CN116263181A - Shaft components and end equipment - Google Patents

a

1; a

11; a

12; a

13; a second through

14; a

15; a fifth through

151; a

16; a

17; a cambered

18;

a

2; a

21; a

211; a

212; a

22; a

23; a

231; a

232; a

233; a

234; a

235; a

236; a

237; a second connecting

24;

241; a

25; a

26; a

27; a

28;

a

3; a

31; a

311; a first connecting

32; a first arc-

321;

4; a

41; a

42;

a locking assembly 5; a

51; a

511; a

512; a first via 513; a third through

514; a second

515; a

516; a

52; a

521; a first limiting

522; a

53; a

531; a

532; a

533; a

534; a fourth through

535; a

54; an

55;

a

6; a

7; a

71; a

72; a

8.

Referring to fig. 1 to 11, a

100 of an embodiment of the present invention includes a

1, a

2, a

3, and a

4. The

2 is rotatably connected with the

1, the

2 can swing around the

1, a sliding

25 is formed in the

2, and the

2 can be connected with other parts except the

100 to realize installation and fixation of the

100. The

3 is rotatably connected with the

2, the

3 comprises a

31 and a first connecting

32 which are connected, a first arc-shaped

321 is formed in the first connecting

32, and the

31 is used for supporting the

8 to keep the

8 flat. The supporting

3 may be made of a light material such as plastic to reduce its own weight, and at this time, the supporting

3 may be made by injection molding, so as to omit a connection step between the supporting

31 and the

32, thereby realizing rapid assembly of the

100. One end of the connecting

4 is rotatably connected with the

1, and the other end of the connecting

4 is slidably matched in the first arc-shaped

321 and the sliding

25.

When the

2 rotates around the

1, the

2 drives the connecting

4 to rotate around the

1, in the process, one end of the connecting

4 simultaneously slides in the sliding

25 and the first arc-shaped

321, and the supporting

3 is pulled to rotate around the

2 when the connecting

4 slides in the sliding

25 due to the fact that the supporting

3 is rotationally connected with the

2.

Compared with the related art, the

100 of the embodiment of the invention has better reliability, simpler structure and small occupied space.

In some embodiments, the

2 includes a rotating

21, a

22, a

23, and a

24. The

21 is rotatably connected with the

1, so that the

2 can swing around the

21, the

21 is connected with the first meshing

22 and is arranged side by side, the first guiding

23 is rotatably connected with the supporting

3, the sliding

25 is positioned on the first guiding

23, one end of the second connecting

24 is connected with the first meshing

22, and the other end is connected with the first guiding

23.

As shown in fig. 7, the rotating

21 is connected to the first engaging

22, the

23 is located on the right side of the rotating

21 and the first engaging

22, and the

23 is connected to the first engaging

22 through the second connecting

24. Referring to fig. 3 and 5, one end of the connecting

4 has a

41, the other end of the connecting

4 has a

42, the

41 and the

42 are parallel to each other, and the

41 and the

42 are both rotatably connected with the connecting

4. As shown in fig. 3 to 5, both ends of the

41 are connected with the

1 to realize rotational connection between the

4 and the

1, and the

42 is simultaneously inserted into the first arc-shaped

321 and the

25, and the

42 can slide in the

25 and the first arc-shaped

321.

In some embodiments, the

1 is provided with a

11, the

11 is internally provided with a

12, at least part of the outer circumferential surface of the

12 is an arc surface, the outer circumferential surface and the inner wall surface of the

21 are arc surfaces, and the

21 is rotatably matched between the

12 and the

11.

As shown in fig. 6, four

11 with the same size are formed in the

1, the bottom surface of each

11 is an arc surface, and the axis corresponding to the arc surface of each

11 is parallel to the

41; wherein the axes of the two

11 are collinear, and a

16 is provided between the two

11; the axes of the other two

11 are collinear, and a

16 is likewise provided between the two

11.

A

12 is disposed above each

11, the

12 is fixedly connected to the above-mentioned

16, and the bottom surface of the

12 is an arc surface. The

16 and the

12 connected to the

16 are provided with a

17, and the

17 penetrates the

16 and the

12 connected to the

16, and the longitudinal direction of the

17 is parallel to the

41. The rotating

21 includes a

211 and an adapting

212, the adapting

212 is disposed at two ends of the

211, the

211 is disposed in the

17 and rotatable in the

17, and the adapting

212 is adapted to be fitted between the

11 and the

12.

