjacent sheets of plates, avoid the use of adhesive in the process of plate splicing, is beneficial to improving the stability of plate splicing, and can avoid the harm of chemical substances in the adhesive to the human body.

[0058] Please continue to refer to Figure 1 、 Figure 5 and Figure 6, optionally, the hole plug 42 includes a base 421 and a convex portion 422 located on one side of the base 421, and the convex portion 422 is fixed in the third recess 412.

[0059] Specifically, the hole plug 42 in the connector 100 provided in the present application includes a base 421 and a convex portion 422 located on one side of the base 421. At least part of the convex portion 422 of the base 421 is used to be placed in the third recess 412 of the spherical torsion member 41, and the fixing of the convex portion 422 and the third recess 412 is achieved; optionally, the material for making the convex portion 422 of the hole plug 42 can be at least selected as a material with good flexibility such as rubber. The outer diameter of the convex portion 422 can be made slightly larger than the inner diameter of the third recess 412. At this time, the method of inserting the convex portion 422 made of, for example, rubber material into the third recess 412 can achieve the fixing of the hole plug 42 to the third recess 412 of the spherical torsion member 41, which is beneficial to ensuring the fixing stability of the hole plug 42 and the spherical torsion member 41.

[0060] Optionally, the base 421 can also be selected to be made of a material with better flexibility such as rubber. At this time, the base 421 and the convex portion 422 of the hole plug 42 can be integrally formed using the same material, which simplifies the production process of the hole plug 42; of course, other materials can also be selected to make the base 421. For example, materials such as wood and plastic with the same color as the plate fixed by the connector 100 can be selected. The present application does not make specific limitations on this, and users can make corresponding material selections according to their needs. For example, users can consider factors such as the practicality of the base 421 of the hole plug 42 or the aesthetics of the surface of the base 421 far from the convex portion 422 exposed after being inserted into the plate, and then select the material for making the base 421 of the hole plug 42.

[0061] An optional way provided by the present application is, as Figure 6As shown, the convex part 422 may include a first convex part 4221 close to one side of the base 421 and a second convex part 4222 located on the side of the first convex part 4221 away from the base 421. Among them, the outer diameter of the first convex part 4221 may be set slightly larger than the outer diameter of the second convex part 4222. The hole plug 42 is placed into a small opening provided on the plate, so that at least the second convex part 4222 of the convex part 422 is fixed in the third recess 412 of the spherical torsion part 41, and the first convex part 4221 is fixed inside the small opening on the plate, making the contact and fixing effect between the first convex part 4221 and the plate better; if the outer diameter of the base 421 is only slightly larger than the outer diameter of the first convex part 4221, the base 421 can also be fixed in the small opening of the plate, so that the outer side surface of the base 421 and the surface of the plate are in a smooth state; if the outer diameter of the base 421 is large and cannot be inserted into the small opening of the plate, the base 421 is located outside the surface of the plate, which is convenient for removing the hole plug 42 when the fixed plate is disassembled later.

[0062] Please continue to refer to Figure 1 、 Figure 5 and Figure 6 , optionally, the outer diameter of the base 421 is D, and 6 mm ≤ D ≤ 7 mm.

[0063] Specifically, the outer diameter of the base 421 of the hole plug 42 provided in this application has an optional range of being made 6 mm - 7 mm. For example, after the convex part 422 of the hole plug 42 is inserted into the third recess 412 of the spherical torsion part 41, the outer diameter of the base 421 of the hole plug 42 can be correspondingly embedded into the corresponding small hole on the fixed plate. If the base 421 is also made of rubber material, at this time, the outer diameter of the base 421 reflected on the plate surface is about 6 mm or even less than 6 mm, then the surface area of the outer surface of the base 421 will also be relatively small, which is not obvious to the user's visual inspection and is beneficial to ensuring the aesthetics of the plate surface where the connector 100 is used.

