Anti-loose thread fastening assembly

Abstract

The utility model discloses an anti-loose thread fastening assembly which is characterized in that a connecting plate and a connected plate are connected and fixed through a fastener penetrating through a gasket, one or more groups of elastic ramps are uniformly distributed on the front surface of the gasket along a central hole, and one or more bulges positioned outside the circumferential range of the ramps are arranged on the back surface of the gasket. Notches penetrating through the thickness direction of the gasket are distributed on the periphery of the bulge; one or more groups of rigid ramps are uniformly distributed along the central hole of the fastener; and the rigid ramps correspond to the elastic ramps and are consistent with the elastic ramps in quantity. By means of the novel simple structure, reverse rotation between the fastening piece and the connecting piece is avoided, the problem of thread loosening is effectively solved, and the fastening piece can be applied to various connecting occasions.

Description

Technical Field

[0001] The utility model relates to the field of threaded fasteners, in particular to an anti-loosening threaded fastening assembly. Background Art

[0002] Threaded fasteners are a widely used type of fixed connection, offering advantages such as simple structure, reliable connection, and easy assembly and disassembly. However, anti-loosening measures are particularly important. In critical applications, particularly those subject to frequent vibration, existing anti-loosening measures are ineffective and prone to loosening. Connection failures caused by loose threads often lead to serious accidents.

[0003] Therefore, it is necessary to develop new anti-loosening thread fastening assemblies to effectively solve the problem of thread loosening. Utility Model Content

[0004] Purpose of the utility model: In view of the deficiencies and defects of the existing technology, the utility model provides an anti-loosening thread fastening assembly, which avoids reverse rotation between the fastener and the connecting part through a new simple structure, effectively solves the problem of loose threads, and can be applied to a variety of connection occasions.

[0005] Technical solution: The anti-loosening threaded fastening assembly of the utility model is characterized in that: the connecting plate and the connected plate are connected and fixed by a fastener passing through the washer, a group or multiple groups of elastic ramps are evenly distributed along the center hole on the front side of the washer, and one or more protrusions located outside the circumference of the ramp are provided on the back side of the washer, and slots are distributed around the protrusions and pass through the thickness direction of the washer; the fasteners are evenly distributed along the center hole. One or multiple groups of rigid ramps correspond to the elastic ramps and the number is the same.

[0006] Wherein, the fastener is a bolt structure, and a rigid ramp is provided at the bottom of the nut of the bolt.

[0007] The screw rod portion of the bolt passes through the connecting plate and the connected plate, and the rigid ramp at the bottom of the nut corresponds to the elastic ramp on the front of the washer.

[0008] Wherein, the fastener is a screw structure, and a rigid ramp is provided at the bottom of the screw nut.

[0009] The screw rod portion of the screw passes through the connecting plate and the connected plate, and the rigid ramp at the bottom of the screw corresponds to the elastic ramp on the front side of the washer.

[0010] Wherein, the fastener is a nut structure, a rigid ramp is provided at the bottom of the nut, and the nut is connected to the welded stud plate.

[0011] Wherein, the welding stud plate passes through the connecting plate and the connected plate and is connected with the nut, and the rigid ramp at the bottom of the nut corresponds to the elastic ramp on the front of the washer.

[0012] Beneficial Effects: Compared with existing technologies, the present invention offers the following significant advantages: It achieves reliable mechanical anti-loosening effects by simply modifying conventional threaded fasteners. The washer's ramp and notch can be stamped, and the protrusion can be either stamped or forged. The fastener's ramp is produced in a single step using cold forging. Only one or two additional small holes are required on the connector to mate with the washer's protrusion. This invention incurs minimal additional costs and does not increase operational complexity. It is easy to use, provides excellent anti-loosening effects, significantly reduces the risk of thread failure, and can be applied to a variety of connection situations. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the structural intention of the gasket of the present utility model;

[0014] Figure 2 This is a schematic diagram of the top view of the gasket of the present invention;

[0015] Figure 3 This is a front structural diagram of the gasket of the present utility model;

[0016] Figure 4 This is a schematic diagram of the back structure of the gasket of the present invention;

[0017] Figure 5 This is a schematic structural diagram of the fastener (bolt) of the present utility model;

[0018] Figure 6 This is a front view structural diagram of the fastener (bolt) of the present invention;

[0019] Figure 7 This is a schematic diagram of the three-dimensional structure of the fastener (bolt) of the present utility model;

