TWI653926B - A Dual Shaft Alternatively-Flipped Structure - Google Patents

Abstract

The invention is a two-axis alternating flip structure, which is positioned flat with a positioning plate group a first and a second rotating shaft group and a first helical gear in a staggered axial direction; the first rotating shaft group comprises a coaxial wheel body, a first spindle and a first rotating member, wherein the wheel body has a staggered axial direction a first wheel missing portion; the second rotating shaft group includes a concentric second helical gear, a second spindle and a second rotating member; the first helical gear is interleaved axially coupled with the second helical gear, and the first helical gear is circumferential The surface has a second wheel missing portion for concentricity with the wheel body and for its peripheral surface, to the first wheel missing portion for the first helical gear to rotate and for the tooth-like structure to pass, and to the positioning plate group side The first and second limiting portions respectively limit the rotation angles of the first and second engaging portions of the rotating members, and accordingly, the first and second rotating shaft groups are alternately rotated.

Description

Two-axis alternating flip structure

The present invention relates to a two-axis alternating flip structure, and more particularly to a foldable electronic device that can be mounted and closed.

Generally, the folding electronic device, for example, a notebook computer, a tablet computer or a mobile phone, mainly connects the first plate body and the second plate body of the electronic device through a single-axis hinge or a double-axis hinge. The first board may be an upper cover on which the display screen is mounted, and the second board may be a base on which the components, the battery and the keyboard are mounted, and the first board may be covered with respect to the second board or flipped from 0 degrees to 360 degrees.

In the "Sequentially Locked Pivot Assembly" of the Republic of China Patent Publication No. M470492, the support portion has a first stop member and a second stop member. The first shaft and the second shaft are pivotally connected to the support portion, the first shaft has a first limiting member, the first limiting member is disposed corresponding to the first stopping member, the second shaft has the second limiting member, and the second limiting portion The piece corresponds to the second stop setting. The first ring body rotates in conjunction with the first shaft, and the first ring body ring is provided with a first outer annular surface and a radially concave first concave arc portion. The second ring body rotates in conjunction with the second shaft and corresponds to the first ring body. The second ring body ring is provided with a second outer ring surface and a radially concave second concave arc portion. The first concave arc portion is complementary to the second outer annular surface and selectively abuts against each other to lock the first shaft, the second concave arc portion being complementary to the first outer annular surface and selectively abutting each other to lock the second The "two-axis hinge" of the publication No. M536451 includes first and second rotating shafts, two bearing members, a pivot shaft, first and second gears, first and second cams. Two bearing members are respectively provided with first and second shaft holes and located The third shaft hole therebetween, the first and second rotating shafts are respectively rotatably disposed through the first and second shaft holes of the two bearing members, and the pivot shaft is pivotally connected between the third shaft holes of the two bearing members. The first and second gears are respectively sleeved on the first rotating shaft and the pivot shaft and are in mesh with each other. The first and second cams are respectively fixedly sleeved on the pivot shaft and the second rotating shaft. When the first recessed portion of the first cam is engaged with the second cam, the first rotating shaft is locked; when the second recessed portion of the second cam is engaged with the first cam, the second rotating shaft is locked; the first and second cams When the first and second recesses face each other, the first and second shafts are not locked.

With the above two alternate flipping structures, the two rotating shafts can be reversed to 360 degrees. However, the above two structures are respectively a combination of a coaxial spur gear and a cam, or a coaxial spur gear combined with a ring body having an arc recess to achieve the effect of alternately turning the two shafts; in other words, two meshing bodies. The spur gears and the two ring bodies/cams abutting/engaging each other are respectively located in different radial planes for respectively engaging movement, abutting/carding cooperation, and therefore, one of the respective spur gears and one ring must be further required. The body/cam is coaxially arranged to transmit motion and is provided with another ring/shield such that two spur gears and one ring/shield on one radial plane are aligned with each other, and two on the other radial plane A ring body having an arc recess and a full circular ring body or two cams and a washer are aligned with each other to achieve an effective alternate flipping action between the two rotating shafts. Since each of the ring bodies/cams and the spur gears described above belong to separate components or parts, it is necessary to simultaneously connect two components on the same rotating shaft, which will increase the number of components, thereby increasing the axial length and overall. The volume and increase the manufacturing and assembly process and time. Moreover, whether it is manufacturing or assembly, the influence of dimensional tolerances will increase due to the increase in the number of constituent members or parts. In addition to causing trouble, it is also prone to gaps, especially in actual test use. It is easy for the spur gears that are coupled to each other to have a problem that the rotation cannot be effectively synchronized due to the gap.

