Driving device, mounting mechanism thereof and camera equipment

Abstract

The invention belongs to the technical field of optical anti-vibration, and particularly relates to a driving device, a shaft mounting mechanism and camera equipment. The defects of unreasonable design and the like in the prior art are overcome. The shaft mounting mechanism of the driving device comprises a first frame, a second frame rotating around a first dimension shaft perpendicular to an optical axis is rotationally connected in the first frame, first shaft grooves allowing the first dimension shaft to be clamped therein are formed in the two opposite sides of the first frame respectively, the first dimension shaft is rotationally connected with the first shaft grooves, and the second frame is rotationally connected with the second shaft grooves. The first frame is provided with a first elastic pressing arm which elastically presses the peripheral face of the side, away from the groove bottom of the first shaft groove, of the first dimension shaft. The structure has the advantages that on the premise of ensuring the rotation stability of the shaft, the disassembly and assembly convenience is improved, and the efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of optical anti-shake, and in particular relates to a driving device and a mounting mechanism thereof and a camera device. Background Art

[0002] The lens drive has functions such as focus, anti-shake and tracking.

[0003] In the field of anti-shake and tracking, anti-shake and tracking are achieved by rotating back and forth around at least one dimensional axis. The rotating part is connected to a relatively fixed frame in the form of an axis, and there are many driving methods, such as motor drive, piezoelectric drive, and electromagnetic drive. For example, the Chinese patent application number CN202110931942.1 previously applied by our company provides a modular optical anti-shake system. It includes a fixed outer frame, an anti-shake middle frame, which is located in the fixed outer frame; the anti-shake middle frame and the fixed outer frame are rotatably connected and the anti-shake middle frame rotates around the X axis; the anti-shake inner frame is located in the anti-shake middle frame; the anti-shake inner frame and the anti-shake middle frame are rotatably connected and the anti-shake inner frame rotates around the Y axis; the motor drive method, especially the synergy of the stepping motor, worm gear and worm, solves the problem of small torque of the electromagnetic structure in the module anti-shake. At the same time, the worm gear structure has a self-locking characteristic, which can rotate more stably. Compared with the electromagnetic structure, the structure of the spring is reduced, and at the same time, a larger rotation angle can be obtained by using the stepper drive.

[0004] This solution can realize the anti-shake movement of multiple dimensional axes around the axis and realize the anti-shake movement at a large angle. Although it has many advantages as mentioned above, this solution has the following defects: for example, the two ends of the connecting shaft of the anti-shake inner frame and the anti-shake middle frame are inserted into the corresponding slots and relatively fixed to the bottom of the slots. When the anti-shake inner frame needs to be disassembled, the two ends of the connecting shaft need to be unfixed from the slots before the disassembly can be completed. When the shaft is fixed again after disassembly and maintenance, the two ends of the connecting shaft need to be rotationally fixed to the slots. The above operation method is quite cumbersome.

[0005] Secondly, with the above axis fixing method, it is difficult to achieve consistency in the fixed positions at both ends of the axis, which affects the rotational performance of anti-shake or tracking. Summary of the invention

[0006] The purpose of the present invention is to provide a driving device and its mounting mechanism and a camera device that can solve the above technical problems.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] The shaft mounting mechanism of the driving device includes a first frame, in which a second frame is rotatably connected and rotates around a first dimensional axis perpendicular to the optical axis. First shaft grooves for the first dimensional axis to be inserted are respectively provided on opposite sides of the first frame. The first dimensional axis and the first shaft groove are rotatably connected. A first elastic pressure arm is provided on the first frame and elastically presses the first dimensional axis on a circumferential surface away from the bottom of the first shaft groove.

[0009] In the shaft mounting mechanism of the above-mentioned driving device, the first elastic pressure arm extends from the notch of the first shaft groove and elastically presses on the circumferential surface of the first-dimensional shaft.

[0010] In the shaft mounting mechanism of the above-mentioned driving device, the first elastic pressure arm is located on either side of the length direction of the first shaft groove and elastically presses on the circumferential surface of the first-dimensional shaft.

[0011] In the shaft mounting mechanism of the above-mentioned driving device, the first elastic pressure arm is tangent to the circumferential surface of the first dimensional axis.

