CN214171109U - Double-shaft alternate overturning structure - Google Patents

Abstract

The utility model provides a double-shaft alternately flipping structure, wherein the first rotating part is connected with the first support frame by the first connecting part, and is connected with the first engaging wheel by the first rotating shaft; the second rotating part is connected by the second The second supporting frame is connected to the second supporting frame, and the second engaging wheel is connected with the second rotating shaft; the two ends of the connecting base are respectively pivoted to the first rotating shaft and the second rotating shaft, and one side of the connecting base is provided with an arc-shaped limiting part; The arc-shaped sliding block is connected to the arc-shaped limiting part in a relatively arc-shaped swinging manner. One end of the arc-shaped sliding block has a first pressing part to abut the first engaging part of the periphery of the first engaging wheel to limit the position. The other end of the shaped sliding block has a second pressing portion for pressing against the second engaging portion of the peripheral edge of the second engaging wheel. In this way, when the first rotating shaft and the second rotating shaft rotate relative to each other, the first support frame and the second support frame can be relatively closed or turned from 0 degrees to 360 degrees.

Description

Double-shaft alternate overturning structure

Technical Field

The present invention relates to a dual-axis alternative flip structure, and more particularly to a flip structure mounted on a foldable electronic device that can be opened and closed.

Background

General folding electronic devices, for example: a notebook computer, a tablet computer or a mobile phone, etc., which is mainly connected with a first plate body and a second plate body of an electronic device respectively through a single-shaft hinge or a double-shaft hinge. The first plate body can be an upper cover for installing the display screen, the second plate body can be a base for installing the components, the battery and the keyboard, and the first plate body can be covered or turned to 360 degrees from 0 degree relative to the second plate body.

Wherein, like the "alternately rotatable double-shaft hinge" patent document of the utility model patent of the people's republic of China grant publication No. CN203962677U, disclosed a biax upset structure in turn promptly, mainly included connecting piece, two mandrels, axial moving part and radial moving part. The connecting piece comprises a frame body and a frame body, wherein the frame body and the frame body are respectively provided with an upper shaft hole and a lower shaft hole, the spindles which are parallel to each other are respectively penetrated, one end part of the axial moving piece is led into at least one spiral groove arranged on the surface of one spindle so as to synchronously move and axially slide in and out of the through hole arranged between the upper shaft hole and the lower shaft hole of the frame body. Each mandrel is provided with at least one stopping part, the stopping part of the mandrel and the other end part of the axial moving part are mutually stopped, and the stopping part of the other mandrel and the stopping part arranged on the side surface of the frame body are mutually stopped. Each spindle has a cam part with one concave part at its periphery and multiple concave parts at its periphery. The radial movable piece slides between the clamping cam parts in the radial direction, and can be alternatively clamped and locked in one of the concave parts, and the radial movable piece can be respectively and alternatively matched with the stopping actions to form at least two times of alternative locking actions so as to enable the mandrels to rotate alternatively.

In addition, as shown in taiwan patents TWM442005, TWI653926 and TWM568404, the two spindles are alternately rotated by radially sliding the pulley, the first helical gear and the slider between two axial center connecting lines of the engaging cam portions.

In the above patents, the two spindles can be alternatively rotated only by performing sliding or rolling limit on the connection line of the two spindles through a radial moving member, a pulley, a first helical gear, or a relay engaging member such as a slider. However, this conventional arrangement is not sufficient in reducing the pitch of the structure. Therefore, how to improve the above-mentioned problem is the technical problem to be solved by the present invention.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a biax upset structure in turn can not only improve the problem that the interval between two mandrels can not be effectively reduced because a relay block component must be arranged between the axis connecting lines of the traditional biax to make the two mandrels rotate in turn, but also can effectively reduce the interval between the two mandrels by changing the sliding track of the arc-shaped slider, thereby reducing the overall thickness to be beneficial to the design; the whole volume is light and thin, and the device can meet the requirements of different machine types and sizes.

In order to achieve the above object, the utility model discloses the biax that establishes turns over the structure in turn includes that first rotation piece, second rotate, connecting seat and arc slider. The first rotating part comprises a first connecting part and a first rotating shaft, the first connecting part is connected with the first support frame, the first rotating shaft is connected with the first clamping wheel in a synchronous rotating mode, and the periphery of the first clamping wheel is provided with a first clamping part; the second rotating part comprises a second connecting part and a second rotating shaft, the second connecting part is connected with the second supporting frame, the second rotating shaft is connected with the second clamping wheel in a synchronous rotating mode, and the periphery of the second clamping wheel is provided with a second clamping part; one end of the connecting seat is provided with a first shaft hole for pivoting the first rotating shaft, the other end of the connecting seat is provided with a second shaft hole for pivoting the second rotating shaft, and one side surface of the connecting seat is provided with an arc-shaped limiting part; the arc-shaped sliding block is connected with the arc-shaped limiting part in a mode of swinging relative to the arc, and one end of the arc-shaped sliding block is provided with a first pressing part for pressing and limiting the first clamping part; the other end of the arc-shaped sliding block is provided with a second abutting part for abutting and limiting the second clamping part.

