A movement with ultra-high stability

Abstract

The present invention discloses a movement with ultra-high stability, comprising a movement base (1), characterized in that an optical drive is fixedly arranged in the movement base (1), a linkage lever mechanism and a pressure plate driving mechanism are also arranged in the movement base (1), the linkage lever mechanism comprises a first lever (4) and a second lever (5) which are symmetrically distributed, the first lever (4) and the second lever (5) are both rotatably connected to the movement base (1) via a rotating shaft with a torsion spring (6), a guide driving block (7) is connected at the working end of the first lever (4) and the second lever (5), and the guide driving block (7) is in a truncated cone shape, a connecting portion (8) is arranged on the first lever (4) and the second lever (5), and the two connecting portions (8) are hinged to each other via a connecting shaft (9), and a locking portion (10) is also arranged at one end of the first lever (4) away from the working end.

Description

Technical Field

[0001] The invention relates to the field of optical storage, and in particular to a movement with ultra-high stability. Background Art

[0002] With the development of optical storage technology, the capacity of a single optical disc used in optical disc libraries has reached 500GB. With the continuous increase in capacity, it is necessary to increase the speed of the spindle motor while keeping the read and write time of a single disc unchanged. For example, a 500GB disc requires the spindle motor to rotate at a speed of more than 7000RPM; the movement used in the optical disc library is a common BD disc movement structure, and the maximum capacity of a BD disc is 100GB. The normal working speed of the spindle motor is 3000-4000RPM. However, this speed still cannot meet the use requirements of the large-capacity optical disc library movement. In order to meet the use requirements of 500GB discs, the working speed needs to be increased by more than 2 times, or the read and write speed and transmission speed need to be sacrificed; at the same time, with the continuous development of ultra-high capacity optical discs in optical disc libraries, 1TB and above optical discs will soon be available, so the requirements for the optical disc speed can only be more stringent.

[0003] Traditional movement such as Figure 1 As shown, the spindle motor is mounted on the optical drive unit 1-1, the optical drive unit 1-1 and the movement base 1-2 are connected through the intermediate base 1-3, the tray 1-4 is also mounted on the movement base 1-2, and a pressure plate carrier 1-5 is also provided on the movement base 1-2, and the movement pressure plate 1-6 is installed on the pressure plate carrier 1-5.

[0004] The disc that needs to be read and written is placed on the tray 1-4 and transported to the top of the optical drive 1-1. However, before the disc is sent to the spindle motor of the optical drive unit 1-1, the optical drive unit 1-1 needs to move so that the highest end of the motor drops below the plane of the tray 1-4, otherwise the disc and the motor will interfere with each other. After the disc is sent to the top of the spindle motor, the pressure plate 1-6 moves downward to fix the disc on the spindle motor. This traditional movement structure, because the optical drive 1-1 and the movement base 1-2 are connected through various complex and movable mechanisms (intermediate base 1-3), when the motor is working, a large resonance will occur between the optical drive unit 1-1, the intermediate base 1-3 and the movement base 1-2, which will make noise and affect the overall service life of the movement; at the same time, the intermediate base 1-3 is an overall U-shaped structure, which is easy to deform during the molding process, and its accuracy is difficult to guarantee, and the cost is high.

[0005] Therefore, a method or device capable of solving the above problems is now needed. Summary of the invention

[0006] The present invention aims to solve the above-mentioned deficiencies in the prior art and proposes a movement that can avoid resonance between optical drive units and a movement base, thereby improving the reading and writing stability.

[0007] The technical solution of the present invention is: a movement with ultra-high stability, including a movement base 1, characterized in that: an optical drive is fixedly arranged in the movement base 1, and a support panel 11 is also connected to the movement base 1, and a linkage lever mechanism and a pressure plate driving mechanism are arranged on the support panel 11,

[0008] The linkage lever mechanism includes a symmetrically distributed first lever 4 and a second lever 5, the first lever 4 and the second lever 5 are rotatably connected to the movement base 1 through a rotating shaft with a torsion spring 6, the working ends of the first lever 4 and the second lever 5 are connected with a guide drive block 7, and the guide drive block 7 is truncated, the first lever 4 and the second lever 5 are both provided with a connecting portion 8, the two connecting portions 8 are hinged to each other through a connecting shaft 9, and a locking portion 10 is also provided at one end of the first lever 4 away from the working end.

[0009] The movement base 1 is connected to a support panel 11, and two arc-shaped long guide grooves 12 are symmetrically provided on the support panel 11. A first guide block 13 is provided on each of the first lever 4 and the second lever 5, and the two first guide blocks 13 are respectively slidably connected in the two arc-shaped long guide grooves 12. Two arc-shaped short guide grooves 14 are also symmetrically provided on the support panel 11, and a second guide block 15 is provided on each of the first lever 4 and the second lever 5, and the two second guide blocks 15 are respectively slidably connected in the two arc-shaped short guide grooves 14. A straight guide groove 16 is also provided on the support panel 11, and the end of the connecting shaft 9 is slidably connected in the straight guide groove 16.

