JP2006182186A - Driving mechanism for storage type monitor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a driving mechanism for a storage type monitor realizing miniaturization of a motor by reducing driving force of the motor to a half and realizing a thin shape of a case by simplifying a deceleration mechanism. <P>SOLUTION: Two pairs of planetary gear mechanisms 10A, 10B are provided on a movable frame 7 in parallel and internal gears 18A, 18B are connected so as to be rotated in a reverse direction. The movable frame 7 is supported to be able to advance and retreat by engaging them with two rack gears 21A, 21B provided on an inner side of the case in parallel through slider gears 20A, 20B engaged with them. Further, a tilt gear 23 is provided such that planetary carriers 15A, 15B are rotated in the same direction and is engaged with a shaft rotation gear 25 for rotating a monitor turning shaft 8. Rotation direction of both motors 9A, 9B is separately controlled and simultaneously driven. Thereby, slide of forward/rearward advancement of the movable frame 7 and vertical tilting action of the monitor 4 are selectively performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a drive mechanism for a retractable monitor.

Some car navigation systems installed in automobiles are stored in a console when not in use. For example, as shown in FIG. 8, the audio equipment 2 such as a CD or a radio is stored in the lower stage of the console mounting case 1 and the car navigation 3 is stored in the upper stage. The monitor 4 is automatically pulled out from the case 5 as shown in FIG. Thereafter, as shown in FIG. 10, the monitor 4 is rotated upward so that the front face faces the driver's seat.

As described above, when the car navigation 3 is not used, the monitor 4 is stored horizontally in the case 5, and when used, the drive mechanism of the retractable monitor that pivots upward after being slid forward is pulled out. Two dedicated motors, a slide motor and a tilt motor, are attached. As described above, the conventional mechanism is equipped with two dedicated motors having the driving force necessary for each operation of the sliding motor and the tilting motor. Furthermore, there is a problem that the structure is complicated because a complicated speed reduction mechanism is required for each.

On the other hand, since the size of the console mounting case 1 is defined by the in-vehicle standard size (DIN standard), the size of the car navigation 3 and the audio device 2 housed therein is limited. In addition to the increasing demand for mounting MDs and the like, there is a problem of increasing the size of the device main body, and in order to solve this, there has been a demand for a smaller and thinner car navigation 3.

The present invention improves the above problems, halves the required motor driving force, reduces the size of the motor, simplifies the speed reduction mechanism, and achieves a thinner case drive. A mechanism is provided.

The drive mechanism of the retractable monitor according to claim 1 of the present invention is such that the monitor for displaying an image is slid forward and backward in the case by the power of the motor, and the monitor is tilted up and down while protruding from the case. A planetary carrier having a sun gear connected to the motor, a plurality of planetary gears meshed with the motor, and a planetary carrier that supports the planetary gear and has a gear formed on the outer periphery. And two planetary gear mechanisms comprising an internal gear that forms an inner peripheral gear that meshes with the planetary gear and an outer peripheral gear, are arranged side by side on a movable frame that supports the monitor, The outer peripheral gears of the first and second planetary gear mechanisms are connected directly or connected via a gear so as to rotate in opposite directions. In addition, the movable frame is supported by the two racks provided parallel to the inside of the case via the slider gears meshed with both outer peripheral gears so that the movable frame can be moved forward and backward. Further, the first and second planetary gear mechanisms A tilt gear that meshes with both gears formed on the outer periphery is provided so that the planetary carrier rotates in the same direction, and this tilt gear meshes with a shaft rotation gear that rotates the monitor rotation shaft. It is characterized in that the rotation direction of the movable frame supporting the monitor and the upward / downward tilt operation of the monitor are selectively performed by separately controlling the rotation directions and driving them simultaneously. .

According to a second aspect of the present invention, the retractable monitor drive mechanism is configured such that the monitor for displaying an image is slid forward and backward in the case by the power of the motor, and the monitor is tilted up and down while protruding from the case. A planetary carrier having a sun gear connected to the motor, a plurality of planetary gears meshed with the motor, and a planetary carrier that supports the planetary gear and has a gear formed on the outer periphery. And two planetary gear mechanisms comprising an internal gear that forms an inner peripheral gear that meshes with the planetary gear and an outer peripheral gear, are arranged side by side on a movable frame that supports the monitor, A tilt gear that meshes with the outer peripheral gears so that the internal gears of the first and second planetary gear mechanisms rotate in the same direction. The tilt gear is meshed with a shaft rotation gear for rotating the monitor rotation shaft, and the planetary carriers of the first and second planetary gear mechanisms are provided so as to rotate in directions opposite to each other. The movable frame is supported by the two racks provided parallel to the inside of the case via slider gears that mesh with both gears, and the movable frame is supported so that it can move forward and backward. By being driven, the movable frame that supports the monitor slides forward and backward, and the monitor tilts up and down selectively.

