Threaded connection mechanism convenient to position

Abstract

The utility model discloses a threaded connection mechanism convenient to position, which comprises a rotating piece, a moving piece and a guide piece, the rotating piece is rotatably arranged on the guide piece, the rotating piece is in threaded connection with the moving piece, the guide piece is provided with a guide hole for accommodating the moving piece to move, the moving piece is provided with a first sliding part, and the inner wall of the guide hole is provided with a second sliding part. The first sliding parts and the second sliding parts are matched for rotation stopping and positioning, and at least one of the first sliding parts and the second sliding parts is arranged in the circumferential direction of the guide hole. According to the threaded connection mechanism convenient to position, the influence of the initial position change of the threaded connection structure on the relative angle position between the rotating piece and the guiding piece can be eliminated, and the rotating piece and the guiding piece can be conveniently positioned.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of screw thread cooperation structure, especially screw thread connection mechanism convenient for positioning. BACKGROUND

[0002] Screw thread cooperation is a connecting mode that can change the relative position of two objects.

[0003] Commonly, one object can be driven to move by rotating another object through screw thread cooperation.

[0004] Specifically, the screw thread connection mechanism can include a rotating member, a moving member and a guide member, the rotating member is threadedly connected with the moving member, and the guide member is cooperated with the moving member through a rotation-stopping structure to guide the moving direction of the moving member. The rotation starting angle position of the rotating member is positioned by the starting position of the threadedly connected structure.

[0005] However, due to the randomness of thread forming, when the rotation-stopping structure of the guide member and the moving member is cooperated, the angle position of the rotating member relative to the guide member is random when the rotating member is located at the rotation starting angle position, which cannot be positioned, and it is difficult to control the angle position of the rotating member relative to the guide member. In order to position the starting position of the threadedly connected structure, the positioning of the thread starting point on the mold is required, which increases the cost of the mold and increases the complexity of the mold. SUMMARY

[0006] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides a screw thread connection mechanism convenient for positioning, which can eliminate the influence of the change of the starting position of the threadedly connected structure on the relative angle position between the rotating member and the guide member, and facilitate the positioning of the rotating member and the guide member.

[0007] The screw thread connection mechanism convenient for positioning according to the utility model embodiment comprises a rotating member, a moving member and a guide member, the rotating member is rotatably arranged on the guide member, the rotating member is threadedly connected with the moving member, the guide member has a guide hole for accommodating the movement of the moving member, the moving member has a first sliding part, the inner wall of the guide hole has a second sliding part, the first sliding part and the second sliding part are cooperated to stop rotation and position, and at least one of the first sliding part and the second sliding part is provided with a plurality of sliding parts and arranged along the circumferential direction of the guide hole.

[0008] The screw thread connection mechanism convenient for positioning according to the utility model embodiment has at least the following beneficial effects:

[0009] 1.The utility model discloses a first sliding part is arranged at the moving part, the inner wall of guide hole sets second sliding part, and the first sliding part and the second sliding part cooperate and stop rotating and position, and at least one of the first sliding part and the second sliding part is provided with a plurality of and is arranged along the circumferential direction of guide hole, can understand, through making at least one of the first sliding part and the second sliding part be provided with a plurality of and be arranged along the circumferential direction of guide hole, no matter how the structure starting position of the threaded connection of rotating part and moving part changes, when rotating part is located at the rotating starting angle position, the first sliding part of moving part can match with the second sliding part under any assembly angle, thereby, eliminate the influence of the structure starting position change of threaded connection on the relative angle position between rotating part and guide piece, and the positioning of rotating part and guide piece is convenient.

[0010] 2.The utility model discloses a first sliding part and second sliding part cooperate and form mechanical type stop rotating structure, compared with traditional plane guide mode, the guide precision and anti -twist ability of guide piece are improved significantly.

[0011] 3.The utility model discloses the cooperation and positioning of first sliding part and second sliding part, and the structure starting position positioning of threaded connection is exempted from, under the condition of not increasing the mould expense and complexity, through the design on structure, guarantee the consistency of product assembly position.

[0012] According to some embodiments of the utility model, the included angle of the two adjacent first sliding parts along the circumferential direction of the guide hole is 5±0.5 degrees, and / or the included angle of the two adjacent second sliding parts along the circumferential direction of the guide hole is 5±0.5 degrees.

