Miniature anti-loosening structure

Abstract

The invention relates to a micro anti-loosening structure, which comprises a socket shell, a plug shell, a connecting ring, an anti-loosening reed, a rivet, a clamp spring and the like, the socket shell is in threaded connection with the connecting ring, a guide structure is designed between the socket shell and the plug shell, the anti-loose reed is assembled in a circular ring groove of the connecting ring, the anti-loose reed is riveted on the connecting ring through a rivet and can rotate along with the connecting ring, and a V-shaped straight groove structure is designed at a corresponding position of the plug shell. Convex ribs are arranged in the middles of the two sides of the anti-loose reed. After the plug and the socket are connected, the convex rib on the anti-loose reed enters the V-shaped groove on the plug shell to prevent the connecting ring from continuously rotating. When the force is continuously increased to rotate the connecting ring, the convex peak on the V-shaped groove edge of the plug shell pushes away the convex rib on the anti-loose reed, the reed deforms, and the connecting ring can continuously rotate. The structure can prevent the connector from accidentally loosening. The anti-loosening function of the micro-circular threaded connection mechanism is achieved, the micro-circular threaded connection mechanism is prevented from being accidentally loosened under the mechanical environment conditions such as vibration and impact, and the connection reliability is improved.

Description

Technical Field

[0001] The invention relates to a micro anti-loosening structure, which is mainly used between micro joints connected by thread, and can be used for anti-loosening between a micro connector plug and a socket, or for connection and anti-loosening between micro liquid or gas channels. Background Art

[0002] As equipment performance continues to improve, the requirements for the mechanical properties of the devices used are also getting higher and higher. Threaded connection mechanisms are prone to loosening under high vibration and strong impact conditions. The existing thread anti-loosening structure is complex, the machining efficiency is low, and miniaturization cannot be achieved. Summary of the invention

[0003] The purpose of the present invention is to design a miniature anti-loosening mechanism to solve the anti-loosening problem of miniature products.

[0004] The technical solution adopted by the present invention is: a micro-circular anti-loosening structure, which takes a connector as an example, includes a socket shell, a plug shell, a sealing ring, a connecting ring, an anti-loosening spring, a rivet, and a retaining spring. The connecting part of the socket shell is processed with a connecting thread, the connecting ring is assembled outside the plug shell, and the anti-loosening spring is assembled in the circular groove of the connecting ring. The corresponding position of the plug shell is processed with a "V"-shaped straight groove structure. After the anti-loosening spring is assembled with the connecting ring through rivets, it can rotate with the connecting ring and cannot fall out. The convex ribs on the anti-loosening spring can simultaneously enter the "V"-shaped straight groove of the plug housing, preventing the connection ring and the plug housing from rotating relative to each other. When the connection ring is turned with force, the convex peaks on the side of the "V"-shaped groove on the plug housing push the anti-loosening spring obliquely upward to bend and deform, leaving some space, so that the connection ring can rotate relative to the plug housing. That is, the connection ring must overcome the bending stress of the spring when it rotates over each convex peak on the plug housing. This process continues throughout the entire connection and separation stroke. By designing the force structure of the anti-loosening spring, it is ensured that the connection ring increases a smaller anti-loosening torque when connected; and always provides a larger anti-loosening torque when separated.

[0005] The invention has the advantages of using a miniaturized anti-loosening spring to prevent the threaded mechanism from loosening, solving the anti-loosening problem of miniaturized threaded connection products, and being able to prevent the connection mechanism from accidentally loosening under strong vibration and high impact mechanical environment conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 It is a schematic diagram of the micro-anti-loosening structure of the present invention.

[0007] Figure 2 Is adopted Figure 1 A schematic cross-sectional view of the anti-loosening structure implemented by the anti-loosening spring sheet, connecting ring, rivet and matching plug housing.

[0008] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention. DETAILED DESCRIPTION

[0009] The present invention is described in detail below with reference to the accompanying drawings and specific examples.

[0010] The present invention Figure 1 , Figure 2 and Figure 3 As shown, it consists of a socket housing, a plug housing, a connecting ring, a locking spring, a rivet, a sealing ring and a retaining spring.

[0011] Figure 1 In the embodiment, the left end of the plug housing (2) is designed as a circular structure with a smaller diameter and is designed with an external convex key. The front end of the connecting ring (4) is processed with an internal thread and can rotate relative to the plug housing (2). The right side of the connecting ring (4) is designed with a circular groove. The anti-loosening spring (5) is riveted to the connecting ring (4) through a rivet (6). After riveting, it passes through the smaller diameter part of the plug housing (2) from the left end and is blocked and limited by a larger diameter section of the plug housing (2). The right side of the connecting ring (4) is blocked by a retaining spring (7) that is later installed in the circular groove of the plug housing (2). A sealing ring (3) is installed at the step of the plug housing (2). The right end of the socket housing (1) is processed with an external thread, and a keyway is processed in the inner hole along the axial direction.

[0012] Workflow of the present invention:

[0013] When the plug is connected to the socket, the connecting ring (4) is rotated, the connecting threads of the socket housing (1) and the connecting ring (4) are connected, the guide key of the plug housing (2) enters the keyway of the socket housing (1), the anti-loosening spring (5) continues to slide along the "V"-shaped groove on the plug housing (2), and the convex rib on the anti-loosening spring (5) enters the "V"-shaped groove on the plug housing to prevent the connecting ring (4) from continuing to rotate. Figure 2As shown. When the force is increased to rotate the connecting ring (4) clockwise, that is, when the connection between the plug and the socket is achieved, the convex peaks on the "V"-shaped groove edge of the plug housing (2) push away the convex ribs on the anti-loosening spring leaf, the spring leaf is deformed, and the connecting ring (4) can continue to rotate. Until the left end face of the plug housing (2) presses against the positioning step of the socket housing (1) and the connection cannot continue, the sealing ring (3) on the plug is compressed, and the compression rate is controlled within a suitable range to ensure the sealing effect and provide the axial force of the threaded connection. Conversely, when the connecting ring (4) is rotated counterclockwise, the convex peaks on the "V"-shaped groove edge of the plug housing (2) push away the convex ribs on the anti-loosening spring leaf, the spring leaf is deformed, and the connecting ring (4) can continue to rotate. Due to the asymmetric balanced torque design of the anti-loosening spring leaf (5), a larger torque is required to rotate the connecting ring (4) counterclockwise. Under vibration and impact mechanical environment conditions, due to the axial force provided by the sealing ring (3), the connecting thread always maintains tight meshing and provides a certain friction force, and the anti-loosening spring provides a large loosening torque to prevent the connecting ring from loosening, thereby ensuring the anti-loosening effect of the mechanism.

Claims

1. A micro anti-loosening structure, comprising a socket housing, a plug housing, a connecting ring, an anti-loosening spring, a rivet, and a retaining spring. Its characteristics are: A "V"-shaped groove is designed on the plug housing, and an anti-loosening spring is installed in the connecting ring groove.

2. The micro-circular anti-loosening structure according to claim 1 is characterized in that: The connecting ring is equipped with an anti-loosening spring, and the anti-loosening spring can rotate together with the connecting ring.

3. The micro-circular anti-loosening structure according to claim 1 is characterized in that: The anti-loosening spring is designed with convex ribs.

4. The micro-circular anti-loosening structure according to claim 1 is characterized in that: After connection, the convex rib on the anti-loosening spring can enter the "V"-shaped groove on the plug housing and prevent the connecting ring from rotating further.

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