[0064] Please continue to refer to Figure 1 、 Figure 5 and Figure 6 , optionally, the orthographic projection of the convex part 422 in the second direction is located inside the orthographic projection of the base 421 in the second direction.

[0065] Specifically, the specific structure of the hole plug 42 provided in this application is that when the hole plug 42 is placed into the third recess 412, the orthographic projection of the protruding portion 422 of the hole plug 42 in the second direction is located inside the orthographic projection of the base 421 in the second direction, that is, the outer diameter of the base 421 is greater than the outer diameter of the protruding portion 422, so as to avoid the situation where the entire hole plug 42 is inserted into the third recess 412 when the hole plug 42 is inserted into the spherical torsion member 41, so that the base 421 can be located outside the spherical torsion member 41; when the connecting member 100 is applied to a plate, the outer surface of the base 421 of the hole plug 42 should be in a smooth state with the surface of the plate, so as to fill the opening in the plate for placing the knob assembly 40, which is beneficial to ensuring the aesthetics of the surface of the plate using the connecting member 100; or the base 421 is located outside the surface of the plate, which is convenient for removing the hole plug 42 when the fixedly connected plate is subsequently disassembled.

[0066] Figure 7 The following shows a Figure 1 side elevation view of the spherical torsion member provided by an embodiment of this application, Figure 8 The following shows a Figure 1 side view of the second nut provided by an embodiment of this application, Figure 9 The following shows a Figure 1 top view of the second nut provided by an embodiment of this application. Please refer to Figure 1 and Figures 7 - 8 . Optionally, along the second direction, the outer surface of one side of the spherical torsion member 41 further includes a limiting groove 413;

[0067] The inner side surface of the second nut 30 further includes a limiting protrusion 33, and the limiting protrusion 33 is located inside the orthographic projection of the first recess 32 in the second direction;

[0068] The limiting groove 413 and the limiting protrusion 33 are correspondingly engaged.

[0069] Specifically, along the second direction, the outer surface of the other side of the spherical torsion member 41 corresponding to the opening of the third recess 412 includes a limiting groove 413, and this limiting groove 413 is a partial recessed groove facing the inside of the spherical torsion member 41 along the second direction; the inner side surface of the second nut 30 further includes a limiting protrusion 33 corresponding to the limiting groove 413, and the limiting protrusion 33 is located inside the orthographic projection of the first recess 32 in the second direction; when the spherical torsion member 41 is inserted into the second nut 30 through the first recess 32 and the second end 22 of the screw member 20 is engaged by rotating the spherical torsion member 41, the limiting groove 413 of the rotated spherical torsion member 41 and the limiting protrusion 33 on the inner side surface of the second nut 30 can be correspondingly engaged, which plays a role in limiting the position when the spherical torsion member 41 is inserted into the second nut 30, facilitating the user to fix the spherical torsion member 41 and the second nut 30.

[0070] It should also be noted that the outer wall of the spherical torsion member 41 along the second direction can be set to be serrated, so as to increase the resistance between the spherical torsion member 41 and the inner wall of the second nut 30 when the spherical torsion member 41 is inserted into the second through hole 31 through the first recess 32, and to prevent the spherical torsion member 41 from loosening and falling off from the second through hole 31 of the second nut 30 to a certain extent. In addition, an optional manufacturing method provided in the present application is that a plastic material can be selected for manufacturing the second nut 30, and a zinc alloy material can be selected for manufacturing the spherical torsion member 41. At the same time, the outer diameter of the manufactured spherical torsion member 41 is close to the inner diameter of the first recess 32 of the second nut 30, so that after the spherical torsion member 41 is pressed into the second nut 30, the fixing effect between the knob assembly 40 and the inner wall of the second nut 30 is better.

[0071] Please refer to Figures 1 - 3 , optionally, the first end 21 of the screw member 20 is threadedly connected to the first nut 10.

