CN113389801B - Pivoting mechanism - Google Patents
Pivoting mechanism Download PDFInfo
- Publication number
- CN113389801B CN113389801B CN202010173027.6A CN202010173027A CN113389801B CN 113389801 B CN113389801 B CN 113389801B CN 202010173027 A CN202010173027 A CN 202010173027A CN 113389801 B CN113389801 B CN 113389801B
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- China
- Prior art keywords
- shaft section
- torsion structure
- pivot
- angular position
- pivot hole
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- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/045—Pivotal connections with at least a pair of arms pivoting relatively to at least one other arm, all arms being mounted on one pin
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pivots And Pivotal Connections (AREA)
Abstract
A pivoting mechanism comprises a base and a pivoting member. The base is provided with a base body, and a first connecting part and a second connecting part which are formed on the base body and are arranged along a first direction. The first connection portion has a first pivot hole formed along the first direction. The second connecting portion has a second pivot hole formed along the first direction and corresponding to the first pivot hole, and a first torsion structure formed on an inner wall surface defining the second pivot hole. The pivot piece is provided with a first shaft section which can be rotatably and tightly matched with the first pivot hole and a second shaft section which can be rotatably sleeved on the second pivot hole. The second shaft section is formed with a second torsion structure correspondingly matched with the first torsion structure. The pivot mechanism can provide a main positioning torsion force at each angle position, and provide a positioning torsion force again at a specific angle position section so as to promote the total positioning torsion force.
Description
Technical Field
The present invention relates to a pivoting mechanism, and more particularly, to a pivoting mechanism with a changeable positioning torque.
Background
In recent years, a large number of pivot mechanisms are applied to a wide variety of foldable electronic products, and different foldable electronic products have different requirements for the pivot mechanisms, wherein some of the foldable electronic products require the pivot mechanisms to provide a positioning torque at each angular position, and the pivot mechanisms are required to lift the positioning torque at specific angular positions, so how to make the pivot mechanisms meet the requirements is a considerable problem.
Disclosure of Invention
It is an object of the present invention to provide a pivot mechanism that meets the needs of the prior art.
The pivoting mechanism of the invention comprises a base and a pivoting member. The base is provided with a base body, and a first connecting part and a second connecting part which are formed on the base body and are arranged along a first direction. The first connection portion has a first pivot hole formed along the first direction. The second connecting portion has a second pivot hole formed along the first direction and corresponding to the first pivot hole, and a first torsion structure formed on an inner wall surface defining the second pivot hole. The pivot piece is provided with a first shaft section which can be rotatably and tightly matched with the first pivot hole and a second shaft section which can be rotatably sleeved on the second pivot hole. The second shaft section is formed with a second torsion structure correspondingly matched with the first torsion structure. The pivot member is rotatable relative to the base between an initial angular position and a final angular position. When the pivot member is at a partial section thereof between the initial angle position and the end angle position, the first torsion structure of the second connecting portion is in concave-convex fit with the second torsion structure of the second shaft section, so that the second shaft section and the second connecting portion are not in tight fit. When the pivot member is in the other section between the initial angular position and the end angular position, the first torsion structure of the second connecting portion and the second torsion structure of the second shaft section are separated from each other so that the second shaft section and the second connecting portion are in tight fit.
In some embodiments, the first connection portion further has a first split formed outwardly through an inner wall surface defining the first pivot hole in a second direction perpendicular to the first direction and extending in the first direction, and the second connection portion further has a second split formed outwardly through an inner wall surface defining the second pivot hole in the second direction and extending in the first direction.
In some embodiments, the first connecting portion further has a plurality of strip-shaped grooves formed on an inner wall surface defining the first pivot hole and extending in the first direction, and the strip-shaped grooves are arranged in parallel with each other at intervals.
In some embodiments, the first torsion structure includes a groove, the second torsion structure includes a protrusion, when the pivot is at a portion of the first torsion structure between the initial angular position and the final angular position, the protrusion of the second torsion structure of the second shaft section is received in the groove of the first torsion structure of the second connection portion so that the second shaft section and the second connection portion are not tightly matched, and when the pivot is at another portion of the second torsion structure between the initial angular position and the final angular position, the protrusion of the second torsion structure of the second shaft section is disengaged from the groove of the first torsion structure of the second connection portion, and the protrusion abuts against an inner wall surface of the second connection portion defining the second pivot hole so that the second shaft section and the second connection portion are tightly matched.
