TWI839897B - Displaceable rotating shaft and foldable device provided with the rotating shaft - Google Patents

Abstract

A displaceable shaft and a foldable device provided with the shaft, wherein a support portion is provided on a support seat; a connecting section and a fixed section are provided at two ends of the shaft respectively; a connecting rod assembly is synchronously rotatably connected to the connecting section with its first external end, and is pivotally connected to the support portion with its second external end; a guide assembly has a guide rod, one end of which is pivotally fitted between the connecting rod assembly on the connecting section and a torque assembly, and the guide rod is provided with at least one guide portion , can guide the guide rod to slide relative to the support; the torsion assembly is located between the guide rod and the end of the connecting section; when the shaft rotates relative to the support, the shaft can link the connecting rod assembly to adjust the angle and total length of the connection between the connecting rods, and then follow the guidance of the guide assembly to push the shaft to change the distance between the shaft and the support, and the torsion assembly and the connecting rod assembly are spaced by the guide assembly, so that they can be linked under the condition of low friction resistance.

Description

Displaceable rotating shaft and foldable device provided with the rotating shaft

The present invention relates to a displaceable rotating shaft and a foldable device provided with the rotating shaft, and in particular to a rotating shaft structure which can adjust the distance between two rotating shafts as two local parts of an electronic device are opened and closed, and can keep each linkage mechanism in a minimum friction state during operation.

In the invention case No. 202221236 of the Republic of China, a pivot module and an electronic device are disclosed, wherein the pivot module includes: a limit seat, a sliding seat, at least one connecting rod assembly and a rotating shaft; the two sides of the limit seat are respectively provided with mutually parallel fixed plates, and a plurality of locking pieces are respectively penetrated through the two fixed plates and locked to the top surface of a first body; the sliding seat is reciprocatingly arranged on the limit seat; the connecting rod assembly is respectively connected to the limit seat and the sliding seat, wherein at least one connecting rod assembly is used to transmit external force and drive the sliding seat to generate displacement; the rotating shaft is penetrated through at least one connecting rod assembly and the sliding seat and the rotating shaft is connected to a bracket. When the first body and the bracket move relative to each other (open or close), the bracket drives the shaft to rotate relative to the sliding seat and applies force to at least one connecting rod assembly to drive the sliding seat to move along the limiting seat, so that the edge of the bracket can be relatively far away from or close to the heat dissipation area of the first body.

However, from the patent drawings of the invention, it can be seen that the extension of the rotating shaft is a circular cross-section, and the second connecting rod of the connecting rod assembly has a circular hole that fits into the extension. Therefore, the extension of the rotating shaft obviously does not have a mechanism to drive the second connecting rod of the connecting rod assembly to rotate, and there is no description of the driving method of the above-mentioned second connecting rod in its patent specification. In terms of application, there are concerns that it is difficult to implement.

Furthermore, the invention does not provide a mechanism for elastically tightening the connecting rod assembly and the sliding seat, so that the friction resistance between the bracket and the first body is relatively small; in actual application, the bracket cannot be positioned at any opening angle, and when the angle of the bracket is less than 90 degrees, the bracket may automatically close downward, resulting in a lack of application.

In the invention case of Patent Publication No. I715198 of the Republic of China, a shaft module and a portable electronic device are disclosed, wherein the shaft module includes: a first bracket, a second bracket, a first shaft, a hinge and a connecting rod, wherein the first shaft is arranged on the first bracket assembled on the first body, and the hinge is arranged on the second bracket assembled on the second body; the first bracket has a vertical plate, and a track and a positioning hole are arranged on the vertical plate; the first shaft has a positioning portion and a shaft portion, and the positioning portion is embedded in the positioning hole to form a positioning; the connecting rod It includes a first end and a second end opposite to each other, the first end is pivoted to the shaft of the first rotating shaft; the second bracket has an extension portion pivoted to the second end of the connecting rod, and the extension portion is provided with an axial hole; the hinge has a moving portion and an axial portion, the axial portion is inserted into the axial hole, and the moving portion is pivotally extended into the track of the first bracket; in addition, the rotating shaft module also includes a torsion assembly, when the second bracket and the hinge are pivoted relative to each other, the friction force generated by the torsion assembly provides torque between the second bracket and the hinge.

