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CN-224214534-U - Multi-head thread orientation structure

CN224214534UCN 224214534 UCN224214534 UCN 224214534UCN-224214534-U

Abstract

The utility model discloses a multi-head thread orientation structure which can determine the unique relative direction between two parts after screwing, and comprises a first thread arranged on a first part and a second thread arranged on a second part and matched with the first thread, wherein the first thread and the second thread are correspondingly multi-thread threads, the orientation structure comprises a first orientation part arranged on the first part and a second orientation part correspondingly arranged on the second part, when the first orientation part and the second orientation part are in directional butt joint, the first thread and the second thread are directionally screwed in, and the first part and the second part are directionally screwed in.

Inventors

  • XU ZHAOZHAN
  • Xie Zhouhui
  • FANG YOUCHUN
  • YANG ZHENGJUN

Assignees

  • 浙江哈尔斯真空器皿股份有限公司

Dates

Publication Date
20260508
Application Date
20250520

Claims (7)

  1. 1. The multi-head thread orientation structure comprises a first thread (11) arranged on a first component (1) and a second thread (21) matched with the first thread (11) and arranged on a second component (2), wherein the first thread (11) and the second thread (21) are correspondingly multi-thread threads, and the multi-thread orientation structure is characterized in that: An orientation structure comprising a first orientation portion (12) provided on the first member (1), and a second orientation portion (22) provided on the second member (2) in correspondence; When the first orientation part (12) and the second orientation part (22) are in orientation butt joint, the first thread (11) and the second thread (21) are in orientation screwing, and the first component (1) and the second component (2) are in orientation screwing.
  2. 2. A multi-start thread orientation structure according to claim 1, wherein: the first orientation part (12) is arranged as a bulge; The lower end of the protrusion is not higher than the thread starting position of the first thread (11) in the axial direction; The second orientation part (22) is provided with an orientation notch (221) for the first orientation part (12) to pass through and an avoidance space for the bulge of the first orientation part (12) to move; The avoidance space is communicated with the directional notch (221).
  3. 3. A multi-start thread orientation structure according to claim 2, wherein: the second thread (21) is provided as a thread groove; The relief space is provided as a directional thread groove (222) that matches the projection of the first directional part (12).
  4. 4. A multi-start thread orientation structure according to claim 3, wherein: The first screw thread (11) is a screw thread section, and each section of the first screw thread (11) is not overlapped in the axial direction; the starting position and the ending position of the adjacent two sections of first threads (11) are circumferentially spaced; The protrusions of the first orientation part (12) are arranged within the space.
  5. 5. A multi-start thread orientation structure according to any one of claims 2-4, wherein: The bulge of the first orientation part (12) is arranged as a thread section, the thread starting position of the bulge is not higher than that of the first thread (11), and the bulge is identical to the thread lead angle and the thread height of the first thread (11).
  6. 6. A multi-start thread orientation structure according to claim 4, wherein: The thread starting position of the second thread (21) is communicated with a thread notch (211) for the first thread (11) to pass through.
  7. 7. A multi-start thread orientation structure according to claim 6, wherein: One end of the thread notch (211) far away from the second thread (21) is a thread stop part (212); one end of the orientation notch (221) far away from the orientation thread groove (222) is an orientation stop part (223).

Description

Multi-head thread orientation structure Technical Field The utility model belongs to the technical field of threaded connection structures, and particularly relates to a multi-head threaded orientation structure. Background The threaded connection structure is widely applied and is usually provided with a single-line thread structure and a multi-line thread structure, wherein the relative direction of the two parts is fixed after the two parts are screwed together, but the relative direction of the two parts is uncertain after the two parts are screwed together under the multi-line thread structure, for example, the two spiral lines of the two spiral lines are 180 degrees out of phase on the circumference (namely, the starting points are separated by half a circle), after the two spiral lines are screwed together, the observation points can be in the correct required direction or 180 degrees out of phase with the required direction, and therefore, the multi-line thread cannot determine the relative direction of the two parts after the two parts are screwed together, and when the multi-line thread structure is used on a product which needs to be oriented while the advantage of the multi-line thread is needed. Disclosure of Invention The utility model aims to provide a multi-head thread orientation structure which can determine the unique relative direction between two parts after screwing. In order to achieve the above purpose, the present utility model adopts the following technical scheme. The multi-head thread orientation structure comprises a first thread arranged on a first component and a second thread arranged on a second component and matched with the first thread, wherein the first thread and the second thread are multi-thread threads correspondingly, the orientation structure comprises a first orientation part arranged on the first component and a second orientation part correspondingly arranged on the second component, when the first orientation part and the second orientation part are in orientation butt joint, the first thread and the second thread are oriented to be screwed in, and the first component and the second component are oriented to be screwed in. By means of the technical scheme, the first thread and the second thread are correspondingly double-thread threads, the lead is large, screwing can be achieved only by screwing at a small angle in the screwing process of the first component and the second component, the first thread and the second thread can be meshed and screwed only after the first directional part and the second directional part are in directional butt joint through the directional structure, therefore the meshing entering direction of the first component and the second component can be determined, the opposite direction can be kept all the time after screwing, the situation that 180 degrees of rotation can not be randomly conducted like the double-thread threads is avoided, the problem of double-thread threads in the prior art is solved, and the advantage of large lead of the double-thread is maintained. Preferably, the first orientation part is arranged as a bulge, the lower end of the bulge is not higher than the thread starting position of the first thread in the axial direction, the second orientation part is arranged as an orientation notch for the first orientation part to pass through and an avoidance space for the bulge of the first orientation part to move, and the avoidance space is communicated with the orientation notch. By adopting the technical scheme, through setting up the cooperation that first directional portion and second directional portion set up to protruding and directional breach respectively, the direction of screw in that determines that can be fine, through setting up the space of dodging simultaneously, can provide protruding activity space when the screw in is screwed out, avoid causing the interference with the second screw thread. Preferably, the second screw is provided as a screw groove, and the escape space is provided as a directional screw groove matching with the protrusion of the first directional part. By adopting the technical scheme, the first thread and the first directional part can be definitely limited and screwed in by adopting the design of the spiral groove, the virtual position between the thread intervals is avoided, the design of the spiral groove is more convenient for designing the directional notch to be communicated with the spiral groove, and the first directional part enters the directional notch and then is matched with the spiral groove to enter, so that the guide function is realized. Preferably, the first threads are thread sections, each section of first threads is free from overlapping in the axial direction, the starting position and the ending position of two adjacent sections of first threads are circumferentially provided with intervals, and the protrusions of the first orientation parts are arranged in t