Flatness detection device of mobile phone support and detection method thereof

Abstract

The invention discloses a flatness detection device of a mobile phone support and a detection method thereof. The flatness detection device comprises a supporting frame, a first driving motor, a linkage mechanism, a bottom plate, a top plate and a detection mechanism. The bottom plate is arranged at the top end of the supporting frame, the top plate for placing the mobile phone support is arranged at the position, close to the rear end, above the bottom plate, the bottom plate is connected with the left end of the top plate through the linkage mechanism, the linkage mechanism can drive the bottom plate and the top plate to move alternately, and the detection mechanism is arranged at the position, close to the front end, of the top surface of the bottom plate. The detection mechanism comprises a first stand column, an arc plate, a detection probe, a movable mechanism, a second driving motor and other assemblies, when the bottom plate and the top plate move in a staggered mode, the mobile phone support can be detected through the detection probe, the detection point position can be enlarged, the height of the detection probe can be adjusted along the arc plate to adapt to mobile phone supports of different thickness sizes, the detection precision is improved, and the detection efficiency is improved. And the use requirements of people are met.

Description

Technical Field

[0001] The present invention relates to the technical field of mobile phone holder detection, and in particular to a device and method for detecting the flatness of a mobile phone holder. Background Art

[0002] A phone holder is a tool used to secure and support a phone or tablet. Its primary function is to free your hands and adjust the device's viewing angle for increased comfort. Its core value lies in resolving handheld device fatigue issues, such as wrist pain from prolonged holding, the device slipping and hitting your face while lying down, or cervical spine pressure caused by looking down at the screen.

[0003] Insufficient flatness of the mobile phone holder may cause the mobile phone to be placed unstable, especially when it is vibrated or touched, and may slip, thereby causing property loss to the user.

[0004] Some existing detection devices use fixed sensors or single-axis motion mechanisms for detection, but they are difficult to adapt to brackets of different sizes, curved surfaces or complex structures. The detection flexibility is insufficient, which may affect the reliability of the detection results. Summary of the Invention

[0005] The purpose of the present invention is to provide a flatness detection device and a detection method for a mobile phone holder to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a flatness detection device for a mobile phone holder, comprising a support frame, a group of drive motors 1 being provided on the left side of the support frame near the top, a linkage mechanism being connected to the top end of the drive shaft of the drive motor 1, a group of bottom plates being connected to the lower right end of the linkage mechanism, a group of top plates being connected to the upper right end, and a detection mechanism being connected to the top surface of the bottom plates near the front end; The linkage mechanism includes a linkage lower plate, a linkage middle shaft, a linkage upper plate, linkage arm 1 and linkage arm 2. The top end of the driving shaft of the driving motor 1 is connected to the linkage lower plate, the end of the top surface of the linkage lower plate away from the driving motor 1 is connected to a group of linkage middle shafts, the top end of the linkage middle shaft is connected to a group of linkage upper plates, the other end of the linkage upper plate is connected to a group of linkage arm 1, and the outer side of the linkage middle shaft is connected to the linkage arm 2.

[0007] By adopting the above technical solution, the drive motor 1 can cooperate with the linkage mechanism to automatically control the reciprocating motion of the bottom plate and the top plate without manual intervention, thereby improving the detection efficiency. The detection mechanism is located at the front end of the top plate and can perform high-precision scanning and measurement of the surface of the mobile phone holder placed on the top plate, and can quickly identify the flatness deviation of the holder. The drive motor 1 forms a core power transmission path through the linkage lower plate, the linkage middle axis and the linkage upper plate, thereby realizing the synchronous driving of the linkage upper plate and the middle axis, and drives the top plate and the bottom plate to perform coordinated movements through the linkage arm 1 and the linkage arm 2 to ensure stability during detection.

[0008] Preferably, a limiting frame is provided on the top surface of the top plate near the middle end, a pulley block is connected to the rear end of the top plate, and a group of guide plates are provided at the position of the pulley block corresponding to the rear top end of the support frame, and the guide plates pass between the pulley blocks.