During operation, when the first and second bodies are in a folded and retracted state, the extension of the second bracket and the connecting rod are in a fully extended position, so that the distance between the hinge and the first shaft is at a maximum; and as the first body pivots and unfolds relative to the second body, the extension of the second bracket and the connecting rod gradually retract relative to each other; until the first and second bodies are fully unfolded, the hinge is close to the first shaft so that the distance between the two is The distance between the two ends of the first and second ends of the first housing can be minimized; by using such a shaft module to form a similar connecting rod mechanism, when the hinge moves closer to or farther from the first shaft as the second bracket rotates relative to the first bracket, the first housing can be opened and closed by rotating relative to the second body, thereby avoiding the situation in which the mechanism interference is easily caused by being limited by a fixed shaft or a shaft with a fixed spacing, so that the first body can be smoothly rotated and opened relative to the second body.

However, in the above structure, since the torque member of the torque assembly directly acts on the axial direction of the hinge, a large friction force is generated between the abutment portion of the hinge and the extension portion of the second bracket. This friction force not only causes resistance when the first and second bodies are unfolded and folded, but also causes severe wear to the extension portion of the second bracket, affecting the service life of the entire shaft module.

In view of the above-mentioned application disadvantages of the rotating shaft module structure that can change the spacing during operation, the inventor has studied ways to improve these disadvantages, and finally the present invention is produced.

The main purpose of the present invention is to provide a displaceable shaft and a foldable device provided with the shaft, wherein a support portion is provided on a support seat; a connecting section and a fixed section are provided at both ends of the shaft; a connecting rod assembly is synchronously rotatably connected to the connecting section with its first external end, and is pivotally connected to the support portion with its second external end; a guide assembly has a guide rod, one end of which is pivotally fitted between the connecting rod assembly on the connecting section and a torque assembly, and the guide rod is provided with at least one guide portion, which can guide the guide rod relative to the support portion. The support part slides; the torque assembly is located between the guide rod and the end of the connecting section; when the shaft rotates relative to the support, the shaft can link the connecting rod assembly to adjust the angle and total length of the connection between the connecting rods, and then follow the guidance of the guide assembly to push the shaft to change the distance between the shaft and the support, and the torque assembly and the connecting rod assembly are spaced by the guide assembly, and can be linked under the condition of low friction resistance, so that not only can the force applied during operation be reduced, but also the wear between the connecting rod assembly and adjacent components can be reduced.

Another object of the present invention is to provide a displaceable shaft and a foldable device provided with the shaft, wherein the connecting rod assembly has a first connecting rod and a second connecting rod pivotally connected to each other, a swing notch is partially provided at one end of the first connecting rod close to the second connecting rod, a pivoting portion capable of pivoting the second connecting rod is convexly provided in the swing notch, and the notch depth of the swing notch is greater than the thickness of the second connecting rod, so that when the first connecting rod and the second connecting rod pivot relative to each other, their joint portion has a minimum contact friction area and a minimum friction resistance, which can further increase the service life of the overall assembly.

In order to make the above-mentioned purpose, effect and characteristics of the present invention more specifically understood, the following drawings are provided for explanation:

Please refer to Figures 1 and 2, it can be seen that the main structure of the present invention includes: a support 1, a rotating shaft 2, a connecting rod assembly 3, a guide assembly 4 and a torque assembly 5; wherein the support 1 is combined with a preset fixing assembly A (such as a host body) of an electronic device (which can be a laptop or similar electronic product), and the support 1 has an upright supporting portion 11, and the supporting portion 11 is provided with at least one positioning hole 12 and a hinge hole 13.

A stop flange 21 is provided around the middle section of the rotating shaft 2, and a fixed section 23 combined with a preset movable component B (such as a screen) of the electronic device is provided on one side of the stop flange 21. A connecting section 22 is provided on the other side of the stop flange 21, and at least one flat chamfered surface 221 is provided on the periphery of the connecting section 22, so that the radial cross section of the connecting section 22 is non-circular. A locking end 24 (which can be an external thread) is provided at one end of the connecting section 22 away from the stop flange 21, and a locking member 241 (which can be a nut) is provided on the locking end 24.

The connecting rod assembly 3 includes a first connecting rod 31 and a second connecting rod 32 which are pivotally connected to each other at one end; the first connecting rod 31 is provided with a first external end 31a at one end away from the second connecting rod 32, and the first external end 31a is synchronously rotatably connected to the connecting section 22; the second connecting rod 32 is provided with a second external end 32a at one end away from the first connecting rod 31, and the second external end 32a is pivotally connected to the supporting portion 11.

In this embodiment, the first connecting rod 31 is provided with a connecting hole 311 having the same radial cross-sectional shape as the connecting section 22 at the first external end 31a. The connecting hole 311 is fitted into the connecting section 22, so that the first connecting rod 31 can be synchronously pivoted with the rotation of the shaft 2, and the second external end 32a of the second connecting rod 32 can be pivoted to the pivot hole 13 via a pivot piece 321.

