Tool-free connecting device

Abstract

The utility model relates to a tool-free connecting device which comprises a first connecting piece, a second connecting piece and a limiting piece, and an anti-falling structure is arranged on the outer side of the first connecting piece. The second connecting piece is a cylinder, one end of the second connecting piece is detachably connected with one end of the first connecting piece, and a positioning part is arranged on the second connecting piece; a limiting part is arranged on the limiting piece and used for being detachably connected with the positioning part. The utility model designs a tool-free connecting fitting which can be applied to connection between two plate bodies, can be mounted without the aid of tools, and is convenient and quick.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture, in particular to a tool-free connection device. Background Art

[0002] The connection methods between furniture components currently include:

[0003] (1) Mortise and tenon joints. Mortise and tenon structures are mainly divided into half-mortise and through-mortise. Half-mortise has poor stability and is easy to loosen, while through-mortise has poor aesthetics and is difficult to disassemble and assemble.

[0004] (2) Screw connection, a more common connection method, generally requires the use of tools such as screwdrivers;

[0005] (3) Three-in-one connector. A three-in-one connector generally consists of an expansion bolt, a bolt, and an eccentric piece. The expansion bolt is used to be inserted into the hole on the front of the first plate. The bolt and the expansion bolt are threaded together to fix the expansion bolt and the bolt on the first plate. The other end of the bolt is inserted into the hole on the side of the second plate. The eccentric piece is then used to lock the bolt through the hole on the front, thereby connecting the two vertical plates.

[0006] The mortise and tenon connection method has poor stability or is difficult to disassemble and assemble, while the screw connection and the use of three-in-one connectors require the use of auxiliary tools and are not convenient enough. Utility Model Content

[0007] The technical problem to be solved by the present invention is to provide a tool-free connection device in view of the above shortcomings.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A tool-free connection device comprises a first connection member, a second connection member and a limit member, wherein an anti-slip structure is provided on the outer side of the first connection member;

[0010] The second connecting member is a column, one end of the second connecting member is detachably connected to one end of the first connecting member, and a positioning portion is provided on the second connecting member;

[0011] The limiting member is provided with a limiting portion, and the limiting portion is used to be detachably connected to the positioning portion.

[0012] Furthermore, the anti-slip structure includes multiple circles of barbs arranged along the length direction of the first connecting piece.

[0013] Furthermore, the first connecting member and the second connecting member are connected by threaded connection, bayonet connection or latch connection.

[0014] Furthermore, the second connecting member is a cylinder.

[0015] Furthermore, a first anti-slip pattern is provided on the outer side of the second connecting member.

[0016] Furthermore, the positioning portion is a groove formed on the second connecting member;

[0017] The limiting portion is a cutout, which is opened at one end of the limiting member. The opening of the cutout is narrowed, and the groove can be inserted into the cutout.

[0018] Furthermore, an annular groove is provided on the second connecting member, and a groove position is formed on the annular groove of the second connecting member.

[0019] Furthermore, a second anti-slip pattern is provided on the inner side of the incision.

[0020] Furthermore, a boss is provided at one end of the limiting member away from the incision.

[0021] Furthermore, a plurality of anti-slip protrusions are provided on the outer side of the limiting member.

[0022] Compared with the prior art, the present invention has the following advantages after adopting the above technical solution:

[0023] The utility model designs a tool-free connection accessory, which can be used for connecting two plates and can be installed without the help of tools, which is convenient and quick.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional structural diagram of the first embodiment of the present utility model (the first connecting member, the second connecting member and the limiting member are in an assembled state);

[0026] Figure 2 This is an exploded view of the first embodiment of the present utility model;

[0027] Figure 3 This is an exploded view from another perspective of the first embodiment of the present invention;

[0028] Figure 4 This is an assembly diagram of the first embodiment of the present utility model;

[0029] Figure 5 This is a diagram showing the completed assembly of Example 1 of the present utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0031] 1. First connecting piece; 1A. Anti-slip structure; 11. Barb;

[0032] 2. Second connecting member; 2A. Positioning portion; 21. First anti-slip groove; 22. Groove position; 23. Annular groove;

[0033] 3. Limiting member; 31. Notch; 32. Second anti-slip groove; 33. Boss; 34. Anti-slip protrusion; 3A. Limiting portion;

[0034] 4. First plate; 41. First hole;

[0035] 5. Second plate; 51. Second hole; 52. Third hole. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "clockwise" and "counterclockwise" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0038] Example 1:

[0039] like Figures 1 to 3 shown.