[0012] In the shaft mounting mechanism of the above-mentioned driving device, the first elastic pressure arm is any one of an inclined pressure arm and a parallel pressure arm parallel to the first dimensional axis, and the first elastic pressure arm elastically presses on the circumferential surface of the first dimensional axis.

[0013] In the shaft mounting mechanism of the above-mentioned driving device, in the axial projection of the first-dimensional shaft, the two first elastic pressure arms are distributed in an "X" shape or an "eight" shape.

[0014] In the shaft mounting mechanism of the above-mentioned driving device, the first elastic pressure arm is fixed to a fixing frame, and the fixing frame is fixed to the first frame.

[0015] In the shaft mounting mechanism of the above-mentioned driving device, a bearing is installed in the first shaft groove, the first dimensional shaft and the bearing are rotatably connected, and cylindrical parts protruding outward and sleeved on the first dimensional shaft are respectively provided on the opposite sides of the second frame, wherein the outer end face of one of the cylindrical parts is in contact with the inner end face of one of the bearings, and the outer end face of the other cylindrical part is spaced from the inner end face of the other bearing, the first elastic damping member is sleeved on the other cylindrical part, and the first elastic pressure arm is pressed on the circumferential surface of the bearing.

[0016] The present application also provides a method for installing a shaft of a drive device, the method comprising the following steps:

[0017] S1. Put the second frame into the first frame, and the first dimension axis arranged on the second frame enters the corresponding first axis groove on the first frame;

[0018] S2. Fix the first elastic pressure arm on the first frame, and the first elastic pressure arm elastically presses the circumference of the first dimensional axis away from the bottom of the first axis groove. The first dimensional axis rotates relative to the first axis groove and the first elastic pressure arm, and the axis installation is completed.

[0019] The present application also provides a driving device, the driving device comprising a shaft mounting mechanism of the driving device

[0020] The present application also provides a camera device, which includes the driving device.

[0021] Compared with the existing technology, the advantages of this application are:

[0022] The elastic compression of the two first elastic pressure arms can make the first dimension axis in the axis groove fixed in the same position, so as to ensure stability and accuracy during subsequent anti-shake or tracking rotation.

[0023] The two first elastic pressure arms make installation and disassembly of the first dimension axis more convenient, and can also meet the requirements of anti-shake or tracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the driving device provided by the present invention.

[0025] Figure 2 It is a schematic diagram of the top view of the structure of the driving device provided by the present invention.

[0026] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along line AA.

[0027] Figure 4 yes Figure 2 Schematic diagram of the cross-section structure along line BB.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the driving device provided by the present invention from another viewing angle.

[0029] Figure 6 yes Figure 5 Schematic diagram of the local explosion structure.

[0030] Figure 7 This is a schematic diagram of the first framework structure provided by the present invention.

[0031] Figure 8 It is a schematic diagram of a second framework structure provided by the present invention.

[0032] Fig. 9 It is a schematic diagram of a third framework structure provided by the present invention.

[0033] Fig.10 It is a structural schematic diagram of embodiment 3 provided by the present invention.

[0034] Fig.11 It is a schematic diagram of the structure of the camera device provided by the present invention.

[0035] Fig.12 It is a schematic diagram of the relative rotational motion state of two frames provided by the present invention.

[0036] Fig.13 It is a schematic diagram showing the relative rotational motion state of three frames of the driving device provided by the present invention.

[0037] In the figure, the first frame 1, the first dimensional axis 10, the first axis groove 11, the bearing 12, the second dimensional axis 13, the stroke increase limit groove 14, the first worm gear drive motor group 15, the second worm gear drive motor group 16, the abutment portion 17 at one end of the torsion spring arm, the abutment portion 18 at the other end of the torsion spring arm, the second frame 2, the cylindrical portion 20, the external protrusion 21, the limit stop block 22, the first elastic damping member 3, the first elastic pressure arm 4, the fixing frame 40, the third frame 5, and the second elastic damping member 6. DETAILED DESCRIPTION

[0038] The following are specific embodiments of the invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0039] Attached Figure 1 The Z axis in the figure is the optical axis, and the X axis and Y axis perpendicular to the Z axis can be understood as the first dimension axis 10 and the second dimension axis 13 respectively.