The drive mechanism of the retractable monitor according to claim 3 of the present invention is characterized in that the slider gear is formed of one or a plurality of spur gears or spiral gears and meshes with the rack. .

According to the drive mechanism of the retractable monitor according to the first and second aspects of the present invention, two motors having a small driving force are simultaneously driven, and the rotation direction thereof is separately controlled, whereby the monitor advances ( Advancement), ascending / descending tilting operation, and reverse (accommodating). As a result, the required driving force can be halved to reduce the size of the motor, and the planetary gear mechanism itself has a speed reducing action, so that the speed reduction mechanism is simplified and the thickness of the case can be reduced.

Further, according to the drive mechanism of the retractable monitor according to the third aspect, since the slider gear is formed by one or a plurality of spur gears or spiral gears and meshed with the rack, it corresponds to the size of the case and the reduction ratio. Can be designed.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 shows a drive mechanism 6 of a retractable monitor. A movable frame 7 is provided inside the case 5 so as to be able to move forward and backward, and a monitor 4 for displaying an image at the tip of the movable frame 7 has a monitor rotating shaft 8. Are connected so as to be pivotable up and down. Motors 9A and 9B are arranged on a straight line on the upper surface of the movable frame 7 so as to face each other. The motors 9A and 9B are connected to planetary gear mechanisms 10A and 10B via spiral gears 11A and 11B, respectively.

A structure obtained by disassembling this mechanism is shown in FIG. Cylindrical spiral gears 11A and 11B are attached to the tips of the motors 9A and 9B. The two sets of planetary gear mechanisms 10A and 10B include small-diameter sun gears 13A and 13B each having a disk-shaped large-diameter spiral gear 12A and 12B meshing with the spiral gears 11A and 11B. Three planetary gears 14A and 14B, planetary carriers 15A and 15B that support the planetary gears 14A and 14B and have spiral gears formed on the outer periphery, and the three planetary gears 14A, 14B is formed with internal gears 16A and 16B that mesh with each other on the outside, and internal gears 18A and 18B that form outer peripheral gears 17A and 17B.

The motors 9A and 9B can independently control the rotation direction and are driven simultaneously. Further, the internal gears 18A and 18B of the first and second planetary gear mechanisms 10A and 10B are meshed with the outer peripheral gears 17A and 17B so as to rotate in opposite directions, and further, the outer peripheral gears 17A and 17B are respectively engaged with slider gears. 20A and 20B are meshed. Further, on both sides of the slider gears 20A and 20B, meshing with two rack gears 21A and 21B provided parallel to the inside of the side surface of the case 5, the movable frame 7 can be moved forward and backward by the rotation of the slider gears 20A and 20B. I support it.

Further, between the planetary carriers 15A and 15B formed by the spiral gears of the first and second planetary gear mechanisms 10A and 10B, the tilt gear 23 formed by the spiral gear meshes, and the planetary carriers 15A and 15B are mutually connected. It is designed to rotate in the same direction.

A shaft rotation gear 25 formed of a spiral gear is integrally attached to the monitor rotation shaft 8, and a tilt gear 23 is engaged with the shaft rotation gear 25. Further, both ends of the monitor rotation shaft 8 are rotatably supported by bearings 27 and 27, and the monitor rotation shaft 8 is connected by bosses 26 and 26 attached to the monitor 4. The monitor 4 connected to the shaft rotating gear 25 is rotated up and down (tilted).

The operation of the drive mechanism 6 of the retractable monitor having the above configuration will be described. First, when the movable frame 7 attached with the monitor 4 moves forward toward the opening of the case 5, as shown in FIG. 2, the motor 9A is rotated forward (clockwise direction when the motor output shaft is viewed from the front). Then, the motor 9B is also controlled so as to be rotated in the forward direction and driven simultaneously. The rotation of the motor 9A causes the sun gear 13A of the planetary gear mechanism 10A to rotate forward (clockwise as viewed from the plane) via the spiral gear 11A and the spiral gear 12A. Further, the rotation of the motor 9B causes the sun gear 13B of the planetary gear mechanism 10B to reversely rotate in the direction of the arrow via the spiral gear 11B and the spiral gear 12B.

