CN217462872U

CN217462872U - Double-cam rotating shaft structure

Info

Publication number: CN217462872U
Application number: CN202221445820.8U
Authority: CN
Inventors: 刘延文
Original assignee: Chongqing Weishuo Hengji Computer Accessories Co ltd
Current assignee: Chongqing Weishuo Hengji Computer Accessories Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-09-20
Anticipated expiration: 2032-06-10

Abstract

The utility model discloses a double-cam rotating shaft structure, which comprises a shaft core, a first bracket and a second bracket, wherein the first bracket and the second bracket are sleeved at the two ends of the shaft core; the driving assembly comprises a fixed cam and a movable cam, the fixed cam is sleeved on the shaft core and connected with the first support, the movable cam is in sliding fit with the shaft core, the fixed cam is arranged between the movable cam and the first support, a first nut and a first gasket are mounted at the end part of the shaft core, a spring is sleeved on the shaft core, and the spring is positioned between the first gasket and the movable cam; the movable cam and the fixed cam are respectively provided with a driving salient point and a driving surface; a first resistance area and a second resistance area are respectively arranged on two sides of a driving surface arranged on the fixed cam, and a third resistance area is arranged on the movable cam; the double-cam rotating shaft structure has the advantages of simple structure, convenience in use and low cost.

Description

Double-cam rotating shaft structure

Technical Field

The utility model relates to a mechanical structure technical field especially relates to a double cam pivot structure.

Background

At present, more and more electronic products, such as a display screen of a notebook computer, a flip camera on the notebook computer, a flip camera on a mobile phone, and the like, are turned over through a rotating shaft structure, but the current rotating shaft structure has many parts, is complex in structure, does not meet the requirement of light weight, and is high in cost.

Disclosure of Invention

To the not enough of above-mentioned prior art, the technical problem that this patent application will solve provides a simple structure, convenient to use, two cam pivot structures with low costs.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a double-cam rotating shaft structure comprises a shaft core, a first support and a second support, wherein the first support and the second support are sleeved at two ends of the shaft core;

the driving assembly comprises a fixed cam and a movable cam, the fixed cam is sleeved on the shaft core and connected with the first support, the movable cam is in sliding fit with the shaft core, the fixed cam is arranged between the movable cam and the first support, a first nut and a first gasket are mounted at the end part of the shaft core, a spring is sleeved on the shaft core, and the spring is positioned between the first gasket and the movable cam; the movable cam and the fixed cam are respectively provided with a driving salient point and a driving surface; a first resistance area and a second resistance area are respectively arranged on two sides of a driving surface arranged on the fixed cam, and a third resistance area is arranged on the movable cam; when the manual adjustment is carried out, the first resistance area is matched with the driving salient point, and the second resistance area is matched with the third resistance area; when the automatic adjustment is carried out, the driving convex points are matched with the driving surface; when the switch is closed, the second resistance area is opposite to the driving salient point. The movable cam is applied with force through the spring, so that the movable cam is matched with the fixed cam to complete automatic adjustment.

The shaft core is provided with a flat position, and the movable cam is provided with a flat surface in sliding fit with the flat position. The movable cam is convenient to limit, so that the movable cam can only slide along the axial direction of the shaft core and cannot rotate.

The fixed cam is provided with a clamping hook which is opposite to the first support in a protruding mode, the first support is provided with a clamping hook hole opposite to the clamping hook, and the clamping hook is fixed with the clamping hook hole. The first bracket is driven to rotate by the fixed cam.

The auxiliary torsion assembly comprises a second nut installed at the end part of the shaft core, two second gaskets sleeved on the shaft core and an elastic sheet arranged between the two second gaskets. The second nut is matched with the second gasket to apply force to the elastic sheet, and the elastic sheet applies force to the second gasket on the side of the second support to enable the second support and the shaft core/the second support and the second gasket to generate friction force. Because the driving component has the function of rotational inertia, the driven component can overshoot, so that the auxiliary torque component is added for carrying out terminal deceleration, and the auxiliary torque component is used for adjusting the rotational speed of the driving component and the resistance magnitude of manual adjustment. The spring plate applies force to the second gasket to press the second support on the shaft core.

Wherein, the second resistance area is a plane, and the driving salient point is provided with a round angle.

In conclusion, the double-cam rotating shaft structure has the advantages of simple structure, convenience in use and low cost.

Drawings

Fig. 1 is a schematic structural view of a dual-cam rotating shaft structure of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a side view of fig. 1.

Fig. 4 is a schematic view of the mandrel.

Fig. 5 is a schematic view of a first bracket.

Fig. 6 is a schematic view of the fixed cam.

Fig. 7 is a schematic view of another orientation of fig. 6.