In view of the above, in order to provide a structure different from the conventional technology and to improve the above disadvantages, the inventors have accumulated many years of experience and continuous development and improvement, and the present invention has been produced.

SUMMARY OF THE INVENTION One object of the present invention is to provide a two-axis alternating flip structure by disposing a helical gear in an axial direction between a wheel body parallel to each other and another helical gear, and directly affecting the wheel body and the helical gear and respectively The spur gears and the two cams (the ring body having the arc recesses) which are alternately arranged in the axial direction are respectively arranged in different radial planes and two toothed spur gears. There is a gap between them, which is unable to effectively rotate synchronously, and the problem of increasing the overall volume, increasing the number of processing steps and time, and the like, so that it can be applied to a thinned folding electronic device, and the wheel body directly interacts with the helical gear. Braking, so that the helical gear can be synchronized with another helical gear to reduce the occurrence of idling, thereby improving product quality, extending service life, effectively reducing axial length, thereby reducing overall volume, and reducing processes and components to reduce Cost of production.

For the above purpose, the biaxial alternating flip structure of the present invention comprises a first rotating shaft set, a second rotating shaft set, a first helical gear and a positioning plate set. Wherein, the first rotating shaft group comprises a wheel body and a first mandrel and a first rotating member disposed coaxially with the wheel body, wherein the axial centers are all facing the X-axis, and the circumference of the wheel body has a first wheel In the missing portion, the first wheel missing portion extends in a direction interlaced with the axis of the wheel body to traverse the circumferential surface of the wheel body, the first rotating member has a first engaging portion; the second rotating shaft group is parallel to the first rotating shaft The second rotating shaft set includes a second helical gear and a second mandrel disposed coaxially with the second helical gear and a second rotating member, the second rotating member having a second engaging portion; the first spiral The gear is coupled with the second helical gear in a staggered axial direction, so that the axis of the first helical gear is staggered to the axis of the wheel body toward the Y axis, and the first wheel of the wheel body allows the first helical gear The partial wheel body and the toothed structure pass, and the tooth structure on the circumferential surface of the first helical gear has a second wheel missing portion to allow the wheel body to rotate; thereby, the second wheel missing portion corresponds to the circumference of the wheel body Stopping the first helical gear; or making the first round in the second round of the missing portion of the first wheel of the wheel Rotatable portion; and the positioning plate is positioned a first group of lines were set rotating shaft, the second shaft and the first set of helical gears, the side groups of the positioning plate stopper portion is provided with a first And a second limiting portion for respectively limiting the rotation angles of the first engaging portion and the second engaging portion to cooperate with the wheel body to limit or allow the first helical gear to rotate, so that the first rotating shaft group and the second rotating shaft group The rotating shaft group alternately rotates.

In implementation, the positioning plate set includes a first side plate and a second side plate group surrounding the first helical gear. The first mandrel and the second mandrel are pivotally connected to the first side plate, and the second side plate group includes two parallel sides. Two second side plates, two ends of the first helical gear are respectively pivotally connected to the two second side plates.

In implementation, the first limiting portion and the second limiting portion are two protrusions disposed on a side of the first side plate.

