TWM605828U - Folio hinge structure - Google Patents

Abstract

This creation is a split hinge structure. The first and second arc-shaped grooves are provided on the base body to limit the first and second arc-shaped parts of the first and second rotating parts respectively; The first and second friction torsion parts at one end of the two torsion rods are respectively sleeved with the first and second support rods to respectively generate rotational friction torsion. At least one first and second guide part of the first and second support rods are respectively Correspondingly connect at least one first and second guide rods of the first and second rotating parts in a relatively slidable manner, and a gear set includes a first gear, an intermediate gear and a second gear that are sequentially and adjacently toothed. 1. The second gear and the second gear are respectively connected to the first and second shafts, and one end of the first and second shafts is respectively connected to the other end of the first and second torsion bars, and the other end of the first and second shafts are respectively connected to the seat Physically.

Description

Split hinge structure

This creation is about a hinge, especially a split hinge structure of a foldable electronic device.

Traditional foldable electronic devices, such as the display and base of a notebook computer, mainly connect the sides of the display and the base through a single-spindle hinge to form a pivot, so that the display can be flipped up or closed relative to the base. In addition to traditional notebook computers, especially for existing dual-touch screen computers, the current design direction of folding devices is mainly to improve the shortcomings of dual-touch screen computers, so that the dual-screen During the opening and closing process, they can be close to each other to reduce the gap between each other to prevent the internal structure of the hinge or pivot from being exposed.

For example, the Republic of China Announcement No. I697629 "Hidden Split Hinge", No. M540459 "Two-axis Simultaneous Hinge" and No. I693011 "Foldable Support Frame" respectively propose a solution. Among them, as shown in the “Hidden Split Hinge” patent case of Announcement No. I697629, an arc-shaped seat body is provided with a first and a second arc-shaped slot, which are respectively restricted in a manner that can swing relative to the arc. The first and second arc-shaped blocks of the first and second rotating parts; the first and second torsion units are symmetrical and adjacent to the first side surface of the arc-shaped base, and one end of the symmetrical first and second torsion units The first and second supporting rods are respectively provided, the first and second supporting rods are respectively connected to the first and second elongated openings, and the first and second tooth portions are respectively provided around the first and second supporting rods , The first tooth To engage the second tooth portion, the first and second support rods are respectively connected to the first and second shafts of the first side surface; the first and second pivots respectively pass through the first and second shafts at the other end of the first and second torsion units , The second positioning hole and the first and second limiting slots of the first and second rotating parts. By this, when the first rotating member and the second rotating member respectively rotate relative to the arc-shaped seat body as the axis, the display and the base can be relatively turned over.

The above-mentioned I697629 patent mainly uses the "two sets of torque units" to generate rotational friction on the "dual shaft" to generate torque, so that the display and the base or the two parallel brackets of the dual touch screen computer can rotate relative to each other. And can freely stagnate at a certain angle when rotating. However, in actual use, the torque generated by the "two sets of torsion units" on the "dual shaft" is not very uniform, and one end of the "two sets of torsion units" needs to be fixed to the two ends of the "dual guide rod". In order to maintain balance and stability. As a result, not only will the mutual rotation state of the display and the base or the two side-by-side brackets of the dual touch screen computer be made, the performance of smoothness and stability is not ideal, and the structure will be complicated and the overall volume will be increased.

In view of this, in order to provide a structure that is different from the conventional technology and improve the above-mentioned shortcomings, the creators have accumulated years of experience and continuous research and development and improvement, and this creation was born.

One purpose of this creation is to provide a split hinge structure, which can solve the mutual rotation state between the conventional display and the base or the two side-by-side brackets of the dual touch screen computer. The smooth and stable performance is not very satisfactory. It also complicates the structure and increases the overall volume. By distributing the original torque to the "dual torsion bar" and "dual shaft", the torque output is more stable and uniform, and the whole can be effectively reduced. The thickness facilitates the design and meets the overall market demand of lightness and thinness.

