Connecting structure based on rubber matrix embedded wing-shaped nut and manufacturing method

Abstract

The invention provides a connecting structure based on embedding a wing-shaped nut in a rubber matrix and a manufacturing method, the connecting structure comprises a connecting piece, a connecting screw, the rubber matrix and the wing-shaped nut, the wing-shaped nut is embedded and fixed in the rubber matrix, and the connecting piece and the rubber matrix are in threaded connection through the connecting screw and the wing-shaped nut, so that stable connection is realized. Adopted auxiliary parts comprise a fixing screw, a fixing base plate and an outer sheath, and the wing-shaped nut is embedded and fixed into the rubber base body through a specific technology. The wing-shaped nut can be stably embedded into the rubber part, stable connection between the rubber part structure and other structures is finally guaranteed by combining the inclined plane platform design of the connecting part, and disassembly and replacement are easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of connection between a structural part and a rubber part, and mainly relates to a connection structure based on a wing-shaped nut embedded in a rubber matrix and a manufacturing method thereof. Background Art

[0002] For the connection between structural parts with different material properties, especially when there is rubber inside the structural parts, the easy deformation of rubber makes it difficult to achieve a stable connection with other structural parts through mechanical connection. The common method is to connect different structural parts through fastening clamps or gluing. Fastening clamps will take up space and make the overall structure complicated; gluing will make the implementation process complicated. When bonding a large area, uneven bonding and cavitation are prone to occur. After bonding, it is difficult to replace the structural parts.

[0003] Usually, when considering the connection between structural parts and rubber parts, combined with the replacement of rubber structural parts and the ease of connection, a metal structure can be embedded in the rubber matrix by gluing. Usually the embedded metal structure is a nut. The contact area between the nut and the rubber matrix is ​​limited, and under large torque conditions, there is no other form of constraint between the nut and the rubber matrix except the bonding surface, so debonding is prone to occur, resulting in failure of the connection structure.

[0004] Disadvantages of the existing technology: There is no embedded connection structure inside the rubber part, or the embedded connection structure is usually considered to be embedded with a nut, but when the nut is subjected to a large external torque force inside the rubber part, it is easy to debond from the rubber bonding surface, resulting in separation of the nut and the rubber, resulting in separation of equipment connection, damage to structural parts, etc. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and to provide a connection structure and a manufacturing method based on a wing nut embedded in a rubber matrix, which can achieve a stable embedding of a metal structure in a rubber part, combined with the inclined platform design of the connecting part, ultimately ensuring a stable connection between the rubber part structure and other structures, and making disassembly and replacement simple and convenient.

[0006] The purpose of the present invention is achieved through the following technical solutions.

[0007] On the one hand, the present invention proposes a connection structure based on a wing-shaped nut embedded in a rubber matrix, including a connecting piece, a connecting screw, a rubber matrix and a wing-shaped nut, wherein the wing-shaped nut is embedded and fixed inside the rubber matrix, and the connecting piece and the rubber matrix are threadedly connected to the wing-shaped nut through a connecting screw, thereby achieving a stable connection.

[0008] Furthermore, the connecting member is provided with a plurality of mounting holes for cooperating with the connecting screws, and a plurality of mounting ears for connecting with other external components are provided on the side of the connecting member.

[0009] Furthermore, the mounting ears are provided with threaded holes and through holes, wherein the threaded holes are used to connect the connecting piece with the structural piece in front contact, and the through holes are used to connect the connecting piece with the structural piece in back contact.

[0010] Furthermore, the hole at the contact surface between the mounting hole and the rubber substrate is in the form of a straight cylinder, and the mounting hole and the surface away from the rubber substrate are countersunk holes. The bevel angle of the countersunk hole is consistent with the bevel angle of the connecting screw, thereby achieving a tight fitting connection between the two structures.

[0011] Furthermore, the depth of the inclined surface of the countersunk hole should be greater than the depth of the inclined surface of the connecting screw, so that after the connecting screw is connected to the wing nut, the top of the connecting screw is completely sunk into the connecting piece.

[0012] On the other hand, the present invention provides a method for manufacturing a connection structure based on a wing-shaped nut embedded in a rubber matrix, comprising the following steps:

[0013] Step 1: Determine the size, quantity and spacing of the wing nuts according to the size of the connector and the rubber matrix and factors related to the connection strength;

[0014] Step 2, pass the fixing screw through the fixing base plate and thread it with the wing nut, cover the other position where the fixing screw is not connected with the wing nut with an outer sheath, and thread the outer sheath with the fixing screw through the thread on the inner surface, so as to form an assembly;

[0015] Step 3, performing rubber vulcanization treatment on the components above the fixed base plate, and vulcanizing the wing nut inside the rubber matrix;

[0016] Step 4: Remove the fixing screws, fix the base plate and the outer sheath;

[0017] Step 5: Drill a hole on the connector, and thread the connecting screw through the mounting hole of the connector and connect it to the wing nut.