In implementation, the first wheel missing portion is a gradually wide open groove, which traverses the circumferential surface of the wheel body with the same width, and gradually widens from the inside to the outside toward the opposite ends of the wheel body; The second wheel missing portion is an arcuate open groove that passes through the tooth structure of the first helical gear circumferential surface in the X-axis direction, and is disposed concentrically with the wheel body.

In implementation, the first wheel missing portion is a gradually wide open groove, which traverses the circumferential surface of the wheel body with the same width, and gradually widens from the inside to the outside toward the opposite ends of the wheel body; The second wheel missing portion is arcuate and extends transversely to the axial direction of the first helical gear to cross the first helical gear such that the second wheel missing portion is in a plane corresponding to the circumferential surface of the wheel body Or the first round of missing parts.

In implementation, the first wheel missing portion is further a curved opening groove, and is disposed concentrically with the first helical gear, and the axis of the first wheel missing portion is vertically staggered to the axis of the wheel body.

In implementation, the inner wall surface of the second wheel missing portion is further a toothless arc surface, and the outer surface of the circular arc surface has a plurality of notches for communicating the respective tooth gaps of the tooth structure.

In implementation, the arc surface of the second wheel missing portion further forms a short tooth structure, and the short tooth structure continues the tooth structure of the circumferential surface of the first helical gear to connect the tooth gaps of the short tooth structure Each tooth gap of the tooth structure.

In implementation, the plane of the second wheel missing portion further forms a short-toothed structure, and the short-toothed structure continues the tooth-like structure of the circumferential surface of the first helical gear, so that the teeth of the short-toothed structure are connected Passing through the tooth gap of the tooth structure.

In one embodiment, one end of the first mandrel is connected to a first plate body, and one end of the second mandrel is connected to a second plate body, and the first rotating shaft group and the second rotating shaft group are alternately rotated, so that the first A plate can be flipped relative to the second plate and alternately flipped between 0 and 360 degrees.

In order to further understand the present invention, the specific embodiments of the present invention and the effects achieved thereby are described in detail below with reference to the drawings and drawings.

1‧‧‧Double-axis alternating flip structure

2‧‧‧First shaft group

21‧‧‧ wheel body

211‧‧‧ First round of missing parts

22‧‧‧First mandrel

221,321‧‧‧ plane

23‧‧‧First rotating part

231‧‧ First First Joint Department

232‧‧‧First stop surface

233‧‧‧second stop surface

24‧‧‧First friction unit

25‧‧‧First Torque Unit

26‧‧‧First board

27‧‧‧ Nuts

3‧‧‧Second shaft set

31‧‧‧Second helical gear

32‧‧‧Second mandrel

33‧‧‧Second rotating parts

331‧‧‧Second Bonding Department

332‧‧‧ third stop surface

333‧‧‧4th stop surface

34‧‧‧Second friction unit

35‧‧‧Second Torque Unit

36‧‧‧Second plate

37‧‧‧ nuts

4‧‧‧ positioning plate set

41‧‧‧ Positioning board

42‧‧‧ Subject

43‧‧‧First side panel

431‧‧‧First Limitation Department

432‧‧‧Second Limitation

44‧‧‧Second side panel

441‧‧‧ second side panel

5‧‧‧First helical gear

51‧‧‧ Second round of missing parts

511‧‧‧ arc surface

512‧‧‧ plane

513‧‧‧dodo-shaped structure

52‧‧‧ pivot

53‧‧‧ tooth structure

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is an exploded view of the preferred embodiment of the present invention.

Figure 2 is a perspective view of a preferred embodiment of the present invention.

Fig. 3 is a cross-sectional view taken along line A-A' of Fig. 2.

Figure 4 is a perspective view of a portion of the components of the preferred embodiment of the present invention.

Figures 5 and 6 are schematic views of the state of use of the preferred embodiment of the present invention when flipped 180 degrees.

7 and 8 are schematic views showing the state of use of the preferred embodiment of the present invention when it is turned 360 degrees.

Figure 9 is a perspective view showing the first helical gear of the present invention further forming a short-toothed structure on the arcuate surface of the inner wall of the second wheel missing portion.