[0013] Beneficially, the utility model discloses that the included angle of the two adjacent first sliding parts along the circumferential direction of the guide hole is 5±0.5 degrees, and / or the included angle of the two adjacent second sliding parts along the circumferential direction of the guide hole is 5±0.5 degrees, so that the angle positioning deviation of the rotating part and the guide piece can be controlled within 5±0.5 degrees, and further, the positioning precision of the rotating part and the guide piece can be ensured.

[0014] According to some embodiments of the utility model, the first sliding part and the second sliding part are provided with a plurality of, a plurality of the first sliding parts are arranged along the circumferential direction of the guide hole, and a plurality of the second sliding parts are arranged along the circumferential direction of the guide hole.

[0015] Beneficially, the utility model discloses that the contact stress is dispersed by the cooperation structure of a plurality of first sliding parts and a plurality of second sliding parts between the moving part and the guide piece, the service life is prolonged, and the system rigidity is enhanced.

[0016] According to some embodiments of the utility model, the first sliding part is provided as a convex tooth, and the second sliding part is provided as a tooth groove.

[0017] Beneficially, the first sliding part is provided as a convex tooth, and the second sliding part is provided as a tooth groove, so that the convex tooth and the tooth groove are engaged to improve the effective contact area, and further improve the cooperation stability of the first sliding part and the second sliding part.

[0018] According to some embodiments of the utility model, the tooth groove is provided with a limiting wall away from one end of the rotating piece, and the limiting wall and the convex tooth abut to limit the maximum moving position of the moving piece in the direction away from the rotating piece.

[0019] Beneficially, the limiting wall is arranged at one end of the tooth groove away from the rotating piece, and the limiting wall and the convex tooth abut to limit the maximum moving position of the moving piece in the direction away from the rotating piece. It can be understood that the limiting wall forms a mechanical hard stop, completely eliminates the risk of exceeding the maximum stroke, improves the system safety, and at the same time, the abutting type limiting avoids the position deviation caused by elastic deformation, and ensures the repeat positioning accuracy of the limit position.

[0020] According to some embodiments of the utility model, the shaft core of the guide hole is coaxially arranged with the rotating axis of the rotating piece.

[0021] Beneficially, the shaft core of the guide hole is coaxially arranged with the rotating axis of the rotating piece, which can be understood as that the coaxial arrangement of the shaft core of the guide hole and the rotating axis of the rotating piece eliminates the eccentric error, ensures the uniform stress of the threaded pair, and prolongs the service life.

[0022] According to some embodiments of the utility model, the rotating piece is provided with a first positioning part, the guide piece is provided with a starting positioning part, and the first positioning part and the starting positioning part cooperate to position the starting rotating angle position of the rotating piece relative to the guide piece.

[0023] Beneficially, the first positioning part and the starting positioning part cooperate to form the starting angle position reference of the rotating piece on the guide piece, which is convenient for aligning the rotating piece with the guide piece when the moving piece and the guide piece are installed, and is beneficial to the initial position confirmation during manual assembly.

[0024] According to some embodiments of the utility model, the guide piece is further provided with a terminal positioning part, and the terminal positioning part and the first positioning part abut to limit the terminal rotating angle position of the rotating piece relative to the guide piece.

[0025] Beneficially, the utility model discloses a termination positioning part is further arranged on the guide piece, and the termination positioning part abuts with the first positioning part to limit the termination rotation angle position of the rotating piece relative to the guide piece, and it can be understood that the limitation of the termination rotation angle position of the rotating piece can prevent excessive rotation from damaging the screw pair, and at the same time, the effective working stroke is limited, the transmission efficiency is optimized, in addition, the starting angle position of the starting positioning part and the first positioning part and the starting angle position of the termination positioning part and the first positioning part make the rotation angle range of the rotating piece between the starting positioning part and the termination positioning part, avoid the energy waste and time loss caused by invalid idling.

[0026] According to some embodiments of the utility model, the guide piece includes a mounting plate and a convex ring, the guide hole penetrates the mounting plate and the convex ring, and the top edge of the convex ring is used to support the edge of the rotating piece.