Fig. 8 is a schematic view of the movable cam.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "upper, lower" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

As shown in fig. 1-8, a dual-cam rotating shaft structure includes a shaft core 1, and a first bracket 2 and a second bracket 3 sleeved at two ends of the shaft core 1, wherein two ends of the shaft core 1 are respectively provided with a driving assembly and an auxiliary torsion assembly corresponding to the first bracket 2 and the second bracket 3;

the driving assembly comprises a fixed cam 4 and a movable cam 5, the fixed cam 4 is sleeved on the shaft core 1 and is connected with the first support 2, the movable cam 5 is in sliding fit with the shaft core 1, the fixed cam 4 is arranged between the movable cam 5 and the first support 2, a first nut 6 and a first gasket 7 are mounted at the end part of the shaft core 1, a spring 8 is sleeved on the shaft core 1, and the spring 8 is positioned between the first gasket 7 and the movable cam 5; the movable cam 5 and the fixed cam 4 are respectively provided with a driving salient point 9 and a driving surface 10; a first resistance area 11 and a second resistance area 12 are respectively arranged on two sides of a driving surface 10 arranged on the fixed cam 4, and a third resistance area 13 is arranged on the movable cam 5; when the manual adjustment is carried out, the first resistance area 11 is matched with the driving salient point 9, and the second resistance area 12 is matched with the third resistance area 13; when the automatic adjustment is carried out, the driving salient points 9 are matched with the driving surface 10; when closed, the second resistive region 12 is opposite to the driving bump 9. The movable cam is applied with force through the spring, so that the movable cam is matched with the fixed cam to complete automatic adjustment.

In this embodiment, the shaft core is provided with a flat position 14, and the movable cam has a flat surface 15 in sliding fit with the flat position. The movable cam is convenient to limit, so that the movable cam can only slide along the axial direction of the shaft core and cannot rotate.

In this embodiment, the fixed cam is provided with a hook 16 protruding over the first bracket, the first bracket is provided with a hook hole 17 over the hook, and the hook is fixed to the hook hole. The first bracket is driven to rotate by the fixed cam.

In this embodiment, the auxiliary torsion assembly includes a second nut 18 mounted at an end of the shaft core, two second spacers 19 sleeved on the shaft core, and an elastic sheet 20 disposed between the two second spacers. The second nut is matched with the second gasket to apply force to the elastic sheet, and the elastic sheet applies force to the second gasket on the second support side to enable the second support and the shaft core/the second support and the second gasket to generate friction force. Because the driven part is likely to overshoot due to the rotational inertia of the driving assembly, the auxiliary torque assembly is added to perform end deceleration, and the auxiliary torque assembly is used for adjusting the rotational speed of the driving assembly and the resistance value of manual adjustment. The elastic sheet applies force on the second gasket to press the second support on the shaft core.

In this embodiment, the second resistance region is a plane, and the driving bump has a rounded corner.

The principle is as follows:

during automatic adjustment, the spring exerts pressure to the movable cam through the first nut and the first gasket, so that the movable cam has an axial motion trend, the driving salient point of the movable cam transmits pressure to the driving surface of the fixed cam, the first support is fixed with the fixed cam, and at the moment, the movable cam can only axially slide relative to the shaft core, so that the axial motion trend of the movable cam is converted into a rotary motion trend for driving the shaft core, the shaft core can rotate in the loose matching hole in the first support and the fixed cam combination body, and the function of driving the shaft core to be installed with an object needing to automatically rotate is achieved.

During manual adjustment, after drive bump and driving surface autogiration, reach the resistance district, first resistance district and drive bump cooperation, the cooperation in second resistance district and third resistance district for friction production resistance each other can provide manual regulation location in the certain limit under the effect of spring.

The automatic angle regulation, the manual angle regulation and the resistance can correspondingly adjust and adapt the driving salient point, the driving surface, the first resistance area, the second resistance area and the third resistance area of the cam group according to specific requirements. Typical range of motion: automatic 0-180 deg. and manual 180-230 deg..

Finally, it should be noted that: various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, to the extent that such modifications and variations of the present invention fall within the scope of the present claims and their equivalents, it is intended that the present invention encompass such modifications and variations as well.

Claims

1. A double-cam rotating shaft structure is characterized by comprising a shaft core (1), a first support (2) and a second support (3) which are sleeved at two ends of the shaft core, wherein a driving assembly and an auxiliary torsion assembly are respectively arranged at two ends of the shaft core corresponding to the first support and the second support;

the driving assembly comprises a fixed cam (4) and a movable cam (5), the fixed cam is sleeved on the shaft core and connected with the first support, the movable cam is in sliding fit with the shaft core, the fixed cam is arranged between the movable cam and the first support, a first nut (6) and a first gasket (7) are mounted at the end part of the shaft core, a spring (8) is sleeved on the shaft core, and the spring is positioned between the first gasket and the movable cam; the movable cam and the fixed cam are respectively provided with a driving salient point (9) and a driving surface (10); a first resistance area (11) and a second resistance area (12) are respectively arranged on two sides of a driving surface arranged on the fixed cam, and a third resistance area (13) is arranged on the movable cam; when the manual adjustment is carried out, the first resistance area is matched with the driving salient points, and the second resistance area is matched with the third resistance area; when the automatic adjustment is carried out, the driving convex point is matched with the driving surface; when the switch is closed, the second resistance area is opposite to the driving salient point.

2. A twin cam shaft arrangement as defined in claim 1 wherein the core is provided with flats (14) and the moving cam has flats (15) which are a sliding fit with the flats.

3. A dual-cam shaft structure according to claim 1, wherein the fixed cam is provided with a hook (16) protruding from the position opposite to the first bracket, the position opposite to the hook of the first bracket is provided with a hook hole (17), and the hook is fixed with the hook hole.

4. The dual-cam rotating shaft structure of claim 1, wherein the auxiliary torsion assembly comprises a second nut (18) mounted at an end of the shaft core, two second gaskets (19) sleeved on the shaft core, and a spring sheet (20) arranged between the two second gaskets.

5. A dual cam shaft configuration as claimed in claim 1, wherein said second resistance region is planar and said drive lobe has rounded corners.