Figure 10 is a plan cross-sectional view showing the first helical gear of the present invention in the form of a bow in the second wheel portion.

Figure 11 is a plan cross-sectional view showing the first helical gear of the present invention further forming a short toothed structure in the plane of the arcuate second wheel missing portion.

Fig. 12 is a schematic view showing the state of use of the first helical gear of the present invention when the second wheel missing portion is implemented in an arc shape.

The two-axis alternating flip structure of the present invention connects a first plate body with a first rotating shaft group, and a second plate body for a second rotating shaft group, the first plate system is an upper cover for mounting a display screen, and the second plate system is installed with zero. The base of the component, battery and keyboard and the second plate. The wheel circumference mask of the first rotating shaft group has a first wheel missing portion, a first helical gear and a second helical gear of the second rotating shaft group are engaged with each other, and the second helical gear has a second wheel missing portion. After the first plate and the first rotating shaft group are rotated by 180 degrees with respect to the second rotating plate, the restriction of the first helical gear is released, and then the second helical gear of the second plate and the second rotating shaft set is opposite to the first A helical gear is rotated 180 degrees to cause the first plate to be turned 360 degrees relative to the second plate.

Please refer to FIG. 1 to FIG. 8 , which is a schematic diagram of a preferred embodiment of the biaxial alternate flip structure and a state of use thereof, including a first rotating shaft group 2 , a second rotating shaft group 3 , and a positioning plate group 4 . And a first helical gear 5. In each figure, the X axis represents the direction of the axis of rotation of the axis of the first rotating shaft set 2 and the axis of the second rotating shaft set 3, and the axis of the first helical gear 5 is represented by the Y axis. The direction of the rotation axis line is then perpendicular to the X and Y axes in the Z axis, thereby assisting the description.

The first rotating shaft set 2 includes a wheel body 21, a first mandrel 22, a first rotating member 23, a first friction unit 24 and a first torque unit 25. One end of the first mandrel 22 is connected to a first plate body 26. After the first mandrel 22 passes through the wheel body 21, the first friction unit 24 and the first torsion unit 25, a nut 27 is screwed. The wheel body 21, the first mandrel 22, the first friction unit 24 and the first torsion unit 25 are coaxially pivoted, that is, the mandrels are all facing the X-axis. Through the frictional slip of the first friction unit 24 and the torsion generated by the first torsion unit 25 in the rotational friction, the first plate body 26 can freely stagnate while rotating. A portion of the circumference of the first mandrel 22 has two positioning planes 221 which are axially and parallel to the axis of the first mandrel 22, thereby passing through the first rotating member 23, allowing the first rotating member 23 and the first A mandrel 22 rotates synchronously.

The wheel body 21 is a ring having no teeth, and the wheel body 21 is sleeved with the first mandrel 22, and is implemented. The wheel body 21 can also be directly formed on the first mandrel 22, and the circumference of the wheel body 21 has a first wheel missing portion 211, which is a gradually wide opening groove, and the first wheel missing portion 211 is The first wheel missing portion 211 is transverse to the circumferential surface of the wheel body 21, that is, the first wheel missing portion 211 as the open groove is extended in the direction (Y axis) of the axis of the wheel body 21 The circumferential surface of the wheel body 21 is traversed by the same width, and is gradually widened from the inside of the groove of the opening groove toward the outside of the groove body toward the opposite ends of the wheel body 21 (X-axis), so that the opening groove is in Y The axial direction is open, and the groove width in the X-axis direction is slightly larger than the radial width of the partial wheel body of the first helical gear 5 to accommodate the partial wheel body of the first helical gear 5 and the teeth on the circumferential surface Therefore, in order to enable the wheel body 21 to directly interact with the first helical gear 5, it is preferable to make the first wheel missing portion 211 an arcuate opening groove and the first helical gear 5 is disposed coaxially, and the axis of the first wheel missing portion 211 is perpendicularly staggered in the X-axis direction of the axis of the wheel body 21 toward the Y-axis, in other words, the first wheel missing portion 211 is As a part of a virtual cylinder, the virtual cylinder and the axis of the first wheel missing portion 211 are perpendicularly intersected with the axis of the wheel body 21. The first rotating member 23 is an annular piece, and a sector-shaped protrusion is radially protruded from the periphery of the annular piece in a direction away from the axis. The sector-shaped protrusion is used as the first engaging portion 231, and the sector is convex. A first stop surface 232 and a second stop surface 233 are formed on each side of the block.