[0072] Specifically, the first end 21 of the screw member 20 is similar to a threaded flat head nail, and the inner wall of at least the second end of the first nut 10 includes threads corresponding to the threaded flat head nail, so as to realize the fixation between the first end 21 of the screw member 20 and the first nut 10 when the first end 21 of the screw member 20 is inserted into the first through hole 11 of the first nut 10.

[0073] Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 8 and Figure 9 , optionally, the outer surface 12 of the first nut 10 is spiral; the outer surface 39 of the second nut 30 is spiral.

[0074] Specifically, the outer surface 12 of the first nut 10 and the outer surface 39 of the second nut 30 provided in the present application can both be set to be threaded. When the first nut 10 is placed inside a plate to be spliced, the resistance between the first nut 10 and the plate can be increased, and the fixing stability between the first nut 10 and the plate can be improved; similarly, when the second nut 30 is placed inside another plate to be spliced, the threaded outer surface can also increase the resistance between the second nut 30 and the plate, and improve the fixing stability between the second nut 30 and the plate.

[0075] Please refer to Figure 4It should be added that a positioning point 35 corresponding to the center point of the concave surface of the first concave portion 32 can be provided on the surface of the second nut 30 close to the first nut 10. This positioning point 35 can be used to position the second nut 30 when it is placed into the corresponding plate, so that after the second nut 30 is nailed into the plate, the opening for the hole plug 42 to be inserted on the plate surface can exactly correspond to the first concave portion 32 for inserting the spherical torsion member 41, avoiding the situation where the knob assembly 40 cannot be placed after the second nut 30 is nailed into the plate.

[0076] Figure 10 The following is a flowchart of an assembly method for the connector provided by an embodiment of the present application. Please refer to Figures 1 - 9 on the basis of Figure 10 Based on the same inventive concept, the present application also provides an assembly method for a connector 100, which is used for the aforementioned connector 100; the knob assembly 40 includes a spherical torsion member 41 and a hole plug 42, and the spherical torsion member 41 includes a second concave portion 411 and a third concave portion 412;

[0077] The method includes:

[0078] Step 101: Insert the first end 21 of the screw member 20 into the first through hole 11 of the first nut 10 and fix it;

[0079] Step 102: Insert the second end 22 of the screw member 20 into the second through hole 31 of the second nut 30;

[0080] Step 103: Insert the spherical torsion member 41 into the second through hole 31 through the first concave portion 32, and rotate the spherical torsion member 41 to fix the second end 22 of the screw member 20 with the second concave portion 411 of the spherical torsion member 41;

[0081] Step 104: Insert the hole plug 42 into the third concave portion 412 of the spherical torsion member 41.

[0082] Specifically, based on the proposed connector 100, the present application also provides an assembly method for the connector 100, which is used for the aforementioned connector 100, specifically a five-in-one connector 100; the assembly method of the connector 100 mainly includes the following steps 101-step 104.

[0083] Step 101 is to place the first end 21 of the screw member 20 into the first through hole 11 of the first nut 10 and fix the first end 21 of the screw member 20 to the first nut 10; the second end 22 of the screw member 20 is placed into the second through hole 31 of the second nut 30 through step 102; then step 103 is to place the spherical torsion member 41 into the second through hole 31 through the first recess 32 and rotate the spherical torsion member 41 so that the second recess 411 of the spherical torsion member 41 engages exactly with the second end 22 of the screw member 20 in the second through hole 31, that is, the position of the screw member 20 is fixed by the spherical torsion member 41, and then in step 104, the hole plug 42 is placed into the third recess 412 of the spherical torsion member 41 to further fix the position of the screw member 20.