In order to achieve the purpose of the above creation, the folio hinge structure of this creation mainly includes It includes a base, a first rotating part, a second rotating part, a first torsion bar, a second torsion bar and a gear set. The seat body has a first side surface and a second side surface that are opposite to each other. The first side surface and the second side surface have a first arc-shaped groove and a second arc-shaped groove side by side at intervals; the first rotating member includes a first connection Part and a first arc-shaped part, the first connecting part is connected to the first support frame, one side of the first connecting part is provided with at least one first guide rod, and the first arc-shaped part is limited to the first In an arc-shaped slot; the second rotating member includes a second connecting portion and a second arc-shaped portion, the second connecting portion is connected to a second support frame, and one side of the second connecting portion has at least one second guide rod, The second arc-shaped portion is confined in the second arc-shaped slot in a relatively arc-shaped swing; the first torsion bar is adjacent to one side of the first connecting portion, one end of the first torsion bar has a first friction torsion portion, A friction torsion part is sleeved with a first support rod for generating rotational friction torsion. The first support rod has at least one first guiding part, and the at least one first guiding part is correspondingly connected to at least one first guiding part in a relatively slidable manner. Guide rod; the second torsion rod is symmetrical with the first torsion rod, and is adjacent to one side of the second connecting part, one end of the second torsion rod has a second friction torsion part, and the second friction torsion part is sleeved with a second support Rod for generating rotational friction torsion, the second support rod has at least one second guiding part, at least one second guiding part is correspondingly connected to at least one second guiding rod in a relatively slidable manner; and the gear set includes sequential phases A first gear, an intermediate gear and a second gear are adjacent to each other. The first gear is connected to a first shaft, one end of the first shaft is connected to the other end of the first torsion bar, and the other end of the first shaft is connected to the positioning On the seat body; the second gear shaft is connected to a second shaft, one end of the second shaft is connected to the other end of the second torsion bar, and the other end of the second shaft is connected and positioned on the seat body.

In implementation, the base includes a first base and a second base. The first base has a first side surface and a first arc-shaped groove and a second arc-shaped groove juxtaposed with intervals; the second base has a second side surface , And there is a first shaft hole and a second shaft hole on the second side surface for respectively connecting and positioning the first shaft With the second axis.

In implementation, one side of the first connecting portion has two first lugs parallel to each other, a first limiting slot is formed between the two first lugs, and at least one first guide rod passes through the first limiting slot , And two first lugs are respectively connected to two ends of at least one first guide rod.

In implementation, one side of the second connecting portion has two second lugs parallel to each other, a second limiting slot is formed between the two second lugs, and at least one second guide rod passes through the second limiting slot , And at least one second guide rod is connected to two second lugs at both ends.

In implementation, the first guiding part is a perforation radially penetrating the first support rod for the first guide rod to pass through in a relatively slidable manner; the second guiding part is a perforation penetrating the second support rod radially , For the second guide rod to pass through in a relatively sliding manner.

In implementation, the top of the seat body further has a set of first protrusions with opposite end faces, and a first interval is formed between the set of first protrusions. A first arc-shaped slot is formed between; and the first arc-shaped portion includes a first arc-shaped plate and a first arc-shaped convex portion, and the first arc-shaped plate is confined in the first arc-shaped slot in a manner that can swing relative to the arc , The first arc protrusion is limited to be located in the first interval.

In implementation, the top of the seat body further has a set of second protrusions with opposite end faces, a second interval between the set of second protrusions, and the second arc surface of the seat body A second arc-shaped slot is formed between; and the second arc-shaped portion includes a second arc-shaped plate and a second arc-shaped convex portion, and the second arc-shaped plate is confined in the second arc-shaped slot in a manner that can swing relative to the arc , The second arc protrusion is limited to be located in the second interval.

In implementation, there is a first limiting portion and a second limiting portion on both sides of the top of the seat body, one side of the first connecting portion has a first pressing portion, and the first pressing portion is pressed downward for positioning the first For the limiting portion, one side of the second connecting portion is provided with a second pressing portion, and the second pressing portion presses down to position the second limiting portion.