[0040] The first connecting member 1 is a cylinder, and a threaded hole is formed at the first end of the first connecting member 1 , and the threaded hole is concentric and coaxial with the first connecting member 1 ;

[0041] The outer side of the first connecting member 1 is provided with a plurality of circles of barbs 11 . The barbs 11 are arranged along the length direction of the first connecting member 1 , and the outer sides of the barbs 11 are tilted toward the first end of the first connecting member 1 .

[0042] The second connecting member 2 is a cylinder, and a thread is provided on the first end of the second connecting member 2. The thread at the first end of the second connecting member 2 can be threadedly assembled with the threaded hole on the first connecting member 1. After assembly, the second connecting member 2 and the first connecting member 1 are coaxial.

[0043] The second connecting member 2 has an annular groove 23 formed near the second end thereof, and a groove portion 22, i.e., a positioning portion 2A, is formed in the annular groove 23. The groove portion 22 can be inserted into the cutout 31 from the opening thereof under the action of an external force, and the groove portion 22 is confined within the cutout 31 by the narrowing structure at the opening thereof.

[0044] A circle of first anti-slip grooves 21 is provided in the middle of the second connecting member 2 . The first anti-slip grooves 21 extend along the length direction of the second connecting member 2 . The first anti-slip grooves 21 facilitate the user to rotate the second connecting member 2 .

[0045] The limiting member 3 is a cylinder. A notch 31 is formed at the first end of the limiting member 3. The inner side of the notch 31 extends toward the second end of the first connecting member 1. The opening of the notch 31 is narrowed (i.e., the width of the opening of the notch 31 is smaller than the maximum width inside the notch 31). A plurality of second anti-slip grooves 32 are provided in the notch 31 (preferably provided at the opening of the notch 31). The second anti-slip grooves 32 are used to increase the friction between the inner wall of the notch 31 and the groove 22 to prevent the limiting member 3 from separating from the second connecting member 2.

[0046] A plurality of anti-slip protrusions 34 are provided on the outer wall of the second connecting member 1. The anti-slip protrusions 34 are used to increase the friction between the limiting member 3 and the hole wall (the hole on the plate);

[0047] The second end of the second connecting member 1 is provided with a boss 33 structure, and the boss 33 is convenient for the user to press.

[0048] like Figure 4 As shown, the installation process of this embodiment is:

[0049] 1. Align the second end of the first connecting member 1 with the first hole 41, and insert the first connecting member 1 into the first hole 41. Press it until the first connecting member 1 is inserted into the first hole 41, with the first end (threaded hole) of the first connecting member 1 facing outward.

[0050] The first connecting member 1 is confined within the first hole 41 by the barb 11 (anti-slip structure 1A);

[0051] 2. Align the first end of the second connecting member 2 with the threaded hole, and screw the first end of the second connecting member 2 into the threaded hole to threadably assemble the first connecting member 1 and the second connecting member 2;

[0052] 3. Align the second end of the second connecting member 2 with the second hole 51, and move the first plate 4 and the second plate 5 relative to each other so that the second connecting member 2 is inserted into the second hole 51. At this time, the groove 22 (positioning portion 2A) is aligned with the third hole 52;

[0053] 4. Align the first end of the limiting member 3 with the third hole 52 and the cutout 31 (limiting portion 3A) with the groove 22 (positioning portion 2A), and insert the limiting member 3 into the third hole 52 so that the groove 22 is embedded in the cutout 31.

[0054] Multiple sets of connecting devices can be provided on the first plate body 4 and the second plate body 5 as needed. After repeating the above process, the connection between the first plate body 4 and the second plate body 5 is completed. Figure 5shown.

[0055] Example 2:

[0056] The structure of this embodiment is substantially the same as that of the first embodiment, and the difference lies in the anti-slip structure 1A.

[0057] An anti-slip structure 1A is provided on the outer side of the first connecting member 1. The first connecting member 1 is used to be fixed in the first hole 41 on the first plate 1 through the anti-slip structure 1A. The first plate 1 can also be replaced with other furniture modules, such as armrests, bases, etc.

[0058] Through the anti-slip structure 1A, the outer wall of the first connecting member 1 and the inner wall of the first hole 41 are interference fit to confine the first connecting member 1 within the first hole 41. The anti-slip structure 1A can adopt structures such as barbs 11, anti-slip grooves, and protrusions according to the usage scenario.