[0018] Furthermore, before step 2, the outer surface of the wing nut is firstly subjected to sandblasting roughening and decontamination treatment, and then the treated wing nut is brushed with primer.

[0019] Furthermore, in step 2, the outer sheath is made of metal and the outer surface in contact with the rubber substrate is coated with an anti-bonding material to avoid bonding with the rubber substrate.

[0020] Furthermore, in step 5, the specific steps of opening a hole in the connecting member are:

[0021] Step 1, open a mounting hole on the connector. The hole at the contact surface between the mounting hole and the rubber substrate is a straight tube. The mounting hole and the surface away from the rubber substrate are countersunk holes. The bevel of the countersunk hole is roughened. The bevel angle of the countersunk hole is required to be consistent with the bevel angle of the connecting screw. The bevel depth of the countersunk hole should be greater than the bevel depth of the connecting screw, so that after the connecting screw is connected to the wing nut, the top of the connecting screw is completely sunk into the connector.

[0022] Step 2: Open threaded holes and through holes on the mounting ears of the connector.

[0023] The beneficial effects of the present invention are:

[0024] 1. Use wing nuts and embed and fix them inside the rubber matrix. Compared with conventional nuts, the wing-shaped structure of the wing nut has a larger contact surface with the rubber. On the one hand, it can expand the bonding area, and on the other hand, it can constrain the rubber. Under large torque conditions, the wing nut will not rotate in the rubber matrix. The wing nut is embedded in the rubber matrix by gluing and vulcanization, which can maintain a stable connection with the rubber matrix. At the same time, based on the wing nut and combined with the design of the connector, a stable connection between materials with different properties can be achieved.

[0025] 2. The auxiliary parts used include fixing screws, a fixing base plate and an outer sheath. The fixing screws are fixed to the wing nuts through the fixing base plate, and the wing nuts are embedded and fixed inside the rubber matrix using a specific process. The space left after removing the fixing screws and the outer sheath is just used for the assembly of the connecting screws, which solves the problem that the wing nuts are difficult to embed and fasten inside the rubber matrix.

[0026] 3. In the present invention, the outer surface of the wing nut is roughened and decontaminated by sandblasting, and the thread of the wing nut is protected during the process to prevent the thread from being damaged during the sandblasting process, thereby affecting the connection between the wing nut and the connecting screw.

[0027] 4. Cover the other positions where the fixing screw and the wing nut are not connected with an outer sheath. The outer sheath is made of metal and the outer surface in contact with the rubber matrix is ​​coated with anti-bonding material to avoid bonding with the rubber matrix. The inner surface of the outer sheath has threads to achieve connection with the fixing screw.

[0028] 5. The connecting parts adopt the inclined platform design, and the mounting hole position is designed with the inclined contact surface with the connecting screw to increase the contact area, reduce the contact stress intensity and enhance reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art or ordinary technicians, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is a schematic diagram of the structure of the present invention.

[0031] Figure 2 for Figure 1 Top view of the connecting piece.

[0032] Figure 3 for Figure 1 Cross-sectional view of the connecting piece.

[0033] Figure 4 This is a cross-sectional view of the wing nut fixing structure during the manufacturing process of the present invention.

[0034] Explanation of the reference numerals: connecting piece 1, mounting ear 1-1, mounting hole 1-2, threaded hole 1-1-1, through hole 1-1-2, connecting screw 2, rubber base 3, wing nut 4, fixing base plate 5, fixing screw 6, outer sheath 7. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0036] Example: Figure 1 As shown, a connection structure based on a wing nut embedded in a rubber matrix includes a connector 1, a connecting screw 2, a rubber matrix 3 and a wing nut 4. The wing nut 4 is embedded and fixed inside the rubber matrix 3, and the connector 1 and the rubber matrix 3 are threadedly connected with the wing nut 4 through the connecting screw 2. The wing nut is embedded inside the rubber matrix, mainly to ensure that the rubber matrix can be firmly connected to the connector, requiring the wing nut to have a large rigidity, and at the same time requiring the wing nut to be fixed inside the rubber matrix to avoid slipping and twisting when the connecting screw is connected to the wing nut; the rubber matrix belongs to the component to be connected; the connecting screw mainly functions to realize the assembly of the connector and the rubber matrix, and cooperates with the connector to achieve a stable and reliable connection.