In implementation, after the first shaft and the second shaft respectively pass through the base, a first torsion positioning member and a second torsion positioning member are respectively connected; the first torsion positioning member includes a plurality of first elastic pieces and a first For the cap, the second torsion positioning member includes a plurality of second elastic sheets and a second cap, which are used to sleeve and fix the first shaft and the second shaft respectively.

In implementation, the first torsion positioning member further includes at least one first concave-convex ring, and the second torsion positioning member further includes at least one second concave-convex ring for socketing the first shaft and the second shaft respectively.

In order to facilitate a more in-depth understanding of this creation, I will elaborate on the following:

1: Split hinge structure

2: seat body

21: The first base

211: first side

212: The first limit

213: second limit

214: The first curved surface

215: The first arc slot

216: second curved surface

217: second arc slot

23: The first bump

231: first interval

24: second bump

241: second interval

22: second base

221: Straight

222: horizontal part

223: positioning slot

224: second side

225: first shaft hole

226: second shaft hole

3: The first rotating part

31: The first connection part

311,311’: First lug

312: first limit slot

313: first guide rod

314: The first pressure part

32: The first arc

321: The first curved plate

322: first arc convex

4: The second rotating part

41: The second connecting part

411,411’: second lug

412: second limit slot

413: second guide rod

414: The second pressure part

42: The second arc

421: second curved plate

422: second arc convex

5: The first torsion bar

51: The first positioning hole

52: The first friction torque part

53: The first pole

531: The first guide

6: The second torsion bar

61: second positioning hole

62: The second friction torque part

63: The second pole

631: second guide

7: Gear set

71: first gear

72: Intermediate gear

73: second gear

8: The first torsion positioning piece

81: The first bump ring

82: The first elastic sheet

83: first cap

84: The first uneven part

80: The second torsion positioning piece

801: second bump ring

802: second elastic sheet

803: second cap

804: second bump

91: The first support frame

92: second support frame

93: first axis

94: second axis

[Figure 1] is a schematic diagram of the three-dimensional appearance of the preferred embodiment of this creation when installed on the sides of two support frames.

[Figure 2] is an exploded view of the components of the preferred embodiment of this creation.

[Figure 3] is a top view of the preferred embodiment of this creation when it is installed on the sides of two support frames.

[Fig. 4] is a cross-sectional view of A-A' in Fig. 3.

[Figure 5] is a B-B' sectional view of Figure 3.

[Fig. 6] is the C-C' cross-sectional view of Fig. 3.

[Figure 7] is a schematic cross-sectional view of the preferred embodiment of this creation when it is half unfolded.

[Figure 8] is a schematic cross-sectional view of the preferred embodiment of this creation when it is half unfolded.

[Figure 9] is a schematic cross-sectional view of the preferred embodiment of this creation when closed.

[Figure 10] is a schematic cross-sectional view of the preferred embodiment of this creation when closed.

[Figure 11] is a schematic diagram of the three-dimensional appearance of the preferred embodiment of this creation when it is closed.

Please refer to Figures 1 to 6, which is a preferred embodiment of the creative split hinge structure 1, which mainly includes a base body 2, a first rotating part 3, a second rotating part 4, and a first torsion bar 5. A second torsion rod 6, a gear set 7, a first torsion positioning member 8 and a second torsion positioning member 80. The first connecting portion 31 of the first rotating member 3 is connected to the side of the first support frame 91 of the display of an electronic device, and the second connecting portion 41 of the second rotating member 4 is connected to the second support of the base of the electronic device. On the side of the frame 92, when the first rotating member 3 and the second rotating member 4 respectively rotate relative to the base 2 as the axis, the display and the base are relatively flipped. When implemented, the first connection of the first rotating member 3 The portion 31 and the second connecting portion 41 of the second rotating member 4 can also be respectively connected to the sides of the two parallel first support frame 91 and the second support frame 92 of the dual touch screen electronic device.