[0027] Beneficially, the utility model discloses a termination positioning part is further arranged on the guide piece, and the termination positioning part abuts with the first positioning part to limit the termination rotation angle position of the rotating piece relative to the guide piece, and it can be understood that the limitation of the termination rotation angle position of the rotating piece can prevent excessive rotation from damaging the screw pair, and at the same time, the effective working stroke is limited, the transmission efficiency is optimized, in addition, the starting angle position of the starting positioning part and the first positioning part and the starting angle position of the termination positioning part and the first positioning part make the rotation angle range of the rotating piece between the starting positioning part and the termination positioning part, avoid the energy waste and time loss caused by invalid idling.

[0028] According to some embodiments of the utility model, the first positioning part is arranged on the edge outside of the rotating piece, and the starting positioning part and the termination positioning part are arranged on the top edge of the convex ring.

[0029] Beneficially, the utility model discloses a termination positioning part is further arranged on the guide piece, and the termination positioning part abuts with the first positioning part to limit the termination rotation angle position of the rotating piece relative to the guide piece, and it can be understood that the limitation of the termination rotation angle position of the rotating piece can prevent excessive rotation from damaging the screw pair, and at the same time, the effective working stroke is limited, the transmission efficiency is optimized, in addition, the starting angle position of the starting positioning part and the first positioning part and the starting angle position of the termination positioning part and the first positioning part make the rotation angle range of the rotating piece between the starting positioning part and the termination positioning part, avoid the energy waste and time loss caused by invalid idling.

[0030] According to some embodiments of the utility model, one of the rotating piece and the moving piece is provided with a screw rod part, the other of the rotating piece and the moving piece is provided with a screw sleeve part, and the screw rod part and the screw sleeve part are threadedly connected.

[0031] Beneficially, the utility model discloses a termination positioning part is further arranged on the guide piece, and the termination positioning part abuts with the first positioning part to limit the termination rotation angle position of the rotating piece relative to the guide piece, and it can be understood that the limitation of the termination rotation angle position of the rotating piece can prevent excessive rotation from damaging the screw pair, and at the same time, the effective working stroke is limited, the transmission efficiency is optimized, in addition, the starting angle position of the starting positioning part and the first positioning part and the starting angle position of the termination positioning part and the first positioning part make the rotation angle range of the rotating piece between the starting positioning part and the termination positioning part, avoid the energy waste and time loss caused by invalid idling.

[0032] According to some embodiments of the utility model, the rotating part is provided with a rotating cap, and a strip-shaped groove is arranged on the side wall of the rotating cap.

[0033] Beneficially, the rotating cap is arranged on the rotating part, and the strip-shaped groove is arranged on the side wall of the rotating cap, so that the strip-shaped groove can form a rough surface on the side wall of the rotating cap, which is beneficial to increase friction, and thus, the effect of easily rotating the rotating part is achieved.

[0034] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical scheme of the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0036] Figure 1 It is the structural schematic diagram of the thread connection mechanism for the convenient positioning of the embodiment of the utility model;

[0037] Figure 2 It is Figure 1 The cross-sectional view shown is shown;

[0038] Figure 3 It is Figure 1 The parts explosion diagram shown is shown;

[0039] Figure 4 It is Figure 3 The enlarged view shown at A is shown.

[0040] Reference signs: 100-rotating part, 110-moving part, 120-guiding part, 130-guiding hole, 140-first sliding part, 150-second sliding part, 160-limiting wall, 170-first positioning part, 180-starting positioning part, 190-terminating positioning part, 200-mounting plate, 210-convex ring, 220-rotating cap, 230-strip-shaped groove. DETAILED DESCRIPTION

[0041] The embodiments of the utility model will be described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as the limitation of the utility model.

[0042] In the description of the utility model, need understanding, the direction description, for example, the direction or positional relation of indication such as upper, lower, front, back, left, right is based on the direction or positional relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, a particular orientation configuration and operation, therefore can not be understood as the limitation of the utility model.

[0043] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number.If the first and the second are described, this is only for the purpose of distinguishing technical features, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.

[0044] In the description of the utility model, it should be pointed out that, unless otherwise expressly provided and limited, the term "installation, connection and connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements.The above-mentioned terms in the utility model can be understood according to the specific meaning of the above-mentioned terms in the utility model.

[0045] The screw connection mechanism convenient for positioning according to the embodiments of the utility model will be described below with reference to the drawings.

[0046] The utility model aims at providing the embodiments of screw connection mechanism convenient for positioning.