In some embodiments, the base further has a stop formed on the base, and the pivot member further has a stop, and when the pivot member is at the initial angular position and the final angular position, the stop of the pivot member is stopped by the stop of the base so that the pivot member can only rotate between the initial angular position and the final angular position.
In some embodiments, the first and second shaft sections of the pivot are hollow.
In some embodiments, the first and second connection portions are locally connected to each other adjacent to the base.
The invention enables the pivoting mechanism to provide a main positioning torsion force at each angle position and provide a positioning torsion force again at a specific angle position section to promote the total positioning torsion force through the first pivot hole of the first shaft section and the first connecting part which are tightly matched with each other and the second pivot hole of the second shaft section and the second connecting part which are tightly matched only when the first shaft section and the second shaft section are in partial sections between the initial angle position and the final angle position. In addition, since the structure for providing the main positioning torsion and the secondary positioning torsion are separated from each other, the main positioning torsion is prevented from being reduced due to the fact that the first torsion structure or the second torsion structure outwards props the connecting part when the pivoting mechanism provides the secondary positioning torsion. Furthermore, the first connecting part or the second connecting part is prevented from being easily elastically fatigued and permanently deformed due to overlarge deformation, and all stress for generating torsion is prevented from being concentrated on the first torsion structure or the second torsion structure, so that the first torsion structure or the second torsion structure is prevented from being excessively worn to reduce the service life.
Drawings
Other features and advantages of the present invention will become apparent from the following description of the embodiments with reference to the drawings, in which:
FIG. 1 is a perspective view of one embodiment of a pivoting mechanism of the present invention;
FIG. 2 is a perspective view of FIG. 1 from another perspective;
FIG. 3 is an exploded perspective view of FIG. 1;
FIG. 4 is an exploded perspective view of FIG. 2;
FIG. 5 is a rear view of a base of the embodiment;
FIG. 6 is a front view of the base of the embodiment;
FIG. 7 is a top view of the embodiment with a pivot member in an initial angular position;
FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7, with the pivot member of the embodiment shown in the initial angular position;
FIG. 9 is a cross-sectional view similar to FIG. 8, with the pivot member of the embodiment shown in the end angular position;
FIG. 10 is a cross-sectional view taken along line B-B of FIG. 7, with the pivot member of the embodiment shown in the initial angular position;
FIG. 11 is a cross-sectional view similar to FIG. 10, with the pivot member of the embodiment shown in the end angular position;
FIG. 12 is a cross-sectional view taken along line C-C of FIG. 7, with the pivot member of the embodiment shown in the initial angular position; and
FIG. 13 is a cross-sectional view similar to FIG. 12 with the pivot member of the embodiment shown in the end angular position.
Detailed Description
Before the present invention is described in detail, it should be noted that in the following description, like elements are denoted by the same reference numerals.
Referring to fig. 1 to 4, an embodiment of a pivot mechanism 100 of the present invention includes a base 1 and a pivot member 2. It should be noted that the base 1 may be used for connecting a first body (not shown) of an electronic device, and the pivot member 2 may be used for connecting a second body (not shown) or another base (not shown) of the electronic device, but is not limited thereto.
Referring to fig. 1, 3 to 6, the base 1 has a base 11, and a first connecting portion 12 and a second connecting portion 13 formed on the base 11 and aligned along a first direction D1, wherein the first connecting portion 12 and the second connecting portion 13 have a cylindrical shape extending along the first direction D1 in the present embodiment, but the present invention is not limited thereto. The first connecting portion 12 has a first pivot hole 121 formed along the first direction D1, the second connecting portion 13 has a second pivot hole 131 formed along the first direction D1 and corresponding to the first pivot hole 121, and a first torsion structure 132 formed on an inner wall surface defining the second pivot hole 131. In detail, in the present embodiment, the first connecting portion 12 further has a first split 122 formed through the inner wall surface of the first pivot hole 121 along the second direction D2 perpendicular to the first direction D1 and extending along the first direction D1, and a plurality of strip-shaped grooves 123 formed on the inner wall surface of the first pivot hole 121 and extending along the first direction D1, wherein the strip-shaped grooves 123 are arranged in parallel with each other at intervals. The second connecting portion 13 further has a second split 133 formed in the second direction D2 and penetrating outward from the inner wall surface defining the second pivot hole 131 and extending in the first direction D1. The first and second connecting portions 12 and 13 can be elastically and outwardly spread more easily by the first slit 122, the bar-shaped groove 123, and the second slit 133.