[0020] Figure 8 This is a schematic structural diagram of the fastener (screw) of the present utility model;

[0021] Figure 9 This is a front view structural diagram of the fastener (screw) of the present invention;

[0022] Figure 10 This is a schematic diagram of the three-dimensional structure of the fastener (screw) of the present utility model;

[0023] Figure 11 This is a schematic structural diagram of the fastener (nut) of the present utility model;

[0024] Figure 12 This is a schematic diagram of the cross-sectional structure of the fastener (nut) of the present utility model;

[0025] Figure 13 This is a schematic diagram of the three-dimensional structure of the fastener (nut) of the present utility model;

[0026] Figure 14 This is a schematic structural diagram of the fastener of the present invention before tightening;

[0027] Figure 15 This is a schematic diagram of the structure of the fastener of the utility model during tightening Figure 1 ;

[0028] Figure 16 This is a schematic diagram of the structure of the fastener of the utility model during tightening Figure 2 ;

[0029] Figure 17 This is a schematic diagram of the structure of the fastener of the utility model after tightening Figure 1 ;

[0030] Figure 18 This is a schematic diagram of the structure of the fastener of the utility model after tightening Figure 2 ;

[0031] Figure 19 This is a schematic structural diagram of Example 1 of the present utility model;

[0032] Figure 20 This is a schematic structural diagram of Example 2 of the present utility model;

[0033] In the figure, 1 is a washer; 101 is an elastic ramp; 102 is a protrusion; 103 is a notch; 2 is a fastener; 201 is a rigid ramp; 3 is a connecting plate; 4 is a connected plate; and 5 is a welded stud plate. DETAILED DESCRIPTION

[0034] The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0035] The anti-loosening threaded fastening assembly of the present invention connects and fixes the connecting plate 3 and the connected plate 4 by means of a fastener 2 passing through a washer 1. The front side of the washer 1 is provided with one or more elastic ramps 101 evenly distributed along the center hole, and the back side of the washer 1 is provided with one or more protrusions 102 located outside the circumference of the ramps, and notches 103 are distributed around the protrusions 102 and pass through the thickness direction of the washer; the fastener 2 is provided with one or more rigid ramps 201 evenly distributed along the center hole, and the rigid ramps 201 correspond to the elastic ramps 101 and are the same in number.

[0036] like Figure 1-4; Based on the ordinary flat washer, the following features are added: 1. On the front of the washer 1, there are one or more groups of elastic ramps 101 evenly distributed along the center hole, with a height of H1; 2. On the back of the washer 1, there are one or more protrusions 102 located outside the circumference of the ramp, with a circumscribed circle diameter of ΦD1 and a distance from its center to the center hole of R; 3. Slots 103 are distributed around the protrusions 102 and penetrate the thickness direction of the washer 1.

[0037] The fastener 2 includes three structures. Based on the common fastener, the additional features are: on the plane that cooperates with the washer 1, one or more rigid ramps 201 are evenly distributed along the center hole. The height is H2. The number of rigid ramps 201 is the same as the elastic ramps 101 of the washer 1:

[0038] like Figure 5-7 Structure 1: The fastener 2 is a bolt structure, and the bottom of the bolt nut is provided with a rigid ramp 201. The screw portion of the bolt passes through the connecting plate 3 and the connected plate 4, and the rigid ramp 201 at the bottom of the nut corresponds to the elastic ramp 101 on the front of the washer 1.

[0039] like Figure 8-10 Structure 2: The fastener 2 is a screw structure, and the bottom of the screw nut is provided with a rigid ramp 201. The screw portion of the screw passes through the connecting plate 3 and the connected plate 4, and the rigid ramp 201 at the bottom of the screw corresponds to the elastic ramp 101 on the front of the washer 1.

[0040] like Figure 11-13 Structure 3: The fastener 2 is a nut structure with a rigid ramp 201 at the bottom of the nut. The nut is connected to the welded stud plate 5. The welded stud plate 5 passes through the connecting plate 3 and the connected plate 4 and is connected to the nut. The rigid ramp 201 at the bottom of the nut corresponds to the elastic ramp 101 on the front of the washer 1.