[0047] Referring to Figure 1 , Figure 2 And Figure 3 , in the embodiments, the screw connection mechanism convenient for positioning mainly includes rotating part 100, moving part 110 and guide part 120.

[0048] Specifically, rotating part 100 is rotationally arranged on guide part 120, rotating part 100 is threadedly connected with moving part 110, guide part 120 has guide hole 130 for accommodating the movement of moving part 110, moving part 110 has first sliding part 140, the inner wall of guide hole 130 has second sliding part 150, first sliding part 140 and second sliding part 150 cooperate to stop rotating and position, at least one of first sliding part 140 and second sliding part 150 is provided with a plurality of and is arranged along the circumference of guide hole 130.

[0049] The first sliding part 140 is arranged on the moving part 110, the inner wall of the guide hole 130 is arranged with the second sliding part 150, the first sliding part 140 and the second sliding part 150 are matched to stop rotation and position, at least one of the first sliding part 140 and the second sliding part 150 is arranged with a plurality of and arranged along the circumference of the guide hole 130, it can be understood that, by arranging at least one of the first sliding part 140 and the second sliding part 150 with a plurality of and arranging along the circumference of the guide hole 130, no matter how the structure starting position of the threaded connection between the rotating part 100 and the moving part 110 changes, when the rotating part 100 is located at the rotating starting angle position, the first sliding part 140 of the moving part 110 can match the second sliding part 150 at any assembly angle, thereby eliminating the influence of the change of the threaded starting position on the relative angle position between the rotating part 100 and the guide part 120, and facilitating the positioning of the rotating part 100 and the guide part 120.

[0050] In addition, the first sliding part 140 and the second sliding part 150 are matched to form a mechanical rotation-stopping structure, compared with the traditional plane guiding mode, the guiding accuracy and the anti-torsion ability of the guide part 120 are significantly improved.

[0051] Furthermore, the first sliding part 140 and the second sliding part 150 are matched to position, the structure starting position of the threaded connection is eliminated, the consistency of the product assembly position is ensured through the structural design without increasing the mold cost and the complexity.

[0052] In some specific embodiments, one of the rotating part 100 and the moving part 110 is arranged with a screw rod part, and the other of the rotating part 100 and the moving part 110 is arranged with a screw sleeve part, the screw rod part and the screw sleeve part are threaded, thereby the cooperation of the screw rod part and the screw sleeve part is conducive to ensuring the threaded connection depth between the rotating part 100 and the moving part 110.

[0053] Specifically, the screw rod part is arranged on the moving part 110, and the screw sleeve part is arranged on the rotating part 100.

[0054] In some specific embodiments, one end of the screw rod part is arranged with a first slot, thereby the material of the screw rod part is reduced, and the weight of the screw rod part is reduced.

[0055] In some specific embodiments, the rotating part 100 is arranged with a rotating cap 220, and the side wall of the rotating cap 220 is arranged with a strip-shaped groove 230, thereby the side wall of the rotating cap 220 forms a rough surface by using the strip-shaped groove 230, the friction is increased, and the rotating cap 220 is easily screwed.

[0056] Specifically, in order to further improve the roughness of the side wall of the cap 220, so that the cap 220 is easier to screw, the strip-shaped groove 230 is provided with a plurality of strip-shaped grooves 230 arranged along the circumference of the cap 220.

[0057] In some specific embodiments, the included angle between two adjacent first sliding parts 140 along the circumference of the guide hole 130 is 5±0.5 degrees, and / or the included angle between two adjacent second sliding parts 150 along the circumference of the guide hole 130 is 5±0.5 degrees, so that the angle positioning offset between the rotating part 100 and the guide part 120 can be controlled within 5±0.5 degrees, thereby facilitating the positioning accuracy of the rotating part 100 and the guide part 120.

[0058] In some specific embodiments, the first sliding part 140 and the second sliding part 150 are both provided with a plurality of first sliding parts 140 arranged along the circumference of the guide hole 130, and a plurality of second sliding parts 150 arranged along the circumference of the guide hole 130.

[0059] It can be understood that the present embodiment disperses the contact stress by using the cooperation structure of the plurality of first sliding parts 140 and the plurality of second sliding parts 150 between the moving part 110 and the guide part 120, prolongs the service life, and at the same time enhances the system rigidity.

