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CN-121025041-B - Rotating shaft mechanism and terminal equipment

CN121025041BCN 121025041 BCN121025041 BCN 121025041BCN-121025041-B

Abstract

The embodiment of the application relates to the technical field of terminal equipment, provides a rotating shaft mechanism and terminal equipment, and can solve the problem that the rotating shaft mechanism in the related art is poor in spring-open angle stability after a locking structure of the terminal equipment is unlocked. The rotating shaft mechanism comprises a base, a swing arm assembly, an elastic piece and a first cam structure, wherein the swing arm assembly comprises a bearing piece, a pair of swing arms and an even number of gears, the swing arms are respectively connected to the edges of two opposite sides of the base in a rotatable mode, the even number of gears are connected between the pair of swing arms in a transmission mode, the bearing piece is relatively fixed with the base along the circumferential direction of the gears, the elastic piece is used for applying elastic force to at least one of the bearing piece and the gears, the first cam structure is arranged between a first end face of the gears and the bearing piece and comprises a first protruding portion arranged on one of the bearing piece and the first end face, and a second protruding portion arranged on the other one of the bearing piece and the first end face. The application can be used for terminal equipment such as mobile phones and the like.

Inventors

  • LIN YANGMING
  • ZHENG YI
  • XIE TINGYU
  • XU HUAHUA

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260508
Application Date
20230216

Claims (12)

  1. 1. A spindle mechanism (100), characterized by comprising: the device comprises a base (1), a bearing piece (23), a swing arm (21) and an elastic piece (3); The swing arm (21) comprises a first swing arm and a second swing arm, the first swing arm and the second swing arm are rotatably connected to two sides of the base (1), and the first swing arm and the base (1) are rotatably connected through a first rotating shaft (15); the bearing piece (23), the swing arm (21) and the elastic piece (3) are sequentially arranged along a first direction, and the first direction is parallel to the axis direction of the first rotating shaft (15); a first cam surface is arranged at one end of the bearing piece (23) facing the swing arm (21), and a second cam surface is arranged at one end of the swing arm (21) facing the bearing piece (23); the first cam surface comprises a first convex part, a first connecting part, a first concave part, a second connecting part, a second convex part, a third connecting part and a second concave part which are arranged continuously along the circumferential direction of the first rotating shaft (15), wherein the first convex part and the second convex part are closer to the elastic piece (3) relative to the first concave part and the second concave part, and the surface of the first connecting part, the surface of the second connecting part and the surface of the third connecting part are not parallel to the first direction; The second cam surface includes a third lobe (42); when the rotating shaft mechanism (100) is in a folded state, the third convex part (42) is abutted with the surface of the first connecting part; When the rotating shaft mechanism (100) is in a unfolding state, the third convex part (42) is abutted with the surface of the first concave part; when the third protrusion moves along the first cam surface and in the direction of the first connection portion toward the first recess, the rotation shaft mechanism (100) moves from the folded state to the unfolded state.
  2. 2. The spindle mechanism (100) according to claim 1, wherein the spindle mechanism (100) further comprises a first friction member (61) and a second friction member (62); The first friction piece (61) is rotationally connected with the base (1), and the first friction piece (61) is connected with the swing arm (21) through a connecting piece (63) so that the first friction piece (61) and the swing arm (21) can synchronously rotate relative to the base (1); The second friction piece (62) is fixedly connected with the base (1) and is contacted with the first friction piece (61), and when the swing arm (21) rotates between the folded state and the unfolded state, the second friction piece (62) can rub against the first friction piece (61) so as to apply a rotation damping force to the swing arm (21).
  3. 3. The spindle mechanism (100) according to claim 2, wherein, The number of the first friction pieces (61) and the number of the second friction pieces (62) are multiple, the first friction pieces (61) comprise first sub friction pieces and second sub friction pieces, and the second friction pieces (62) comprise third sub friction pieces and fourth sub friction pieces; Along the first direction, the first sub friction piece, the third sub friction piece, the second sub friction piece and the fourth sub friction piece are sequentially arranged, and adjacent sub friction pieces are contacted.
  4. 4. The spindle mechanism (100) according to claim 2, wherein, The axis of rotation of the first friction piece (61) relative to the base (1) is the same as the axis of the first rotating shaft (15).
  5. 5. The spindle mechanism (100) according to any one of claims 1-4, wherein the third protrusion moves along the first cam surface between the first connection and the first recess and the swing arm moves in a first direction relative to the base (1) during transition of the spindle mechanism (100) between the folded state and the unfolded state.
  6. 6. The spindle mechanism (100) of any one of claims 1-4 wherein the first cam surface includes four lobes including the first lobe and the second lobe, the first lobe and the second lobe being adjacent.
  7. 7. The spindle mechanism (100) according to any one of claims 1 to 4, wherein a central angle between a surface of the first connecting portion and a surface of the third connecting portion in a circumferential direction of the first spindle (15) is 90 degrees from the first spindle (15).
  8. 8. The spindle mechanism (100) according to any one of claims 1 to 4, wherein, The inclination angle of the surface of the second connecting part relative to the first direction is larger than that of the surface of the first connecting part relative to the first direction; the inclination angle of the surface of the second connecting part relative to the first direction is larger than that of the surface of the third connecting part relative to the first direction.
  9. 9. The spindle mechanism (100) according to any one of claims 1-4, wherein a surface of the first connection portion is inclined at the same angle relative to the first direction as a surface of the third connection portion is inclined at the same angle relative to the first direction.
  10. 10. The spindle mechanism (100) according to any one of claims 1-4, wherein in a folded state of the spindle mechanism (100) without an external force, the third protrusion moves along the first cam surface in a direction of the first protrusion toward the second protrusion, causing the spindle mechanism (100) to expand.
  11. 11. The spindle mechanism (100) of any one of claims 1-4 wherein the first cam surface is part of the swing arm and the second cam surface is part of the carrier.
  12. 12. An electronic device, characterized by comprising a display screen (200), a housing, and a spindle mechanism (100) according to any one of claims 1 to 11, wherein the housing and the display screen (200) are stacked; The shell comprises a first shell and a second shell, wherein the first shell and the second shell are respectively positioned at two sides of the rotating shaft mechanism (100) and are movably connected through the rotating shaft mechanism (100); When the electronic equipment is in an unfolding state, the first shell, the rotating shaft mechanism (100) and the second shell are sequentially arranged along the direction that the first shell points to the second shell; The first shell, the rotating shaft mechanism (100) and the second shell form a supporting surface for supporting the display screen (200), the first swing arm is movably connected with the first shell, and the second swing arm is movably connected with the second shell.