[0009] By adopting the above technical solution, the limit frame is located at the middle end of the top plate, which is used to install and fix the mobile phone holder to prevent the holder from sliding or tilting during the detection process, and avoid detection errors caused by the displacement of the holder. The pulley group moves along the guide plate, with smooth movement and load balance, and cooperates with the drive of the linkage mechanism to offset the asymmetric force during the movement of the top plate and prevent the top plate from getting stuck or tilting, thereby achieving low-friction movement, improving energy efficiency and speed, and improving anti-interference stability, which can adapt to vibration environments and ensure the accuracy of detection.

[0010] Preferably, the detection mechanism includes a column one, an arc plate, a detection probe, a movable mechanism, a column two and a drive motor two. A group of column one is provided on the top surface of the bottom plate near the front left and right ends of the top plate. The rear top ends of the two groups of column one are connected by an arc plate, and a group of detection probes is provided at the top of the arc plate. The bottom end of the detection probe is connected to the arc plate through a sleeve one. A movable mechanism is provided at the front end of the sleeve one. The bottom middle end of the movable mechanism is connected to the top end of the column two, and the front end is connected to the drive motor two.

[0011] By adopting the above technical solution, two sets of columns are fixed at the left and right ends of the front base, and a rigid bridge frame is formed through the arc plate on the top to provide stable support and movement path for the detection probe. The second drive motor can drive the movable mechanism to drive the detection probe to move along the arc plate. The arc design of the arc plate can also expand the scanning range and detection height of the detection probe, realize multi-position and multi-height scanning, and adapt to mobile phone holders of different sizes and thicknesses. No manual operation is required, reducing human intervention.

[0012] Preferably, the movable mechanism includes movable arm one, movable arm two, movable arm three, a synchronous shaft, sleeve two and movable arm four. The rear end of the driving shaft of the driving motor two is connected to a group of movable arm one, the other end of the movable arm one is connected to a group of movable arm two, the other end of the movable arm two is connected to a group of movable arm three, the other end of the movable arm three is connected to a group of synchronous shaft, the rear end of the synchronous shaft passes through the front top of the column two and is connected to a group of sleeve two, a group of movable arm four is provided in the sleeve two, and the top of the movable arm four is connected to the front end of the sleeve one.

[0013] By adopting the above technical solution, a multi-joint robotic arm structure is formed from drive motor two, movable arm one, movable arm two, movable arm three, synchronous shaft, movable arm four, sleeve one to detection probe, which can perform high-degree-of-freedom movement and flexibly adjust the position of the detection probe in three-dimensional space. The synchronous shaft passes through column two and is connected to sleeve two, which can ensure the synchronization and rigidity of power transmission, avoid motion lag, and realize vertical lifting or tilt angle adjustment of the detection probe, adapting to all-round detection of curved brackets or complex structures.

[0014] Preferably, the second drive motor is arranged in front of the second column near the right end.

[0015] Preferably, the movable arm swings back and forth up and down around the synchronous axis at the front end of the second column.

[0016] Preferably, the bottom plate is connected to the top of the support frame in an embedded manner.

[0017] Preferably, the left ends of the two linkage arms are configured as sleeves, which are sleeved on the outside of the linkage central axis.

[0018] By adopting the above technical solution, the linkage arm 2 forms a rotating pair with the linkage central axis through the sleeve structure, allowing the linkage arm 2 to move synchronously when the central axis rotates, which can reduce sliding friction, reduce energy loss, and improve response speed.

[0019] Preferably, a set of rollers are connected to the left and right positions of the front and rear ends of the bottom plate.

[0020] By adopting the above technical solution, the movement stability of the base plate on the top of the support frame can be improved.

[0021] The present application provides a method for detecting the flatness of a mobile phone holder, comprising the following steps: S1: Place the mobile phone holder in the limit frame; S2: Driving motor 2 drives the detection probe to move along the arc plate through the movable mechanism, so that the detection probe corresponds to the top surface of the mobile phone holder; S3: Driving motor 1 drives the bottom plate and top plate to move alternately through the linkage mechanism; S4: The detection probe detects the top surface of the mobile phone holder during the movement; S5: After the detection is completed, the driving motor 1 is stopped and the mobile phone holder is removed from the limit frame.