[0040] Embodiment 1

[0041] like Figure 1 and Figure 2 As shown, the shaft mounting mechanism of the driving device includes a first frame 1, and a second frame 2 is rotatably connected in the first frame 1 and rotates around a first dimensional axis 10 perpendicular to the optical axis. The driving method includes a stepper motor carrying a worm gear, and can also be a piezoelectric driving method. Preferably, the first dimensional axis 10 of this embodiment is two coaxially distributed first sub-axes.

[0042] The rotation of the second frame 2 achieves anti-shake or tracking purposes.

[0043] like Figure 5 and Figure 6As shown, first axis grooves 11 for the first dimensional axis 10 to be inserted are respectively provided on opposite sides of the first frame 1, the first dimensional axis 10 and the first axis groove 11 are rotatably connected, and a first elastic pressure arm 4 is elastically pressed on the circumference of the first dimensional axis 10 away from the bottom of the first axis groove 11 on the first frame 1. The first dimensional axis 10 rotates relative to the first axis groove 11 and the first elastic pressure arm 4, and one end of the first elastic pressure arm 4 is fixed to a fixing frame 40, and the fixing frame 40 is fixed on the first frame 1. The fixing frame 40 is a right-angle frame and is fixed to the first frame 1 by a plurality of fasteners.

[0044] In a preferred embodiment, the first elastic pressure arm 4 of this embodiment extends from the notch of the first shaft groove 11 and elastically presses on the circumference of the first dimension shaft 10, so as to further reduce the radial dimension of the frame.

[0045] The first shaft groove 11 is a U-shaped groove, and the setting of the first elastic pressure arm 4 enables the first dimensional shaft 10 to be elastically clamped after being inserted into the first shaft groove 11, thereby preventing the first dimensional shaft 10 from falling off the first shaft groove 11 or the first dimensional shaft 10 from being displaced in the groove depth direction of the first shaft groove 11. Secondly, an avoidance step is provided on one side groove wall of the first shaft groove 11, and the first elastic pressure arm 4 crosses the avoidance step to achieve elastic clamping.

[0046] The axial elastic force provided by the first elastic damping member 3 in this embodiment combined with the action of the first elastic pressure arm 4 can enable the first dimensional axis 10 to stably rotate in the first axis groove 11 without any other blocking positions. This structure facilitates disassembly and assembly, and at the same time, ensures the stability of the rotational motion.

[0047] Secondly, the first elastic pressure arm 4 of the present embodiment is an inclined pressure arm. On the axial projection of the first dimensional axis 10, the two first elastic pressure arms 4 are distributed in an "×" shape or an "eight" shape. The first elastic pressure arm 4 and the circumferential surface of the first dimensional axis 10 are tangentially distributed. The inclined manner and the "×"-shaped or "eight"-shaped elastic compression manner can form a correction of the axis centerline position of the first dimensional axis 10 on different sides, so that the first dimensional axis 10 can rotate at a set position. As another alternative, the first elastic pressure arm 4 of the present embodiment is a parallel pressure arm parallel to the first dimensional axis 10, which can also achieve elastic compression.

[0048] In addition, if Figure 3As shown, a bearing 12 is installed in the first shaft groove 11, and the bearing 12 is a T-shaped structure. A stop expansion groove is provided on the inner side of the first shaft groove 11 in the groove length direction, and the flange of the bearing 12 stops at the stop expansion groove. The first dimension shaft 10 and the bearing 12 are rotatably connected, and cylindrical parts 20 protruding outward and sleeved on the first dimension shaft 10 are respectively provided on the opposite sides of the second frame 2, wherein the outer end face of one cylindrical part 20 is in contact with the inner end face of a bearing 12, and the outer end face of the other cylindrical part 20 is spaced from the inner end face of the other bearing 12, and the first elastic damping member 3 is sleeved on the other cylindrical part 20, and the first elastic pressure arm 4 is pressed on the circumference of the bearing 12.

[0049] The setting of the bearing 12 reduces the rotational friction and provides better rotational stability. The axial elastic force of the first elastic damping member 3 makes the flange of the bearing 12 always conform to the bottom of the stop expansion groove, so that the first dimension shaft 10 is installed more stably. The bearing 12 is locked circumferentially under the pressure of the first elastic pressure arm 4, and the state at this time can extend the service life of the first elastic pressure arm 4 and ensure the elastic pressure performance of the first elastic pressure arm 4.

[0050] Preferably, the first dimension shaft 10 of this embodiment is connected to the first worm gear drive motor set 15 , that is, the first worm gear drive motor set 15 drives the first dimension shaft 10 to rotate.