Furthermore, a swing notch 312 is provided at one end of the first connecting rod 31 close to the second connecting rod 32. A pivoting portion 313 (which may be a cam) is provided inside the swing notch 312 to pivotally connect one end of the second connecting rod 32. A stopper 33 may be coupled to one side of the swing notch 312. The stopper 33 has a connecting portion 312 that is fitted to the connecting section 22. The movable hole 331 can cover the pivoting portion 313, and the notch depth C between the bottom surface of the swing notch 312 and the stopper 33 (the top edge of the swing notch 312) is greater than the connecting rod thickness D of the second connecting rod 32 at the mutually pivoting position, so that the second connecting rod 32 will not rub against the bottom surface of the swing notch 312 and the stopper 33 when pivoting.

The guide assembly 4 has a guide rod 41, and a circular shaft hole 411 is provided at one end of the guide rod 41, which can be rotatably fitted on the connecting section 22. At least one guide portion 412 (which can be a guide groove) is provided on the guide rod 41. The guide portion 412 (guide groove) can be fitted with a guide member 413 fixed on the positioning hole 12 to form a guide for the guide rod 41 to slide relative to the support portion 11.

In a feasible embodiment, the guide assembly 4 is further provided with a connecting piece 42, which has an axial hole 421 that can be pivoted on the connecting section 22, and the connecting piece 42 is provided with a connected protrusion 422 on one side facing the guide rod 41, and the guide rod 41 is provided with a connecting part 414 that can correspond to the connected protrusion 422, so that the connecting piece 42 can be connected to the guide rod 41 and form a synchronous connection.

The torque assembly 5 is coupled to the connecting section 22 and is located between the guide rod 41 and the locking end 24 of the connecting section 22. At least a portion of the torque assembly 5 can pivot synchronously with the shaft 2 and generate friction with the guide assembly 4 to provide a pivoting torque for the shaft 2.

In this embodiment, the torque assembly 5 is composed of at least one elastic assembly 50 assembled with a plurality of friction members 51, 52, 53 having a high friction coefficient. Linkage holes 511, 521, 531 (having the same radial cross-sectional shape as the linkage section 22) are respectively provided on the friction members 51, 52, 53. The linkage holes 511, 521, 531 can be respectively fitted on the linkage section 22 to form a linkage. The elastic assembly 50 can generate an elastic force on the friction members 51, 52, 53 along the axial direction of the rotation shaft 2 to increase the friction between the friction members 51, 52, 53 and/or between the friction member 51 and the guide assembly 4.

In a feasible embodiment, the friction member 51 can be arranged between the guide rod 41 and the linking member 42, the friction member 52 can be arranged between the linking member 42 and the elastic component 50, and the friction member 53 can be arranged between the locking member 241 and the elastic component 50, so that when the friction members 51, 52, 53 rotate synchronously with the shaft 2, they can generate friction with the guide component 4 and the locking member 241; and when the linking member 42 moves toward the elastic component 50, the friction member 53 can be arranged between the guide rod 41 and the linking member 42. At least one latched portion 423 (which may be a recessed portion or a protruding portion) is provided on one surface of the friction member 52, and a latching portion 522 (which may be a protruding portion or a recessed portion) is provided on the adjacent friction member 52. When the friction member 52 pivots to a preset angle along the rotating shaft 2, the latching portion 522 can abut against and engage with the latched portion 423, so that the movable component B and the fixed component A can be positioned at a specific lifting angle.

Please refer to Figures 3 to 5. It can be seen that when the above structure of the present invention is actually operated, when the movable assembly B is completely retracted (covered) on the fixed assembly A, the connection between the first connecting rod 31 and the second connecting rod 32 of the connecting rod assembly 3 is at the minimum bending angle, and the guide member 413 is located at one end of the guide portion 412 close to the left side (as shown in Figure 3). At this time, the distance (total length) between the edge of the movable assembly B and the edge of the fixed assembly A is the smallest; when the movable assembly B is gradually pivoted and lifted relative to the fixed assembly A, the first connecting rod 31 of the connecting rod assembly 3 rotates with the shaft 2, so that the connection between the first connecting rod 31 and the second connecting rod 32 is bent. The bending angle gradually increases, and the guide member 413 gradually moves to the middle position of the guide portion 412 (as shown in FIG. 4). At this time, the distance (total length) between the edge of the movable component B and the edge of the fixed component A gradually increases; when the movable component B pivots to a fully lifted position relative to the fixed component A, the connection bending angle between the first connecting rod 31 and the second connecting rod 32 is the largest, and the guide member 413 is located at one end of the guide portion 412 close to the right side (as shown in FIG. 5). At this time, the distance (total length) between the edge of the movable component B and the edge of the fixed component A is the largest, so that the heat generated during the internal operation of the fixed component A can be dissipated to the outside.