[0022] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes a linkage mechanism disposed at the top of a first drive motor. The linkage mechanism includes a linkage lower plate, a linkage middle shaft, a linkage upper plate, linkage arms 1 and 2, and the right ends of the first and second linkage arms are connected to the left ends of the top and bottom plates, respectively. Driven by the first drive motor, the top and bottom plates and the components thereon are driven to perform left and right reciprocating motion, thereby performing dynamic detection. This improves the detection effect of the mobile phone holder and allows for rapid identification of flatness deviations of the holder. 2. The present invention adopts a detection mechanism disposed at the front end of the top surface of the bottom plate. The detection mechanism includes components such as a first column, an arc plate, a detection probe, a movable mechanism, a second column, and a second drive motor. The two sets of first columns are connected by the arc plate, and the bottom end of the detection probe is connected to the arc plate by a first sleeve. When the detection probe moves along the arc plate, the detection height can be adjusted, quickly adapting to different detection requirements, expanding the detection scanning range of the detection probe, and improving the scope of application. 3. The present invention is provided with a movable mechanism at the front end of sleeve 1. The movable mechanism includes movable arm 1, movable arm 2, movable arm 3, synchronization shaft, sleeve 2 and movable arm 4 and other components. Under the cooperation of each other, a multi-joint mechanical arm structure can be formed, which is conducive to high-degree-of-freedom movement, can drive the detection probe to move flexibly, and adapt to all-round detection of curved brackets or complex structures. The motion load is shared between the components, and the load adaptability is good, which can reduce errors and ensure detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the linkage mechanism structure of the present invention; Figure 3 Schematic diagram of the top plate structure of the present invention; Figure 4 It is a structural schematic diagram of the detection mechanism of the present invention; Figure 5 It is a schematic diagram of the structure of the movable mechanism of the present invention; Figure 6 It is a rear view structural diagram of the detection mechanism of the present invention.

[0024] In the figure: support frame 1, drive motor 1-2, linkage mechanism 3, bottom plate 4, top plate 5, detection mechanism 6, linkage lower plate 31, linkage middle axis 32, linkage upper plate 33, linkage arm 1-34, linkage arm 2-35, limit frame 51, pulley block 52, guide plate 53, column 1-61, arc plate 62, detection probe 63, movable mechanism 64, column 2-65, drive motor 2-66, sleeve 1-631, movable arm 1-641, movable arm 2-642, movable arm 3-643, synchronous shaft 644, sleeve 2-645, movable arm 4-646. DETAILED DESCRIPTION

[0025] In order to further explain the technical solution of the present invention, specific embodiments are described in detail below.

[0026] See also Figure 1 The present invention provides a flatness detection device for a mobile phone holder, comprising a support frame 1, a group of drive motors 2 being installed on the left side of the support frame 1 near the top, a linkage mechanism 3 being connected to the top of the drive shaft of the drive motor 2, a group of bottom plates 4 being connected to the lower right end of the linkage mechanism 3, a group of top plates 5 being connected to the upper right end, and a detection mechanism 6 being connected to the top surface of the bottom plate 4 near the front end, wherein the bottom plate 4 is embedded in the top end of the support frame 1, and a group of rollers are installed at the left and right positions of the front and rear ends of the bottom plate 4, which can improve the movement stability of the bottom plate 4 on the top end of the support frame 1.

[0027] Specifically, the driving motor 2 can cooperate with the linkage mechanism 3 to automatically control the reciprocating motion of the bottom plate 4 and the top plate 5 without manual intervention, thereby improving the detection efficiency. The detection mechanism 6 is located at the front end of the top plate 5 and can perform high-precision scanning and measurement on the surface of the mobile phone holder placed on the top plate 5, and can quickly identify the flatness deviation of the holder.

[0028] See also Figure 1-Figure 2 The linkage mechanism 3 includes a linkage lower plate 31, a linkage middle shaft 32, a linkage upper plate 33, a linkage arm 1 34 and a linkage arm 2 35. The top end of the driving shaft of the driving motor 1 2 is fixedly connected to the linkage lower plate 31, and the end of the top surface of the linkage lower plate 31 away from the driving motor 1 2 is fixedly connected to a group of linkage middle shafts 32, and the top of the linkage middle shaft 32 is fixedly connected to a group of linkage upper plates 33. The other end of the linkage upper plate 33 is hinged to a group of linkage arms 1 34, and the other end of the linkage arm 1 34 is hinged to the left end of the top plate 5. The left end of the linkage arm 2 35 is set to a sleeve shape, which is sleeved on the outside of the linkage middle shaft 32, and the right end is hinged to the left end of the top surface of the bottom plate 4. The linkage arm 2 35 forms a rotating pair with the linkage middle shaft 32 through the sleeve structure, allowing the linkage arm 2 35 to move synchronously when the middle shaft 32 rotates, which can reduce sliding friction, reduce energy loss, and improve response speed.