The bottom of the base 2 is an arc-shaped surface, and the top of the base 2 is a rectangular plane. The base 2 includes a first base 21 and a second base 22. Wherein, one end of the first base 21 forms a first side surface 211; the top two sides of the first base 21 respectively form a level downward, and the two levels are respectively used as the first limiting portion 212 and the second limiting portion部213. The top of the first base 21 further has a set of first bumps 23 with opposite end faces and a set of second bumps 24 with opposite end faces. There is a first gap 231 between the two first bumps 23, and two A first arc-shaped groove 215 is formed between the first protrusion 23 and a first arc-shaped surface 214 of the first base 21, and the first arc-shaped groove 215 is an arc-shaped groove with an inferior arcuate cross section. There is a second interval 241 between the two second protrusions 24, a second arc-shaped groove 217 is formed between the two second protrusions 24 and a second arc-shaped surface 216 of the first base 21. The two arc-shaped grooves 217 are arc-shaped grooves with inferior arcuate cross-sections, and the second arc-shaped grooves 217 and the first arc-shaped grooves 215 are spaced and juxtaposed.

The second base 22 is roughly in a flat T-shape, including a straight portion 221 and a horizontal 222, one end of the straight portion 221 overlaps to connect the other end of the first base 21, the straight portion 221 has a positioning groove 223 transversely penetrating; and one end of the transverse portion 222 forms a second side surface 224, The side surface 224 and the first side surface 211 are opposite to the two ends of the base 2, and the two ends of the transverse portion 222 are spaced apart and pass through a first shaft hole 225 and a second shaft hole 226 of the second side surface 224.

The first rotating member 3 includes a flat-plate-shaped first connecting portion 31 and a first arc-shaped portion 32 extending away from one end of the first connecting portion 31. The plate surface of the first connecting portion 31 has perforations to lock and connect the first connecting portion 31. A support frame 91, one side of the first connecting portion 31 has two first lugs (311, 311') parallel to each other, and there is a slot between the two first lugs (311, 311'), and the slot serves as The first limiting slot 312. After the two lead screws respectively pass through the first limiting groove 312, their headed ends are respectively screwed on the first lugs 311, so that both ends of the two lead screws are respectively connected to the two first lugs (311, 311). '), in implementation, the lead screw serves as the first guide rod 313. One side of the first connecting portion 31 perpendicular to the extending direction of the two first lugs (311, 311') is provided with a first pressing portion 314, and the first pressing portion 314 and the first limiting portion 212 have opposite shapes, so that When the first pressing portion 314 presses down and is positioned above the first limiting portion 212, the first support frame 91 and the second support frame 92 are fully expanded into a plane shape without being overturned backwards.

The first arc-shaped portion 32 includes a first arc-shaped plate 321 and a first arc-shaped convex portion 322. The first arc-shaped plate 321 is an arc-shaped plate with an inferior arc cross-section, and the first arc-shaped plate 321 is inserted And is confined in the first arc-shaped groove 215; and the first arc-shaped protrusion 322 is formed by protruding inward from the middle section of the inner arc surface of the first arc-shaped plate 321. When the first arc-shaped plate 321 can be opposed to When the arc-shaped swing is limited to the first arc-shaped slot 215, the first arc convex portion 322 is limited to the first gap 231.

The second rotating member 4 and the first rotating member 3 are disposed on opposite sides of the base body 2 corresponding to the second rotating member 4. The second rotating member 4 includes a flat plate-shaped second connecting portion 41 and one end of the second connecting portion 41 The second arc-shaped portion 42 extends away from the outside. The plate surface of the second connecting portion 41 has perforations to lock and connect the second supporting frame 92. One side of the second connecting portion 41 has two second lugs parallel to each other ( 411,411'), there is a slot between the two second lugs (411,411'), and the slot serves as the second limiting slot 412. After the two lead screws respectively pass through the second limiting groove 412, their headed ends are respectively screwed on the second lugs 411, so that the two ends of the two lead screws are respectively connected to the two second lugs (411, 411) '), in implementation, the lead screw serves as the second guide rod 413. The second connecting portion 41 is provided with a second pressing portion 414 on one side perpendicular to the extending direction of the two second lugs (411, 411'), and the second pressing portion 414 and the second limiting portion 213 have opposite shapes, thereby When the second pressing portion 414 is pressed downward and positioned above the second limiting portion 413, the first support frame 91 and the second support frame 92 are fully expanded into a plane shape without being overturned backwards.