When the rotating mechanism is implemented, at least one first stopping part is further arranged on one side face of the connecting seat, at least one first stopping part is further arranged on the periphery of the first clamping wheel, and the at least one first stopping part correspondingly abuts against the at least one first stopping part to limit the rotating angle of the first rotating part.

When the rotating mechanism is implemented, at least one second stopping part is further arranged on one side face of the connecting seat, at least one second stopping part is further arranged on the periphery of the second clamping wheel, and the at least one second stopping part correspondingly abuts against the at least one second stopping part to limit the rotating angle of the second rotating part.

When in implementation, the connecting seat comprises a left plate body and a right plate body, the right side surface of the left plate body is provided with an arc-shaped limiting part, and the arc-shaped limiting part extends rightwards in the direction of the right side surface far away from the left plate body. The arc limiting part comprises a first arc block and a second arc block, an arc guide groove is formed between the first arc block and the second arc block, and the middle section of the arc sliding block is limited in the arc guide groove in a mode of swinging relative to an arc.

When the arc-shaped sliding block is implemented, the middle section of the arc-shaped sliding block and the arc-shaped guide groove have the same arc angle, and the widths of the first pressing part and the second pressing part at the two ends of the arc-shaped sliding block are respectively larger than the widths of the two ends of the arc-shaped guide groove, so that the arc-shaped sliding block can be connected with the arc-shaped limiting part in a relatively arc-shaped swinging mode.

When implementing, the utility model discloses still include at least one friction positioning subassembly, at least one friction positioning subassembly joins first rotation piece and second rotation piece respectively, and at least one friction positioning subassembly supports the right flank of pressing the right plate body respectively, supplies to produce the rotational friction torsion respectively.

When the friction positioning component is implemented, the friction positioning components are provided with two groups, and the first rotating shaft and the second rotating shaft respectively penetrate through the two groups of friction positioning components and are respectively screwed and fixed with the screw cap; and any group of friction positioning components comprises at least one friction plate and a plurality of spring plates, and the plurality of spring plates are screwed by nuts to be compressed so as to force the at least one friction plate to be in contact with the right side surface of the right plate body to generate rotary friction torsion.

In order to facilitate the further understanding of the present invention, the detailed description is given later.

Drawings

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

fig. 2 is an exploded view of a preferred embodiment of the present invention;

fig. 3 is a front view of a preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view A-A' of FIG. 3;

FIG. 5 is a sectional view taken along line B-B' of FIG. 3;

fig. 6 is a cross-sectional view of the first rotating shaft and the second rotating shaft of the present invention turned over to 180 degrees;

fig. 7 is a cross-sectional view of the first rotating shaft and the second rotating shaft of the present invention turned over to 180 degrees;

fig. 8 is a schematic perspective view of the first rotating shaft and the second rotating shaft of the present invention when they are turned over to 180 degrees;

fig. 9 is a cross-sectional view of the first rotating shaft and the second rotating shaft of the present invention being turned to 360 degrees;

fig. 10 is a cross-sectional view of the first rotating shaft and the second rotating shaft of the present invention being turned to 360 degrees;

fig. 11 is a schematic perspective view of the first rotating shaft and the second rotating shaft of the present invention turning to 360 degrees.

Description of the reference numerals

1: double-shaft alternate overturning structure

2: first rotating member

21: first connecting part

22: first rotating shaft

3: second rotating member

31: second connecting part

32: second rotating shaft

4: first clamping wheel

41: the first large diameter part

42: the first small diameter part

43: a first engaging part

44,44': a first stopping part

5: second engaging wheel

51: second large diameter part

52: second small diameter part

54,54': second stop part

6: connecting seat

61: left plate body

62: right plate body

621: arc-shaped projection

622,623: sector part

624,624': first stop part

625,625': second stop part

63: first shaft hole

64: second shaft hole

65: arc-shaped limiting part

66: first arc block

67: second arc block

68: arc guide groove

7: arc-shaped sliding block

71: first pressing part

72: second pressing part

73: middle section

8,8': friction positioning assembly

81,81': friction plate

82,82': spring leaf

83,83': nut cap

9: first support frame

91: a second support frame.