When the above structure is actually in operation, since the elastic component 50 and the friction components 51, 52, 53 of the torque component 5 are arranged on the side of the guide rod 41 of the guide component 4 close to the locking component 241 (locking end 24), a larger friction resistance can be generated at the above-mentioned position; and the first connecting rod 31 and the stopper 33 synchronously linked with the connecting rod assembly 3 can generate a smaller friction resistance with the adjacent stopper flange 21 and the guide rod 41, so that not only the force applied during operation can be reduced, but also the wear between the connecting rod assembly 3 (the first connecting rod 31) and the adjacent components can be reduced.

Furthermore, since the first connecting rod 31 has a swing notch 312, the end of the second connecting rod 32 will not be clamped by the bottom surface of the swing notch 312 of the first connecting rod 31 and the stopper 33, so that the second connecting rod 32 has a minimum contact friction area and the lowest friction resistance with the adjacent components during the pivoting process, which can further increase the service life of the entire component.

In summary, the displaceable shaft and the foldable device provided with the shaft of the present invention can achieve the purpose of adjusting the distance between the two shafts as the two parts of the electronic device are opened and closed, and can keep the linkage mechanisms in a state of minimum friction during operation to improve the service life of the overall mechanism. It is indeed a novel and progressive invention, and an invention patent application is filed in accordance with the law; however, the above description is only for the purpose of describing the preferred embodiment of the present invention, and any changes, modifications, alterations or equivalent replacements based on the technical means and scope of the present invention should also fall within the scope of the patent application of the present invention.

1: Support

11: Support

12: Positioning hole

13: hinge hole

2: Rotation axis

21: Stop flange

２２: Linking section

221: flat surface

23: Fixed segment

24: Locking end

241: Locking parts

3: Connecting rod assembly

31: First connecting rod

31a: First external terminal

311, 331, 511, 521, 531: Linkage holes

312: Swinging gap

313: Joint

32: Second connecting rod

32a: Second external terminal

321: hinge

33: Stopper

4: Guidance components

41: Guide rod

411, 421: shaft hole

412: Guidance Department

413: Guide

414: Linkage

42: Linkage

422: Linked convex part

423: Stuck part

5: Torque assembly

51, 52, 53: Friction parts

522: latch part

50: Elastic components

A:Fixed components

B:Activity components

C: Notch depth

D: Connecting rod thickness

FIG. 1 is a three-dimensional structural exploded view of the present invention.

Figure 2 is a schematic diagram of the overall combination of the present invention and related components.

FIG. 3 is an operation diagram (I) of the present invention.

Figure 4 is an operational diagram (II) of the present invention.

Figure 5 is an operational diagram (III) of the present invention.

1: Support

11: Support part

12: Positioning hole

13: hinge hole

2: Rotating axis

21: Stop flange

22: Linking section

221: Flat-cut noodles

23: Fixed segment

24: Locking end

241: Locking parts

3: Connecting rod assembly

31: First connecting rod

31a: first external terminal

311, 331, 511, 521, 531: linkage holes

312: Swinging gap

313: Joint

32: Second connecting rod

32a: Second external terminal

321: hinged parts

33: Stopper

4: Guidance components

41: Guide rod

411, 421: shaft hole

412: Guidance Department

413: Guide piece

414: Linkage Department

42: Linkage

422: Linked convex part

423: Stuck part

5: Torque assembly

51, 52, 53: Friction parts

522: latch part

50: Elastic components

C: Notch depth

D: Connecting rod thickness

Claims (10)