The second arc-shaped portion 42 includes a second arc-shaped plate 421 and a second arc-shaped convex portion 422. The second arc-shaped plate 421 is an arc-shaped plate with an inferior arc cross-section, and the second arc-shaped plate 421 is inserted And is confined in the second arc-shaped groove 217; and the second arc-shaped protrusion 422 is formed by protruding inward from the middle section of the inner arc surface of the second arc-shaped plate 421, when the second arc-shaped plate 421 can be opposed to When the arc swing is limited to the second arc slot 217, the second arc convex portion 422 is limited to the second gap 241.

The first torsion bar 5 and the second torsion bar 6 are long rods, respectively. The first torsion bar 5 and the second torsion bar 6 are symmetrical to each other, and are respectively adjacent to one side of the first connecting portion 31 and the second connecting portion 41. Both ends of the first torsion bar 5 have a first positioning hole 51 and a C-shaped clamping portion respectively. One end of a first shaft 93 passes through the first positioning hole 51 to connect one end of the first torsion bar 5, and C The C-shaped clamping portion is sleeved with a first support rod 53 to generate rotational friction torque, and the C-shaped clamping portion serves as the first friction torque portion 52. The first rod 53 has two radially penetrating through holes, and the through holes serve as the first guide portion 531; when the two first guide rods 313 respectively pass through the two first guide portions in a relatively slidable manner After 531, you can When one end of the first torsion rod 5 rotates synchronously with the first shaft 93, the first support rod 53 is allowed to slide smoothly and stably on the two first guide rods 313 back and forth.

The two ends of the second torsion rod 6 respectively have a second positioning hole 61 and a C-shaped clamping part. One end of a second shaft 94 passes through the second positioning hole 61 to connect one end of the second torsion rod 6, and C The C-shaped clamping portion is sleeved with a second supporting rod 63 to generate rotational friction torque, and the C-shaped clamping portion serves as the second friction torque portion 62. In addition, the second support rod 63 has two radially penetrating through holes, which serve as the second guide portion 631; the two second guide rods 413 respectively pass through the two second guides in a relatively slidable manner. After the portion 631, when one end of the second torsion rod 6 rotates synchronously with the second shaft 94, the second support rod 63 can slide smoothly and stably on the two second guide rods 413 back and forth.

The gear set 7 includes a first gear 71, an intermediate gear 72, and a second gear 73 that are sequentially and adjacently toothed. The first gear 71 is axially connected to the first shaft 93, and the other end of the first shaft 93 passes through the second base. The first shaft hole 225 of the seat 22 is connected to the seat body 2; the intermediate gear 72 is pivotally connected to the positioning groove 223; the second gear 73 is axially connected to the second shaft 94, and the other end of the second shaft 94 passes through the second shaft The second shaft hole 226 of the base 22 is positioned on the base 2 for connection. After the first shaft 93 and the second shaft 94 pass through the first shaft hole 225 and the second shaft hole 226, respectively, the first torsion positioning member 8 and the second torsion positioning member 80 are respectively connected.

The first torsion positioning member 8 includes a plurality of first concave-convex rings 81, a plurality of first elastic sheets 82, and a first cap 83 arranged in sequence in the axial direction; and the second torsion positioning member 80 includes a plurality of second concave-convex rings 801, a plurality of second elastic sheets 802 and a second cap 803, so that after the first shaft 93 and the second shaft 94 are respectively sleeved, the first cap 83 and the second cap 803 are respectively locked and fixed to the The other end of the one shaft 93 and the other end of the second shaft 94; and the first concave-convex ring 81 and the second concave-convex ring 801 are pressed against the first concave-convex portion 84 and the second concave-convex portion 804 of each corresponding surface, respectively.