Detailed Description

Referring to fig. 1 to 5, a preferred embodiment of a dual-axis alternating-turning structure 1 of the present invention includes a first rotating member 2, a second rotating member 3, a first engaging wheel 4, a second engaging wheel 5, a connecting seat 6, an arc-shaped slider 7, and at least one friction positioning assembly 8, 8'. The first rotating member 2 comprises a first connecting portion 21 and a first rotating shaft 22, the first connecting portion 21 is connected to one end of the first rotating shaft 22, and the first connecting portion 21 is connected to the first supporting frame 9 in a locking manner; the other end of the first shaft 22 is a non-circular shaft. The second rotating member 3 includes a second connecting portion 31 and a second rotating shaft 32, the second connecting portion 31 is connected to one end of the second rotating shaft 32, and the second connecting portion 31 is connected to the second supporting frame 91 in a locking manner; the other end of the second shaft 32 is a non-circular shaft. The second supporting frame 91 and the first supporting frame 9 are respectively connected with a screen and a base, or respectively connected with a screen and another screen.

The first engaging wheel 4 has a non-circular shaft hole through it for engaging with the non-circular shaft at the other end of the first rotating shaft 22, so that the first rotating shaft 22 can be connected to the first engaging wheel 4 in a manner of synchronous rotation. The first engaging wheel 4 includes a first large diameter portion 41 and a first small diameter portion 42, which are coaxial, and an arc groove is formed on the periphery of the first large diameter portion 41 and serves as a first engaging portion 43; the first small diameter portion 42 has a radially outwardly projecting segment at its outer periphery, and both side surfaces of the segment serve as first stoppers 44, 44', respectively.

The second engaging wheel 5 has a non-circular shaft hole penetrating through it for engaging with the non-circular shaft at the other end of the second shaft 32, so that the second shaft 32 can be connected to the second engaging wheel 5 in a manner of synchronous rotation. The second engaging wheel 5 includes a second large-diameter portion 51 and a second small-diameter portion 52 which are coaxial, and an arc-shaped groove is formed on the periphery of the second large-diameter portion 51 and serves as a second engaging portion 53; the outer periphery of the second small diameter portion 52 has a radially outwardly projecting sector, and both end faces of the sector serve as second stop portions 54, 54', respectively.

The connecting seat 6 comprises a left plate body 61 and a right plate body 62, wherein the left plate body 61 and the right plate body 62 are arc-shaped plates and are continuously penetrated through a first shaft hole 63 and a second shaft hole 64 respectively; the first shaft 22 and the second shaft 32 respectively pass through the first shaft hole 63 and the second shaft hole 64 to pivotally connect two ends of the connecting base 6. Have the spacing portion 65 of an arc on the right flank of left plate body 61, the spacing portion 65 of arc includes first arc piece 66 and second arc piece 67, and first arc piece 66 and second arc piece 67 extend right with the right flank direction of keeping away from left plate body 61 respectively, form arc guide slot 68 between first arc piece 66 and the second arc piece 67.

The first engaging wheel 4 and the second engaging wheel 5 are sandwiched between the left plate 61 and the right plate 62, and the first large diameter portion 41 and the second large diameter portion 51 are adjacent to the right side surface of the left plate 61, and the first small diameter portion 42 and the second small diameter portion 52 are adjacent to the left side surface of the right plate 62. The left side surface of the right plate 62 has an arc-shaped protrusion 621, the arc-shaped protrusion 621 extends leftwards away from the left side surface of the right plate 62, two ends of the arc-shaped protrusion 621 respectively have sectors 622 and 623, and two end surfaces of the sectors 622 and 623 respectively serve as a first stopping portion 624,624 'and a second stopping portion 625,625'. Therefore, when the two first stopping parts 44,44 'on the periphery of the first engaging wheel 4 respectively and correspondingly press the two first stopping parts 624,624', the rotation angle of the first rotating member 2 can be limited; when the two second stopping portions 54,54 'on the periphery of the second engaging wheel 5 respectively and correspondingly press the two second stopping portions 625,625', the rotation angle of the second rotating member 3 can be limited.