[0037] like Figure 2-Figure 3As shown, in this embodiment, the connector 1 is provided with 3*4, a total of 12 mounting holes 1-2 for matching with the connecting screws 2, and 4 mounting ears 1-1 are provided on the left and right sides of the connector 1, and the mounting ears are used to achieve connection with other external components. The mounting ears 1-1 are provided with threaded holes 1-1-1 and through holes 1-1-2, wherein the threaded holes 1-1-1 are convenient for connecting the connector 1 with the structural member in front contact, and the through holes 1-1-2 are convenient for connecting the connector 1 with the structural member in back contact.

[0038] In this embodiment, the hole at the contact surface between the mounting hole 1-2 and the rubber substrate is in the form of a straight cylinder, and the mounting hole 1-2 and the surface away from the rubber substrate are countersunk holes, and the angle of the bevel of the countersunk hole is consistent with the angle of the bevel of the connecting screw, so that the two structures are tightly matched and connected. The depth of the bevel of the countersunk hole should be greater than the depth of the bevel of the connecting screw, so that after the connecting screw 2 is connected to the wing nut 4, the top of the connecting screw 2 is completely sunk into the connecting piece 1.

[0039] Mechanism of the invention: The invention has the ability to achieve a stable connection between rubber parts and structures of different types. The wing nut is embedded in the rubber matrix by adhesive vulcanization to maintain a stable connection with the rubber matrix; the connecting screw cooperates with the wing nut to achieve a stable connection between the connecting part and the rubber matrix; multiple mounting holes are designed inside the connecting part, and a contact surface with the bevel of the connecting screw is designed at the position of the mounting hole to increase the contact area, reduce the contact stress intensity, and enhance reliability. At the same time, combined with the design of the connecting part, a stable connection of multiple structures is achieved.

[0040] This embodiment proposes a method for manufacturing a connection structure based on a wing-shaped nut embedded in a rubber matrix, comprising the following steps:

[0041] Step 1, determining the size, quantity, and spacing of the wing nuts 4 according to factors such as the size and connection strength of the connector 1 and the rubber matrix 3;

[0042] Step 2, make a hole in the rubber matrix and vulcanize the wing nut inside the rubber matrix. The specific process is: (1) sandblast the outer surface of the wing nut for roughening and decontamination. In this process, the thread of the wing nut needs to be protected to prevent the thread from being damaged during sandblasting and affecting the connection between the wing nut and the connecting screw; (2) brush the treated wing nut with primer, the function of the primer is to achieve a stable and tight connection with the rubber matrix; (3) pass the fixing screw 6 through the fixed base plate 5 and thread it with the wing nut 4, and cover the other positions where the fixing screw 5 is not connected to the wing nut 4 with an outer sheath 7. The outer sheath is made of metal and the outer surface in contact with the rubber matrix is ​​coated with anti-bonding material to avoid bonding with the rubber matrix; the outer sheath 7 is threadedly connected to the fixing screw 6 through the thread on the inner surface; (4) The fixing screw is used to fix the wing nut through the fixed base plate, and the wing nut is vulcanized inside the rubber matrix. The specific assembly diagram is shown as follows. Figure 4 shown.

[0043] Step 4, remove the fixing screws 6, fix the base plate 5 and the outer sheath 7;

[0044] Step 5, drilling a hole on the connector 1, the specific process is as follows: (1) The hole at the contact surface between the mounting hole 1-2 and the rubber substrate is in the form of a straight cylinder, and the mounting hole 1-2 and the surface away from the rubber substrate are countersunk holes. The inclined surface of the countersunk hole is roughened, the main function of which is to increase the friction between the connecting screw and the connecting structure; (2) The inclined surface angle of the countersunk hole is required to be consistent with the inclined surface angle of the connecting screw to achieve a tight fit between the two structures; (3) The inclined surface depth of the countersunk hole should be greater than the inclined surface depth of the connecting screw, so that after the connecting screw 2 is connected to the wing nut 4, the top of the connecting screw 2 is completely sunk into the connector 1 to ensure the flatness of the connecting structure. (4) The connecting screw 2 is passed through the mounting hole 1-2 of the connector 1 and threadedly connected to the wing nut 4. The connecting screw cooperates with the wing nut to achieve a stable connection between the connector and the rubber substrate.