In some embodiments, the first guiding

23 is provided with a

234, the

234 is provided on two opposite sides of the sliding

25, the supporting

31 is provided with an arc-shaped second guiding

311, and the

311 is rotatably connected with the

234.

Fig. 4 is a schematic view of the

3 after being detached from the

2, as shown in fig. 4 and 7, the front end and the rear end of the first guiding

23 are both provided with a

234, the

311 is installed in the

234, and the

3 can rotate around the

234.

In some embodiments, the

234 is provided with a

237, an outer circumferential surface of the

237 is at least partially an arc surface, and the

311 is rotatably fitted between the

237 and the

234.

As shown in fig. 7, in order to realize the rotational connection between the

311 and the

234, a

237 is provided above the

234, the bottom of the

237 is an arc surface, an arc-shaped groove is formed between the

237 and the

234, the

311 is an arc-shaped plate, and the

311 is inserted between the

237 and the

234 and is rotatable between the

237 and the

234.

In some embodiments, the first guiding

23 includes a

231, a

232 and a

233 connected in sequence, where the

231 and the

233 are arranged side by side and at a distance, the

231 is connected to the other end of the second connecting

24, and the

232 is located on a side of the

231 away from the second connecting

24; the

231 and the

233 are each provided with a

234 on a side thereof remote from the

232, and the

237 extends to the

234 along the

232, and a sidewall of the

237 is spaced apart from a sidewall of the

234 to accommodate the

311.

As shown in fig. 7, the

231, the

232 and the

233 are integrally connected, the left end of the

231 is connected to the right end of the second connecting

24, the

232 and the rotating

21 are both located at the rear side of the second connecting

24, the

234 are provided at the front end of the

231 and the rear end of the

233, and the

237 is fixedly connected to the

232. The

25 is formed on an end surface of the

233 opposite to the

231, and one end of the

4 having the

42 is disposed between the

231 and the

232, and the first connecting

32 is disposed between the

4 and the

233.

As shown in fig. 3, at this time, the

2 and the

1 are in the same plane, the upper end surface of the

31 is flush with the upper end of the

1, and the

31 is used for supporting the

8. In fig. 3, the

2 on the right side of the

1 rotates counterclockwise around the

41, the

2 on the left side of the bracket body rotates clockwise around the

41, and during the process of rotating the

2 around the

1, the

42 slides in the

25 and the first arc-shaped

321 at the same time, and the

42 gradually approaches the

1; at the same time, the

3 rotates about the

234 by a certain angle under the action of the

42. In fig. 3, the

2 located at the right side of the frame and the

2 located at the left side of the frame can be rotated to the state shown in fig. 2 after being rotated 90 degrees. As shown in fig. 2, at this time, the two

2 are parallel to each other, and an included angle is formed between the two

31, and a space with a narrow upper part and a wide lower part is enclosed between the two

31 and the

1, and the space can be used for accommodating the bending area of the

8; since the lower portion of the space is wider, the

8 can be prevented from being excessively bent.

In some embodiments, the

1 is further provided with a supporting

13 for supporting the second connecting

24, the supporting

13 extends along the rotating

21 toward the first engaging

22, and a side of the second connecting

24 facing away from the first guiding

23 is provided with a

241 corresponding to the supporting

13. As shown in fig. 6, the front end of the

1 has two

13, and the two

13 are disposed at intervals so as to form a notch between the two

13, which is engaged with the

51. As shown in fig. 7, the

241 is formed at the bottom of the second connecting

24, and the

241 is configured to avoid interference between the

2 and the supporting

13 during rotation.

In some embodiments, the bearing surfaces of the

231 and the

233 are

235, and the bearing surfaces of the

231 and the

233 have first mounting

236 disposed thereon. As shown in fig. 7, the upper left ends of the

231 and the

233 are provided with

235, so that the thickness of the left ends of the

231 and the

233 is smaller than that of the right end, interference between the

31 and the

231 and the

233 during rotation is avoided by the

235, and the inclination angle of the

235 can be determined according to the included angle between the two

31 in fig. 2. First mounting

236 are provided in the

231 and the

233, and the first mounting

236 are used to fix the

2 to the

7.

