An automatic centering type double-stacked self-locking washer

Abstract

The utility model relates to the field of fastener, concretely is a kind of automatic centering type double-stacked self-locking washer.It includes washer one and washer two of coaxial superposition distribution, washer one has toothing one in the end axially away from washer two, and the other end is coaxial distribution conical surface one, washer two has toothing two in the end axially away from washer one, and the other end is conical surface two that is in accord with conical surface one.The utility model improves the anti-loose performance of threaded connection by inhibiting the radial slip of nut, and does not increase disassembly torque.

Description

Technical Field

[0001] This utility model relates to the field of fasteners, and in particular to an automatic centering double-layer self-locking washer. Background Technology

[0002] Threaded connections offer advantages such as low cost, easy assembly and disassembly, and high connecting force, making them widely used in machinery, transportation, and construction. However, in practical applications, due to various vibrations and impacts, threaded connections are prone to loosening. Loose threads not only reduce connecting force and lead to connection failure, but can also cause serious safety accidents in severe cases. Therefore, certain anti-loosening measures are necessary.

[0003] Double-layer self-locking washers are a commonly used type of anti-loosening fastener with excellent anti-loosening effect. Traditional double-layer self-locking washers rely on increasing the disassembly torque to prevent loosening, which, while providing an anti-loosening effect, also increases the difficulty of disassembling threaded connections. Utility Model Content

[0004] The purpose of this invention is to address the problems existing in the background technology by proposing an automatic centering double-layer self-locking washer, which improves the anti-loosening performance of the threaded connection by suppressing the radial slippage of the nut, without increasing the disassembly torque, so that the threaded connection can be easily disassembled while producing an anti-loosening effect.

[0005] The technical solution of this utility model is an automatic centering type double-layer self-locking washer, which includes a washer 1 and a washer 2 coaxially stacked. The end of the washer 1 that is axially away from the washer 2 has a toothed surface 1, and the other end has a coaxially distributed conical surface 1. The end of the washer 2 that is axially away from the washer 1 has a toothed surface 2, and the other end has a conical surface 2 that matches the conical surface 1.

[0006] Preferably, one conical surface is concave and the other conical surface is convex.

[0007] Preferably, the washer has an inner circumferential surface coaxially distributed in the middle and an outer circumferential surface coaxially distributed in the periphery.

[0008] Preferably, the second washer has an inner circumferential surface two coaxially distributed in the middle and an outer circumferential surface two coaxially distributed in the periphery.

[0009] Preferably, both tooth surface one and tooth surface two include multiple tooth-shaped modules that are evenly distributed in a ring, and the multiple tooth-shaped modules are connected in a ring in sequence.

[0010] Preferably, the toothed module includes inclined surface one and inclined surface two, with one end of inclined surface one and one end of inclined surface two connected.

[0011] Preferably, the area of ​​inclined plane one is smaller than the area of ​​inclined plane two.

[0012] Preferably, the connecting ends of inclined plane one and inclined plane two are intersection lines, and the extension line of the intersection line passes through the central axis of washer one and washer two.

[0013] Preferably, the plane perpendicular to the central axis of the washer is used as the reference plane, the angle between the first inclined plane and the reference plane is between 50 degrees and 70 degrees, and the angle between the second inclined plane and the reference plane is between 5 degrees and 70 degrees.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects: The present invention improves the anti-loosening performance of the threaded connection by suppressing the radial slippage of the nut. When installing washer one and washer two, the conical surface one of washer one and the conical surface two of washer two are automatically centered and coaxially matched, suppressing the radial slippage of each other, thereby achieving the anti-loosening effect, but without restricting the relative rotation of washer one and washer two, and without increasing the disassembly torque, so that the threaded connection is easy to disassemble while producing the anti-loosening effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; Figure 2 for Figure 1 Structural sectional view; Figure 3 This is a structural schematic diagram of the washer from a flip-over perspective. Figure 4 A schematic diagram of the tooth-shaped module composed of inclined plane one and inclined plane two; Figure 5 This is a schematic diagram of the structure of washer two; Figure 6 This is a schematic diagram of the structure of this utility model when applied to prevent bolts and nuts from loosening.

[0016] Reference numerals in the attached diagram: 1. Washer 1; 11. Inner circumferential surface 1; 12. Outer circumferential surface 1; 13. Tooth surface 1; 131. Inclined surface 1; 1311. Intersection line; 132. Inclined surface 2; 14. Conical surface 1; 2. Washer 2; 21. Inner circumferential surface 2; 22. Outer circumferential surface 2; 23. Tooth surface 2; 24. Conical surface 2. Detailed Implementation

[0017] like Figures 1-5 As shown, this embodiment proposes an automatic centering double-layer self-locking washer, comprising washer 1 and washer 2 coaxially stacked. Washer 1 has a toothed surface 13 at one end axially away from washer 2, and a coaxially distributed conical surface 14 at the other end. Washer 2 has a toothed surface 23 at one end axially away from washer 1, and a conical surface 24 that mates with conical surface 14 at the other end. Washer 1 and washer 2 are positioned and stacked together by conical surface 14 and conical surface 24, and the outer toothed surfaces 13 and 23 are used to prevent loosening. Figure 6As shown, washers 1 and 2 are placed around the outer circumference of the bolt, and the nut is tightened so that the toothed surface 13 on the top of washer 1 is embedded in the bottom of the nut, and the toothed surface 23 on the bottom of washer 2 is embedded in the top of the clamped part, thereby achieving anti-loosening when the bolt and nut are connected.