With this, as shown in Figure 2, Figure 7 ~ Figure 11, the display is relative to the base or dual When the two parallel support frames of the touch screen electronic device are turned to closed or fully expanded at an angle of about 180 degrees, the first gear 71 and the second gear 73 can be reversed through the linkage of the gears of the gear set 7 To rotate, and synchronously drive one end of the first torsion rod 5, one end of the first shaft 93 and the second torsion rod 6, and the second shaft 94 to synchronously move; let the first support rod 53 and the second support rod 63 be in the first The limiting groove 312 and the second limiting groove 412 move inside; and the first friction torsion portion 52 of the first torsion bar 5 and the second friction torsion portion 62 of the second torsion bar 6 are connected to the first support rod 53, the second Synchronous rotation and friction between the two support rods 63 to generate torque, which can stabilize the torque at each rotation angle within the preset range, thereby enabling the display and the base or two parallel support frames of the dual touch screen electronic device It can rotate relatively stably, and can freely stop at a certain angle when rotating. Furthermore, by increasing or decreasing the number of the first elastic piece 82 and the second elastic piece 802, and the first cap 83, the second cap 803 and the other end of the second shaft 93 and the other end of the second shaft 94 The mutual locking of one end can adjust the force of the first concave-convex ring 81 and the second concave-convex ring 801 against the first concave-convex portion 84 and the second concave-convex portion 804, respectively, so as to achieve another torsion effect.

In summary, this creation can not only generate torsion through the synchronous rotational friction between the two struts and the two friction torsion parts of the two torsion bars during the rotation of the first gear and the second gear, but also During the rotation of the first gear and the second gear, the first concave-convex ring and the second concave-convex ring can press against the first concave-convex part and the second concave-convex part respectively to achieve a double torsion effect, and even adjust the first elasticity separately The output of different torsion forces can be further adjusted when the number of the second elastic piece and the second elastic piece. In this way, during the inversion process of the display relative to the base or the two parallel support frames of the dual touch screen electronic device, the generated rotational torque is dispersed, so that the torque output is more stable and uniform, and at the same time, rotational positioning is realized. Since the two support rods are connected to a set of parallel guide rods in a relatively sliding manner, the two support rods can slide back and forth more stably. Shift to increase the smoothness of use and extend the service life of components. Furthermore, through the above-mentioned structural design, the overall thickness can be effectively reduced to facilitate the design, and the overall light and thin market demand can be achieved.

Although this creation has disclosed preferred specific embodiments for achieving the above-mentioned purpose, it is not intended to limit the structural features of this creation. Any person with ordinary knowledge in the technical field should know that under the technical spirit of this creation, any easy thinking The changes or modifications are possible, and they are all covered by the scope of patent application for this creation.

2: seat body

3: The first rotating part

31: The first connection part

4: The second rotating part

41: The second connecting part

91: The first support frame

92: second support frame

Claims (10)