In some embodiments, the

1 is further provided with a

15, one end of the connecting

4 is hinged to the

15, the

233 is spaced from the rotating

21 of the

2, two opposite sides of the

231 and the

233 are provided with a sliding

25, an opening of the sliding

25 faces the rotating

21 side of the

2, and the other end of the connecting

4 is slidably fitted in the sliding

25.

As shown in fig. 6, two

15 for hinge-connecting with the connecting

4 are provided at both left and right ends of the

1, and a fifth through

151 for the

41 to pass through is formed in the

15. As shown in fig. 7, a

25 is provided in each of the

231 and the

232, the

25 in the

231 is opposite to the

25 in the

232, one end of the aforementioned

42 is inserted into the

25 in the

231, the other end of the

42 is inserted into the

25 in the

232, and in order to facilitate the assembly of the

42, the left end of the

25 penetrates the

231 and the

233.

In some embodiments, the

2 further includes a locking assembly 5, the locking assembly 5 being coupled to the

1, the locking assembly 5 being rotatable with rotation of the

2 and locking the

2 in the flattened or closed position. The

2 is connected with the

1 through a locking assembly 5, and when the

2 and the

1 are in the flattened position shown in fig. 3 or the closed position shown in fig. 2, the locking assembly 5 applies a locking force to the

2, so that the

2 can be locked in the flattened position or the closed position.

In some embodiments, the locking assembly 5 comprises a driving engagement member rotatably provided on the

1 and in driving connection with the

2, and a damping engagement member connected to the driving engagement member and providing a locking force to the driving engagement member.

The transmission assembly comprises a first limiting

51 and a

52, one end of the

52 is rotationally connected with the

1, the

52 is in transmission connection with the

2, and the first limiting

51 is connected with the

52.

The damping member includes a

53, a

54, and an

55.

The

51 is provided with a

511. As shown in fig. 9, two

511 are provided on the front end surface of the

51, a space is provided between the two

511, and an

516 for being engaged with the

1 between the two

13 is provided on the rear end surface of the

51. Referring to fig. 4 and 5, after the first limiting

51 is assembled with the

1, one end of the supporting

13 away from the

15 is connected to the first limiting

51, and the inserting

516 is connected to the

1.

One end of the

52 is connected with the first limiting

51, and the

52 is rotatably connected with the

2. As shown in fig. 4, 5 and 8, the

52 penetrates through the first limiting

51, and the

52 can rotate relative to the first limiting

51, one end of the

52 is rotationally connected with the

22, and the

2 can drive the

52 to rotate when rotating.

The

53 is connected to the

52 and rotates with the

52, and the

53 is provided with a

531, where the

511 and the

531 cooperate to separate or approach the first limiting

51 and the

53 from each other during rotation of the

52. Referring to fig. 10, the

53 is sleeved on the

52 and rotates synchronously with the

52, and a

531 engaged with the

511 is provided at one end of the

53.

The second limiting

54 is disposed at one end of the

52 away from the first limiting

51, the

55 is sleeved outside the

52, one end of the

55 abuts against the

53, and the other end of the

55 abuts against the second limiting

54. As shown in fig. 8, the second limiting

54 is fixed to an end of the

52 away from the first limiting

51, and the

55 is sleeved on the outer side of the

52 and located between the first limiting

51 and the second limiting

54, where the

55 applies a pushing force to the

53. When the

2 rotates, the

53 rotates synchronously with the

52, the

531 on the

53 cooperates with the

511 on the first limiting

51, and under the elastic force of the

55, the

531 on the

53 is tightly attached to the

511 on the first limiting

51, and the

53 is far away from or near the first limiting

51.

When the

53 approaches the first limiting

51, the

511 and the

531 are engaged with each other, and a certain amount of force needs to be applied to the

2 to rotate the

2, and at this time, the

2 is correspondingly in the closed position shown in fig. 2 or the flattened position shown in fig. 3, so that locking of the

2 in the flattened position and the closed position is achieved. When the

53 is far away from the first limiting

51, the

511 and the

531 contact each other, and at this time, the

2 can be rotated without applying a large force to the

2, and the

2 is located at a position between the flattened position and the closed position, so as to ensure that the

2 can be easily converted from the flattened position to the closed position.

In some embodiments, the

1 is provided with a second through

14, and an end of the

52 adjacent to the

1 is rotatably fitted in the second through

14. As shown in fig. 6, two second through

14 are provided at the front end of the

1, the distance between the two second through

14 is equal to the distance between the two

511, and one end of the

52 is inserted into the second through

14 and can rotate in the second through

14, thereby realizing the limit of the end of the

52 and effectively preventing the

52 from shaking.