[0084] It should be noted that the process of the above assembly method of the connecting member is only one embodiment provided by the present application, and the present application is not limited thereto. For example, the processes of the other two assembly methods of the connecting member exemplified in the present application are as follows: The first one is: the second end 22 of the screw member 20 can be first placed into the second through hole 31 of the second nut 30; then the spherical torsion member 41 is placed into the second through hole 31 through the first recess 32 and rotated so that the second recess 411 of the spherical torsion member 41 fixes the second end 22 of the screw member 20; then the second end 22 of the screw member 20 is placed into the second through hole 31 of the second nut 30 and fixed; finally, the hole plug 42 is placed into the third recess 412 of the spherical torsion member 41. Or, the first one is: alternatively, the second end 22 of the screw member 20 can be first placed into the second through hole 31 of the second nut 30; then the spherical torsion member 41 is placed into the second through hole 31 through the first recess 32 and rotated so that the second recess 411 of the spherical torsion member 41 fixes the second end 22 of the screw member 20; then the hole plug 42 is placed into the third recess 412 of the spherical torsion member 41; finally, the second end 22 of the screw member 20 is placed into the second through hole 31 of the second nut 30 and fixed.

[0085] A specific usage method of the five-in-one connecting member 100 proposed by the present application is provided here:

[0086] Please refer to the attached drawings provided by the present application, drive or screw the first nut 10 into the first plate, then insert the first end 21 of the screw member 20 into the first nut 10, and fix the screw member 20 to the first nut 10 through the engagement of the threaded structure. The first end of the first nut 10 (the side end of the first nut 10 away from the second nut 30) includes a first opening 13 and a second opening 14 on the circumferential wall along its extending direction (as Figure 2As shown, the first opening 13 and the second opening 14 are symmetrically arranged; the inner diameters of the first nut 10 at the positions of the first opening 13 and the second opening 14 are relatively smaller than the remaining diameters of the first through hole 11. When the first end 21 of the screw member 20 is inserted into the first nut 10 and reaches the position where the first opening 13 and the second opening 14 are provided, the first end 21 of the screw member 20 will generate a force from the inside of the first through hole 11 to the outer wall on the first end of the first nut 10, making the contact reliability between the first nut 10 and the first plate higher; that is, the first opening 13 and the second opening 14 are provided at the first end of the first nut 10 here, so that the first nut 10 can have an effect similar to that of an expansion screw.

[0087] Then, the spherical torsion member 41 is placed into the first recess 32 of the second nut 30, and the second nut 30 is screwed or nailed into the second plate. The second end 22 of the screw member 20 fixed in the first plate is inserted into the second nut 30; along the direction perpendicular to the extension direction of the second nut 30, the second plate further includes an opening. Through this opening, the spherical torsion member 41 is rotated so that the second recess 411 of the spherical torsion member 41 faces the second end 22 of the screw member 20 inserted into the second nut 30, realizing the engagement of the spherical torsion member 41 with the second end of the screw member 20. Then, the hole plug 42 is placed into the third recess 412 of the spherical torsion member 41 through the opening on the second plate, realizing the sealing of the opening on the second plate; thus, the splicing of the first plate and the second plate is realized through the five-in-one connector 100 provided by the present application. The five-in-one connector 100 provided by the present application is made of metal or plastic. The splicing of the plates is realized through the metal / plastic connector 100, avoiding the use of adhesives, which is beneficial to improving the stability of the plate splicing and avoiding the harm of chemical substances in the adhesives to the human body.

[0088] It should be noted that the end of the second nut 30 far from the first nut 10 may also include a third opening 36 and a fourth opening 37 on the circumferential wall along its extension direction, where the third opening 36 or the fourth opening 37 penetrates to the first recess 32. When the spherical torsion member 41 rotates to engage the second end 22 of the screw member 20, the spherical torsion member 41 will apply a force from the inner wall to the outer wall on the part of the second nut 30 provided with the third opening 36 and the fourth opening 37 (as Figure 2 and Figure 9 shown). And since the outer wall of the second nut 30 can be set to include threads, the contact reliability between the second nut 30 and the second plate can be further improved; that is, the third opening 36 and the fourth opening 37 are provided at the end of the second nut 30 far from the first nut 10 here, so that the end of the second nut 30 far from the first nut 10 can have an effect similar to that of an expansion screw.