[0051] The shaft installation method of the drive device includes the following steps:

[0052] S1, placing the second frame 2 into the first frame 1, and the first dimension axis 10 arranged on the second frame 2 enters the corresponding first axis groove 11 on the first frame 1;

[0053] S2. Fix the first elastic pressure arm 4 on the first frame 1, and the first elastic pressure arm 4 elastically presses the circumference of the first dimensional axis 10 away from the bottom of the first axis groove 11. The first dimensional axis 10 rotates relative to the first axis groove 11 and the first elastic pressure arm 4, and the axis installation is completed.

[0054] Embodiment 2

[0055] Based on embodiment one, the driving device of this embodiment also includes a first elastic damping member 3 which is axially distributed along the first dimensional axis 10 and is located between the inner side of the first frame 1 and the outer side of the second frame 2. The axial elastic force provided by the first elastic damping member 3 is used to eliminate the axial movement of the second frame 2 along the first dimensional axis 10, and when the second frame 2 and the first frame 1 make relative rotational motion, the first elastic damping member 3 provides a damping elastic force in the rotational direction to the second frame 2 and the first frame 1.

[0056] The first elastic damping member 3 provides an axial elastic force to eliminate the axial movement, thereby making the rotation more stable.

[0057] The rotational damping force provided can prevent the free shaking or rotation of the frame, ensure the efficiency of the rotational drive, and improve the clarity of anti-shake or tracking shooting.

[0058] For example, when the second frame 2 rotates back and forth relative to the first frame 1 around the first dimensional axis 10 , the first elastic damping member 3 at this time can ensure the rotation stability of the second frame 2 .

[0059] Furthermore, if Figure 1-Figure 3 As shown, in the axial direction of the first dimension axis 10, one side of the first frame 1 contacts the corresponding side of the second frame 2, and the other side of the first frame 1 is spaced from the corresponding other side of the second frame 2. This method can improve the efficiency of assembly and disassembly. The first elastic damping member 3 is a torsion spring and the first elastic damping member 3 is arranged between the other side of the first frame 1 and the corresponding other side of the second frame 2. Figure 7 and Figure 8 As shown, a torsion spring arm one end overlapping portion 17 is provided on the other side of the first frame 1, and a torsion spring arm other end overlapping portion 18 is provided on the corresponding other side of the second frame 2, one end of the torsion spring arm overlaps the torsion spring arm one end overlapping portion 17, and the other end of the torsion spring arm overlaps the torsion spring arm other end overlapping portion 18, and the axial end of the spiral tube of the torsion spring acts on the other side inner wall of the first frame 1, and the axial other end of the spiral tube of the torsion spring acts on the corresponding other side inner wall of the second frame 2.

[0060] That is, the torsion spring provides an axial spring force and a rotational damping spring force.

[0061] The working principle of this embodiment is as follows:

[0062] The first worm gear drive motor group 15 drives the first dimension axis 10 to rotate, and the second frame 2 is driven to rotate synchronously. The rotation of the second frame 2 enables the loaded lens module to achieve anti-shake or tracking.

[0063] Of course, in order to prevent disconnection, such as Figure 6-Figure 8 , and attached Fig.12As shown, the present embodiment further discloses a first rotation limiting structure, which is used for limiting the second frame 2 when it rotates to the limit position relative to the first frame 1. Specifically, the first rotation limiting structure of the present embodiment includes two outer protrusions 21 arranged on one of the diagonal lines of the second frame 2, and the transverse cross section of each outer protrusion 21 is semicircular, so as to form an avoidance and guide for the outer protrusion 21 to enter the stroke increasing limiting groove 14, and the outer protrusion 21 extends outside any axial end face of the first frame 1 and a spacing is reserved between the outer protrusion 21 and the corresponding end face of the first frame 1. And a stroke increasing limiting groove 14 corresponding to the outer protrusion 21 is provided on one of the diagonal lines of the first frame 1, and when the second frame 2 rotates back and forth relative to the first frame 1, the outer protrusion 21 can enter and exit the corresponding stroke increasing limiting groove 14, and when the outer protrusion 21 abuts against the groove bottom or groove wall of the stroke increasing limiting groove 14, the second frame 2 stops rotating.