The pivot member 2 has a first shaft section 21 rotatably and tightly fitted through the first pivot hole 121, and a second shaft section 22 rotatably fitted through the second pivot hole 131, and the second shaft section 22 is formed with a second torsion structure 221 correspondingly fitted with the first torsion structure 132.
Referring to fig. 1,3 and 7 to 9, the pivoting member 2 is rotatable relative to the base 1 between an initial angular position and a final angular position. When the pivoting member 2 is at the initial angular position (see fig. 8), the final angular position (see fig. 9), and any position between the initial angular position and the final angular position, the first shaft section 21 and the first connecting portion 12 are in tight fit, so as to provide a main positioning torsion force when the pivoting member 2 is at any position, and thus the pivoting member 2 can be positioned relative to the base 1 in a stepless manner.
Referring to fig. 2,4 and 10-11, when the pivot member 2 is at a partial section thereof between the initial angular position and the final angular position, for example, at the initial angular position in the present embodiment (see fig. 10), the first torsion structure 132 of the second connecting portion 13 is in concave-convex engagement with the second torsion structure 221 of the second shaft portion 22, so that the second shaft portion 22 and the second connecting portion 13 are not in tight engagement. When the pivot member 2 is in the other section between the initial angular position and the end angular position, for example, in the end angular position in the present embodiment (see fig. 11), the first torsion structure 132 of the second connecting portion 13 and the second torsion structure 221 of the second shaft section 22 are disengaged from each other so that there is a tight fit between the second shaft section 22 and the second connecting portion 13.
In detail, in the present embodiment, the first torsion structure 132 includes a groove 132a extending along the first direction D1, the second torsion structure 221 includes a protrusion 221a extending along the first direction D1, when the pivot member 2 is at a portion of the first torsion structure 132 between the initial angle position and the final angle position, the protrusion 221a of the second torsion structure 221 of the second shaft section 22 is received in the groove 132a of the first torsion structure 132 of the second connection portion 13, so that the second shaft section 22 and the second connection portion 13 are not tightly engaged, and when the pivot member 2 is at another portion of the second torsion structure 132 between the initial angle position and the final angle position, the protrusion 221a of the second torsion structure 221 of the second shaft section 22 is separated from the groove 132a of the first torsion structure 132 of the second connection portion 13, and the protrusion 221a abuts against the inner wall surface of the second connection portion 13 defining the second pivot hole 131 and spreads the second connection portion 13 toward the outside, so that the second torsion structure 13 is tightly engaged with the second connection portion 13. However, in other embodiments, the first torsion structure 132 may not include the recess 132a but include the protrusion 221a, and the second torsion structure 221 may not include the protrusion 221a but include the recess 132a, and the number of the recess 132a and the protrusion 221a may be adjusted according to the requirement, which should not be limited to the embodiment.
The second torsion structure 221 of the second shaft section 22 and the first torsion structure 132 of the second connecting portion 13 provide a positioning torsion force when the pivot member 2 is in a part of the specific angular position section, so that the total positioning torsion force provided by the pivot mechanism 100 when the pivot member 2 is in a part of the specific angular position section is increased. It should be noted that, in the present embodiment, the second torsion structure 221 of the second shaft section 22 and the first torsion structure 132 of the second connecting portion 13 only provide the secondary positioning torsion when the pivot member 2 is adjacent to the end angular position, but in other embodiments, the position of the first torsion structure 132 on the second connecting portion 13 and the position of the second torsion structure 221 on the second shaft section 22 may be adjusted according to the requirement, so that the second torsion structure 221 of the second shaft section 22 and the first torsion structure 132 of the second connecting portion 13 provide the secondary positioning torsion when the pivot member 2 is in other different angular position sections, which is not limited to the present embodiment. In addition, although in the present embodiment, the first connecting portion 12, the first shaft section 21, the second connecting portion 13 and the second shaft section 22 are only one, in other embodiments, the number of the first connecting portion 12, the first shaft section 21, the second connecting portion 13 and the second shaft section 22 may be more than two, so as to meet different torque change requirements.