Description

Rotating shaft mechanism and terminal equipment The present application is a divisional application, the application number of which is 202310185102.4, the application date of which is 2023, 02 and 16, the entire contents of which are incorporated herein by reference. Technical Field The present application relates to the field of terminal devices, and in particular, to a rotating shaft mechanism and a terminal device. Background With the development of technology, the morphology of the terminal device is greatly changed, and the terminal device such as a foldable mobile phone, a foldable tablet computer, a foldable wearable device and the like is gradually becoming an important development direction of the future intelligent terminal device. In order to enable the terminal device to remain in a folded state, avoiding its opening during transport or transport, designers often design locking structures on the terminal device to keep the terminal device in a folded state. When the terminal equipment needs to be used, the locking structure needs to be unlocked first and then opened for use. In order to facilitate the opening of the terminal equipment after the unlocking of the locking structure, one type of terminal equipment in the related art is provided with a torsion spring in the rotating shaft mechanism, the torsion spring deforms along with the movement of the rotating shaft mechanism to the folding position so as to store elastic potential energy, and the terminal equipment can spring for a certain angle under the action of the torsion spring after the unlocking of the locking structure. However, the torsion spring is larger in deformation amplitude in the process of moving the rotating shaft mechanism to the folding position, and the change amplitude of the reaction force received by the torsion spring is larger, so that the service life of the torsion spring can be influenced to a certain extent, and along with the increase of the folding and unfolding times of the terminal equipment, the elasticity of the torsion spring can be weakened, so that the stability of the shell pop-up angle of the terminal equipment is influenced. Disclosure of Invention The embodiment of the application provides a rotating shaft mechanism and terminal equipment, which are used for solving the problem that the rotating shaft mechanism in the related art is poor in spring-open angle stability after a locking structure of the terminal equipment is unlocked. In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: In a first aspect, an embodiment of the present application provides a rotation shaft mechanism, including a base, a swing arm assembly, an elastic member, and a first cam structure; the swing arm assembly comprises a bearing piece, a pair of swing arms and an even number of gears, wherein the swing arms are respectively and rotatably connected to the edges of two opposite sides of a base, the even number of gears are connected between the pair of swing arms in a transmission mode, so that each swing arm can synchronously rotate relative to the base between a folded position and an unfolded position, the bearing piece and the gears are arranged along the axial direction of the gears, the bearing piece is relatively fixed with the base along the circumferential direction of the gears, an elastic piece is used for applying elastic force to at least one of the bearing piece and the gears so that the bearing piece is close to the gears, a first cam structure is arranged between a first end face of the gears and the bearing piece and comprises a first protruding part arranged on one of the bearing piece and the first end face, and a second protruding part arranged on the other of the bearing piece and the first end face, the first protruding part comprises a first side face, when the swing arm is located at the folded position, the second protruding part is used for applying elastic force to at least one of the bearing piece and the gears, and the second protruding part can move relatively towards the opposite sides of the first side, and the first protruding part can move towards the opposite sides. In the rotating shaft mechanism provided by the embodiment of the application, the elastic piece applies elastic force to at least one of the bearing piece and the gear to enable the bearing piece to be close to the gear, so that the second protruding part can be abutted against the first side surface, in this way, in the process that the swing arm rotates from the folding position to the unfolding position, the deformation amplitude of the elastic piece is determined by the relative displacement of the first protruding part and the second protruding part along the axial direction of the gear, namely, the height of the first protruding part, and the problem that the deformation amplitude of the elastic piece is large can be avoided because the height of the first