The second rotating shaft set 3 includes a second helical gear 31, a second spindle 32, a second rotating member 33, a second friction unit 34 and a second torque unit 35. The second mandrel 32 is connected to a second plate 36. The second mandrel 32 passes through the second helical gear 31, the second friction unit 34 and the second torsion unit 35, and is screwed by a nut 37. Therefore, the second helical gear 31, the second spindle 32, the second friction unit 34, and the second torsion unit 35 are coaxially pivoted, and the axes of the components are also oriented toward the X-axis. The second plate body 36 is free to stagnate when rotated by the frictional slip of the second friction unit 34 and the torque generated by the second torsion unit 35 in the rotational friction. In practice, the second helical gear 31 can also be directly formed on the second mandrel 32, and the peripheral edge of the portion of the second mandrel 32 has two axial and parallel positions with the axis of the second mandrel 32. The plane 321 is used to allow the second rotating member 33 to rotate in synchronization with the second spindle 32 after passing through the second rotating member 33. The second rotating member 33 is an annular sheet body, and the annular sheet body A scallop is radially protruded from the periphery of the ridge, and the scallop is formed as a second engaging portion 331. The two sides of the scallop are respectively formed with a third stop surface 332 and a fourth stop. Stop surface 333. Therefore, when the second helical gear 31 is integrally formed with the second mandrel 32, and the wheel body 21 is integrally formed with the first mandrel 22, the same mandrel blank can be shared, and then the wheel body portion of the mandrel blank is shared. The helical gear structure or the involute structure is machined to form the second helical gear 31 or the wheel body 21 having the first wheel missing portion 211, thereby reducing the number of processes and components to reduce production costs.

The positioning plate group 4 includes a plurality of positioning plates 41 and a main body 42. The plurality of positioning plates 41 respectively have two pivoting holes, so that after the first mandrel 22 and the second mandrel 32 respectively pass, the first heart is The shaft 22 and the second mandrel 32 are fixed at positions parallel to each other. The main body 42 is a frame having an opening on one side, and includes a first side plate 43 and a second side plate group 44. The first side plate 43 has two pivot holes respectively pivotally connected to the first mandrel 22 and the second mandrel. 32. One side of the first side plate 43 is provided with two protrusions, and the two protrusions are respectively used as a first limiting portion 431 and a second limiting portion 432. The second side plate group 44 includes two second side plates 441 which are parallel to each other. The two second side plates 441 respectively have a circular hole, and the axes of the two circular holes are in the Y axis on the same axis.