[0010] The platen driving mechanism includes a driving motor 17 disposed on the movement base 1, the output end of the driving motor 17 is connected to a positioning linkage gear 18 through a first gear transmission pair, the positioning linkage gear 18 is meshed with a positioning linkage rack 19 slidably connected to the support panel 11, a positioning plate 20 is disposed on the positioning linkage rack 19, and the positioning plate 20 matches the locking portion 10.

[0011] At the same time, the output end of the driving motor 17 is also connected to the double rack 21 slidably connected to the movement base 1 through the second gear transmission pair, and the double rack 21 is respectively connected to the first space cam 22 and the second space cam 23 rotatably supported on the movement base 1 through the symmetrically arranged third gear transmission pair and the fourth gear transmission pair. The rack on one side of the double rack 21 is meshed with the output teeth in the second gear transmission pair, and the rack on the other side is meshed with the input teeth in the third gear transmission pair and the fourth gear transmission pair at the same time. Cam grooves 24 are provided on the first space cam 22 and the second space cam 23. The pressure plate driving mechanism also includes a pressure plate frame 25. The guide pins at both ends of the pressure plate frame 25 are respectively slidably connected to the cam grooves 24 on the first space cam 22 and the second space cam 23. The head and tail of the cam groove 24 are straight parts, and there is a spiral part between the two straight parts.

[0012] A first travel switch 26 connected to the movement base 1 is disposed at each end of the double rack 21 , and a second travel switch 27 matching the movement limit position of the second lever 5 is disposed on the support panel 11 .

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This type of movement with ultra-high stability has a simple structure, ingenious design and reasonable layout. It creatively subverts the traditional structure to solve the problem that the optical drive and the movement base (and the connection mechanism between them) are prone to resonance during the use of the traditional structure movement, thereby limiting the number of rotations of the optical drive. It is designed in a way that the optical drive is fixedly connected to the movement base, and a matching linkage lever mechanism and a pressure plate driving mechanism are designed for this fixed optical drive. The linkage lever mechanism can ensure the accuracy of the movement of the optical disc in the process of entering and exiting the movement, and the pressure plate driving mechanism can drive the optical disc downward, so that the optical disc is connected to the motor shaft in the optical drive to perform optical disc reading and writing operations. Since it fixes the optical drive to the movement base, it can maximize the stability of the optical drive when it is working, so it can achieve a higher reading and writing speed, providing a foundation and space for the development of the optical drive. At the same time, since the optical drive no longer needs to move inside the movement, the design space inside the movement is also released. This movement with ultra-high stability has a simple manufacturing process and low manufacturing cost, so it can be said that it has many advantages and is particularly suitable for promotion and application in this field, and its market prospect is very broad. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the traditional movement in two working states.

[0016] Figure 2It is a schematic diagram of the overall structure of an embodiment of the present invention (front view).

[0017] Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present invention (back side).

[0018] Figure 4 It is a structural schematic diagram of the pressure plate driving mechanism part in an embodiment of the present invention.

[0019] Figure 5 1 is a top view of the linkage lever mechanism portion of the embodiment of the present invention (without the supporting panel).

[0020] Figure 6 It is a top view of the linkage lever mechanism part (with a supporting panel) in an embodiment of the present invention.

[0021] Figure 7 It is a front view of the linkage lever mechanism part in the embodiment of the present invention.

[0022] Figure 8 It is a schematic diagram of the working states of the first spatial cam and the second spatial cam in an embodiment of the present invention, and an expanded diagram of the axes of the cam grooves opened on the two spatial cams.

[0023] Fig. 9 It is a schematic diagram of the movement process of the positioning plate locking the first lever in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The specific implementation of the present invention will be described below with reference to the accompanying drawings. Figures 1 to 9 As shown: A movement with ultra-high stability, including a movement base 1, characterized in that: an optical drive is fixedly arranged in the movement base 1, and a support panel 11 is also connected to the movement base 1, and a linkage lever mechanism and a pressure plate driving mechanism are arranged on the support panel 11,

[0025] The linkage lever mechanism includes a symmetrically distributed first lever 4 and a second lever 5, the first lever 4 and the second lever 5 are rotatably connected to the movement base 1 through a rotating shaft with a torsion spring 6, the working ends of the first lever 4 and the second lever 5 are connected with a guide drive block 7, and the guide drive block 7 is truncated, the first lever 4 and the second lever 5 are both provided with a connecting portion 8, the two connecting portions 8 are hinged to each other through a connecting shaft 9, and a locking portion 10 is also provided at one end of the first lever 4 away from the working end.