When the sun gear 13A rotates forward, the three planetary gears 14A provided so as to surround the sun gear 13A rotate in reverse. Similarly, when the sun gear 13B is reversely rotated, the three planetary gears 14B provided so as to surround the sun gear 13B are normally rotated. The planetary carrier 15A that pivotally supports the three planetary gears 14A and the planetary carrier 15B that pivotally supports the three planetary gears 14B try to rotate in opposite directions. Since they are meshed, they are locked without rotating and the planetary carriers 15A and 15B and the tilt gear 23 remain stopped.

That is, when the planetary carriers 15A and 15B and the tilt gear 23 are locked, the planetary gears 14A and 14B rotate, and the internal gears 18A and 18B meshing with the inner peripheral gears 16A and 16B rotate in opposite directions to each other. It will be. As a result, the slider gears 20A and 20B meshing on both sides of the internal gears 18A and 18B rotate in opposite directions, and the movable frame 7 slides forward along the rack gears 21A and 21B meshing therewith. When the monitor 4 attached to the movable frame 7 protrudes from the opening of the case 5, it stops here.

Next, as shown in FIG. 3, when the motor 9A is reversely rotated and the motor 9B is controlled to rotate forward and simultaneously driven, the sun gear 13A of the planetary gear mechanism 10A is reversely rotated in the direction of the arrow by the rotation of the motor 9A. Further, since the motor 9B is rotating forward, the sun gear 13B of the planetary gear mechanism 10B is reversed in the arrow direction.

When the sun gear 13A reverses, three planetary gears 14A provided so as to surround the sun gear 13A rotate in the forward direction, and the internal gear 18A meshing with the inner peripheral gear 16A on the outside tries to rotate in the forward direction. Similarly, when the sun gear 13B rotates in the reverse direction, the three planetary gears 14B provided so as to surround the sun gear 13B rotate in the normal direction, and the internal gear 18A meshing with the inner peripheral gear 16A on the outside tries to rotate in the normal direction. In other words, the internal gears 18A and 18B that are directly meshed with each other are in a locked state without being rotated because a force is exerted to rotate in the same direction.

As a result, the planetary carriers 15A and 15B are reversed, and the planetary gears 14A and 14B attached thereto are revolved. Since the planetary carriers 15A and 15B that are reversed in the same direction are directly meshed with the tilt gear 23, the tilt gear 23 is rotated forward. When the tilt gear 23 rotates forward, the shaft rotation gear 25 formed by a spiral gear attached to the monitor rotation shaft 8 rotates, and the monitor 4 integrally connected to the monitor rotation shaft 8 rotates upward (tilt). To do.

Next, the case of lowering the monitor 4 will be described. As shown in FIG. 4, the motor 9A is controlled to rotate forward and the motor 9B is driven to rotate backward, and simultaneously driven.
Due to the rotation of the motor 9A, the sun gear 13A of the planetary gear mechanism 10A rotates forward in the direction of the arrow, and the motor 9B reverses, so the sun gear 13B of the planetary gear mechanism 10B also rotates in the forward direction of the arrow.

When the sun gears 13A and 13B rotate in the forward direction, the planetary gears 14A and 14B provided so as to surround the sun gears 13A and 14B try to rotate in reverse, and the internal gears 18A and 18B meshing with the inner peripheral gears 16A and 16B outside this The internal gears 18A and 18B that are directly meshed with each other are in a locked state without rotating.

As a result, the planetary carriers 15A and 15B rotate normally, and the planetary gears 14A and 14B attached thereto revolve. Since the planetary carriers 15A and 15B that are normally rotated in the same direction are directly meshed with the tilt gear 23, the tilt gear 23 is reversed. When the tilt gear 23 reverses, the shaft rotation gear 25 attached to the monitor rotation shaft 8 rotates, and the monitor 4 integrally connected to the monitor rotation shaft 8 rotates (tilts) downward.

Next, a case where the monitor 4 is stored will be described. As shown in FIG. 5, the motors 9A and 9B are controlled to reversely rotate and are driven simultaneously. By the reverse rotation of the motor 9A, the sun gear 13A of the planetary gear mechanism 10A is reversed in the direction of the arrow. Further, due to the reverse rotation of the motor 9B, the sun gear 13B of the planetary gear mechanism 10B rotates normally in the direction of the arrow.

When the sun gear 13A rotates, three planetary gears 14A provided so as to surround the sun gear 13A rotate forward. Similarly, when the sun gear 13B rotates, the planetary gears 14B provided so as to surround the sun gear 13B are reversed. The planetary carrier 15A that pivotally supports the three planetary gears 14A and the planetary carrier 15B that pivotally supports the three planetary gears 14B are going to rotate in opposite directions, but via the tilt gear 23 Since it is meshed, it is locked without rotating and the tilt gear 23 remains stopped.