[0060] In some specific embodiments, the first sliding part 140 is provided as a convex tooth, and the second sliding part 150 is provided as a tooth groove, so that the engagement of the convex tooth and the tooth groove is beneficial to improve the effective contact area, and thereby improve the cooperation stability of the first sliding part and the second sliding part.

[0061] Referring to Figure 4 , further, the tooth groove has a limiting wall 160 away from the rotating part 100, and the limiting wall 160 abuts against the convex tooth to limit the maximum moving position of the moving part 110 in the direction away from the rotating part 100.

[0062] It can be understood that the limiting wall 160 forms a mechanical hard stop, completely eliminates the risk of exceeding the maximum stroke, improves the system safety, and at the same time, the abutting limiting avoids the position deviation caused by elastic deformation, and ensures the repeat positioning accuracy of the limit position.

[0063] In some specific embodiments, the axis of the guide hole 130 is coaxially arranged with the rotation axis of the rotating part 100.

[0064] It can be understood that the coaxial arrangement of the axis of the guide hole 130 and the rotation axis of the rotating part 100 eliminates eccentric error, ensures the uniform stress of the threaded pair, i.e. the threaded connection structure, and prolongs the service life.

[0065] In some specific embodiments, the rotating member 100 is provided with a first positioning portion 170, the guide member 120 is provided with a starting positioning portion 180, and the first positioning portion 170 cooperates with the starting positioning portion 180 to position the starting rotating angle position of the rotating member 100 relative to the guide member 120.

[0066] It can be understood that the cooperation of the first positioning portion 170 and the starting positioning portion 180 forms the starting angle position reference of the rotating member 100 on the guide member 120, which facilitates the alignment of the rotating member 100 with the guide member 120 when the moving member 110 is installed on the guide member 120, and is beneficial for the initial position confirmation during manual assembly.

[0067] Further, the guide member 120 is further provided with a terminal positioning portion 190, and the terminal positioning portion 190 abuts against the first positioning portion 170 to limit the terminal rotating angle position of the rotating member 100 relative to the guide member 120.

[0068] It can be understood that the limitation of the terminal rotating angle position of the rotating member 100 can prevent damage to the threaded pair due to excessive rotation, and can also limit the effective working stroke to optimize the transmission efficiency. In addition, the starting angle position positioning of the starting positioning portion 180 and the first positioning portion 170 and the starting angle position positioning of the terminal positioning portion 190 and the first positioning portion 170 form a rotating angle range of the rotating member 100 between the starting positioning portion 180 and the terminal positioning portion 190, which avoids energy waste and time loss caused by invalid idling.

[0069] In some specific embodiments, the guide member 120 includes a mounting plate 200 and a convex ring 210, and the guide hole 130 penetrates through the mounting plate 200 and the convex ring 210, and the top edge of the convex ring 210 is used to support the edge of the rotating member 100.

[0070] It can be understood that, on the one hand, the convex ring 210 top edge support structure forms an axial positioning reference for the rotating member 100, which improves the rotating stability of the rotating member 100, and on the other hand, the convex ring 210 forms a ring-shaped reinforcing rib of the guide member 120, which is beneficial to improve the bending stiffness of the guide member 120.

[0071] Further, the first positioning portion 170 is arranged outside the edge of the rotating member 100, and the starting positioning portion 180 and the terminal positioning portion 190 are arranged on the top edge of the convex ring 210.

[0072] It can be understood that, on the one hand, arranging the first positioning portion 170 outside the edge of the rotating member 100 facilitates easier observation of the position of the first positioning portion 170 during assembly, which is beneficial for installation and positioning, and on the other hand, arranging the starting positioning portion 180 and the terminal positioning portion 190 on the top edge of the convex ring 210 enables the positions of the starting positioning portion 180 and the terminal positioning portion 190 to be arranged on the movement path of the first positioning portion 170.

[0073] In some specific embodiments, the tooth grooves are arranged on the inner side wall of the convex ring 210, and a plurality of tooth grooves are arranged equidistantly along the inner side wall of the convex ring 210, so that the part structure of the mounting plate 200 can form the limiting wall 160 of the tooth groove.

[0074] The positioning screw connection mechanism of the embodiment is convenient for assembly, and the specific assembly steps are as follows:

[0075] First, the rotating member 100 and the moving member 110 are assembled together by screwing.