[0064] As another alternative, the first rotation limiting structure of this embodiment includes the above-mentioned outer protrusion 21 and the stroke increasing limiting groove 14, and the positions thereof can be interchanged.

[0065] The width of the stroke increasing limit groove 14 is greater than the outer diameter of the outer protrusion 21 to prevent the outer protrusion 21 from being unable to fit into the stroke increasing limit groove 14. The stroke increasing limit groove 14 is a U-shaped structure.

[0066] In a preferred embodiment, the outer protrusion 21 of this embodiment is arranged at the axial rear end of the second frame 2, and the stroke increasing limit groove 14 is arranged at the rear end of the first frame 1. The rear end here can be understood as the end away from the roof surface.

[0067] Embodiment 3

[0068] Based on the second embodiment, Figure 1 , Figure 2 , Figure 4 and Figure 12-13 As shown, the driving device further includes a third frame 5 rotatably connected to the second frame 2 and rotating around the second dimensional axis 13, and a second elastic damping member 6 axially distributed along the second dimensional axis 13 is provided between the inner side of the second frame 2 and the outer side of the third frame 5, and the function of the second elastic damping member 6 is the same as that of the first elastic damping member 3. The second dimensional axis 13 includes two coaxially distributed second sub-axes, and the second elastic damping member 6 is also a torsion spring, and the second elastic damping member 6 is sleeved on the periphery of any second sub-axes, and the installation method of the second elastic damping member 6 can refer to the first embodiment.

[0069] The rotation of the third frame 5 is configured with a second rotation limit structure, and the second rotation limit structure is used for limiting the third frame 5 when it rotates to the limit position relative to the second frame 2. Specifically, the second rotation limit structure includes at least one limit stopper 22 arranged on the second frame 2 and located outside any end face of the third frame 5 in the axial direction. The limit stopper 22 is suspended outside any end face of the third frame 5 in the axial direction. When the third frame 5 rotates back and forth around the second dimensional axis 13, the third frame 5 stops rotating when it contacts the limit stopper 22. When the third frame 5 rotates, one of the two corners of the third frame 5 close to the limit stopper 22 contacts the limit stopper 22 in both forward and reverse rotation to achieve the limit position. The limit stopper 22 of this embodiment is arched, for example, an arch of continuous arcs, and of course, it can also be an arch formed by continuous connection of multiple straight line segments.

[0070] Preferably, if Figure 8 As shown, the limit stopper 22 of this embodiment is arranged on one side or two opposite sides of the axial front end of the second frame 2. The axial front end of the second frame 2 can be understood as an end close to the ceiling.

[0071] The two limit blocks 22 are symmetrically distributed about the optical axis, and the arched direction of the limit blocks 22 is toward the ceiling side, so as to increase the rotation angle of the third frame 5 .

[0072] The two limit blocks 22 can form a state in which two corners symmetrically distributed about the optical axis contact the limit blocks 22 at the same time, so as to prevent the center of gravity of the third frame 5 from being displaced when in limit contact, thereby extending the service life and ensuring stability.

[0073] In the projection of the Z axis, the limit stopper 22 and the second dimension axis 13 of this embodiment are vertically or cross-shapedly distributed.

[0074] In addition, if Figure 4-Figure 6 As shown, the second dimension shaft 13 is driven to rotate by the second worm gear drive motor group 16. At the same time, the second dimension shaft 13 is stuck in the second shaft groove 23 of the second frame 2, and the second bearing 24 is installed in the second shaft groove 23. The second dimension shaft 13 and the second bearing 24 are rotatably connected, and the installation method of the second bearing 24 is consistent with the bearing installation method in the embodiment. A second elastic pressure arm 25 is provided on the second frame 2, which extends from the notch of the second shaft groove 23 and elastically presses on the circumference of the second bearing 24. The second elastic pressure arm 25 is consistent with the first elastic pressure arm of the first embodiment.

[0075] like Figure 7 and Figure 8As shown, an inner wall on the inner side of the second frame 2 is provided with one end of a torsion spring arm that rests on a shoulder 26, and an outer wall side of the third frame 5 is provided with the other end of a torsion spring arm that rests on a shoulder 50, one end of the torsion spring arm of the second elastic damping member 6 rests on the one end of the torsion spring arm that rests on the shoulder 26, and the other end of the torsion spring arm of the second elastic damping member 6 rests on the other end of the torsion spring arm that rests on the shoulder 50.