In some embodiments, one end of the

52 is provided with a

521, and the

22 of the

2 is engaged with the

521. As shown in fig. 11, the second

521 is fixedly connected with the

52, the second

521 rotates synchronously with the

52, and the first engaging

22 engages with the second

521 to realize transmission between the

2 and the

52. When the

2 is rotating, the

52 rotates together with the

2. The second

521 may be a gear, and the first engaging

22 is provided with teeth matching the second

521.

In some embodiments, the

52 is provided with a first limiting

522, the

53 is sleeved on the

52, and the

53 is provided with a second limiting

532 corresponding to the first limiting

522, and the first limiting

522 cooperates with the second limiting

532 to achieve circumferential limitation of the

53 on the

52. As shown in fig. 11, a cut surface is provided along the longitudinal direction of the

52 to form the

522 described above. As shown in fig. 10, a fourth through

535 is formed in the

53, the

52 is inserted into the fourth through

535, and the first limiting

522 and the second limiting

532 cooperate with each other to prevent the

53 from rotating relative to the

52, so as to ensure that the

53 rotates synchronously with the

52.

In some embodiments, the first limiting

51 is provided with a

512, a first through

513 and a

511 are formed at a bottom of the

512, the

52 is fitted in the first through

513, the

511 is disposed at a peripheral side of the first through

513, one end of the

53 adjacent to the first limiting

51 is provided with a

531, and the

531 is slidably fitted with the

511. As shown in fig. 9, two

512 are formed on the front end surface of the first limiting

51, the positions of the

512 correspond to the positions of the

511 one by one, and the first through

513 penetrate through the front and rear end surfaces of the first limiting

51 and are used for the

52 to penetrate through.

In some embodiments, the cross-sectional area of the

511 gradually increases in the direction of the notch of the

512 toward the groove bottom; the

53 has a

533 and a

534 in the length direction thereof, and the cross-sectional area of the

531 gradually increases in the direction from the

533 to the

534 of the

53. In practice, the surfaces of the

511 and the

531 may be designed to be smoothly curved.

In some embodiments, the first limiting

51 is further provided with a third through

514 and a second arc-shaped

515, the side of the first engaging

22 away from the rotating

21 is provided with a

26 and a

27, the

26 is rotatably matched in the third through

514, and the

27 is slidably matched in the second arc-shaped

515. The second arc-shaped

515 is in a circular arc shape, the center of the second arc-shaped groove coincides with the center of the third through

514, and when the first plug-in

26 rotates in the third through

514, the second plug-in

27 slides in the second arc-shaped

515, and the swing angle range of the

2 can be limited through the second arc-shaped

515.

Wherein the central angle of the

515 is greater than or equal to 90 degrees. When the central angle corresponding to the second arc-shaped

515 is equal to 90 degrees, the rotatable angle of the

2 relative to the

1 is also 90 degrees, and when the

27 is positioned at the lowest end of the second arc-shaped

515, the

2 is positioned at a flattening position; when the

27 is at the uppermost end of the second

515, the

2 is in the closed position. It should be noted that, the second arc-shaped

515 is mainly used to limit the swing range of the

2, and when different requirements are applied to the swing range of the

2, the central angle corresponding to the second arc-shaped

515 may be increased or decreased accordingly.

In some embodiments, at least a portion of the upper surface of the

1 and at least a portion of the upper surface of the first limiting

51 are

18, and an extension surface of the

18 of the upper surface of the

1 and an extension surface of the

18 of the upper surface of the first limiting

51 overlap. As shown in fig. 6, the top of the

1 and the top of the first limiting

51 are both provided with arc surfaces 18, and the arc of the

18 at the top of the

1 is equal to the arc of the

18 at the top of the first limiting

51. As shown in fig. 2, when the

2 swings to the state shown in the figure, the bottom of the space formed between the

31 and the

1 is arc-shaped, and the shape of the space can be matched with the bending shape of the

8.

As shown in fig. 7, the rotating

21 and one end of the first engaging

22 adjacent to the first guiding

23 are provided with a

28, and when the

2 rotates to the state shown in fig. 2, the

28 on the

2 is tangent to the

18 on the

1 and the first limiting

51, so that the

2 is prevented from interfering with the

8, and abrasion of the

8 is avoided.