One end of the arc-shaped sliding block 7 is provided with a first pressing part 71, and the end surface of the first pressing part 71 is an arc-shaped surface; the other end of the arc-shaped sliding block 7 is provided with a second pressing part 72, and the end surface of the second pressing part 72 is an arc-shaped surface; the middle section 73 is arranged between the first pressing part 71 and the second pressing part 72, the middle section 73 and the arc-shaped guide groove 68 on the right side surface of the left plate body 61 have the same arc-shaped bending angle, and the widths of the two ends of the arc-shaped guide groove 68 are respectively smaller than the width of the first pressing part 71 and the width of the second pressing part 72. Therefore, when the middle section 73 of the arc-shaped sliding block 7 is limited in the arc-shaped guide groove 68, the arc-shaped sliding block 7 can be connected with the arc-shaped limiting part 65 of the connecting seat 6 in a manner of swinging relative to the arc.

The friction positioning components 8 and 8 'have two sets, and any one set of the friction positioning components 8 and 8' includes a friction plate 81 and 81 'and a plurality of spring strips 82 and 82', so that the first rotating shaft 22 and the second rotating shaft 32 respectively pass through the two sets of the friction positioning components 8 and 8 'and are respectively screwed and fixed by the nuts 83 and 83', and then the plurality of spring strips 82 and 82 'can be respectively compressed, and the friction plates 82 and 82' are forced to contact with the right side surface of the right plate 62 to respectively generate a rotational friction torsion, thereby enabling the first support frame 9 and the second support frame 91 to be freely stopped or positioned at a preset angle position when the first support frame and the second support frame 91 rotate relatively.

When the screen and the base (or one screen and another screen connected to each rotating shaft) connected to each rotating shaft are in a covering state, that is, the first support frame 9 and the second support frame 91 shown in fig. 1, 4 and 5 are in a covering state, the first pressing portion 71 at one end of the arc-shaped slider 7 presses against the periphery of the first engaging wheel 4, and the second pressing portion 72 at the other end of the arc-shaped slider 7 presses against the second engaging portion 53 of the second engaging wheel 5; at this time, the first stop portion 44 'at the periphery of the first engaging wheel 4 correspondingly presses the first stop portion 624' to prevent the first rotating shaft 22 of the first rotating member 2 from rotating clockwise; the second stopping portion 54 on the periphery of the second engaging wheel 5 simultaneously presses the second stopping portion 625, so as to prevent the second rotating shaft 32 of the second rotating member 3 from rotating in the counterclockwise direction, and further prevent the first supporting frame 9 and the second supporting frame 91 from rotating in the same direction.

As shown in fig. 6 to 8, when the first rotating shaft 22 rotates from 0 degree to 180 degrees in the counterclockwise direction with respect to the second rotating shaft 32, the arc-shaped sliding block 7 is maintained at the original position without sliding as shown in fig. 6, and the second pressing portion 72 of the arc-shaped sliding block 7 still presses to lock the second engaging portion 53 of the second engaging wheel 5. When the first shaft 22 rotates to 180 degrees, the first stopping portion 44 at the periphery of the first engaging wheel 4 is pressed against and limited by the first stopping portion 624 on the right plate 62, so that the first shaft 22 can not rotate any more in the counterclockwise direction, and only the second shaft 32 can rotate in the clockwise direction.

As shown in fig. 9 to 11, when the second rotating shaft 32 rotates relative to the first rotating shaft 22 and the second rotating shaft 32 rotates from 180 degrees to 360 degrees clockwise, the second pressing portion 72 of the arc-shaped slider 7 releases the locking action on the second engaging portion 53 of the second engaging wheel 5 by the rotation of the second engaging wheel 5, so that the second pressing portion 72 continuously presses against the periphery of the second large-diameter portion 51 of the second engaging wheel 5, and the middle section 73 of the arc-shaped slider 7 is forced to slide in the arc-shaped guide slot 68, so that the first pressing portion 71 of the arc-shaped slider 7 presses against the first engaging portion 43 on the first large-diameter portion 41 of the first engaging wheel 4, thereby engaging and locking the first rotating shaft 22. When the second shaft 32 rotates to 360 degrees, the second stopping portion 54 'at the periphery of the second engaging wheel 5 is pressed against and limited by the second stopping portion 625' on the right plate 62, and the second shaft 32 can not rotate clockwise any more, so as to achieve the effect of alternate rotation. Therefore, after the double rotating shafts are turned by 360 degrees, the first supporting frame 9 and the second supporting frame 91 connected with each rotating shaft can be adjusted to be parallel to each other, or the screen and the base (or one screen and the other screen connected with each rotating shaft) connected with each rotating shaft can be adjusted to be in a completely overlapped state.

Therefore, the utility model improves the traditional double-shaft 360-degree alternate turnover structure and changes the switching slide block into the arc slide block, the sliding track of the arc slide block can be effectively changed, the distance between the first rotating shaft and the second rotating shaft is reduced, and the whole thickness is further reduced to be beneficial to design; the whole volume is lighter and thinner, and the device can meet the requirements of different machine types and sizes.