[0018] like Figure 2 As shown, conical surface 14 is concave and conical surface 24 is convex, which can position washers 1 and 2 for coaxial installation. After washers 1 and 2 are installed in place, conical surfaces 14 and 24 fit together but do not affect each other's rotation or increase the torque during disassembly.

[0019] Washer 1 has a coaxially distributed inner circumferential surface 11 in the middle and a coaxially distributed outer circumferential surface 12 on the periphery. Washer 2 has a coaxially distributed inner circumferential surface 21 in the middle and a coaxially distributed outer circumferential surface 22 on the periphery. The bolt can pass through the inner circumferential surface 11 and the inner circumferential surface 21. The inner circumferential surface 11 and the inner circumferential surface 21 are aligned, and the outer circumferential surface 12 and the outer circumferential surface 22 are aligned, resulting in a regular overall structure.

[0020] like Figures 3-5 As shown, both tooth surface 13 and tooth surface 23 include multiple tooth-shaped modules evenly distributed in a ring. Specifically, the multiple tooth-shaped modules in tooth surface 13 are evenly distributed around the central axis of washer 1, and the multiple tooth-shaped modules in tooth surface 23 are evenly distributed around the central axis of washer 2. The multiple tooth-shaped modules are connected sequentially in a ring. Each tooth-shaped module includes inclined surfaces 131 and 132. One end of inclined surface 131 is connected to one end of inclined surface 132, and the other end of inclined surface 131 is connected to one end of inclined surface 132 in an adjacent tooth-shaped module. The other end of inclined surface 132 is connected to one end of inclined surface 131 in an adjacent tooth-shaped module. The multiple tooth-shaped modules are connected to each other in a ring, and the projections of both the inner and outer circumferences are circular.

[0021] The area of ​​inclined plane 131 is smaller than that of inclined plane 132. The connection point between inclined plane 131 and inclined plane 132 is intersection line 1311. The extension line of intersection line 1311 passes through the central axis of washer 1 and washer 2, resulting in a more regular structural design. Taking the plane perpendicular to the central axis of washer 1 as the reference plane, the angle between inclined plane 131 and the reference plane is between 50 degrees and 70 degrees, and the angle between inclined plane 132 and the reference plane is between 5 degrees and 70 degrees. Within the inclination angle range of the two inclined planes, the protruding intersection line 1311 can be used to embed into the clamped part 1 or the nut, achieving an anti-loosening effect.

[0022] This embodiment improves the anti-loosening performance of the threaded connection by suppressing the radial slippage of the nut, without restricting the relative rotation of washer 1 and washer 2, and without increasing the disassembly torque, making the threaded connection easy to disassemble while providing an anti-loosening effect. After the bolt is passed through clamped part 2 and clamped part 1, washer 2 and washer 1 are put on, and then the nut is screwed on and tightened to form a preload. Under the action of the preload, clamped part 1, clamped part 2, and this self-centering double-layer self-locking washer are clamped. The sharp corner (i.e., intersection line 1311) on the tooth surface 13 of washer 1 will be embedded into the nut material due to compression, thereby restricting the relative slippage between washer 1 and the nut. Similarly, the sharp corner (i.e., intersection line 1311) on the tooth surface 23 of washer 2 will also be embedded into the clamped part 1 material due to compression, thereby restricting the relative slippage between washer 2 and clamped part 1. At this time, the conical surface 14 of washer 1 and the conical surface 24 of washer 2 automatically center and coaxially engage, inhibiting each other's radial slippage, thereby inhibiting the relative slippage between the nut and the clamped part 1, and thus achieving the anti-loosening effect.

[0023] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A self-centering double-layer self-locking washer, characterized in that, The device includes a washer 1 (1) and a washer 2 (2) that are coaxially stacked. The washer 1 (1) has a toothed surface 1 (13) at one end axially away from the washer 2 (2) and a coaxially distributed conical surface 1 (14) at the other end. The washer 2 (2) has a toothed surface 2 (23) at one end axially away from the washer 1 (1) and a conical surface 2 (24) that matches the conical surface 1 (14) at the other end. Both the toothed surface 1 (13) and the toothed surface 2 (23) include a uniformly distributed ring. Multiple toothed modules are connected in a ring. Each toothed module includes inclined plane 1 (131) and inclined plane 2 (132) with an inclined plane distributed at an angle. One end of inclined plane 1 (131) and one end of inclined plane 2 (132) are connected. The plane perpendicular to the central axis of washer 1 (1) is used as the reference plane. The angle between inclined plane 1 (131) and the reference plane is between 50 degrees and 70 degrees, and the angle between inclined plane 2 (132) and the reference plane is between 5 degrees and 70 degrees.

2. The self-centering double-layer self-locking washer according to claim 1, characterized in that, Conical surface one (14) is concave, and conical surface two (24) is convex.

3. The self-centering double-layer self-locking washer according to claim 1, characterized in that, Washer 1 (1) has an inner circumferential surface 1 (11) with coaxial distribution in the middle and an outer circumferential surface 1 (12) with coaxial distribution in the outer periphery.

4. The self-centering double-layer self-locking washer according to claim 3, characterized in that, Washer 2 (2) has an inner circumferential surface 2 (21) coaxially distributed in the middle and an outer circumferential surface 2 (22) coaxially distributed in the outer periphery.

5. The self-centering double-layer self-locking washer according to claim 1, characterized in that, The area of ​​inclined plane 1 (131) is smaller than the area of ​​inclined plane 2 (132).

6. The self-centering double-layer self-locking washer according to claim 1, characterized in that, The connection point of inclined plane 1 (131) and inclined plane 2 (132) is the intersection line (1311), and the extension line of the intersection line (1311) passes through the central axis of washer 1 (1) and washer 2 (2).

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