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Anti-loose connection pair

A connection pair and anti-loosening technology, which is applied in the direction of connection components, threaded fasteners, screws, etc., can solve the problems of bolt connection pair loosening and falling off, and achieve the effect of not being easy to loosen, increasing friction, and ensuring overall strength

Pending Publication Date: 2020-02-28
贾贤杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides an anti-loosening connection pair to solve the technical problem that the bolt connection pair is likely to loosen or even fall off under the state of high-frequency vibration when the mechanical equipment is running.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as Figure 1-4 As shown, an anti-loosening connection pair includes an eccentric bolt (100), a locking bolt (200) and a backstop (300), the backstop (300) acts as a thrust washer, and the eccentric bolt (100 ) includes a screw part (110) and an inner nut (120a), the backwash washer is sleeved on the screw part (110), and the inner nut (120a) is set at one end of the screw part (110) In the groove, the central axis of the screw part (110) and the central axis of the inner nut (120a) are not on the same straight line. The locking bolt (200) is coaxially provided with a flange part I (210), a boss part I (220) and a bolt part (230) connected in sequence, and the bolt part (230) is connected to the inner nut (120a ) threaded connection.

[0051] The outer wall of the screw part (110) is provided with an external thread I (111), the external thread I (111) is a right-handed thread, and the inner wall of the inner nut (120a) is provided with an internal thread I (120a-...

Embodiment 2

[0056] Different from Example 1, as Figure 5 As shown, an anti-loosening connection pair includes an eccentric bolt (100), a locking bolt (200) and a backstop (300), the backstop (300) is a backnut, and the eccentric bolt (100) It includes a screw part (110) and an inner nut (120a), the stop nut is sleeved on the screw part (110), and the inner nut (120a) is a groove opened at one end of the screw part (110) , the central axis of the screw part (110) and the central axis of the inner nut (120a) are not on the same straight line. The locking bolt (200) is coaxially provided with a flange part I (210), a boss part I (220) and a bolt part (230) connected in sequence, and the bolt part (230) is connected to the inner nut (120a ) threaded connection.

[0057] The outer wall of the screw part (110) is provided with an external thread I (111), the external thread I (111) is a right-handed thread, and the stop nut is provided with a The same internal thread II (330), the internal ...

Embodiment 3

[0062] Different from Example 1, as Figure 6-8 As shown, an anti-loosening connection pair includes an eccentric bolt (100), a lock nut (400) and a backstop (300), the backstop (300) is a backwash washer, and the eccentric bolt (100 ) includes an integral screw part (110) and an extension bolt (120b), the anti-backwash washer is sleeved on the screw part (110), and the central axis of the screw part (110) is aligned with the extension bolt ( 120b) are not on the same straight line. The lock nut (400) includes a flange part II (410), a boss part II (420) and a nut part (430) coaxially arranged, and the nut part (430) passes through the flange part II ( 410 ), at the axis of the boss portion II ( 420 ), the nut portion ( 430 ) is threadedly connected with the extension bolt ( 120 b ).

[0063] The anti-retraction washer is sheathed on the screw part (110) of the eccentric bolt (100) through interference fit. An external thread I (111) is provided on the outer wall of the scr...

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Abstract

The invention discloses an anti-loose connection pair which comprises an eccentric bolt, a retaining piece and a locking piece, wherein the eccentric bolt comprises a screw part, an inner nut or an extending bolt being in threaded matched with the locking piece is arranged at one end of the screw part, and the inner nut or the extending bolt is not in the same straight line with the axis of the screw part; the retaining piece is arranged on the screw part in a sleeving mode, and a raised part is arranged on the side, facing the locking piece, of the retaining piece; a C-shaped bayonet is formed in the raised part; and the locking piece is abutted against the retaining piece and is stuck into the C-shaped bayonet. When a machine with the connection pair is in the state of high-frequency vibration, the connection pair is more reliable and stable for locking due to the existence of multiple functions.

Description

technical field [0001] The invention belongs to the technical field of fasteners, in particular to an anti-loosening connection pair. Background technique [0002] Mechanical equipment usually adopts threaded connection, and most of the fasteners are connected and fastened by ordinary bolts and nuts, that is, ordinary bolt pairs. For metal structure products that need to be disassembled and assembled frequently, it provides convenience in disassembly and assembly. However, this connection method is easy to loosen in the environment of mechanical vibration and variable load. The way of increasing friction in the prior art is to loosen the machine or prevent the loosening between bolts and nuts, while the commonly used ways to increase friction are to add spring nuts or double nuts, inlay nylon washers, set concave cones or apply adhesives etc., but the nut will loosen within a certain gap, the reuse rate is low, and the installation conditions are greatly restricted, resulti...

Claims

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Application Information

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IPC IPC(8): F16B39/02F16B39/16F16B39/10F16B39/24F16B39/282
CPCF16B39/021F16B39/16F16B39/10F16B39/24F16B39/282
Inventor 贾贤杰蒋旭
Owner 贾贤杰
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