CN215567230U

CN215567230U - Rotating shaft with limiting damping

Info

Publication number: CN215567230U
Application number: CN202121363165.7U
Authority: CN
Inventors: 周笔文; 凌云; 朱翔; 任康; 陈政; 陈炳先
Original assignee: Gyenno Technologies Co ltd
Current assignee: Gyenno Technologies Co ltd
Priority date: 2021-06-18
Filing date: 2021-06-18
Publication date: 2022-01-18
Anticipated expiration: 2031-06-18

Abstract

The utility model relates to a rotating shaft with limiting damping, which comprises a flip connecting piece, a limiting block, a torsion shaft and a fixing component, wherein one end of the flip connecting piece is provided with a first round hole, and the torsion shaft penetrates through the first round hole to be connected with the fixing component; the torsion shaft is provided with a threaded part, two symmetrical shaft shoulder planes are formed by cutting in the axial direction of the threaded part, the limiting block is provided with a second through hole matched with the threaded part, the threaded part sequentially penetrates through the second through hole and the first round hole to be connected with the fixing assembly, an axial limiting bulge is formed at one end, close to the first round hole, of the limiting block in a protruding mode, and a radial abutting part is formed by the side wall of the first round hole towards the circular bulge; the axial outer cylindrical surfaces of the two axial limiting bulges are in precise clearance fit with the inner side surfaces of the flip ears, when the rotating shaft works and is limited, the circumferential side surfaces of the two axial limiting bulges are respectively extruded and stressed with the circumferential side surfaces of the two radial supporting parts, so that the two pairs of stress surfaces meet a couple relation, and uncontrollable displacement and limiting torque are enhanced when the rotating shaft is limited.

Description

Rotating shaft with limiting damping

Technical Field

The utility model relates to the technical field of rotating shafts, in particular to a rotating shaft with limiting damping.

Background

In the prior art, the mechanical limit damage to the rotating shaft is very large because the counter-torque force applied to the rotating shaft is very large due to the relatively short counter-torque arm of the rotating shaft, and the traditional rotating shaft with the limit damping is limited by space and cost and can only form a dent in the axial direction of the rotating shaft by stamping to form a limit structure; and the stamping structure deflection is little to only the single-point is spacing, so the spacing dynamics of the spacing damping pivot of traditional area is little, can only be used for small-size digital product. Therefore, the structural stability and the application range of the damper rotating shaft are greatly limited, and the required rotating force is often larger for the damper rotating shaft used as the flip cover, and the requirement on the stability of the damper limiting position is higher.

For example, the document with the application number of 201410528362.8 discloses a circumferential limiting structure of a rotating shaft, which achieves the limiting and rotating effects through a positioning pin of the limiting ring of the rotating shaft and a plurality of limiting rings, but a rotating force arm on the rotating shaft only achieves the rotating and limiting effects through the matching of a convex point and a groove of a cylindrical structure, and the problem of fracture caused by overlarge counter torque force during the rotating positioning also exists; therefore, there is a need for a damping spindle that is more robust and less prone to shifting and breaking during rotation.

SUMMERY OF THE UTILITY MODEL

Aiming at the technical problems in the technology, the damping structure which is mutually supported in the hole is particularly provided, and the shaft shoulder plane is arranged on the rotating shaft, so that the limiting torque is enhanced; the problem that limiting stability is not high in the prior art is solved.

The rotating shaft with the limiting damping comprises a flip connecting piece, a limiting block, a torsion shaft and a fixing component, wherein one end of the flip connecting piece is provided with a connecting part, the other end of the flip connecting piece is provided with a first round hole, and the torsion shaft penetrates through the first round hole to be connected with the fixing component; one end of the torsion shaft is provided with a threaded portion, the axial direction of the threaded portion is cut to form two symmetrical shaft shoulder planes, the limiting block is provided with a second through hole matched with the threaded portion, the threaded portion sequentially penetrates through the second through hole, the first round hole is connected with the fixed assembly, an axial limiting protrusion is formed at one end, close to the first round hole, of the limiting block in a protruding mode, a radial abutting portion is formed by the side wall of the first round hole towards the circular protrusion, and the inner side face of the radial abutting portion in the circumferential direction abuts against the axial limiting protrusion.

Preferably, the second through hole is tightly matched with the threaded portion, and one surface, close to the threaded portion, of the axial limiting protrusion is a plane and is attached to the plane of the shaft shoulder.

Preferably, the two axial limiting protrusions are symmetrically arranged on the limiting block.