[0029] Specifically, the driving motor 1 2 forms a core power transmission path by linking the lower plate 31, the middle axis 32 and the upper plate 33, thereby realizing the synchronous driving of the upper plate 33 and the middle axis 32, and drives the top plate 5 and the bottom plate 4 to perform coordinated movements through the linkage arm 1 34 and the linkage arm 2 35 to ensure stability during detection.

[0030] See also Figure 3 A limit frame 51 for placing a mobile phone holder is fixedly connected to the top surface of the top plate 5 near the middle end, and a pulley group 52 is fixedly connected to the rear end of the top plate 5, and a group of guide plates 53 are fixedly connected to the position of the pulley group 52 at the rear top of the support frame 1. The guide plates 53 pass between the pulley groups 52. When the top plate 5 moves, the pulley group 52 can move along the guide plates 53.

[0031] Specifically, the limit frame 51 is located at the middle end of the top plate 5 and is used to install and fix the mobile phone holder to prevent the holder from sliding or tilting during the detection process, and avoid detection errors caused by the displacement of the holder. The pulley group 52 moves along the guide plate 53, and the movement is smooth and the load is balanced. In conjunction with the drive of the linkage mechanism 3, the asymmetric force during the movement of the top plate 5 is offset to prevent the top plate 5 from getting stuck or tilting, thereby achieving low-friction movement, improving energy efficiency and speed, and improving anti-interference stability, which can adapt to the vibration environment and ensure the accuracy of detection.

[0032] See also Figure 4-Figure 6 The detection mechanism 6 includes a column 1 61, an arc plate 62, a detection probe 63, a movable mechanism 64, a column 2 65 and a drive motor 2 66. A group of columns 1 61 are fixedly connected to the top surface of the bottom plate 4 near the front left and right ends of the top plate 5. The rear top ends of the two groups of columns 1 61 are connected through the arc plate 62, and a group of detection probes 63 are provided at the top of the arc plate 62. The bottom end of the detection probe 63 is fixedly connected to a group of sleeves 1 631, and is connected to the arc plate 62 through the sleeves 1 631. The front end of the sleeves 1 631 is connected to the movable mechanism 64. The bottom middle end of the movable mechanism 64 is connected to the top of the column 2 65, and the front end is connected to the drive motor 2 66.

[0033] Specifically, two groups of columns 61 are fixed to the left and right ends of the front base plate 4, and a rigid bridge frame is formed through the arc plate 62 on the top to provide stable support and movement path for the detection probe 63. The driving motor 2 66 can drive the movable mechanism 64 to drive the detection probe 63 to move along the arc plate 62. The arc design of the arc plate 62 can also expand the scanning range and detection height of the detection probe 63, realize multi-position and multi-height scanning, and adapt to mobile phone holders of different sizes and thicknesses without manual operation, reducing human intervention.

[0034] See also Figure 4-Figure 6The movable mechanism 64 includes a movable arm 1 641, a movable arm 2 642, a movable arm 3 643, a synchronous shaft 644, a sleeve 2 645 and a movable arm 4 646. The rear end of the drive shaft of the driving motor 2 66 is fixedly connected to a group of movable arms 1 641. The other end of the movable arm 1 641 is hinged to a group of movable arms 2 642. The other end of the movable arm 2 642 is hinged to a group of movable arms 3 643. The other end of the movable arm 3 643 is fixedly connected to a group of synchronous shafts 644. The rear end of the synchronous shafts 644 passes through the column. A group of sleeves 2 645 is fixedly connected to the front top of the second 65, and a group of movable arms 4 646 is slidably connected inside the sleeves 2 645. The top of the movable arm 4 646 is hinged to the front end of the sleeve 1 631. Among them, the driving motor 2 66 is arranged in front of the column 2 65 near the right end, which can drive the movable arm 3 643 to swing back and forth around the synchronous shaft 644 at the front end of the column 2 65, so that the sleeve 2 645 swings, and then drives the movable arm 4 646 to push the sleeve 1 631 to move along the arc plate 62.