Although the present invention has been described with reference to preferred embodiments for achieving the above objects, it is not intended to limit the structural features of the present invention, and it will be understood by those skilled in the art that any obvious changes or modifications are possible within the technical spirit of the present invention and are covered by the claims of the present invention.

Claims (10)

1. A double-shaft alternate turnover structure is characterized by comprising:

the first rotating part comprises a first connecting part and a first rotating shaft, the first connecting part is connected with the first support frame, the first rotating shaft is connected with the first clamping wheel in a synchronous rotating mode, and the periphery of the first clamping wheel is provided with a first clamping part;

the second rotating part comprises a second connecting part and a second rotating shaft, the second connecting part is connected with the second supporting frame, the second rotating shaft is connected with the second clamping wheel in a synchronous rotating mode, and the periphery of the second clamping wheel is provided with a second clamping part;

one end of the connecting seat is provided with a first shaft hole for pivoting the first rotating shaft, the other end of the connecting seat is provided with a second shaft hole for pivoting the second rotating shaft, and one side surface of the connecting seat is provided with an arc-shaped limiting part;

the arc-shaped sliding block is connected with the arc-shaped limiting part in a manner of swinging relative to the arc, and one end of the arc-shaped sliding block is provided with a first pressing part for pressing and limiting the first clamping part; the other end of the arc-shaped sliding block is provided with a second abutting part for abutting and limiting the second clamping part.

2. The dual-axis alternating turnover structure as claimed in claim 1, wherein a side surface of the connecting seat further has at least one first stopping portion, a periphery of the first engaging wheel further has at least one first stopping portion, and the at least one first stopping portion is correspondingly pressed against the at least one first stopping portion to limit a rotation angle of the first rotating member.

3. The dual-spindle alternately-flipping structure as claimed in claim 1 or 2, wherein a side of the connecting seat further has at least one second stopping portion, the periphery of the second engaging wheel further has at least one second stopping portion, and the at least one second stopping portion correspondingly presses against the at least one second stopping portion to limit the rotation angle of the second rotating member.

4. The dual-axis alternating flipping structure of claim 1, wherein the connecting seat comprises a left plate and a right plate, the right side of the left plate has the arc-shaped limiting portion, and the arc-shaped limiting portion extends rightward away from the right side of the left plate.

5. The dual-axis flipping structure according to claim 1 or 4, wherein the arc-shaped limiting portion comprises a first arc-shaped block and a second arc-shaped block, an arc-shaped guide groove is formed between the first arc-shaped block and the second arc-shaped block, and the middle section of the arc-shaped sliding block is limited in the arc-shaped guide groove in a relatively arc-shaped swinging manner.

6. The dual-axis alternating turnover structure as claimed in claim 5, wherein the middle section of the arc-shaped sliding block and the arc-shaped guide slot have the same arc angle, the widths of the first pressing portion and the second pressing portion at the two ends of the arc-shaped sliding block are respectively greater than the widths of the two ends of the arc-shaped guide slot, and the arc-shaped sliding block is connected to the arc-shaped limiting portion in a relatively arc-shaped swinging manner.

7. The dual-axis alternating turnover structure as claimed in claim 4, wherein the left side surface of the right plate further has at least one first stopping portion, the periphery of the first engaging wheel further has at least one first stopping portion, and the at least one first stopping portion is correspondingly pressed against the at least one first stopping portion for limiting the rotation angle of the first rotating member.

8. The dual-axis alternating turnover structure as claimed in claim 4 or 7, wherein the right plate body further has at least one second stopping portion on the left side surface thereof, the second engaging wheel further has at least one second stopping portion on the periphery thereof, and the at least one second stopping portion is correspondingly pressed against the at least one second stopping portion for limiting the rotation angle of the second rotating member.

9. The dual-axis alternating-overturning structure of claim 4, further comprising at least one friction positioning component, wherein the at least one friction positioning component is respectively connected to the first rotating component and the second rotating component, and the at least one friction positioning component is respectively pressed against the right side surface of the right plate body.

10. The dual-axis flipping structure as claimed in claim 9, wherein the friction positioning members have two sets, the first and second shafts respectively pass through the two sets of friction positioning members and are respectively screwed and fixed by nuts; any group of friction positioning components comprises at least one friction plate and a plurality of spring leaves, and the nut is screwed to compress the spring leaves to force the friction plate to be in contact with the right side face of the right plate body so as to generate rotary friction torsion.

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