In a state where the tilt gear 23 is locked, the planetary gears 14A and 14B rotate, and the internal gears 18A and 18B meshing with the inner peripheral gears 16A and 16B on the outside rotate in opposite directions. As a result, the slider gears 20A, 20B meshing on both sides of the internal gears 18A, 18B rotate in opposite directions, and the movable frame 7 moves backward along the rack gears 21A, 21B meshing with the slider gears 20A, 20B. 4 is accommodated in the case 5. Therefore, Table 1 shows the above operation in relation to the rotation direction of the motors 9A and 9B.

Accordingly, by simultaneously driving the two motors 9A and 9B having a small driving force and separately controlling the rotation directions, the monitor 4 moves forward (advances), ascends and descends, and moves backward (accommodates). Can be performed. Conventionally, two dedicated motors with the driving force required for each operation, a sliding motor and a tilting motor, have been installed, so the motors have increased in size and each has a complicated reduction mechanism. The thickness of the case was about 13 mm. On the other hand, since the drive mechanism 6 of the retractable monitor of the present invention drives the two motors 9A and 9B at the same time, the required drive force can be halved to reduce the size of the motor, and the planetary gear mechanism 10A, Since 10B itself has a speed reducing action, the speed reducing mechanism was simplified, and the thickness of the case could be reduced to 10 mm or less.

FIG. 6 shows another embodiment of the present invention, and the two sets of planetary gear mechanisms 10A and 10B have the same configuration as that shown in FIG. The internal gears 18A and 18B are provided at intervals, and mesh with the outer peripheral gears 17A and 17B formed of spiral gears via the tilt gear 23, and this is the shaft rotation attached to the monitor rotation shaft 8 as in FIG. It meshes with the gear 25. The planetary carriers 15A and 15B mesh with the slider gears 20A and 20B, respectively, and mesh with the two rack gears 21A and 21B provided parallel to the inside of the side surface of the case 5. The movable frame 7 is supported so as to move forward and backward by the rotation of 20B.

When the drive mechanism 6 of the retractable monitor configured as described above reverses the motor 9A and also reverses the motor 9B, the internal gears 18A and 18B try to rotate in the opposite direction but mesh with each other via the tilt gear 23. It will be locked without rotating.

In a state where the internal gears 18A and 18B are locked, the planetary gears 14A and 14B revolve, and the planetary carriers 15A and 15B rotate in directions opposite to each other. Further, the slider gears 20A and 20B meshing with the planetary carriers 15A and 15B also rotate in opposite directions. As a result, the movable frame 7 slides forward along the rack gears 21A and 21B meshing with the slider gears 20A and 20B, and stops when the monitor 4 attached to the movable frame 7 protrudes from the opening of the case 5. . Further, when the monitor 4 is moved backward, when the motor 9A is rotated forward and the motor 9B is rotated forward, the rotation directions of the slider gears 20A and 20B are reversed, and the vehicle moves backward along the rack gears 21A and 21B. It is stored in.

When the monitor 4 is tilted up and down, as shown in FIG. 7, when the motor 9A is rotated forward and the motor 9B is rotated reversely, the planetary carriers 15A and 15B try to rotate forward in the same direction and mesh with this. The slider gears 20A and 20B to rotate rotate in the same direction, the slider gear 20A rotates in the backward direction, and the slider gear 20B rotates in the forward direction. Therefore, the movable frame 7 is locked and does not move.

On the other hand, in a state where the planetary carriers 15A and 15B are locked, the planetary gears 14A and 14B rotate, the outer internal gears 18A and 18B rotate together, and the tilt gear 23 meshed with the outer peripheral gears 17A and 17B. Rotates forward, the shaft rotation gear 25 attached to the monitor rotation shaft 8 rotates, and the monitor 4 integrally connected to the monitor rotation shaft 8 rises. On the contrary, when the motor 9A is reversely rotated and the motor 9B is forwardly rotated, the internal gears 18A and 18B are forwardly rotated, and the tilt gear 23 meshing with the reverse is reversed, and the monitor 4 can be lowered.

In the above description, the case where the slider gears 20A and 20B are formed by one spur gear is shown, but a structure in which a plurality of spur gears are combined and meshed with the rack gears 21A and 21B may be used. The slider gears 20A and 20B may be formed by combining a spiral gear and a spur gear. In addition, the structure in which the internal gears 18A and 18B shown in FIG. 2 are directly connected and rotated in the reverse direction has been described, but a structure in which a plurality of gears are connected may be used. The tilt gear and the shaft rotation gear of the monitor rotation shaft that meshes with the tilt gear are not limited to the combination of the spiral gear, and may have a structure in which other mechanisms are combined.