[0035] Specifically, from the driving motor 2 66, the movable arm 1 641, the movable arm 2 642, the movable arm 3 643, the synchronization shaft 644, the movable arm 4 646, the sleeve 1 631 to the detection probe 63, a multi-joint robotic arm structure is formed, which can perform high-degree-of-freedom movement and can flexibly adjust the position of the detection probe 63 in three-dimensional space. The synchronization shaft 644 passes through the column 2 65 and is connected to the sleeve 2 645, which can ensure the synchronization and rigidity of power transmission, avoid motion lag, and realize the vertical lifting or tilt angle adjustment of the detection probe 63, which is suitable for all-round detection of curved brackets or complex structures.

[0036] A method for detecting the flatness of a mobile phone holder comprises the following steps: S1: Place the mobile phone holder in the limiting frame 51; S2: The second motor 66 drives the shaft to rotate, driving the movable arm 1 641 to rotate, and the movable arm 2 642 drives the movable arm 3 643 and the sleeve 2 645 to swing, and the movable arm 4 646 pushes the sleeve 1 631 and the detection probe 63 to move along the arc plate 62, adjusting the height position of the detection probe 63 so that the detection probe 63 corresponds to the top surface of the mobile phone holder; S3: The driving shaft of the driving motor 1 2 rotates to drive the linkage lower plate 31, the linkage middle shaft 32 and the linkage upper plate 33 to rotate. The linkage middle shaft 32 drives the bottom plate 4 to move through the linkage arm 2 35, and the linkage upper plate 33 drives the top plate 5 to move through the linkage arm 1 34, thereby realizing the staggered movement of the bottom plate 4 and the top plate 5; S4: The detection probe 63 detects the top surface of the mobile phone holder during the movement; S5: After the detection is completed, the driving motor 2 is stopped and the mobile phone holder is taken out from the limiting frame 51.

[0037] The present invention provides a flatness detection device and a detection method for a mobile phone holder. The present invention provides a linkage mechanism 3 arranged at the top of a driving motor 2, the linkage mechanism 3 includes a linkage lower plate 31, a linkage middle shaft 32, a linkage upper plate 33, a linkage arm 1 34 and a linkage arm 2 35 and other components, and the right ends of the linkage arm 1 34 and the linkage arm 2 35 are respectively connected to the left ends of the top plate 5 and the bottom plate 4. The top plate 5 and the bottom plate 4 and the components thereon can be driven by the driving motor 1 2 to perform left and right reciprocating motion for dynamic detection, thereby improving the detection effect of the mobile phone holder and quickly identifying the flatness deviation of the holder; the detection mechanism 6 is arranged at the front end of the top surface of the bottom plate 4, the detection mechanism 6 includes a column 1 61, an arc plate 62, a detection probe 63, a movable mechanism 64, a column 2 65 and a driving motor 2 66 and other components, and the two groups of columns 1 61 are connected. The connection is made through the arc plate 62, and the bottom end of the detection probe 63 is connected to the arc plate 62 through the sleeve 1 631. When the detection probe 63 moves along the arc plate 62, the detection height can be adjusted, and different detection requirements can be quickly adapted, the detection scanning range of the detection probe 63 can be expanded, and the scope of application can be improved; through the movable mechanism 64 set at the front end of the sleeve 1 631, the movable mechanism 64 includes movable arm 1 641, movable arm 2 642, movable arm 3 643, synchronization shaft 644, sleeve 2 645 and movable arm 4 646 and other components, which cooperate with each other to form a multi-joint mechanical arm structure, which is conducive to high-degree-of-freedom movement, can drive the detection probe 63 to move flexibly, and adapt to all-round detection of curved brackets or complex structures. In addition, the motion load is shared between the components, and the load adaptability is good, which can reduce errors and ensure detection accuracy.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A flatness detection device for a mobile phone holder, characterized in that: The invention comprises a support frame (1), wherein a group of driving motors (2) are provided at a position near the top of the left side of the support frame (1), a linkage mechanism (3) is connected to the top of the driving shaft of the driving motor (2), a group of bottom plates (4) are connected to the right lower end of the linkage mechanism (3), a group of top plates (5) are connected to the right upper end, and a detection mechanism (6) is connected to the top surface of the bottom plate (4) near the front end; The linkage mechanism (3) comprises a linkage lower plate (31), a linkage middle shaft (32), a linkage upper plate (33), a linkage arm 1 (34) and a linkage arm 2 (35), wherein the top end of the driving shaft of the driving motor 1 (2) is connected to the linkage lower plate (31), an end of the top surface of the linkage lower plate (31) away from the driving motor 1 (2) is connected to a group of linkage middle shafts (32), the top end of the linkage middle shaft (32) is connected to a group of linkage upper plates (33), the other end of the linkage upper plate (33) is connected to a group of linkage arms 1 (34), and the outer side of the linkage middle shaft (32) is connected to the linkage arm 2 (35).