[0089] It should be noted that the manufacturing material of the connector 100 in this application is not limited to the above-mentioned metal / plastic. For example, available materials such as wood can also be used for manufacturing. That is, the manufacturing material of the connector 100 can be selected by the user according to actual needs.

[0090] As can be seen from the above embodiments, the beneficial effects of this application are as follows:

[0091] The connector provided in this application includes a first nut, a screw member, a second nut, and a knob assembly. The first nut and at least part of the screw member can be fixed inside one board, and at least part of the screw member and the second nut are located inside another board. Then, the screw member located inside the second nut is engaged through the knob assembly to achieve the splicing of the two boards. This application uses a metal / plastic connector to achieve the splicing of boards, avoiding the use of adhesives, which is beneficial to improving the stability of board splicing and avoiding the harm of chemical substances in the adhesives to the human body.

[0092] The above description shows and describes several preferred embodiments of this application. However, as mentioned before, it should be understood that this application is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in related fields. Any changes and modifications made by those skilled in the art without departing from the spirit and scope of this application shall fall within the protection scope of the appended claims of this application.

Claims

1. A connecting piece, characterized in that, it includes a first nut, a screw member, a second nut and a knob assembly; the first nut includes a first through hole penetrating through its interior along the extending direction of the first nut, and the first end of the screw member is located within the first through hole; the second nut includes a second through hole penetrating through its interior along the extending direction of the second nut, and the second end of the screw member is located within the second through hole; the second nut further includes a first recess, the extending direction of the first recess is perpendicular to the extending direction of the second through hole, the first recess and the second through hole communicate with each other, at least a part of the knob assembly is located within the first recess, and the knob assembly and the second end of the screw member are engaged; the knob assembly includes a spherical torsion member and a hole plug, the spherical torsion member includes a second recess and a third recess, the recessing direction of the second recess is a first direction, the recessing direction of the third recess is a second direction, and the first direction and the second direction are perpendicular; the hole plug includes a bottom support and a protruding portion located on one side of the bottom support, the protruding portion includes a first protruding portion and a second protruding portion connected to each other, the side of the first protruding portion away from the second protruding portion is connected to the bottom support, and the second protruding portion is fixed within the third recess; 2. The connecting piece according to claim 1, characterized in that, the outer diameter of the bottom support is D, and 6 mm ≤ D ≤ 7 mm.

3. The connecting piece according to claim 1, characterized in that, the orthographic projection of the protruding portion in the second direction is located within the orthographic projection of the bottom support in the second direction.

4. The connecting piece according to claim 1, characterized in that, along the second direction, the outer surface of one side of the spherical torsion member further includes a limiting groove; the inner side surface of the second nut further includes a limiting protrusion, and the limiting protrusion is located within the orthographic projection of the first recess in the second direction; the limiting groove and the limiting protrusion are correspondingly engaged.

5. The connecting piece according to claim 1, characterized in that, the first end of the screw member is threadedly connected to the first nut.

6. The connecting piece according to claim 1, characterized in that, the outer surface of the first nut is spiral-shaped; the outer surface of the second nut is spiral-shaped.

7. An assembling method of a connecting piece, characterized in that, it is used for the connecting piece according to any one of claims 1-6; the knob assembly includes a spherical torsion member and a hole plug, the spherical torsion member includes a second recess and a third recess; the hole plug includes a bottom support and a protruding portion located on one side of the bottom support, the protruding portion includes a first protruding portion and a second protruding portion connected to each other, the side of the first protruding portion away from the second protruding portion is connected to the bottom support; the method includes: placing the first end of the screw member into the first through hole of the first nut and fixing it; placing the second end of the screw member into the second through hole of the second nut; placing the spherical torsion member into the second through hole through the first recess and rotating the spherical torsion member to fix the second end of the screw member with the second recess of the spherical torsion member; Place the second protrusion of the hole plug into the third recess of the spherical torsion member.

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