Preferably, the radial abutting parts are two and circumferentially distributed on the side wall of the first round hole.

Preferably, one surface of the axial limiting protrusion, which is far away from the second through hole, is an arc surface and is tightly attached to the side wall of the first round hole.

Preferably, the fixing component sequentially comprises a self-locking nut, a first gasket, a first butterfly gasket, a second butterfly gasket and a second gasket, and the end face of the second gasket is tightly attached to the end face of the flip connecting piece; the part of the threaded part penetrating out of the first round hole sequentially penetrates through the second gasket, the second butterfly gasket, the first butterfly gasket and the first gasket and is in threaded connection with the self-locking nut.

Preferably, the first butterfly gasket and the second butterfly gasket are closely attached to each other.

Preferably, the first gasket and the second gasket are provided with profiled holes matched with the threaded portions.

The utility model has the beneficial effects that: the utility model discloses a rotating shaft with limiting damping, which comprises a flip connecting piece, a limiting block, a torsion shaft and a fixing component, wherein one end of the flip connecting piece is provided with a connecting part, the other end of the flip connecting piece is provided with a first round hole, and the torsion shaft penetrates through the first round hole to be connected with the fixing component; one end of the torsion shaft is provided with a threaded part, two symmetrical shaft shoulder planes are formed by cutting in the axial direction of the threaded part, the limiting block is provided with a second through hole matched with the threaded part, and the threaded part sequentially penetrates through the second through hole and the first round hole to be connected with the fixing assembly; the axial outer cylindrical surfaces of the two axial limiting bulges are in precise clearance fit with the inner side surfaces of the flip ears, when the rotating shaft works and is limited, the circumferential side surfaces of the two axial limiting bulges are respectively extruded and stressed with the circumferential side surfaces of the two radial supporting parts, so that the two pairs of stress surfaces meet a couple relation, and uncontrollable displacement and limiting torque are enhanced when the rotating shaft is limited.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the present invention;

FIG. 3 is an assembly view of the flip cover connector, the stop block and the torsion shaft of the present invention;

FIG. 4 is an exploded view of the flip cover connector, the stop block and the torsion bar of the present invention;

fig. 5 is a schematic view of the present invention in use.

The main element symbols are as follows:

1. a flip cover connector; 11. a connecting portion; 12. a first circular hole; 121. a radial abutting portion;

2. a limiting block; 21. a first through hole; 22. an axial limiting bulge;

3. twisting a shaft; 31. a threaded portion; 311. a shoulder plane; 32. a rod portion;

4. a fixing assembly; 41. a self-locking nut; 42. a first gasket; 43. a first butterfly gasket; 44. a second butterfly gasket; 45. a second gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

The following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "suspended", and the like do not imply that the components are required to be absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-5, in particular to a rotating shaft with a limiting damping, which includes a flip connecting member 1, a limiting block 2, a torsion shaft 3 and a fixing component 4, wherein one end of the flip connecting member 1 is provided with a connecting portion 11, the connecting portion is used for connecting a cover body to be turned outside, and the other end is provided with a first circular hole 12; the plane where the first round hole is located and the connecting part are not coplanar and are formed by laser cutting, and the torsion shaft 3 penetrates through the first round hole 12 and is connected with the fixed component 4; one end of the torsion shaft 3 is provided with a threaded portion 31, the other side is a rod portion 32, the torsion shaft is connected with an external rotating mechanism, two symmetrical shaft shoulder planes 311 are formed by cutting in the axial direction of the threaded portion 31, the limiting block 2 is provided with a second through hole 21 matched with the threaded portion 31, the threaded portion 31 sequentially penetrates through the second through hole 21, the first round hole 11 is connected with the fixing component, an axial limiting protrusion 22 is formed at one end of the limiting block 2 close to the first round hole 12 in a protruding mode, a radial abutting portion 121 is formed by the side wall of the first round hole 12 towards the circular protrusion, and the inner side face of the radial abutting portion in the circumferential direction abuts against the axial limiting protrusion. The axial outer cylindrical surfaces of the two axial limiting bulges are in precise clearance fit with the inner side surfaces of the flip ears, when the rotating shaft works and is limited, the circumferential side surfaces of the two axial limiting bulges are respectively extruded and stressed with the circumferential side surfaces of the two radial supporting parts, so that the two pairs of stress surfaces meet a couple relation, and uncontrollable displacement and limiting torque are enhanced when the rotating shaft is limited.

