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Thread rotation stopping mechanism of rotary mechanism

A technology of rotating mechanism and screw thread, which is applied in the field of machinery, can solve the problems that the rotation at any angle cannot be realized, and achieve the effect of reliable anti-rotation force, simple structure and convenient installation

Active Publication Date: 2009-10-14
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the rotation at any angle or continuous rotation cannot be achieved when the structural size is limited, the present invention provides a rotation mechanism that can achieve any angle or continuous rotation of the rotation mechanism without end surface friction or end surface tooth engagement. Thread stop mechanism for swivel mechanism

Method used

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  • Thread rotation stopping mechanism of rotary mechanism
  • Thread rotation stopping mechanism of rotary mechanism
  • Thread rotation stopping mechanism of rotary mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] see figure 1 with figure 2 The anti-rotation mechanism of the screw thread of the rotating mechanism includes two locking bolts 3 with two sections of the same thread, and also includes two fixed nuts 1 and two moving nuts 2, and the fixed nuts 1 and the moving nuts 2 are respectively locked with the locking bolts. The front thread of the bolt 3 cooperates with the rear thread; the pitch of the front thread of the locking bolt 3 is greater than the pitch of the rear thread.

[0029] In use, the two fixing nuts 1 are respectively fixedly installed on both sides of the rotating structural member 4 .

[0030] Depend on figure 1 It can be seen that the end surfaces of the moving nut 2 and the fixed nut 1 are separated, at this time, the rotating structural member 4 and the two moving nuts 2 can freely rotate in the axial direction, that is, the rotating structural member 4 can rotate to any angle. After the angle is adjusted, lock the two locking bolts 3 respectively. B...

Embodiment 2

[0032] Positioning blocks are respectively connected to the periphery of two moving nuts 2, and the positioning blocks are bent towards the fixed nut 1 side, see Figure 4 . The pitch of the front thread of the locking bolt 3 is 0.6 mm, and the pitch of the rear thread is 0.5 mm; both the front thread and the rear thread of the locking bolt are fine threads.

[0033] Other structures are with embodiment 1.

[0034] When in use, it is installed on the vehicle-mounted infrared night vision device. In the vehicle-mounted infrared night vision device, the product is composed of two main components: one is the system host 7, which includes an infrared CCD camera 8, an infrared light source 9 and other telecommunications and structural auxiliary components; the other is a rotating structural part 4 that fixes the system host , the rotating structural member 4 has a glue-backed bonding surface 10, and the entire vehicle-mounted infrared night vision device is fixed on the front win...

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Abstract

The invention relates to a thread rotation stopping mechanism of a rotary mechanism, which solves the problem that the supply of rotation stopping force of rotation or continuous rotation at any angle can not be realized due to the limit of the structure size. The thread rotation stopping mechanism comprises two locking bolts with two sections of threads with the same turning direction, two fixed nuts and two movable nuts. The fixed nuts and the movable nuts are respectively matched with the front threads and the rear threads of the locking bolts; the thread pitch of the front threads of the locking bolts is larger than the thread pitch of the rear threads; and when in use, the two fixed nuts are fixedly connected with a rotary structural component respectively. The thread rotation stopping mechanism converts the rotation stopping force into a shearing force of the threads; and only the structural strength of the thread is considered, while the contact surface friction coefficient, the contact surface area and enough radial thread locking force which are considered for an end-face friction are not taken in to consideration. The thread rotation stopping mechanism provides reliable rotation stopping force, has simple structure and only relates to bolts and nuts, thus being convenient to manufacture and install.

Description

technical field [0001] The invention belongs to the technical field of machinery and is suitable for structural forms in which the structure of machinery and electronic products can be rotated to adjust the angle and the rotation is stopped by means of threads. Background technique [0002] The traditional rotary adjustable angle mechanism basically uses the following two methods or a combination of the two methods to stop rotation: [0003] Method 1. The thread provides axial pressing force, and the rotating mechanism achieves stop rotation through end surface friction. [0004] Method 2. The anti-rotation is achieved through the meshing of the end face teeth, and the anti-rotation force is realized by the structural strength of the teeth. [0005] The anti-rotation force (end surface friction force) provided by method 1 is determined by three factors: thread axial compression force, contact surface friction coefficient, and contact area. In a certain structure, the frict...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16M11/06B60R11/02
Inventor 杨柳彬廖颖陈新发
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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