[0076] External convex cylinders 51 having the same function as the cylindrical portion 20 in the first embodiment are respectively disposed on the outer walls on opposite sides of the third frame 5 , and the second elastic damping member 6 is sleeved on an external convex cylinder 51 .

[0077] Embodiment 4

[0078] The structure and principle of this embodiment are basically the same as those of the first embodiment, except that the first elastic pressure arm 4 is located on either side of the length direction of the first shaft groove 11 and elastically presses on the circumference of the first dimension shaft 10 . That is, the first elastic pressure arm 4 is located beside the first shaft groove 11 .

[0079] Embodiment 5

[0080] like Figure 10-11 As shown, this embodiment provides a camera device, which includes the driving device of embodiment 1 or embodiment 2. The camera device also includes a focus motor 7 fixed in the driving device.

[0081] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An axis mounting mechanism of a driving device, comprising a first frame (1), in which a second frame (2) is rotatably connected and rotates around a first dimensional axis (10) perpendicular to an optical axis, characterized in that: First shaft grooves (11) for the first dimensional shaft (10) to be inserted into are respectively provided on opposite sides of the first frame (1), the first dimensional shaft (10) and the first shaft groove (11) are rotatably connected, and a first elastic pressure arm (4) is provided on the first frame (1) for elastically pressing the first dimensional shaft (10) on a side of the circumference away from the bottom of the first shaft groove (11).

2. The shaft mounting mechanism of the drive device according to claim 1, characterized in that: The first elastic pressure arm (4) extends from the notch of the first shaft groove (11) and elastically presses on the circumference of the first dimensional shaft (10).

3. The shaft mounting mechanism of the drive device according to claim 1, characterized in that: The first elastic pressure arm (4) is located on either side of the length direction of the first shaft groove (11) and elastically presses on the circumference of the first dimensional shaft (10).

4. The shaft mounting mechanism of the drive device according to claim 1, 2 or 3, characterized in that: The first elastic pressure arm (4) is tangent to the circumference of the first dimensional axis (10).

5. The shaft mounting mechanism of the drive device according to claim 4, characterized in that: The first elastic pressure arm (4) is any one of an inclined pressure arm and a parallel pressure arm parallel to the first dimensional axis (10), and the first elastic pressure arm (4) elastically presses on the circumference of the first dimensional axis (10).

6. The shaft mounting mechanism of the drive device according to claim 1, characterized in that: In the axial projection of the first dimensional axis (10), the two first elastic pressure arms (4) are distributed in an "X" shape or an "eight" shape.

7. The shaft mounting mechanism of the drive device according to claim 1, characterized in that: The first elastic pressure arm (4) is fixed on a fixing frame (40), and the fixing frame (40) is fixed on the first frame (1).

8. The shaft mounting mechanism of the drive device according to claim 1, characterized in that: A bearing (12) is installed in the first shaft groove (11), and the first dimensional shaft (10) and the bearing (12) are rotatably connected. A cylindrical portion (20) protruding outward and sleeved on the first dimensional shaft (10) is respectively provided on the opposite sides of the second frame (2), wherein the outer end surface of one of the cylindrical portions (20) is in contact with the inner end surface of one of the bearings (12), and the outer end surface of the other cylindrical portion (20) is spaced from the inner end surface of the other bearing (12), and the first elastic pressure arm (4) is pressed on the circumferential surface of the bearing (12).

9. A method for installing a shaft of a driving device, characterized in that: The shaft installation method of the drive device includes the shaft installation mechanism of the drive device according to any one of claims 1 to 8, and the shaft installation method of the drive device includes the following steps: S1. Place the second frame (2) into the first frame (1), and allow the first dimensional axis (10) arranged on the second frame (2) to enter the corresponding first axis groove (11) on the first frame (1); S2. Fix the first elastic pressure arm (4) on the first frame (1), and the first elastic pressure arm (4) elastically presses the circumference of the first dimensional axis (10) away from the bottom of the first axis groove (11), and the first dimensional axis (10) rotates relative to the first axis groove (11) and the first elastic pressure arm (4), thereby completing the axis installation.

10. A driving device, characterized in that: The driving device comprises the shaft mounting mechanism of the driving device according to any one of claims 1-8.

11. A camera device, characterized in that The image pickup apparatus includes the driving device according to claim 10.

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