[0059] For example, when the first connecting member 1 is made of a material with a certain hardness such as metal, and the first plate body 1 is a wooden board, anti-slip grooves can be provided on the outer side of the first connecting member 1. When installing the first connecting member 1, the first connecting member 1 is pushed into the first hole with force so that the outer wall of the first connecting member 1 and the inner wall of the first hole 41 fit tightly together, so that the first connecting member 1 is embedded in the first hole 41.

[0060] Example 3:

[0061] The structure of this embodiment is substantially the same as that of the first embodiment, and the difference lies in the positioning portion 2A and the limiting portion 3A.

[0062] As an embodiment, the positioning portion 2A may be a structure such as a hole, a protrusion, a groove or a threaded hole, and the limiting portion 3A may be a structure such as a protrusion, a hole, a cutout or a stud that cooperates with the positioning portion 2A.

[0063] The key point of the structure of the positioning portion 2A and the limiting portion 3A is an assembly structure that does not require the use of tools for connection.

[0064] For example: the positioning portion 2A is a hole opened on the second connecting member 2;

[0065] The limiting portion 3A is a protrusion provided on the first end of the limiting member 3, and the protrusion and the hole cooperate with each other.

[0066] After the second connecting member 2 is installed in the second hole 51 , the protrusion and the hole are aligned, and the limiting member 3 is inserted into the third hole 52 so that the protrusion is inserted into the hole to complete the assembly of the limiting member 3 and the second connecting member 2 .

[0067] Example 4:

[0068] The structure of this embodiment is substantially the same as that of the first embodiment, and the difference lies in the connection method between the first connecting member 1 and the second connecting member 2 .

[0069] In this embodiment, the first connecting member 1 and the second connecting member 2 are connected by threaded connection, bayonet connection or latch connection, and the key point of the structure is an assembly structure that can be connected without using tools.

[0070] When the connection is threaded, preferably, the outer side of the second connecting member 2 is provided with a first anti-slip groove 21, and the shape of the second connecting member 2 is cylindrical to facilitate rotation.

[0071] The above description is merely an example of the preferred embodiment of the present invention. Any details not described in detail are common knowledge within the art. The scope of protection of the present invention is determined by the claims. Any equivalent modifications based on the technical teachings of the present invention are also within the scope of protection of the present invention.

Claims

1. A tool-free connection device, characterized in that: It comprises a first connecting member (1), a second connecting member (2) and a limiting member (3), wherein an anti-slip structure (1A) is provided on the outer side of the first connecting member (1); The second connecting member (2) is a column, one end of the second connecting member (2) is detachably connected to one end of the first connecting member (1), and a positioning portion (2A) is provided on the second connecting member (2); The limiting member (3) is provided with a limiting portion (3A), and the limiting portion (3A) is used for being detachably connected to the positioning portion (2A).

2. The tool-free connection device according to claim 1, characterized in that The anti-slip structure (1A) comprises a plurality of circles of barbs (11) arranged along the length direction of the first connecting member (1).

3. The tool-free connection device according to claim 1, wherein: The first connecting member (1) and the second connecting member (2) are connected in a threaded connection, a bayonet connection or a latch connection.

4. The tool-free connection device according to claim 1, wherein: The second connecting member (2) is a cylinder.

5. The tool-free connection device according to claim 1, wherein: The outer side of the second connecting member (2) is provided with a first anti-slip pattern (21).

6. The tool-free connection device according to claim 1, wherein: The positioning portion (2A) is a groove (22) provided on the second connecting member (2); The limiting portion (3A) is a cutout (31), which is opened at one end of the limiting member (3). The opening of the cutout (31) is narrowed, and the groove position (22) can be inserted into the cutout (31).

7. The tool-free connection device according to claim 6, characterized in that: An annular groove (23) is provided on the second connecting member (2), and a groove position (22) is formed on the second connecting member (2) at the annular groove (23).

8. The tool-free connection device according to claim 6, wherein: A second anti-slip pattern (32) is provided on the inner side of the incision (31).

9. The tool-free connection device according to claim 6, wherein: A boss (33) is provided at one end of the limiting member (3) away from the notch (31).

10. The tool-free connection device according to claim 1, wherein: A plurality of anti-slip protrusions (34) are provided on the outer side of the limiting member (3).

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