In this embodiment, the second through hole 21 is tightly fitted with the threaded portion 31, and a surface of the axial limiting protrusion 22 close to the threaded portion is a plane and is attached to the plane of the shoulder. The axial limiting bulge can be ensured to directly extend into the first round hole to move so as to form the support of the radial support part. Preferably, the two axial limiting protrusions are symmetrically arranged on the limiting block. Preferably, two radial abutting parts are arranged, and are circumferentially distributed on the side wall of the first round hole; the limiting bulge in the limited space has large volume, and the bearable counter-torque force is correspondingly increased; to provide structural stability.

In this embodiment, the face of the axial limiting protrusion away from the second through hole is an arc face and is tightly attached to the side wall of the first round hole. The structure can not receive the influence of other structure power when rotating for the rotation process is more smooth and easy.

In this embodiment, the fixing component 4 sequentially includes a self-locking nut 41, a first gasket 42, a first butterfly gasket 43, a second butterfly gasket 44, and a second gasket 45, and an end surface of the second gasket is tightly attached to an end surface of the flip connector; the part of the threaded part penetrating out of the first round hole sequentially penetrates through the second gasket, the second butterfly gasket, the first butterfly gasket and the first gasket and is in threaded connection with the self-locking nut. Preferably, the first butterfly-shaped gasket and the second butterfly-shaped gasket are arranged in an oppositely close fit manner; in this embodiment, the first gasket and the second gasket are both provided with a profiled hole adapted to the threaded portion. Finally, the user turns the self-locking nut according to the requirement, so that the damping force of the whole rotating shaft with the limiting damping is adjusted; making the assembly more robust.

The utility model has the advantages that:

the axial outer cylindrical surfaces of the two axial limiting bulges are in precise clearance fit with the inner side surfaces of the flip ears, when the rotating shaft works and is limited, the circumferential side surfaces of the two axial limiting bulges are respectively extruded and stressed with the circumferential side surfaces of the two radial supporting parts, so that the two pairs of stress surfaces meet a couple relation, and uncontrollable displacement and limiting torque are enhanced when the rotating shaft is limited. .

The above disclosure is only for a few specific embodiments of the present invention, but the present invention is not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims

1. A rotating shaft with limiting damping is characterized by comprising a flip connecting piece, a limiting block, a torsion shaft and a fixing component, wherein one end of the flip connecting piece is provided with a connecting part which is used for connecting external turnover equipment, the other end of the flip connecting piece is provided with a first round hole, and the torsion shaft penetrates through the first round hole and is connected with the fixing component; one end of the torsion shaft is provided with a threaded portion, the axial direction of the threaded portion is cut to form two symmetrical shaft shoulder planes, the limiting block is provided with a second through hole matched with the threaded portion, the threaded portion sequentially penetrates through the second through hole, the first round hole is connected with the fixed assembly, an axial limiting protrusion is formed at one end, close to the first round hole, of the limiting block in a protruding mode, a radial abutting portion is formed by the side wall of the first round hole towards the circular protrusion, and the inner side face of the radial abutting portion in the circumferential direction abuts against the axial limiting protrusion.

2. The rotating shaft with the limit damping function according to claim 1, wherein the second through hole is tightly matched with the threaded portion, and one surface of the axial limit protrusion, which is close to the threaded portion, is a plane and is attached to the plane of the shaft shoulder.

3. A rotating shaft with limiting damping according to claim 2, wherein two axial limiting protrusions are symmetrically arranged on the limiting block.

4. A rotating shaft with limiting damping as claimed in claim 3, wherein there are two radial abutting portions, and the circumference is distributed on the side wall of the first circular hole.

5. A rotating shaft with limiting damping according to claim 2, wherein one surface of the axial limiting protrusion, which is far away from the second through hole, is an arc surface and is tightly attached to the side wall of the first circular hole.

6. The rotating shaft with the limit damping function according to claim 1, wherein the fixing assembly sequentially comprises a self-locking nut, a first gasket, a first butterfly gasket, a second butterfly gasket and a second gasket, and the end face of the second gasket is tightly attached to the end face of the flip connecting piece; the part of the threaded part penetrating out of the first round hole sequentially penetrates through the second gasket, the second butterfly gasket, the first butterfly gasket and the first gasket and is in threaded connection with the self-locking nut.

7. The rotating shaft with the limit damping function according to claim 6, wherein the first butterfly-shaped gasket and the second butterfly-shaped gasket are arranged in a close fit manner in an opposite direction.

8. A rotating shaft with limit damping according to claim 6, wherein the first gasket and the second gasket are provided with profiled holes matched with the threaded portions.