In detail, if the structure for providing the main positioning torque and the structure for providing the sub-positioning torque are the same shaft section and the same connecting portion, when the pivot mechanism 100 provides the sub-positioning torque, the first torque structure 132 or the second torque structure 221 will open the connecting portion outwards to reduce the main positioning torque, so that the total positioning torque deviates from the preset value in the original design. Moreover, this also makes the connection portion easily elastically fatigue and permanently deform due to the excessive deformation, or makes all the stress for generating torsion concentrate on the first torsion structure 132 or the second torsion structure 221, so that the first torsion structure 132 or the second torsion structure 221 is excessively worn to reduce the service life. By separating the structure for providing the primary positioning torque (the first shaft section 21 and the first connecting portion 12) and the structure for providing the secondary positioning torque (the second shaft section 22 and the second connecting portion 13) from each other, it is possible to prevent the primary positioning torque from being reduced due to the first torsion structure 132 or the second torsion structure 221 stretching the connecting portion outward when the pivot mechanism 100 provides the secondary positioning torque, so as to prevent the total positioning torque from deviating from the preset value when originally designed. Furthermore, this can prevent the first connecting portion 12 or the second connecting portion 13 from being easily elastically fatigued and permanently deformed due to excessive deformation, and prevent all the stress for generating torsion from concentrating on the first torsion structure 132 or the second torsion structure 221, so as to avoid the first torsion structure 132 or the second torsion structure 221 from being excessively worn and reducing the service life.
Referring to fig. 4, 6, 8 and 10, in detail, in the present embodiment, the first shaft section 21 and the second shaft section 22 of the pivot member 2 have substantially the same shaft diameter, the second pivot hole 131 of the second connecting portion 13 has a hole diameter corresponding to the shaft diameter of the second shaft section 22, but the first pivot hole 121 of the first connecting portion 12 has a hole diameter smaller than that of the second pivot hole 131 of the second connecting portion 13 (see fig. 6), so that the first shaft section 21 is capable of outwards expanding the first pivot hole 121 of the first connecting portion 12 whenever the first shaft section 21 is in a tightly-fitting state with the first connecting portion 12. However, in other embodiments, the aperture of the first pivot hole 121 of the first connecting portion 12 may be equal to the aperture of the second pivot hole 131 of the second connecting portion 13, and in this embodiment, the first shaft section 21 may be larger than the shaft diameter of the second shaft section 22.
Referring to fig. 2, 4 and 12 to 13, in the present embodiment, the base 1 further has a stop portion 14 formed on the base 11, and the pivot member 2 further has a stop 23, and when the pivot member 2 is at the initial angular position and the final angular position, the stop 23 of the pivot member 2 is stopped by the stop portion 14 of the base 1, so that the pivot member 2 can only rotate between the initial angular position and the final angular position. It should be noted that the number of the stop portions 14 may be two in a variant embodiment, in which the stop 23 of the pivoting member 2 is stopped by one of the stop portions 14 of the base 1 when the pivoting member 2 is at the initial angular position. When the pivot element 2 is in the end angular position, the stop 23 of the pivot element 2 is stopped by the other stop 14 of the base 1.
Referring to fig. 1 and 8, in addition, in the present embodiment, the first shaft section 21 and the second shaft section 22 of the pivot member 2 are hollow, and in detail, the pivot member 2 is integrally hollow and cylindrical, thereby reducing the weight and the material consumption of the pivot member 2. However, it should be noted that the pivot member 2 may be entirely solid in a column shape in other embodiments, and should not be limited to the embodiment.
Referring to fig. 1 and 2, in the present embodiment, the first connecting portion 12 and the second connecting portion 13 are partially connected to each other adjacent to the base 11, so as to enhance the structural strength of the base 1, but in other embodiments, the first connecting portion 12 and the second connecting portion 13 may not be connected to each other, which is not limited to the present embodiment.
In summary, the present invention enables the pivot mechanism 100 to provide a main positioning torque at each angular position and a sub-positioning torque at a specific angular position section to increase the total positioning torque by the first pivot hole 121 of the first shaft section 21 and the first connecting portion 12 being tightly matched with each other, and the second pivot hole 131 of the second shaft section 22 and the second connecting portion 13 being tightly matched only at a partial section between the initial angular position and the final angular position. In addition, by separating the structure for providing the primary positioning torque (the first shaft section 21 and the first connecting portion 12) and the structure for providing the secondary positioning torque (the second shaft section 22 and the second connecting portion 13) from each other, it is possible to avoid that when the pivot mechanism 100 provides the secondary positioning torque, the primary positioning torque is reduced due to the first torsion structure 132 or the second torsion structure 221 stretching out the connecting portion capable of simultaneously providing the primary positioning torque and the secondary positioning torque, so as to prevent the total positioning torque from deviating from the preset value when originally designed. Furthermore, this can prevent the first connecting portion 12 or the second connecting portion 13 from being easily elastically fatigued and permanently deformed due to excessive deformation, and prevent all the stress for generating torsion from concentrating on the first torsion structure 132 or the second torsion structure 221, so as to avoid the first torsion structure 132 or the second torsion structure 221 from being excessively worn and reducing the service life.