[0026] The movement base 1 is connected to a support panel 11, and two arc-shaped long guide grooves 12 are symmetrically provided on the support panel 11. A first guide block 13 is provided on each of the first lever 4 and the second lever 5, and the two first guide blocks 13 are respectively slidably connected in the two arc-shaped long guide grooves 12. Two arc-shaped short guide grooves 14 are also symmetrically provided on the support panel 11, and a second guide block 15 is provided on each of the first lever 4 and the second lever 5, and the two second guide blocks 15 are respectively slidably connected in the two arc-shaped short guide grooves 14. A straight guide groove 16 is also provided on the support panel 11, and the end of the connecting shaft 9 is slidably connected in the straight guide groove 16.

[0027] The platen driving mechanism includes a driving motor 17 disposed on the movement base 1, the output end of the driving motor 17 is connected to a positioning linkage gear 18 through a first gear transmission pair, the positioning linkage gear 18 is meshed with a positioning linkage rack 19 slidably connected to the support panel 11, a positioning plate 20 is disposed on the positioning linkage rack 19, and the positioning plate 20 matches the locking portion 10.

[0028] At the same time, the output end of the driving motor 17 is also connected to the double rack 21 slidably connected to the movement base 1 through the second gear transmission pair, and the double rack 21 is respectively connected to the first space cam 22 and the second space cam 23 rotatably supported on the movement base 1 through the symmetrically arranged third gear transmission pair and the fourth gear transmission pair. The rack on one side of the double rack 21 is meshed with the output teeth in the second gear transmission pair, and the rack on the other side is meshed with the input teeth in the third gear transmission pair and the fourth gear transmission pair at the same time. Cam grooves 24 are provided on the first space cam 22 and the second space cam 23. The pressure plate driving mechanism also includes a pressure plate frame 25. The guide pins at both ends of the pressure plate frame 25 are respectively slidably connected to the cam grooves 24 on the first space cam 22 and the second space cam 23. The head and tail of the cam groove 24 are straight parts, and there is a spiral part between the two straight parts.

[0029] A first travel switch 26 connected to the movement base 1 is disposed at each end of the double rack 21 , and a second travel switch 27 matching the movement limit position of the second lever 5 is disposed on the support panel 11 .

[0030] The working process of the movement with ultra-high stability of the embodiment of the present invention is as follows: when the optical drive is required to perform read / write operations on the optical disc, the staff or the optical disc picking mechanism sends the optical disc into the movement of this structural form. After the optical disc enters the interior of the movement through the entrance opened on the movement, it will contact the linkage lever mechanism, specifically, the guide drive block 7 at the end of the first lever 4 and the second lever 5. Since the first lever 4 and the second lever 5 are symmetrically arranged, and the center of the optical disc is located on the symmetry axis between the two, when the optical disc moves toward the interior of the movement, the reaction force applied by the two guide drive blocks 7 to the optical disc is equal, which can ensure the stability and accuracy of the optical disc during the movement; in the process of the optical disc entering the movement, the first lever 4 and the second lever 5 swing in opposite directions respectively, and the first guide block 13 thereon slides in the arc-shaped long guide groove 12, and the second guide block 15 thereon slides in the arc-shaped short guide groove 14, and the connecting shaft 9 slides in the straight guide groove 16. This structure can ensure the stability of the first lever 4 and the second lever 5 during the movement;

[0031] When the linkage lever mechanism is in motion, the pressure plate driving mechanism will also work, and the driving motor 17 will drive the positioning linkage gear 18 and the double rack 21 to move through the first gear transmission pair and the second gear transmission pair, wherein the positioning linkage gear 18 will drive the positioning linkage rack 19 to slide on the supporting panel 11, and when the optical disc is completely entered into the movement, the first lever 14 will swing to the extreme position, at which time the positioning plate 20 on the positioning linkage rack 19 will also drive the locking part 10 to move a short distance, so that the two guide drive blocks 7 are disengaged from the edge of the optical disc, and then the positioning plate 20 will jam the locking part 10, thereby locking the first lever 4; and since the first lever 4 and the second lever 5 are in a linkage relationship, when the first lever 4 is locked, the second lever 5 is also locked; when the second lever 5 is in a locked state, the second lever 5 triggers the second travel switch 27, and the control system of this movement determines that the linkage lever mechanism is out of contact with the optical disc, and the optical disc can be pressed down;