Referring to fig. 1 to 4, the terminal device of the embodiment of the present invention includes a

6, a

7, a

8, and the above-described

100. The

100 is arranged in the

6, and the

6 is used for preventing the

100 from being exposed in the rotation process of the terminal equipment, protecting the

100 and improving the aesthetic feeling of the terminal equipment; the

7 is fixedly connected with the

2, and the

2 and the

7 synchronously rotate when the

7 rotates; the

8 is a flexible screen and is laid on the

7, the

3 being located on the back surface of the

8. When the terminal equipment is in a flattened state, the back surface of the

8 is in contact with the

31, and the support of the

8 is realized by arranging the

31, so that the middle part of the

8 is prevented from collapsing when the terminal equipment is in the flattened state, and the flatness of the

8 is maintained.

The

7 includes a

71 and a

72 having the same size, the two

100 are disposed between the

71 and the

72, the two

2 on the

100 are respectively fixed to the

71 and the

72, the shielding

6 is similarly disposed between the

71 and the

72, and both ends of the shielding

6 are respectively fixed to bottoms of the

1 on the two

100. When the terminal equipment is in a flattened state, the

6 is hidden in the space between the

1 and the

7, and the bending part of the

8 is approximately in a water drop shape at the moment due to the limitation of the supporting

31, so that the excessive bending of the

8 is effectively avoided, and the damage risk of the

8 is reduced.

In summary, the

100 of the embodiment of the present application may be used as a hinge of a folding terminal device, and the

100 has the advantages of simple assembly, high reliability, small occupied space and good synchronization compared with the hinge structure in the related art. The terminal equipment applying the

100 can effectively save the space inside the terminal equipment, is favorable for the light and thin development of the terminal equipment, and meanwhile, the

100 can realize the locking and holding of the terminal equipment in a flattened/folded state, so that the terminal equipment has damping handfeel in the unfolding and folding processes.

1. A rotary shaft component, comprising:

a bracket;

the swing arm is rotationally connected with the bracket, and a sliding groove is formed in the swing arm;

the support piece is rotationally connected with the swing arm and comprises a support piece body and a first connecting part which are connected, and a first arc-shaped groove is formed in the first connecting part;

and one end of the connecting rod is rotationally connected with the bracket, and the other end of the connecting rod is slidably matched in the first arc-shaped groove and the sliding groove.

2. The spindle assembly of claim 1, wherein the swing arm comprises:

the rotating part is rotationally connected with the bracket;

the rotating part is connected with the first meshing part and is arranged side by side;

the first guide part is rotationally connected with the supporting piece, and the sliding groove is positioned on the first guide part;

and one end of the second connecting part is connected with the first meshing part, and the other end of the second connecting part is connected with the first guiding part.

3. The rotating shaft component according to claim 2, wherein a first shaft groove is formed in the support, a first stopper is disposed in the first shaft groove, at least a portion of an outer circumferential surface of the first stopper is an arc surface, both the outer circumferential surface and an inner wall surface of the rotating portion are arc surfaces, and the rotating portion is rotatably fitted between the first stopper and the first shaft groove.

4. The rotating shaft component according to claim 2, wherein the first guiding portion is provided with a second shaft groove, the second shaft groove is provided on two opposite sides of the sliding groove, the supporting member body is provided with an arc-shaped second guiding portion, and the second guiding portion is rotatably connected with the second shaft groove.

5. The rotating shaft component according to claim 4, wherein a second stopper is provided in the second shaft groove, an outer peripheral surface of the second stopper is at least partially an arc surface, and the second guide portion is rotatably fitted between the second stopper and the second shaft groove.

6. The rotating shaft component according to claim 2, wherein the bracket is further provided with a supporting portion for supporting the second connecting portion, the supporting portion extends in a direction from the rotating portion to the first engaging portion, and a notch corresponding to the supporting portion is provided on a side of the second connecting portion facing away from the first guiding portion.

7. The spindle assembly of claim 5, wherein the first guide comprises: the first part, the second part and the third part are connected in sequence, the first part and the third part are arranged side by side at intervals, the first part is connected with the other end of the second connecting part, and the second part is positioned on one side of the first part far away from the second connecting part;

the side of the first part and the side of the third part, which are far away from the second part, are respectively provided with a second shaft groove, the second stop piece extends to the second shaft groove along the second part, and the side wall of the second stop piece is arranged at intervals with the side wall of the second shaft groove so as to accommodate the second guide part.