A displaceable rotating shaft comprises: a support seat (1) on which a supporting portion (11) is provided; a rotating shaft (2) on which a connecting section (22) is provided at one end and a fixing section (23) is provided at the other end; a connecting rod assembly (3) having a first external connection end (31a) and a second external connection end (32a), wherein the first external connection end (31a) is a ground connection that can rotate synchronously. The invention relates to a guide assembly (4) having a guide rod (41) which is pivotally mounted on the connecting section (22) at one end and is located between the connecting rod assembly (3) and a torque assembly (5). The guide rod (41) is provided with at least one guide portion (412). The guide portion (412) can guide the guide rod (41) to slide relative to the support portion (11); the torque assembly (5) is combined with the connecting section (22) and is located between the guide rod (41) and an end of the connecting section (22) far from the fixed section (23); the torque assembly (5) can provide a pivot torque for the shaft (2); when the shaft (2) is relative to the support (11), the torque assembly (5) can be provided with a pivot torque. ) rotates, the shaft (2) links the connecting rod assembly (3) to adjust the angle and total length of the connection between the connecting rods, and then follows the guidance of the guide assembly (4) to push the shaft (2) to change the distance between it and the support (1), and the torque assembly (5) and the connecting rod assembly (3) are spaced by the guide assembly (4) so that they can be linked under the condition of low friction resistance. The displaceable shaft as described in claim 1, wherein the support portion (11) is provided with at least one guide member (413) and a pivot hole (13); the second external end (32a) of the connecting rod assembly (3) is pivotally connected to the pivot hole (13) via a pivot member (321); the guide portion (412) is a guide groove that can be fitted into the guide member (413). The displaceable shaft as described in claim 1, wherein the connecting rod assembly (3) comprises a first connecting rod (31) and a second connecting rod (32) pivotally connected to each other at one end, the first connecting rod (31) having one end away from the second connecting rod (32) being the first external end (31a) coupled to the connecting section (22), the second connecting rod (32) having one end away from the first connecting rod (31) being the second external end (32a), and a swinging notch (312) is partially provided at one end of the first connecting rod (31) close to the second connecting rod (32), the swinging notch ( 312) is provided with a hinge portion (313) that can be hinged to the second connecting rod (32). A stopper (33) is connected to one side of the swing notch (312). The stopper (33) can cover the hinge portion (313). The depth (C) of the notch between the bottom surface of the swing notch (312) and the stopper (33) is greater than the thickness (D) of the second connecting rod (32) at the hinged portion, so that the second connecting rod (32) will not rub against the bottom surface of the swing notch (312) and the stopper (33) when pivoting. The displaceable shaft as described in claim 1, wherein the end of the connecting section (22) away from the fixed section (23) has a locking end (24), and a locking member (241) is provided on the locking end (24). A displaceable rotating shaft as described in claim 1, 2, 3 or 4, wherein the torque assembly (5) is composed of an elastic assembly (50) and at least one friction member (51, 52, 53), and the elastic assembly (50) can generate an elastic force on the friction member (51, 52, 53) along the axis of the rotating shaft (2) to increase the friction between the friction members (51, 52, 53) or between the friction member (51) and the guide assembly (4). A displaceable rotating shaft as described in claim 5, wherein the radial cross section of the connecting section (22) is set to be non-circular, and the first external end (31a) is provided with a connecting hole (311) having the same radial cross section shape as the connecting section (22), so that the first external end (31a) hooked on the connecting section (22) can rotate synchronously with the rotating shaft (2); and the friction members (51, 52, 53) are also respectively provided with connecting holes (511, 521, 531) having the same cross section shape as the connecting section (22), so that each friction member (51, 52, 53) hooked on the connecting section (22) can rotate with the rotating shaft (2) and generate friction with the surface of the adjacent component. A displaceable shaft as described in claim 1, 2, 3 or 4, wherein the guide assembly (4) is further provided with a connecting member (42) pivoted on the connecting section (22), the connecting member (42) is provided with a connected protrusion (422) on one side facing the guide rod (41), the guide rod (41) is provided with a connecting member (414) that can correspond to and engage with the connected protrusion (422), so that the connecting member (42) can be connected to the guide rod (41) and form a synchronous connection, and at least one friction member (52) is provided between the connecting member (42) and an elastic assembly (50). A displaceable shaft as described in claim 5, wherein the guide assembly (4) is further provided with a connecting member (42) pivoted on the connecting section (22), the connecting member (42) is provided with a connected protrusion (422) on one side facing the guide rod (41), the guide rod (41) is provided with a connecting member (414) that can correspond to and engage with the connected protrusion (422), so that the connecting member (42) can be connected to the guide rod (41) and form a synchronous connection, and at least one friction member (52) is provided between the connecting member (42) and the elastic assembly (50). As described in claim 7, the movable shaft has at least one latched portion (423) on one side of the linking member (42), and a latching portion (522) is provided on the adjacent friction member (52), and the latching portion (522) can abut against and engage with the latched portion (423) to form a positioning. A foldable device composed of a displaceable shaft as described in any one of application claims 1 to 9, wherein the support (1) is combined with a fixed component (A) preset on an electronic device, and the fixed section (23) of the shaft (2) is combined with a movable component (B) preset on the electronic device.

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