[0032] When the double rack 21 moves, it will simultaneously drive the input teeth in the third gear transmission pair and the fourth gear transmission pair to rotate, thereby driving the first space cam 22 and the second space cam 23 to rotate synchronously at the same time (the two rotate in opposite directions). When the two space cams rotate, the guide pin will slide in the cam groove 24, and finally realize the longitudinal movement of the pressure plate frame 25; the expansion line of the cam groove 24 is as shown in Figure 8 As shown, the first and last sections are straight sections. When the guide pin slides in the straight section, the height of the platen frame 25 does not change. At this time, it is waiting for the optical disc to enter the inner part of the movement. When the optical disc moves to below the platen set at the center of the platen frame 25, the movement rhythm of the optical disc and the platen frame 25 is consistent. The platen frame 25 drives the platen downward to press the optical disc down until the inner hole of the optical disc is sleeved on the rotating shaft of the optical drive, and then the reading and writing operations can be performed.

[0033] After the read and write operation is completed, the driving motor 17 rotates in the opposite direction, on the one hand, it drives the pressure plate frame 25 to drive the pressure plate upward, and on the other hand, it also drives the positioning linkage rack 19 to move in the opposite direction. When the positioning plate 20 leaves the locking portion 10, under the action of the torsion spring, the first lever 4 and the second lever 5 will swing in the opposite direction at the same time, so that the two guide drive blocks 7 at the ends of the first lever 4 and the second lever 5 will contact the edge of the optical disc and push the optical disc to move. Since the guide drive block 7 is truncated cone-shaped as a whole, the optical disc moves toward the outside of the movement and upward under the squeezing action of the two guide drive blocks 7. When the first lever 4 and the second lever 5 return to the initial state, the optical disc is spit out by the movement. At this time, the staff or the optical disc picking mechanism can remove the optical disc from the movement. At this point, a complete optical disc read and write operation is completed.

Claims

1. A movement with ultra-high stability, comprising a movement base (1), characterized in that: An optical drive is fixedly arranged in the movement base (1), and a support panel (11) is also connected to the movement base (1), and a linkage lever mechanism and a pressure plate driving mechanism are arranged on the support panel (11). The linkage lever mechanism comprises a symmetrically distributed first lever (4) and a second lever (5), the first lever (4) and the second lever (5) are both rotatably connected to the movement base (1) via a rotating shaft with a torsion spring (6), a guide drive block (7) is connected at the working end of the first lever (4) and the second lever (5), and the guide drive block (7) is in a truncated cone shape, a connecting portion (8) is provided on the first lever (4) and the second lever (5), and the two connecting portions (8) are hinged to each other via a connecting shaft (9), and a locking portion (10) is also provided at the end of the first lever (4) away from the working end. The movement base (1) is connected to a support panel (11), and two arc-shaped long guide grooves (12) are symmetrically provided on the support panel (11). A first guide block (13) is provided on the first lever (4) and the second lever (5), and the two first guide blocks (13) are respectively slidably connected in the two arc-shaped long guide grooves (12). Two arc-shaped short guide grooves (14) are also symmetrically provided on the support panel (11), and a second guide block (15) is provided on the first lever (4) and the second lever (5), and the two second guide blocks (15) are respectively slidably connected in the two arc-shaped short guide grooves (14). A straight guide groove (16) is also provided on the support panel (11), and the end of the connecting shaft (9) is slidably connected in the straight guide groove (16). The pressure plate driving mechanism comprises a driving motor (17) arranged on the movement base (1); an output end of the driving motor (17) is connected to a positioning linkage gear (18) via a first gear transmission pair; the positioning linkage gear (18) is meshed with a positioning linkage rack (19) slidably connected to the support panel (11); a positioning plate (20) is arranged on the positioning linkage rack (19); the positioning plate (20) is matched with the locking portion (10); At the same time, the output end of the driving motor (17) is also connected to a double rack (21) slidably connected to the movement base (1) through a second gear transmission pair, and the double rack (21) is respectively connected to a first space cam (22) and a second space cam (23) rotatably supported on the movement base (1) through a symmetrically arranged third gear transmission pair and a fourth gear transmission pair, one side rack of the double rack (21) meshes with the output teeth in the second gear transmission pair, and the other side rack meshes with the input teeth in the third gear transmission pair and the fourth gear transmission pair at the same time, the first space cam (22) and the second space cam (23) are provided with cam grooves (24), and the pressure plate driving mechanism also includes a pressure plate frame (25), the guide pins at both ends of the pressure plate frame (25) are respectively slidably connected to the cam grooves (24) on the first space cam (22) and the second space cam (23), the head and tail of the cam groove (24) are straight parts, and there is a spiral part between the two straight parts. A first travel switch (26) connected to the movement base (1) is provided at each end of the double rack (21), and a second travel switch (27) matching the movement limit position of the second lever (5) is provided on the support panel (11).

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