2. The flatness detection device for a mobile phone holder according to claim 1, characterized in that: A limiting frame (51) is provided at a position near the middle end of the top surface of the top plate (5), a pulley block (52) is connected to the rear end of the top plate (5), and a group of guide plates (53) are provided at a position corresponding to the pulley block (52) at the rear top end of the support frame (1), and the guide plates (53) pass between the pulley blocks (52).

3. The flatness detection device for a mobile phone holder according to claim 2, characterized in that: The detection mechanism (6) includes a column (61), an arc plate (62), a detection probe (63), a movable mechanism (64), a column (65) and a drive motor (66). A group of columns (61) are provided at the top surface of the bottom plate (4) near the front left and right ends of the top plate (5). The rear top ends of the two groups of columns (61) are connected through the arc plate (62), and a group of detection probes (63) are provided at the top end of the arc plate (62). The bottom end of the detection probe (63) is connected to the arc plate (62) through the sleeve (631). The front end of the sleeve (631) is provided with a movable mechanism (64). The bottom middle end of the movable mechanism (64) is connected to the top end of the column (65), and the front end is connected to the drive motor (66).

4. The flatness detection device for a mobile phone holder according to claim 3, characterized in that: The movable mechanism (64) includes movable arm 1 (641), movable arm 2 (642), movable arm 3 (643), a synchronous shaft (644), sleeve 2 (645) and movable arm 4 (646). The rear end of the drive shaft of the drive motor 2 (66) is connected to a group of movable arm 1 (641), the other end of the movable arm 1 (641) is connected to a group of movable arm 2 (642), the other end of the movable arm 2 (642) is connected to a group of movable arm 3 (643), the other end of the movable arm 3 (643) is connected to a group of synchronous shaft (644), the rear end of the synchronous shaft (644) passes through the front top of the column 2 (65) and is connected to a group of sleeve 2 (645), a group of movable arm 4 (646) is arranged in the sleeve 2 (645), and the top of the movable arm 4 (646) is connected to the front end of the sleeve 1 (631).

5. The flatness detection device for a mobile phone holder according to claim 4, characterized in that: The second driving motor (66) is arranged in front of the second column (65) near the right end.

6. The flatness detection device for a mobile phone holder according to claim 4, characterized in that: The movable arm 3 (643) swings back and forth up and down around the synchronous shaft (644) at the front end of the column 2 (65).

7. The flatness detection device for a mobile phone holder according to claim 3, characterized in that: The bottom plate (4) is connected to the top of the support frame (1) in an embedded manner.

8. The flatness detection device for a mobile phone holder according to claim 1, characterized in that: The left end of the second linkage arm (35) is configured as a sleeve, which is sleeved on the outside of the linkage central axis (32).

9. The flatness detection device for a mobile phone holder according to claim 7, characterized in that: A set of rollers are connected to the left and right positions of the front and rear ends of the bottom plate (4).

10. A method for detecting the flatness of a mobile phone holder, according to the flatness detection device of any one of claims 1 to 9, characterized in that: The steps include: S1: placing the mobile phone holder in the limiting frame (51); S2: The second driving motor (66) drives the detection probe (63) to move along the arc plate (62) through the movable mechanism (64), so that the detection probe (63) corresponds to the top surface of the mobile phone holder; S3: driving motor 1 (2) drives the bottom plate (4) and the top plate (5) to move in an alternating manner through the linkage mechanism (3); S4: The detection probe (63) detects the top surface of the mobile phone holder during the movement; S5: After the detection is completed, the driving motor 1 (2) is stopped and the mobile phone holder is taken out from the limiting frame (51).

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