The first helical gear 5 is located in a space surrounded by the first side plate 43 and the second side plate group 44. The two axial ends of the first helical gear 5 respectively pass through the circular holes on the two second side plates 441, so that the first The two shaft ends of a helical gear 5 are respectively pivotally connected to the two second side plates 441. When implemented, the first helical gear 5 can also have a shaft hole and pass through the shaft hole and the two with a pivot 52. A circular hole in the two side plates 441. The first helical gear 5 and the second helical gear 31 are coupled to each other in a staggered axial direction, so that the axial center of the first helical gear 5 is staggered to the axial center of the wheel body 21 in the Y-axis direction, in order to make the wheel body 21 directly The first helical gear 5 can better interact with each other, so that the first wheel missing portion 211 of the wheel body 21 allows the partial wheel body of the first helical gear 5 in the rotated state and the tooth-like structure 53 of its circumferential surface to pass, and The toothed structure 53 on the circumferential surface of the first helical gear 5 has a second wheel missing portion 51 for allowing the wheel body 21 to rotate. The second wheel missing portion 51 is threaded through the first helical gear 5 in the X-axis direction. An arcuate open groove of the peripheral tooth structure 53, which is disposed concentrically with the wheel body 21, in other words The second wheel missing portion 51 is a part of a virtual cylinder, and the virtual cylinder is parallel to the axis of the second wheel missing portion 51 or overlaps the axis of the wheel body 21, wherein the two axes are Preferably, the superimposition is used to shorten the spacing between the two mandrels, so that when the wheel body 21 rotates, it is close to or adjacent to the circumferential surface of the wheel body 21 or the first wheel missing portion 211, and the second wheel is also missing. The inner wall surface of the portion 51 is designed as a toothless circular arc surface 511 to facilitate formation of a very small gap with the circumferential surface of the wheel body 21 or close to the circumferential surface of the wheel body 21, and around the circular arc surface 511. A plurality of notches are provided for communicating the respective tooth gaps of the tooth structure 53, and the injected grease is stored to facilitate smooth rotation.

Secondly, in order to reduce the influence of the tolerance generated in the manufacturing and assembly, as shown in Fig. 9, the second wheel missing portion 51 as the arcuate opening groove is further formed on the circular arc surface 511 of the inner wall thereof. a short-toothed structure 513, wherein each of the crests of the short-toothed structure 513 is parallel to the circular arc surface 511 and the circumferential surface of the wheel body 21, and the short-toothed structure 513 is continuous with the circumferential surface of the first helical gear 5. The tooth structure 53 causes the tooth gaps of the short tooth structure 513 to communicate with the tooth gaps of the tooth structure 53, so that the circumferential surface of the wheel body 21 and the short tooth structure in the second wheel missing portion 51 When 513 is in contact with each other, reducing the area of rotational friction is also advantageous for storing the injected grease and facilitating smooth rotation.

Furthermore, the second round portion 51 of the present creation can also be bowed as shown in Figures 10 to 12, that is, a virtual arcuate cylinder (inferior arcuate cylinder) parallel to the first spiral The axial direction of the gear 5 (Y-axis) extends across the first helical gear 5, and the first helical gear 5 is formed into another arcuate cylinder (the superior arcuate cylinder), so that the second wheel missing portion 51 When the toothless plane 512 is used or when the plane 512 further forms a short tooth structure to correspond to and/or abuts the circumferential surface of the wheel body 21, the circumferential surface of the wheel body 21 will be the first spiral The gear 5 forms a stop function until the plane 512 of the second wheel missing portion 51 or the short toothed structure of the plane 512 corresponds to the first wheel missing portion 211, and then the first helical gear 5 is released for rotation. The toothed structure 53 of the circumferential surface of the first helical gear 5 is successively introduced into and out of the first wheel missing portion 211; thus, after the second wheeled portion 51 of the first helical gear 5 is implemented by the virtual arcuate cylinder, When the above-mentioned arc-shaped open groove is adopted, it is easier to grind the entire shape, and it is also useful for application in thinning. In a folding electronic device. In addition, the short tooth structure formed by the plane 512 continues the tooth structure 53 of the circumferential surface of the first helical gear 5, so that the tooth gaps of the short tooth structure communicate with the tooth gaps of the tooth structure 53, which is also advantageous. Stores grease and helps smooth rotation.

Therefore, when the first plate body 26 is in the closed state with respect to the second plate body 36, a part of the wheel body 21 of the first rotating shaft group 2 is received in the second wheel missing portion 51 of the first helical gear 5. In this case, the first helical gear 5 cannot be rotated at this time, and since the first helical gear 5 and the second helical gear 31 are coupled to each other, the second helical gear 31 and the second plate 36 cannot rotate synchronously.