[0041] like Figure 14-18 Schematic diagram for preventing looseness:

[0042] like Figure 14 Schematic diagram of the fastener structure before tightening. In addition to the fastener holes, connecting plate 3 must be machined with blind holes or through holes with a center distance R between the holes. The diameter is ΦD2 (ΦD2 is slightly larger than ΦD1). The number and distribution of these holes should match those of protrusions 102 on washer 1. Place protrusions 102 on washer 1 into the corresponding holes on connecting plate 3. Initially, screw fastener 2 into the threaded hole on connected plate 4. The height H1 of elastic ramp 101 should be less than the height H2 of protrusion 201.

[0043] like Figure 15-16 , a schematic diagram of the structure of the fastener being tightened, at which time the rigid ramp 201 of the fastener 2 gradually flattens the elastic ramp 101 of the washer 1. That is, the height of the rigid ramp 201 remains at H2, while the height of the elastic ramp 101 decreases from H1 to H3.

[0044] like Figure 17-18 , a schematic diagram of the structure of the fastener after tightening, at this time, the plane of the fastener 2 is in contact with the plane of the washer 1, the rigid ramp 201 is separated from the elastic ramp 101, and the height of the elastic ramp 101 is restored to H1. Since the protrusion 102 of the washer 1 is fitted with the connector 3, the washer 1 and the connector 3 cannot rotate relative to each other; and since H1 is less than H2, the fastener 2 cannot rotate in the direction of loosening the thread. Therefore, a reliable mechanical anti-loosening effect is achieved. To release the anti-loosening effect, use a tool such as a chisel or a flathead screwdriver to pry the notch 103 of the washer 1 to remove the protrusion 102 from the connector 3 before loosening the fastener 2.

[0045] Example 1:

[0046] like Figure 19 The fastener 2 is a screw structure. After the fastener 2 (screw) is tightened, the washer 1 and the connecting plate 3 cannot rotate relative to each other. The rigid ramp 201 of the fastener 2 (screw) conflicts with the elastic ramp 101 of the washer 1, so that the thread cannot be loosened, achieving a mechanical anti-loosening state.

[0047] Example 2:

[0048] like Figure 20 The fastener 2 is a nut structure and is provided with a welded stud plate 5. After the upper end thread of the welded stud of the welded stud plate 5 is tightened with the fastener 2 (nut), the washer 1 and the connecting plate 3 cannot rotate relative to each other. The rigid ramp 201 of the fastener 2 (nut) conflicts with the elastic ramp 101 of the washer 1, so that the thread cannot be loosened, achieving a mechanical anti-loosening state.

Claims

1. Anti-loosening thread fastening assembly, characterized by: The connecting plate (3) and the connected plate (4) are connected and fixed by a fastener (2) passing through the washer (1); the front side of the washer (1) is provided with one or more groups of elastic ramps (101) evenly distributed along the center hole; the back side of the washer (1) is provided with one or more protrusions (102) located outside the circumference of the ramps; and notches (103) are distributed around the protrusions (102) and pass through the thickness direction of the washer; the fastener (2) is provided with one or more groups of rigid ramps (201) evenly distributed along the center hole, and the rigid ramps (201) correspond to the elastic ramps (101) and are the same in number.

2. The anti-loosening thread fastening assembly according to claim 1, characterized in that: The fastener (2) is a bolt structure, and a rigid ramp (201) is provided at the bottom of the nut of the bolt.

3. The anti-loosening thread fastening assembly according to claim 2, characterized in that: The screw rod portion of the bolt passes through the connecting plate (3) and the connected plate (4), and the rigid ramp (201) at the bottom of the nut corresponds to the elastic ramp (101) on the front of the washer (1).

4. The anti-loosening thread fastening assembly according to claim 1, characterized in that: The fastener (2) is a screw structure, and a rigid ramp (201) is provided at the bottom of the screw nut.

5. The anti-loosening thread fastening assembly according to claim 4, characterized in that: The screw rod portion of the screw passes through the connecting plate (3) and the connected plate (4), and the rigid ramp (201) at the bottom of the screw corresponds to the elastic ramp (101) on the front of the washer (1).

6. The anti-loosening thread fastening assembly according to claim 1, characterized in that: The fastener (2) is a nut structure, a rigid ramp (201) is provided at the bottom of the nut, and the nut is connected to the welding stud plate (5).

7. The anti-loosening thread fastening assembly according to claim 1, characterized in that: The welding stud plate (5) passes through the connecting plate (3) and the connected plate (4) and is connected to the nut. The rigid ramp (201) at the bottom of the nut corresponds to the elastic ramp (101) on the front of the washer (1).

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