CN114934986A - Screw thread hidden type screw connection structure - Google Patents

Abstract

The invention relates to the technical field of transmission parts, in particular to a thread-hidden type screwing structure which comprises a screw rod and a nut, wherein a spiral first groove is formed in the inner side wall of the nut, a second groove corresponding to the first groove is formed in the outer side wall of the screw rod, an opening of the first groove and an opening of the second groove are attached to form an accommodating groove, and at least one sliding part or at least one rolling part is movably connected into the accommodating groove. The invention aims to provide a thread-hidden type screw connection structure, which hides the threads of a screw and simultaneously realizes the same effect as that of a traditional screw nut through a unique structural design.

Description

Screw thread hidden type screw connection structure

Technical Field

The invention relates to the technical field of transmission parts, in particular to a thread hidden type screwing structure.

Background

At present, a rod body of a cylinder with a spiral groove cut on the outer surface or a cone with a conical spiral groove cut on the outer surface is generally called a screw rod, meanwhile, a part of the cylinder with the spiral groove cut on the inner surface or the cone with the conical spiral groove cut on the inner surface is called a nut, and the screw rod and the nut are matched to form a threaded connection structure for converting rotary motion into linear motion. Generally, the screw thread of the screw is exposed, and it is difficult to avoid the damage to the screw thread from the outside and the influence.

Disclosure of Invention

In order to overcome the defects and shortcomings in the prior art, the invention aims to provide a thread hiding type screw connection structure, which hides the threads of a screw and achieves the same effect as that of a traditional screw nut through a unique structural design.

The invention is realized by the following technical scheme:

the utility model provides a hidden spiro union structure of screw thread, includes screw rod and nut, the inside wall of nut is equipped with spiral helicine first recess, the lateral wall of screw rod is equipped with the second recess that corresponds with first recess, the groove is established with the opening laminating formation of second recess to the opening of first recess, it has at least one smooth accessory or at least one rolling member to establish inslot swing joint to hold.

And one side of the nut is provided with a mounting hole communicated with the first groove, the rolling piece is a ball, and the aperture of the mounting hole is larger than or equal to the diameter of the rolling piece.

Wherein, the mounting hole is detachably provided with a sealing plug.

Wherein, the diameter of the sliding fittings or the rolling parts is adapted to the aperture of the accommodating groove.

The outer side wall of the nut is provided with anti-slip threads.

Wherein, the nut is arranged at the upper end of the first groove and is provided with a sealing ring.

And a self-adaptive groove for adapting to the circular rolling of the rolling piece is communicated between the starting end of the groove and the terminal.

Wherein, the sliding part is an arc-shaped cylinder structure.

The invention has the beneficial effects that:

the invention relates to a thread hidden type screw connection structure.A spiral first groove is arranged on the inner side wall of a nut, a second groove corresponding to the first groove is arranged on the outer side wall of a screw rod, the first groove and the second groove are matched to form an accommodating groove, and at least one sliding part or at least one rolling part is movably connected in the accommodating groove. Because the screw rod of the invention has no exposed screw thread, the appearance is more beautiful, and simultaneously the screw thread can be protected to a greater extent, and the service life is prolonged.

Drawings

The invention is further illustrated by means of the attached drawings, but the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be obtained on the basis of the following drawings without inventive effort.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is an exploded view of the present invention.

Reference numerals

A nut-100, a first groove-101, a mounting hole-102, a sealing plug-103, a sealing ring-104,

the screw-200, the second groove-201,

a groove-300 and a sliding fitting-301 are accommodated.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

At present, a rod body of a cylinder with a spiral groove cut on the outer surface or a cone with a conical spiral groove cut on the outer surface is generally called a screw rod 200, meanwhile, a part of the cylinder with the spiral groove cut on the inner surface or the cone with the conical spiral groove cut on the inner surface is called a nut 100, and the screw rod 200 and the nut 100 are matched to form a threaded structure for converting rotary motion into linear motion. Generally, the thread of the screw rod 200 is exposed, and it is difficult to avoid the damage to the thread from the outside.

In order to solve the above technical problems, the present embodiment discloses a thread-concealed screwing structure, which is shown in fig. 1 to 3, and includes a screw rod 200 and a nut 100, wherein the outer side wall of the nut 100 is provided with anti-slip threads to increase the operation hand feeling of the nut 100; the inside wall of nut 100 is equipped with spiral helicine first recess 101, the lateral wall of screw rod 200 is equipped with the second recess 201 that corresponds with first recess 101, the groove 300 is established with the opening laminating formation of second recess 201 to the opening of first recess 101, swing joint has at least one sliding part or at least one rolling member 301 in the groove 300 is established in the appearance.