[0076] Then, the rotating member 100 and the moving member 110 that are screwed together are placed in the guide member 120, the first positioning part 170 of the rotating member 100 is aligned with the starting positioning part 180 of the guide member 120, the convex teeth are inserted into the tooth grooves, and the assembly is completed.

[0077] After assembly, the cooperation of the convex teeth and the tooth grooves ensures that the moving member 110 can only move axially when the rotating member 100 rotates.

[0078] In the description of the present specification, the description of the terms “one embodiment, some embodiments, illustrative embodiments, examples, specific examples, or some examples” means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials, or characteristics can be combined in any one or more embodiments or examples as appropriate.

[0079] The terms “first, second, third, fourth” and the like (if any) in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0080] It should also be noted that in the description of the present specification, the relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or sequence between the entities or operations.

[0081] Furthermore, the term "comprising" and "including" and any of their derivatives, are intended to be taken in their broadest sense as meaning that they include more than the recited items, for example, a process, method, system, product or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units which are recited, but can include additional steps or units that are not expressly listed or inherent to such process, method, product or apparatus.

[0082] Also, the terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without limitation, an element preceded by "comprises a" does not, without more limitations, foreclose the existence of additional identical elements in the process, method, article, or apparatus that comprises the recited element.

[0083] The above describes the embodiments of the present application in detail in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present application.

Claims

1. A threaded connection mechanism for easy positioning, characterized in that, The device includes a rotating component (100), a moving component (110), and a guide component (120). The rotating component (100) is rotatably mounted on the guide component (120). The rotating component (100) is threadedly connected to the moving component (110). The guide component (120) has a guide hole (130) for accommodating the movement of the moving component (110). The moving component (110) has a first sliding portion (140). The inner wall of the guide hole (130) has a second sliding portion (150). The first sliding portion (140) and the second sliding portion (150) cooperate to prevent rotation and position the device. At least one of the first sliding portion (140) and the second sliding portion (150) is provided in multiples and arranged circumferentially along the guide hole (130).

2. The threaded connection mechanism for easy positioning according to claim 1, characterized in that, The included angle between two adjacent first sliding parts (140) along the circumference of the guide hole (130) is 5±0.5 degrees, and / or the included angle between two adjacent second sliding parts (150) along the circumference of the guide hole (130) is 5±0.5 degrees.

3. The threaded connection mechanism for easy positioning according to claim 1, characterized in that, The first sliding part (140) and the second sliding part (150) are each provided in multiples. The multiple first sliding parts (140) are arranged circumferentially along the guide hole (130), and the multiple second sliding parts (150) are arranged circumferentially along the guide hole (130).

4. The threaded connection mechanism for easy positioning according to claim 1, characterized in that, The first sliding part (140) is configured as a tooth, and the second sliding part (150) is configured as a tooth groove.

5. The threaded connection mechanism for easy positioning according to claim 4, characterized in that, The tooth groove has a limiting wall (160) at one end away from the rotating member (100), the limiting wall (160) abutting against the tooth to limit the maximum movement position of the moving member (110) in a direction away from the rotating member (100).

6. The threaded connection mechanism for easy positioning according to claim 1, characterized in that, The rotating member (100) is provided with a first positioning part (170), and the guide member (120) is provided with a starting positioning part (180). The first positioning part (170) and the starting positioning part (180) cooperate to position the starting rotation angle position of the rotating member (100) relative to the guide member (120).

7. The threaded connection mechanism for easy positioning according to claim 6, characterized in that, The guide member (120) is further provided with a termination positioning part (190), which abuts against the first positioning part (170) to limit the termination rotation angle position of the rotating member (100) relative to the guide member (120).

8. The threaded connection mechanism for easy positioning according to claim 7, characterized in that, The guide member (120) includes a mounting plate (200) and a convex ring (210), the guide hole (130) passes through the mounting plate (200) and the convex ring (210), and the top edge of the convex ring (210) is used to support the edge of the rotating member (100).

9. The threaded connection mechanism for easy positioning according to claim 8, characterized in that, The first positioning part (170) is disposed on the outer side of the edge of the rotating member (100), and the starting positioning part (180) and the ending positioning part (190) are disposed on the top edge of the convex ring (210).

10. The threaded connection mechanism for easy positioning according to claim 1, characterized in that, The rotating component (100) is provided with a rotating cap (220), and the side wall of the rotating cap (220) is provided with a strip groove (230).

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