A split hinge structure, which includes: A seat body having a first side surface and a second side surface opposite to each other, and a first arc-shaped groove and a second arc-shaped groove are arranged in parallel between the first side surface and the second side surface; A first rotating member, comprising a first connecting portion and a first arc-shaped portion, the first connecting portion is connected to a first support frame, one side of the first connecting portion has at least one first guide rod, the The first arc-shaped portion is confined in the first arc-shaped slot in a manner capable of swinging relative to the arc; A second rotating member, which includes a second connecting portion and a second arc-shaped portion, the second connecting portion is connected to a second supporting frame, one side of the second connecting portion has at least one second guide rod, the The second arc-shaped portion is confined in the second arc-shaped slot in a manner capable of swinging relative to the arc; A first torsion bar adjacent to one side of the first connecting portion, one end of the first torsion bar has a first friction torsion portion, the first friction torsion portion is sleeved with a first strut for generating rotational friction Torsion, the first support rod has at least one first guiding part, and the at least one first guiding part is correspondingly connected to the at least one first guiding rod in a relatively slidable manner; A second torsion bar symmetrical to the first torsion bar and adjacent to one side of the second connecting portion, one end of the second torsion bar has a second friction torsion portion, and the second friction torsion portion is sleeved A second support rod for generating rotational friction torsion, the second support rod has at least one second guiding part, and the at least one second guiding part is correspondingly connected to the at least one second guiding rod in a relatively slidable manner; as well as A gear set comprising a first gear, an intermediate gear and a second gear that are sequentially adjacently toothed, the first gear is connected to a first shaft, and one end of the first shaft is connected to the first torsion bar The other end of the first shaft is connected and positioned on the base; the second gear shaft is connected to a first shaft Two shafts, one end of the second shaft is connected to the other end of the second torsion bar, and the other end of the second shaft is connected and positioned on the base. For example, the split hinge structure of claim 1, wherein the base includes a first base and a second base, and the first base has the first side surface and the first arc-shaped groove and the first arc-shaped groove juxtaposed with the interval. Two arc-shaped grooves; the second base has the second side surface, and the second side surface has a first shaft hole and a second shaft hole for respectively connecting and positioning the first shaft and the second shaft. For example, the split hinge structure of claim 1, wherein one side of the first connecting portion has two first lugs parallel to each other, and there is a first limiting groove between the two first lugs, and the at least one The first guide rod passes through the first limiting groove, and two ends of the at least one first guide rod are respectively connected to the two first lugs. For example, the split hinge structure of claim 1, wherein one side of the second connecting portion has two second lugs parallel to each other, and there is a second limiting groove between the two second lugs, and the at least one The second guide rod passes through the second limiting groove, and two ends of the at least one second guide rod are respectively connected to the two second lugs. Such as the split hinge structure of claim 1, wherein the first guide portion is a through hole radially penetrating the first support rod for the first guide rod to pass through in a relatively slidable manner; the second guide The part system is a perforation penetrating the second support rod radially for the second guide rod to pass through in a relatively slidable manner. For example, the split hinge structure of claim 1, wherein the top of the seat body further has a set of first protrusions with opposite end faces, and there is a first interval between the set of first protrusions, and the set of first protrusions is The first arc-shaped groove is formed between a first arc-shaped surface of the seat body; and the first arc-shaped portion includes a first arc-shaped plate and a first arc-shaped convex portion, and the first arc-shaped plate can The relative arc swing is limited to the first arc groove, and the first arc convex portion is limited to the first interval. For example, the split hinge structure of claim 1 or 6, wherein the top of the seat body further has A set of second protrusions with opposite end faces, a second gap is formed between the set of second protrusions, and the second arc-shaped groove is formed between the set of second protrusions and a second arc-shaped surface of the seat body ; And the second arc-shaped portion includes a second arc-shaped plate and a second arc-shaped convex portion, the second arc-shaped plate is limited in the second arc-shaped groove in a relatively arc-shaped swing, the first The two arc convex portions are limited to be located in the second interval. For example, the split hinge structure of claim 1, wherein both sides of the top of the seat body further have a first limiting portion and a second limiting portion, and one side of the first connecting portion has a first pressing portion, The first pressing portion presses down to position the first limiting portion, one side of the second connecting portion has a second pressing portion, and the second pressing portion presses down to position the second limiting portion unit. For example, the split hinge structure of claim 1, wherein after the first shaft and the second shaft respectively pass through the base, a first torsion positioning member and a second torsion positioning member are respectively connected; the first torsion positioning The component includes a plurality of first elastic pieces and a first cap, and the second torsion positioning component includes a plurality of second elastic pieces and a second cap for sleeved and fixed the first shaft and the second shaft respectively. For example, the split hinge structure of claim 9, wherein the first torsion positioning member further includes at least one first concave-convex ring, and the second torsion positioning member further includes at least one second concave-convex ring for socketing the first shaft and The second axis.

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