Specifically, the screw thread hidden type screw connection structure of the invention is characterized in that a spiral first groove 101 is arranged on the inner side wall of the nut 100, a second groove 201 corresponding to the first groove 101 is arranged on the outer side wall of the screw rod 200, the first groove 101 and the second groove 201 are matched to form an accommodating groove 300, at the same time, at least one sliding part or at least one rolling part 301 is movably connected in the accommodating groove 300, when the nut 100 is screwed, the sliding fitting or rolling member 301 abuts against the upper end of the second groove 201 or the lower end of the second groove 201, respectively, because the sliding part or the rolling part 301 can not move farther along the second groove 201, and meanwhile, the sliding part slides relatively still in the accommodating groove 300 or the rolling part 301 rotates relatively still in the accommodating groove 300, the screw rod 200 moves up and down under the action of the sliding part or the rolling part 301, thereby realizing the same lifting driving effect as the traditional screw rod 200. Because the screw rod 200 of the invention has no exposed screw thread, the appearance is more beautiful, and simultaneously the screw thread can be protected to a greater extent, and the service life is prolonged.

Further, one side of the nut 100 is provided with a mounting hole 102 communicated with the first groove 101, and the diameter of the mounting hole 102 is larger than or equal to the diameter of the rolling member 301. Preferably, the rolling member 301 in this embodiment is a ball, and the ball can roll along the inside of the accommodating groove 300; the sliding part is an arc-shaped cylinder structure which can slide along the inside of the accommodating groove 300; in addition, a sealing plug 103 can be detachably arranged at the mounting hole 102, the ball can enter and exit from the mounting hole 102, the ball is convenient to replace or maintain, and the sealing plug 103 can prevent the sliding part from rolling out of the mounting hole 102; in addition, at the upper end of the first groove 101, the nut 100 is provided with a sealing ring 104, and the sealing degree between the nut 100 and the stud can be increased by the sealing ring 104.

Further, the diameter of the sliding fitting or rolling part 301 is adapted to the aperture of the accommodating groove 300, so that when the nut 100 rotates, the sliding fitting or rolling part 301 is always attached to the inner side of the accommodating groove 300, loosening is avoided, and the stability of the nut 100 and the screw rod 200 in matching is improved.

Furthermore, a self-adaptive groove used for adapting to the rolling member 301 to roll circularly is arranged between the starting end and the terminal of the groove in a communication mode, the depth of the self-adaptive groove adapts to the diameter of the sliding part, the sliding part is enabled to roll continuously in the first groove 101 in compliance with the rotating direction of the screw 200 and the nut 100, friction caused by sliding is reduced, resistance is reduced, and the service life is prolonged.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (8)

1. The utility model provides a hidden spiro union structure of screw thread, includes screw rod and nut, its characterized in that: the inside wall of nut is equipped with spiral helicine first recess, the lateral wall of screw rod is equipped with the second recess that corresponds with first recess, the opening of first recess forms with the opening laminating of second recess and holds and establishes the groove, hold and establish inslot swing joint and have at least one smooth accessory or at least one rolling member.

2. The thread hidden bolt joint structure according to claim 1, wherein: one side of the nut is provided with a mounting hole communicated with the first groove, the rolling element is a ball, and the diameter of the mounting hole is larger than or equal to the diameter of the rolling element.

3. A screw thread hidden type screwing structure according to claim 2, wherein: the mounting hole is detachably provided with a sealing plug.

4. A screw thread hidden type screwing structure according to claim 2, wherein: the diameter of the sliding fittings or the rolling parts is adapted to the aperture of the accommodating groove.

5. The thread-concealed screwing structure according to claim 1, wherein: the outer side wall of the nut is provided with anti-skidding threads.

6. The thread-concealed screwing structure according to claim 1, wherein: and the nut is positioned at the upper end of the first groove and is provided with a sealing ring.

7. The thread-concealed screwing structure according to claim 1, wherein: and a self-adaptive groove for adapting to the circular rolling of the rolling element is communicated between the starting end of the groove and the terminal.

8. The thread-concealed screwing structure according to claim 1, wherein: the sliding fitting part is of an arc-shaped cylinder structure.

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