Further, the drive mechanism of the retractable monitor of the present invention is not limited to being mounted on a vehicle but can be applied to a stationary type.

It is a top view which shows the drive mechanism of the storage type monitor by the Example of this invention. It is a disassembled perspective view which shows the advance operation | movement of the monitor of the drive mechanism shown in FIG. It is a disassembled perspective view which shows the raising operation | movement of the monitor of a drive mechanism. It is a disassembled perspective view which shows the downward operation | movement of the monitor of a drive mechanism. It is a disassembled perspective view which shows the backward movement operation | movement of the monitor of a drive mechanism. It is a disassembled perspective view which shows advance operation | movement of the monitor by other embodiment of this invention. It is a disassembled perspective view which shows the raising operation | movement of the monitor shown in FIG. It is a perspective view which shows the audio equipment and car navigation which were attached to the console attachment case. It is a perspective view which shows the state which the monitor of a car navigation is moving forward. It is a perspective view which shows the state which the monitor of a car navigation system has raised.

Explanation of symbols

1 Console mounting case
2 Audio equipment
3 Car navigation
4 Monitor
5 cases
6 Driven monitor drive mechanism
7 Movable frame
8 Monitor rotation axis
9A, 9B motor
10A, 10B Planetary gear mechanism
11A, 11B Spiral gear
12A, 12B Spiral gear
13A, 13B Sungear
14A, 14B Planetary gear
15A, 15B planetary carrier
16A, 16B Inner gear
17A, 17B Outer gear
18A, 18B Internal gear
20A, 20B Slider gear
21A, 21B Rack gear
23 Tilt gear
25 shaft rotating gear
26 Boss
27 Bearing

Claims (3)

A drive mechanism for a retractable monitor in which a monitor for displaying an image is slid forward and backward in the case by the power of the motor, and the monitor is tilted up and down while protruding from the case. A sun gear, a plurality of planetary gears that mesh with the sun gear, a planetary carrier that pivotally supports the planetary gear and forms a gear on the outer periphery, and an inner peripheral gear that meshes with the planetary gear. Two sets of planetary gear mechanisms composed of an internal gear that forms an outer peripheral gear are juxtaposed on the movable frame that supports the monitor, and the internal gears of the first and second planetary gear mechanisms are arranged in opposite directions. The two outer peripheral gears are connected directly or via a gear so as to rotate, and the slider gears meshed with the two outer peripheral gears. The movable frame is supported so as to be able to move forward and backward by engaging with two racks provided in parallel to the inside of the case via the, and the planetary carriers of the first and second planetary gear mechanisms are rotated in the same direction. A tilt gear that meshes with both gears formed on the outer periphery is provided, and this tilt gear is meshed with a shaft rotation gear that rotates the monitor rotation shaft, and the rotation directions of the two motors are separately controlled and driven simultaneously. Accordingly, the retractable monitor drive mechanism is configured to selectively perform forward / backward sliding of the movable frame that supports the monitor and vertical tilting of the monitor. A drive mechanism for a retractable monitor in which a monitor for displaying an image is slid forward and backward in the case by the power of the motor, and the monitor is tilted up and down while protruding from the case. A sun gear, a plurality of planetary gears that mesh with the sun gear, a planetary carrier that pivotally supports the planetary gear and forms a gear on the outer periphery, and an inner peripheral gear that meshes with the planetary gear. Two sets of planetary gear mechanisms composed of an internal gear forming an outer peripheral gear are juxtaposed on a movable frame that supports the monitor, and the internal gears of the first and second planetary gear mechanisms are arranged in the same direction. A tilt gear meshing with both outer peripheral gears is provided so as to rotate, and the tilt gear rotates the monitor rotation shaft. The planetary carriers of the first and second planetary gear mechanisms are arranged so as to rotate in opposite directions, and meshed with the rotating gear, and inside the case via slider gears respectively meshed with both gears formed on the outer periphery. The movable frame is engaged with two racks provided in parallel to support the movable frame so that it can move forward and backward, and the rotational directions of the two motors are separately controlled and driven simultaneously so that the movable frame that supports the monitor moves forward and backward. A drive mechanism for a retractable monitor, wherein the slide and the tilt operation of the monitor are selectively performed. 3. A drive mechanism for a retractable monitor according to claim 1, wherein the slider gear is formed of one or a plurality of spur gears or spiral gears and meshes with the rack.