8. The spindle assembly of claim 7 wherein the bearing surfaces of the first and third portions are beveled and the bearing surfaces of the first and third portions have first mounting holes disposed thereon.

9. The pivot assembly of claim 7 wherein the bracket is further provided with a hinge portion, one end of the link is hinged to the hinge portion, the third portion is spaced from the rotating portion of the swing arm, two opposite sides of the first portion and the third portion are provided with the sliding slot, an opening of the sliding slot faces the rotating portion side of the swing arm, and the other end of the link is slidably fitted in the sliding slot.

10. The pivot assembly of claim 2 further comprising a locking assembly coupled to the bracket, the locking assembly being rotatable with rotation of the swing arm and locking the swing arm in the flattened or closed position.

11. The spindle unit of claim 10, wherein the locking assembly comprises:

the transmission assembly is rotatably arranged on the bracket and is in transmission connection with the swing arm;

and the damping assembly is connected with the transmission assembly and provides locking force for the transmission assembly.

12. The spindle unit of claim 11, wherein the drive assembly comprises:

one end of the transmission piece is rotationally connected with the bracket, and the transmission piece is in transmission connection with the swing arm;

the first limiting piece is connected with the transmission piece.

13. The spindle unit of claim 12, wherein the damping assembly comprises:

the torsion piece is connected with the transmission piece and rotates along with the transmission piece, a first torsion part is arranged on the first limiting piece, a second torsion part is arranged on the torsion piece, and the first torsion part is matched with the second torsion part in the rotation process of the transmission piece so that the first limiting piece and the torsion piece are separated from or close to each other;

the second limiting piece is arranged at one end, far away from the first limiting piece, of the transmission piece;

the elastic piece is sleeved on the outer side of the transmission piece, one end of the elastic piece abuts against the torsion piece, and the other end of the elastic piece abuts against the second limiting piece.

14. The spindle assembly of claim 12 wherein a second through bore is provided in the bracket, the drive member being rotatably engaged in the second through bore adjacent one end of the bracket.

15. The rotating shaft component according to claim 12, wherein one end of the transmission member is provided with a second engagement portion, and the first engagement portion of the swing arm is engaged with the second engagement portion.

16. The rotating shaft component according to claim 13, wherein the transmission member is provided with a first limiting portion, the torque member is sleeved on the transmission member, the torque member is provided with a second limiting portion corresponding to the first limiting portion, and the first limiting portion and the second limiting portion cooperate to achieve circumferential limiting of the torque member on the transmission member.

17. The rotating shaft component according to claim 13, wherein a first groove is formed in the first limiting member, a first through hole and the first torsion portion are formed in a bottom of the first groove, the transmission member is fitted in the first through hole, the first torsion portion is formed on a circumferential side of the first through hole, a second torsion portion is formed at an end, adjacent to the first limiting member, of the torsion member, and the second torsion portion is slidably fitted with the first torsion portion.

18. The spindle unit of claim 17, wherein a cross-sectional area of the first torsion portion increases gradually in a direction from a notch of the first groove toward a groove bottom;

the torsion member has a first end and a second end in a length direction thereof, and a cross-sectional area of the second torsion portion gradually increases in a direction from the first end to the second end of the torsion member.

19. The rotating shaft component according to claim 13, wherein a third through hole and a second arc-shaped groove are further formed in the first limiting member, a first plug-in connector and a second plug-in connector are arranged on one side, away from the rotating portion, of the first engagement portion, the first plug-in connector is rotatably matched in the third through hole, and the second plug-in connector is slidably matched in the second arc-shaped groove.

20. The rotating shaft component of claim 19, wherein the second arcuate slot corresponds to a central angular angle greater than or equal to 90 degrees.

21. The spindle assembly of claim 12 wherein at least a portion of the upper surface of the bracket and at least a portion of the upper surface of the first stop are arcuate surfaces, and wherein the arcuate surface of the upper surface of the bracket extends over the arcuate surface of the upper surface of the first stop.

22. A terminal device, comprising: the spindle assembly of any one of claims 1-21.

23. The terminal device according to claim 22, characterized in that the terminal device further comprises:

the rotating shaft component is arranged in the shielding piece;

the shell is connected with the swing arm;

and the screen is connected with the shell, and the supporting piece is positioned on the back surface of the screen.