As shown in FIGS. 5 and 6, in the above-mentioned closed state, a part of the wheel body 21 can be rotated directly in the second wheel missing portion 51 of the first helical gear 5, while the first plate 26 is opposed to the first plate 26 The second plate 36 is turned 180 degrees, and when the first stop surface 232 of the first engaging portion 231 of the first rotating member 23 is pressed against the first limiting portion 431, the limit effect is achieved and the rotation cannot be continued. The first wheel missing portion 211 of the wheel body 21 directly corresponds to and abuts the second wheel missing portion 51 of the first helical gear 5, and the rotation limit of the first helical gear 5 is released and can be rotated. As shown in Figures 7 and 8, since the first helical gear 5 is in a self-rotating state, the user can rotate the second plate 36 and flip it 180 degrees, even if the second plate 36 is opposite to the first After the plate 26 is turned 360 degrees, the third stop portion 332 of the second engaging portion 331 of the second rotating member 33 is pressed against the second limiting portion 432 to achieve the effect of the limit. When the second plate body 36 is rotated in the opposite direction and the first plate body 26 is rotated, the block is blocked by the fourth stop surface 333 and the second stop surface 233, so that the first plate body 26 is opposite to the first plate body 26 The two plates 36 are returned in a closed state, whereby the first plate body 26 and the second shaft group 3 are alternately rotated, so that the first plate body 26 can be turned over with respect to the second plate body 36 and An alternating flip is formed between 0 and 360 degrees.

Therefore, the present invention has the following advantages:

1. The invention directly forms the first wheel missing portion on the wheel body, and forms the second wheel missing portion on the first helical gear, and directly affects the wheel body and the first helical gear, without further As in the conventional technique, the spur gear and the ring body having the arc recess are combined on the same mandrel as interlocking to achieve alternate turning. The effect of the rotation, therefore, can not only effectively shorten the axial length, thereby reducing the overall volume, and can reduce the number of processes and components to reduce production costs.

2. The present invention is based on the same radial plane (see Figures 3, 5, and 7 of the present case), with a wheel body having a first wheel missing portion, a first helical gear having a second wheel missing portion, and a a combination of two helical gears, such that the first helical gear is axially disposed between the wheel body and the second helical gear that are parallel to each other, and the first wheel missing portion is formed on the wheel body in a staggered axial direction, a helical gear is coaxial, and the second wheel missing portion is formed on the first helical gear in a staggered axial direction to be concentric with the wheel body, thereby reducing the wheel body and the first helical gear, and the first The gap between the helical gear and the second helical gear, and shortening the spacing between the two mandrels, is helpful for the creation of the thinned folding electronic device, and also allows the two helical gears to be synchronized In order to reduce the occurrence of idling, thereby improving product quality and extending service life.

3. The second wheel missing portion of the first helical gear of the present invention may adopt a curved open groove structure, and depending on the contact with the circumferential surface of the wheel body, and the type of the grease selected, selectively in the circle of the groove The curved surface adopts a toothless or short tooth structure to adjust the degree of rotational friction, which increases the flexibility of design development. In addition, in addition to the above-mentioned curved opening groove structure, the second wheel missing portion can also form a bow cylinder. The structure crosses the first helical gear, so that the first helical gear becomes another arcuate cylinder, and the application range of the thinned folding electronic device can be further increased.

In summary, according to the above disclosure, the present invention can achieve the intended purpose, and provide a two-axis alternating flip structure capable of effectively reducing the overall volume, reducing the production cost, and improving the product quality to prolong the service life. The value of industrial use is very high, and the invention patent application is filed according to law.