The foregoing is merely illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents.
Claims (4)
1. A pivoting mechanism, the pivoting mechanism comprising:
The base is provided with a base body, a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are formed on the base body and are arranged along a first direction, the first connecting part is provided with a first pivot hole formed along the first direction, the second connecting part is provided with a second pivot hole formed along the first direction and corresponding to the first pivot hole, and a first torsion structure is formed on the inner wall surface defining the second pivot hole; and
A pivot member having a first shaft section rotatably and tightly fitted through the first pivot hole, and a second shaft section rotatably fitted through the second pivot hole, the second shaft section being formed with a second torsion structure corresponding to the first torsion structure, the pivot member being rotatable relative to the base between an initial angular position and a final angular position, the first torsion structure of the second connection portion being in a concave-convex fit with the second torsion structure of the second shaft section when the pivot member is in a partial section thereof between the initial angular position and the final angular position so that the second shaft section is not in tight fit with the second connection portion, the first torsion structure of the second connection portion and the second torsion structure of the second shaft section being disengaged from each other when the pivot member is in other sections thereof between the initial angular position and the final angular position so that the second shaft section is in tight fit with the second connection portion;
The first connecting portion further has a first split formed penetrating outward from an inner wall surface defining the first pivot hole in a second direction perpendicular to the first direction and extending in the first direction, and the second connecting portion further has a second split formed penetrating outward from an inner wall surface defining the second pivot hole in the second direction and extending in the first direction;
the first connecting part is also provided with a plurality of strip-shaped grooves which are formed on the inner wall surface defining the first pivot hole and extend along the first direction, and the strip-shaped grooves are arranged at intervals in parallel with each other;
The first torsion structure comprises a groove, the second torsion structure comprises a lug, when the pivoting piece is in a part of the section between the initial angle position and the end angle position, the lug of the second torsion structure of the second shaft section is accommodated in the groove of the first torsion structure of the second connecting part, so that the second shaft section and the second connecting part are not in tight fit, when the pivoting piece is in the other section between the initial angle position and the end angle position, the lug of the second torsion structure of the second shaft section is separated from the groove of the first torsion structure of the second connecting part, and the lug abuts against the inner wall surface of the second connecting part, which is used for limiting the second pivot hole, so that the second shaft section and the second connecting part are in tight fit.
2. The pivot mechanism of claim 1, wherein: the base also has a stop portion formed at the base, and the pivoting member further has a stopper, and when the pivoting member is at the initial angular position and the final angular position, the stopper of the pivoting member is stopped by the stop portion of the base so that the pivoting member can only rotate between the initial angular position and the final angular position.
3. The pivot mechanism of claim 1, wherein: the first shaft section and the second shaft section of the pivoting piece are hollow.
4. The pivot mechanism of claim 1, wherein: the first connecting portion and the second connecting portion are locally connected to each other adjacent to the seat body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010173027.6A CN113389801B (en) | 2020-03-13 | 2020-03-13 | Pivoting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010173027.6A CN113389801B (en) | 2020-03-13 | 2020-03-13 | Pivoting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113389801A CN113389801A (en) | 2021-09-14 |
| CN113389801B true CN113389801B (en) | 2024-04-26 |
Family
ID=77615907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010173027.6A Active CN113389801B (en) | 2020-03-13 | 2020-03-13 | Pivoting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113389801B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379638Y (en) * | 1999-03-04 | 2000-05-24 | 林文祺 | Positioning hinge |
| CN211693214U (en) * | 2020-03-13 | 2020-10-16 | 深圳市富世达通讯有限公司 | Pivoting mechanism |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6671928B2 (en) * | 2001-05-23 | 2004-01-06 | Kuo-Cheng Huang | Hinge assembly for monitor |
-
2020
- 2020-03-13 CN CN202010173027.6A patent/CN113389801B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2379638Y (en) * | 1999-03-04 | 2000-05-24 | 林文祺 | Positioning hinge |
| CN211693214U (en) * | 2020-03-13 | 2020-10-16 | 深圳市富世达通讯有限公司 | Pivoting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113389801A (en) | 2021-09-14 |
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