[0045] Step 6: Open a threaded hole 1-1-1 and a through hole 1-1-2 on the mounting ear 1-1 of the connector 1. Two types of holes are designed at the mounting ear of the connector, one is a threaded hole structure, which is conducive to the stable connection between other structures and the connector; the other is a through hole structure, which is convenient for the connector to be connected to other structures above and below, and then to be firmly connected to other structures.

[0046] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A connection structure based on a wing nut embedded in a rubber matrix, characterized in that: The invention comprises a connecting piece (1), a connecting screw (2), a rubber matrix (3) and a wing-shaped nut (4); the wing-shaped nut (4) is embedded and fixed inside the rubber matrix (3); the connecting piece (1) and the rubber matrix (3) are threadedly connected to the wing-shaped nut (4) via the connecting screw (2), thereby achieving a stable connection.

2. The connection structure based on the wing-shaped nut embedded in the rubber matrix according to claim 1 is characterized in that: The connecting piece (1) is provided with a plurality of mounting holes (1-2) for cooperating with the connecting screws (2), and the side edge of the connecting piece (1) is provided with a plurality of mounting ears (1-1) for connecting with other external components.

3. The connection structure based on the wing-shaped nut embedded in the rubber matrix according to claim 2 is characterized in that: The mounting ear (1-1) is provided with a threaded hole (1-1-1) and a through hole (1-1-2), wherein the threaded hole (1-1-1) is used to connect the connecting piece (1) with a structural piece in front contact, and the through hole (1-1-2) is used to connect the connecting piece (1) with a structural piece in back contact.

4. The connection structure based on the wing-shaped nut embedded in the rubber matrix according to claim 2 is characterized in that: The hole at the contact surface between the mounting hole (1-2) and the rubber base is in the form of a straight cylinder, and the mounting hole (1-2) and the surface away from the rubber base are countersunk holes, and the bevel angle of the countersunk hole is consistent with the bevel angle of the connecting screw, so that the two structures are tightly matched and connected.

5. The connection structure based on the wing-shaped nut embedded in the rubber matrix according to claim 4 is characterized in that: The depth of the inclined surface of the countersunk hole should be greater than the depth of the inclined surface of the connecting screw, so that after the connecting screw (2) is connected to the wing nut (4), the top of the connecting screw (2) is completely sunk into the connecting piece (1).

6. A method for manufacturing a connection structure based on a wing nut embedded in a rubber matrix as claimed in any one of claims 1 to 5, characterized in that: The steps include: Step 1: Determine the size, quantity and spacing of the wing nuts (4) according to the size of the connecting piece (1) and the rubber matrix (3) and factors related to the connection strength; Step 2, passing the fixing screw (6) through the fixing base plate (5) and threadingly connecting it with the wing nut (4), covering the other position where the fixing screw (5) and the wing nut (4) are not connected with the outer sheath (7), and the outer sheath (7) is threadingly connected with the fixing screw (6) through the thread on the inner surface, thereby forming an assembly; Step 3, performing rubber vulcanization treatment on the components above the fixed base plate (5), and vulcanizing the wing nut (4) inside the rubber matrix (3); Step 4, remove the fixing screws (6), the fixing base plate (5) and the outer sheath (7); Step 5: Drill a hole on the connecting piece (1), and insert the connecting screw (2) through the mounting hole (1-2) of the connecting piece (1) and thread it into the wing nut (4).

7. The method according to claim 6, characterized in that: Before step 2, the outer surface of the wing nut (4) is firstly subjected to sandblasting roughening and decontamination treatment, and then the treated wing nut (4) is brushed with primer.

8. The method according to claim 6, characterized in that: In step 2, the outer sheath (7) is made of metal and the outer surface in contact with the rubber matrix is ​​coated with an anti-bonding material to avoid bonding with the rubber matrix.

9. The method according to claim 6, characterized in that: In step 5, the specific steps of opening a hole in the connecting member (1) are as follows: Step 1, a mounting hole (1-2) is opened on the connecting piece (1), the hole at the contact surface between the mounting hole (1-2) and the rubber substrate is in the form of a straight cylinder, the mounting hole (1-2) and the surface away from the rubber substrate are countersunk holes, and the inclined surface of the countersunk hole is roughened; the inclined surface angle of the countersunk hole is required to be consistent with the inclined surface angle of the connecting screw, and the inclined surface depth of the countersunk hole should be greater than the inclined surface depth of the connecting screw, so that after the connecting screw (2) is connected to the wing nut (4), the top of the connecting screw (2) is completely sunk into the connecting piece (1); Step 2: A threaded hole (1-1-1) and a through hole (1-1-2) are formed on the mounting ear (1-1) of the connector (1).

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