Claims (10)

A two-axis alternating flip structure includes: a first rotating shaft set, comprising a wheel body and a first mandrel and a first rotating member disposed coaxially with the wheel body, the axes are all facing the X axis The circumferential mask of the wheel body has a first wheel missing portion extending transversely to the circumferential surface of the wheel body in a direction interlaced with the axis of the wheel body, the first rotating member having a first engaging portion; a second rotating shaft set parallel to the first rotating shaft set, the second rotating shaft set includes a second helical gear and a second mandrel disposed coaxially with the second helical gear a second rotating member, the second rotating member has a second engaging portion; a first helical gear is coupled to the second helical gear in a staggered axial direction, and the axis of the first helical gear is directed to the Y-axis Interlaced to the axis of the wheel body, and the first wheel missing portion of the wheel body allows the partial wheel body and the tooth structure of the first helical gear to pass, and the tooth structure on the circumferential surface of the first helical gear Having a second wheel missing portion to allow the wheel body to rotate; thereby, the second wheel missing portion corresponds to the circumference of the wheel body And stopping the first helical gear; or rotating the first wheel missing portion in the second wheel missing portion corresponding to the first wheel missing portion of the wheel body; and positioning the plate group, respectively positioning the first a first shaft portion, a second shaft portion and a first helical gear, and a first limiting portion and a second limiting portion are disposed on one side of the positioning plate group for respectively limiting the first engaging portion and the The rotation angle of the second engaging portion cooperates with the wheel body to limit or allow the first helical gear to rotate, so that the first rotating shaft group and the second rotating shaft group alternately rotate. The two-axis alternating flip structure according to claim 1, wherein the positioning plate group includes a first side plate and a second side plate group surrounding the first helical gear, the first mandrel and the first The two side plates are pivotally connected to the first side plate. The second side plate group includes two second side plates that are parallel to each other. The two ends of the first helical gear are respectively pivotally connected to the two second side plates. The two-axis alternating flip structure according to claim 2, wherein the first limit The position portion and the second limiting portion are two protrusions provided on one side of the first side plate. The biaxial alternating flip structure according to claim 1, wherein the first wheel missing portion is a gradually wide open groove that traverses the circumferential surface of the wheel body with the same width and is turned from the inside out. And gradually widening toward opposite ends of the wheel body; the second wheel missing portion is an arc-shaped opening groove extending through the tooth structure of the first helical gear circumferential surface in the X-axis direction, and is disposed coaxially with the wheel body . The biaxial alternating flip structure according to claim 1, wherein the first wheel missing portion is a gradually wide open groove that traverses the circumferential surface of the wheel body with the same width and is internally and outwardly And gradually widening toward opposite ends of the wheel body; the second wheel missing portion is arcuate and extending transversely to the axial direction of the first helical gear to cross the first helical gear to make the second The wheel missing portion is in a plane corresponding to the circumferential surface of the wheel body or the first wheel missing portion. The biaxial alternating flip structure according to the fourth or fifth aspect of the invention, wherein the first wheel missing portion is further an arcuate open groove, and is disposed concentrically with the first helical gear, and the The axis of the first round of the missing portion is vertically staggered to the axis of the wheel body. The biaxial alternating flip structure according to the fourth aspect of the invention, wherein the inner wall surface of the second wheel missing portion is further a toothless arc surface, and the outer surface of the circular arc surface has a plurality of notches for communication Each tooth gap of the tooth structure. The biaxial alternating flip structure according to claim 7, wherein the arc surface of the second wheel missing portion further forms a short tooth structure, and the short tooth structure continues the first helical gear circumferential surface. The toothed structure is such that each tooth gap of the short toothed structure communicates with each tooth gap of the tooth structure. The biaxial alternating flip structure according to claim 5, wherein the plane of the second wheel missing portion further forms a short toothed structure, and the short toothed structure continues the tooth shape of the circumferential surface of the first helical gear The structure is such that each tooth gap of the short toothed structure communicates with each tooth gap of the tooth structure. The biaxial alternating flip structure according to claim 1, wherein one end of the first mandrel is connected to a first plate body, and one end of the second mandrel is connected to a second plate body, and is alternately rotated. The first rotating shaft group and the second rotating shaft group are moved so that the first plate body can be turned over with respect to the second plate body and alternately turned between 0 degrees and 360 degrees.